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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef GPU_COMMAND_BUFFER_CLIENT_ATOMICOPS_H_ | 5 #ifndef GPU_COMMAND_BUFFER_CLIENT_ATOMICOPS_H_ |
6 #define GPU_COMMAND_BUFFER_CLIENT_ATOMICOPS_H_ | 6 #define GPU_COMMAND_BUFFER_CLIENT_ATOMICOPS_H_ |
7 | 7 |
| 8 #include "../../gpu_export.h" |
| 9 #include "../common/scoped_ptr.h" |
| 10 #include "../common/types.h" |
| 11 |
8 namespace gpu { | 12 namespace gpu { |
9 | 13 |
10 void MemoryBarrier(); | 14 void MemoryBarrier(); |
11 | 15 |
| 16 class LockImpl; |
| 17 class GPU_EXPORT Lock { |
| 18 public: |
| 19 Lock(); |
| 20 ~Lock(); |
| 21 void Acquire(); |
| 22 void Release(); |
| 23 bool Try(); |
| 24 void AssertAcquired() const; |
| 25 |
| 26 private: |
| 27 scoped_ptr<LockImpl> lock_; |
| 28 |
| 29 DISALLOW_COPY_AND_ASSIGN(Lock); |
| 30 }; |
| 31 |
| 32 // A helper class that acquires the given Lock while the AutoLock is in scope. |
| 33 class GPU_EXPORT AutoLock { |
| 34 public: |
| 35 explicit AutoLock(Lock& lock) : lock_(lock) { |
| 36 lock_.Acquire(); |
| 37 } |
| 38 |
| 39 ~AutoLock() { |
| 40 lock_.AssertAcquired(); |
| 41 lock_.Release(); |
| 42 } |
| 43 |
| 44 private: |
| 45 Lock& lock_; |
| 46 DISALLOW_COPY_AND_ASSIGN(AutoLock); |
| 47 }; |
| 48 |
12 } // namespace gpu | 49 } // namespace gpu |
13 | 50 |
14 #endif // GPU_COMMAND_BUFFER_CLIENT_ATOMICOPS_H_ | 51 #endif // GPU_COMMAND_BUFFER_CLIENT_ATOMICOPS_H_ |
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