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hurd: support clock_gettime(CLOCK_PROCESS/THREAD_CPUTIME_ID)

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* sysdeps/mach/clock_gettime.c (__clock_gettime): Add support for
CLOCK_PROCESS_CPUTIME_ID and CLOCK_THREAD_CPUTIME_ID.
This commit is contained in:
Samuel Thibault 2020-10-11 13:59:01 +00:00
parent 81b83ff61f
commit 5a619c1f46
1 changed files with 73 additions and 13 deletions
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86
sysdeps/mach/clock_gettime.c
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@ -25,20 +25,80 @@
int
__clock_gettime (clockid_t clock_id, struct timespec *ts)
{
if (clock_id != CLOCK_REALTIME)
{
errno = EINVAL;
return -1;
}
mach_msg_type_number_t count;
error_t err;
/* __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;
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)