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//
// Copyright 2014 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 "config.h"
#include "core/inspector/InspectorTracingAgent.h"
#include "core/inspector/IdentifiersFactory.h"
#include "core/inspector/InspectorClient.h"
#include "core/inspector/InspectorState.h"
#include "platform/TraceEvent.h"
namespace WebCore {
namespace TracingAgentState {
const char sessionId[] = "sessionId";
}
namespace {
const char devtoolsMetadataEventCategory[] = TRACE_DISABLED_BY_DEFAULT("devtools.timeline");
}
InspectorTracingAgent::InspectorTracingAgent(InspectorClient* client)
: InspectorBaseAgent<InspectorTracingAgent>("Tracing")
, m_layerTreeId(0)
, m_client(client)
{
}
void InspectorTracingAgent::restore()
{
emitMetadataEvents();
}
void InspectorTracingAgent::start(ErrorString*, const String& categoryFilter, const String&, const double*, String* outSessionId)
{
m_state->setString(TracingAgentState::sessionId, IdentifiersFactory::createIdentifier());
m_client->enableTracing(categoryFilter);
emitMetadataEvents();
*outSessionId = sessionId();
}
String InspectorTracingAgent::sessionId()
{
return m_state->getString(TracingAgentState::sessionId);
}
void InspectorTracingAgent::emitMetadataEvents()
{
TRACE_EVENT_INSTANT1(devtoolsMetadataEventCategory, "TracingStartedInPage", "sessionId", sessionId().utf8());
if (m_layerTreeId)
setLayerTreeId(m_layerTreeId);
}
void InspectorTracingAgent::setLayerTreeId(int layerTreeId)
{
m_layerTreeId = layerTreeId;
TRACE_EVENT_INSTANT2(devtoolsMetadataEventCategory, "SetLayerTreeId", "sessionId", sessionId().utf8(), "layerTreeId", m_layerTreeId);
}
}
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