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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 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 #include "base/synchronization/lock_impl.h" | 5 #include "base/synchronization/lock_impl.h" |
6 | 6 |
7 namespace base { | 7 namespace base { |
8 namespace internal { | 8 namespace internal { |
9 | 9 |
10 LockImpl::LockImpl() { | 10 LockImpl::LockImpl() { |
11 // The second parameter is the spin count, for short-held locks it avoid the | 11 // The second parameter is the spin count, for short-held locks it avoid the |
12 // contending thread from going to sleep which helps performance greatly. | 12 // contending thread from going to sleep which helps performance greatly. |
13 ::InitializeCriticalSectionAndSpinCount(&os_lock_, 2000); | 13 ::InitializeCriticalSectionAndSpinCount(&native_handle_, 2000); |
14 } | 14 } |
15 | 15 |
16 LockImpl::~LockImpl() { | 16 LockImpl::~LockImpl() { |
17 ::DeleteCriticalSection(&os_lock_); | 17 ::DeleteCriticalSection(&native_handle_); |
18 } | 18 } |
19 | 19 |
20 bool LockImpl::Try() { | 20 bool LockImpl::Try() { |
21 if (::TryEnterCriticalSection(&os_lock_) != FALSE) { | 21 if (::TryEnterCriticalSection(&native_handle_) != FALSE) { |
22 return true; | 22 return true; |
23 } | 23 } |
24 return false; | 24 return false; |
25 } | 25 } |
26 | 26 |
27 void LockImpl::Lock() { | 27 void LockImpl::Lock() { |
28 ::EnterCriticalSection(&os_lock_); | 28 ::EnterCriticalSection(&native_handle_); |
29 } | 29 } |
30 | 30 |
31 void LockImpl::Unlock() { | 31 void LockImpl::Unlock() { |
32 ::LeaveCriticalSection(&os_lock_); | 32 ::LeaveCriticalSection(&native_handle_); |
33 } | 33 } |
34 | 34 |
35 } // namespace internal | 35 } // namespace internal |
36 } // namespace base | 36 } // namespace base |
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