project-base/server-skynet-source-3rd-jemalloc
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Make zone_{free, realloc, free_definite_size} fallback to the system allocator if they are called with a pointer that jemalloc didn't allocate

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It turns out some OSX system libraries (like CoreGraphics on 10.6) like
to call malloc_zone_* functions, but giving them pointers that weren't
allocated with the zone they are using.

Possibly, they do malloc_zone_malloc(malloc_default_zone()) before we
register the jemalloc zone, and malloc_zone_realloc(malloc_default_zone())
after. malloc_default_zone() returning a different value in both cases.
This commit is contained in:
Mike Hommey 2012-03-26 18:39:35 +02:00 committed by Jason Evans
parent 5c89c50d18
commit 5b3db098f7
1 changed files with 17 additions and 4 deletions
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21
src/zone.c
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@ -80,14 +80,22 @@ static void
zone_free(malloc_zone_t *zone, void *ptr)
{
je_free(ptr);
if (ivsalloc(ptr) != 0) {
je_free(ptr);
return;
}
free(ptr);
}
static void *
zone_realloc(malloc_zone_t *zone, void *ptr, size_t size)
{
return (je_realloc(ptr, size));
if (ivsalloc(ptr) != 0)
return (je_realloc(ptr, size));
return (realloc(ptr, size));
}
#if (JEMALLOC_ZONE_VERSION >= 5)
@ -107,8 +115,13 @@ static void
zone_free_definite_size(malloc_zone_t *zone, void *ptr, size_t size)
{
assert(ivsalloc(ptr) == size);
je_free(ptr);
if (ivsalloc(ptr) != 0) {
assert(ivsalloc(ptr) == size);
je_free(ptr);
return;
}
free(ptr);
}
#endif