diff options
| author |  herb <herb@google.com> | 2015-09-04 10:38:58 -0700 |
|---|---|---|
| committer |  Commit bot <commit-bot@chromium.org> | 2015-09-04 10:38:58 -0700 |
| commit | 6f2a486040cb25465990196c229feb47e668e87f (patch) | |
| tree | fc63ba7119fad3229790ce920f5580fd75b7b7c8 /include/ports/SkAtomics_std.h | |
| parent | 714a710c428c3166b729b7756199927ab85eb69e (diff) | |
Parallel cache.
TBR=reed@google.com
BUG=skia:1330
Review URL: https://codereview.chromium.org/1264103003
Diffstat (limited to 'include/ports/SkAtomics_std.h')
| -rw-r--r-- | include/ports/SkAtomics_std.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/ports/SkAtomics_std.h b/include/ports/SkAtomics_std.h index 4c26858dfd..163efb78c0 100644 --- a/include/ports/SkAtomics_std.h +++ b/include/ports/SkAtomics_std.h @@ -39,6 +39,13 @@ 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. + std::atomic<T>* ap = reinterpret_cast<std::atomic<T>*>(ptr); + return std::atomic_fetch_sub_explicit(ap, val, (std::memory_order)mo); +} + +template <typename T> bool sk_atomic_compare_exchange(T* ptr, T* expected, T desired, sk_memory_order success, sk_memory_order failure) { |