Rename CancellationFlag to AtomicFlag.

base/task_scheduler/task_tracker_unittest.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/task_scheduler/task_tracker.h"
 
 #include <stdint.h>
 
 #include <memory>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/sequenced_task_runner.h"
 #include "base/single_thread_task_runner.h"
+#include "base/synchronization/atomic_flag.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/task_scheduler/scheduler_lock.h"
 #include "base/task_scheduler/task.h"
 #include "base/task_scheduler/task_traits.h"
 #include "base/task_scheduler/test_utils.h"
 #include "base/test/test_simple_task_runner.h"
 #include "base/threading/platform_thread.h"
 #include "base/threading/sequenced_task_runner_handle.h"
 #include "base/threading/simple_thread.h"
 #include "base/threading/thread_restrictions.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace base {
 namespace internal {
 
 namespace {
 
 constexpr size_t kLoadTestNumIterations = 100;
 
 // Calls TaskTracker::Shutdown() asynchronously.
 class ThreadCallingShutdown : public SimpleThread {
  public:
   explicit ThreadCallingShutdown(TaskTracker* tracker)
-      : SimpleThread("ThreadCallingShutdown"),
-        tracker_(tracker),
-        has_returned_(WaitableEvent::ResetPolicy::MANUAL,
-                      WaitableEvent::InitialState::NOT_SIGNALED) {}
+      : SimpleThread("ThreadCallingShutdown"), tracker_(tracker) {}
 
   // Returns true once the async call to Shutdown() has returned.
-  bool has_returned() { return has_returned_.IsSignaled(); }
+  bool has_returned() { return has_returned_.IsSet(); }
 
  private:
   void Run() override {
     tracker_->Shutdown();
-    has_returned_.Signal();
+    has_returned_.Set();
   }
 
   TaskTracker* const tracker_;
-  WaitableEvent has_returned_;
+  AtomicFlag has_returned_;
 
   DISALLOW_COPY_AND_ASSIGN(ThreadCallingShutdown);
 };
 
 class ThreadPostingAndRunningTask : public SimpleThread {
  public:
   enum class Action {
     WILL_POST,
     RUN,
     WILL_POST_AND_RUN,
@@ skipping 527 matching lines @@
   VERIFY_ASYNC_SHUTDOWN_IN_PROGRESS();
 
   // Unblock shutdown by running |block_shutdown_task|.
   tracker_.RunTask(block_shutdown_task.get());
   EXPECT_EQ(kLoadTestNumIterations + 1, NumTasksExecuted());
   WAIT_FOR_ASYNC_SHUTDOWN_COMPLETED();
 }
 
 }  // namespace internal
 }  // namespace base