1io_wantread(3)             Library Functions Manual             io_wantread(3)
2
3
4

NAME

6       io_wantread - signal that you want to read from a descriptor
7

SYNTAX

9       #include <io.h>
10
11       void io_wantread(int64 fd);
12

DESCRIPTION

14       io_wantread  tells  the  next io_wait() that you want to read from this
15       descriptor.  Call io_dontwantread() again if you change your mind.
16
17       The next time you call io_wait(), it will look whether this  descriptor
18       becomes  readable, too.  You can then use io_canread() to check whether
19       the descriptor has become readable.
20
21       You have to have called io_fd on  the  descriptor  first  (io_pipe  and
22       io_socketpair  do this for you).  Waiting on descriptors only works for
23       sockets, fifos and pipes.  It may also work on devices  and  TTYs,  but
24       that is platform dependent -- you should not rely on that.
25

SEE ALSO

27       io_wait(3), io_canread(3), io_wantread(3), io_fd(3)
28
29
30
31                                                                io_wantread(3)
Impressum