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/* getrusage -- Get resource usage information about processes. Hurd version.
Copyright (C) 1999-2022 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <string.h>
#include <sys/resource.h>
#include <mach.h>
#include <mach/task_info.h>
#include <hurd.h>
/* Return resource usage information on process indicated by WHO
and put it in *USAGE. Returns 0 for success, -1 for failure. */
int
__getrusage (enum __rusage_who who, struct rusage *usage)
{
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;
}
weak_alias (__getrusage, getrusage)
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