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glibc  2.9
Functions
getrusage.c File Reference
#include <errno.h>
#include <string.h>
#include <sys/resource.h>
#include <mach.h>
#include <mach/task_info.h>
#include <hurd.h>

Go to the source code of this file.

Functions

int __getrusage (enum __rusage_who who, struct rusage *usage)

Function Documentation

int __getrusage ( enum __rusage_who  who,
struct rusage usage 
)

Definition at line 30 of file getrusage.c.

{
  struct task_basic_info bi;
  struct task_events_info ei;
  struct task_thread_times_info tti;
  mach_msg_type_number_t count;
  error_t err;

  switch (who)
    {
    case RUSAGE_SELF:
      count = TASK_BASIC_INFO_COUNT;
      err = __task_info (__mach_task_self (), TASK_BASIC_INFO,
                      (task_info_t) &bi, &count);
      if (err)
       return __hurd_fail (err);

      count = TASK_EVENTS_INFO_COUNT;
      err = __task_info (__mach_task_self (), TASK_EVENTS_INFO,
                      (task_info_t) &ei, &count);
      if (err == KERN_INVALID_ARGUMENT)   /* microkernel doesn't implement it */
       memset (&ei, 0, sizeof ei);
      else if (err)
       return __hurd_fail (err);

      count = TASK_THREAD_TIMES_INFO_COUNT;
      err = __task_info (__mach_task_self (), TASK_THREAD_TIMES_INFO,
                      (task_info_t) &tti, &count);
      if (err)
       return __hurd_fail (err);

      time_value_add (&bi.user_time, &tti.user_time);
      time_value_add (&bi.system_time, &tti.system_time);

      memset (usage, 0, sizeof (struct rusage));

      usage->ru_utime.tv_sec = bi.user_time.seconds;
      usage->ru_utime.tv_usec = bi.user_time.microseconds;
      usage->ru_stime.tv_sec = bi.system_time.seconds;
      usage->ru_stime.tv_usec = bi.system_time.microseconds;

      /* These statistics map only approximately.  */
      usage->ru_majflt = ei.pageins;
      usage->ru_minflt = ei.faults - ei.pageins;
      usage->ru_msgsnd = ei.messages_sent; /* Mach IPC, not SysV IPC */
      usage->ru_msgrcv = ei.messages_received; /* Mach IPC, not SysV IPC */
      break;

    case RUSAGE_CHILDREN:
      /* XXX Not implemented yet.  However, zero out USAGE to be
         consistent with the wait3 and wait4 functions.  */
      memset (usage, 0, sizeof (struct rusage));

      break;

    default:
      return EINVAL;
    }

  return 0;
}

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