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Add probes for all changes to malloc options.

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	* malloc/malloc.c (__libc_free): Add
	memory_mallopt_free_dyn_thresholds probe.
	(__libc_mallopt): Add multiple memory_mallopt probes.
	* manual/probes.texi: Document them.
This commit is contained in:
Alexandre Oliva
2013-09-20 11:10:55 -03:00
parent 3ea5be5436
commit 0653427fdb
3 changed files with 112 additions and 6 deletions
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30
malloc/malloc.c
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@ -2896,6 +2896,8 @@ __libc_free(void* mem)
{
mp_.mmap_threshold = chunksize (p);
mp_.trim_threshold = 2 * mp_.mmap_threshold;
LIBC_PROBE (memory_mallopt_free_dyn_thresholds, 2,
mp_.mmap_threshold, mp_.trim_threshold);
}
munmap_chunk(p);
return;
@ -4701,19 +4703,25 @@ int __libc_mallopt(int param_number, int value)
switch(param_number) {
case M_MXFAST:
if (value >= 0 && value <= MAX_FAST_SIZE) {
set_max_fast(value);
}
if (value >= 0 && value <= MAX_FAST_SIZE)
{
LIBC_PROBE (memory_mallopt_mxfast, 2, value, get_max_fast ());
set_max_fast(value);
}
else
res = 0;
break;
case M_TRIM_THRESHOLD:
LIBC_PROBE (memory_mallopt_trim_threshold, 3, value,
mp_.trim_threshold, mp_.no_dyn_threshold);
mp_.trim_threshold = value;
mp_.no_dyn_threshold = 1;
break;
case M_TOP_PAD:
LIBC_PROBE (memory_mallopt_top_pad, 3, value,
mp_.top_pad, mp_.no_dyn_threshold);
mp_.top_pad = value;
mp_.no_dyn_threshold = 1;
break;
@ -4724,33 +4732,45 @@ int __libc_mallopt(int param_number, int value)
res = 0;
else
{
LIBC_PROBE (memory_mallopt_mmap_threshold, 3, value,
mp_.mmap_threshold, mp_.no_dyn_threshold);
mp_.mmap_threshold = value;
mp_.no_dyn_threshold = 1;
}
break;
case M_MMAP_MAX:
LIBC_PROBE (memory_mallopt_mmap_max, 3, value,
mp_.n_mmaps_max, mp_.no_dyn_threshold);
mp_.n_mmaps_max = value;
mp_.no_dyn_threshold = 1;
break;
case M_CHECK_ACTION:
LIBC_PROBE (memory_mallopt_check_action, 2, value, check_action);
check_action = value;
break;
case M_PERTURB:
LIBC_PROBE (memory_mallopt_perturb, 2, value, perturb_byte);
perturb_byte = value;
break;
#ifdef PER_THREAD
case M_ARENA_TEST:
if (value > 0)
mp_.arena_test = value;
{
LIBC_PROBE (memory_mallopt_arena_test, 2, value, mp_.arena_test);
mp_.arena_test = value;
}
break;
case M_ARENA_MAX:
if (value > 0)
mp_.arena_max = value;
{
LIBC_PROBE (memory_mallopt_arena_max, 2, value, mp_.arena_max);
mp_.arena_max = value;
}
break;
#endif
}