summaryrefslogtreecommitdiffstats
path: root/man-pages-posix-2003/man0p/sys_select.h.0p
diff options
context:
space:
mode:
Diffstat (limited to 'man-pages-posix-2003/man0p/sys_select.h.0p')
-rw-r--r--man-pages-posix-2003/man0p/sys_select.h.0p115
1 files changed, 115 insertions, 0 deletions
diff --git a/man-pages-posix-2003/man0p/sys_select.h.0p b/man-pages-posix-2003/man0p/sys_select.h.0p
new file mode 100644
index 0000000..5ea026c
--- /dev/null
+++ b/man-pages-posix-2003/man0p/sys_select.h.0p
@@ -0,0 +1,115 @@
+.\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved
+.TH "<sys/select.h>" 0P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual"
+.\" <sys/select.h>
+.SH NAME
+sys/select.h \- select types
+.SH SYNOPSIS
+.LP
+\fB#include <sys/select.h>\fP
+.SH DESCRIPTION
+.LP
+The \fI<sys/select.h>\fP header shall define the \fBtimeval\fP structure
+that includes at least the following
+members:
+.sp
+.RS
+.nf
+
+\fBtime_t tv_sec \fP Seconds. \fB
+suseconds_t tv_usec \fP Microseconds. \fB
+\fP
+.fi
+.RE
+.LP
+The \fBtime_t\fP and \fBsuseconds_t\fP types shall be defined as described
+in \fI<sys/types.h>\fP .
+.LP
+The \fBsigset_t\fP type shall be defined as described in \fI<signal.h>\fP
+\&.
+.LP
+The \fBtimespec\fP structure shall be defined as described in \fI<time.h>\fP
+\&.
+.LP
+The \fI<sys/select.h>\fP header shall define the \fBfd_set\fP type
+as a structure.
+.LP
+Each of the following may be declared as a function, or defined as
+a macro, or both:
+.TP 7
+\fBvoid\fP \fIFD_CLR\fP(\fBint\fP \fIfd\fP, \fBfd_set *\fP\fIfdset\fP)
+.sp
+Clears the bit for the file descriptor \fIfd\fP in the file descriptor
+set \fIfdset\fP.
+.TP 7
+\fBint\fP \fIFD_ISSET\fP(\fBint\fP \fIfd\fP, \fBfd_set *\fP\fIfdset\fP)
+.sp
+Returns a non-zero value if the bit for the file descriptor \fIfd\fP
+is set in the file descriptor set by \fIfdset\fP, and 0
+otherwise.
+.TP 7
+\fBvoid\fP \fIFD_SET\fP(\fBint\fP \fIfd\fP, \fBfd_set *\fP\fIfdset\fP)
+.sp
+Sets the bit for the file descriptor \fIfd\fP in the file descriptor
+set \fIfdset\fP.
+.TP 7
+\fBvoid\fP \fIFD_ZERO\fP(\fBfd_set *\fP\fIfdset\fP)
+.sp
+Initializes the file descriptor set \fIfdset\fP to have zero bits
+for all file descriptors.
+.sp
+.LP
+If implemented as macros, these may evaluate their arguments more
+than once, so applications should ensure that the arguments
+they supply are never expressions with side effects.
+.LP
+The following shall be defined as a macro:
+.TP 7
+FD_SETSIZE
+.sp
+Maximum number of file descriptors in an \fBfd_set\fP structure.
+.sp
+.LP
+The following shall be declared as functions and may also be defined
+as macros. Function prototypes shall be provided.
+.sp
+.RS
+.nf
+
+\fBint pselect(int, fd_set *restrict, fd_set *restrict, fd_set *restrict,
+ const struct timespec *restrict, const sigset_t *restrict);
+int select(int, fd_set *restrict, fd_set *restrict, fd_set *restrict,
+ struct timeval *restrict);
+\fP
+.fi
+.RE
+.LP
+Inclusion of the \fI<sys/select.h>\fP header may make visible all
+symbols from the headers \fI<signal.h>\fP, \fI<sys/time.h>\fP,
+and \fI<time.h>\fP.
+.LP
+\fIThe following sections are informative.\fP
+.SH APPLICATION USAGE
+.LP
+None.
+.SH RATIONALE
+.LP
+None.
+.SH FUTURE DIRECTIONS
+.LP
+None.
+.SH SEE ALSO
+.LP
+\fI<signal.h>\fP, \fI<sys/time.h>\fP,
+\fI<sys/types.h>\fP, \fI<time.h>\fP, the
+System Interfaces volume of IEEE\ Std\ 1003.1-2001, \fIpselect\fP(),
+\fIselect\fP()
+.SH COPYRIGHT
+Portions of this text are reprinted and reproduced in electronic form
+from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
+-- Portable Operating System Interface (POSIX), The Open Group Base
+Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
+Electrical and Electronics Engineers, Inc and The Open Group. In the
+event of any discrepancy between this version and the original IEEE and
+The Open Group Standard, the original IEEE and The Open Group Standard
+is the referee document. The original Standard can be obtained online at
+http://www.opengroup.org/unix/online.html .