5177995530
Read adjacent rtree elements while holding element locks, since the extents mutex only protects against relevant like-state extent mutation. Fix management of the 'coalesced' loop state variable to merge forward/backward results, rather than overwriting the result of forward coalescing if attempting to coalesce backward. In practice this caused no correctness issues, but could cause extra iterations in rare cases. These regressions were introduced by d27f29b468ae3e9d2b1da4a9880351d76e5a1662 (Disentangle arena and extent locking.).
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 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://jemalloc.net/