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Various minor changes

This commit is contained in:
Michael Kerrisk 2006-05-13 06:08:41 +00:00
parent c8e01c783b
commit 6efed4df1f
1 changed files with 11 additions and 8 deletions
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19
man2/select.2
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@ -52,7 +52,7 @@ select, pselect, FD_CLR, FD_ISSET, FD_SET, FD_ZERO \- synchronous I/O multiplexi
.br
.B #include <unistd.h>
.sp
\fBint select(int \fIn\fB, fd_set *\fIreadfds\fB, fd_set *\fIwritefds\fB,
\fBint select(int \fInfds\fB, fd_set *\fIreadfds\fB, fd_set *\fIwritefds\fB,
fd_set *\fIexceptfds\fB, struct timeval *\fItimeout\fB);
.sp
.BI "void FD_CLR(int " fd ", fd_set *" set );
@ -66,7 +66,7 @@ select, pselect, FD_CLR, FD_ISSET, FD_SET, FD_ZERO \- synchronous I/O multiplexi
.B #define _XOPEN_SOURCE 600
.B #include <sys/select.h>
.sp
\fBint pselect(int \fIn\fB, fd_set *\fIreadfds\fB, fd_set *\fIwritefds\fB,
\fBint pselect(int \fInfds\fB, fd_set *\fIreadfds\fB, fd_set *\fIwritefds\fB,
fd_set *\fIexceptfds\fB, const struct timespec *\fItimeout\fB,
const sigset_t *\fIsigmask\fB);
.fi
@ -145,7 +145,7 @@ this is useful after
.BR select ()
returns.
.PP
.I n
.I nfds
is the highest-numbered file descriptor in any of the three sets, plus 1.
.PP
.I timeout
@ -176,7 +176,7 @@ argument, the following
call:
.nf
ready = pselect(n, &readfds, &writefds, &exceptfds,
ready = pselect(nfds, &readfds, &writefds, &exceptfds,
timeout, &sigmask);
.fi
@ -287,19 +287,20 @@ rely on their contents after an error.
.TP
.B EBADF
An invalid file descriptor was given in one of the sets.
(Perhaps a file descriptor that was already closed,
or one on which an error has occurred.)
.TP
.B EINTR
A non blocked signal was caught.
A signal was caught.
.TP
.B EINVAL
.I n
.I nfds
is negative or the value contained within
.I timeout
is invalid.
.TP
.B ENOMEM
.BR select ()
was unable to allocate memory for internal tables.
unable to allocate memory for internal tables.
.SH EXAMPLE
.nf
#include <stdio.h>
@ -316,6 +317,7 @@ main(void) {
/* Watch stdin (fd 0) to see when it has input. */
FD_ZERO(&rfds);
FD_SET(0, &rfds);
/* Wait up to five seconds. */
tv.tv_sec = 5;
tv.tv_usec = 0;
@ -482,4 +484,5 @@ For vaguely related stuff, see
.BR send (2),
.BR sigprocmask (2),
.BR write (2),
.BR epoll (7),
.BR ftm (7)