blob: dfbd33f3a9a7b490e5b6ee054de1c86bf9ae05c0 [file] [log] [blame]
// Copyright 2015 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 <memory>
#include "base/trace_event/trace_event_impl.h"
#include "base/values.h"
#include "content/common/content_export.h"
namespace content {
class BackgroundTracingConfig;
// BackgroundTracingManager is used on the browser process to trigger the
// collection of trace data and upload the results. Only the browser UI thread
// is allowed to interact with the BackgroundTracingManager. All callbacks are
// called on the UI thread.
class BackgroundTracingManager {
CONTENT_EXPORT static BackgroundTracingManager* GetInstance();
// ReceiveCallback will be called on the UI thread every time the
// BackgroundTracingManager finalizes a trace. The first parameter of this
// callback is the trace data. The second is metadata that was generated and
// embedded into the trace. The third is a callback to notify the
// BackgroundTracingManager that you've finished processing the trace data
// and whether we were successful or not.
// Example:
// void Upload(const scoped_refptr<base::RefCountedString>& data,
// FinishedProcessingCallback done_callback) {
// base::PostTaskWithTraitsAndReply(
// FROM_HERE, {base::MayBlock(), base::TaskPriority::BEST_EFFORT},
// base::BindOnce(&DoUploadInBackground, data),
// std::move(done_callback));
// }
using FinishedProcessingCallback = base::OnceCallback<void(bool success)>;
using ReceiveCallback =
base::RepeatingCallback<void(const scoped_refptr<base::RefCountedString>&,
std::unique_ptr<const base::DictionaryValue>,
// Set the triggering rules for when to start recording.
// In preemptive mode, recording begins immediately and any calls to
// TriggerNamedEvent() will potentially trigger the trace to finalize and get
// uploaded to the specified upload_sink. Once the trace has been uploaded,
// tracing will be enabled again.
// In reactive mode, recording begins when TriggerNamedEvent() is called, and
// continues until either the next call to TriggerNamedEvent, or a timeout
// occurs. Tracing will not be re-enabled after the trace is finalized and
// uploaded to the upload_sink.
// Calls to SetActiveScenario() with a config will fail if tracing is
// currently on. Use WhenIdle to register a callback to get notified when
// the manager is idle and a config can be set again.
enum DataFiltering {
virtual bool SetActiveScenario(
std::unique_ptr<BackgroundTracingConfig> config,
ReceiveCallback receive_callback,
DataFiltering data_filtering) = 0;
// Notifies the caller when the manager is idle (not recording or uploading),
// so that a call to SetActiveScenario() is likely to succeed.
typedef base::Callback<void()> IdleCallback;
virtual void WhenIdle(IdleCallback idle_callback) = 0;
typedef base::Callback<void(bool)> StartedFinalizingCallback;
typedef int TriggerHandle;
// Notifies that a manual trigger event has occurred, and we may need to
// either begin recording or finalize the trace, depending on the config.
// If the trigger specified isn't active in the config, this will do nothing.
virtual void TriggerNamedEvent(
TriggerHandle trigger_handle,
StartedFinalizingCallback started_callback) = 0;
// Registers a manual trigger handle, and returns a TriggerHandle which can
// be passed to DidTriggerHappen().
virtual TriggerHandle RegisterTriggerType(const char* trigger_name) = 0;
virtual bool HasActiveScenario() = 0;
// For tests
virtual void AbortScenario() = 0;
virtual void InvalidateTriggerHandlesForTesting() = 0;
virtual void FireTimerForTesting() = 0;
virtual ~BackgroundTracingManager() {}
} // namespace content