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// Copyright (c) 2014 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 IPC_IPC_PERFTEST_SUPPORT_H_
#define IPC_IPC_PERFTEST_SUPPORT_H_
#include <stddef.h>
#include <vector>
#include "base/macros.h"
#include "base/test/test_io_thread.h"
#include "base/thread_task_runner_handle.h"
#include "build/build_config.h"
#include "ipc/ipc_test_base.h"
namespace IPC {
namespace test {
class ChannelReflectorListener;
class PingPongTestParams {
public:
PingPongTestParams(size_t size, int count)
: message_size_(size), message_count_(count) {
}
size_t message_size() const { return message_size_; }
int message_count() const { return message_count_; }
private:
size_t message_size_;
int message_count_;
};
class IPCChannelPerfTestBase : public IPCTestBase {
public:
IPCChannelPerfTestBase();
~IPCChannelPerfTestBase() override;
static std::vector<PingPongTestParams> GetDefaultTestParams();
void RunTestChannelPingPong(
const std::vector<PingPongTestParams>& params_list);
void RunTestChannelProxyPingPong(
const std::vector<PingPongTestParams>& params_list);
scoped_refptr<base::TaskRunner> io_task_runner() {
if (io_thread_)
return io_thread_->task_runner();
return base::ThreadTaskRunnerHandle::Get();
}
private:
scoped_ptr<base::TestIOThread> io_thread_;
};
class PingPongTestClient {
public:
PingPongTestClient();
virtual ~PingPongTestClient();
virtual scoped_ptr<Channel> CreateChannel(Listener* listener);
int RunMain();
scoped_refptr<base::TaskRunner> task_runner();
private:
base::MessageLoopForIO main_message_loop_;
scoped_ptr<ChannelReflectorListener> listener_;
scoped_ptr<Channel> channel_;
};
// This class locks the current thread to a particular CPU core. This is
// important because otherwise the different threads and processes of these
// tests end up on different CPU cores which means that all of the cores are
// lightly loaded so the OS (Windows and Linux) fails to ramp up the CPU
// frequency, leading to unpredictable and often poor performance.
class LockThreadAffinity {
public:
explicit LockThreadAffinity(int cpu_number);
~LockThreadAffinity();
private:
bool affinity_set_ok_;
#if defined(OS_WIN)
DWORD_PTR old_affinity_;
#elif defined(OS_LINUX)
cpu_set_t old_cpuset_;
#endif
DISALLOW_COPY_AND_ASSIGN(LockThreadAffinity);
};
}
}
#endif // IPC_IPC_PERFTEST_SUPPORT_H_
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