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Merge pull request #39 from kassane/cpp-threadpool

C++: add threadpool(4)
This commit is contained in:
Rene Schallner 2023-08-22 22:44:18 +02:00 committed by GitHub
commit 7817064885
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@ -2,6 +2,7 @@
#include <fstream>
#include <string>
#include <boost/beast.hpp>
#include <boost/asio/thread_pool.hpp>
namespace beast = boost::beast;
namespace http = beast::http;
@ -18,9 +19,28 @@ std::string read_html_file(const std::string& file_path) {
return content;
}
void handle_client(tcp::socket socket, const std::string& msg) {
try {
// Construct an HTTP response with the HTML content
http::response<http::string_body> response;
response.version(11);
response.result(http::status::ok);
response.reason("OK");
response.set(http::field::server, "C++ Server");
response.set(http::field::content_type, "text/html");
response.body() = msg;
response.prepare_payload();
// Send the response to the client
http::write(socket, response);
} catch (const std::exception& e) {
std::cerr << "Error: " << e.what() << std::endl;
}
}
int main() {
try {
net::io_context io_context;
net::io_context io_context{BOOST_ASIO_CONCURRENCY_HINT_UNSAFE_IO};
// Create an endpoint to bind to
tcp::endpoint endpoint(tcp::v4(), 8070);
@ -29,35 +49,29 @@ int main() {
tcp::acceptor acceptor(io_context, endpoint);
std::cout << "Server listening on port 8070..." << std::endl;
// static 17-byte string
std::string msg = "Hello from C++!!!";
// or
// Read HTML content from a file (e.g., "index.html")
// std::string html_content = read_html_file("hello.html");
// std::cout << "str len: " << (html_content.length() == msg.length()) << std::boolalpha << "\n";
// Create a thread pool with 4 threads
net::thread_pool pool(4);
while (true) {
// Wait for a client to connect
tcp::socket socket(io_context);
acceptor.accept(socket);
// static 17-byte string
// Read HTML content from a file (e.g., "index.html")
// std::string html_content = read_html_file("hello.html");
// or
std::string msg = "Hello from C++!!!";
// std::cout << "str len: " << (html_content.length() == msg.length()) << std::boolalpha << "\n";
// Construct an HTTP response with the HTML content
http::response<http::string_body> response;
response.version(11);
response.result(http::status::ok);
response.reason("OK");
response.set(http::field::server, "C++ Server");
response.set(http::field::content_type, "text/html");
// response.body() = html_content;
response.body() = msg;
response.prepare_payload();
// Send the response to the client
http::write(socket, response);
// Post a task to the thread pool to handle the client request
net::post(pool, [socket = std::move(socket), msg]() mutable {
handle_client(std::move(socket), msg);
});
}
// The thread pool destructor will ensure that all threads are joined properly.
} catch (const std::exception& e) {
std::cerr << "Error: " << e.what() << std::endl;
}