1// Copyright 2014 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "config.h"
6#include "platform/scheduler/TracedTask.h"
7
8namespace blink {
9
10volatile int TracedTask::s_nextFlowTraceID = 0;
11
12void TracedTask::run() const
13{
14    TRACE_EVENT_FLOW_END0("blink", m_traceName, MANGLE(m_flowTraceID));
15
16    TRACE_EVENT2("blink", m_traceName,
17        "src_file", m_location.fileName(),
18        "src_func", m_location.functionName());
19
20    m_task();
21}
22
23TracedTask::TracedTask(const Task& task, const TraceLocation& location, const char* traceName)
24    : m_task(task)
25    , m_location(location)
26    , m_traceName(traceName)
27{
28    bool tracingEnabled;
29    TRACE_EVENT_CATEGORY_GROUP_ENABLED("blink", &tracingEnabled);
30
31    if (tracingEnabled) {
32        // atomicIncrement is slow so we only do it if tracing is enabled
33        m_flowTraceID = static_cast<uint64_t>(atomicIncrement(&s_nextFlowTraceID));
34
35        TRACE_EVENT_FLOW_BEGIN2("blink", m_traceName, MANGLE(m_flowTraceID),
36        "src_file", m_location.fileName(),
37        "src_func", m_location.functionName());
38    }
39}
40
41} // namespace blink
42