f04a0bef99
Fix prof regressions related to tdata (main per thread profiling data structure) destruction: - Deadlock. The fix for this was intended to be part of 20c31deaae38ed9aa4fe169ed65e0c45cd542955 (Test prof.reset mallctl and fix numerous discovered bugs.) but the fix was left incomplete. - Destruction race. Detaching tdata just prior to destruction without holding the tdatas lock made it possible for another thread to destroy the tdata out from under the thread that was on its way to doing so.
jemalloc is a general purpose malloc(3) implementation that emphasizes fragmentation avoidance and scalable concurrency support. jemalloc first came into use as the FreeBSD libc allocator in 2005, and since then it has found its way into numerous applications that rely on its predictable behavior. In 2010 jemalloc development efforts broadened to include developer support features such as heap profiling, Valgrind integration, and extensive monitoring/tuning hooks. Modern jemalloc releases continue to be integrated back into FreeBSD, and therefore versatility remains critical. Ongoing development efforts trend toward making jemalloc among the best allocators for a broad range of demanding applications, and eliminating/mitigating weaknesses that have practical repercussions for real world applications. The COPYING file contains copyright and licensing information. The INSTALL file contains information on how to configure, build, and install jemalloc. The ChangeLog file contains a brief summary of changes for each release. URL: http://www.canonware.com/jemalloc/