In thecatchhandler ofwrite_lots_of_zeros(),errmsg_infois used to create an object that is initialized with the string“writing lots of zeros failed”. This object is then added to the exception of typeboost::exceptionusingoperator<<. Then the exception is re-thrown. 2. BOOST_THROW_EXCEPTI...
catch(std::exception& e) 1. { 1. std::cout << e.what() <<std::endl; 1. } 1. } 1. boost库的实现方案为: //使用Boost定义自己的异常 1. #include <boost/exception/all.hpp> 1. class MyException :virtualpublicstd::exception,virtualpublic boost::exception 1. { 1. }; 1. //定义...
No.1 TCP Socket物理连接 No.2 逻辑登录 No.3 好友在线查询 No.4 状态更新 我们通常的代码写法是 void ThreadLogin() { try { if(fail(物理连接)) throw; if(fail(登录)) throw; if(fail(查询好友)) throw; if(fail(更新)) throw; } catch(exception) { } } 串行的逻辑用串行的代码写,不太好看...
在save_configuration_data() 的 catch 句柄中,通过获取 tag_errmsg 以创建一个对象,它通过字符串 "saving configuration data failed" 进行初始化,以便通过 operator<<() 操作符向异常 boost::exception 中加入更多信息。
// 启动进程 bp::child c("your_executable", ctx); // 等待进程结束 c.wait(); std::cout << "Process exited with code " << c.exit_code() << std::endl; } catch (const std::exception& e) { std::cerr << "Exception: " << e.what() << std::endl; return 1; } return 0;...
(boost::asio::buffer(msg)); // 打印客户端发来的数据 std::cout << "client reply: " << msg.c_str() << std::endl; } } catch (std::exception& _e) { std::cout << "server exceptional." << std::endl; std::cout << _e.what() << std::endl; } std::cout << "server ...
; boost::system::error_code ignored_error; boost::asio::write(socket, boost::asio::buffer(message), ignored_error); } catch (std::exception& e) { std::cerr << "Exception: " << e.what() << std::endl; } return 0; } 编译运行: 代码语言:javascript 代码运行次数:0 运行 AI代码...
void exception_caught (Event const& evt, Fsm& fsm,std::exception& e) { std::cout << "catch exception " << e.what() << " while " << get_typename(evt) << '\n'; } template<class Event, class Fsm> void no_transition(Event const& evt, Fsm &fsm, int x) { ...
end_loop); } BOOST_CATCH(interprocess_exception &ex){ std::cout << ex.what() << std::endl; return 1; } BOOST_CATCH_END return 0; } Semaphores(信号量) 文件锁 文件锁定具有常规的互斥操作以及可共享锁定功能。这意味着我们可以有多个读取器持有可共享锁,而写入器持有排他锁,等待直到读取器...
std::cerr <<"Usage: server /n"; return 1; } usingnamespace std;// For atoi. server s(atoi(argv[1]), 10); s.run(); getchar(); s.stop(); } catch (std::exception& e) { std::cerr <<"Exception: " << e.what() <<"/n"; } return 0; }...