[hurd,commited] hurd: support clock_gettime(CLOCK_PROCESS/THREAD_CPUTIME_ID)
Commit Message
* sysdeps/mach/clock_gettime.c (__clock_gettime): Add support for
CLOCK_PROCESS_CPUTIME_ID and CLOCK_THREAD_CPUTIME_ID.
---
sysdeps/mach/clock_gettime.c | 88 ++++++++++++++++++++++++++++++------
1 file changed, 74 insertions(+), 14 deletions(-)
@@ -25,20 +25,80 @@
int
__clock_gettime (clockid_t clock_id, struct timespec *ts)
{
- if (clock_id != CLOCK_REALTIME)
- {
- errno = EINVAL;
- return -1;
- }
-
- /* __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;
+ 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)