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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 
8 namespace blink {
9 
10 volatile int TracedTask::s_nextFlowTraceID = 0;
11 
run() const12 void 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 
TracedTask(const Task & task,const TraceLocation & location,const char * traceName)23 TracedTask::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