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Add malloc probes for sbrk and heap resizing.

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	* malloc/arena.c (new_heap): New memory_heap_new probe.
	(grow_heap): New memory_heap_more probe.
	(shrink_heap): New memory_heap_less probe.
	(heap_trim): New memory_heap_free probe.
	* malloc/malloc.c (sysmalloc): New memory_sbrk_more probe.
	(systrim): New memory_sbrk_less probe.
	* manual/probes.texi: Document them.
This commit is contained in:
Alexandre Oliva
2013-09-20 11:10:56 -03:00
parent 655673f312
commit 322dea0838
4 changed files with 58 additions and 1 deletions
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6
malloc/malloc.c
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@ -2448,8 +2448,10 @@ static void* sysmalloc(INTERNAL_SIZE_T nb, mstate av)
below even if we cannot call MORECORE.
*/
if (size > 0)
if (size > 0) {
brk = (char*)(MORECORE(size));
LIBC_PROBE (memory_sbrk_more, 2, brk, size);
}
if (brk != (char*)(MORECORE_FAILURE)) {
/* Call the `morecore' hook if necessary. */
@ -2747,6 +2749,8 @@ static int systrim(size_t pad, mstate av)
(*hook) ();
new_brk = (char*)(MORECORE(0));
LIBC_PROBE (memory_sbrk_less, 2, new_brk, extra);
if (new_brk != (char*)MORECORE_FAILURE) {
released = (long)(current_brk - new_brk);