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 #if !defined(NDEBUG) || defined(DCHECK_ALWAYS_ON)
  10
  11 #include "base/synchronization/lock.h"
  12 #include "base/logging.h"
  13
  14 namespace base {
  15
  16 Lock::Lock() : lock_() {
  17 }
  18
  19 Lock::~Lock() {
  20   DCHECK(owning_thread_ref_.is_null());
  21 }
  22
  23 void Lock::AssertAcquired() const {
  24   DCHECK(owning_thread_ref_ == PlatformThread::CurrentRef());
  25 }
  26
  27 void Lock::CheckHeldAndUnmark() {
  28   DCHECK(owning_thread_ref_ == PlatformThread::CurrentRef());
  29   owning_thread_ref_ = PlatformThreadRef();
  30 }
  31
  32 void Lock::CheckUnheldAndMark() {
  33   DCHECK(owning_thread_ref_.is_null());
  34   owning_thread_ref_ = PlatformThread::CurrentRef();
  35 }
  36
  37 }  // namespace base
  38
  39 #endif  // !NDEBUG || DCHECK_ALWAYS_ON