method

ready?

v1_9_1_378 - Show latest stable - 0 notes - Class: IO

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What's this?

ready?() public

Returns non-nil if input available without blocking, or nil.

static VALUE
io_ready_p(VALUE io)
{
    rb_io_t *fptr;
    ioctl_arg n;

    GetOpenFile(io, fptr);
    rb_io_check_readable(fptr);
    if (rb_io_read_pending(fptr)) return Qtrue;
    if (!FIONREAD_POSSIBLE_P(fptr->fd)) return Qfalse;
    if (ioctl(fptr->fd, FIONREAD, &n)) rb_sys_fail(0);
    if (n > 0) return ioctl_arg2num(n);
    return Qnil;
}

ready?

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