You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
22 lines
819 B
Groff
22 lines
819 B
Groff
21 years ago
|
.TH io_wantread 3
|
||
|
|
.SH NAME
|
||
|
|
io_wantread \- signal that you want to read from a descriptor
|
||
|
|
.SH SYNTAX
|
||
|
|
.B #include <io.h>
|
||
|
|
|
||
|
|
void \fBio_wantread\fP(int64 fd);
|
||
|
|
.SH 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.
|
||
|
|
.SH "SEE ALSO"
|
||
|
|
io_wait(3), io_canread(3), io_wantread(3), io_fd(3)
|