romenskiy2012/jemalloc
1
0
Fork 0
mirror of https://github.com/jemalloc/jemalloc.git synced 2026-08-25 16:43:33 +03:00
Code Issues Projects Releases Packages Wiki Activity

Generalize chunk management hooks.

Browse source 
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.
This commit is contained in:
Jason Evans 2015-07-28 11:28:19 -04:00
parent d059b9d6a1
commit b49a334a64
20 changed files with 1021 additions and 552 deletions
Download patch file Download diff file Expand all files Collapse all files

8
src/chunk_dss.c
View file

@ -134,10 +134,10 @@ chunk_alloc_dss(arena_t *arena, void *new_addr, size_t size, size_t alignment,
dss_max = dss_next;
malloc_mutex_unlock(&dss_mtx);
if (cpad_size != 0) {
chunk_record(arena,
&arena->chunks_szad_dss,
&arena->chunks_ad_dss, false, cpad,
cpad_size, false);
chunk_hooks_t chunk_hooks =
CHUNK_HOOKS_INITIALIZER;
chunk_dalloc_wrapper(arena,
&chunk_hooks, cpad, cpad_size);
}
if (*zero) {
JEMALLOC_VALGRIND_MAKE_MEM_UNDEFINED(