94 lines
2.7 KiB
C++
94 lines
2.7 KiB
C++
// Copyright 2014 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/metrics/user_metrics.h"
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#include <stddef.h>
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#include <vector>
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#include "base/bind.h"
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#include "base/lazy_instance.h"
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#include "base/location.h"
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#include "base/macros.h"
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#include "base/threading/thread_checker.h"
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#include "base/time/time.h"
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#include "base/trace_event/trace_event.h"
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namespace base {
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namespace {
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LazyInstance<std::vector<ActionCallback>>::DestructorAtExit g_callbacks =
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LAZY_INSTANCE_INITIALIZER;
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LazyInstance<scoped_refptr<SingleThreadTaskRunner>>::DestructorAtExit
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g_task_runner = LAZY_INSTANCE_INITIALIZER;
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} // namespace
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void RecordAction(const UserMetricsAction& action) {
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RecordComputedAction(action.str_);
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}
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void RecordComputedAction(const std::string& action) {
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RecordComputedActionAt(action, TimeTicks::Now());
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}
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void RecordComputedActionSince(const std::string& action,
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TimeDelta time_since) {
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RecordComputedActionAt(action, TimeTicks::Now() - time_since);
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}
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void RecordComputedActionAt(const std::string& action, TimeTicks action_time) {
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TRACE_EVENT_INSTANT1("ui", "UserEvent", TRACE_EVENT_SCOPE_GLOBAL, "action",
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action);
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if (!g_task_runner.Get()) {
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DCHECK(g_callbacks.Get().empty());
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return;
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}
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if (!g_task_runner.Get()->BelongsToCurrentThread()) {
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g_task_runner.Get()->PostTask(
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FROM_HERE, BindOnce(&RecordComputedActionAt, action, action_time));
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return;
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}
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for (const ActionCallback& callback : g_callbacks.Get()) {
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callback.Run(action, action_time);
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}
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}
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void AddActionCallback(const ActionCallback& callback) {
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// Only allow adding a callback if the task runner is set.
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DCHECK(g_task_runner.Get());
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DCHECK(g_task_runner.Get()->BelongsToCurrentThread());
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g_callbacks.Get().push_back(callback);
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}
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void RemoveActionCallback(const ActionCallback& callback) {
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DCHECK(g_task_runner.Get());
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DCHECK(g_task_runner.Get()->BelongsToCurrentThread());
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std::vector<ActionCallback>* callbacks = g_callbacks.Pointer();
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for (size_t i = 0; i < callbacks->size(); ++i) {
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if ((*callbacks)[i] == callback) {
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callbacks->erase(callbacks->begin() + i);
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return;
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}
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}
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}
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void SetRecordActionTaskRunner(
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scoped_refptr<SingleThreadTaskRunner> task_runner) {
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DCHECK(task_runner->BelongsToCurrentThread());
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DCHECK(!g_task_runner.Get() || g_task_runner.Get()->BelongsToCurrentThread());
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g_task_runner.Get() = task_runner;
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}
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scoped_refptr<SingleThreadTaskRunner> GetRecordActionTaskRunner() {
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if (g_task_runner.IsCreated())
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return g_task_runner.Get();
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return nullptr;
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}
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} // namespace base
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