Move Mutex and Monitor from vm/ to platform/

runtime/vm/thread_win.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include <process.h>
 
 #include "platform/assert.h"
 #include "vm/thread.h"
 
 namespace dart {
@@ skipping 48 matching lines @@
     FATAL("Thread creation failed");
   }
   data_.tid_ = tid;
 }
 
 
 Thread::~Thread() {
   CloseHandle(reinterpret_cast<HANDLE>(data_.thread_handle_));
 }
 
-
-Mutex::Mutex() {
-  // Allocate unnamed semaphore with initial count 1 and max count 1.
-  data_.semaphore_ = CreateSemaphore(NULL, 1, 1, NULL);
-  if (data_.semaphore_ == NULL) {
-    FATAL("Mutex allocation failed");
-  }
-}
-
-
-Mutex::~Mutex() {
-  CloseHandle(data_.semaphore_);
-}
-
-
-void Mutex::Lock() {
-  DWORD result = WaitForSingleObject(data_.semaphore_, INFINITE);
-  if (result != WAIT_OBJECT_0) {
-    FATAL("Mutex lock failed");
-  }
-}
-
-
-bool Mutex::TryLock() {
-  // Attempt to pass the semaphore but return immediately.
-  DWORD result = WaitForSingleObject(data_.semaphore_, 0);
-  if (result == WAIT_OBJECT_0) {
-    return true;
-  }
-  if (result == WAIT_ABANDONED || result == WAIT_FAILED) {
-    FATAL("Mutex try lock failed");
-  }
-  ASSERT(result == WAIT_TIMEOUT);
-  return false;
-}
-
-
-void Mutex::Unlock() {
-  BOOL result = ReleaseSemaphore(data_.semaphore_, 1, NULL);
-  if (result == 0) {
-    FATAL("Mutex unlock failed");
-  }
-}
-
-
-Monitor::Monitor() {
-  InitializeCriticalSection(&data_.cs_);
-  InitializeConditionVariable(&data_.cond_);
-}
-
-
-Monitor::~Monitor() {
-  DeleteCriticalSection(&data_.cs_);
-}
-
-
-void Monitor::Enter() {
-  EnterCriticalSection(&data_.cs_);
-}
-
-
-void Monitor::Exit() {
-  LeaveCriticalSection(&data_.cs_);
-}
-
-
-Monitor::WaitResult Monitor::Wait(int64_t millis) {
-  Monitor::WaitResult retval = kNotified;
-  if (millis == 0) {
-    // Wait forever.
-    BOOL result = SleepConditionVariableCS(&data_.cond_, &data_.cs_, INFINITE);
-    if (result == 0) {
-      FATAL("Monitor::Wait failed");
-    }
-  } else {
-    BOOL result = SleepConditionVariableCS(&data_.cond_, &data_.cs_, millis);
-    if (result == 0) {
-      DWORD error = GetLastError();
-      // Windows condition variables should set error to WAIT_TIMEOUT
-      // but occationally sets it to ERROR_TIMEOUT for timeouts. On
-      // Windows 7 it seems to pretty consistently set it to
-      // ERROR_TIMEOUT.
-      if ((error == WAIT_TIMEOUT) || (error == ERROR_TIMEOUT)) {
-        retval = kTimedOut;
-      } else {
-        FATAL("Monitor::Wait failed");
-      }
-    }
-  }
-  return retval;
-}
-
-
-void Monitor::Notify() {
-  WakeConditionVariable(&data_.cond_);
-}
-
-
-void Monitor::NotifyAll() {
-  WakeAllConditionVariable(&data_.cond_);
-}
-
 }  // namespace dart