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io_wantwrite(3) 	    Library Functions Manual		 io_wantwrite(3)

NAME
     io_wantwrite - signal that you want to write to a descriptor

SYNTAX
     #include <libowfat/io.h>

     void io_wantwrite(int64 fd);

DESCRIPTION
     io_wantwrite  tells  the  next io_wait() that you want to write to this de-
     scriptor.	Call io_dontwantwrite() again if you change your mind.

     The next time you call io_wait(), it will look whether this descriptor  be-
     comes  writeable, too.  You can then use io_canwrite() to check whether the
     descriptor has become writable.

     You have to have called io_fd on the descriptor first (io_pipe and io_sock-
     etpair do this for you).  Waiting on descriptors only  works  for	sockets,
     fifos  and  pipes.  It may also work on devices and TTYs, but that is plat-
     form dependent -- you should not rely on that.

SEE ALSO
     io_wait(3), io_canwrite(3), io_wantwrite(3), io_fd(3)

								 io_wantwrite(3)

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