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54 lines
1.6 KiB
C++
54 lines
1.6 KiB
C++
// Copyright 2016 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/test/launcher/test_launcher_tracer.h"
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#include "base/json/json_file_value_serializer.h"
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#include "base/strings/stringprintf.h"
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#include "base/values.h"
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namespace base {
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TestLauncherTracer::TestLauncherTracer()
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: trace_start_time_(TimeTicks::Now()) {}
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TestLauncherTracer::~TestLauncherTracer() = default;
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void TestLauncherTracer::RecordProcessExecution(TimeTicks start_time,
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TimeDelta duration) {
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AutoLock lock(lock_);
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Event event;
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event.name = StringPrintf("process #%zu", events_.size());
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event.timestamp = start_time;
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event.duration = duration;
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event.thread_id = PlatformThread::CurrentId();
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events_.push_back(event);
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}
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bool TestLauncherTracer::Dump(const FilePath& path) {
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AutoLock lock(lock_);
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std::unique_ptr<ListValue> json_events(new ListValue);
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for (const Event& event : events_) {
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std::unique_ptr<DictionaryValue> json_event(new DictionaryValue);
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json_event->SetString("name", event.name);
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json_event->SetString("ph", "X");
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json_event->SetInteger(
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"ts", (event.timestamp - trace_start_time_).InMicroseconds());
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json_event->SetInteger("dur", event.duration.InMicroseconds());
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json_event->SetInteger("tid", event.thread_id);
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// Add fake values required by the trace viewer.
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json_event->SetInteger("pid", 0);
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json_events->Append(std::move(json_event));
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}
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JSONFileValueSerializer serializer(path);
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return serializer.Serialize(*json_events);
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}
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} // namespace base
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