linux-scalability-benchmarks / libowfat / io / io_dontwantwrite.3

The default branch has multiple heads

.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)