base/synchronization/lock.cc

   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 // This file is used for debugging assertion support.  The Lock class
   6 // is functionally a wrapper around the LockImpl class, so the only
   7 // real intelligence in the class is in the debugging logic.
   8
   9 #include "base/synchronization/lock.h"
  10
  11 #if DCHECK_IS_ON()
  12
  13 namespace base {
  14
  15 Lock::Lock() : lock_() {
  16 }
  17
  18 Lock::~Lock() {
  19   DCHECK(owning_thread_ref_.is_null());
  20 }
  21
  22 void Lock::AssertAcquired() const {
  23   DCHECK(owning_thread_ref_ == PlatformThread::CurrentRef());
  24 }
  25
  26 void Lock::CheckHeldAndUnmark() {
  27   DCHECK(owning_thread_ref_ == PlatformThread::CurrentRef());
  28   owning_thread_ref_ = PlatformThreadRef();
  29 }
  30
  31 void Lock::CheckUnheldAndMark() {
  32   DCHECK(owning_thread_ref_.is_null());
  33   owning_thread_ref_ = PlatformThread::CurrentRef();
  34 }
  35
  36 }  // namespace base
  37
  38 #endif  // DCHECK_IS_ON()