1 files changed, 43 insertions, 0 deletions
diff --git a/chromium/third_party/skia/src/ports/SkAtomics_sync.h b/chromium/third_party/skia/src/ports/SkAtomics_sync.h
new file mode 100644
index 00000000000..b0d17527f07
--- /dev/null
+++ b/chromium/third_party/skia/src/ports/SkAtomics_sync.h
@@ -0,0 +1,43 @@
+/*
+ * Copyright 2013 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkAtomics_sync_DEFINED
+#define SkAtomics_sync_DEFINED
+
+/** GCC/Clang __sync based atomics. */
+
+#include <stdint.h>
+
+static inline __attribute__((always_inline)) int32_t sk_atomic_inc(int32_t* addr) {
+    return __sync_fetch_and_add(addr, 1);
+}
+
+static inline __attribute__((always_inline)) int32_t sk_atomic_add(int32_t* addr, int32_t inc) {
+    return __sync_fetch_and_add(addr, inc);
+}
+
+static inline __attribute__((always_inline)) int32_t sk_atomic_dec(int32_t* addr) {
+    return __sync_fetch_and_add(addr, -1);
+}
+
+static inline __attribute__((always_inline)) void sk_membar_acquire__after_atomic_dec() { }
+
+static inline __attribute__((always_inline)) bool sk_atomic_cas(int32_t* addr,
+                                                                int32_t before,
+                                                                int32_t after) {
+    return __sync_bool_compare_and_swap(addr, before, after);
+}
+
+static inline __attribute__((always_inline)) void* sk_atomic_cas(void** addr,
+                                                                 void* before,
+                                                                 void* after) {
+    return __sync_val_compare_and_swap(addr, before, after);
+}
+
+static inline __attribute__((always_inline)) void sk_membar_acquire__after_atomic_conditional_inc() { }
+
+#endif