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comparison: security/sandbox/chromium/base/synchronization/lock_impl_win.cc
security/sandbox/chromium/base/synchronization/lock_impl_win.cc
- changeset 2
- 7e26c7da4463
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| -1:000000000000 | 0:d6306ba23afc |
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| 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 | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "base/synchronization/lock_impl.h" | |
| 6 | |
| 7 namespace base { | |
| 8 namespace internal { | |
| 9 | |
| 10 LockImpl::LockImpl() { | |
| 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. | |
| 13 ::InitializeCriticalSectionAndSpinCount(&native_handle_, 2000); | |
| 14 } | |
| 15 | |
| 16 LockImpl::~LockImpl() { | |
| 17 ::DeleteCriticalSection(&native_handle_); | |
| 18 } | |
| 19 | |
| 20 bool LockImpl::Try() { | |
| 21 if (::TryEnterCriticalSection(&native_handle_) != FALSE) { | |
| 22 return true; | |
| 23 } | |
| 24 return false; | |
| 25 } | |
| 26 | |
| 27 void LockImpl::Lock() { | |
| 28 ::EnterCriticalSection(&native_handle_); | |
| 29 } | |
| 30 | |
| 31 void LockImpl::Unlock() { | |
| 32 ::LeaveCriticalSection(&native_handle_); | |
| 33 } | |
| 34 | |
| 35 } // namespace internal | |
| 36 } // namespace base |
