jemalloc.git - jemalloc is a general purpose malloc(3) implementation that emphasizes fragmentation avoidance and scalable concurrency support.

	Commit message (Collapse)	Author	Age	Files	Lines
*	Use syscall(2) rather than {open,read,close}(2) during boot.	Jason Evans	2016-10-30	1	-0/+19
\| \| \| \| \| \| \| \| \|	Some applications wrap various system calls, and if they call the allocator in their wrappers, unexpected reentry can result. This is not a general solution (many other syscalls are spread throughout the code), but this resolves a bootstrapping issue that is apparently common. This resolves #443.
*	Close file descriptor after reading "/proc/sys/vm/overcommit_memory".	Jason Evans	2016-09-26	1	-0/+1
\| \| \| \| \| \| \|	This bug was introduced by c2f970c32b527660a33fa513a76d913c812dcf7c (Modify pages_map() to support mapping uncommitted virtual memory.). This resolves #399.
*	Modify pages_map() to support mapping uncommitted virtual memory.	Jason Evans	2016-05-06	1	-18/+98
\| \| \| \| \| \| \| \| \| \| \|	If the OS overcommits: - Commit all mappings in pages_map() regardless of whether the caller requested committed memory. - Linux-specific: Specify MAP_NORESERVE to avoid unfortunate interactions with heuristic overcommit mode during fork(2). This resolves #193.
*	Try to decommit new chunks.	Jason Evans	2015-08-12	1	-1/+7
\| \| \| \|	Always leave decommit disabled on non-Windows systems.
*	Refactor arena_mapbits_{small,large}_set() to not preserve unzeroed.	Jason Evans	2015-08-11	1	-1/+1
\| \| \| \| \|	Fix arena_run_split_large_helper() to treat newly committed memory as zeroed.
*	Refactor arena_mapbits unzeroed flag management.	Jason Evans	2015-08-11	1	-1/+1
\| \| \| \| \| \|	Only set the unzeroed flag when initializing the entire mapbits entry, rather than mutating just the unzeroed bit. This simplifies the possible mapbits state transitions.
*	Generalize chunk management hooks.	Jason Evans	2015-08-04	1	-0/+167
	Add the "arena.<i>.chunk_hooks" mallctl, which replaces and expands on the "arena.<i>.chunk.{alloc,dalloc,purge}" mallctls. The chunk hooks allow control over chunk allocation/deallocation, decommit/commit, purging, and splitting/merging, such that the application can rely on jemalloc's internal chunk caching and retaining functionality, yet implement a variety of chunk management mechanisms and policies. Merge the chunks_[sz]ad_{mmap,dss} red-black trees into chunks_[sz]ad_retained. This slightly reduces how hard jemalloc tries to honor the dss precedence setting; prior to this change the precedence setting was also consulted when recycling chunks. Fix chunk purging. Don't purge chunks in arena_purge_stashed(); instead deallocate them in arena_unstash_purged(), so that the dirty memory linkage remains valid until after the last time it is used. This resolves #176 and #201.