New cache for the activity tracker.

base/debug/activity_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/debug/activity_tracker.h"
 
 #include <memory>
 
 #include "base/bind.h"
 #include "base/files/file.h"
 #include "base/files/file_util.h"
 #include "base/files/memory_mapped_file.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/memory/ptr_util.h"
 #include "base/pending_task.h"
+#include "base/rand_util.h"
 #include "base/synchronization/condition_variable.h"
 #include "base/synchronization/lock.h"
 #include "base/synchronization/spin_wait.h"
+#include "base/threading/platform_thread.h"
 #include "base/threading/simple_thread.h"
 #include "base/time/time.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace base {
 namespace debug {
 
 namespace {
 
 class TestActivityTracker : public ThreadActivityTracker {
@@ skipping 36 matching lines @@
     if (!global_tracker)
       return 0;
     return global_tracker->thread_tracker_count_.load(
         std::memory_order_relaxed);
   }
 
   size_t GetGlobalInactiveTrackerCount() {
     GlobalActivityTracker* global_tracker = GlobalActivityTracker::Get();
     if (!global_tracker)
       return 0;
-    return global_tracker->available_memories_count_.load(
-        std::memory_order_relaxed);
+    return global_tracker->available_memories_.used();
   }
 
   static void DoNothing() {}
 };
 
 TEST_F(ActivityTrackerTest, PushPopTest) {
   std::unique_ptr<ThreadActivityTracker> tracker = CreateActivityTracker();
   ActivitySnapshot snapshot;
 
   ASSERT_TRUE(tracker->Snapshot(&snapshot));
@@ skipping 193 matching lines @@
   EXPECT_EQ(starting_inactive, GetGlobalInactiveTrackerCount());
 
   t2.Exit();
   t2.Join();
   EXPECT_EQ(starting_active, GetGlobalActiveTrackerCount());
   EXPECT_EQ(starting_inactive + 1, GetGlobalInactiveTrackerCount());
 }
 
 }  // namespace debug
 }  // namespace base