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diff -urpx 'cscope*' -x '.*.swp' mozilla-1.9.1-orig/memory/jemalloc/jemalloc.c mozilla-1.9.1/memory/jemalloc/jemalloc.c
--- mozilla-orig/memory/jemalloc/jemalloc.c 2009-07-30 17:30:25.000000000 +0200
+++ mozilla/memory/jemalloc/jemalloc.c 2009-08-10 14:28:59.000000000 +0200
@@ -392,7 +392,7 @@ __FBSDID("$FreeBSD: head/lib/libc/stdlib
static const bool __isthreaded = true;
#endif
-#if defined(MOZ_MEMORY_SOLARIS) && defined(MAP_ALIGN) && !defined(JEMALLOC_NEVER_USES_MAP_ALIGN)
+#if defined(MOZ_MEMORY_SOLARIS) || defined(MOZ_MEMORY_LINUX) || defined(MOZ_MEMORY_BSD)
#define JEMALLOC_USES_MAP_ALIGN /* Required on Solaris 10. Might improve performance elsewhere. */
#endif
@@ -2305,20 +2305,31 @@ pages_map_align(size_t size, int pfd, si
* We don't use MAP_FIXED here, because it can cause the *replacement*
* of existing mappings, and we only want to create new mappings.
*/
-#ifdef MALLOC_PAGEFILE
- if (pfd != -1) {
- ret = mmap((void *)alignment, size, PROT_READ | PROT_WRITE, MAP_PRIVATE |
- MAP_NOSYNC | MAP_ALIGN, pfd, 0);
- } else
-#endif
- {
- ret = mmap((void *)alignment, size, PROT_READ | PROT_WRITE, MAP_PRIVATE |
- MAP_NOSYNC | MAP_ALIGN | MAP_ANON, -1, 0);
- }
+ ret = mmap(NULL, size + alignment, PROT_READ | PROT_WRITE, MAP_PRIVATE |
+ MAP_NOSYNC| MAP_ANON, -1, 0);
assert(ret != NULL);
if (ret == MAP_FAILED)
ret = NULL;
+ else {
+ uintptr_t aligned_ret;
+ size_t extra_size;
+
+ aligned_ret = (uintptr_t)ret + alignment - 1;
+ aligned_ret &= ~(alignment - 1);
+ extra_size = aligned_ret - (uintptr_t)ret;
+ munmap(ret, extra_size);
+ munmap(ret + extra_size + size, alignment - extra_size);
+ ret = (void *)aligned_ret;
+#ifdef MALLOC_PAGEFILE
+ if (pfd != -1) {
+ ret = mmap(ret, size, PROT_READ | PROT_WRITE, MAP_PRIVATE |
+ MAP_NOSYNC | MAP_FIXED, pfd, 0);
+ }
+ if (ret == MAP_FAILED)
+ ret = NULL;
+#endif
+ }
return (ret);
}
#endif
|
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