Remove ALL usage of CriticalSectionWrapper.

webrtc/system_wrappers/source/rw_lock_winxp_win.cc

-/*
- *  Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree. An additional intellectual property rights grant can be found
- *  in the file PATENTS.  All contributing project authors may
- *  be found in the AUTHORS file in the root of the source tree.
- */
-
-#include "webrtc/system_wrappers/source/rw_lock_winxp_win.h"
-
-namespace webrtc {
-namespace {
-class ScopedLock {
- public:
-  ScopedLock(CRITICAL_SECTION* lock) : lock_(lock) {
-    EnterCriticalSection(lock_);
-  }
-  ~ScopedLock() {
-    LeaveCriticalSection(lock_);
-  }
- private:
-  CRITICAL_SECTION* const lock_;
-};
-}
-
-RWLockWinXP::RWLockWinXP() {
-  InitializeCriticalSection(&critical_section_);
-}
-
-RWLockWinXP::~RWLockWinXP() {
-  DeleteCriticalSection(&critical_section_);
-}
-
-void RWLockWinXP::AcquireLockExclusive() {
-  ScopedLock cs(&critical_section_);
-  if (writer_active_ || readers_active_ > 0) {
-    ++writers_waiting_;
-    while (writer_active_ || readers_active_ > 0) {
-      write_condition_.SleepCS(&critical_section_);
-    }
-    --writers_waiting_;
-  }
-  writer_active_ = true;
-}
-
-void RWLockWinXP::ReleaseLockExclusive() {
-  ScopedLock cs(&critical_section_);
-  writer_active_ = false;
-  if (writers_waiting_ > 0) {
-    write_condition_.Wake();
-  } else if (readers_waiting_ > 0) {
-    read_condition_.WakeAll();
-  }
-}
-
-void RWLockWinXP::AcquireLockShared() {
-  ScopedLock cs(&critical_section_);
-  if (writer_active_ || writers_waiting_ > 0) {
-    ++readers_waiting_;
-
-    while (writer_active_ || writers_waiting_ > 0) {
-      read_condition_.SleepCS(&critical_section_);
-    }
-    --readers_waiting_;
-  }
-  ++readers_active_;
-}
-
-void RWLockWinXP::ReleaseLockShared() {
-  ScopedLock cs(&critical_section_);
-  --readers_active_;
-  if (readers_active_ == 0 && writers_waiting_ > 0) {
-    write_condition_.Wake();
-  }
-}
-
-}  // namespace webrtc