std::system_error e(std::string("我的自定义错误:"), std::errno, 123); 2. 检查std::system_error对象的成员变量 通过检查std::system_error对象的成员变量,我们可以判断具体的错误类型。 e.get_error()返回一个const char*类型的错误信息。 std::cerr << "发生错误:" << e.get_error() << std...
演示如何从 errno 值创建 system_error 异常 运行此代码 #include <iostream> #include <system_error> int main() { try { throw std::system_error(EDOM, std::generic_category(), "FIX ME"); } catch (const std::system_error& ex) { std::cout << "code: [" << ex.code() << "]\n"...
另外,如果出错或者 joinable() == false,则会抛出 std::system_error。 #include <iostream> #include <chrono> #include <thread> void independentThread() { std::cout << "Starting concurrent thread.\n"; std::this_thread::sleep_for(std::chrono::seconds(2)); std::cout << "Exiting concurren...
STL 有意将std::error_code作为std::system_error的附属品,而非单独的错误处理机制。 std::error_code STL 中早期类似的错误码实现需求来自(C++17 才正式进入标准的)文件系统 API,当时的实现认为错误分类应在errno和操作系统原生错误码上二选一。但由于 STL 中网络、各种奇形怪状的 Boost 库的陆续加入,大家急...
std::system_error::code std::system_error::system_error std::system_error::what std::terminate std::terminate_handler std::throw_with_nested std::tie std::time std::timespec std::timespec_get std::time_t std::tm std::to_chars std::tuple std::tuple::swap std::tuple::tuple std::...
#define _I386_ERRNO_H #define EPERM 1 /* Operation not permitted */ #define ENOENT 2 /* No such file or directory */ #define ESRCH 3 /* No such process */ #define EINTR 4 /* Interrupted system call */ #define EIO 5 /* I/O error */ ...
std::system_error::system_error std::system_error::what std::terminate std::terminate_handler std::throw_with_nested std::tie std::time std::timespec std::timespec_get std::time_t std::tm std::to_chars std::tuple std::tuple::swap std::tuple::tuple std::tuple_cat std::tuple_elem...
std::system_error::system_error std::system_error::what std::terminate std::terminate_handler std::throw_with_nested std::tie std::time std::timespec std::timespec_get std::time_t std::tm std::to_chars std::tuple std::tuple::swap std::tuple::tuple std::tuple_cat std::tuple_elem...
另外,如果出错或者 joinable() == false,则会抛出 std::system_error。 #include <iostream> #include <chrono> #include <thread> void independentThread() { std::cout << "Starting concurrent thread.\n"; std::this_thread::sleep_for(std::chrono::seconds(2)); std::cout << "Exiting concurren...
问如何将std::system_error异常与std::errc值进行可移植性比较？EN一、背景介绍： 函数指针始终不太...