std::abort
Defined in header <cstdlib> | ? | ? |
|---|---|---|
void abort(); | ? | (until C++11) |
[noreturn] void abort(); | ? | (since C++11) |
导致异常程序终止，除非SIGABRT被传递给信号的信号处理程序捕获，而处理程序不返回。
具有自动、线程本地和静态变量的析构函数储存期限都不叫。传递给std::atexit()也不叫。是否关闭文件等开放资源是实现定义的。将实现定义状态返回给表示执行失败的主机环境。
参数
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返回值
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例外
(none) | (until C++11) |
|---|---|
noexcept specification: noexcept | (since C++11) |
例
二次
#include <csignal>
#include <iostream>
#include <cstdlib>
class Tester {
public:
Tester() { std::cout << "Tester ctor\n"; }
~Tester() { std::cout << "Tester dtor\n"; }
};
Tester static_tester; // Destructor not called
void signal_handler(int signal)
{
if (signal == SIGABRT) {
std::cerr << "SIGABRT received\n";
} else {
std::cerr << "Unexpected signal " << signal << " received\n";
}
std::_Exit(EXIT_FAILURE);
}
int main()
{
Tester automatic_tester; // Destructor not called
// Setup handler
auto previous_handler = std::signal(SIGABRT, signal_handler);
if (previous_handler == SIG_ERR) {
std::cerr << "Setup failed\n";
return EXIT_FAILURE;
}
std::abort(); // Raise SIGABRT
std::cout << "This code is unreachable\n";
}二次
产出：
二次
Tester ctor
Tester ctor
SIGABRT received二次
另见
exit | causes normal program termination with cleaning up (function) |
|---|---|
atexit | registers a function to be called on std::exit() invocation (function) |
quick_exit (C++11) | causes quick program termination without completely cleaning up (function) |
signal | sets a signal handler for particular signal (function) |
c中止的文件
? cppreference.com在CreativeCommonsAttribution下授权-ShareAlike未移植许可v3.0。
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