SignalException

Parent:Exception

收到信号时产生。

begin
  Process.kill('HUP',Process.pid)
  sleep # wait for receiver to handle signal sent by Process.kill
rescue SignalException => e
  puts "received Exception #{e}"
end

produces:

received Exception SIGHUP

公共类方法

new(sig_name) → signal_exception Show source

new(sig_number , name) → signal_exception

构造一个新的SignalException对象。sig_name应该是已知的信号名称。

static VALUE
esignal_init(int argc, VALUE *argv, VALUE self)
{
    int argnum = 1;
    VALUE sig = Qnil;
    int signo;
    const char *signm;

    if (argc > 0) {
        sig = rb_check_to_integer(argv[0], "to_int");
        if (!NIL_P(sig)) argnum = 2;
        else sig = argv[0];
    }
    rb_check_arity(argc, 1, argnum);
    if (argnum == 2) {
        signo = NUM2INT(sig);
        if (signo < 0 || signo > NSIG) {
            rb_raise(rb_eArgError, "invalid signal number (%d)", signo);
        }
        if (argc > 1) {
            sig = argv[1];
        }
        else {
            sig = rb_signo2signm(signo);
        }
    }
    else {
        int len = sizeof(signame_prefix);
        if (SYMBOL_P(sig)) sig = rb_sym2str(sig); else StringValue(sig);
        signm = RSTRING_PTR(sig);
        if (strncmp(signm, signame_prefix, len) == 0) {
            signm += len;
            len = 0;
        }
        signo = signm2signo(signm);
        if (!signo) {
            rb_raise(rb_eArgError, "unsupported name `%.*s%"PRIsVALUE"'",
                     len, signame_prefix, sig);
        }
        sig = rb_sprintf("SIG%s", signm);
    }
    rb_call_super(1, &sig);
    rb_ivar_set(self, id_signo, INT2NUM(signo));

    return self;
}

公共实例方法

signo → num Show source

返回一个信号编号。

static VALUE
esignal_signo(VALUE self)
{
    return rb_ivar_get(self, id_signo);
}