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a54018337c
arena_types.h + arena_structs.h + arena_externs.h merged into arena.h, keeping the three logical sections (TYPES / STRUCTS / EXTERNS) with explicit dividers. arena_inlines_a.h and arena_inlines_b.h stay separate; arena_inlines_b.h now carries a comment explaining why merging the two would reintroduce a real #include cycle through tcache_inlines.h -> arena_choose (the asymmetric cycle-breaker). Two ordering gotchas this consolidation surfaced: 1. tsd_internals.h is included from tsd.h via tsd_generic.h, sometimes long before arena.h is loaded (e.g. ckh.c includes ckh.h -> tsd.h before jemalloc_internal_includes.h). TSD_INITIALIZER's expansion in tsd_generic.h's function bodies references ARENA_DECAY_NTICKS_PER_UPDATE, so it must already be defined. Factor the constant into a new minimal header, arena_decay_constants.h, that pulls nothing but jemalloc_preamble.h, and include it from both arena.h and tsd_internals.h. arena_t is still added as a forward decl in tsd_internals.h -- including arena.h there would trigger arena_stats.h -> mutex.h -> tsd.h -> re-entry into this very file. 2. extent_dss.h previously included arena_types.h for the arena_t pointer type, but arena.h now includes extent_dss.h (it was a STRUCTS-section dep). Forward-decl arena_t in extent_dss.h to break that cycle. Additional forward decls in tcache.h and large.h (arena_t *). These were previously satisfied by the master include order loading arena_types.h before everything else; with arena.h now in the EXTERNS section, large.h and tcache.h are parsed earlier than arena.h, so they need to declare arena_t themselves. jemalloc_internal_externs.h's #include of arena_types.h was vestigial -- the file uses no arena symbols. Dropped. |
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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: https://jemalloc.net/