diff options
| author | Abseil Team <absl-team@google.com> | 2018-09-12T18·03-0700 |
|---|---|---|
| committer | Gennadiy Civil <misterg@google.com> | 2018-09-13T17·24-0400 |
| commit | 8ff1374008259719b54a8cb128ef951c02da164c (patch) | |
| tree | d6768eeb981f8e3a14668c329336faee20291346 /absl/base/internal/low_level_alloc.cc | |
| parent | 02451914b9ad5320f81f56a89f3eef1f8683227c (diff) | |
Export of internal Abseil changes.
-- 821196cfb2a3b943ffdc4c9e75daec92d7ffb28b by Abseil Team <absl-team@google.com>: Performance improvements PiperOrigin-RevId: 212668992 -- 704858e2e767016bad27d53eec01d9d48e546b23 by Abseil Team <absl-team@google.com>: Low-level Portability enchancements for Abseil Mutex on WebAssembly. Emscripten Pthreads do not use signals, so remove use of pthread_sigmask or other async-signal-safe related handling code. PiperOrigin-RevId: 212527958 -- be3e38cb4d493b755132d20c8c2d1a51e45d5449 by Jon Cohen <cohenjon@google.com>: Internal change. PiperOrigin-RevId: 212523797 GitOrigin-RevId: 821196cfb2a3b943ffdc4c9e75daec92d7ffb28b Change-Id: I5694e23e4e09364a15dd6fc4e2e3f15e38835687
Diffstat (limited to 'absl/base/internal/low_level_alloc.cc')
| -rw-r--r-- | absl/base/internal/low_level_alloc.cc | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/absl/base/internal/low_level_alloc.cc b/absl/base/internal/low_level_alloc.cc index 0a6f30705345..6e636a02c5d1 100644 --- a/absl/base/internal/low_level_alloc.cc +++ b/absl/base/internal/low_level_alloc.cc @@ -401,16 +401,20 @@ bool LowLevelAlloc::DeleteArena(Arena *arena) { ABSL_RAW_CHECK(munmap_result != 0, "LowLevelAlloc::DeleteArena: VitualFree failed"); #else +#ifndef ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING if ((arena->flags & LowLevelAlloc::kAsyncSignalSafe) == 0) { munmap_result = munmap(region, size); } else { munmap_result = base_internal::DirectMunmap(region, size); } +#else + munmap_result = munmap(region, size); +#endif // ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING if (munmap_result != 0) { ABSL_RAW_LOG(FATAL, "LowLevelAlloc::DeleteArena: munmap failed: %d", errno); } -#endif +#endif // _WIN32 } section.Leave(); arena->~Arena(); @@ -545,6 +549,7 @@ static void *DoAllocWithArena(size_t request, LowLevelAlloc::Arena *arena) { MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE); ABSL_RAW_CHECK(new_pages != nullptr, "VirtualAlloc failed"); #else +#ifndef ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING if ((arena->flags & LowLevelAlloc::kAsyncSignalSafe) != 0) { new_pages = base_internal::DirectMmap(nullptr, new_pages_size, PROT_WRITE|PROT_READ, MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); @@ -552,10 +557,15 @@ static void *DoAllocWithArena(size_t request, LowLevelAlloc::Arena *arena) { new_pages = mmap(nullptr, new_pages_size, PROT_WRITE | PROT_READ, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); } +#else + new_pages = mmap(nullptr, new_pages_size, PROT_WRITE | PROT_READ, + MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); +#endif // ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING if (new_pages == MAP_FAILED) { ABSL_RAW_LOG(FATAL, "mmap error: %d", errno); } -#endif + +#endif // _WIN32 arena->mu.Lock(); s = reinterpret_cast<AllocList *>(new_pages); s->header.size = new_pages_size; |