blob: e4114fe61055e777a550a1ecc720ef6d77e30e2f [file] [log] [blame]
// 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.
#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/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/interfaces/memory_instrumentation/memory_instrumentation.mojom.h"
namespace base {
class SequencedTaskRunner;
} // namespace base
namespace profiling {
// 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 {
// Shared types for the dump-type-specific args structures.
struct DumpArgs {
DumpArgs(DumpArgs&&) noexcept;
friend MemlogConnectionManager;
// This lock keeps the backtrace atoms alive throughout the dumping
// process. It will be initialized by DumpProcess.
BacktraceStorage::Lock backtrace_storage_lock;
// Dumping is asynchronous so will not be complete when this function
// returns. The dump is complete when the callback provided in the args is
// fired.
void DumpProcessesForTracing(
bool keep_small_allocations,
bool strip_path_from_mapped_files,
mojom::ProfilingService::DumpProcessesForTracingCallback callback,
memory_instrumentation::mojom::GlobalMemoryDumpPtr dump);
void OnNewConnection(base::ProcessId pid,
mojom::ProfilingClientPtr client,
mojo::ScopedHandle sender_pipe_end,
mojo::ScopedHandle receiver_pipe_end,
mojom::ProcessType process_type,
profiling::mojom::StackMode stack_mode);
std::vector<base::ProcessId> GetConnectionPids();
struct Connection;
struct DumpProcessesForTracingTracking;
void DoDumpOneProcessForTracing(
scoped_refptr<DumpProcessesForTracingTracking> tracking,
base::ProcessId pid,
mojom::ProcessType process_type,
bool keep_small_allocations,
bool strip_path_from_mapped_files,
bool success,
AllocationCountMap counts,
AllocationTracker::ContextMap context,
AllocationTracker::AddressToStringMap mapped_strings);
// Notification that a connection is complete. Unlike OnNewConnection which
// is signaled by the pipe server, this is signaled by the allocation tracker
// to ensure that the pipeline for this process has been flushed of all
// messages.
void OnConnectionComplete(base::ProcessId pid);
// Reports the ProcessTypes of the processes being profiled.
void ReportMetrics();
// These thunks post the request back to the given thread.
static void OnConnectionCompleteThunk(
scoped_refptr<base::SequencedTaskRunner> main_loop,
base::WeakPtr<MemlogConnectionManager> connection_manager,
base::ProcessId process_id);
BacktraceStorage backtrace_storage_;
// Next ID to use for a barrier request. This is incremented for each use
// to ensure barrier IDs are unique.
uint32_t next_barrier_id_ = 1;
// Maps process ID to the connection information for it.
base::flat_map<base::ProcessId, std::unique_ptr<Connection>> connections_;
base::Lock connections_lock_;
// Every 24-hours, reports the types of profiled processes.
base::RepeatingTimer metrics_timer_;
// Must be last.
base::WeakPtrFactory<MemlogConnectionManager> weak_factory_;
} // namespace profiling