// Copyright 2017 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef IPC_IPC_PERFTEST_UTIL_H_
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#define IPC_IPC_PERFTEST_UTIL_H_
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#include <string>
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#include "base/callback.h"
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#include "base/macros.h"
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#include "base/memory/ref_counted.h"
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#include "base/message_loop/message_loop.h"
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#include "base/process/process_metrics.h"
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#include "base/single_thread_task_runner.h"
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#include "build/build_config.h"
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#include "ipc/ipc_channel.h"
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#include "ipc/ipc_listener.h"
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#include "ipc/ipc_message.h"
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#include "ipc/ipc_sender.h"
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#include "ipc/ipc_test.mojom.h"
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#include "mojo/public/cpp/bindings/binding.h"
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#include "mojo/public/cpp/system/core.h"
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namespace IPC {
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scoped_refptr<base::SingleThreadTaskRunner> GetIOThreadTaskRunner();
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// This channel listener just replies to all messages with the exact same
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// message. It assumes each message has one string parameter. When the string
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// "quit" is sent, it will exit.
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class ChannelReflectorListener : public Listener {
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public:
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ChannelReflectorListener();
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~ChannelReflectorListener() override;
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void Init(Sender* channel, const base::Closure& quit_closure);
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bool OnMessageReceived(const Message& message) override;
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void OnHello();
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void OnPing(const std::string& payload);
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void OnSyncPing(const std::string& payload, std::string* response);
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void OnQuit();
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void Send(IPC::Message* message);
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private:
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Sender* channel_;
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base::Closure quit_closure_;
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};
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// This class locks the current thread to a particular CPU core. This is
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// important because otherwise the different threads and processes of these
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// tests end up on different CPU cores which means that all of the cores are
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// lightly loaded so the OS (Windows and Linux) fails to ramp up the CPU
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// frequency, leading to unpredictable and often poor performance.
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class LockThreadAffinity {
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public:
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explicit LockThreadAffinity(int cpu_number);
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~LockThreadAffinity();
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private:
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bool affinity_set_ok_;
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#if defined(OS_WIN)
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DWORD_PTR old_affinity_;
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#elif defined(OS_LINUX)
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cpu_set_t old_cpuset_;
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#endif
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DISALLOW_COPY_AND_ASSIGN(LockThreadAffinity);
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};
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// Avoid core 0 due to conflicts with Intel's Power Gadget.
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// Setting thread affinity will fail harmlessly on single/dual core machines.
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const int kSharedCore = 2;
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class MojoPerfTestClient {
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public:
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MojoPerfTestClient();
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~MojoPerfTestClient();
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int Run(MojoHandle handle);
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private:
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base::MessageLoop main_message_loop_;
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std::unique_ptr<ChannelReflectorListener> listener_;
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std::unique_ptr<Channel> channel_;
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mojo::ScopedMessagePipeHandle handle_;
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};
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class ReflectorImpl : public IPC::mojom::Reflector {
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public:
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explicit ReflectorImpl(mojo::ScopedMessagePipeHandle handle,
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const base::Closure& quit_closure);
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~ReflectorImpl() override;
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private:
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// IPC::mojom::Reflector:
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void Ping(const std::string& value, PingCallback callback) override;
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void SyncPing(const std::string& value, PingCallback callback) override;
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void Quit() override;
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base::Closure quit_closure_;
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mojo::Binding<IPC::mojom::Reflector> binding_;
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};
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} // namespace IPC
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#endif // IPC_IPC_PERFTEST_UTIL_H_
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