io_wantwrite(3)io_wantwrite(3)NAMEio_wantwrite - signal that you want to write to a descriptor
SYNTAX
#include <io.h>
void io_wantwrite(int64 fd);
DESCRIPTIONio_wantwrite tells the next io_wait() that you want to write to this
descriptor. Call io_dontwantwrite() again if you change your mind.
The next time you call io_wait(), it will look whether this descriptor
becomes 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_socketpair 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 platform dependent -- you should not rely on that.
SEE ALSOio_wait(3), io_canwrite(3), io_wantwrite(3), io_fd(3)io_wantwrite(3)
