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client3.cpp
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client3.cpp
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#include <algorithm>
#include <iostream>
#include <list>
#include <string>
#include <mutex>
#include <assert.h>
#include <vector>
#include <memory>
#include <thread>
#include "io_pool.h"
namespace {
#pragma pack(push,1)
struct Header {
uint32_t body_size_; // net order
uint32_t packet_count_; // net order
uint32_t get_body_size() const {
return ntohl(body_size_);
}
uint32_t get_full_size() const {
return sizeof(Header) + ntohl(body_size_);
}
void inc_packet_count() {
uint32_t count = ntohl(packet_count_) + 1;
packet_count_ = htonl(count);
}
};
#pragma pack(pop)
uint64_t clock_us() {
return std::chrono::steady_clock::now().time_since_epoch().count() / 1000;
}
class session : noncopyable
{
public:
session(asio::io_service& ios, size_t total_count)
: io_service_(ios)
, socket_(ios)
, total_count_(total_count) {
}
~session() {
}
void write() {
Header* header = (Header*)buffer_;
uint32_t full_size = header->get_full_size();
asio::async_write(socket_, asio::buffer(buffer_, full_size),
[this](const asio::error_code& err, size_t cb) {
if (!err) {
read_head();
}
});
}
void read_head() {
asio::async_read(socket_, asio::buffer(buffer_, sizeof(Header)),
[this](const asio::error_code& err, size_t cb) {
if (!err) {
read_body();
}
});
}
void read_body() {
Header* header = (Header*)buffer_;
size_t body_size = header->get_body_size();
asio::async_read(socket_,
asio::buffer(buffer_ + sizeof(Header), body_size),
[this](const asio::error_code& err, size_t cb) {
if (!err) {
if (check_count()) {
finished_ = true;
stop_time_ = clock_us();
socket_.close();
} else {
Header* header = (Header*)buffer_;
header->body_size_ = htonl(get_body_len());
header->inc_packet_count();
write();
}
}
});
}
void start(asio::ip::tcp::endpoint endpoint) {
socket_.async_connect(endpoint, [this](const asio::error_code& err) {
if (!err)
{
asio::ip::tcp::no_delay no_delay(true);
socket_.set_option(no_delay);
Header* header = (Header*)buffer_;
header->body_size_ = htonl(get_body_len());
header->packet_count_ = htonl(1);
start_time_ = clock_us();
write();
}
});
}
bool finished() const {
return finished_;
}
uint64_t use_time() const {
return stop_time_ - start_time_;
}
private:
uint32_t get_body_len() {
if (body_len_ > 10000)
body_len_ = 100;
return body_len_++;
}
bool check_count() {
Header* header = (Header*)buffer_;
return (ntohl(header->packet_count_) >= total_count_);
}
private:
asio::io_service& io_service_;
asio::ip::tcp::socket socket_;
static size_t const max_block_size_ = 10000 + sizeof(Header);
char buffer_[max_block_size_];
bool finished_ = false;
uint32_t const total_count_;
uint64_t start_time_ = 0;
uint64_t stop_time_ = 0;
uint32_t body_len_ = 100;
};
class client : noncopyable
{
public:
client(int thread_count,
char const* host, char const* port,
uint32_t total_count, size_t session_count)
: thread_count_(thread_count) {
io_services_.resize(thread_count_);
threads_.resize(thread_count_);
for (auto i = 0; i < thread_count_; ++i) {
io_services_[i].reset(new asio::io_service);
}
resolver_.reset(new asio::ip::tcp::resolver(*io_services_[0]));
asio::ip::tcp::resolver::iterator iter =
resolver_->resolve(asio::ip::tcp::resolver::query(host, port));
endpoint_ = *iter;
for (size_t i = 0; i < session_count; ++i)
{
auto& io_service = *io_services_[i % thread_count_];
std::unique_ptr<session> new_session(new session(io_service,
total_count));
sessions_.emplace_back(std::move(new_session));
}
}
~client() {
uint32_t finished_count = 0;
uint32_t error_count = 0;
uint64_t total_time = 0;
for (auto& session : sessions_) {
if (session->finished()) {
++finished_count;
total_time += session->use_time();
} else {
++error_count;
}
}
std::cout << "failed count: " << error_count << "\n";
std::cout << "finished count: " << finished_count << "\n";
std::cout << "average time(us): " <<
(uint64_t)((double)total_time / finished_count) << "\n";
}
void start() {
for (auto& session : sessions_) {
session->start(endpoint_);
}
for (auto i = 0; i < thread_count_; ++i) {
threads_[i].reset(new std::thread([this, i]() {
auto& io_service = *io_services_[i];
try {
io_service.run();
} catch (std::exception& e) {
std::cerr << "Exception: " << e.what() << "\n";
}
}));
}
}
void wait() {
for (auto& thread : threads_) {
thread->join();
}
}
private:
int const thread_count_;
std::vector<std::unique_ptr<asio::io_service>> io_services_;
std::unique_ptr<asio::ip::tcp::resolver> resolver_;
std::vector<std::unique_ptr<std::thread>> threads_;
std::vector<std::unique_ptr<session>> sessions_;
asio::ip::tcp::endpoint endpoint_;
};
} // namespace
void client_test3(int thread_count, char const* host, char const* port,
size_t total_count, size_t session_count) {
try {
client c(thread_count, host, port, total_count, session_count);
c.start();
c.wait();
} catch (std::exception& e) {
std::cerr << "Exception: " << e.what() << "\n";
}
}