chrome/profiling/memlog_connection_manager.h

// Copyright 2017 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.

#ifndef CHROME_PROFILING_MEMLOG_CONNECTION_MANAGER_H_
#define CHROME_PROFILING_MEMLOG_CONNECTION_MANAGER_H_

#include <string>
#include <vector>

#include "base/containers/flat_map.h"
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.h"
#include "base/process/process_handle.h"
#include "base/synchronization/lock.h"
#include "base/threading/thread.h"
#include "base/values.h"
#include "build/build_config.h"
#include "chrome/common/profiling/profiling_service.mojom.h"
#include "chrome/profiling/allocation_event.h"
#include "chrome/profiling/allocation_tracker.h"
#include "chrome/profiling/backtrace_storage.h"
#include "mojo/edk/embedder/scoped_platform_handle.h"
#include "services/resource_coordinator/public/mojom/memory_instrumentation/memory_instrumentation.mojom.h"

namespace base {

class SequencedTaskRunner;

}  // namespace base

namespace profiling {

using VmRegions =
    std::unordered_map<base::ProcessId,
                       std::vector<memory_instrumentation::mojom::VmRegionPtr>>;

// Manages all connections and logging for each process. Pipes are supplied by
// the pipe server and this class will connect them to a parser and logger.
//
// Note |backtrace_storage| must outlive MemlogConnectionManager.
//
// This object is constructed on the UI thread, but the rest of the usage
// (including deletion) is on the IO thread.
class MemlogConnectionManager {
  using DumpProcessesForTracingCallback = memory_instrumentation::mojom::
      HeapProfiler::DumpProcessesForTracingCallback;

 public:
  MemlogConnectionManager();