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93253c2762
Obtaining the RSS (Resident Set Size) info is slow in Linux and OSX. This slowed down the generation of the INFO 'memory' section. Since the RSS does not require to be a real-time measurement, we now sample it with server.hz frequency (10 times per second by default) and use this value both to show the INFO rss field and to compute the fragmentation ratio. Practically this does not make any difference for memory profiling of Redis but speeds up the INFO call significantly.
86 lines
3.2 KiB
C
86 lines
3.2 KiB
C
/* zmalloc - total amount of allocated memory aware version of malloc()
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*
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* Copyright (c) 2009-2010, Salvatore Sanfilippo <antirez at gmail dot com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of Redis nor the names of its contributors may be used
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* to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __ZMALLOC_H
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#define __ZMALLOC_H
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/* Double expansion needed for stringification of macro values. */
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#define __xstr(s) __str(s)
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#define __str(s) #s
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#if defined(USE_TCMALLOC)
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#define ZMALLOC_LIB ("tcmalloc-" __xstr(TC_VERSION_MAJOR) "." __xstr(TC_VERSION_MINOR))
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#include <google/tcmalloc.h>
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#if (TC_VERSION_MAJOR == 1 && TC_VERSION_MINOR >= 6) || (TC_VERSION_MAJOR > 1)
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#define HAVE_MALLOC_SIZE 1
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#define zmalloc_size(p) tc_malloc_size(p)
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#else
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#error "Newer version of tcmalloc required"
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#endif
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#elif defined(USE_JEMALLOC)
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#define ZMALLOC_LIB ("jemalloc-" __xstr(JEMALLOC_VERSION_MAJOR) "." __xstr(JEMALLOC_VERSION_MINOR) "." __xstr(JEMALLOC_VERSION_BUGFIX))
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#include <jemalloc/jemalloc.h>
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#if (JEMALLOC_VERSION_MAJOR == 2 && JEMALLOC_VERSION_MINOR >= 1) || (JEMALLOC_VERSION_MAJOR > 2)
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#define HAVE_MALLOC_SIZE 1
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#define zmalloc_size(p) je_malloc_usable_size(p)
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#else
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#error "Newer version of jemalloc required"
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#endif
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#elif defined(__APPLE__)
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#include <malloc/malloc.h>
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#define HAVE_MALLOC_SIZE 1
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#define zmalloc_size(p) malloc_size(p)
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#endif
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#ifndef ZMALLOC_LIB
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#define ZMALLOC_LIB "libc"
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#endif
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void *zmalloc(size_t size);
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void *zcalloc(size_t size);
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void *zrealloc(void *ptr, size_t size);
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void zfree(void *ptr);
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char *zstrdup(const char *s);
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size_t zmalloc_used_memory(void);
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void zmalloc_enable_thread_safeness(void);
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void zmalloc_set_oom_handler(void (*oom_handler)(size_t));
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float zmalloc_get_fragmentation_ratio(size_t rss);
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size_t zmalloc_get_rss(void);
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size_t zmalloc_get_private_dirty(void);
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void zlibc_free(void *ptr);
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#ifndef HAVE_MALLOC_SIZE
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size_t zmalloc_size(void *ptr);
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#endif
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#endif /* __ZMALLOC_H */
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