2021-10-10 11:26:48 -04:00
|
|
|
Following are change highlights associated with official releases. Important
|
|
|
|
|
bug fixes are all mentioned, but some internal enhancements are omitted here for
|
|
|
|
|
brevity. Much more detail can be found in the git revision history:
|
|
|
|
|
|
|
|
|
|
https://github.com/jemalloc/jemalloc
|
|
|
|
|
|
Squashed 'deps/jemalloc/' changes from ea6b3e973..54eaed1d8
54eaed1d8 Merge branch 'dev'
304c91982 Update ChangeLog for 5.3.0.
8cb814629 Make the default option of zero realloc match the system allocator.
66c889500 Make test/unit/background_thread_enable more conservative.
a7d73dd4c Update TUNING.md to include the new tcache_max option.
254b01191 Small doc tweak of opt.trust_madvise.
f5e840bbf Minor typo fix in doc.
ceca07d2c Correct the name of stats.mutexes.prof_thds_data in doc.
391bad4b9 Avoid abort() in test/integration/cpp/infallible_new_true.
9a242f16d fix some typos
0e29ad4ef Rename zero_realloc option "strict" to "alloc".
5841b6dbe Update FreeBSD image to 12.3 for cirrus ci.
ed5fc14b2 Use volatile to workaround buffer overflow false positives.
25517b852 Reoreder TravisCI jobs to optimize CI time
8a49b62e7 Enable TravisCI for Windows
fdb6c1016 Add FreeBSD to TravisCI
a93931537 Do not disable SEC by default for 64k pages platforms
eaaa368ba Add comments and use meaningful vars in sz_psz2ind.
5bf03f8ce Implement PAGE_FLOOR macro
52631c90f Fix size class calculation for sec
7ae0f15c5 Add a default page size when cross-compile for Apple M1.
eb65d1b07 Fix FreeBSD system jemalloc TSD cleanup
78b58379c Fix possible "nmalloc >= ndalloc" assertion.
ca709c313 Fix failed assertion due to racy memory access
063d134ae Properly detect background thread support on Darwin.
a4e81221c Document 'make uninstall'
20f9802e4 Avoid overflow warnings in test/unit/safety_check.
8c59c44ff Add a dependency checking step at the end of malloc_conf_init.
efc539c04 Initialize prof_leak during prof init.
002f0e939 Disable TravisCI jobs generation for Windows
01a293fc0 Add Windows to TravisCI
b798fabdf Add prof_leak_error option
eafd2ac39 Forbid spaces in prefix and exec_prefix
36a09ba2c Forbid spaces in install suffix
640c3c72e Add support for 'make uninstall'
f15d8f3b4 Echo installed files via verbose 'install' command
eb196815d Avoid calculating size of size class twice & delete sc_data_global.
011449f17 Fix doc build with install-suffix.
8b49eb132 Fix the HELP_STRING of --enable-doc.
ddb170b1d Simplify arena_migrate() to take arena_t* instead of indices.
648b3b9f7 Lower the num_threads in the stress test of test/unit/prof_recent
d66162e03 Fix the extent state checking on the merge error path.
c9946fa7e FreeBSD also needs the OS-X "don't declare system functions as nothrow" fix since it also has jemalloc in the base system
89fe8ee6b Use the isb instruction instead of yield for spin locks on arm
6230cc88b Add background thread sleep retry in test/unit/hpa_background_thread
61978bbe6 Purge all if the last thread migrated away from an arena.
c91e62dd3 #include <features.h> as requested
18510020e Fix symbol conflict with musl libc
f509703af Fix two conversion warnings in tcache.
067c2da07 Fix unnecessary returns in san_(un)guard_pages_two_sided.
d660683d3 Fix test config of lg_san_uaf_align.
eabe88916 Rename full_position to low_bound in cache_bin.h.
dfdd7562f Rename san_enabled() to san_guard_enabled().
01d61a3c6 Fix a conversion warning.
8b34a788b Fix an used-uninitialized warning (false positive).
e491cef9a Add stats for stashed bytes in tcache.
b75822bc6 Implement use-after-free detection using junk and stash.
06aac61c4 Split the core logic of tcache flush into a separate function.
d038160f3 Fix shadowed variable usage.
bd70d8fc0 Add the profiling settings for tests explicit.
e491df1d2 Fix warnings when using autoheader.
60b9637cc Only invoke malloc_cpu_count_is_deterministic() when necessary.
837b37c4c Fix the time-since computation in HPA.
310af725b Add nstime_ns_since which obtains the duration since the input time.
cafe9a315 Disable percpu arena in case of non deterministic CPU count
bb5052ce9 Fix base_ehooks_get_for_metadata
9015e129b Update visual studio projects
d90655390 San: Create a function for committing and zeroing
800ce49c1 San: Bump alloc frequently reused guarded allocations
f56f5b993 Pass 'frequent_reuse' hint to PAI
2c70e8d35 Rename 'arena_decay' to 'arena_util'
0f6da1257 San: Implement bump alloc
34b00f896 San: Avoid running san tests with prof enabled
62f9c54d2 San: Rename 'guard' to 'san'
d9bbf539f CI: Refactor gen_travis.py
7dcf77809 Mark slab as true on sized dealloc fast path.
af6ee27c0 Enforce abort_conf:true when malloc_conf is not fully recognized.
113e8e68e freebsd 14 build fix proposal.
3b3257a70 Correct opt.prof_leak documentation
cdabe908d Track the initialized state of nstime_t on debug build.
400c59895 Fix uninitialized nstime reading / updating on the stack in hpa.
8b81d3f21 Fix the initialization of last_event in thread event init.
6bdb4f5ab Check prof_active in addtion to opt_prof during batch_alloc().
37342a4d3 Add ctl interface for experimental_infallible_new.
6cb585b13 San: Unguard guarded slabs during arena destruction
b6a7a535b Optimize away a branch on the free fastpath.
4d56aaeca Optimize away the tsd_fast() check on free fastpath.
26f5257b8 Remove declaration of an undefined function
215961541 Add new architecture loongarch.
8daac7958 Redefine functions with test hooks only for tests
c9ebff0fd Initialize deferred_work_generated
912324a1a Add debug check outside of the loop in hpa_alloc_batch.
cf9724531 Darwin malloc_size override support proposal.
ab0f1604b Delay the atexit call to prof_log_start().
11b6db744 CPU affinity on BSD platforms support.
83f329402 Small refactors around 7bb05e0.
3c4b717ff Remove unused header base_structs.h.
deb8e62a8 Implement guard pages.
7bb05e04b add experimental.arenas_create_ext mallctl
a9031a097 Allow setting a dump hook
f7d46b811 Allow setting custom backtrace hook
523cfa55c Guard prof related mallctl with opt_prof.
6e848a005 Remove opt_background_thread_hpa_interval_max_ms
8229cc77c Wake up background threads on demand
97da57c13 HPA: Add min_purge_interval_ms option
b8b8027f1 Allow PAI to calculate time until deferred work
26140dd24 Reject --enable-prof-libunwind without --enable-prof
e5062e9fb Makefile.in: make sure doc generated before install
8b24cb8fd Don't assume initialized arena in the default alloc hook.
c01a885e9 HPA: Correctly calculate retained pages
2c625d5cd Fix warnings when compiled with clang
9d02bdc88 Port gen_run_tests.py to python3
5884a076f Rename prof.dump_prefix to prof.prefix
6a0160071 Add Cirrus CI testing matrix
f58064b93 Verify that HPA is used before calling its functions
27f71242b Mutex: Tweak internal spin count.
6f41ba55e Mutex: Make spin count configurable.
dae24589b PH: Insert-below-min fast-path.
40d53e007 ph: Add aux-list counting and pre-merging.
dcb7b83fa Eset: Cache summary information for heap edatas.
252e0942d Eset: Pull per-pszind data into structs.
dc0a4b8b2 Edata: Pull out comparison fields into a summary.
0170dd198 Edata: Fix a couple typos.
08a4cc096 Pairing heap: inline functions instead of macros.
92a1e38f5 edata_cache: Allow unbounded fast caching.
d93eef2f4 HPA: Introduce a redesigned hpa_central_t.
e09eac1d4 Remove hpa_central.
c88fe355e Add unit tests for decay
aaea4fd1e Add more documentation to decay.c
4b633b9a8 Clean up background thread sleep computation
6630c5989 HPA: Hugification hysteresis.
113938b6f HPA: Pull out a hooks type.
1d4a7666d HPA: Do deferred operations on background threads.
583284f2d Add HPA deferral functionality.
ace329d11 HPA batch dalloc: Just do one deferred work check.
47d8a7e6b psset: Purge empty slabs first.
41fd56605 HPA: Purge across retained extents.
347523517 PAI: Fix a typo.
9c42ed2d1 Travis: Don't test "clang" on OS X.
d202218e8 HPA: Fix typos with big performance implications.
de033f56c mpsc_queue: Add module.
4452a4812 Add opt.experimental_infallible_new.
0689448b1 Travis: Unbreak the builds.
4fb93a18e extent_can_acquire_neighbor typo fix
2381efab5 ARC: add Minimum allocation alignment
2c0f4c2ac Fix typo in configure.ac: experimetal -> experimental
36c6bfb96 SEC: Allow arbitrarily many shards, cached sizes.
11beab38b Added --debug-syms-by-id option
08089589f Fix an interaction between the oversize_threshold test and bgthds.
541793821 Red-black tree: add summarize/filter.
b2c08ef2e RB unit tests: don't test reentrantly.
aea91b8c3 Clean up some minor data structure inconsistencies
1f688490e Stats: Fix a printing bug when hpa_dirty_mult = -1
4f7cb3a41 Sized deallocation: fix a typo.
12cd13cd4 Fix thread.name/prof_sys_thread_name interaction
304cdbb13 Fix a prof_recent/prof_sys_thread_name interaction
9b523c6c1 Refactor the locking in extent_recycle().
ce68f326b Avoid the release & re-acquire of the ecache locks around the merge hook.
7dc77527b Delete the mutex_pool module.
03d95cba8 Remove the unnecessary arena_ind_set in base_alloc_edata().
3093d9455 Move the edata mergeability related functions to extent.h.
7c964b035 Add rtree_write_range(): writing the same content to multiple leaf elements.
add636596 Stop checking head state in the merge hook.
49b7d7f0a Passing down the original edata on the expand path.
178493968 Use rtree tracked states to protect edata outside of ecache locks.
9ea235f8f Add witness_assert_positive_depth_to_rank().
4d8c22f9a Store edata->state in rtree leaf and make edata_t 128B aligned.
70d1541c5 Track extent is_head state in rtree leaf.
862219e46 Add quiescence sync before deleting base during arena_destroy.
a137a6825 Remove redundant declaration, pac_retain_grow_limit_get_set was declared twice in pac.h
2ae1ef7db Fix doc large size 54 KiB error
61afb6a40 Fix locking on arena_i_destroy_ctl().
9193ea224 Cirrus: fix build.
391307714 Mark head state during dss alloc.
11127240c Remove redundant enable-debug definition in configure.
22be724af Set is_head in extent_alloc_wrapper w/ retain.
73ca4b8ef HPA: Use dirtiest-first purging.
0f6c420f8 HPA: Make purging/hugifying more principled.
6bddb92ad psset: Rename "bitmap" to "pageslab_bitmap".
154aa5fcc Use the flat bitmap for eset and psset bitmaps.
271a676dc hpdata: early bailout for longest free range.
d21d5b46b Edata: Move sn into its own field.
fb327368d SEC: Expand option configurability.
ce9386370 HPA: Implement batch allocation.
cdae6706a SEC: Use batch fills.
480f3b11c Add a batch allocation interface to the PAI.
bf448d7a5 SEC: Reduce lock hold times.
1944ebbe7 HPA: Implement batch deallocation.
f47b4c2cd PAI/SEC: Add a dalloc_batch function.
4b8870c7d SEC: Fix a comment typo.
cde7097ec Update INSTALL.md to mention 'autoconf'
a11be5033 Implement opt.cache_oblivious.
8c5e5f50a Fix stats for "tcache_max" (was "lg_tcache_max")
041145c27 Report the correct and wrong sizes on sized dealloc bug detection.
f3b2668b3 Report the offending pointer on sized dealloc bug detection.
edbfe6912 Inline malloc fastpath into operator new.
79f81a373 HPA: Make dirty_mult configurable.
32dd15379 HPA: Make dehugification threshold configurable.
4790db15e HPA: make the hugification threshold configurable.
b3df80bc7 Pull HPA options into a containing struct.
bdb7307ff fxp: Add FXP_INIT_PERCENT
caef4c286 FXP: add fxp_mul_frac.
56e85c0e4 HPA: Use a whole-shard purging heuristic.
dc886e560 hpdata: Return the number of pages to be purged.
9fd9c876b psset: keep aggregate stats.
da63f23e6 HPA: Track pending purges/hugifies in the psset.
0ea3d6307 CTL, Stats: report HPA empty slab stats.
bf64557ed Move empty slab tracking to the psset.
99fc0717e psset: Reconceptualize insertion/removal.
061cabb71 HPA stats: report retained instead of inactive.
d3e5ea03c HPA: Track dirty stats.
68a1666e9 hpdata: Rename "dirty" to "touched".
be0d7a53f HPA: Don't track inactive pages.
55e0f60ca psset stats: Simplify handling.
94cd9444c HPA: Some minor reformattings.
b25ee5d88 HPA: Add purge stats.
746ea3de6 HPA stats: Allow some derived stats.
30b9e8162 HPA: Generalize purging.
70692cfb1 hpdata: Add state changing helpers.
9b75808be flat bitmap: Add a bitwise and/or/not.
2ae966222 hpdata: track per-page dirty state.
ff4086aa6 hpdata: count active pages instead of free ones.
3624dd42f hpdata: Add a comment for hpdata_consistent.
20140629b Bin: Move stats closer to the mutex.
c259323ab Use ticker_geom_t for arena tcache decay.
8edfc5b17 Add ticker_geom_t.
396732981 Arena: share bin offsets in a global.
2fcbd1811 Cache bin: Don't reverse flush order.
4c46e1136 Cache an arena's index in the arena.
229994a20 Tcache flush: keep common path state in registers.
31a629c3d Tcache flush: prefetch edata contents.
9f9247a62 Tcache fluhing: increase cache miss parallelism.
181ba7fd4 Tcache flush: Add an emap "batch lookup" path.
c007c537f Tcache flush: Unify edata lookup path.
35a855260 Mac OS: Tag mapped pages.
f6699803e Fix duration in prof log
a943172b7 Add runtime detection for MADV_DONTNEED zeroes pages (mostly for qemu)
2e3104ba0 Update config.{sub,guess} to support support-aarch64-apple-darwin as a target
a011c4c22 cache_bin: Separate out local and remote accesses.
14d689c0f Add prof stats mutex stats
9f71b5779 Output prof stats in stats print
1f1a0231e Split macros for initializing stats headers
4352cbc21 Add alignment tests for prof stats
54f3351f1 Add mallctl for prof stats fetching
40fa4d29d Track per size class internal fragmentation
afa489c3c Record request size in prof info
f9bb8dede Un-force-inline do_rallocx.
a9fa2defd Add JEMALLOC_COLD, and mark some functions cold.
5d8e70ab2 prof_recent: cassert(config_prof) more often.
83cad746a prof_log: cassert(config_prof) in public functions
526180b76 Extent.c: Avoid an rtree NULL-check.
b35ac00d5 Do not bump to large size for page aligned request
8a56d6b63 Add last-N mutex stats
22d62d8cb Handle ending gap properly for HPA stats
6c5a3a24d Omit bin stats rows with no data
ea013d8fa Enforce realloc sizing stability
74bd63b20 Optimize stats print using partial name-to-mib
4557c0a67 Enable ctl on partial mib and partial name
006dd0414 Add partial name-to-mib functionality
f2e1a5be7 Do not fail on partial ctl path for ctl_nametomib()
6ab181d2b Extract node lookup given mib input
3a627b967 No need to record all nodes in ctl_lookup()
91e006c4c Enable ctl_lookup() to start from arbitrary node
063a767ff Define JEMALLOC_HAS_ALLOCA_H for QNX
4e3fe218e Use posix_madvise to purge pages when available
26c1dc5a3 Support AutoConf for posix_madvise and POSIX_MADV_DONTNEED
96a59c3bb Fix recursive malloc during bootstrap on QNX
986cbe488 Disable JEMALLOC_TLS for QNX
1e3b8636f HPA: Remove unused malloc_conf options.
e82771807 Cache mallctl mib for batch allocation stress test
0dfdd31e0 Add tiny batch size to batch allocation stress test
9522ae41d Move n_search outside of assert as reported by static analyzer
a559caf74 hpdata: Strengthen assertions.
f51948d9e psset unit test: fix a bug.
54c94c167 flat bitmap: add scount / ucount functions.
e6c057ad3 fb: implement assign in terms of a visitor.
734e72ce8 bit_util: Guarantee popcount's presence.
d9f7e6c66 hpdata: Add a test.
3ed0b4e8a HPA: Add an nevictions counter.
fffcefed3 malloc_conf: Clarify HPA options.
f7cf23aa4 psset: Relegate alloc/dalloc to test code.
f9299ca57 HPA: Use psset fit/insert/remove.
0971e1e4e hpdata: Use addr/size instead of begin/npages.
5228d869e psset: Use fit/insert/remove as basis functions.
089f8fa44 Move hpdata bitmap logic out of the psset.
ca30b5db2 Introduce hpdata_t.
4a15008cf HPA unit test: skip if unsupported.
43af63fff HPA: Manage whole hugepages at a time.
63677dde6 Pages: Statically detect if pages_huge may succeed
c1b2a7793 psset: Move in stats.
d0a991d47 psset: Add insert/remove functions.
d438296b1 narenas_ratio: Accept fractional values.
ecd39418a Add fxp: A fixed-point math library.
99c2d6c23 Backport jeprof --collapse for flamegraph generation
520b75fa2 utrace support with label based signature.
92e189be8 Add some comments to the batch allocation logic flow
d96e4525a Route batch allocation of small batch size to tcache
ac480136d Split out locality checking in batch allocation tests
be5e49f4f Add a batch mode for cache_bin_alloc()
4a65f3493 Fix a cache bin test
566c4a859 Slight changes to cache bin internal functions
9545c2cd3 Add sample interval to prof last-N dump
cf2549a14 Add a per-arena oversize_threshold.
4ca3d91e9 Rename geom_grow -> exp_grow.
b4c37a6e8 Rename edata_tree_t -> edata_avail_t.
95f0a77fd Detect pthread_getname_np explicitly.
b3c5690b7 Update config.{guess,sub} to 2020-11-07@77632d9
589638182 Use the edata_cache_small_t in the HPA.
03a604711 Edata cache small: rewrite.
c9757d9e3 HPA: Don't disable shards that were never started.
1b3ee7566 Add experimental.thread.activity_callback.
27ef02ca9 Android build fix proposal.
d2d941017 MADV_DO[NOT]DUMP support equivalence on FreeBSD.
180b84315 Appveyor: fix 404 errors.
ef6d51ed4 DragonFlyBSD build support.
bf72188f8 Allow opt.tcache_max to accept small size classes.
ea32060f9 SEC: Implement thread affinity.
d16849c91 psset: Do first-fit based on slab age.
634ec6f50 Edata: add an "age" field.
6599651ae PA: Use an SEC in fron of the HPA shard.
ea51e97bb Add SEC module: a small extent cache.
1964b0839 HPA: Add stats for the hpa_shard.
534504d4a HPA: add size-exclusion functionality.
484f04733 HPA: Add central mutex contention stats.
bf025d2ec HPA: Make slab sizes and maxes configurable.
1c7da3331 HPA: Tie components into a PAI implementation.
c8209150f Switch from opt.lg_tcache_max to opt.tcache_max
5ba861715 Add thread name in prof last-N records
4ef5b8b4d Add a logo to doc_internal.
5e41ff9b7 Add a hard limit on tcache max size class.
3de19ba40 Eagerly detect double free and sized dealloc bugs for large sizes.
be9548f2b Tcaches: Fix a subtle race condition.
a9aa6f6d0 Fix the alloc_ctx check in free_fastpath.
b971f7c4d Add "default" option to slab sizes.
21b70cb54 Add hpa_central module
1ed7ec369 Emap: Add emap_assert_not_mapped.
2a6ba121b PRNG test: cleanups.
9e6aa77ab PRNG: Remove atomic functionality.
051304717 PRNG: Allow a a range argument of 1.
bdb60a805 Appveyor: don't update msys2 keyring.
025d8c37c Add a script to check for clang-formattedness.
f6bbfc1e9 Add a .clang-format file.
259c5e3e8 psset: Add stats
018b162d6 Add psset: a set of pageslabs.
ed99d300b Flat bitmap: Add longest-range computation.
e03450069 Edata: rename "ranged" bit to "pai".
7ad2f7866 Avoid a -Wundef warning on LG_SLAB_MAXREGS.
40cf71a06 Remove --with-slab-maxregs options from INSTALL.md
36ebb5abe CI support for PPC64LE architecture
1541ffc76 configure: add --with-lg-slab-maxregs configure option.
d243b4ec4 Add PROFILING_INTERNALS.md
09eda2c9b Add unit tests for usize in prof recent records
b549389e4 Correct usize in prof last-N record
202f01d4f Fix szind computation in profiling
866231fc6 Do not repeat reentrancy test in profiling
20f2479ed Do not create size class tables for non-prof builds
8efcdc3f9 Move unbias data to prof_data
5e90fd006 Geom_grow: Don't keep the mutex internal.
c57494879 Geom_grow: Don't take tsdn at init.
ffe552223 Geom_grow: Move in advancing logic.
131b1b533 Rename ecache_grow -> geom_grow.
b399463fb flat_bitmap unit test: Silence a warning.
b0ffa39ca Mallctl stress test: fix a type.
753bbf184 Benchmarks: Also print ns / iter.
7b187360e IO: Support 0-padding for unsigned numbers.
32d467322 Add a mallctl speed stress test.
38867c5c1 Makefile: alphabetize stress/analyze utilities.
ab274a23b Add narenas_ratio.
9e18ae639 Config: safety checks don't imply size checks.
8f9e958e1 Add alignment stress test for rallocx
743021b63 Fix size miscalculation bug in reallocation
eaed1e39b Add sized-delete size-checking functionality.
53084cc5c Safety check: Don't directly abort.
60993697d Prof: Add prof_unbias.
81c2f841e Add a simple utility to detect profiling bias.
e032a1a1d Add a stress test for batch allocation
f6cf5eb38 Add mallctl for batch allocation API
978f830ee Add batch allocation API
c6f59e9bb Add surplus reading API for thread event lookahead
f80546895 Add zero option to arena batch allocation
49e5c2fe7 Add batch allocation from fresh slabs
2bb8060d5 Add empty test and concat for typed list
f28cc2bc8 Extract bin shard selection out of bin locking
ddb8dc4ad FB: Add range iteration support.
ceee82351 Add flat_bitmap.
7fde6ac49 Nbits: Add a couple more interesting sizes.
efeab1f49 bitset test: Pull NBITS_TAB into its own file.
22da83609 bit_util: Add fls_ functions; "find last set".
1ed0288d9 bit_util: Change ffs functions indexing.
786a27b9e CI: Update keyring.
fb347dc61 Verify output space before doing heavy work in mallctl
f5fb4e5a9 Modify mallctl output length when needed
425840204 Corrections for prof_log_start()
e6cb7a1c9 Shorten wait time for peak events
6107857b7 PA->PAC: Move in PAI implementation.
6041aaba9 PA -> PAC: Move in destruction functions.
cbf096b05 Arena: remove redundant bg inactivity check.
471eb5913 PAC: Move in decay rate setting.
6a2774719 PA->PAC: Move in decay functions.
4ee75be3a PA -> PAC: Move in decay_purge enum.
72435b0ab PA->PAC: Make extent.c forget about PA.
dee5d1c42 PA->PAC: Move in extent_sn.
739138234 PA->PAC: Move in stats.
db211eefb PAC: Move in decay.
c81e38999 PAC: Move in ecache_grow.
65803171a PAC: move in emap
7efcb946c PAC: Add an init function.
722652222 PAC: Move in edata_cache accesses.
777b0ba96 Add PAC: Page allocator classic.
1b5f632e0 Introduce PAI: Page allocator interface
3cf19c6e5 atomic: add atomic_load_sub_store
f1f4ec315 Tcache: Tweak nslots_max tuning parameter.
ae541d3fa Edata: Reserve some space for hugepages.
392f645f4 Edata: split up different list linkage uses.
129b72705 Add typed-list module.
00f06c9be enabling mpss on solaris/illumos.
c2e7a0639 No need to intercept prof_dump_header() in tests
f58ebdff7 Generalize prof_cnt_all() for testing
80d18c18c Pass prof dump parameters explicitly in prof_sys
d4259ea53 Simplify signatures for prof dump functions
5d823f3a9 Consolidate struct definitions for prof dump parameters
1f5fe3a3e Pass write callback explicitly in prof_data
4556d3c0c Define structures for prof dump parameters
1c6742e6a Migrate prof dumping to use buffered writer
dad821bb2 Move unwind to prof_sys
d128efcb6 Relocate a few prof utilities to the right modules
4736fb4fc Move file handling logic in prof_data to prof_sys
767a2e179 Move file handling logic in prof to prof_sys
03ae509f3 Create prof_sys module for reading system thread name
adfd9d7b1 Change tsdn to tsd for thread name allocation
841af2b42 Move thread name handling to prof_data module
8118056c0 Expose prof_data testing internals only in prof tests
f43ac8543 Correct prof header macro namings
c8683bee8 Unify printing for prof counts object
5d292b566 Push error handling logic out of core dumping logic
f541871f5 Reduce prof dump buffer size in debug build
354183b10 Define prof dump buffer size centrally
7455813e5 Make dump file writing replaceable in test
21e44c45d Make maps file opening replaceable in test
4bb4037db Extract utility function for opening maps file
f307b2580 Only replace the dump file opening function in test
d8cea8756 Move size inspections to test/analyze
537a4bedb Add a tool to examine random number distributions
d460333ef Improve naming for prof system thread name option
25e43c602 Witness: Make ranks an enum.
092fcac0b Remove unnecessary source files
a795b1932 Remove beginning define in source files
24bbf376c Unify arena flag reading and selection
e128b170a Do not fallback to auto arena when manual arena is requested
95a59d2f7 Unify tcache flag reading and selection
4b0c00848 Unify zero flag reading and setting
2a84f9b8f Unify alignment flag reading and computation
b7858abfc Expose prof testing internal functions
40fa6674a Fix prof timestamp conf reading
7e09a57b3 stress/sizes: Fix an off-by-one issue.
dcfa6fd50 stress/sizes: Add a couple more types.
40672b0b7 Remove duplicate logging in malloc.
4aea74327 High Resolution Timestamps for Profiling
d82a164d0 Add thread.peak.[read|reset] mallctls.
fe7108305 Add peak_t, for tracking allocator net max.
17a64fe91 Add a small program to print data structure sizes.
3e19ebd2e Add lock to protect prof last-N dumping
a835d9cf8 Make prof last-N dumping non-blocking
fc8bc4b5c Increase dump buffer for prof last-N list
264d89d64 Extract restore and async cleanup functions for prof last-N list
857ebd3da Make edata pointer on prof recent record an atomic fence
b8bdea6b2 Fix: prof_recent_alloc_max_ctl_read() does not take tsd
730658f72 Extract alloc/dalloc utility for last-N nodes
035be4486 Separate out dumping for each prof recent record
8da0896b7 Tcache: Make an integer conversion explicit.
cd28e6033 Don't warn on uniform initialization.
6cdac3c57 Tcache: Make flush fractions configurable.
7503b5b33 Stats, CTL: Expose new tcache settings.
ee72bf1cf Tcache: Add tcache gc delay option.
d338dd45d Tcache: Make incremental gc bytes configurable.
ec0b57956 Tcache: Privatize opt_lg_tcache_max default.
10b96f635 Tcache: Remove some unused gc constants.
181093173 Tcache: make slot sizing configurable.
b58dea8d1 Cache bin: expose ncached_max publicly.
634afc412 Tcache: Make size computation configurable.
97b7a9cf7 Add a fill/flush microbenchmark.
33372cbd4 cpu instruction spin wait for arm32/64
27f29e424 LQ_QUANTUM should be 4 on mips64 hardware.
eda9c2858 Edata: zero stack edatas before initializing.
5dead37a9 Allow narenas:default.
dcea2c0f8 Get rid of TSD -> thread event dependency
75dae934a Always initialize TE counters in TSD init
b06dfb9cc Push event handlers to constituent modules
381c97caa Treat postponed prof sample event as new event
abd467493 Extract out per event postponed wait time fetching
f72014d09 Only compute thread event threshold once per trigger
7324c4f85 Break down event init and handler functions
6de77799d Move thread event wait time update to local
733ae918f Extract out per event new wait time fetching
1e2524e15 Do not reset sample wait time when re-initing tdata
855d20f6f Remove outdated comments in thread event
fc052ff72 Migrate counter to use locked int
b543c20a9 Minor update to locked int
f533ab6da Add forking handling for stats
508303077 Add forking handling for prof idump counter
4d970f8bf Add forking handling for counter module
2097e1945 Unify write callback signature
fef9abdcc Cleanup tcache allocation logic
e6cb6919c Consolidate prof inline function headers
d454af90f Remove unused prof_accum field from arena
8be558449 Initialize prof idump counter once rather than once per arena
e10e5059e Make prof_idump_accum() non-inline
039bfd4e3 Do not rollback prof idump counter in arena_prof_promote()
0295aa38a Deduplicate entries in witness error message
f1f8a7549 Let opt.zero propagate to core allocation.
2c09d4349 Add a benchmark of large allocations.
46471ea32 SC: Name the max lookup constant.
79dd0c04e SC: Simplify SC_NPSIZES computation.
fb6cfffd3 Configure: Get rid of LG_QUANTA.
4f8efba82 TSD: Make rtree_ctx a slow-path field.
cd29ebefd Tcache: treat small and large cache bins uniformly
a13fbad37 Tcache: split up fast and slow path data.
7099c6620 Arena: fill in terms of cache_bins.
40e7aed59 TSD: Move in some of the tcache fields.
58a00df23 TSD: Put all fast-path data together.
3589571bf SC: use SC_LG_NGROUP instead of its value.
877af247a QL, QR: Add documentation.
79ae7f921 Rtree: Remove the per-field accessors.
26e9a3103 PA: Simple decay test.
bb6a41852 Emap: Drop szind/slab splitting parameters.
50289750b Extent: Remove szind/slab knowledge.
dc26b3009 Rtree: Clean up compact/non-compact split.
93b99dd14 Extent: Stop passing an edata_cache everywhere.
a4759a191 Ehooks: avoid touching arena_emap_global in tests.
11c47cb13 Extent: Take "bool zero" over "bool *zero".
1a1124462 PA: Take zero as a bool rather than as a bool *.
294b276fc PA: Parameterize emap. Move emap_global to arena.
f73057727 Eset: Parameterize last globals accesses.
7bb6e2dc0 Eset: take opt_lg_max_active_fit as a parameter.
883ab327c Emap: Move out last edata state touching.
0c96a2f03 Emap: Move out remaining edata modifications.
dfef0df71 Emap: Move edata modification out of emap_remap.
12eb888e5 Edata: Add a ranged bit.
bd4fdf295 Rtree: Pull leaf contents into their own struct.
faec7219b PA: Move in decay initialization.
45671e4a2 PA: Move in retain growth limit setting.
daefde88f PA: Move in mutex stats reading.
07675840a PA: Move in some more internals accesses.
238f3c743 PA: Move in full stats merging.
81c602759 Arena stats: Give it its own "mapped".
506d907e4 PA: Move in basic stats merging.
f29f6090f PA: Add pa_extra.c and put PA forking there.
8164fad40 Stats: Fix edata_cache size merging.
565045ef7 Arena: Make more derived stats non-atomic/locked.
d0c43217b Arena stats: Move retained to PA, use plain ints.
e2cf3fb1a PA: Move in all modifications of mapped.
436789ad9 PA: Make mapped stat atomic.
3c28aa6f1 PA: Move edata_avail stat in, make it non-atomic.
f6bfa3dcc Move extent stats to the PA module.
527dd4cdb PA: Move in nactive counter.
c075fd0bc PA: Minor cleanups and comment fixes.
46a9d7fc0 PA: Move in rest of purging.
2d6eec7b5 PA: Move in decay-all pathway.
65698b7f2 PA: Remove public visibility of some internals.
f012c43be PA: Move in decay_to_limit
103f5feda Move bg thread activity check out of purging core.
3034f4a50 PA: Move in decay_stashed.
aef28b2f8 PA: Move in stash_decayed.
655a09634 Move bg inactivity check out of purge inner loop.
71fc0dc96 PA: Move in remaining page allocation functions.
74958567a PA: have expand take sizes instead of new usize.
5bcc2c2ab PA: Have expand take szind and slab.
0880c2ab9 PA: Have large expands use it.
7be3dea82 PA: Have slab allocations use it.
9f93625c1 PA: Move in arena large allocation functionality.
7624043a4 PA: Add ehook-getting support.
eba35e2e4 Remove extent knowledge of arena.
e77f47a85 Move arena decay getters to PA.
48a2cd6d7 Decay: Add a (mostly stub) test case.
f77cec311 Decay: Take current time as an argument.
bf55e58e6 Rename test/unit/decay -> test/unit/arena_decay.
d1d7e1076 Decay: move in some background_thread accesses.
cdb916ed3 Decay: Add comments for the public API.
8f2193dc8 Decay: Move in arena decay functions.
4d090d23f Decay: Introduce a stub .c file.
7b6288547 Introduce decay module and put decay objects in PA
497836dbc Arena stats: mark edata_avail as derived.
3192d6b77 Extents: Have extent_dalloc_gap take ehooks.
22a0a7b93 Move arena_decay_extent to extent module.
70d12ffa0 PA: Move mapped into pa stats.
6ca918d0c PA: Add a stats comment.
ce8c0d6c0 PA: Move in arena extent_sn counter.
1ada4aef8 PA: Get rid of arena_ind_get calls.
1ad368c8b PA: Move in decay stats.
356aaa7dc Introduce lockedint module.
acd0bf6a2 PA: move in ecache_grow.
32cb7c2f0 PA: Add a stats type.
688fb3eb8 PA: Move in the arena edata_cache.
8433ad84e PA: move in shard initialization.
a24faed56 PA: Move in the ecache_t objects.
585f92505 Move cache index randomization out of extent.
12be9f572 Add a stub PA module -- a page allocator.
c4e9ea8cc Get rid of locks in prof recent test
2deabac07 Get rid of custom iterator for last-N records
a5ddfa7d9 Use ql for prof last-N list
8da6676a0 Don't do reentrant testing in junk tests.
ce17af422 Better structure ql module
4b66297ea Add move constructor to ql module
a62b7ed92 Add emptiness checking to ql module
1dd24ca6d Add rotate functionality to ql module
0dc95a882 Add concat and split functionality to ql module
1ad06aa53 deduplicate insert and delete logic in qr module
c9d56cddf Optimize meld in qr module
0d6d9e858 configure.ac: Put public symbols on one line.
f9aad7a49 Add piping API to buffered writer
09cd79495 Encapsulate buffer allocation failure in buffered writer
a166c2081 Make prof_tctx_t pointer a true prof atomic fence
d936b46d3 Add malloc_conf_2_conf_harder
3b4a03b92 Mac: don't declare system functions as nothrow.
2256ef896 Add option to fetch system thread name on each prof sample
ccdc70a5c Fix: assertion could abort on past failures
b30a5c2f9 Reorganize cpp APIs and suppress unused function warnings
2e5899c12 Stats: Fix tcache_bytes reporting.
a5780598b Remove thread_event_rollback()
ba783b3a0 Remove prof -> thread_event dependency
441d88d1c Rewrite profiling thread event
0dcd57660 Edata cache: atomic fetch-add -> load-store.
99b1291d1 Edata cache: add edata_cache_small_t.
734109d9c Edata cache: add a unit test.
e732344ef Inspect test: Reduce checks when profiling is on.
92485032b Cache bin: improve comments.
d701a085c Fast path: allow low-water mark changes.
397da0386 Cache bin: rewrite to track more state.
fef0b1ffe Cache bin: Remove last internals accesses.
0a2fcfac0 Tcache: Hold cache bin allocation explicitly.
d498a4bb0 Cache bin: Add an emptiness assertion.
6a7aa46ef Cache bin: Add a debug method for init checking.
370c1ea00 Cache bin: Write the unit test in terms of the API
7f5ebd211 Cache bin: set low-water internally.
60113dfe3 Cache bin: Move in initialization code.
44529da85 Cache-bin: Make flush modifications internal
ff6acc6ed Cache bin: simplify names and argument ordering.
e1dcc557d Cache bin: Only take the relevant cache_bin_info_t
1b00d808d cache_bin: Don't let arena see empty position.
d303f3079 cache_bin nflush -> n.
74d36d78e Cache bin: Make ncached_max a query on the info_t.
b66c0973c cache_bin: Don't allow direct internals access.
da68f7329 Move percpu_arena_update.
909c501b0 Cache_bin: Shouldn't know about tcache.
79f1ee2fc Move junking out of arena/tcache code.
b428dceea Config: Warn on void * pointer arithmetic.
22657a5e6 Extents: Silence the "potentially unused" warning.
4a78c6d81 Correct thread event unit test
305b1f6d9 Correction on geometric sampling
6c3491ad3 Tcache: Unify bin flush logic.
9f4fc2738 Ehooks: Fix a build warning.
bc31041ed Cirrus-CI: test on new freebsd releases.
51bd14742 Make use of assert_* in test/unit/thread_event.c
9d2cc3b0f Make use of assert_* in test/unit/prof_recent.c
a88d22ea1 Make use of assert_* in test/unit/inspect.c
0ceb31184 Make use of assert_* in test/unit/buf_writer.c
fa6157938 Add assert_* functionality to tests
21dfa4300 Change assert_* to expect_* in tests
162c2bcf3 Background thread: take base as a parameter.
29436fa05 Break prof and tcache knowledge of b0.
a0c1f4ac5 Rtree: take the base allocator as a parameter.
7013716aa Emap: Take (and propagate) a zeroed parameter.
182192f83 Base: Pull into a single header.
34b7165fd Put szind_t, pszind_t in sz.h.
7e6c8a728 Emap: Standardize naming.
ac50c1e44 Emap: Remove direct access to emap internals.
06e42090f Make jemalloc.c use the emap interface.
f7d9c6c42 Emap: Move in alloc_ctx lookup functionality.
65a54d771 Emap: Move in szind and slab modifications.
9b5d105fc Emap: Move in iealloc.
1d449bd9a Emap: Internal rtree context setting.
08eb1e6c3 Emap: Comments and cleanup
231d1477e Rename emap_split_prepare_t -> emap_prepare_t.
0586a56f3 Emap: Move in merge functionality.
040eac77c Tell edatas their creation arena immediately.
7c7b70206 Emap: Move over metadata splitting logic.
44f5f5360 Emap: Move over deregistration functions.
6513d9d92 Emap: Move over deregistration boundary functions.
9b5ca0b09 Emap: Move in slab interior registration.
d05b61db4 Emap: Move extent boundary registration in.
ca21ce407 Emap: Move in write_acquired from extent.
01f255161 Add emap, for tracking extent locking.
0f686e82a Avoid variable length array with length 0.
68e8ddcaf Add mallctl for dumping last-N profiling records
bc05ecebf Add const qualifier in assert_cmp()
ba0e35411 Rework the bin locking around tcache refill / flush.
7fd22f7b2 Fix Undefined Behavior in hash.h
ca1f08225 Disallow merge across mmap regions to preserve SN / first-fit.
7014f81e1 Add ASSURED_WRITE in mallctl
247688919 Add inspect.c to MSVC filters
9cac3fa8f Encapsulate buffer allocation in buffered writer
bdc08b515 Better naming buffered writer
c6bfe5585 Update the tsd description.
e89652261 Abbreviate thread-event to te.
5e500523a Remove thread_event_boot().
97dd79db6 Implement deallocation events.
536ea6858 NetBSD specific changes: - NetBSD overcommits - When mapping pages, use the maximum of the alignment requested and the compiled-in PAGE constant which might be greater than the current kernel pagesize, since we compile binaries with the maximum page size supported by the architecture (so that they work with all kernels).
974222c62 Add safety check on sdallocx slow / sampled path.
88d9eca84 Enforce page alignment for sampled allocations.
0f552ed67 Don't purge huge extents when decay is off.
38a48e574 Set reentrancy to 1 for tsd_state_purgatory.
88b0e03a4 Implement opt.stats_interval and the _opts options.
d71a145ec Chagne prof_accum_t to counter_accum_t for general purpose.
ea351a7b5 Fix syntax errors in doc for thread.idle.
d92f0175c Introduce NEITHER_READ_NOR_WRITE in ctl.
6a622867c Add "thread.idle" mallctl.
f81341a48 Fallback to unbuffered printing if OOM
cd6e90824 Add stress test for last-N profiling mode
84b28c6a1 Properly handle tdata deletion race
d33120856 Get rid of redundant logic in prof
a72ea0db6 Restructure and correct sleep utility for testing
7b67ed0b5 Get rid of lock overlap in prof_recent_alloc_reset
bd3be8e0b Remove commit parameter to ecache functions.
b8df719d5 No tdata creation for backtracing on dying thread
dab81bd31 Rework and fix the assertions on malloc fastpath.
ad3f3fc56 Fetch time after tctx and only for samples
a5d3dd405 Fix an assertion on extent head state with dss.
2b604a301 Record request size in prof recent entries
40a391408 Define constructor for buffered writer argument
6d8e61690 Make buffered writer an independent module
6b6b4709b Unify buffered writer naming
9a60cf54e Last-N profiling mode
7a27a0594 Delete tdata states used for cleanup
e98ddf798 Fix unlikely condition in arena_prof_info_get()
3fa142cf3 Remove _externs from prof internal header names
112dc36dd Handle log_mtx during forking
ea42174d0 Refactor profiling headers
6342da097 Ehooks: Further optimize default merge case.
f2f2084e7 Ehooks: Assert alloc isn't NULL
e210ccc57 Move extent2 -> extent.
2f4fa8041 Rename extents -> ecache.
56cc56b69 Break extent split dependence on arena.
0aa9769fb Break commit functions' arena dependence
48ec5d435 Break extent_coalesce arena dependence
282a38232 Extent: Break [de]activation's arena dependence.
576d7047a Ecache: Should know its arena_ind.
372042a08 Remove merge dependence on the arena.
439219be7 Remove extent_can_coalesce arena dependency.
9cad5639f Ehooks: remove arena_ind parameter.
57fe99d4b Move relevant index into the ehooks_t itself.
c792f3e4a edata_cache: Remember the associated base_t.
ae23e5f42 Unify extent_alloc_wrapper with the other wrappers.
d8b0b66c6 Put extent_state_t into ecache as well as eset.
98eb40e56 Move delay_coalesce from the eset to the ecache.
bb70df8e5 Extent refactor: Introduce ecache module.
070451624 Ehooks: Add head tracking.
09475bf8a extent_may_dalloc -> ehooks_dalloc_will_fail
785918417 Pull out edata_t caching into its own module.
a7862df61 Rename extent_t to edata_t.
865debda2 Rename extent.h -> edata.h.
a738a66b5 Ehooks: Add some debug zero and addr checks.
4b2e5ee8b Ehooks: Add a "zero" ehook.
d0f187ad3 Arena: Loosen arena_may_have_muzzy restrictions.
ebbb97327 Base: Remove some unnecessary reentrancy guards.
403f2d166 Extents: Split out introspection functionality.
92a511d38 Make extent module hermetic.
e08c581cf Extent: Get rid of extent-specific pre/post reentrancy calls.
39fdc690a Ehooks comments and cleanup.
c8dae890c Extent -> Ehooks: Move over default hooks.
2fe510826 Extent -> Ehooks: Move merge hook.
1fff4d2ee Extent -> Ehooks: Move split hook.
a5b42a1a1 Extent -> Ehooks: Move purge_forced hook.
368baa42e Extent -> Ehooks: Move purge_lazy hook.
f83fdf533 Extent: Clean up a comma
d78fe241a Extent -> Ehooks: Move commit and decommit hooks.
5459ec9da Extent -> Ehooks: Move destroy hook.
bac8e2e5a Extent -> Ehooks: Move dalloc hook.
dc8b4e6e1 Extent -> Ehooks: Move alloc hook.
703fbc0ff Introduce unsafe reentrancy guards.
ae0d8e859 Move extent ehook calls into ehooks
ba8b9ecbc Add ehooks module
837119a94 base_structs.h: Remove some mid-line tabs.
9f6eb0958 Extents: Eagerly initialize extent hooks.
4278f8460 Move extent hook getters/setters to arena.c
9226e1f0d fix opt.thp:never still use THP with base_new
d5031ea82 Allow dallocx and sdallocx after tsd destruction.
4afd709d1 Restructure setters for profiling info
1d01e4c77 Initialization utilities for nstime
dd649c948 Optimize away the tsd_fast() check on fastpath.
1decf958d Fix incorrect usage of cassert.
45836d7fd Pass nstime_t pointer for profiling
7d2bac5a3 Refactor destroy code path for prof_tctx
055478cca Threshold is no longer updated before prof_realloc()
7e3671911 Get rid of old indentation style for prof
dfdd46f6c Refactor prof_tctx_t creation
aa1d71fb7 Rename prof_tctx to alloc_tctx in prof_info_t
5e0b09099 No need to pass usize to prof_tctx_set()
1b1e76acf Disable some spuriously-triggering warnings
a70909b13 Test on all supported release of FreeBSD
5c47a3022 Guard C++ aligned APIs
694537177 Change tsdn to tsd for profiling code path
b55419f9b Restructure profiling
8b2c2a596 Support C++17 over-aligned allocation
9a3c73800 Refactor arena_bin_malloc_hard().
9a7ae3c97 Reduce footprint of bin_t.
cb1a1f4ad Remove the unnecessary alloc_ctx on free_fastpath.
716061710 Add branch hints to free_fastpath.
a787d2f5b Prefer getaffinity() to detect number of CPUs.
04cb7d4d6 Bail out early for muzzy decay.
73510dfd1 Revert "Fix bug in prof_realloc"
3b5eecf10 Fix bug in prof_realloc
e4c36a6f3 Emphasize no modification through thread.allocatedp allowed.
c462753cc Use __forceinline for JEMALLOC_ALWAYS_INLINE on msvc
836d7a7e6 Check for large size first in the uncommon case of malloc.
9c59abe42 Fix a typo in Makefile.
da50d8ce8 Refactor and optimize prof sampling initialization.
bc774a351 Rename tsd->offset_state to tsd->prng_state.
19a51abf3 Avoid arena->offset_state when tsd not available for prng.
d01b425e5 Add -Wimplicit-fallthrough checks if supported
a8b578d53 Remove mallctl test for zero_realloc
43f0ce92d Define general purpose tsd_thread_event_init()
97f93fa0f Pull tcache GC events into thread event handler
198f02e79 Pull prof_accumbytes into thread event handler
152c0ef95 Build a general purpose thread event handler
6924f83cb use SYS_openat when available
de81a4ead Add stats counters for number of zero reallocs
9cfa80594 Realloc: Make behavior of realloc(ptr, 0) configurable.
ee961c231 Merge realloc and rallocx pathways.
bd6e28d6a Guard slabcur fetching in extent_util
4786099a3 Increase column width for global malloc/free rate
05681e387 Optimize cache_bin_alloc_easy for malloc fast path
4fe50bc7d Fix amd64 MSVC warning
4fbbc817c Simplify time setting and getting for prof log
4094b7c03 Limit # of iters of test_bitmap_xfu.
66e07f986 Suppress tdata creation in reentrancy
beb7c16e9 Guard prof_active reset by opt_prof
1df9dd351 Fix je_ prefix issue in test
3d84bd57f Arena: Add helper function arena_get_from_extent.
c97d25575 Eset: Remove temporary declaration.
ce5b128f1 Remove the undefined extent_size_quantize declarations.
821dd53a1 Extent -> Eset: Rename arena members.
e144b21e4 Extent -> Eset: Move fork handling.
77bbb35a9 Extent -> Eset: Move extent fit functions.
1210af9a4 Extent -> Eset: Move insertion and removal.
a42861540 Extents -> Eset: Convert some stats getters.
820f070c6 Move page quantization to sz module.
63d1b7a7a Extents -> Eset: move extents_state_get.
b416b96a3 Extents -> Eset: rename/move extents_init.
e6180fe1b Eset: Add a source file.
4e5e43f22 Rename extents_t -> eset_t.
723ccc6c2 Extents: Split out extent struct.
41187bdfb Extents: Break extent-struct/arena interactions
529cfe2ab Arena: rename arena_structs_b.h -> arena_structs.h
e7cf84a8d Rearrange slab data and constants
d1be488cd Add --with-lg-page=16 to CI.
ac5185f73 Fix tcache bin stack alignment.
b7c7df24b Add max_per_bg_thd stats for per background thread mutexes.
4b76c684b Add "prof.dump_prefix" to override filename prefixes for dumps.
242af439b Rename "prof_dump_seq_mtx" to "prof_dump_filename_mtx".
e06658cb2 check GNU make exists in path
22bc75ee3 Workaround the stringop-overflow check false positives.
93d615180 Pass tsd down to prof_backtrace()
671f120e2 Fix prof_backtrace() reentrancy level
785b84e60 Make cache_bin_sz_t unsigned.
23dc7a7fb Fix index type for cache_bin_alloc_easy.
2abb02ecd Fix MSVC 2015 build, as proposed by @christianaguilera-foundry.
719583f14 Fix large.nflushes in the merged stats.
adce29c88 Optimize for prof_active off
49e6fbce7 Always adjust thread_(de)allocated
57b81c078 Pull thread_(de)allocated out of config_stats
9e031c1d1 Bug fix for prof_active switch
0043e68d4 Track low_water == -1 case explicitly.
937ca1db9 Store ncached_max * ptr_size in tcache_bin_info.
7599c82d4 Redesign the cache bin metadata for fast path.
d2dddfb82 Add hint in the bogus version string.
d6b7995c1 Update INSTALL.md about the default doc build.
e2c758436 Simplify / refactor tcache_dalloc_large.
9c5c2a2c8 Unify the signature of tcache_flush small and large.
28ed9b9a5 Buffer stats printing
eb70fef8c Make compact json format as default
a219cfcda Clear tcache prof_accumbytes in tcache_flush_cache
ad3f7dbfa Buffer prof_log_stop
593484661 Fix large bin index accessed through cache bin descriptor.
22746d3c9 Properly dalloc prof nodes with idalloctm.
8c8466fa6 Add compact json option for emitter
7fc6b1b25 Add buffered writer
39343555d Report stats for tdatas_mtx and prof_dump_mtx
87e2400cb Fix tcaches mutex pre- / post-fork handling.
07ce2434b Refactor profiling
56126d0d2 Refactor prof log
56c8ecffc Correct tsd layout graph
git-subtree-dir: deps/jemalloc
git-subtree-split: 54eaed1d8b56b1aa528be3bdd1877e59c56fa90c
2023-05-01 08:35:09 -04:00
|
|
|
* 5.3.0 (May 6, 2022)
|
|
|
|
|
|
|
|
|
|
This release contains many speed and space optimizations, from micro
|
|
|
|
|
optimizations on common paths to rework of internal data structures and
|
|
|
|
|
locking schemes, and many more too detailed to list below. Multiple percent
|
|
|
|
|
of system level metric improvements were measured in tested production
|
|
|
|
|
workloads. The release has gone through large-scale production testing.
|
|
|
|
|
|
|
|
|
|
New features:
|
|
|
|
|
- Add the thread.idle mallctl which hints that the calling thread will be
|
|
|
|
|
idle for a nontrivial period of time. (@davidtgoldblatt)
|
|
|
|
|
- Allow small size classes to be the maximum size class to cache in the
|
|
|
|
|
thread-specific cache, through the opt.[lg_]tcache_max option. (@interwq,
|
|
|
|
|
@jordalgo)
|
|
|
|
|
- Make the behavior of realloc(ptr, 0) configurable with opt.zero_realloc.
|
|
|
|
|
(@davidtgoldblatt)
|
|
|
|
|
- Add 'make uninstall' support. (@sangshuduo, @Lapenkov)
|
|
|
|
|
- Support C++17 over-aligned allocation. (@marksantaniello)
|
|
|
|
|
- Add the thread.peak mallctl for approximate per-thread peak memory tracking.
|
|
|
|
|
(@davidtgoldblatt)
|
|
|
|
|
- Add interval-based stats output opt.stats_interval. (@interwq)
|
|
|
|
|
- Add prof.prefix to override filename prefixes for dumps. (@zhxchen17)
|
|
|
|
|
- Add high resolution timestamp support for profiling. (@tyroguru)
|
|
|
|
|
- Add the --collapsed flag to jeprof for flamegraph generation.
|
|
|
|
|
(@igorwwwwwwwwwwwwwwwwwwww)
|
|
|
|
|
- Add the --debug-syms-by-id option to jeprof for debug symbols discovery.
|
|
|
|
|
(@DeannaGelbart)
|
|
|
|
|
- Add the opt.prof_leak_error option to exit with error code when leak is
|
|
|
|
|
detected using opt.prof_final. (@yunxuo)
|
|
|
|
|
- Add opt.cache_oblivious as an runtime alternative to config.cache_oblivious.
|
|
|
|
|
(@interwq)
|
|
|
|
|
- Add mallctl interfaces:
|
|
|
|
|
+ opt.zero_realloc (@davidtgoldblatt)
|
|
|
|
|
+ opt.cache_oblivious (@interwq)
|
|
|
|
|
+ opt.prof_leak_error (@yunxuo)
|
|
|
|
|
+ opt.stats_interval (@interwq)
|
|
|
|
|
+ opt.stats_interval_opts (@interwq)
|
|
|
|
|
+ opt.tcache_max (@interwq)
|
|
|
|
|
+ opt.trust_madvise (@azat)
|
|
|
|
|
+ prof.prefix (@zhxchen17)
|
|
|
|
|
+ stats.zero_reallocs (@davidtgoldblatt)
|
|
|
|
|
+ thread.idle (@davidtgoldblatt)
|
|
|
|
|
+ thread.peak.{read,reset} (@davidtgoldblatt)
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Fix the synchronization around explicit tcache creation which could cause
|
|
|
|
|
invalid tcache identifiers. This regression was first released in 5.0.0.
|
|
|
|
|
(@yoshinorim, @davidtgoldblatt)
|
|
|
|
|
- Fix a profiling biasing issue which could cause incorrect heap usage and
|
|
|
|
|
object counts. This issue existed in all previous releases with the heap
|
|
|
|
|
profiling feature. (@davidtgoldblatt)
|
|
|
|
|
- Fix the order of stats counter updating on large realloc which could cause
|
|
|
|
|
failed assertions. This regression was first released in 5.0.0. (@azat)
|
|
|
|
|
- Fix the locking on the arena destroy mallctl, which could cause concurrent
|
|
|
|
|
arena creations to fail. This functionality was first introduced in 5.0.0.
|
|
|
|
|
(@interwq)
|
|
|
|
|
|
|
|
|
|
Portability improvements:
|
|
|
|
|
- Remove nothrow from system function declarations on macOS and FreeBSD.
|
|
|
|
|
(@davidtgoldblatt, @fredemmott, @leres)
|
|
|
|
|
- Improve overcommit and page alignment settings on NetBSD. (@zoulasc)
|
|
|
|
|
- Improve CPU affinity support on BSD platforms. (@devnexen)
|
|
|
|
|
- Improve utrace detection and support. (@devnexen)
|
|
|
|
|
- Improve QEMU support with MADV_DONTNEED zeroed pages detection. (@azat)
|
|
|
|
|
- Add memcntl support on Solaris / illumos. (@devnexen)
|
|
|
|
|
- Improve CPU_SPINWAIT on ARM. (@AWSjswinney)
|
|
|
|
|
- Improve TSD cleanup on FreeBSD. (@Lapenkov)
|
|
|
|
|
- Disable percpu_arena if the CPU count cannot be reliably detected. (@azat)
|
|
|
|
|
- Add malloc_size(3) override support. (@devnexen)
|
|
|
|
|
- Add mmap VM_MAKE_TAG support. (@devnexen)
|
|
|
|
|
- Add support for MADV_[NO]CORE. (@devnexen)
|
|
|
|
|
- Add support for DragonFlyBSD. (@devnexen)
|
|
|
|
|
- Fix the QUANTUM setting on MIPS64. (@brooksdavis)
|
|
|
|
|
- Add the QUANTUM setting for ARC. (@vineetgarc)
|
|
|
|
|
- Add the QUANTUM setting for LoongArch. (@wangjl-uos)
|
|
|
|
|
- Add QNX support. (@jqian-aurora)
|
|
|
|
|
- Avoid atexit(3) calls unless the relevant profiling features are enabled.
|
|
|
|
|
(@BusyJay, @laiwei-rice, @interwq)
|
|
|
|
|
- Fix unknown option detection when using Clang. (@Lapenkov)
|
|
|
|
|
- Fix symbol conflict with musl libc. (@georgthegreat)
|
|
|
|
|
- Add -Wimplicit-fallthrough checks. (@nickdesaulniers)
|
|
|
|
|
- Add __forceinline support on MSVC. (@santagada)
|
|
|
|
|
- Improve FreeBSD and Windows CI support. (@Lapenkov)
|
|
|
|
|
- Add CI support for PPC64LE architecture. (@ezeeyahoo)
|
|
|
|
|
|
|
|
|
|
Incompatible changes:
|
|
|
|
|
- Maximum size class allowed in tcache (opt.[lg_]tcache_max) now has an upper
|
|
|
|
|
bound of 8MiB. (@interwq)
|
|
|
|
|
|
|
|
|
|
Optimizations and refactors (@davidtgoldblatt, @Lapenkov, @interwq):
|
|
|
|
|
- Optimize the common cases of the thread cache operations.
|
|
|
|
|
- Optimize internal data structures, including RB tree and pairing heap.
|
|
|
|
|
- Optimize the internal locking on extent management.
|
|
|
|
|
- Extract and refactor the internal page allocator and interface modules.
|
|
|
|
|
|
|
|
|
|
Documentation:
|
|
|
|
|
- Fix doc build with --with-install-suffix. (@lawmurray, @interwq)
|
|
|
|
|
- Add PROFILING_INTERNALS.md. (@davidtgoldblatt)
|
|
|
|
|
- Ensure the proper order of doc building and installation. (@Mingli-Yu)
|
|
|
|
|
|
2021-10-10 11:26:48 -04:00
|
|
|
* 5.2.1 (August 5, 2019)
|
|
|
|
|
|
|
|
|
|
This release is primarily about Windows. A critical virtual memory leak is
|
|
|
|
|
resolved on all Windows platforms. The regression was present in all releases
|
|
|
|
|
since 5.0.0.
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Fix a severe virtual memory leak on Windows. This regression was first
|
|
|
|
|
released in 5.0.0. (@Ignition, @j0t, @frederik-h, @davidtgoldblatt,
|
|
|
|
|
@interwq)
|
|
|
|
|
- Fix size 0 handling in posix_memalign(). This regression was first released
|
|
|
|
|
in 5.2.0. (@interwq)
|
|
|
|
|
- Fix the prof_log unit test which may observe unexpected backtraces from
|
|
|
|
|
compiler optimizations. The test was first added in 5.2.0. (@marxin,
|
|
|
|
|
@gnzlbg, @interwq)
|
|
|
|
|
- Fix the declaration of the extent_avail tree. This regression was first
|
|
|
|
|
released in 5.1.0. (@zoulasc)
|
|
|
|
|
- Fix an incorrect reference in jeprof. This functionality was first released
|
|
|
|
|
in 3.0.0. (@prehistoric-penguin)
|
|
|
|
|
- Fix an assertion on the deallocation fast-path. This regression was first
|
|
|
|
|
released in 5.2.0. (@yinan1048576)
|
|
|
|
|
- Fix the TLS_MODEL attribute in headers. This regression was first released
|
|
|
|
|
in 5.0.0. (@zoulasc, @interwq)
|
|
|
|
|
|
|
|
|
|
Optimizations and refactors:
|
|
|
|
|
- Implement opt.retain on Windows and enable by default on 64-bit. (@interwq,
|
|
|
|
|
@davidtgoldblatt)
|
|
|
|
|
- Optimize away a branch on the operator delete[] path. (@mgrice)
|
|
|
|
|
- Add format annotation to the format generator function. (@zoulasc)
|
|
|
|
|
- Refactor and improve the size class header generation. (@yinan1048576)
|
|
|
|
|
- Remove best fit. (@djwatson)
|
|
|
|
|
- Avoid blocking on background thread locks for stats. (@oranagra, @interwq)
|
|
|
|
|
|
|
|
|
|
* 5.2.0 (April 2, 2019)
|
|
|
|
|
|
|
|
|
|
This release includes a few notable improvements, which are summarized below:
|
|
|
|
|
1) improved fast-path performance from the optimizations by @djwatson; 2)
|
|
|
|
|
reduced virtual memory fragmentation and metadata usage; and 3) bug fixes on
|
|
|
|
|
setting the number of background threads. In addition, peak / spike memory
|
|
|
|
|
usage is improved with certain allocation patterns. As usual, the release and
|
|
|
|
|
prior dev versions have gone through large-scale production testing.
|
|
|
|
|
|
|
|
|
|
New features:
|
|
|
|
|
- Implement oversize_threshold, which uses a dedicated arena for allocations
|
|
|
|
|
crossing the specified threshold to reduce fragmentation. (@interwq)
|
|
|
|
|
- Add extents usage information to stats. (@tyleretzel)
|
|
|
|
|
- Log time information for sampled allocations. (@tyleretzel)
|
|
|
|
|
- Support 0 size in sdallocx. (@djwatson)
|
|
|
|
|
- Output rate for certain counters in malloc_stats. (@zinoale)
|
|
|
|
|
- Add configure option --enable-readlinkat, which allows the use of readlinkat
|
|
|
|
|
over readlink. (@davidtgoldblatt)
|
|
|
|
|
- Add configure options --{enable,disable}-{static,shared} to allow not
|
|
|
|
|
building unwanted libraries. (@Ericson2314)
|
|
|
|
|
- Add configure option --disable-libdl to enable fully static builds.
|
|
|
|
|
(@interwq)
|
|
|
|
|
- Add mallctl interfaces:
|
|
|
|
|
+ opt.oversize_threshold (@interwq)
|
|
|
|
|
+ stats.arenas.<i>.extent_avail (@tyleretzel)
|
|
|
|
|
+ stats.arenas.<i>.extents.<j>.n{dirty,muzzy,retained} (@tyleretzel)
|
|
|
|
|
+ stats.arenas.<i>.extents.<j>.{dirty,muzzy,retained}_bytes
|
|
|
|
|
(@tyleretzel)
|
|
|
|
|
|
|
|
|
|
Portability improvements:
|
|
|
|
|
- Update MSVC builds. (@maksqwe, @rustyx)
|
|
|
|
|
- Workaround a compiler optimizer bug on s390x. (@rkmisra)
|
|
|
|
|
- Make use of pthread_set_name_np(3) on FreeBSD. (@trasz)
|
|
|
|
|
- Implement malloc_getcpu() to enable percpu_arena for windows. (@santagada)
|
|
|
|
|
- Link against -pthread instead of -lpthread. (@paravoid)
|
|
|
|
|
- Make background_thread not dependent on libdl. (@interwq)
|
|
|
|
|
- Add stringify to fix a linker directive issue on MSVC. (@daverigby)
|
|
|
|
|
- Detect and fall back when 8-bit atomics are unavailable. (@interwq)
|
|
|
|
|
- Fall back to the default pthread_create if dlsym(3) fails. (@interwq)
|
|
|
|
|
|
|
|
|
|
Optimizations and refactors:
|
|
|
|
|
- Refactor the TSD module. (@davidtgoldblatt)
|
|
|
|
|
- Avoid taking extents_muzzy mutex when muzzy is disabled. (@interwq)
|
|
|
|
|
- Avoid taking large_mtx for auto arenas on the tcache flush path. (@interwq)
|
|
|
|
|
- Optimize ixalloc by avoiding a size lookup. (@interwq)
|
|
|
|
|
- Implement opt.oversize_threshold which uses a dedicated arena for requests
|
|
|
|
|
crossing the threshold, also eagerly purges the oversize extents. Default
|
|
|
|
|
the threshold to 8 MiB. (@interwq)
|
|
|
|
|
- Clean compilation with -Wextra. (@gnzlbg, @jasone)
|
|
|
|
|
- Refactor the size class module. (@davidtgoldblatt)
|
|
|
|
|
- Refactor the stats emitter. (@tyleretzel)
|
|
|
|
|
- Optimize pow2_ceil. (@rkmisra)
|
|
|
|
|
- Avoid runtime detection of lazy purging on FreeBSD. (@trasz)
|
|
|
|
|
- Optimize mmap(2) alignment handling on FreeBSD. (@trasz)
|
|
|
|
|
- Improve error handling for THP state initialization. (@jsteemann)
|
|
|
|
|
- Rework the malloc() fast path. (@djwatson)
|
|
|
|
|
- Rework the free() fast path. (@djwatson)
|
|
|
|
|
- Refactor and optimize the tcache fill / flush paths. (@djwatson)
|
|
|
|
|
- Optimize sync / lwsync on PowerPC. (@chmeeedalf)
|
|
|
|
|
- Bypass extent_dalloc() when retain is enabled. (@interwq)
|
|
|
|
|
- Optimize the locking on large deallocation. (@interwq)
|
|
|
|
|
- Reduce the number of pages committed from sanity checking in debug build.
|
|
|
|
|
(@trasz, @interwq)
|
|
|
|
|
- Deprecate OSSpinLock. (@interwq)
|
|
|
|
|
- Lower the default number of background threads to 4 (when the feature
|
|
|
|
|
is enabled). (@interwq)
|
|
|
|
|
- Optimize the trylock spin wait. (@djwatson)
|
|
|
|
|
- Use arena index for arena-matching checks. (@interwq)
|
|
|
|
|
- Avoid forced decay on thread termination when using background threads.
|
|
|
|
|
(@interwq)
|
|
|
|
|
- Disable muzzy decay by default. (@djwatson, @interwq)
|
|
|
|
|
- Only initialize libgcc unwinder when profiling is enabled. (@paravoid,
|
|
|
|
|
@interwq)
|
|
|
|
|
|
|
|
|
|
Bug fixes (all only relevant to jemalloc 5.x):
|
|
|
|
|
- Fix background thread index issues with max_background_threads. (@djwatson,
|
|
|
|
|
@interwq)
|
|
|
|
|
- Fix stats output for opt.lg_extent_max_active_fit. (@interwq)
|
|
|
|
|
- Fix opt.prof_prefix initialization. (@davidtgoldblatt)
|
|
|
|
|
- Properly trigger decay on tcache destroy. (@interwq, @amosbird)
|
|
|
|
|
- Fix tcache.flush. (@interwq)
|
|
|
|
|
- Detect whether explicit extent zero out is necessary with huge pages or
|
|
|
|
|
custom extent hooks, which may change the purge semantics. (@interwq)
|
|
|
|
|
- Fix a side effect caused by extent_max_active_fit combined with decay-based
|
|
|
|
|
purging, where freed extents can accumulate and not be reused for an
|
|
|
|
|
extended period of time. (@interwq, @mpghf)
|
|
|
|
|
- Fix a missing unlock on extent register error handling. (@zoulasc)
|
|
|
|
|
|
|
|
|
|
Testing:
|
|
|
|
|
- Simplify the Travis script output. (@gnzlbg)
|
|
|
|
|
- Update the test scripts for FreeBSD. (@devnexen)
|
|
|
|
|
- Add unit tests for the producer-consumer pattern. (@interwq)
|
|
|
|
|
- Add Cirrus-CI config for FreeBSD builds. (@jasone)
|
|
|
|
|
- Add size-matching sanity checks on tcache flush. (@davidtgoldblatt,
|
|
|
|
|
@interwq)
|
|
|
|
|
|
|
|
|
|
Incompatible changes:
|
|
|
|
|
- Remove --with-lg-page-sizes. (@davidtgoldblatt)
|
|
|
|
|
|
|
|
|
|
Documentation:
|
|
|
|
|
- Attempt to build docs by default, however skip doc building when xsltproc
|
|
|
|
|
is missing. (@interwq, @cmuellner)
|
|
|
|
|
|
|
|
|
|
* 5.1.0 (May 4, 2018)
|
|
|
|
|
|
|
|
|
|
This release is primarily about fine-tuning, ranging from several new features
|
|
|
|
|
to numerous notable performance and portability enhancements. The release and
|
|
|
|
|
prior dev versions have been running in multiple large scale applications for
|
|
|
|
|
months, and the cumulative improvements are substantial in many cases.
|
|
|
|
|
|
|
|
|
|
Given the long and successful production runs, this release is likely a good
|
|
|
|
|
candidate for applications to upgrade, from both jemalloc 5.0 and before. For
|
|
|
|
|
performance-critical applications, the newly added TUNING.md provides
|
|
|
|
|
guidelines on jemalloc tuning.
|
|
|
|
|
|
|
|
|
|
New features:
|
|
|
|
|
- Implement transparent huge page support for internal metadata. (@interwq)
|
|
|
|
|
- Add opt.thp to allow enabling / disabling transparent huge pages for all
|
|
|
|
|
mappings. (@interwq)
|
|
|
|
|
- Add maximum background thread count option. (@djwatson)
|
|
|
|
|
- Allow prof_active to control opt.lg_prof_interval and prof.gdump.
|
|
|
|
|
(@interwq)
|
|
|
|
|
- Allow arena index lookup based on allocation addresses via mallctl.
|
|
|
|
|
(@lionkov)
|
|
|
|
|
- Allow disabling initial-exec TLS model. (@davidtgoldblatt, @KenMacD)
|
|
|
|
|
- Add opt.lg_extent_max_active_fit to set the max ratio between the size of
|
|
|
|
|
the active extent selected (to split off from) and the size of the requested
|
|
|
|
|
allocation. (@interwq, @davidtgoldblatt)
|
|
|
|
|
- Add retain_grow_limit to set the max size when growing virtual address
|
|
|
|
|
space. (@interwq)
|
|
|
|
|
- Add mallctl interfaces:
|
|
|
|
|
+ arena.<i>.retain_grow_limit (@interwq)
|
|
|
|
|
+ arenas.lookup (@lionkov)
|
|
|
|
|
+ max_background_threads (@djwatson)
|
|
|
|
|
+ opt.lg_extent_max_active_fit (@interwq)
|
|
|
|
|
+ opt.max_background_threads (@djwatson)
|
|
|
|
|
+ opt.metadata_thp (@interwq)
|
|
|
|
|
+ opt.thp (@interwq)
|
|
|
|
|
+ stats.metadata_thp (@interwq)
|
|
|
|
|
|
|
|
|
|
Portability improvements:
|
|
|
|
|
- Support GNU/kFreeBSD configuration. (@paravoid)
|
|
|
|
|
- Support m68k, nios2 and SH3 architectures. (@paravoid)
|
|
|
|
|
- Fall back to FD_CLOEXEC when O_CLOEXEC is unavailable. (@zonyitoo)
|
|
|
|
|
- Fix symbol listing for cross-compiling. (@tamird)
|
|
|
|
|
- Fix high bits computation on ARM. (@davidtgoldblatt, @paravoid)
|
|
|
|
|
- Disable the CPU_SPINWAIT macro for Power. (@davidtgoldblatt, @marxin)
|
|
|
|
|
- Fix MSVC 2015 & 2017 builds. (@rustyx)
|
|
|
|
|
- Improve RISC-V support. (@EdSchouten)
|
|
|
|
|
- Set name mangling script in strict mode. (@nicolov)
|
|
|
|
|
- Avoid MADV_HUGEPAGE on ARM. (@marxin)
|
|
|
|
|
- Modify configure to determine return value of strerror_r.
|
|
|
|
|
(@davidtgoldblatt, @cferris1000)
|
|
|
|
|
- Make sure CXXFLAGS is tested with CPP compiler. (@nehaljwani)
|
|
|
|
|
- Fix 32-bit build on MSVC. (@rustyx)
|
|
|
|
|
- Fix external symbol on MSVC. (@maksqwe)
|
|
|
|
|
- Avoid a printf format specifier warning. (@jasone)
|
|
|
|
|
- Add configure option --disable-initial-exec-tls which can allow jemalloc to
|
|
|
|
|
be dynamically loaded after program startup. (@davidtgoldblatt, @KenMacD)
|
|
|
|
|
- AArch64: Add ILP32 support. (@cmuellner)
|
|
|
|
|
- Add --with-lg-vaddr configure option to support cross compiling.
|
|
|
|
|
(@cmuellner, @davidtgoldblatt)
|
|
|
|
|
|
|
|
|
|
Optimizations and refactors:
|
|
|
|
|
- Improve active extent fit with extent_max_active_fit. This considerably
|
|
|
|
|
reduces fragmentation over time and improves virtual memory and metadata
|
|
|
|
|
usage. (@davidtgoldblatt, @interwq)
|
|
|
|
|
- Eagerly coalesce large extents to reduce fragmentation. (@interwq)
|
|
|
|
|
- sdallocx: only read size info when page aligned (i.e. possibly sampled),
|
|
|
|
|
which speeds up the sized deallocation path significantly. (@interwq)
|
|
|
|
|
- Avoid attempting new mappings for in place expansion with retain, since
|
|
|
|
|
it rarely succeeds in practice and causes high overhead. (@interwq)
|
|
|
|
|
- Refactor OOM handling in newImpl. (@wqfish)
|
|
|
|
|
- Add internal fine-grained logging functionality for debugging use.
|
|
|
|
|
(@davidtgoldblatt)
|
|
|
|
|
- Refactor arena / tcache interactions. (@davidtgoldblatt)
|
|
|
|
|
- Refactor extent management with dumpable flag. (@davidtgoldblatt)
|
|
|
|
|
- Add runtime detection of lazy purging. (@interwq)
|
|
|
|
|
- Use pairing heap instead of red-black tree for extents_avail. (@djwatson)
|
|
|
|
|
- Use sysctl on startup in FreeBSD. (@trasz)
|
|
|
|
|
- Use thread local prng state instead of atomic. (@djwatson)
|
|
|
|
|
- Make decay to always purge one more extent than before, because in
|
|
|
|
|
practice large extents are usually the ones that cross the decay threshold.
|
|
|
|
|
Purging the additional extent helps save memory as well as reduce VM
|
|
|
|
|
fragmentation. (@interwq)
|
|
|
|
|
- Fast division by dynamic values. (@davidtgoldblatt)
|
|
|
|
|
- Improve the fit for aligned allocation. (@interwq, @edwinsmith)
|
|
|
|
|
- Refactor extent_t bitpacking. (@rkmisra)
|
|
|
|
|
- Optimize the generated assembly for ticker operations. (@davidtgoldblatt)
|
|
|
|
|
- Convert stats printing to use a structured text emitter. (@davidtgoldblatt)
|
|
|
|
|
- Remove preserve_lru feature for extents management. (@djwatson)
|
|
|
|
|
- Consolidate two memory loads into one on the fast deallocation path.
|
|
|
|
|
(@davidtgoldblatt, @interwq)
|
|
|
|
|
|
|
|
|
|
Bug fixes (most of the issues are only relevant to jemalloc 5.0):
|
|
|
|
|
- Fix deadlock with multithreaded fork in OS X. (@davidtgoldblatt)
|
|
|
|
|
- Validate returned file descriptor before use. (@zonyitoo)
|
|
|
|
|
- Fix a few background thread initialization and shutdown issues. (@interwq)
|
|
|
|
|
- Fix an extent coalesce + decay race by taking both coalescing extents off
|
|
|
|
|
the LRU list. (@interwq)
|
|
|
|
|
- Fix potentially unbound increase during decay, caused by one thread keep
|
|
|
|
|
stashing memory to purge while other threads generating new pages. The
|
|
|
|
|
number of pages to purge is checked to prevent this. (@interwq)
|
|
|
|
|
- Fix a FreeBSD bootstrap assertion. (@strejda, @interwq)
|
|
|
|
|
- Handle 32 bit mutex counters. (@rkmisra)
|
|
|
|
|
- Fix a indexing bug when creating background threads. (@davidtgoldblatt,
|
|
|
|
|
@binliu19)
|
|
|
|
|
- Fix arguments passed to extent_init. (@yuleniwo, @interwq)
|
|
|
|
|
- Fix addresses used for ordering mutexes. (@rkmisra)
|
|
|
|
|
- Fix abort_conf processing during bootstrap. (@interwq)
|
|
|
|
|
- Fix include path order for out-of-tree builds. (@cmuellner)
|
|
|
|
|
|
|
|
|
|
Incompatible changes:
|
|
|
|
|
- Remove --disable-thp. (@interwq)
|
|
|
|
|
- Remove mallctl interfaces:
|
|
|
|
|
+ config.thp (@interwq)
|
|
|
|
|
|
|
|
|
|
Documentation:
|
|
|
|
|
- Add TUNING.md. (@interwq, @davidtgoldblatt, @djwatson)
|
|
|
|
|
|
|
|
|
|
* 5.0.1 (July 1, 2017)
|
|
|
|
|
|
|
|
|
|
This bugfix release fixes several issues, most of which are obscure enough
|
|
|
|
|
that typical applications are not impacted.
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Update decay->nunpurged before purging, in order to avoid potential update
|
|
|
|
|
races and subsequent incorrect purging volume. (@interwq)
|
|
|
|
|
- Only abort on dlsym(3) error if the failure impacts an enabled feature (lazy
|
|
|
|
|
locking and/or background threads). This mitigates an initialization
|
|
|
|
|
failure bug for which we still do not have a clear reproduction test case.
|
|
|
|
|
(@interwq)
|
|
|
|
|
- Modify tsd management so that it neither crashes nor leaks if a thread's
|
|
|
|
|
only allocation activity is to call free() after TLS destructors have been
|
|
|
|
|
executed. This behavior was observed when operating with GNU libc, and is
|
|
|
|
|
unlikely to be an issue with other libc implementations. (@interwq)
|
|
|
|
|
- Mask signals during background thread creation. This prevents signals from
|
|
|
|
|
being inadvertently delivered to background threads. (@jasone,
|
|
|
|
|
@davidtgoldblatt, @interwq)
|
|
|
|
|
- Avoid inactivity checks within background threads, in order to prevent
|
|
|
|
|
recursive mutex acquisition. (@interwq)
|
|
|
|
|
- Fix extent_grow_retained() to use the specified hooks when the
|
|
|
|
|
arena.<i>.extent_hooks mallctl is used to override the default hooks.
|
|
|
|
|
(@interwq)
|
|
|
|
|
- Add missing reentrancy support for custom extent hooks which allocate.
|
|
|
|
|
(@interwq)
|
|
|
|
|
- Post-fork(2), re-initialize the list of tcaches associated with each arena
|
|
|
|
|
to contain no tcaches except the forking thread's. (@interwq)
|
|
|
|
|
- Add missing post-fork(2) mutex reinitialization for extent_grow_mtx. This
|
|
|
|
|
fixes potential deadlocks after fork(2). (@interwq)
|
|
|
|
|
- Enforce minimum autoconf version (currently 2.68), since 2.63 is known to
|
|
|
|
|
generate corrupt configure scripts. (@jasone)
|
|
|
|
|
- Ensure that the configured page size (--with-lg-page) is no larger than the
|
|
|
|
|
configured huge page size (--with-lg-hugepage). (@jasone)
|
|
|
|
|
|
|
|
|
|
* 5.0.0 (June 13, 2017)
|
|
|
|
|
|
|
|
|
|
Unlike all previous jemalloc releases, this release does not use naturally
|
|
|
|
|
aligned "chunks" for virtual memory management, and instead uses page-aligned
|
|
|
|
|
"extents". This change has few externally visible effects, but the internal
|
|
|
|
|
impacts are... extensive. Many other internal changes combine to make this
|
|
|
|
|
the most cohesively designed version of jemalloc so far, with ample
|
|
|
|
|
opportunity for further enhancements.
|
|
|
|
|
|
|
|
|
|
Continuous integration is now an integral aspect of development thanks to the
|
|
|
|
|
efforts of @davidtgoldblatt, and the dev branch tends to remain reasonably
|
|
|
|
|
stable on the tested platforms (Linux, FreeBSD, macOS, and Windows). As a
|
|
|
|
|
side effect the official release frequency may decrease over time.
|
|
|
|
|
|
|
|
|
|
New features:
|
|
|
|
|
- Implement optional per-CPU arena support; threads choose which arena to use
|
|
|
|
|
based on current CPU rather than on fixed thread-->arena associations.
|
|
|
|
|
(@interwq)
|
|
|
|
|
- Implement two-phase decay of unused dirty pages. Pages transition from
|
|
|
|
|
dirty-->muzzy-->clean, where the first phase transition relies on
|
|
|
|
|
madvise(... MADV_FREE) semantics, and the second phase transition discards
|
|
|
|
|
pages such that they are replaced with demand-zeroed pages on next access.
|
|
|
|
|
(@jasone)
|
|
|
|
|
- Increase decay time resolution from seconds to milliseconds. (@jasone)
|
|
|
|
|
- Implement opt-in per CPU background threads, and use them for asynchronous
|
|
|
|
|
decay-driven unused dirty page purging. (@interwq)
|
|
|
|
|
- Add mutex profiling, which collects a variety of statistics useful for
|
|
|
|
|
diagnosing overhead/contention issues. (@interwq)
|
|
|
|
|
- Add C++ new/delete operator bindings. (@djwatson)
|
|
|
|
|
- Support manually created arena destruction, such that all data and metadata
|
|
|
|
|
are discarded. Add MALLCTL_ARENAS_DESTROYED for accessing merged stats
|
|
|
|
|
associated with destroyed arenas. (@jasone)
|
|
|
|
|
- Add MALLCTL_ARENAS_ALL as a fixed index for use in accessing
|
|
|
|
|
merged/destroyed arena statistics via mallctl. (@jasone)
|
|
|
|
|
- Add opt.abort_conf to optionally abort if invalid configuration options are
|
|
|
|
|
detected during initialization. (@interwq)
|
|
|
|
|
- Add opt.stats_print_opts, so that e.g. JSON output can be selected for the
|
|
|
|
|
stats dumped during exit if opt.stats_print is true. (@jasone)
|
|
|
|
|
- Add --with-version=VERSION for use when embedding jemalloc into another
|
|
|
|
|
project's git repository. (@jasone)
|
|
|
|
|
- Add --disable-thp to support cross compiling. (@jasone)
|
|
|
|
|
- Add --with-lg-hugepage to support cross compiling. (@jasone)
|
|
|
|
|
- Add mallctl interfaces (various authors):
|
|
|
|
|
+ background_thread
|
|
|
|
|
+ opt.abort_conf
|
|
|
|
|
+ opt.retain
|
|
|
|
|
+ opt.percpu_arena
|
|
|
|
|
+ opt.background_thread
|
|
|
|
|
+ opt.{dirty,muzzy}_decay_ms
|
|
|
|
|
+ opt.stats_print_opts
|
|
|
|
|
+ arena.<i>.initialized
|
|
|
|
|
+ arena.<i>.destroy
|
|
|
|
|
+ arena.<i>.{dirty,muzzy}_decay_ms
|
|
|
|
|
+ arena.<i>.extent_hooks
|
|
|
|
|
+ arenas.{dirty,muzzy}_decay_ms
|
|
|
|
|
+ arenas.bin.<i>.slab_size
|
|
|
|
|
+ arenas.nlextents
|
|
|
|
|
+ arenas.lextent.<i>.size
|
|
|
|
|
+ arenas.create
|
|
|
|
|
+ stats.background_thread.{num_threads,num_runs,run_interval}
|
|
|
|
|
+ stats.mutexes.{ctl,background_thread,prof,reset}.
|
|
|
|
|
{num_ops,num_spin_acq,num_wait,max_wait_time,total_wait_time,max_num_thds,
|
|
|
|
|
num_owner_switch}
|
|
|
|
|
+ stats.arenas.<i>.{dirty,muzzy}_decay_ms
|
|
|
|
|
+ stats.arenas.<i>.uptime
|
|
|
|
|
+ stats.arenas.<i>.{pmuzzy,base,internal,resident}
|
|
|
|
|
+ stats.arenas.<i>.{dirty,muzzy}_{npurge,nmadvise,purged}
|
|
|
|
|
+ stats.arenas.<i>.bins.<j>.{nslabs,reslabs,curslabs}
|
|
|
|
|
+ stats.arenas.<i>.bins.<j>.mutex.
|
|
|
|
|
{num_ops,num_spin_acq,num_wait,max_wait_time,total_wait_time,max_num_thds,
|
|
|
|
|
num_owner_switch}
|
|
|
|
|
+ stats.arenas.<i>.lextents.<j>.{nmalloc,ndalloc,nrequests,curlextents}
|
|
|
|
|
+ stats.arenas.i.mutexes.{large,extent_avail,extents_dirty,extents_muzzy,
|
|
|
|
|
extents_retained,decay_dirty,decay_muzzy,base,tcache_list}.
|
|
|
|
|
{num_ops,num_spin_acq,num_wait,max_wait_time,total_wait_time,max_num_thds,
|
|
|
|
|
num_owner_switch}
|
|
|
|
|
|
|
|
|
|
Portability improvements:
|
|
|
|
|
- Improve reentrant allocation support, such that deadlock is less likely if
|
|
|
|
|
e.g. a system library call in turn allocates memory. (@davidtgoldblatt,
|
|
|
|
|
@interwq)
|
|
|
|
|
- Support static linking of jemalloc with glibc. (@djwatson)
|
|
|
|
|
|
|
|
|
|
Optimizations and refactors:
|
|
|
|
|
- Organize virtual memory as "extents" of virtual memory pages, rather than as
|
|
|
|
|
naturally aligned "chunks", and store all metadata in arbitrarily distant
|
|
|
|
|
locations. This reduces virtual memory external fragmentation, and will
|
|
|
|
|
interact better with huge pages (not yet explicitly supported). (@jasone)
|
|
|
|
|
- Fold large and huge size classes together; only small and large size classes
|
|
|
|
|
remain. (@jasone)
|
|
|
|
|
- Unify the allocation paths, and merge most fast-path branching decisions.
|
|
|
|
|
(@davidtgoldblatt, @interwq)
|
|
|
|
|
- Embed per thread automatic tcache into thread-specific data, which reduces
|
|
|
|
|
conditional branches and dereferences. Also reorganize tcache to increase
|
|
|
|
|
fast-path data locality. (@interwq)
|
|
|
|
|
- Rewrite atomics to closely model the C11 API, convert various
|
|
|
|
|
synchronization from mutex-based to atomic, and use the explicit memory
|
|
|
|
|
ordering control to resolve various hypothetical races without increasing
|
|
|
|
|
synchronization overhead. (@davidtgoldblatt)
|
|
|
|
|
- Extensively optimize rtree via various methods:
|
|
|
|
|
+ Add multiple layers of rtree lookup caching, since rtree lookups are now
|
|
|
|
|
part of fast-path deallocation. (@interwq)
|
|
|
|
|
+ Determine rtree layout at compile time. (@jasone)
|
|
|
|
|
+ Make the tree shallower for common configurations. (@jasone)
|
|
|
|
|
+ Embed the root node in the top-level rtree data structure, thus avoiding
|
|
|
|
|
one level of indirection. (@jasone)
|
|
|
|
|
+ Further specialize leaf elements as compared to internal node elements,
|
|
|
|
|
and directly embed extent metadata needed for fast-path deallocation.
|
|
|
|
|
(@jasone)
|
|
|
|
|
+ Ignore leading always-zero address bits (architecture-specific).
|
|
|
|
|
(@jasone)
|
|
|
|
|
- Reorganize headers (ongoing work) to make them hermetic, and disentangle
|
|
|
|
|
various module dependencies. (@davidtgoldblatt)
|
|
|
|
|
- Convert various internal data structures such as size class metadata from
|
|
|
|
|
boot-time-initialized to compile-time-initialized. Propagate resulting data
|
|
|
|
|
structure simplifications, such as making arena metadata fixed-size.
|
|
|
|
|
(@jasone)
|
|
|
|
|
- Simplify size class lookups when constrained to size classes that are
|
|
|
|
|
multiples of the page size. This speeds lookups, but the primary benefit is
|
|
|
|
|
complexity reduction in code that was the source of numerous regressions.
|
|
|
|
|
(@jasone)
|
|
|
|
|
- Lock individual extents when possible for localized extent operations,
|
|
|
|
|
rather than relying on a top-level arena lock. (@davidtgoldblatt, @jasone)
|
|
|
|
|
- Use first fit layout policy instead of best fit, in order to improve
|
|
|
|
|
packing. (@jasone)
|
|
|
|
|
- If munmap(2) is not in use, use an exponential series to grow each arena's
|
|
|
|
|
virtual memory, so that the number of disjoint virtual memory mappings
|
|
|
|
|
remains low. (@jasone)
|
|
|
|
|
- Implement per arena base allocators, so that arenas never share any virtual
|
|
|
|
|
memory pages. (@jasone)
|
|
|
|
|
- Automatically generate private symbol name mangling macros. (@jasone)
|
|
|
|
|
|
|
|
|
|
Incompatible changes:
|
|
|
|
|
- Replace chunk hooks with an expanded/normalized set of extent hooks.
|
|
|
|
|
(@jasone)
|
|
|
|
|
- Remove ratio-based purging. (@jasone)
|
|
|
|
|
- Remove --disable-tcache. (@jasone)
|
|
|
|
|
- Remove --disable-tls. (@jasone)
|
|
|
|
|
- Remove --enable-ivsalloc. (@jasone)
|
|
|
|
|
- Remove --with-lg-size-class-group. (@jasone)
|
|
|
|
|
- Remove --with-lg-tiny-min. (@jasone)
|
|
|
|
|
- Remove --disable-cc-silence. (@jasone)
|
|
|
|
|
- Remove --enable-code-coverage. (@jasone)
|
|
|
|
|
- Remove --disable-munmap (replaced by opt.retain). (@jasone)
|
|
|
|
|
- Remove Valgrind support. (@jasone)
|
|
|
|
|
- Remove quarantine support. (@jasone)
|
|
|
|
|
- Remove redzone support. (@jasone)
|
|
|
|
|
- Remove mallctl interfaces (various authors):
|
|
|
|
|
+ config.munmap
|
|
|
|
|
+ config.tcache
|
|
|
|
|
+ config.tls
|
|
|
|
|
+ config.valgrind
|
|
|
|
|
+ opt.lg_chunk
|
|
|
|
|
+ opt.purge
|
|
|
|
|
+ opt.lg_dirty_mult
|
|
|
|
|
+ opt.decay_time
|
|
|
|
|
+ opt.quarantine
|
|
|
|
|
+ opt.redzone
|
|
|
|
|
+ opt.thp
|
|
|
|
|
+ arena.<i>.lg_dirty_mult
|
|
|
|
|
+ arena.<i>.decay_time
|
|
|
|
|
+ arena.<i>.chunk_hooks
|
|
|
|
|
+ arenas.initialized
|
|
|
|
|
+ arenas.lg_dirty_mult
|
|
|
|
|
+ arenas.decay_time
|
|
|
|
|
+ arenas.bin.<i>.run_size
|
|
|
|
|
+ arenas.nlruns
|
|
|
|
|
+ arenas.lrun.<i>.size
|
|
|
|
|
+ arenas.nhchunks
|
|
|
|
|
+ arenas.hchunk.<i>.size
|
|
|
|
|
+ arenas.extend
|
|
|
|
|
+ stats.cactive
|
|
|
|
|
+ stats.arenas.<i>.lg_dirty_mult
|
|
|
|
|
+ stats.arenas.<i>.decay_time
|
|
|
|
|
+ stats.arenas.<i>.metadata.{mapped,allocated}
|
|
|
|
|
+ stats.arenas.<i>.{npurge,nmadvise,purged}
|
|
|
|
|
+ stats.arenas.<i>.huge.{allocated,nmalloc,ndalloc,nrequests}
|
|
|
|
|
+ stats.arenas.<i>.bins.<j>.{nruns,reruns,curruns}
|
|
|
|
|
+ stats.arenas.<i>.lruns.<j>.{nmalloc,ndalloc,nrequests,curruns}
|
|
|
|
|
+ stats.arenas.<i>.hchunks.<j>.{nmalloc,ndalloc,nrequests,curhchunks}
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Improve interval-based profile dump triggering to dump only one profile when
|
|
|
|
|
a single allocation's size exceeds the interval. (@jasone)
|
|
|
|
|
- Use prefixed function names (as controlled by --with-jemalloc-prefix) when
|
|
|
|
|
pruning backtrace frames in jeprof. (@jasone)
|
|
|
|
|
|
|
|
|
|
* 4.5.0 (February 28, 2017)
|
|
|
|
|
|
|
|
|
|
This is the first release to benefit from much broader continuous integration
|
|
|
|
|
testing, thanks to @davidtgoldblatt. Had we had this testing infrastructure
|
|
|
|
|
in place for prior releases, it would have caught all of the most serious
|
|
|
|
|
regressions fixed by this release.
|
|
|
|
|
|
|
|
|
|
New features:
|
|
|
|
|
- Add --disable-thp and the opt.thp mallctl to provide opt-out mechanisms for
|
|
|
|
|
transparent huge page integration. (@jasone)
|
|
|
|
|
- Update zone allocator integration to work with macOS 10.12. (@glandium)
|
|
|
|
|
- Restructure *CFLAGS configuration, so that CFLAGS behaves typically, and
|
|
|
|
|
EXTRA_CFLAGS provides a way to specify e.g. -Werror during building, but not
|
|
|
|
|
during configuration. (@jasone, @ronawho)
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Fix DSS (sbrk(2)-based) allocation. This regression was first released in
|
|
|
|
|
4.3.0. (@jasone)
|
|
|
|
|
- Handle race in per size class utilization computation. This functionality
|
|
|
|
|
was first released in 4.0.0. (@interwq)
|
|
|
|
|
- Fix lock order reversal during gdump. (@jasone)
|
|
|
|
|
- Fix/refactor tcache synchronization. This regression was first released in
|
|
|
|
|
4.0.0. (@jasone)
|
|
|
|
|
- Fix various JSON-formatted malloc_stats_print() bugs. This functionality
|
|
|
|
|
was first released in 4.3.0. (@jasone)
|
|
|
|
|
- Fix huge-aligned allocation. This regression was first released in 4.4.0.
|
|
|
|
|
(@jasone)
|
|
|
|
|
- When transparent huge page integration is enabled, detect what state pages
|
|
|
|
|
start in according to the kernel's current operating mode, and only convert
|
|
|
|
|
arena chunks to non-huge during purging if that is not their initial state.
|
|
|
|
|
This functionality was first released in 4.4.0. (@jasone)
|
|
|
|
|
- Fix lg_chunk clamping for the --enable-cache-oblivious --disable-fill case.
|
|
|
|
|
This regression was first released in 4.0.0. (@jasone, @428desmo)
|
|
|
|
|
- Properly detect sparc64 when building for Linux. (@glaubitz)
|
|
|
|
|
|
|
|
|
|
* 4.4.0 (December 3, 2016)
|
|
|
|
|
|
|
|
|
|
New features:
|
|
|
|
|
- Add configure support for *-*-linux-android. (@cferris1000, @jasone)
|
|
|
|
|
- Add the --disable-syscall configure option, for use on systems that place
|
|
|
|
|
security-motivated limitations on syscall(2). (@jasone)
|
|
|
|
|
- Add support for Debian GNU/kFreeBSD. (@thesam)
|
|
|
|
|
|
|
|
|
|
Optimizations:
|
|
|
|
|
- Add extent serial numbers and use them where appropriate as a sort key that
|
|
|
|
|
is higher priority than address, so that the allocation policy prefers older
|
|
|
|
|
extents. This tends to improve locality (decrease fragmentation) when
|
|
|
|
|
memory grows downward. (@jasone)
|
|
|
|
|
- Refactor madvise(2) configuration so that MADV_FREE is detected and utilized
|
|
|
|
|
on Linux 4.5 and newer. (@jasone)
|
|
|
|
|
- Mark partially purged arena chunks as non-huge-page. This improves
|
|
|
|
|
interaction with Linux's transparent huge page functionality. (@jasone)
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Fix size class computations for edge conditions involving extremely large
|
|
|
|
|
allocations. This regression was first released in 4.0.0. (@jasone,
|
|
|
|
|
@ingvarha)
|
|
|
|
|
- Remove overly restrictive assertions related to the cactive statistic. This
|
|
|
|
|
regression was first released in 4.1.0. (@jasone)
|
|
|
|
|
- Implement a more reliable detection scheme for os_unfair_lock on macOS.
|
|
|
|
|
(@jszakmeister)
|
|
|
|
|
|
|
|
|
|
* 4.3.1 (November 7, 2016)
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Fix a severe virtual memory leak. This regression was first released in
|
|
|
|
|
4.3.0. (@interwq, @jasone)
|
|
|
|
|
- Refactor atomic and prng APIs to restore support for 32-bit platforms that
|
|
|
|
|
use pre-C11 toolchains, e.g. FreeBSD's mips. (@jasone)
|
|
|
|
|
|
|
|
|
|
* 4.3.0 (November 4, 2016)
|
|
|
|
|
|
|
|
|
|
This is the first release that passes the test suite for multiple Windows
|
|
|
|
|
configurations, thanks in large part to @glandium setting up continuous
|
|
|
|
|
integration via AppVeyor (and Travis CI for Linux and OS X).
|
|
|
|
|
|
|
|
|
|
New features:
|
|
|
|
|
- Add "J" (JSON) support to malloc_stats_print(). (@jasone)
|
|
|
|
|
- Add Cray compiler support. (@ronawho)
|
|
|
|
|
|
|
|
|
|
Optimizations:
|
|
|
|
|
- Add/use adaptive spinning for bootstrapping and radix tree node
|
|
|
|
|
initialization. (@jasone)
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Fix large allocation to search starting in the optimal size class heap,
|
|
|
|
|
which can substantially reduce virtual memory churn and fragmentation. This
|
|
|
|
|
regression was first released in 4.0.0. (@mjp41, @jasone)
|
|
|
|
|
- Fix stats.arenas.<i>.nthreads accounting. (@interwq)
|
|
|
|
|
- Fix and simplify decay-based purging. (@jasone)
|
|
|
|
|
- Make DSS (sbrk(2)-related) operations lockless, which resolves potential
|
|
|
|
|
deadlocks during thread exit. (@jasone)
|
|
|
|
|
- Fix over-sized allocation of radix tree leaf nodes. (@mjp41, @ogaun,
|
|
|
|
|
@jasone)
|
|
|
|
|
- Fix over-sized allocation of arena_t (plus associated stats) data
|
|
|
|
|
structures. (@jasone, @interwq)
|
|
|
|
|
- Fix EXTRA_CFLAGS to not affect configuration. (@jasone)
|
|
|
|
|
- Fix a Valgrind integration bug. (@ronawho)
|
|
|
|
|
- Disallow 0x5a junk filling when running in Valgrind. (@jasone)
|
|
|
|
|
- Fix a file descriptor leak on Linux. This regression was first released in
|
|
|
|
|
4.2.0. (@vsarunas, @jasone)
|
|
|
|
|
- Fix static linking of jemalloc with glibc. (@djwatson)
|
|
|
|
|
- Use syscall(2) rather than {open,read,close}(2) during boot on Linux. This
|
|
|
|
|
works around other libraries' system call wrappers performing reentrant
|
|
|
|
|
allocation. (@kspinka, @Whissi, @jasone)
|
|
|
|
|
- Fix OS X default zone replacement to work with OS X 10.12. (@glandium,
|
|
|
|
|
@jasone)
|
|
|
|
|
- Fix cached memory management to avoid needless commit/decommit operations
|
|
|
|
|
during purging, which resolves permanent virtual memory map fragmentation
|
|
|
|
|
issues on Windows. (@mjp41, @jasone)
|
|
|
|
|
- Fix TSD fetches to avoid (recursive) allocation. This is relevant to
|
|
|
|
|
non-TLS and Windows configurations. (@jasone)
|
|
|
|
|
- Fix malloc_conf overriding to work on Windows. (@jasone)
|
|
|
|
|
- Forcibly disable lazy-lock on Windows (was forcibly *enabled*). (@jasone)
|
|
|
|
|
|
|
|
|
|
* 4.2.1 (June 8, 2016)
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Fix bootstrapping issues for configurations that require allocation during
|
|
|
|
|
tsd initialization (e.g. --disable-tls). (@cferris1000, @jasone)
|
|
|
|
|
- Fix gettimeofday() version of nstime_update(). (@ronawho)
|
|
|
|
|
- Fix Valgrind regressions in calloc() and chunk_alloc_wrapper(). (@ronawho)
|
|
|
|
|
- Fix potential VM map fragmentation regression. (@jasone)
|
|
|
|
|
- Fix opt_zero-triggered in-place huge reallocation zeroing. (@jasone)
|
|
|
|
|
- Fix heap profiling context leaks in reallocation edge cases. (@jasone)
|
|
|
|
|
|
|
|
|
|
* 4.2.0 (May 12, 2016)
|
|
|
|
|
|
|
|
|
|
New features:
|
|
|
|
|
- Add the arena.<i>.reset mallctl, which makes it possible to discard all of
|
|
|
|
|
an arena's allocations in a single operation. (@jasone)
|
|
|
|
|
- Add the stats.retained and stats.arenas.<i>.retained statistics. (@jasone)
|
|
|
|
|
- Add the --with-version configure option. (@jasone)
|
|
|
|
|
- Support --with-lg-page values larger than actual page size. (@jasone)
|
|
|
|
|
|
|
|
|
|
Optimizations:
|
|
|
|
|
- Use pairing heaps rather than red-black trees for various hot data
|
|
|
|
|
structures. (@djwatson, @jasone)
|
|
|
|
|
- Streamline fast paths of rtree operations. (@jasone)
|
|
|
|
|
- Optimize the fast paths of calloc() and [m,d,sd]allocx(). (@jasone)
|
|
|
|
|
- Decommit unused virtual memory if the OS does not overcommit. (@jasone)
|
|
|
|
|
- Specify MAP_NORESERVE on Linux if [heuristic] overcommit is active, in order
|
|
|
|
|
to avoid unfortunate interactions during fork(2). (@jasone)
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Fix chunk accounting related to triggering gdump profiles. (@jasone)
|
|
|
|
|
- Link against librt for clock_gettime(2) if glibc < 2.17. (@jasone)
|
|
|
|
|
- Scale leak report summary according to sampling probability. (@jasone)
|
|
|
|
|
|
|
|
|
|
* 4.1.1 (May 3, 2016)
|
|
|
|
|
|
|
|
|
|
This bugfix release resolves a variety of mostly minor issues, though the
|
|
|
|
|
bitmap fix is critical for 64-bit Windows.
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Fix the linear scan version of bitmap_sfu() to shift by the proper amount
|
|
|
|
|
even when sizeof(long) is not the same as sizeof(void *), as on 64-bit
|
|
|
|
|
Windows. (@jasone)
|
|
|
|
|
- Fix hashing functions to avoid unaligned memory accesses (and resulting
|
|
|
|
|
crashes). This is relevant at least to some ARM-based platforms.
|
|
|
|
|
(@rkmisra)
|
|
|
|
|
- Fix fork()-related lock rank ordering reversals. These reversals were
|
|
|
|
|
unlikely to cause deadlocks in practice except when heap profiling was
|
|
|
|
|
enabled and active. (@jasone)
|
|
|
|
|
- Fix various chunk leaks in OOM code paths. (@jasone)
|
|
|
|
|
- Fix malloc_stats_print() to print opt.narenas correctly. (@jasone)
|
|
|
|
|
- Fix MSVC-specific build/test issues. (@rustyx, @yuslepukhin)
|
|
|
|
|
- Fix a variety of test failures that were due to test fragility rather than
|
|
|
|
|
core bugs. (@jasone)
|
|
|
|
|
|
|
|
|
|
* 4.1.0 (February 28, 2016)
|
|
|
|
|
|
|
|
|
|
This release is primarily about optimizations, but it also incorporates a lot
|
|
|
|
|
of portability-motivated refactoring and enhancements. Many people worked on
|
|
|
|
|
this release, to an extent that even with the omission here of minor changes
|
|
|
|
|
(see git revision history), and of the people who reported and diagnosed
|
|
|
|
|
issues, so much of the work was contributed that starting with this release,
|
|
|
|
|
changes are annotated with author credits to help reflect the collaborative
|
|
|
|
|
effort involved.
|
|
|
|
|
|
|
|
|
|
New features:
|
|
|
|
|
- Implement decay-based unused dirty page purging, a major optimization with
|
|
|
|
|
mallctl API impact. This is an alternative to the existing ratio-based
|
|
|
|
|
unused dirty page purging, and is intended to eventually become the sole
|
|
|
|
|
purging mechanism. New mallctls:
|
|
|
|
|
+ opt.purge
|
|
|
|
|
+ opt.decay_time
|
|
|
|
|
+ arena.<i>.decay
|
|
|
|
|
+ arena.<i>.decay_time
|
|
|
|
|
+ arenas.decay_time
|
|
|
|
|
+ stats.arenas.<i>.decay_time
|
|
|
|
|
(@jasone, @cevans87)
|
|
|
|
|
- Add --with-malloc-conf, which makes it possible to embed a default
|
|
|
|
|
options string during configuration. This was motivated by the desire to
|
|
|
|
|
specify --with-malloc-conf=purge:decay , since the default must remain
|
|
|
|
|
purge:ratio until the 5.0.0 release. (@jasone)
|
|
|
|
|
- Add MS Visual Studio 2015 support. (@rustyx, @yuslepukhin)
|
|
|
|
|
- Make *allocx() size class overflow behavior defined. The maximum
|
|
|
|
|
size class is now less than PTRDIFF_MAX to protect applications against
|
|
|
|
|
numerical overflow, and all allocation functions are guaranteed to indicate
|
|
|
|
|
errors rather than potentially crashing if the request size exceeds the
|
|
|
|
|
maximum size class. (@jasone)
|
|
|
|
|
- jeprof:
|
|
|
|
|
+ Add raw heap profile support. (@jasone)
|
|
|
|
|
+ Add --retain and --exclude for backtrace symbol filtering. (@jasone)
|
|
|
|
|
|
|
|
|
|
Optimizations:
|
|
|
|
|
- Optimize the fast path to combine various bootstrapping and configuration
|
|
|
|
|
checks and execute more streamlined code in the common case. (@interwq)
|
|
|
|
|
- Use linear scan for small bitmaps (used for small object tracking). In
|
|
|
|
|
addition to speeding up bitmap operations on 64-bit systems, this reduces
|
|
|
|
|
allocator metadata overhead by approximately 0.2%. (@djwatson)
|
|
|
|
|
- Separate arena_avail trees, which substantially speeds up run tree
|
|
|
|
|
operations. (@djwatson)
|
|
|
|
|
- Use memoization (boot-time-computed table) for run quantization. Separate
|
|
|
|
|
arena_avail trees reduced the importance of this optimization. (@jasone)
|
|
|
|
|
- Attempt mmap-based in-place huge reallocation. This can dramatically speed
|
|
|
|
|
up incremental huge reallocation. (@jasone)
|
|
|
|
|
|
|
|
|
|
Incompatible changes:
|
|
|
|
|
- Make opt.narenas unsigned rather than size_t. (@jasone)
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Fix stats.cactive accounting regression. (@rustyx, @jasone)
|
|
|
|
|
- Handle unaligned keys in hash(). This caused problems for some ARM systems.
|
|
|
|
|
(@jasone, @cferris1000)
|
|
|
|
|
- Refactor arenas array. In addition to fixing a fork-related deadlock, this
|
|
|
|
|
makes arena lookups faster and simpler. (@jasone)
|
|
|
|
|
- Move retained memory allocation out of the default chunk allocation
|
|
|
|
|
function, to a location that gets executed even if the application installs
|
|
|
|
|
a custom chunk allocation function. This resolves a virtual memory leak.
|
|
|
|
|
(@buchgr)
|
|
|
|
|
- Fix a potential tsd cleanup leak. (@cferris1000, @jasone)
|
|
|
|
|
- Fix run quantization. In practice this bug had no impact unless
|
|
|
|
|
applications requested memory with alignment exceeding one page.
|
|
|
|
|
(@jasone, @djwatson)
|
|
|
|
|
- Fix LinuxThreads-specific bootstrapping deadlock. (Cosmin Paraschiv)
|
|
|
|
|
- jeprof:
|
|
|
|
|
+ Don't discard curl options if timeout is not defined. (@djwatson)
|
|
|
|
|
+ Detect failed profile fetches. (@djwatson)
|
|
|
|
|
- Fix stats.arenas.<i>.{dss,lg_dirty_mult,decay_time,pactive,pdirty} for
|
|
|
|
|
--disable-stats case. (@jasone)
|
|
|
|
|
|
|
|
|
|
* 4.0.4 (October 24, 2015)
|
|
|
|
|
|
|
|
|
|
This bugfix release fixes another xallocx() regression. No other regressions
|
|
|
|
|
have come to light in over a month, so this is likely a good starting point
|
|
|
|
|
for people who prefer to wait for "dot one" releases with all the major issues
|
|
|
|
|
shaken out.
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Fix xallocx(..., MALLOCX_ZERO to zero the last full trailing page of large
|
|
|
|
|
allocations that have been randomly assigned an offset of 0 when
|
|
|
|
|
--enable-cache-oblivious configure option is enabled.
|
|
|
|
|
|
|
|
|
|
* 4.0.3 (September 24, 2015)
|
|
|
|
|
|
|
|
|
|
This bugfix release continues the trend of xallocx() and heap profiling fixes.
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Fix xallocx(..., MALLOCX_ZERO) to zero all trailing bytes of large
|
|
|
|
|
allocations when --enable-cache-oblivious configure option is enabled.
|
|
|
|
|
- Fix xallocx(..., MALLOCX_ZERO) to zero trailing bytes of huge allocations
|
|
|
|
|
when resizing from/to a size class that is not a multiple of the chunk size.
|
|
|
|
|
- Fix prof_tctx_dump_iter() to filter out nodes that were created after heap
|
|
|
|
|
profile dumping started.
|
|
|
|
|
- Work around a potentially bad thread-specific data initialization
|
|
|
|
|
interaction with NPTL (glibc's pthreads implementation).
|
|
|
|
|
|
|
|
|
|
* 4.0.2 (September 21, 2015)
|
|
|
|
|
|
|
|
|
|
This bugfix release addresses a few bugs specific to heap profiling.
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Fix ixallocx_prof_sample() to never modify nor create sampled small
|
|
|
|
|
allocations. xallocx() is in general incapable of moving small allocations,
|
|
|
|
|
so this fix removes buggy code without loss of generality.
|
|
|
|
|
- Fix irallocx_prof_sample() to always allocate large regions, even when
|
|
|
|
|
alignment is non-zero.
|
|
|
|
|
- Fix prof_alloc_rollback() to read tdata from thread-specific data rather
|
|
|
|
|
than dereferencing a potentially invalid tctx.
|
|
|
|
|
|
|
|
|
|
* 4.0.1 (September 15, 2015)
|
|
|
|
|
|
|
|
|
|
This is a bugfix release that is somewhat high risk due to the amount of
|
|
|
|
|
refactoring required to address deep xallocx() problems. As a side effect of
|
|
|
|
|
these fixes, xallocx() now tries harder to partially fulfill requests for
|
|
|
|
|
optional extra space. Note that a couple of minor heap profiling
|
|
|
|
|
optimizations are included, but these are better thought of as performance
|
|
|
|
|
fixes that were integral to discovering most of the other bugs.
|
|
|
|
|
|
|
|
|
|
Optimizations:
|
|
|
|
|
- Avoid a chunk metadata read in arena_prof_tctx_set(), since it is in the
|
|
|
|
|
fast path when heap profiling is enabled. Additionally, split a special
|
|
|
|
|
case out into arena_prof_tctx_reset(), which also avoids chunk metadata
|
|
|
|
|
reads.
|
|
|
|
|
- Optimize irallocx_prof() to optimistically update the sampler state. The
|
|
|
|
|
prior implementation appears to have been a holdover from when
|
|
|
|
|
rallocx()/xallocx() functionality was combined as rallocm().
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Fix TLS configuration such that it is enabled by default for platforms on
|
|
|
|
|
which it works correctly.
|
|
|
|
|
- Fix arenas_cache_cleanup() and arena_get_hard() to handle
|
|
|
|
|
allocation/deallocation within the application's thread-specific data
|
|
|
|
|
cleanup functions even after arenas_cache is torn down.
|
|
|
|
|
- Fix xallocx() bugs related to size+extra exceeding HUGE_MAXCLASS.
|
|
|
|
|
- Fix chunk purge hook calls for in-place huge shrinking reallocation to
|
|
|
|
|
specify the old chunk size rather than the new chunk size. This bug caused
|
|
|
|
|
no correctness issues for the default chunk purge function, but was
|
|
|
|
|
visible to custom functions set via the "arena.<i>.chunk_hooks" mallctl.
|
|
|
|
|
- Fix heap profiling bugs:
|
|
|
|
|
+ Fix heap profiling to distinguish among otherwise identical sample sites
|
|
|
|
|
with interposed resets (triggered via the "prof.reset" mallctl). This bug
|
|
|
|
|
could cause data structure corruption that would most likely result in a
|
|
|
|
|
segfault.
|
|
|
|
|
+ Fix irealloc_prof() to prof_alloc_rollback() on OOM.
|
|
|
|
|
+ Make one call to prof_active_get_unlocked() per allocation event, and use
|
|
|
|
|
the result throughout the relevant functions that handle an allocation
|
|
|
|
|
event. Also add a missing check in prof_realloc(). These fixes protect
|
|
|
|
|
allocation events against concurrent prof_active changes.
|
|
|
|
|
+ Fix ixallocx_prof() to pass usize_max and zero to ixallocx_prof_sample()
|
|
|
|
|
in the correct order.
|
|
|
|
|
+ Fix prof_realloc() to call prof_free_sampled_object() after calling
|
|
|
|
|
prof_malloc_sample_object(). Prior to this fix, if tctx and old_tctx were
|
|
|
|
|
the same, the tctx could have been prematurely destroyed.
|
|
|
|
|
- Fix portability bugs:
|
|
|
|
|
+ Don't bitshift by negative amounts when encoding/decoding run sizes in
|
|
|
|
|
chunk header maps. This affected systems with page sizes greater than 8
|
|
|
|
|
KiB.
|
|
|
|
|
+ Rename index_t to szind_t to avoid an existing type on Solaris.
|
|
|
|
|
+ Add JEMALLOC_CXX_THROW to the memalign() function prototype, in order to
|
|
|
|
|
match glibc and avoid compilation errors when including both
|
|
|
|
|
jemalloc/jemalloc.h and malloc.h in C++ code.
|
|
|
|
|
+ Don't assume that /bin/sh is appropriate when running size_classes.sh
|
|
|
|
|
during configuration.
|
|
|
|
|
+ Consider __sparcv9 a synonym for __sparc64__ when defining LG_QUANTUM.
|
|
|
|
|
+ Link tests to librt if it contains clock_gettime(2).
|
|
|
|
|
|
|
|
|
|
* 4.0.0 (August 17, 2015)
|
|
|
|
|
|
|
|
|
|
This version contains many speed and space optimizations, both minor and
|
|
|
|
|
major. The major themes are generalization, unification, and simplification.
|
|
|
|
|
Although many of these optimizations cause no visible behavior change, their
|
|
|
|
|
cumulative effect is substantial.
|
|
|
|
|
|
|
|
|
|
New features:
|
|
|
|
|
- Normalize size class spacing to be consistent across the complete size
|
|
|
|
|
range. By default there are four size classes per size doubling, but this
|
|
|
|
|
is now configurable via the --with-lg-size-class-group option. Also add the
|
|
|
|
|
--with-lg-page, --with-lg-page-sizes, --with-lg-quantum, and
|
|
|
|
|
--with-lg-tiny-min options, which can be used to tweak page and size class
|
|
|
|
|
settings. Impacts:
|
|
|
|
|
+ Worst case performance for incrementally growing/shrinking reallocation
|
|
|
|
|
is improved because there are far fewer size classes, and therefore
|
|
|
|
|
copying happens less often.
|
|
|
|
|
+ Internal fragmentation is limited to 20% for all but the smallest size
|
|
|
|
|
classes (those less than four times the quantum). (1B + 4 KiB)
|
|
|
|
|
and (1B + 4 MiB) previously suffered nearly 50% internal fragmentation.
|
|
|
|
|
+ Chunk fragmentation tends to be lower because there are fewer distinct run
|
|
|
|
|
sizes to pack.
|
|
|
|
|
- Add support for explicit tcaches. The "tcache.create", "tcache.flush", and
|
|
|
|
|
"tcache.destroy" mallctls control tcache lifetime and flushing, and the
|
|
|
|
|
MALLOCX_TCACHE(tc) and MALLOCX_TCACHE_NONE flags to the *allocx() API
|
|
|
|
|
control which tcache is used for each operation.
|
|
|
|
|
- Implement per thread heap profiling, as well as the ability to
|
|
|
|
|
enable/disable heap profiling on a per thread basis. Add the "prof.reset",
|
|
|
|
|
"prof.lg_sample", "thread.prof.name", "thread.prof.active",
|
|
|
|
|
"opt.prof_thread_active_init", "prof.thread_active_init", and
|
|
|
|
|
"thread.prof.active" mallctls.
|
|
|
|
|
- Add support for per arena application-specified chunk allocators, configured
|
|
|
|
|
via the "arena.<i>.chunk_hooks" mallctl.
|
|
|
|
|
- Refactor huge allocation to be managed by arenas, so that arenas now
|
|
|
|
|
function as general purpose independent allocators. This is important in
|
|
|
|
|
the context of user-specified chunk allocators, aside from the scalability
|
|
|
|
|
benefits. Related new statistics:
|
|
|
|
|
+ The "stats.arenas.<i>.huge.allocated", "stats.arenas.<i>.huge.nmalloc",
|
|
|
|
|
"stats.arenas.<i>.huge.ndalloc", and "stats.arenas.<i>.huge.nrequests"
|
|
|
|
|
mallctls provide high level per arena huge allocation statistics.
|
|
|
|
|
+ The "arenas.nhchunks", "arenas.hchunk.<i>.size",
|
|
|
|
|
"stats.arenas.<i>.hchunks.<j>.nmalloc",
|
|
|
|
|
"stats.arenas.<i>.hchunks.<j>.ndalloc",
|
|
|
|
|
"stats.arenas.<i>.hchunks.<j>.nrequests", and
|
|
|
|
|
"stats.arenas.<i>.hchunks.<j>.curhchunks" mallctls provide per size class
|
|
|
|
|
statistics.
|
|
|
|
|
- Add the 'util' column to malloc_stats_print() output, which reports the
|
|
|
|
|
proportion of available regions that are currently in use for each small
|
|
|
|
|
size class.
|
|
|
|
|
- Add "alloc" and "free" modes for for junk filling (see the "opt.junk"
|
|
|
|
|
mallctl), so that it is possible to separately enable junk filling for
|
|
|
|
|
allocation versus deallocation.
|
|
|
|
|
- Add the jemalloc-config script, which provides information about how
|
|
|
|
|
jemalloc was configured, and how to integrate it into application builds.
|
|
|
|
|
- Add metadata statistics, which are accessible via the "stats.metadata",
|
|
|
|
|
"stats.arenas.<i>.metadata.mapped", and
|
|
|
|
|
"stats.arenas.<i>.metadata.allocated" mallctls.
|
|
|
|
|
- Add the "stats.resident" mallctl, which reports the upper limit of
|
|
|
|
|
physically resident memory mapped by the allocator.
|
|
|
|
|
- Add per arena control over unused dirty page purging, via the
|
|
|
|
|
"arenas.lg_dirty_mult", "arena.<i>.lg_dirty_mult", and
|
|
|
|
|
"stats.arenas.<i>.lg_dirty_mult" mallctls.
|
|
|
|
|
- Add the "prof.gdump" mallctl, which makes it possible to toggle the gdump
|
|
|
|
|
feature on/off during program execution.
|
|
|
|
|
- Add sdallocx(), which implements sized deallocation. The primary
|
|
|
|
|
optimization over dallocx() is the removal of a metadata read, which often
|
|
|
|
|
suffers an L1 cache miss.
|
|
|
|
|
- Add missing header includes in jemalloc/jemalloc.h, so that applications
|
|
|
|
|
only have to #include <jemalloc/jemalloc.h>.
|
|
|
|
|
- Add support for additional platforms:
|
|
|
|
|
+ Bitrig
|
|
|
|
|
+ Cygwin
|
|
|
|
|
+ DragonFlyBSD
|
|
|
|
|
+ iOS
|
|
|
|
|
+ OpenBSD
|
|
|
|
|
+ OpenRISC/or1k
|
|
|
|
|
|
|
|
|
|
Optimizations:
|
|
|
|
|
- Maintain dirty runs in per arena LRUs rather than in per arena trees of
|
|
|
|
|
dirty-run-containing chunks. In practice this change significantly reduces
|
|
|
|
|
dirty page purging volume.
|
|
|
|
|
- Integrate whole chunks into the unused dirty page purging machinery. This
|
|
|
|
|
reduces the cost of repeated huge allocation/deallocation, because it
|
|
|
|
|
effectively introduces a cache of chunks.
|
|
|
|
|
- Split the arena chunk map into two separate arrays, in order to increase
|
|
|
|
|
cache locality for the frequently accessed bits.
|
|
|
|
|
- Move small run metadata out of runs, into arena chunk headers. This reduces
|
|
|
|
|
run fragmentation, smaller runs reduce external fragmentation for small size
|
|
|
|
|
classes, and packed (less uniformly aligned) metadata layout improves CPU
|
|
|
|
|
cache set distribution.
|
|
|
|
|
- Randomly distribute large allocation base pointer alignment relative to page
|
|
|
|
|
boundaries in order to more uniformly utilize CPU cache sets. This can be
|
|
|
|
|
disabled via the --disable-cache-oblivious configure option, and queried via
|
|
|
|
|
the "config.cache_oblivious" mallctl.
|
|
|
|
|
- Micro-optimize the fast paths for the public API functions.
|
|
|
|
|
- Refactor thread-specific data to reside in a single structure. This assures
|
|
|
|
|
that only a single TLS read is necessary per call into the public API.
|
|
|
|
|
- Implement in-place huge allocation growing and shrinking.
|
|
|
|
|
- Refactor rtree (radix tree for chunk lookups) to be lock-free, and make
|
|
|
|
|
additional optimizations that reduce maximum lookup depth to one or two
|
|
|
|
|
levels. This resolves what was a concurrency bottleneck for per arena huge
|
|
|
|
|
allocation, because a global data structure is critical for determining
|
|
|
|
|
which arenas own which huge allocations.
|
|
|
|
|
|
|
|
|
|
Incompatible changes:
|
|
|
|
|
- Replace --enable-cc-silence with --disable-cc-silence to suppress spurious
|
|
|
|
|
warnings by default.
|
|
|
|
|
- Assure that the constness of malloc_usable_size()'s return type matches that
|
|
|
|
|
of the system implementation.
|
|
|
|
|
- Change the heap profile dump format to support per thread heap profiling,
|
|
|
|
|
rename pprof to jeprof, and enhance it with the --thread=<n> option. As a
|
|
|
|
|
result, the bundled jeprof must now be used rather than the upstream
|
|
|
|
|
(gperftools) pprof.
|
|
|
|
|
- Disable "opt.prof_final" by default, in order to avoid atexit(3), which can
|
|
|
|
|
internally deadlock on some platforms.
|
|
|
|
|
- Change the "arenas.nlruns" mallctl type from size_t to unsigned.
|
|
|
|
|
- Replace the "stats.arenas.<i>.bins.<j>.allocated" mallctl with
|
|
|
|
|
"stats.arenas.<i>.bins.<j>.curregs".
|
|
|
|
|
- Ignore MALLOC_CONF in set{uid,gid,cap} binaries.
|
|
|
|
|
- Ignore MALLOCX_ARENA(a) in dallocx(), in favor of using the
|
|
|
|
|
MALLOCX_TCACHE(tc) and MALLOCX_TCACHE_NONE flags to control tcache usage.
|
|
|
|
|
|
|
|
|
|
Removed features:
|
|
|
|
|
- Remove the *allocm() API, which is superseded by the *allocx() API.
|
|
|
|
|
- Remove the --enable-dss options, and make dss non-optional on all platforms
|
|
|
|
|
which support sbrk(2).
|
|
|
|
|
- Remove the "arenas.purge" mallctl, which was obsoleted by the
|
|
|
|
|
"arena.<i>.purge" mallctl in 3.1.0.
|
|
|
|
|
- Remove the unnecessary "opt.valgrind" mallctl; jemalloc automatically
|
|
|
|
|
detects whether it is running inside Valgrind.
|
|
|
|
|
- Remove the "stats.huge.allocated", "stats.huge.nmalloc", and
|
|
|
|
|
"stats.huge.ndalloc" mallctls.
|
|
|
|
|
- Remove the --enable-mremap option.
|
|
|
|
|
- Remove the "stats.chunks.current", "stats.chunks.total", and
|
|
|
|
|
"stats.chunks.high" mallctls.
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Fix the cactive statistic to decrease (rather than increase) when active
|
|
|
|
|
memory decreases. This regression was first released in 3.5.0.
|
|
|
|
|
- Fix OOM handling in memalign() and valloc(). A variant of this bug existed
|
|
|
|
|
in all releases since 2.0.0, which introduced these functions.
|
|
|
|
|
- Fix an OOM-related regression in arena_tcache_fill_small(), which could
|
|
|
|
|
cause cache corruption on OOM. This regression was present in all releases
|
|
|
|
|
from 2.2.0 through 3.6.0.
|
|
|
|
|
- Fix size class overflow handling for malloc(), posix_memalign(), memalign(),
|
|
|
|
|
calloc(), and realloc() when profiling is enabled.
|
|
|
|
|
- Fix the "arena.<i>.dss" mallctl to return an error if "primary" or
|
|
|
|
|
"secondary" precedence is specified, but sbrk(2) is not supported.
|
|
|
|
|
- Fix fallback lg_floor() implementations to handle extremely large inputs.
|
|
|
|
|
- Ensure the default purgeable zone is after the default zone on OS X.
|
|
|
|
|
- Fix latent bugs in atomic_*().
|
|
|
|
|
- Fix the "arena.<i>.dss" mallctl to handle read-only calls.
|
|
|
|
|
- Fix tls_model configuration to enable the initial-exec model when possible.
|
|
|
|
|
- Mark malloc_conf as a weak symbol so that the application can override it.
|
|
|
|
|
- Correctly detect glibc's adaptive pthread mutexes.
|
|
|
|
|
- Fix the --without-export configure option.
|
|
|
|
|
|
|
|
|
|
* 3.6.0 (March 31, 2014)
|
|
|
|
|
|
|
|
|
|
This version contains a critical bug fix for a regression present in 3.5.0 and
|
|
|
|
|
3.5.1.
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Fix a regression in arena_chunk_alloc() that caused crashes during
|
|
|
|
|
small/large allocation if chunk allocation failed. In the absence of this
|
|
|
|
|
bug, chunk allocation failure would result in allocation failure, e.g. NULL
|
|
|
|
|
return from malloc(). This regression was introduced in 3.5.0.
|
|
|
|
|
- Fix backtracing for gcc intrinsics-based backtracing by specifying
|
|
|
|
|
-fno-omit-frame-pointer to gcc. Note that the application (and all the
|
|
|
|
|
libraries it links to) must also be compiled with this option for
|
|
|
|
|
backtracing to be reliable.
|
|
|
|
|
- Use dss allocation precedence for huge allocations as well as small/large
|
|
|
|
|
allocations.
|
|
|
|
|
- Fix test assertion failure message formatting. This bug did not manifest on
|
|
|
|
|
x86_64 systems because of implementation subtleties in va_list.
|
|
|
|
|
- Fix inconsequential test failures for hash and SFMT code.
|
|
|
|
|
|
|
|
|
|
New features:
|
|
|
|
|
- Support heap profiling on FreeBSD. This feature depends on the proc
|
|
|
|
|
filesystem being mounted during heap profile dumping.
|
|
|
|
|
|
|
|
|
|
* 3.5.1 (February 25, 2014)
|
|
|
|
|
|
|
|
|
|
This version primarily addresses minor bugs in test code.
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Configure Solaris/Illumos to use MADV_FREE.
|
|
|
|
|
- Fix junk filling for mremap(2)-based huge reallocation. This is only
|
|
|
|
|
relevant if configuring with the --enable-mremap option specified.
|
|
|
|
|
- Avoid compilation failure if 'restrict' C99 keyword is not supported by the
|
|
|
|
|
compiler.
|
|
|
|
|
- Add a configure test for SSE2 rather than assuming it is usable on i686
|
|
|
|
|
systems. This fixes test compilation errors, especially on 32-bit Linux
|
|
|
|
|
systems.
|
|
|
|
|
- Fix mallctl argument size mismatches (size_t vs. uint64_t) in the stats unit
|
|
|
|
|
test.
|
|
|
|
|
- Fix/remove flawed alignment-related overflow tests.
|
|
|
|
|
- Prevent compiler optimizations that could change backtraces in the
|
|
|
|
|
prof_accum unit test.
|
|
|
|
|
|
|
|
|
|
* 3.5.0 (January 22, 2014)
|
|
|
|
|
|
|
|
|
|
This version focuses on refactoring and automated testing, though it also
|
|
|
|
|
includes some non-trivial heap profiling optimizations not mentioned below.
|
|
|
|
|
|
|
|
|
|
New features:
|
|
|
|
|
- Add the *allocx() API, which is a successor to the experimental *allocm()
|
|
|
|
|
API. The *allocx() functions are slightly simpler to use because they have
|
|
|
|
|
fewer parameters, they directly return the results of primary interest, and
|
|
|
|
|
mallocx()/rallocx() avoid the strict aliasing pitfall that
|
|
|
|
|
allocm()/rallocm() share with posix_memalign(). Note that *allocm() is
|
|
|
|
|
slated for removal in the next non-bugfix release.
|
|
|
|
|
- Add support for LinuxThreads.
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Unless heap profiling is enabled, disable floating point code and don't link
|
|
|
|
|
with libm. This, in combination with e.g. EXTRA_CFLAGS=-mno-sse on x64
|
|
|
|
|
systems, makes it possible to completely disable floating point register
|
|
|
|
|
use. Some versions of glibc neglect to save/restore caller-saved floating
|
|
|
|
|
point registers during dynamic lazy symbol loading, and the symbol loading
|
|
|
|
|
code uses whatever malloc the application happens to have linked/loaded
|
|
|
|
|
with, the result being potential floating point register corruption.
|
|
|
|
|
- Report ENOMEM rather than EINVAL if an OOM occurs during heap profiling
|
|
|
|
|
backtrace creation in imemalign(). This bug impacted posix_memalign() and
|
|
|
|
|
aligned_alloc().
|
|
|
|
|
- Fix a file descriptor leak in a prof_dump_maps() error path.
|
|
|
|
|
- Fix prof_dump() to close the dump file descriptor for all relevant error
|
|
|
|
|
paths.
|
|
|
|
|
- Fix rallocm() to use the arena specified by the ALLOCM_ARENA(s) flag for
|
|
|
|
|
allocation, not just deallocation.
|
|
|
|
|
- Fix a data race for large allocation stats counters.
|
|
|
|
|
- Fix a potential infinite loop during thread exit. This bug occurred on
|
|
|
|
|
Solaris, and could affect other platforms with similar pthreads TSD
|
|
|
|
|
implementations.
|
|
|
|
|
- Don't junk-fill reallocations unless usable size changes. This fixes a
|
|
|
|
|
violation of the *allocx()/*allocm() semantics.
|
|
|
|
|
- Fix growing large reallocation to junk fill new space.
|
|
|
|
|
- Fix huge deallocation to junk fill when munmap is disabled.
|
|
|
|
|
- Change the default private namespace prefix from empty to je_, and change
|
|
|
|
|
--with-private-namespace-prefix so that it prepends an additional prefix
|
|
|
|
|
rather than replacing je_. This reduces the likelihood of applications
|
|
|
|
|
which statically link jemalloc experiencing symbol name collisions.
|
|
|
|
|
- Add missing private namespace mangling (relevant when
|
|
|
|
|
--with-private-namespace is specified).
|
|
|
|
|
- Add and use JEMALLOC_INLINE_C so that static inline functions are marked as
|
|
|
|
|
static even for debug builds.
|
|
|
|
|
- Add a missing mutex unlock in a malloc_init_hard() error path. In practice
|
|
|
|
|
this error path is never executed.
|
|
|
|
|
- Fix numerous bugs in malloc_strotumax() error handling/reporting. These
|
|
|
|
|
bugs had no impact except for malformed inputs.
|
|
|
|
|
- Fix numerous bugs in malloc_snprintf(). These bugs were not exercised by
|
|
|
|
|
existing calls, so they had no impact.
|
|
|
|
|
|
|
|
|
|
* 3.4.1 (October 20, 2013)
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Fix a race in the "arenas.extend" mallctl that could cause memory corruption
|
|
|
|
|
of internal data structures and subsequent crashes.
|
|
|
|
|
- Fix Valgrind integration flaws that caused Valgrind warnings about reads of
|
|
|
|
|
uninitialized memory in:
|
|
|
|
|
+ arena chunk headers
|
|
|
|
|
+ internal zero-initialized data structures (relevant to tcache and prof
|
|
|
|
|
code)
|
|
|
|
|
- Preserve errno during the first allocation. A readlink(2) call during
|
|
|
|
|
initialization fails unless /etc/malloc.conf exists, so errno was typically
|
|
|
|
|
set during the first allocation prior to this fix.
|
|
|
|
|
- Fix compilation warnings reported by gcc 4.8.1.
|
|
|
|
|
|
|
|
|
|
* 3.4.0 (June 2, 2013)
|
|
|
|
|
|
|
|
|
|
This version is essentially a small bugfix release, but the addition of
|
|
|
|
|
aarch64 support requires that the minor version be incremented.
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Fix race-triggered deadlocks in chunk_record(). These deadlocks were
|
|
|
|
|
typically triggered by multiple threads concurrently deallocating huge
|
|
|
|
|
objects.
|
|
|
|
|
|
|
|
|
|
New features:
|
|
|
|
|
- Add support for the aarch64 architecture.
|
|
|
|
|
|
|
|
|
|
* 3.3.1 (March 6, 2013)
|
|
|
|
|
|
|
|
|
|
This version fixes bugs that are typically encountered only when utilizing
|
|
|
|
|
custom run-time options.
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Fix a locking order bug that could cause deadlock during fork if heap
|
|
|
|
|
profiling were enabled.
|
|
|
|
|
- Fix a chunk recycling bug that could cause the allocator to lose track of
|
|
|
|
|
whether a chunk was zeroed. On FreeBSD, NetBSD, and OS X, it could cause
|
|
|
|
|
corruption if allocating via sbrk(2) (unlikely unless running with the
|
|
|
|
|
"dss:primary" option specified). This was completely harmless on Linux
|
|
|
|
|
unless using mlockall(2) (and unlikely even then, unless the
|
|
|
|
|
--disable-munmap configure option or the "dss:primary" option was
|
|
|
|
|
specified). This regression was introduced in 3.1.0 by the
|
|
|
|
|
mlockall(2)/madvise(2) interaction fix.
|
|
|
|
|
- Fix TLS-related memory corruption that could occur during thread exit if the
|
|
|
|
|
thread never allocated memory. Only the quarantine and prof facilities were
|
|
|
|
|
susceptible.
|
|
|
|
|
- Fix two quarantine bugs:
|
|
|
|
|
+ Internal reallocation of the quarantined object array leaked the old
|
|
|
|
|
array.
|
|
|
|
|
+ Reallocation failure for internal reallocation of the quarantined object
|
|
|
|
|
array (very unlikely) resulted in memory corruption.
|
|
|
|
|
- Fix Valgrind integration to annotate all internally allocated memory in a
|
|
|
|
|
way that keeps Valgrind happy about internal data structure access.
|
|
|
|
|
- Fix building for s390 systems.
|
|
|
|
|
|
|
|
|
|
* 3.3.0 (January 23, 2013)
|
|
|
|
|
|
|
|
|
|
This version includes a few minor performance improvements in addition to the
|
|
|
|
|
listed new features and bug fixes.
|
|
|
|
|
|
|
|
|
|
New features:
|
|
|
|
|
- Add clipping support to lg_chunk option processing.
|
|
|
|
|
- Add the --enable-ivsalloc option.
|
|
|
|
|
- Add the --without-export option.
|
|
|
|
|
- Add the --disable-zone-allocator option.
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Fix "arenas.extend" mallctl to output the number of arenas.
|
|
|
|
|
- Fix chunk_recycle() to unconditionally inform Valgrind that returned memory
|
|
|
|
|
is undefined.
|
|
|
|
|
- Fix build break on FreeBSD related to alloca.h.
|
|
|
|
|
|
|
|
|
|
* 3.2.0 (November 9, 2012)
|
|
|
|
|
|
|
|
|
|
In addition to a couple of bug fixes, this version modifies page run
|
|
|
|
|
allocation and dirty page purging algorithms in order to better control
|
|
|
|
|
page-level virtual memory fragmentation.
|
|
|
|
|
|
|
|
|
|
Incompatible changes:
|
|
|
|
|
- Change the "opt.lg_dirty_mult" default from 5 to 3 (32:1 to 8:1).
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Fix dss/mmap allocation precedence code to use recyclable mmap memory only
|
|
|
|
|
after primary dss allocation fails.
|
|
|
|
|
- Fix deadlock in the "arenas.purge" mallctl. This regression was introduced
|
|
|
|
|
in 3.1.0 by the addition of the "arena.<i>.purge" mallctl.
|
|
|
|
|
|
|
|
|
|
* 3.1.0 (October 16, 2012)
|
|
|
|
|
|
|
|
|
|
New features:
|
|
|
|
|
- Auto-detect whether running inside Valgrind, thus removing the need to
|
|
|
|
|
manually specify MALLOC_CONF=valgrind:true.
|
|
|
|
|
- Add the "arenas.extend" mallctl, which allows applications to create
|
|
|
|
|
manually managed arenas.
|
|
|
|
|
- Add the ALLOCM_ARENA() flag for {,r,d}allocm().
|
|
|
|
|
- Add the "opt.dss", "arena.<i>.dss", and "stats.arenas.<i>.dss" mallctls,
|
|
|
|
|
which provide control over dss/mmap precedence.
|
|
|
|
|
- Add the "arena.<i>.purge" mallctl, which obsoletes "arenas.purge".
|
|
|
|
|
- Define LG_QUANTUM for hppa.
|
|
|
|
|
|
|
|
|
|
Incompatible changes:
|
|
|
|
|
- Disable tcache by default if running inside Valgrind, in order to avoid
|
|
|
|
|
making unallocated objects appear reachable to Valgrind.
|
|
|
|
|
- Drop const from malloc_usable_size() argument on Linux.
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Fix heap profiling crash if sampled object is freed via realloc(p, 0).
|
|
|
|
|
- Remove const from __*_hook variable declarations, so that glibc can modify
|
|
|
|
|
them during process forking.
|
|
|
|
|
- Fix mlockall(2)/madvise(2) interaction.
|
|
|
|
|
- Fix fork(2)-related deadlocks.
|
|
|
|
|
- Fix error return value for "thread.tcache.enabled" mallctl.
|
|
|
|
|
|
|
|
|
|
* 3.0.0 (May 11, 2012)
|
|
|
|
|
|
|
|
|
|
Although this version adds some major new features, the primary focus is on
|
|
|
|
|
internal code cleanup that facilitates maintainability and portability, most
|
|
|
|
|
of which is not reflected in the ChangeLog. This is the first release to
|
|
|
|
|
incorporate substantial contributions from numerous other developers, and the
|
|
|
|
|
result is a more broadly useful allocator (see the git revision history for
|
|
|
|
|
contribution details). Note that the license has been unified, thanks to
|
|
|
|
|
Facebook granting a license under the same terms as the other copyright
|
|
|
|
|
holders (see COPYING).
|
|
|
|
|
|
|
|
|
|
New features:
|
|
|
|
|
- Implement Valgrind support, redzones, and quarantine.
|
|
|
|
|
- Add support for additional platforms:
|
|
|
|
|
+ FreeBSD
|
|
|
|
|
+ Mac OS X Lion
|
|
|
|
|
+ MinGW
|
|
|
|
|
+ Windows (no support yet for replacing the system malloc)
|
|
|
|
|
- Add support for additional architectures:
|
|
|
|
|
+ MIPS
|
|
|
|
|
+ SH4
|
|
|
|
|
+ Tilera
|
|
|
|
|
- Add support for cross compiling.
|
|
|
|
|
- Add nallocm(), which rounds a request size up to the nearest size class
|
|
|
|
|
without actually allocating.
|
|
|
|
|
- Implement aligned_alloc() (blame C11).
|
|
|
|
|
- Add the "thread.tcache.enabled" mallctl.
|
|
|
|
|
- Add the "opt.prof_final" mallctl.
|
|
|
|
|
- Update pprof (from gperftools 2.0).
|
|
|
|
|
- Add the --with-mangling option.
|
|
|
|
|
- Add the --disable-experimental option.
|
|
|
|
|
- Add the --disable-munmap option, and make it the default on Linux.
|
|
|
|
|
- Add the --enable-mremap option, which disables use of mremap(2) by default.
|
|
|
|
|
|
|
|
|
|
Incompatible changes:
|
|
|
|
|
- Enable stats by default.
|
|
|
|
|
- Enable fill by default.
|
|
|
|
|
- Disable lazy locking by default.
|
|
|
|
|
- Rename the "tcache.flush" mallctl to "thread.tcache.flush".
|
|
|
|
|
- Rename the "arenas.pagesize" mallctl to "arenas.page".
|
|
|
|
|
- Change the "opt.lg_prof_sample" default from 0 to 19 (1 B to 512 KiB).
|
|
|
|
|
- Change the "opt.prof_accum" default from true to false.
|
|
|
|
|
|
|
|
|
|
Removed features:
|
|
|
|
|
- Remove the swap feature, including the "config.swap", "swap.avail",
|
|
|
|
|
"swap.prezeroed", "swap.nfds", and "swap.fds" mallctls.
|
|
|
|
|
- Remove highruns statistics, including the
|
|
|
|
|
"stats.arenas.<i>.bins.<j>.highruns" and
|
|
|
|
|
"stats.arenas.<i>.lruns.<j>.highruns" mallctls.
|
|
|
|
|
- As part of small size class refactoring, remove the "opt.lg_[qc]space_max",
|
|
|
|
|
"arenas.cacheline", "arenas.subpage", "arenas.[tqcs]space_{min,max}", and
|
|
|
|
|
"arenas.[tqcs]bins" mallctls.
|
|
|
|
|
- Remove the "arenas.chunksize" mallctl.
|
|
|
|
|
- Remove the "opt.lg_prof_tcmax" option.
|
|
|
|
|
- Remove the "opt.lg_prof_bt_max" option.
|
|
|
|
|
- Remove the "opt.lg_tcache_gc_sweep" option.
|
|
|
|
|
- Remove the --disable-tiny option, including the "config.tiny" mallctl.
|
|
|
|
|
- Remove the --enable-dynamic-page-shift configure option.
|
|
|
|
|
- Remove the --enable-sysv configure option.
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Fix a statistics-related bug in the "thread.arena" mallctl that could cause
|
|
|
|
|
invalid statistics and crashes.
|
|
|
|
|
- Work around TLS deallocation via free() on Linux. This bug could cause
|
|
|
|
|
write-after-free memory corruption.
|
|
|
|
|
- Fix a potential deadlock that could occur during interval- and
|
|
|
|
|
growth-triggered heap profile dumps.
|
|
|
|
|
- Fix large calloc() zeroing bugs due to dropping chunk map unzeroed flags.
|
|
|
|
|
- Fix chunk_alloc_dss() to stop claiming memory is zeroed. This bug could
|
|
|
|
|
cause memory corruption and crashes with --enable-dss specified.
|
|
|
|
|
- Fix fork-related bugs that could cause deadlock in children between fork
|
|
|
|
|
and exec.
|
|
|
|
|
- Fix malloc_stats_print() to honor 'b' and 'l' in the opts parameter.
|
|
|
|
|
- Fix realloc(p, 0) to act like free(p).
|
|
|
|
|
- Do not enforce minimum alignment in memalign().
|
|
|
|
|
- Check for NULL pointer in malloc_usable_size().
|
|
|
|
|
- Fix an off-by-one heap profile statistics bug that could be observed in
|
|
|
|
|
interval- and growth-triggered heap profiles.
|
|
|
|
|
- Fix the "epoch" mallctl to update cached stats even if the passed in epoch
|
|
|
|
|
is 0.
|
|
|
|
|
- Fix bin->runcur management to fix a layout policy bug. This bug did not
|
|
|
|
|
affect correctness.
|
|
|
|
|
- Fix a bug in choose_arena_hard() that potentially caused more arenas to be
|
|
|
|
|
initialized than necessary.
|
|
|
|
|
- Add missing "opt.lg_tcache_max" mallctl implementation.
|
|
|
|
|
- Use glibc allocator hooks to make mixed allocator usage less likely.
|
|
|
|
|
- Fix build issues for --disable-tcache.
|
|
|
|
|
- Don't mangle pthread_create() when --with-private-namespace is specified.
|
|
|
|
|
|
|
|
|
|
* 2.2.5 (November 14, 2011)
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Fix huge_ralloc() race when using mremap(2). This is a serious bug that
|
|
|
|
|
could cause memory corruption and/or crashes.
|
|
|
|
|
- Fix huge_ralloc() to maintain chunk statistics.
|
|
|
|
|
- Fix malloc_stats_print(..., "a") output.
|
|
|
|
|
|
|
|
|
|
* 2.2.4 (November 5, 2011)
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Initialize arenas_tsd before using it. This bug existed for 2.2.[0-3], as
|
|
|
|
|
well as for --disable-tls builds in earlier releases.
|
|
|
|
|
- Do not assume a 4 KiB page size in test/rallocm.c.
|
|
|
|
|
|
|
|
|
|
* 2.2.3 (August 31, 2011)
|
|
|
|
|
|
|
|
|
|
This version fixes numerous bugs related to heap profiling.
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Fix a prof-related race condition. This bug could cause memory corruption,
|
|
|
|
|
but only occurred in non-default configurations (prof_accum:false).
|
|
|
|
|
- Fix off-by-one backtracing issues (make sure that prof_alloc_prep() is
|
|
|
|
|
excluded from backtraces).
|
|
|
|
|
- Fix a prof-related bug in realloc() (only triggered by OOM errors).
|
|
|
|
|
- Fix prof-related bugs in allocm() and rallocm().
|
|
|
|
|
- Fix prof_tdata_cleanup() for --disable-tls builds.
|
|
|
|
|
- Fix a relative include path, to fix objdir builds.
|
|
|
|
|
|
|
|
|
|
* 2.2.2 (July 30, 2011)
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Fix a build error for --disable-tcache.
|
|
|
|
|
- Fix assertions in arena_purge() (for real this time).
|
|
|
|
|
- Add the --with-private-namespace option. This is a workaround for symbol
|
|
|
|
|
conflicts that can inadvertently arise when using static libraries.
|
|
|
|
|
|
|
|
|
|
* 2.2.1 (March 30, 2011)
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Implement atomic operations for x86/x64. This fixes compilation failures
|
|
|
|
|
for versions of gcc that are still in wide use.
|
|
|
|
|
- Fix an assertion in arena_purge().
|
|
|
|
|
|
|
|
|
|
* 2.2.0 (March 22, 2011)
|
|
|
|
|
|
|
|
|
|
This version incorporates several improvements to algorithms and data
|
|
|
|
|
structures that tend to reduce fragmentation and increase speed.
|
|
|
|
|
|
|
|
|
|
New features:
|
|
|
|
|
- Add the "stats.cactive" mallctl.
|
|
|
|
|
- Update pprof (from google-perftools 1.7).
|
|
|
|
|
- Improve backtracing-related configuration logic, and add the
|
|
|
|
|
--disable-prof-libgcc option.
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Change default symbol visibility from "internal", to "hidden", which
|
|
|
|
|
decreases the overhead of library-internal function calls.
|
|
|
|
|
- Fix symbol visibility so that it is also set on OS X.
|
|
|
|
|
- Fix a build dependency regression caused by the introduction of the .pic.o
|
|
|
|
|
suffix for PIC object files.
|
|
|
|
|
- Add missing checks for mutex initialization failures.
|
|
|
|
|
- Don't use libgcc-based backtracing except on x64, where it is known to work.
|
|
|
|
|
- Fix deadlocks on OS X that were due to memory allocation in
|
|
|
|
|
pthread_mutex_lock().
|
|
|
|
|
- Heap profiling-specific fixes:
|
|
|
|
|
+ Fix memory corruption due to integer overflow in small region index
|
|
|
|
|
computation, when using a small enough sample interval that profiling
|
|
|
|
|
context pointers are stored in small run headers.
|
|
|
|
|
+ Fix a bootstrap ordering bug that only occurred with TLS disabled.
|
|
|
|
|
+ Fix a rallocm() rsize bug.
|
|
|
|
|
+ Fix error detection bugs for aligned memory allocation.
|
|
|
|
|
|
|
|
|
|
* 2.1.3 (March 14, 2011)
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Fix a cpp logic regression (due to the "thread.{de,}allocatedp" mallctl fix
|
|
|
|
|
for OS X in 2.1.2).
|
|
|
|
|
- Fix a "thread.arena" mallctl bug.
|
|
|
|
|
- Fix a thread cache stats merging bug.
|
|
|
|
|
|
|
|
|
|
* 2.1.2 (March 2, 2011)
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Fix "thread.{de,}allocatedp" mallctl for OS X.
|
|
|
|
|
- Add missing jemalloc.a to build system.
|
|
|
|
|
|
|
|
|
|
* 2.1.1 (January 31, 2011)
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Fix aligned huge reallocation (affected allocm()).
|
|
|
|
|
- Fix the ALLOCM_LG_ALIGN macro definition.
|
|
|
|
|
- Fix a heap dumping deadlock.
|
|
|
|
|
- Fix a "thread.arena" mallctl bug.
|
|
|
|
|
|
|
|
|
|
* 2.1.0 (December 3, 2010)
|
|
|
|
|
|
|
|
|
|
This version incorporates some optimizations that can't quite be considered
|
|
|
|
|
bug fixes.
|
|
|
|
|
|
|
|
|
|
New features:
|
|
|
|
|
- Use Linux's mremap(2) for huge object reallocation when possible.
|
|
|
|
|
- Avoid locking in mallctl*() when possible.
|
|
|
|
|
- Add the "thread.[de]allocatedp" mallctl's.
|
|
|
|
|
- Convert the manual page source from roff to DocBook, and generate both roff
|
|
|
|
|
and HTML manuals.
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Fix a crash due to incorrect bootstrap ordering. This only impacted
|
|
|
|
|
--enable-debug --enable-dss configurations.
|
|
|
|
|
- Fix a minor statistics bug for mallctl("swap.avail", ...).
|
|
|
|
|
|
|
|
|
|
* 2.0.1 (October 29, 2010)
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Fix a race condition in heap profiling that could cause undefined behavior
|
|
|
|
|
if "opt.prof_accum" were disabled.
|
|
|
|
|
- Add missing mutex unlocks for some OOM error paths in the heap profiling
|
|
|
|
|
code.
|
|
|
|
|
- Fix a compilation error for non-C99 builds.
|
|
|
|
|
|
|
|
|
|
* 2.0.0 (October 24, 2010)
|
|
|
|
|
|
|
|
|
|
This version focuses on the experimental *allocm() API, and on improved
|
|
|
|
|
run-time configuration/introspection. Nonetheless, numerous performance
|
|
|
|
|
improvements are also included.
|
|
|
|
|
|
|
|
|
|
New features:
|
|
|
|
|
- Implement the experimental {,r,s,d}allocm() API, which provides a superset
|
|
|
|
|
of the functionality available via malloc(), calloc(), posix_memalign(),
|
|
|
|
|
realloc(), malloc_usable_size(), and free(). These functions can be used to
|
|
|
|
|
allocate/reallocate aligned zeroed memory, ask for optional extra memory
|
|
|
|
|
during reallocation, prevent object movement during reallocation, etc.
|
|
|
|
|
- Replace JEMALLOC_OPTIONS/JEMALLOC_PROF_PREFIX with MALLOC_CONF, which is
|
|
|
|
|
more human-readable, and more flexible. For example:
|
|
|
|
|
JEMALLOC_OPTIONS=AJP
|
|
|
|
|
is now:
|
|
|
|
|
MALLOC_CONF=abort:true,fill:true,stats_print:true
|
|
|
|
|
- Port to Apple OS X. Sponsored by Mozilla.
|
|
|
|
|
- Make it possible for the application to control thread-->arena mappings via
|
|
|
|
|
the "thread.arena" mallctl.
|
|
|
|
|
- Add compile-time support for all TLS-related functionality via pthreads TSD.
|
|
|
|
|
This is mainly of interest for OS X, which does not support TLS, but has a
|
|
|
|
|
TSD implementation with similar performance.
|
|
|
|
|
- Override memalign() and valloc() if they are provided by the system.
|
|
|
|
|
- Add the "arenas.purge" mallctl, which can be used to synchronously purge all
|
|
|
|
|
dirty unused pages.
|
|
|
|
|
- Make cumulative heap profiling data optional, so that it is possible to
|
|
|
|
|
limit the amount of memory consumed by heap profiling data structures.
|
|
|
|
|
- Add per thread allocation counters that can be accessed via the
|
|
|
|
|
"thread.allocated" and "thread.deallocated" mallctls.
|
|
|
|
|
|
|
|
|
|
Incompatible changes:
|
|
|
|
|
- Remove JEMALLOC_OPTIONS and malloc_options (see MALLOC_CONF above).
|
|
|
|
|
- Increase default backtrace depth from 4 to 128 for heap profiling.
|
|
|
|
|
- Disable interval-based profile dumps by default.
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Remove bad assertions in fork handler functions. These assertions could
|
|
|
|
|
cause aborts for some combinations of configure settings.
|
|
|
|
|
- Fix strerror_r() usage to deal with non-standard semantics in GNU libc.
|
|
|
|
|
- Fix leak context reporting. This bug tended to cause the number of contexts
|
|
|
|
|
to be underreported (though the reported number of objects and bytes were
|
|
|
|
|
correct).
|
|
|
|
|
- Fix a realloc() bug for large in-place growing reallocation. This bug could
|
|
|
|
|
cause memory corruption, but it was hard to trigger.
|
|
|
|
|
- Fix an allocation bug for small allocations that could be triggered if
|
|
|
|
|
multiple threads raced to create a new run of backing pages.
|
|
|
|
|
- Enhance the heap profiler to trigger samples based on usable size, rather
|
|
|
|
|
than request size.
|
|
|
|
|
- Fix a heap profiling bug due to sometimes losing track of requested object
|
|
|
|
|
size for sampled objects.
|
|
|
|
|
|
|
|
|
|
* 1.0.3 (August 12, 2010)
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Fix the libunwind-based implementation of stack backtracing (used for heap
|
|
|
|
|
profiling). This bug could cause zero-length backtraces to be reported.
|
|
|
|
|
- Add a missing mutex unlock in library initialization code. If multiple
|
|
|
|
|
threads raced to initialize malloc, some of them could end up permanently
|
|
|
|
|
blocked.
|
|
|
|
|
|
|
|
|
|
* 1.0.2 (May 11, 2010)
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Fix junk filling of large objects, which could cause memory corruption.
|
|
|
|
|
- Add MAP_NORESERVE support for chunk mapping, because otherwise virtual
|
|
|
|
|
memory limits could cause swap file configuration to fail. Contributed by
|
|
|
|
|
Jordan DeLong.
|
|
|
|
|
|
|
|
|
|
* 1.0.1 (April 14, 2010)
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Fix compilation when --enable-fill is specified.
|
|
|
|
|
- Fix threads-related profiling bugs that affected accuracy and caused memory
|
|
|
|
|
to be leaked during thread exit.
|
|
|
|
|
- Fix dirty page purging race conditions that could cause crashes.
|
|
|
|
|
- Fix crash in tcache flushing code during thread destruction.
|
|
|
|
|
|
|
|
|
|
* 1.0.0 (April 11, 2010)
|
|
|
|
|
|
|
|
|
|
This release focuses on speed and run-time introspection. Numerous
|
|
|
|
|
algorithmic improvements make this release substantially faster than its
|
|
|
|
|
predecessors.
|
|
|
|
|
|
|
|
|
|
New features:
|
|
|
|
|
- Implement autoconf-based configuration system.
|
|
|
|
|
- Add mallctl*(), for the purposes of introspection and run-time
|
|
|
|
|
configuration.
|
|
|
|
|
- Make it possible for the application to manually flush a thread's cache, via
|
|
|
|
|
the "tcache.flush" mallctl.
|
|
|
|
|
- Base maximum dirty page count on proportion of active memory.
|
|
|
|
|
- Compute various additional run-time statistics, including per size class
|
|
|
|
|
statistics for large objects.
|
|
|
|
|
- Expose malloc_stats_print(), which can be called repeatedly by the
|
|
|
|
|
application.
|
|
|
|
|
- Simplify the malloc_message() signature to only take one string argument,
|
|
|
|
|
and incorporate an opaque data pointer argument for use by the application
|
|
|
|
|
in combination with malloc_stats_print().
|
|
|
|
|
- Add support for allocation backed by one or more swap files, and allow the
|
|
|
|
|
application to disable over-commit if swap files are in use.
|
|
|
|
|
- Implement allocation profiling and leak checking.
|
|
|
|
|
|
|
|
|
|
Removed features:
|
|
|
|
|
- Remove the dynamic arena rebalancing code, since thread-specific caching
|
|
|
|
|
reduces its utility.
|
|
|
|
|
|
|
|
|
|
Bug fixes:
|
|
|
|
|
- Modify chunk allocation to work when address space layout randomization
|
|
|
|
|
(ASLR) is in use.
|
|
|
|
|
- Fix thread cleanup bugs related to TLS destruction.
|
|
|
|
|
- Handle 0-size allocation requests in posix_memalign().
|
|
|
|
|
- Fix a chunk leak. The leaked chunks were never touched, so this impacted
|
|
|
|
|
virtual memory usage, but not physical memory usage.
|
|
|
|
|
|
|
|
|
|
* linux_2008082[78]a (August 27/28, 2008)
|
|
|
|
|
|
|
|
|
|
These snapshot releases are the simple result of incorporating Linux-specific
|
|
|
|
|
support into the FreeBSD malloc sources.
|
|
|
|
|
|
|
|
|
|
--------------------------------------------------------------------------------
|
|
|
|
|
vim:filetype=text:textwidth=80
|
