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/*
* COPYRIGHT (c) 1989-2010.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <sys/resource.h>
#include <errno.h>
#include <rtems.h>
#include <rtems/seterr.h>
int getrusage(int who, struct rusage *usage)
{
struct timespec uptime;
struct timeval rtime;
if ( !usage )
rtems_set_errno_and_return_minus_one( EFAULT );
/*
* RTEMS only has a single process so there are no children.
* The single process has been running since the system
* was booted and since there is no distinction between system
* and user time, we will just report the uptime.
*/
if (who == RUSAGE_SELF) {
rtems_clock_get_uptime( &uptime );
rtime.tv_sec = uptime.tv_sec;
rtime.tv_usec = uptime.tv_nsec / 1000;
usage->ru_utime = rtime;
usage->ru_stime = rtime;
return 0;
}
if (who == RUSAGE_CHILDREN) {
rtems_set_errno_and_return_minus_one( ENOSYS );
}
rtems_set_errno_and_return_minus_one( EINVAL );
}
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