53 Commits

Author	SHA1	Message	Date
antirez	fa4a5d5922	BITOP: handle integer encoded objects correctly. ... A bug in the implementation caused BITOP to crash the server if at least one one of the source objects was integer encoded. The new implementation takes an additional array of Redis objects pointers and calls getDecodedObject() to get a reference to a string encoded object, and then uses decrRefCount() to release the object. Tests modified to cover the regression and improve coverage.	2012-05-24 15:20:16 +02:00
antirez	7c34643f15	BITCOUNT performance improved. ... At Redis's default optimization level the command is now much faster, always using a constant-time bit manipualtion technique to count bits instead of GCC builtin popcount, and unrolling the loop. The current implementation performance is 1.5GB/s in a MBA 11" (1.8 Ghz i7) compiled with both GCC and clang. The algorithm used is described here: http://graphics.stanford.edu/~seander/bithacks.html	2012-05-24 15:20:11 +02:00
antirez	80f8028e3c	bitop.c renamed bitops.c ... bitop.c contains the "Bit related string operations" so it seems more logical to call it bitops instead of bitop. This also makes it matching the name of the test (unit/bitops.tcl).	2012-05-24 15:20:06 +02:00