naiveproxy/base/test/launcher/test_launcher_tracer.cc
2018-12-09 21:59:24 -05:00

54 lines
1.6 KiB
C++

// 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/test/launcher/test_launcher_tracer.h"
#include "base/json/json_file_value_serializer.h"
#include "base/strings/stringprintf.h"
#include "base/values.h"
namespace base {
TestLauncherTracer::TestLauncherTracer()
: trace_start_time_(TimeTicks::Now()) {}
TestLauncherTracer::~TestLauncherTracer() = default;
void TestLauncherTracer::RecordProcessExecution(TimeTicks start_time,
TimeDelta duration) {
AutoLock lock(lock_);
Event event;
event.name = StringPrintf("process #%zu", events_.size());
event.timestamp = start_time;
event.duration = duration;
event.thread_id = PlatformThread::CurrentId();
events_.push_back(event);
}
bool TestLauncherTracer::Dump(const FilePath& path) {
AutoLock lock(lock_);
std::unique_ptr<ListValue> json_events(new ListValue);
for (const Event& event : events_) {
std::unique_ptr<DictionaryValue> json_event(new DictionaryValue);
json_event->SetString("name", event.name);
json_event->SetString("ph", "X");
json_event->SetInteger(
"ts", (event.timestamp - trace_start_time_).InMicroseconds());
json_event->SetInteger("dur", event.duration.InMicroseconds());
json_event->SetInteger("tid", event.thread_id);
// Add fake values required by the trace viewer.
json_event->SetInteger("pid", 0);
json_events->Append(std::move(json_event));
}
JSONFileValueSerializer serializer(path);
return serializer.Serialize(*json_events);
}
} // namespace base