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| 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 |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #ifndef RLZ_CHROMEOS_LIB_RECURSIVE_LOCK_H_ |
| 6 #define RLZ_CHROMEOS_LIB_RECURSIVE_LOCK_H_ |
| 7 |
| 8 #include "base/atomicops.h" |
| 9 #include "base/basictypes.h" |
| 10 #include "base/synchronization/lock.h" |
| 11 |
| 12 namespace rlz_lib { |
| 13 |
| 14 |
| 15 class RecursiveLock { |
| 16 public: |
| 17 RecursiveLock(); |
| 18 ~RecursiveLock(); |
| 19 |
| 20 void Acquire(); |
| 21 void Release(); |
| 22 |
| 23 private: |
| 24 // Underlying non-recursive lock. |
| 25 base::Lock lock_; |
| 26 // Owner thread ID. |
| 27 base::subtle::Atomic32 owner_; |
| 28 // Recursion lock depth. |
| 29 int recursion_; |
| 30 }; |
| 31 |
| 32 } // namespace rlz_lib |
| 33 |
| 34 #endif // RLZ_CHROMEOS_LIB_RECURSIVE_LOCK_H_ |
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