project-base/server-skynet-source-3rd-jemalloc
2
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Allow setting extent hooks on uninitialized auto arenas.

Browse Source 
Setting extent hooks can result in initializing an unused auto arena.  This is
useful to install extent hooks on auto arenas from the beginning.
This commit is contained in:
Qi Wang
2018-04-11 15:15:26 -07:00
committed by Qi Wang
parent 02585420c3
commit 3f0dc64c6b
2 changed files with 71 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

45
src/ctl.c
View File

@@ -2251,20 +2251,41 @@ arena_i_extent_hooks_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
malloc_mutex_lock(tsd_tsdn(tsd), &ctl_mtx);
MIB_UNSIGNED(arena_ind, 1);
if (arena_ind < narenas_total_get() && (arena =
arena_get(tsd_tsdn(tsd), arena_ind, false)) != NULL) {
if (newp != NULL) {
extent_hooks_t *old_extent_hooks;
extent_hooks_t *new_extent_hooks
JEMALLOC_CC_SILENCE_INIT(NULL);
WRITE(new_extent_hooks, extent_hooks_t *);
old_extent_hooks = extent_hooks_set(tsd, arena,
new_extent_hooks);
if (arena_ind < narenas_total_get()) {
extent_hooks_t *old_extent_hooks;
arena = arena_get(tsd_tsdn(tsd), arena_ind, false);
if (arena == NULL) {
if (arena_ind >= narenas_auto) {
ret = EFAULT;
goto label_return;
}
old_extent_hooks =
(extent_hooks_t *)&extent_hooks_default;
READ(old_extent_hooks, extent_hooks_t *);
if (newp != NULL) {
/* Initialize a new arena as a side effect. */
extent_hooks_t *new_extent_hooks
JEMALLOC_CC_SILENCE_INIT(NULL);
WRITE(new_extent_hooks, extent_hooks_t *);
arena = arena_init(tsd_tsdn(tsd), arena_ind,
new_extent_hooks);
if (arena == NULL) {
ret = EFAULT;
goto label_return;
}
}
} else {
extent_hooks_t *old_extent_hooks =
extent_hooks_get(arena);
READ(old_extent_hooks, extent_hooks_t *);
if (newp != NULL) {
extent_hooks_t *new_extent_hooks
JEMALLOC_CC_SILENCE_INIT(NULL);
WRITE(new_extent_hooks, extent_hooks_t *);
old_extent_hooks = extent_hooks_set(tsd, arena,
new_extent_hooks);
READ(old_extent_hooks, extent_hooks_t *);
} else {
old_extent_hooks = extent_hooks_get(arena);
READ(old_extent_hooks, extent_hooks_t *);
}
}
} else {
ret = EFAULT;