summaryrefslogtreecommitdiffstats
path: root/man-pages-posix-2013/man0p/sys_time.h.0p
diff options
context:
space:
mode:
Diffstat (limited to 'man-pages-posix-2013/man0p/sys_time.h.0p')
-rw-r--r--man-pages-posix-2013/man0p/sys_time.h.0p145
1 files changed, 145 insertions, 0 deletions
diff --git a/man-pages-posix-2013/man0p/sys_time.h.0p b/man-pages-posix-2013/man0p/sys_time.h.0p
new file mode 100644
index 0000000..30d38ae
--- /dev/null
+++ b/man-pages-posix-2013/man0p/sys_time.h.0p
@@ -0,0 +1,145 @@
+'\" et
+.TH sys_time.h "0P" 2013 "IEEE/The Open Group" "POSIX Programmer's Manual"
+.SH PROLOG
+This manual page is part of the POSIX Programmer's Manual.
+The Linux implementation of this interface may differ (consult
+the corresponding Linux manual page for details of Linux behavior),
+or the interface may not be implemented on Linux.
+
+.SH NAME
+sys/time.h
+\(em time types
+.SH SYNOPSIS
+.LP
+.nf
+#include <sys/time.h>
+.fi
+.SH DESCRIPTION
+The
+.IR <sys/time.h>
+header shall define the
+.BR timeval
+structure, which shall include at least the following members:
+.sp
+.RS 4
+.nf
+\fB
+time_t tv_sec \fRSeconds.\fR
+suseconds_t tv_usec \fRMicroseconds.\fR
+.fi \fR
+.P
+.RE
+.P
+The
+.IR <sys/time.h>
+header shall define the
+.BR itimerval
+structure, which shall include at least the following members:
+.sp
+.RS 4
+.nf
+\fB
+struct timeval it_interval \fRTimer interval.\fR
+struct timeval it_value \fRCurrent value.\fR
+.fi \fR
+.P
+.RE
+.P
+The
+.IR <sys/time.h>
+header shall define the
+.BR time_t
+and
+.BR suseconds_t
+types as described in
+.IR <sys/types.h> .
+.P
+The
+.IR <sys/time.h>
+header shall define the
+.BR fd_set
+type as described in
+.IR <sys/select.h> .
+.P
+The
+.IR <sys/time.h>
+header shall define the following symbolic constants for the
+.IR which
+argument of
+\fIgetitimer\fR()
+and
+\fIsetitimer\fR():
+.IP ITIMER_REAL 14
+Decrements in real time.
+.IP ITIMER_VIRTUAL 14
+Decrements in process virtual time.
+.IP ITIMER_PROF 14
+Decrements both in process virtual time and when the system is running
+on behalf of the process.
+.P
+The
+.IR <sys/time.h>
+header shall define the following as described in
+.IR <sys/select.h> :
+\fIFD_CLR\fR()
+\fIFD_ISSET\fR()
+\fIFD_SET\fR()
+\fIFD_ZERO\fR()
+FD_SETSIZE
+.P
+The following shall be declared as functions and may also be defined
+as macros. Function prototypes shall be provided.
+.sp
+.RS 4
+.nf
+\fB
+int getitimer(int, struct itimerval *);
+int gettimeofday(struct timeval *restrict, void *restrict);
+int setitimer(int, const struct itimerval *restrict,
+ struct itimerval *restrict);
+int select(int, fd_set *restrict, fd_set *restrict, fd_set *restrict,
+ struct timeval *restrict);
+int utimes(const char *, const struct timeval [2]);
+.fi \fR
+.P
+.RE
+.P
+Inclusion of the
+.IR <sys/time.h>
+header may make visible all symbols from the
+.IR <sys/select.h>
+header.
+.LP
+.IR "The following sections are informative."
+.SH "APPLICATION USAGE"
+None.
+.SH RATIONALE
+None.
+.SH "FUTURE DIRECTIONS"
+None.
+.SH "SEE ALSO"
+.IR "\fB<sys_select.h>\fP",
+.IR "\fB<sys_types.h>\fP"
+.P
+The System Interfaces volume of POSIX.1\(hy2008,
+.IR "\fIfutimens\fR\^(\|)",
+.IR "\fIgetitimer\fR\^(\|)",
+.IR "\fIgettimeofday\fR\^(\|)",
+.IR "\fIpselect\fR\^(\|)"
+.SH COPYRIGHT
+Portions of this text are reprinted and reproduced in electronic form
+from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
+-- Portable Operating System Interface (POSIX), The Open Group Base
+Specifications Issue 7, Copyright (C) 2013 by the Institute of
+Electrical and Electronics Engineers, Inc and The Open Group.
+(This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) 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.unix.org/online.html .
+
+Any typographical or formatting errors that appear
+in this page are most likely
+to have been introduced during the conversion of the source files to
+man page format. To report such errors, see
+https://www.kernel.org/doc/man-pages/reporting_bugs.html .