getrusage man page on Archlinux

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GETRUSAGE(3P)		   POSIX Programmer's Manual		 GETRUSAGE(3P)

       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.

       getrusage — get information about resource utilization

       #include <sys/resource.h>

       int getrusage(int who, struct rusage *r_usage);

       The getrusage() function shall provide measures of the  resources  used
       by  the	current	 process  or  its terminated and waited-for child pro‐
       cesses. If the value of the who argument	 is  RUSAGE_SELF,  information
       shall  be  returned about resources used by the current process. If the
       value of the who 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 getrusage().

       The r_usage argument is a pointer to an object of type struct rusage in
       which the returned information is stored.

       Upon successful completion, getrusage() shall return 0;	otherwise,  −1
       shall be returned and errno set to indicate the error.

       The getrusage() function shall fail if:

       EINVAL The value of the who argument is not valid.

       The following sections are informative.

   Using getrusage()
       The  following  example returns information about the resources used by
       the current process.

	   #include <sys/resource.h>
	   int who = RUSAGE_SELF;
	   struct rusage usage;
	   int ret;

	   ret = getrusage(who, &usage);




       exit(), sigaction(), time(), times(), wait()

       The Base Definitions volume of POSIX.1‐2008, <sys_resource.h>

       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 Electri‐
       cal 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 .

       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.ker‐ .

IEEE/The Open Group		     2013			 GETRUSAGE(3P)

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