glibc/glibc-rh740506.patch
Jeff Law 25912eaa88 - Update from master (16c6f99)
- Fix typo in recent tzfile change (#769476)
  - Make MALLOC_ARENA_MAX and MALLOC_ARENA_TEST match documentation
    (#740506)
  - Revert "fix" to pthread_cond_wait (#769421)
  - Extract patch for 730856 from fedora-patch into a distinct patchfile
2011-12-22 19:25:40 +00:00

36 lines
975 B
Diff

* malloc/arena.c (arena_get2): Avoid unnecessarily
retrieving #cpus from /proc.
* malloc/malloc.c (mALLOPt): Clamp arena_test based on
the value of arena_max.
diff --git a/malloc/arena.c b/malloc/arena.c
index cb8548b..00f1da5 100644
--- a/malloc/arena.c
+++ b/malloc/arena.c
@@ -828,7 +828,7 @@ arena_get2(mstate a_tsd, size_t size)
{
if (mp_.arena_max != 0)
narenas_limit = mp_.arena_max;
- else
+ else if (narenas > mp_.arena_test)
{
int n = __get_nprocs ();
diff --git a/malloc/malloc.c b/malloc/malloc.c
index 8608083..f8d32da 100644
--- a/malloc/malloc.c
+++ b/malloc/malloc.c
@@ -4842,6 +4842,12 @@ int mALLOPt(int param_number, int value)
break;
#endif
}
+#ifdef PER_THREAD
+ /* Clamp ARENA_TEST from ARENA_MAX to avoid creating too many
+ arenas. */
+ if (mp_.arena_max > 0 && mp_.arena_max <= mp_.arena_test)
+ mp_.arena_test = mp_.arena_max - 1;
+#endif
(void)mutex_unlock(&av->mutex);
return res;
}