1
    2
    3
    4
    5
    6
    7
    8
    9
   10
   11
   12
   13
   14
   15
   16
   17
   18
   19
   20
   21
   22
   23
   24
   25
   26
   27
   28
   29
   30
   31
   32
   33
   34
   35
   36
   37
   38
   39
   40
   41
   42
   43
   44
   45
   46
   47
   48
   49
   50
   51
   52
   53
   54
   55
   56
   57
   58
   59
   60
   61
   62
   63
   64
   65
   66
   67
   68
   69
   70
   71
   72
   73
   74
   75
   76
   77
   78
   79
   80
   81
   82
   83
   84
   85
   86
   87
   88
   89
   90
   91
   92
   93
   94
   95
   96
   97
   98
   99
  100
  101
  102
  103
  104
  105
  106
  107
  108
  109
  110
  111
  112
  113
  114
  115
  116
  117
  118
  119
  120
  121
  122
  123
  124
  125
  126
  127
  128
  129
  130
  131
  132
  133
  134
  135
  136
  137
  138
  139
  140
  141
  142
  143
  144
  145
  146
  147
  148
  149
  150
  151
  152
  153
  154
  155
  156
  157


ipc / ipc_perftest_util.cc [blame]

// Copyright 2017 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/351564777): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif

#include "ipc/ipc_perftest_util.h"

#include <tuple>

#include "base/logging.h"
#include "base/run_loop.h"
#include "base/task/single_thread_task_runner.h"
#include "build/build_config.h"
#include "ipc/ipc_channel_proxy.h"
#include "ipc/ipc_perftest_messages.h"
#include "mojo/core/embedder/embedder.h"
#include "mojo/core/test/multiprocess_test_helper.h"

namespace IPC {

scoped_refptr<base::SingleThreadTaskRunner> GetIOThreadTaskRunner() {
  scoped_refptr<base::TaskRunner> runner = mojo::core::GetIOTaskRunner();
  return scoped_refptr<base::SingleThreadTaskRunner>(
      static_cast<base::SingleThreadTaskRunner*>(runner.get()));
}

ChannelReflectorListener::ChannelReflectorListener() : channel_(nullptr) {
  VLOG(1) << "Client listener up";
}

ChannelReflectorListener::~ChannelReflectorListener() {
  VLOG(1) << "Client listener down";
}

void ChannelReflectorListener::Init(Sender* channel,
                                    base::OnceClosure quit_closure) {
  DCHECK(!channel_);
  channel_ = channel;
  quit_closure_ = std::move(quit_closure);
}

bool ChannelReflectorListener::OnMessageReceived(const Message& message) {
  CHECK(channel_);
  bool handled = true;
  IPC_BEGIN_MESSAGE_MAP(ChannelReflectorListener, message)
    IPC_MESSAGE_HANDLER(TestMsg_Hello, OnHello)
    IPC_MESSAGE_HANDLER(TestMsg_Ping, OnPing)
    IPC_MESSAGE_HANDLER(TestMsg_SyncPing, OnSyncPing)
    IPC_MESSAGE_HANDLER(TestMsg_Quit, OnQuit)
    IPC_MESSAGE_UNHANDLED(handled = false)
  IPC_END_MESSAGE_MAP()
  return handled;
}

void ChannelReflectorListener::OnHello() {
  channel_->Send(new TestMsg_Hello);
}

void ChannelReflectorListener::OnPing(const std::string& payload) {
  channel_->Send(new TestMsg_Ping(payload));
}

void ChannelReflectorListener::OnSyncPing(const std::string& payload,
                                          std::string* response) {
  *response = payload;
}

void ChannelReflectorListener::OnQuit() {
  std::move(quit_closure_).Run();
}

void ChannelReflectorListener::Send(IPC::Message* message) {
  channel_->Send(message);
}

LockThreadAffinity::LockThreadAffinity(int cpu_number)
    : affinity_set_ok_(false) {
#if BUILDFLAG(IS_WIN)
  const DWORD_PTR thread_mask = static_cast<DWORD_PTR>(1) << cpu_number;
  old_affinity_ = SetThreadAffinityMask(GetCurrentThread(), thread_mask);
  affinity_set_ok_ = old_affinity_ != 0;
#elif BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
  cpu_set_t cpuset;
  CPU_ZERO(&cpuset);
  CPU_SET(cpu_number, &cpuset);
  auto get_result = sched_getaffinity(0, sizeof(old_cpuset_), &old_cpuset_);
  DCHECK_EQ(0, get_result);
  auto set_result = sched_setaffinity(0, sizeof(cpuset), &cpuset);
  // Check for get_result failure, even though it should always succeed.
  affinity_set_ok_ = (set_result == 0) && (get_result == 0);
#endif
  if (!affinity_set_ok_)
    LOG(WARNING) << "Failed to set thread affinity to CPU " << cpu_number;
}

LockThreadAffinity::~LockThreadAffinity() {
  if (!affinity_set_ok_)
    return;
#if BUILDFLAG(IS_WIN)
  auto set_result = SetThreadAffinityMask(GetCurrentThread(), old_affinity_);
  DCHECK_NE(0u, set_result);
#elif BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
  auto set_result = sched_setaffinity(0, sizeof(old_cpuset_), &old_cpuset_);
  DCHECK_EQ(0, set_result);
#endif
}

MojoPerfTestClient::MojoPerfTestClient()
    : listener_(new ChannelReflectorListener()) {
  mojo::core::test::MultiprocessTestHelper::ChildSetup();
}

MojoPerfTestClient::~MojoPerfTestClient() = default;

int MojoPerfTestClient::Run(MojoHandle handle) {
  handle_ = mojo::MakeScopedHandle(mojo::MessagePipeHandle(handle));
  LockThreadAffinity thread_locker(kSharedCore);

  base::RunLoop run_loop;
  std::unique_ptr<ChannelProxy> channel = IPC::ChannelProxy::Create(
      handle_.release(), Channel::MODE_CLIENT, listener_.get(),
      GetIOThreadTaskRunner(),
      base::SingleThreadTaskRunner::GetCurrentDefault());
  listener_->Init(channel.get(), run_loop.QuitWhenIdleClosure());
  run_loop.Run();
  return 0;
}

ReflectorImpl::ReflectorImpl(mojo::ScopedMessagePipeHandle handle,
                             base::OnceClosure quit_closure)
    : quit_closure_(std::move(quit_closure)),
      receiver_(
          this,
          mojo::PendingReceiver<IPC::mojom::Reflector>(std::move(handle))) {}

ReflectorImpl::~ReflectorImpl() {
  std::ignore = receiver_.Unbind().PassPipe().release();
}

void ReflectorImpl::Ping(const std::string& value, PingCallback callback) {
  std::move(callback).Run(value);
}

void ReflectorImpl::SyncPing(const std::string& value, PingCallback callback) {
  std::move(callback).Run(value);
}

void ReflectorImpl::Quit() {
  if (quit_closure_)
    std::move(quit_closure_).Run();
}

}  // namespace IPC