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1dfa6f7aa4
The pai_t interface implements C-style polymorphism via function pointers to abstract over PAC and HPA. This abstraction provides no real benefit: only two implementations exist, the dispatcher already knows which one to use, and HPA stubs 2 of 5 operations. Remove the runtime dispatch in favor of direct calls. This commit: - Promotes pac_alloc/expand/shrink/dalloc/time_until_deferred_work to external linkage and replaces the pai_t *self parameter with pac_t *pac. - Promotes hpa_alloc/expand/shrink/dalloc/time_until_deferred_work to external linkage and replaces pai_t *self with hpa_shard_t *shard. - Updates hpa_dalloc_batch's signature to take hpa_shard_t * directly and removes the hpa_from_pai container-of helper. Updates internal callers in hpa_alloc, hpa_dalloc, and hpa_sec_flush_impl. - Drops the vtable assignments from pac_init() and hpa_shard_init(). - Replaces pai_alloc/dalloc/etc. dispatch in pa.c with direct calls. HPA expand and shrink (which are unconditional failure stubs) are skipped entirely for HPA-owned extents. - Removes the pa_get_pai() helper. - Updates tests in test/unit/hpa.c and test/unit/hpa_sec_integration.c to call hpa_alloc/dalloc/etc. directly. The pai_t struct field stays as dead weight in pac_t and hpa_shard_t; it is removed in the next commit along with pai.h itself. No behavioral changes. |
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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/