child_process_host_impl.cc | Explore in Territory

// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/342213636): Remove this and spanify to fix the errors.
#pragma allow_unsafe_buffers
#endif

#include "content/browser/child_process_host_impl.h"

#include <limits>
#include <tuple>

#include "base/atomic_sequence_num.h"
#include "base/clang_profiling_buildflags.h"
#include "base/command_line.h"
#include "base/files/file.h"
#include "base/files/file_path.h"
#include "base/hash/hash.h"
#include "base/logging.h"
#include "base/memory/ptr_util.h"
#include "base/metrics/histogram_macros.h"
#include "base/numerics/safe_math.h"
#include "base/path_service.h"
#include "base/process/process_metrics.h"
#include "base/rand_util.h"
#include "base/synchronization/lock.h"
#include "base/task/single_thread_task_runner.h"
#include "build/build_config.h"
#include "content/common/content_constants_internal.h"
#include "content/common/pseudonymization_salt.h"
#include "content/public/browser/child_process_host_delegate.h"
#include "content/public/browser/content_browser_client.h"
#include "content/public/common/content_client.h"
#include "content/public/common/content_paths.h"
#include "content/public/common/content_switches.h"
#include "ipc/ipc.mojom.h"
#include "ipc/ipc_channel.h"
#include "ipc/ipc_channel_mojo.h"
#include "ipc/ipc_logging.h"
#include "ipc/message_filter.h"
#include "services/resource_coordinator/public/mojom/memory_instrumentation/constants.mojom.h"
#include "services/service_manager/public/cpp/interface_provider.h"

#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
#include "base/linux_util.h"
#elif BUILDFLAG(IS_MAC)
#include "base/apple/foundation_util.h"
#include "content/browser/mac_helpers.h"
#endif  // BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)

namespace {

// Global atomic to generate child process unique IDs.
base::AtomicSequenceNumber g_unique_id;

}  // namespace

namespace content {

ChildProcessHost::~ChildProcessHost() = default;

// static
std::unique_ptr<ChildProcessHost> ChildProcessHost::Create(
    ChildProcessHostDelegate* delegate,
    IpcMode ipc_mode) { … }

// static
base::FilePath ChildProcessHost::GetChildPath(int flags) { … }

ChildProcessHostImpl::ChildProcessHostImpl(ChildProcessHostDelegate* delegate,
                                           IpcMode ipc_mode)
    : … { … }

ChildProcessHostImpl::~ChildProcessHostImpl() { … }

#if BUILDFLAG(CONTENT_ENABLE_LEGACY_IPC)
void ChildProcessHostImpl::AddFilter(IPC::MessageFilter* filter) {
  filters_.push_back(filter);

  if (channel_) {
    filter->OnFilterAdded(channel_.get());
  }
}
#endif

void ChildProcessHostImpl::BindReceiver(mojo::GenericPendingReceiver receiver) { … }

#if BUILDFLAG(IS_CHROMEOS_ASH)
void ChildProcessHostImpl::ReinitializeLogging(
    uint32_t logging_dest,
    base::ScopedFD log_file_descriptor) {
  auto logging_settings = mojom::LoggingSettings::New();
  logging_settings->logging_dest = logging_dest;
  logging_settings->log_file_descriptor =
      mojo::PlatformHandle(std::move(log_file_descriptor));
  child_process()->ReinitializeLogging(std::move(logging_settings));
}
#endif  // BUILDFLAG(IS_CHROMEOS_ASH)

base::Process& ChildProcessHostImpl::GetPeerProcess() { … }

void ChildProcessHostImpl::ForceShutdown() { … }

std::optional<mojo::OutgoingInvitation>&
ChildProcessHostImpl::GetMojoInvitation() { … }

void ChildProcessHostImpl::CreateChannelMojo() { … }

bool ChildProcessHostImpl::InitChannel() { … }

void ChildProcessHostImpl::OnDisconnectedFromChildProcess() { … }

bool ChildProcessHostImpl::IsChannelOpening() { … }

bool ChildProcessHostImpl::Send(IPC::Message* message) { … }

// static
int ChildProcessHost::GenerateChildProcessUniqueId() { … }

uint64_t ChildProcessHostImpl::ChildProcessUniqueIdToTracingProcessId(
    int child_process_id) { … }

void ChildProcessHostImpl::Ping(PingCallback callback) { … }

void ChildProcessHostImpl::BindHostReceiver(
    mojo::GenericPendingReceiver receiver) { … }

bool ChildProcessHostImpl::OnMessageReceived(const IPC::Message& msg) { … }

void ChildProcessHostImpl::OnChannelConnected(int32_t peer_pid) { … }

void ChildProcessHostImpl::OnChannelError() { … }

void ChildProcessHostImpl::OnBadMessageReceived(const IPC::Message& message) { … }

#if BUILDFLAG(CLANG_PROFILING_INSIDE_SANDBOX)
void ChildProcessHostImpl::DumpProfilingData(base::OnceClosure callback) {
  child_process_->WriteClangProfilingProfile(std::move(callback));
}

void ChildProcessHostImpl::SetProfilingFile(base::File file) {
  child_process_->SetProfilingFile(std::move(file));
}
#endif

#if BUILDFLAG(IS_ANDROID)
// Notifies the child process of memory pressure level.
void ChildProcessHostImpl::NotifyMemoryPressureToChildProcess(
    base::MemoryPressureListener::MemoryPressureLevel level) {
  child_process()->OnMemoryPressure(level);
}
#endif

void ChildProcessHostImpl::SetBatterySaverMode(
    bool battery_saver_mode_enabled) { … }

}  // namespace content
chromium/content/browser/child_process_host_impl.cc
