signal.hpp

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#ifndef _POWERDXX_SYS_SIGNAL_HPP_
#define _POWERDXX_SYS_SIGNAL_HPP_
 
#include "error.hpp"    /* sys::sc_error */
 
#include <csignal>
 
namespace sys {
 
namespace sig {
 
struct error {};
 
using sig_t = void (*)(int);
 
class Signal {
    private:
    int const sig;
 
    sig_t const handler;
 
    public:
    Signal(int const sig, sig_t const handler) :
        sig{sig}, handler{::signal(sig, handler)} {
        if (this->handler == SIG_ERR) {
            throw sc_error<error>{errno};
        }
    }
 
    ~Signal() {
        ::signal(this->sig, this->handler);
    }
};
 
} /* namespace sig */
 
} /* namespace sys */
 
#endif /* _POWERDXX_SYS_SIGNAL_HPP_ */