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// 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/trace_event/auto_open_close_event.h"
#include "base/macros.h"
#include "base/time/time.h"
#include "base/trace_event/trace_event.h"
namespace base {
namespace trace_event {
AutoOpenCloseEvent::AutoOpenCloseEvent(AutoOpenCloseEvent::Type type,
const char* category, const char* event_name):
category_(category),
event_name_(event_name),
weak_factory_(this) {
base::trace_event::TraceLog::GetInstance()->AddAsyncEnabledStateObserver(
weak_factory_.GetWeakPtr());
}
AutoOpenCloseEvent::~AutoOpenCloseEvent() {
DCHECK(thread_checker_.CalledOnValidThread());
base::trace_event::TraceLog::GetInstance()->RemoveAsyncEnabledStateObserver(
this);
}
void AutoOpenCloseEvent::Begin() {
DCHECK(thread_checker_.CalledOnValidThread());
start_time_ = base::TimeTicks::Now();
TRACE_EVENT_ASYNC_BEGIN_WITH_TIMESTAMP0(
category_, event_name_, static_cast<void*>(this), start_time_);
}
void AutoOpenCloseEvent::End() {
DCHECK(thread_checker_.CalledOnValidThread());
TRACE_EVENT_ASYNC_END0(category_, event_name_, static_cast<void*>(this));
start_time_ = base::TimeTicks();
}
void AutoOpenCloseEvent::OnTraceLogEnabled() {
DCHECK(thread_checker_.CalledOnValidThread());
if (start_time_.ToInternalValue() != 0)
TRACE_EVENT_ASYNC_BEGIN_WITH_TIMESTAMP0(
category_, event_name_, static_cast<void*>(this), start_time_);
}
void AutoOpenCloseEvent::OnTraceLogDisabled() {}
} // namespace trace_event
} // namespace base
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