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// Copyright 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.
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <string>
#include <vector>
#include "base/bind.h"
#include "base/location.h"
#include "base/logging.h"
#include "base/macros.h"
#include "base/pickle.h"
#include "base/strings/stringprintf.h"
#include "base/test/perf_time_logger.h"
#include "base/time/time.h"
#include "mojo/common/test/test_utils.h"
#include "mojo/embedder/scoped_platform_handle.h"
#include "mojo/system/channel.h"
#include "mojo/system/local_message_pipe_endpoint.h"
#include "mojo/system/message_pipe.h"
#include "mojo/system/message_pipe_test_utils.h"
#include "mojo/system/proxy_message_pipe_endpoint.h"
#include "mojo/system/raw_channel.h"
#include "mojo/system/test_utils.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace mojo {
namespace system {
namespace {
class MultiprocessMessagePipePerfTest
: public test::MultiprocessMessagePipeTestBase {
public:
MultiprocessMessagePipePerfTest() : message_count_(0), message_size_(0) {}
void SetUpMeasurement(int message_count, size_t message_size) {
message_count_ = message_count;
message_size_ = message_size;
payload_ = Pickle();
payload_.WriteString(std::string(message_size, '*'));
read_buffer_.resize(message_size * 2);
}
protected:
void WriteWaitThenRead(scoped_refptr<MessagePipe> mp) {
CHECK_EQ(mp->WriteMessage(0,
UserPointer<const void>(payload_.data()),
static_cast<uint32_t>(payload_.size()),
NULL,
MOJO_WRITE_MESSAGE_FLAG_NONE),
MOJO_RESULT_OK);
HandleSignalsState hss;
CHECK_EQ(test::WaitIfNecessary(mp, MOJO_HANDLE_SIGNAL_READABLE, &hss),
MOJO_RESULT_OK);
uint32_t read_buffer_size = static_cast<uint32_t>(read_buffer_.size());
CHECK_EQ(mp->ReadMessage(0,
UserPointer<void>(&read_buffer_[0]),
MakeUserPointer(&read_buffer_size),
NULL,
NULL,
MOJO_READ_MESSAGE_FLAG_NONE),
MOJO_RESULT_OK);
CHECK_EQ(read_buffer_size, static_cast<uint32_t>(payload_.size()));
}
void SendQuitMessage(scoped_refptr<MessagePipe> mp) {
CHECK_EQ(mp->WriteMessage(0,
UserPointer<const void>(""),
0,
NULL,
MOJO_WRITE_MESSAGE_FLAG_NONE),
MOJO_RESULT_OK);
}
void Measure(scoped_refptr<MessagePipe> mp) {
// Have one ping-pong to ensure channel being established.
WriteWaitThenRead(mp);
std::string test_name =
base::StringPrintf("IPC_Perf_%dx_%u",
message_count_,
static_cast<unsigned>(message_size_));
base::PerfTimeLogger logger(test_name.c_str());
for (int i = 0; i < message_count_; ++i)
WriteWaitThenRead(mp);
logger.Done();
}
private:
int message_count_;
size_t message_size_;
Pickle payload_;
std::string read_buffer_;
scoped_ptr<base::PerfTimeLogger> perf_logger_;
};
// For each message received, sends a reply message with the same contents
// repeated twice, until the other end is closed or it receives "quitquitquit"
// (which it doesn't reply to). It'll return the number of messages received,
// not including any "quitquitquit" message, modulo 100.
MOJO_MULTIPROCESS_TEST_CHILD_MAIN(PingPongClient) {
embedder::SimplePlatformSupport platform_support;
test::ChannelThread channel_thread(&platform_support);
embedder::ScopedPlatformHandle client_platform_handle =
mojo::test::MultiprocessTestHelper::client_platform_handle.Pass();
CHECK(client_platform_handle.is_valid());
scoped_refptr<MessagePipe> mp(new MessagePipe(
scoped_ptr<MessagePipeEndpoint>(new LocalMessagePipeEndpoint()),
scoped_ptr<MessagePipeEndpoint>(new ProxyMessagePipeEndpoint())));
channel_thread.Start(client_platform_handle.Pass(), mp);
std::string buffer(1000000, '\0');
int rv = 0;
while (true) {
// Wait for our end of the message pipe to be readable.
HandleSignalsState hss;
MojoResult result =
test::WaitIfNecessary(mp, MOJO_HANDLE_SIGNAL_READABLE, &hss);
if (result != MOJO_RESULT_OK) {
rv = result;
break;
}
uint32_t read_size = static_cast<uint32_t>(buffer.size());
CHECK_EQ(mp->ReadMessage(0,
UserPointer<void>(&buffer[0]),
MakeUserPointer(&read_size),
NULL,
NULL,
MOJO_READ_MESSAGE_FLAG_NONE),
MOJO_RESULT_OK);
// Empty message indicates quitting
if (0 == read_size)
break;
CHECK_EQ(mp->WriteMessage(0,
UserPointer<const void>(&buffer[0]),
static_cast<uint32_t>(read_size),
NULL,
MOJO_WRITE_MESSAGE_FLAG_NONE),
MOJO_RESULT_OK);
}
mp->Close(0);
return rv;
}
// Repeatedly sends messages as previous one got replied by the child.
// Waits for the child to close its end before quitting once specified
// number of messages has been sent.
TEST_F(MultiprocessMessagePipePerfTest, PingPong) {
helper()->StartChild("PingPongClient");
scoped_refptr<MessagePipe> mp(new MessagePipe(
scoped_ptr<MessagePipeEndpoint>(new LocalMessagePipeEndpoint()),
scoped_ptr<MessagePipeEndpoint>(new ProxyMessagePipeEndpoint())));
Init(mp);
// This values are set to align with one at ipc_pertests.cc for comparison.
const size_t kMsgSize[5] = {12, 144, 1728, 20736, 248832};
const int kMessageCount[5] = {50000, 50000, 50000, 12000, 1000};
for (size_t i = 0; i < 5; i++) {
SetUpMeasurement(kMessageCount[i], kMsgSize[i]);
Measure(mp);
}
SendQuitMessage(mp);
mp->Close(0);
EXPECT_EQ(0, helper()->WaitForChildShutdown());
}
} // namespace
} // namespace system
} // namespace mojo
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