diff options
| author |  herb <herb@google.com> | 2015-09-16 07:46:17 -0700 |
|---|---|---|
| committer |  Commit bot <commit-bot@chromium.org> | 2015-09-16 07:46:17 -0700 |
| commit | 3667d5bf3f6d8eea90142046202c4f61cfcd5fea (patch) | |
| tree | 2d3bd7380f03fb5696e8e61a1f1266e4553cdca6 /include/ports/SkAtomics_atomic.h | |
| parent | 42bd6bfd0dff456e8c3ec98ca8181a5fa02398f8 (diff) | |
Add subtract to atomics.
BUG=skia:
Review URL: https://codereview.chromium.org/1348113004
Diffstat (limited to 'include/ports/SkAtomics_atomic.h')
| -rw-r--r-- | include/ports/SkAtomics_atomic.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/ports/SkAtomics_atomic.h b/include/ports/SkAtomics_atomic.h index ddbf7c3f37..64ee823f90 100644 --- a/include/ports/SkAtomics_atomic.h +++ b/include/ports/SkAtomics_atomic.h @@ -32,6 +32,12 @@ T sk_atomic_fetch_add(T* ptr, T val, sk_memory_order mo) { } template <typename T> +T sk_atomic_fetch_sub(T* ptr, T val, sk_memory_order mo) { + // All values of mo are valid. + return __atomic_fetch_sub(ptr, val, mo); +} + +template <typename T> bool sk_atomic_compare_exchange(T* ptr, T* expected, T desired, sk_memory_order success, sk_memory_order failure) { |