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Lines 392-398
__FBSDID("$FreeBSD: head/lib/libc/stdlib
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static const bool __isthreaded = true; |
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static const bool __isthreaded = true; |
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#endif |
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#endif |
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| 395 |
#if defined(MOZ_MEMORY_SOLARIS) && defined(MAP_ALIGN) && !defined(JEMALLOC_NEVER_USES_MAP_ALIGN) |
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#if defined(MOZ_MEMORY_SOLARIS) || defined(MOZ_MEMORY_LINUX) || defined(MOZ_MEMORY_BSD) |
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#define JEMALLOC_USES_MAP_ALIGN /* Required on Solaris 10. Might improve performance elsewhere. */ |
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#define JEMALLOC_USES_MAP_ALIGN /* Required on Solaris 10. Might improve performance elsewhere. */ |
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#endif |
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#endif |
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Lines 2305-2324
pages_map_align(size_t size, int pfd, si
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* We don't use MAP_FIXED here, because it can cause the *replacement* |
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* We don't use MAP_FIXED here, because it can cause the *replacement* |
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* of existing mappings, and we only want to create new mappings. |
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* of existing mappings, and we only want to create new mappings. |
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*/ |
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*/ |
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#ifdef MALLOC_PAGEFILE |
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ret = mmap(NULL, size + alignment, PROT_READ | PROT_WRITE, MAP_PRIVATE | |
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if (pfd != -1) { |
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MAP_NOSYNC| MAP_ANON, -1, 0); |
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ret = mmap((void *)alignment, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | |
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MAP_NOSYNC | MAP_ALIGN, pfd, 0); |
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} else |
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#endif |
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{ |
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ret = mmap((void *)alignment, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | |
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MAP_NOSYNC | MAP_ALIGN | MAP_ANON, -1, 0); |
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} |
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assert(ret != NULL); |
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assert(ret != NULL); |
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2311 |
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| 2320 |
if (ret == MAP_FAILED) |
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if (ret == MAP_FAILED) |
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ret = NULL; |
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ret = NULL; |
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2314 |
else { |
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uintptr_t aligned_ret; |
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size_t extra_size; |
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| 2318 |
aligned_ret = (uintptr_t)ret + alignment - 1; |
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aligned_ret &= ~(alignment - 1); |
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extra_size = aligned_ret - (uintptr_t)ret; |
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munmap(ret, extra_size); |
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munmap(ret + extra_size + size, alignment - extra_size); |
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ret = (void *)aligned_ret; |
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#ifdef MALLOC_PAGEFILE |
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if (pfd != -1) { |
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ret = mmap(ret, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | |
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MAP_NOSYNC | MAP_FIXED, pfd, 0); |
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} |
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if (ret == MAP_FAILED) |
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ret = NULL; |
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#endif |
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} |
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return (ret); |
2333 |
return (ret); |
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} |
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} |
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#endif |
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#endif |
