mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-12 14:20:13 +00:00
5a619c1f46
* sysdeps/mach/clock_gettime.c (__clock_gettime): Add support for CLOCK_PROCESS_CPUTIME_ID and CLOCK_THREAD_CPUTIME_ID.
126 lines
3.4 KiB
C
126 lines
3.4 KiB
C
/* Copyright (C) 1991-2020 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 <time.h>
|
|
#include <mach.h>
|
|
#include <shlib-compat.h>
|
|
|
|
/* Get the current time of day, putting it into *TS.
|
|
Returns 0 on success, -1 on errors. */
|
|
int
|
|
__clock_gettime (clockid_t clock_id, struct timespec *ts)
|
|
{
|
|
mach_msg_type_number_t count;
|
|
error_t err;
|
|
|
|
switch (clock_id) {
|
|
|
|
case CLOCK_REALTIME:
|
|
{
|
|
/* __host_get_time can only fail if passed an invalid host_t.
|
|
__mach_host_self could theoretically fail (producing an
|
|
invalid host_t) due to resource exhaustion, but we assume
|
|
this will never happen. */
|
|
time_value_t tv;
|
|
__host_get_time (__mach_host_self (), &tv);
|
|
TIME_VALUE_TO_TIMESPEC (&tv, ts);
|
|
return 0;
|
|
}
|
|
|
|
case CLOCK_PROCESS_CPUTIME_ID:
|
|
{
|
|
struct time_value t = { .seconds = 0, .microseconds = 0 };
|
|
struct task_basic_info bi;
|
|
struct task_thread_times_info tti;
|
|
|
|
/* Dead threads CPU time. */
|
|
count = TASK_BASIC_INFO_COUNT;
|
|
err = __task_info (__mach_task_self (), TASK_BASIC_INFO,
|
|
(task_info_t) &bi, &count);
|
|
if (err)
|
|
{
|
|
__set_errno(err);
|
|
return -1;
|
|
}
|
|
time_value_add (&t, &bi.user_time);
|
|
time_value_add (&t, &bi.system_time);
|
|
|
|
/* Live threads CPU time. */
|
|
count = TASK_EVENTS_INFO_COUNT;
|
|
err = __task_info (__mach_task_self (), TASK_THREAD_TIMES_INFO,
|
|
(task_info_t) &tti, &count);
|
|
if (err)
|
|
{
|
|
__set_errno(err);
|
|
return -1;
|
|
}
|
|
time_value_add (&t, &tti.user_time);
|
|
time_value_add (&t, &tti.system_time);
|
|
|
|
TIME_VALUE_TO_TIMESPEC(&t, ts);
|
|
return 0;
|
|
}
|
|
|
|
case CLOCK_THREAD_CPUTIME_ID:
|
|
{
|
|
struct thread_basic_info bi;
|
|
mach_port_t self = __mach_thread_self ();
|
|
|
|
count = THREAD_BASIC_INFO_COUNT;
|
|
err = __thread_info (self, THREAD_BASIC_INFO,
|
|
(thread_info_t) &bi, &count);
|
|
__mach_port_deallocate (__mach_task_self (), self);
|
|
if (err)
|
|
{
|
|
__set_errno(err);
|
|
return -1;
|
|
}
|
|
time_value_add (&bi.user_time, &bi.system_time);
|
|
|
|
TIME_VALUE_TO_TIMESPEC(&bi.user_time, ts);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
errno = EINVAL;
|
|
return -1;
|
|
}
|
|
libc_hidden_def (__clock_gettime)
|
|
|
|
versioned_symbol (libc, __clock_gettime, clock_gettime, GLIBC_2_17);
|
|
/* clock_gettime moved to libc in version 2.17;
|
|
old binaries may expect the symbol version it had in librt. */
|
|
#if SHLIB_COMPAT (libc, GLIBC_2_2, GLIBC_2_17)
|
|
strong_alias (__clock_gettime, __clock_gettime_2);
|
|
compat_symbol (libc, __clock_gettime_2, clock_gettime, GLIBC_2_2);
|
|
#endif
|
|
|
|
int
|
|
__clock_gettime64 (clockid_t clock_id, struct __timespec64 *ts64)
|
|
{
|
|
struct timespec ts;
|
|
int ret;
|
|
|
|
ret = __clock_gettime (clock_id, &ts);
|
|
if (ret == 0)
|
|
*ts64 = valid_timespec_to_timespec64 (ts);
|
|
|
|
return ret;
|
|
}
|
|
libc_hidden_def (__clock_gettime64)
|