chromium/components/heap_profiling/multi_process/client_connection_manager.h

// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef COMPONENTS_HEAP_PROFILING_MULTI_PROCESS_CLIENT_CONNECTION_MANAGER_H_
#define COMPONENTS_HEAP_PROFILING_MULTI_PROCESS_CLIENT_CONNECTION_MANAGER_H_

#include <unordered_set>

#include "base/functional/callback_forward.h"
#include "base/functional/callback_helpers.h"
#include "base/gtest_prod_util.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/scoped_multi_source_observation.h"
#include "components/services/heap_profiling/public/mojom/heap_profiling_service.mojom.h"
#include "content/public/browser/browser_child_process_observer.h"
#include "content/public/browser/child_process_data.h"
#include "content/public/browser/render_process_host_creation_observer.h"
#include "content/public/browser/render_process_host_observer.h"

namespace content {
class RenderProcessHost;
}  // namespace content

namespace heap_profiling {

class Controller;
enum class Mode;

// This class is responsible for connecting HeapProfilingClients to the
// HeapProfilingService.
//   * It inherits from content::RenderProcessHostCreationObserver to listen for
//     the creation of the renderer processes.
//   * It registers itself as a content::BrowserChildProcessObserver to listen
//     for the creation of non-renderer processes.
// When a new process is created, it checks the current |Mode| to see whether
// the process should be profiled. If so, it grabs the HeapProfilingClient from
// the newly created process and connects it to the HeapProfilingService.
//
// This class is intended to be used from the browser/privileged process of the
// embedder.
//
// This class must be constructed/accessed/destroyed from the UI thread.
//
// This class can be subclassed for exactly one reason: to allow embedders to
// override AllowedToProfileRenderer in order to prevent incognito renderers
// from being profiled.
class ClientConnectionManager
    : public content::BrowserChildProcessObserver,
      public content::RenderProcessHostCreationObserver,
      public content::RenderProcessHostObserver { … };

}  // namespace heap_profiling

#endif  // COMPONENTS_HEAP_PROFILING_MULTI_PROCESS_CLIENT_CONNECTION_MANAGER_H_