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+.\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved 
+.TH "GETRUSAGE" P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual"
+.\" getrusage 
+.SH NAME
+getrusage \- get information about resource utilization
+.SH SYNOPSIS
+.LP
+\fB#include <sys/resource.h>
+.br
+.sp
+int getrusage(int\fP \fIwho\fP\fB, struct rusage *\fP\fIr_usage\fP\fB);
+\fP
+\fB
+.br
+\fP
+.SH DESCRIPTION
+.LP
+The \fIgetrusage\fP() function shall provide measures of the resources
+used by the current process or its terminated and
+waited-for child processes. If the value of the \fIwho\fP argument
+is RUSAGE_SELF, information shall be returned about resources
+used by the current process. If the value of the \fIwho\fP argument
+is RUSAGE_CHILDREN, information shall be returned about
+resources used by the terminated and waited-for children of the current
+process. If the child is never waited for (for example, if
+the parent has SA_NOCLDWAIT set or sets SIGCHLD to SIG_IGN), the resource
+information for the child process is discarded and not
+included in the resource information provided by \fIgetrusage\fP().
+.LP
+The \fIr_usage\fP argument is a pointer to an object of type \fBstruct
+rusage\fP in which the returned information is
+stored.
+.SH RETURN VALUE
+.LP
+Upon successful completion, \fIgetrusage\fP() shall return 0; otherwise,
+-1 shall be returned and \fIerrno\fP set to indicate
+the error.
+.SH ERRORS
+.LP
+The \fIgetrusage\fP() function shall fail if:
+.TP 7
+.B EINVAL
+The value of the \fIwho\fP argument is not valid.
+.sp
+.LP
+\fIThe following sections are informative.\fP
+.SH EXAMPLES
+.SS Using getrusage()
+.LP
+The following example returns information about the resources used
+by the current process.
+.sp
+.RS
+.nf
+
+\fB#include <sys/resource.h>
+\&...
+int who = RUSAGE_SELF;
+struct rusage usage;
+int ret;
+.sp
+
+ret = getrusage(who, &usage);
+\fP
+.fi
+.RE
+.SH APPLICATION USAGE
+.LP
+None.
+.SH RATIONALE
+.LP
+None.
+.SH FUTURE DIRECTIONS
+.LP
+None.
+.SH SEE ALSO
+.LP
+\fIexit\fP() , \fIsigaction\fP() , \fItime\fP()
+, \fItimes\fP() , \fIwait\fP() , the Base Definitions volume of
+IEEE\ Std\ 1003.1-2001, \fI<sys/resource.h>\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 .