C++之解决、捕捉第三库或SDK接口的异常退出

       在开发中，经常会使用第三方库或SDK接口，以达到为我所用的效果；但是无法预估接口的具体细节，经常抛出异常、退出（例如abort）

#include
#include
jmp_buf env;
void signal_hander_fun(int signal_num)
{
    XMLLogger::getInstance()->writeLogUrl("OES_SDK_ERROR", QStringList() << u8"错误信号码：" + QString::number(signal_num));
    longjmp(env, 2);
}
namespace  {
#ifdef Q_OS_WIN
typedef void (*SigHander)(int);
#else
typedef __sighandler_t SigHander;
#endif
class SignalCapture
{
public:
    explicit SignalCapture()
    {
        _sigSegvHandler = signal(SIGSEGV, signal_hander_fun);
        _sigAbrtHandler = signal(SIGABRT, signal_hander_fun);
        _sigIntHandler = signal(SIGINT, signal_hander_fun);
        _sigIllHandler = signal(SIGILL, signal_hander_fun);
        _sigFpeHandler = signal(SIGFPE, signal_hander_fun);
        _sigTermHandler = signal(SIGTERM, signal_hander_fun);
#ifdef Q_OS_LINUX
        _sigBusHandler = signal(SIGBUS, signal_hander_fun);
        _sigQuitHandler = signal(SIGQUIT, signal_hander_fun);
#else
        _sigBrkHandler = signal(SIGBREAK, signal_hander_fun);
        _sigAbrtCompatHandler = signal(SIGABRT_COMPAT, signal_hander_fun);
#endif
    }
    virtual ~SignalCapture()
    {
        signal(SIGSEGV, _sigSegvHandler);
        signal(SIGABRT, _sigAbrtHandler);
        signal(SIGINT, _sigIntHandler);
        signal(SIGILL, _sigIllHandler);
        signal(SIGFPE, _sigFpeHandler);
        signal(SIGTERM, _sigTermHandler);
#ifdef Q_OS_LINUX
        signal(SIGBUS, _sigBusHandler);
        signal(SIGQUIT, _sigQuitHandler);
#else
        signal(SIGBREAK, _sigBrkHandler);
        signal(SIGABRT_COMPAT, _sigAbrtCompatHandler);
#endif
    }

private:
    SigHander _sigSegvHandler;
    SigHander _sigAbrtHandler;
    SigHander _sigIntHandler;
    SigHander _sigIllHandler;
    SigHander _sigFpeHandler;
    SigHander _sigTermHandler;
#ifdef Q_OS_LINUX
    SigHander _sigBusHandler;
    SigHander _sigQuitHandler;
#else
    SigHander _sigBrkHandler;
    SigHander _sigAbrtCompatHandler;
#endif
};

template
int tryCall(Callable fun, Args&&... args)
{
    int ret = OES_SDK_ERROR;
    SignalCapture sigCapture;
    if(setjmp(env) != 0)
        return OES_SDK_ERROR;
    try
    {
        ret = fun(std::forward(args)...);
    }
    catch(...)
    {
    }
    return ret;
}

         通过tryCall模板函数可以捕捉异常退出的信号。