92 lines
3.0 KiB
C
92 lines
3.0 KiB
C
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/* getrusage -- Get resource usage information about processes. Hurd version.
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Copyright (C) 1999-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <string.h>
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#include <sys/resource.h>
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#include <mach.h>
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#include <mach/task_info.h>
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#include <hurd.h>
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/* Return resource usage information on process indicated by WHO
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and put it in *USAGE. Returns 0 for success, -1 for failure. */
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int
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__getrusage (enum __rusage_who who, struct rusage *usage)
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{
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struct task_basic_info bi;
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struct task_events_info ei;
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struct task_thread_times_info tti;
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mach_msg_type_number_t count;
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error_t err;
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switch (who)
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{
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case RUSAGE_SELF:
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count = TASK_BASIC_INFO_COUNT;
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err = __task_info (__mach_task_self (), TASK_BASIC_INFO,
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(task_info_t) &bi, &count);
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if (err)
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return __hurd_fail (err);
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count = TASK_EVENTS_INFO_COUNT;
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err = __task_info (__mach_task_self (), TASK_EVENTS_INFO,
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(task_info_t) &ei, &count);
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if (err == KERN_INVALID_ARGUMENT) /* microkernel doesn't implement it */
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memset (&ei, 0, sizeof ei);
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else if (err)
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return __hurd_fail (err);
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count = TASK_THREAD_TIMES_INFO_COUNT;
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err = __task_info (__mach_task_self (), TASK_THREAD_TIMES_INFO,
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(task_info_t) &tti, &count);
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if (err)
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return __hurd_fail (err);
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time_value_add (&bi.user_time, &tti.user_time);
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time_value_add (&bi.system_time, &tti.system_time);
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memset (usage, 0, sizeof (struct rusage));
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usage->ru_utime.tv_sec = bi.user_time.seconds;
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usage->ru_utime.tv_usec = bi.user_time.microseconds;
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usage->ru_stime.tv_sec = bi.system_time.seconds;
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usage->ru_stime.tv_usec = bi.system_time.microseconds;
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/* These statistics map only approximately. */
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usage->ru_majflt = ei.pageins;
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usage->ru_minflt = ei.faults - ei.pageins;
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usage->ru_msgsnd = ei.messages_sent; /* Mach IPC, not SysV IPC */
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usage->ru_msgrcv = ei.messages_received; /* Mach IPC, not SysV IPC */
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break;
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case RUSAGE_CHILDREN:
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/* XXX Not implemented yet. However, zero out USAGE to be
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consistent with the wait3 and wait4 functions. */
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memset (usage, 0, sizeof (struct rusage));
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break;
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default:
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return EINVAL;
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}
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return 0;
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}
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weak_alias (__getrusage, getrusage)
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