Index: src/base/atomicops_internals_portable.h |
diff --git a/src/base/atomicops_internals_portable.h b/src/base/atomicops_internals_portable.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..a3a6e74c72e53bdb6c126be44b5e7622837e25a1 |
--- /dev/null |
+++ b/src/base/atomicops_internals_portable.h |
@@ -0,0 +1,138 @@ |
+// Copyright 2012 the V8 project authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+// This file is an internal atomic implementation, use atomicops.h instead. |
+ |
+#ifndef V8_BASE_ATOMICOPS_INTERNALS_PORTABLE_H_ |
+#define V8_BASE_ATOMICOPS_INTERNALS_PORTABLE_H_ |
+ |
+namespace v8 { |
+namespace base { |
+ |
+inline void MemoryBarrier() { __sync_synchronize(); } |
+ |
+inline Atomic32 NoBarrier_CompareAndSwap(volatile Atomic32* ptr, |
+ Atomic32 old_value, |
+ Atomic32 new_value) { |
+ return __sync_val_compare_and_swap(ptr, old_value, new_value); |
+} |
+ |
+inline Atomic32 NoBarrier_AtomicExchange(volatile Atomic32* ptr, |
+ Atomic32 new_value) { |
+ return __sync_lock_test_and_set(ptr, new_value); |
+} |
+ |
+inline Atomic32 NoBarrier_AtomicIncrement(volatile Atomic32* ptr, |
+ Atomic32 increment) { |
+ return __sync_add_and_fetch(ptr, increment); |
+} |
+ |
+inline Atomic32 Barrier_AtomicIncrement(volatile Atomic32* ptr, |
+ Atomic32 increment) { |
+ return __sync_add_and_fetch(ptr, increment); |
+} |
+ |
+inline Atomic32 Acquire_CompareAndSwap(volatile Atomic32* ptr, |
+ Atomic32 old_value, Atomic32 new_value) { |
+ return __sync_val_compare_and_swap(ptr, old_value, new_value); |
+} |
+ |
+inline Atomic32 Release_CompareAndSwap(volatile Atomic32* ptr, |
+ Atomic32 old_value, Atomic32 new_value) { |
+ return __sync_val_compare_and_swap(ptr, old_value, new_value); |
+} |
+ |
+inline void NoBarrier_Store(volatile Atomic8* ptr, Atomic8 value) { |
+ __sync_lock_test_and_set(ptr, value); |
+} |
+ |
+inline void NoBarrier_Store(volatile Atomic32* ptr, Atomic32 value) { |
+ __sync_lock_test_and_set(ptr, value); |
+} |
+ |
+inline void Acquire_Store(volatile Atomic32* ptr, Atomic32 value) { |
+ __sync_lock_test_and_set(ptr, value); |
+} |
+ |
+inline void Release_Store(volatile Atomic32* ptr, Atomic32 value) { |
+ __sync_lock_test_and_set(ptr, value); |
+} |
+ |
+inline Atomic8 NoBarrier_Load(volatile const Atomic8* ptr) { |
+ return __sync_add_and_fetch(ptr, 0); |
+} |
+ |
+inline Atomic32 NoBarrier_Load(volatile const Atomic32* ptr) { |
+ return __sync_add_and_fetch(ptr, 0); |
+} |
+ |
+inline Atomic32 Acquire_Load(volatile const Atomic32* ptr) { |
+ return __sync_add_and_fetch(ptr, 0); |
+} |
+ |
+inline Atomic32 Release_Load(volatile const Atomic32* ptr) { |
+ return __sync_add_and_fetch(ptr, 0); |
+} |
+ |
+// 64-bit versions of the operations. |
+// See the 32-bit versions for comments. |
+ |
+inline Atomic64 NoBarrier_CompareAndSwap(volatile Atomic64* ptr, |
+ Atomic64 old_value, |
+ Atomic64 new_value) { |
+ return __sync_val_compare_and_swap(ptr, old_value, new_value); |
+} |
+ |
+inline Atomic64 NoBarrier_AtomicExchange(volatile Atomic64* ptr, |
+ Atomic64 new_value) { |
+ return __sync_lock_test_and_set(ptr, new_value); |
+} |
+ |
+inline Atomic64 NoBarrier_AtomicIncrement(volatile Atomic64* ptr, |
+ Atomic64 increment) { |
+ return __sync_add_and_fetch(ptr, increment); |
+} |
+ |
+inline Atomic64 Barrier_AtomicIncrement(volatile Atomic64* ptr, |
+ Atomic64 increment) { |
+ return __sync_add_and_fetch(ptr, increment); |
+} |
+ |
+inline Atomic64 Acquire_CompareAndSwap(volatile Atomic64* ptr, |
+ Atomic64 old_value, Atomic64 new_value) { |
+ return __sync_val_compare_and_swap(ptr, old_value, new_value); |
+} |
+ |
+inline Atomic64 Release_CompareAndSwap(volatile Atomic64* ptr, |
+ Atomic64 old_value, Atomic64 new_value) { |
+ return __sync_val_compare_and_swap(ptr, old_value, new_value); |
+} |
+ |
+inline void NoBarrier_Store(volatile Atomic64* ptr, Atomic64 value) { |
+ __sync_lock_test_and_set(ptr, value); |
+} |
+ |
+inline void Acquire_Store(volatile Atomic64* ptr, Atomic64 value) { |
+ __sync_lock_test_and_set(ptr, value); |
+} |
+ |
+inline void Release_Store(volatile Atomic64* ptr, Atomic64 value) { |
+ __sync_lock_test_and_set(ptr, value); |
+} |
+ |
+inline Atomic64 NoBarrier_Load(volatile const Atomic64* ptr) { |
+ return __sync_add_and_fetch(ptr, 0); |
+} |
+ |
+inline Atomic64 Acquire_Load(volatile const Atomic64* ptr) { |
+ return __sync_add_and_fetch(ptr, 0); |
+} |
+ |
+inline Atomic64 Release_Load(volatile const Atomic64* ptr) { |
+ return __sync_add_and_fetch(ptr, 0); |
+} |
+} |
+} // namespace v8::base |
+ |
+#endif // V8_BASE_ATOMICOPS_INTERNALS_PORTABLE_H_ |