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Class: IO

Relationships & Source Files
Inherits: Object
Defined in: ext/io/nonblock/nonblock.c

Instance Attribute Summary

Instance Attribute Details

#nonblock {|io| ... } ⇒ IO (rw) #nonblock(boolean) {|io| ... } ⇒ IO

Yields self in non-blocking mode.

When false is given as an argument, self is yielded in blocking mode. The original mode is restored after the block is executed.

[ GitHub ] 

  


# File 'ext/io/nonblock/nonblock.c', line 109



static VALUE
rb_io_nonblock_block(int argc, VALUE *argv, VALUE io)
{
    int nb = 1;
    rb_io_t *fptr;
    int f, restore[2];

    GetOpenFile(io, fptr);
    if (argc > 0) {
	VALUE v;
	rb_scan_args(argc, argv, "01", &v);
	nb = RTEST(v);
    }
    f = io_nonblock_mode(fptr->fd);
    restore[0] = fptr->fd;
    restore[1] = f;
    if (!io_nonblock_set(fptr->fd, f, nb))
	return rb_yield(io);
    return rb_ensure(rb_yield, io, io_nonblock_restore, (VALUE)restore);
}


  








  

    #nonblock=(boolean)  ⇒ Boolean  (rw)  



  

    

Enables non-blocking mode on a stream when set to true, and blocking mode when set to false.


  



  [ GitHub ]


  

  


# File 'ext/io/nonblock/nonblock.c', line 78



static VALUE
rb_io_nonblock_set(VALUE io, VALUE nb)
{
    rb_io_t *fptr;
    GetOpenFile(io, fptr);
    if (RTEST(nb))
	rb_io_set_nonblock(fptr);
    else
	io_nonblock_set(fptr->fd, io_nonblock_mode(fptr->fd), RTEST(nb));
    return io;
}


  








  

    #nonblock?  ⇒ Boolean  (rw)  



  

    

Returns true if an IO object is in non-blocking mode.


  



  [ GitHub ]


  

  


# File 'ext/io/nonblock/nonblock.c', line 39



static VALUE
rb_io_nonblock_p(VALUE io)
{
    rb_io_t *fptr;
    GetOpenFile(io, fptr);
    if (io_nonblock_mode(fptr->fd) & O_NONBLOCK)
	return Qtrue;
    return Qfalse;
}