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Man Pages


Manual Reference Pages  -  LIBOWFAT_IO_WANTREAD (3)

NAME

io_wantread - signal that you want to read from a descriptor

CONTENTS

Syntax
Description

SYNTAX

#include <io.h>

void io_wantread(int64 fd);

DESCRIPTION

io_wantread tells the next io_wait() that you want to read from this descriptor. Call io_dontwantread() again if you change your mind.

The next time you call io_wait(), it will look whether this descriptor becomes readable, too. You can then use io_canread() to check whether the descriptor has become readable.

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 ALSO

io_wait(3), io_canread(3), io_wantread(3), io_fd(3)
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