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.TH io_dontwantwrite 3
io_dontwantwrite \- signal that you do not want to write to a descriptor
.B #include <io.h>
void \fBio_dontwantwrite\fP(int64 fd);
io_dontwantwrite tells the next io_wait() that you don't want to write
to this descriptor for now. Call io_wantwrite() again if you change
your mind.
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.
io_wait(3), io_canwrite(3), io_wantwrite(3), io_fd(3)