2013-09-20 Alexandre Oliva <aoliva@redhat.com>
+ * malloc/arena.c (arena_get_retry): Add memory_arena_retry probe.
+ * manual/probes.texi: Document it.
+
* malloc/malloc.c (__libc_malloc): Add memory_malloc_retry probe.
(__libc_realloc): Add memory_realloc_retry probe.
(__libc_memalign): Add memory_memalign_retry probe.
static mstate
arena_get_retry (mstate ar_ptr, size_t bytes)
{
+ LIBC_PROBE (memory_arena_retry, 2, bytes, ar_ptr);
if(ar_ptr != &main_arena) {
(void)mutex_unlock(&ar_ptr->mutex);
ar_ptr = &main_arena;
user-requested allocation size is in @var{$arg1}.
@end deftp
+@deftp Probe memory_arena_retry (size_t @var{$arg1}, void *@var{$arg2})
+This probe is triggered within @code{arena_get_retry} (the function
+called to select the alternate arena in which to retry an allocation
+that failed on the first attempt), before the selection of an alternate
+arena. This probe is redundant, but much easier to use when it's not
+important to determine which of the various memory allocation functions
+is failing to allocate on the first try. Argument @var{$arg1} is the
+same as in the function-specific probes, except for extra room for
+padding introduced by functions that have to ensure stricter alignment.
+Argument @var{$arg2} is the arena in which allocation failed.
+@end deftp
+
@deftp Probe memory_arena_new (void *@var{$arg1}, size_t @var{$arg2})
This probe is triggered when @code{malloc} allocates and initializes an
additional arena (not the main arena), but before the arena is assigned