third_party/blink/renderer/core/probe/core_probes.h

/*
 * Copyright (C) 2010 Google Inc. All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_PROBE_CORE_PROBES_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_PROBE_CORE_PROBES_H_

#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/dom/document.h"
#include "third_party/blink/renderer/core/execution_context/execution_context.h"
#include "third_party/blink/renderer/core/frame/ad_tracker.h"
#include "third_party/blink/renderer/core/frame/local_frame.h"
#include "third_party/blink/renderer/platform/loader/fetch/resource.h"

namespace network {
namespace mojom {
namespace blink {
class WebSocketHandshakeResponse;
class WebSocketHandshakeRequest;
}  // namespace blink
}  // namespace mojom
}  // namespace network

namespace blink {

class CoreProbeSink;
class ThreadDebugger;

namespace probe {

class AsyncTaskId;

class CORE_EXPORT ProbeBase {
  STACK_ALLOCATED();

 public:
  base::TimeTicks CaptureStartTime() const;
  base::TimeTicks CaptureEndTime() const;
  base::TimeDelta Duration() const;

 private:
  mutable base::TimeTicks start_time_;
  mutable base::TimeTicks end_time_;
};

// Tracks execution of a (previously scheduled) asynchronous task. An instance
// should exist for the full duration of the task's execution.
class CORE_EXPORT AsyncTask {
  STACK_ALLOCATED();

 public:
  // Args:
  //   context: The ExecutionContext in which the task is executed.
  //   task: An identifier for the AsyncTask.
  //   step: A nullptr indicates a task that is not recurring. A non-null value
  //     indicates a recurring task with the value used for tracing events.
  //   enabled: Whether the task is asynchronous. If false, the task is not
  //     reported to the debugger and AdTracker.
  AsyncTask(ExecutionContext* context,
            AsyncTaskId* task,
            const char* step = nullptr,
            bool enabled = true);
  ~AsyncTask();

 private:
  ThreadDebugger* debugger_;
  AsyncTaskId* task_;
  bool recurring_;

  // This persistent is safe since the class is STACK_ALLOCATED.
  Persistent<AdTracker> ad_tracker_;
};

// Called from generated instrumentation code.
inline CoreProbeSink* ToCoreProbeSink(LocalFrame* frame) {
  return frame ? frame->GetProbeSink() : nullptr;
}

inline CoreProbeSink* ToCoreProbeSink(ExecutionContext* context) {
  return context ? context->GetProbeSink() : nullptr;
}

inline CoreProbeSink* ToCoreProbeSink(Document& document) {
  return ToCoreProbeSink(document.GetExecutionContext());
}

inline CoreProbeSink* ToCoreProbeSink(Document* document) {
  return document ? ToCoreProbeSink(document->GetExecutionContext()) : nullptr;
}

inline CoreProbeSink* ToCoreProbeSink(CoreProbeSink* sink) {
  return sink;
}

inline CoreProbeSink* ToCoreProbeSink(Node* node) {
  return node ? ToCoreProbeSink(node->GetDocument()) : nullptr;
}

inline CoreProbeSink* ToCoreProbeSink(EventTarget* event_target) {
  return event_target ? ToCoreProbeSink(event_target->GetExecutionContext())
                      : nullptr;
}

CORE_EXPORT void AsyncTaskScheduled(ExecutionContext*,
                                    const StringView& name,
                                    AsyncTaskId*);
CORE_EXPORT void AsyncTaskScheduledBreakable(ExecutionContext*,
                                             const char* name,
                                             AsyncTaskId*);
CORE_EXPORT void AsyncTaskCanceled(ExecutionContext*, AsyncTaskId*);
CORE_EXPORT void AsyncTaskCanceledBreakable(ExecutionContext*,
                                            const char* name,
                                            AsyncTaskId*);
CORE_EXPORT void AllAsyncTasksCanceled(ExecutionContext*);

}  // namespace probe
}  // namespace blink

#include "third_party/blink/renderer/core/core_probes_inl.h"

#endif  // !defined(CoreProbes_h)