lihao/jemalloc
1
0
Fork 0
mirror of https://github.com/jemalloc/jemalloc.git synced 2026-07-23 21:23:06 +00:00
Code Issues Packages Projects Releases Wiki Activity

Hooks: hook the realloc pathways that move/expand.

Browse Source
This commit is contained in:
David Goldblatt
2018-04-23 18:07:40 -07:00
committed by David Goldblatt
parent 67270040a5
commit cb0707c0fc
8 changed files with 231 additions and 48 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
src/large.c
View File

@@ -270,10 +270,12 @@ large_ralloc_move_helper(tsdn_t *tsdn, arena_t *arena, size_t usize,
}
void *
large_ralloc(tsdn_t *tsdn, arena_t *arena, extent_t *extent, size_t usize,
size_t alignment, bool zero, tcache_t *tcache) {
size_t oldusize = extent_usize_get(extent);
large_ralloc(tsdn_t *tsdn, arena_t *arena, void *ptr, size_t usize,
size_t alignment, bool zero, tcache_t *tcache,
hook_ralloc_args_t *hook_args) {
extent_t *extent = iealloc(tsdn, ptr);
size_t oldusize = extent_usize_get(extent);
/* The following should have been caught by callers. */
assert(usize > 0 && usize <= LARGE_MAXCLASS);
/* Both allocation sizes must be large to avoid a move. */
@@ -281,6 +283,9 @@ large_ralloc(tsdn_t *tsdn, arena_t *arena, extent_t *extent, size_t usize,
/* Try to avoid moving the allocation. */
if (!large_ralloc_no_move(tsdn, extent, usize, usize, zero)) {
hook_invoke_expand(hook_args->is_realloc
? hook_expand_realloc : hook_expand_rallocx, ptr, oldusize,
usize, (uintptr_t)ptr, hook_args->args);
return extent_addr_get(extent);
}
@@ -295,6 +300,12 @@ large_ralloc(tsdn_t *tsdn, arena_t *arena, extent_t *extent, size_t usize,
return NULL;
}
hook_invoke_alloc(hook_args->is_realloc
? hook_alloc_realloc : hook_alloc_rallocx, ret, (uintptr_t)ret,
hook_args->args);
hook_invoke_dalloc(hook_args->is_realloc
? hook_dalloc_realloc : hook_dalloc_rallocx, ptr, hook_args->args);
size_t copysize = (usize < oldusize) ? usize : oldusize;
memcpy(ret, extent_addr_get(extent), copysize);
isdalloct(tsdn, extent_addr_get(extent), oldusize, tcache, NULL, true);