1 // SPDX-License-Identifier: GPL-2.0-only
12 #include <signal.h>
66 	diff = end.tv_usec - start.tv_usec;  in check_diff()
67 	diff += (end.tv_sec - start.tv_sec) * USECS_PER_SEC;  in check_diff()
69 	if (abs(diff - DELAY * USECS_PER_SEC) > USECS_PER_SEC / 2) {  in check_diff()
71 		return -1;  in check_diff()
93 		return -1;  in check_itimer()
98 		signal(SIGVTALRM, sig_handler);  in check_itimer()
100 		signal(SIGPROF, sig_handler);  in check_itimer()
102 		signal(SIGALRM, sig_handler);  in check_itimer()
107 		return -1;  in check_itimer()
113 		return -1;  in check_itimer()
126 		return -1;  in check_itimer()
138 	timer_t id;  in check_timer_create()  local
150 		return -1;  in check_timer_create()
154 	err = timer_create(which, NULL, &id);  in check_timer_create()
157 		return -1;  in check_timer_create()
159 	signal(SIGALRM, sig_handler);  in check_timer_create()
164 		return -1;  in check_timer_create()
167 	err = timer_settime(id, 0, &val, NULL);  in check_timer_create()
170 		return -1;  in check_timer_create()
178 		return -1;  in check_timer_create()
209 	timer_t id;  in check_timer_distribution()  local
220 	signal(SIGALRM, distribution_handler);  in check_timer_distribution()
221 	err = timer_create(CLOCK_PROCESS_CPUTIME_ID, NULL, &id);  in check_timer_distribution()
224 		return -1;  in check_timer_distribution()
226 	err = timer_settime(id, 0, &val, NULL);  in check_timer_distribution()
229 		return -1;  in check_timer_distribution()
238 			return -1;  in check_timer_distribution()
242 	/* Wait for all threads to receive the signal. */  in check_timer_distribution()
250 			return -1;  in check_timer_distribution()
254 	if (timer_delete(id)) {  in check_timer_distribution()
256 		return -1;  in check_timer_distribution()