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Darwin malloc_size override support proposal.

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Darwin has similar api than Linux/FreeBSD's malloc_usable_size.
This commit is contained in:
David CARLIER
2021-02-17 20:40:11 +00:00
committed by Qi Wang
parent ab0f1604b4
commit cf9724531a
13 changed files with 53 additions and 19 deletions
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35
src/jemalloc.c
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@@ -3904,18 +3904,14 @@ je_malloc_stats_print(void (*write_cb)(void *, const char *), void *cbopaque,
}
#undef STATS_PRINT_BUFSIZE
JEMALLOC_EXPORT size_t JEMALLOC_NOTHROW
je_malloc_usable_size(JEMALLOC_USABLE_SIZE_CONST void *ptr) {
size_t ret;
tsdn_t *tsdn;
LOG("core.malloc_usable_size.entry", "ptr: %p", ptr);
JEMALLOC_ALWAYS_INLINE size_t
je_malloc_usable_size_impl(JEMALLOC_USABLE_SIZE_CONST void *ptr) {
assert(malloc_initialized() || IS_INITIALIZER);
tsdn = tsdn_fetch();
tsdn_t *tsdn = tsdn_fetch();
check_entry_exit_locking(tsdn);
size_t ret;
if (unlikely(ptr == NULL)) {
ret = 0;
} else {
@@ -3926,12 +3922,33 @@ je_malloc_usable_size(JEMALLOC_USABLE_SIZE_CONST void *ptr) {
ret = isalloc(tsdn, ptr);
}
}
check_entry_exit_locking(tsdn);
return ret;
}
JEMALLOC_EXPORT size_t JEMALLOC_NOTHROW
je_malloc_usable_size(JEMALLOC_USABLE_SIZE_CONST void *ptr) {
LOG("core.malloc_usable_size.entry", "ptr: %p", ptr);
size_t ret = je_malloc_usable_size_impl(ptr);
LOG("core.malloc_usable_size.exit", "result: %zu", ret);
return ret;
}
#ifdef JEMALLOC_HAVE_MALLOC_SIZE
JEMALLOC_EXPORT size_t JEMALLOC_NOTHROW
je_malloc_size(const void *ptr) {
LOG("core.malloc_size.entry", "ptr: %p", ptr);
size_t ret = je_malloc_usable_size_impl(ptr);
LOG("core.malloc_size.exit", "result: %zu", ret);
return ret;
}
#endif
static void
batch_alloc_prof_sample_assert(tsd_t *tsd, size_t batch, size_t usize) {
assert(config_prof && opt_prof);