2549 	struct tsync_sibling sibling[TSYNC_SIBLINGS];  in FIXTURE()  local
2571 	memset(&self->sibling, 0, sizeof(self->sibling));  in FIXTURE_SETUP()
2586 	self->sibling[0].tid = 0;  in FIXTURE_SETUP()
2587 	self->sibling[0].cond = &self->cond;  in FIXTURE_SETUP()
2588 	self->sibling[0].started = &self->started;  in FIXTURE_SETUP()
2589 	self->sibling[0].mutex = &self->mutex;  in FIXTURE_SETUP()
2590 	self->sibling[0].diverge = 0;  in FIXTURE_SETUP()
2591 	self->sibling[0].num_waits = 1;  in FIXTURE_SETUP()
2592 	self->sibling[0].prog = &self->root_prog;  in FIXTURE_SETUP()
2593 	self->sibling[0].metadata = _metadata;  in FIXTURE_SETUP()
2594 	self->sibling[1].tid = 0;  in FIXTURE_SETUP()
2595 	self->sibling[1].cond = &self->cond;  in FIXTURE_SETUP()
2596 	self->sibling[1].started = &self->started;  in FIXTURE_SETUP()
2597 	self->sibling[1].mutex = &self->mutex;  in FIXTURE_SETUP()
2598 	self->sibling[1].diverge = 0;  in FIXTURE_SETUP()
2599 	self->sibling[1].prog = &self->root_prog;  in FIXTURE_SETUP()
2600 	self->sibling[1].num_waits = 1;  in FIXTURE_SETUP()
2601 	self->sibling[1].metadata = _metadata;  in FIXTURE_SETUP()
2614 		struct tsync_sibling *s = &self->sibling[sib];  in FIXTURE_TEARDOWN()
2661 void tsync_start_sibling(struct tsync_sibling *sibling)  in tsync_start_sibling()  argument
2663 	pthread_create(&sibling->tid, NULL, tsync_sibling, (void *)sibling);  in tsync_start_sibling()
2695 	self->sibling[0].diverge = 1;  in TEST_F()
2696 	tsync_start_sibling(&self->sibling[0]);  in TEST_F()
2697 	tsync_start_sibling(&self->sibling[1]);  in TEST_F()
2711 	/* Ensure diverging sibling failed to call prctl. */  in TEST_F()
2712 	PTHREAD_JOIN(self->sibling[0].tid, &status);  in TEST_F()
2714 	PTHREAD_JOIN(self->sibling[1].tid, &status);  in TEST_F()
2734 	tsync_start_sibling(&self->sibling[0]);  in TEST_F()
2735 	tsync_start_sibling(&self->sibling[1]);  in TEST_F()
2754 	PTHREAD_JOIN(self->sibling[0].tid, &status);  in TEST_F()
2756 	PTHREAD_JOIN(self->sibling[1].tid, &status);  in TEST_F()
2765 	tsync_start_sibling(&self->sibling[0]);  in TEST_F()
2766 	tsync_start_sibling(&self->sibling[1]);  in TEST_F()
2780 	PTHREAD_JOIN(self->sibling[0].tid, &status);  in TEST_F()
2782 	PTHREAD_JOIN(self->sibling[1].tid, &status);  in TEST_F()
2792 	tsync_start_sibling(&self->sibling[0]);  in TEST_F()
2793 	tsync_start_sibling(&self->sibling[1]);  in TEST_F()
2820 	PTHREAD_JOIN(self->sibling[0].tid, &status);  in TEST_F()
2822 	PTHREAD_JOIN(self->sibling[1].tid, &status);  in TEST_F()
2842 	self->sibling[0].diverge = 1;  in TEST_F()
2843 	tsync_start_sibling(&self->sibling[0]);  in TEST_F()
2844 	tsync_start_sibling(&self->sibling[1]);  in TEST_F()
2853 	ASSERT_EQ(self->sibling[0].system_tid, ret) {  in TEST_F()
2854 		TH_LOG("Did not fail on diverged sibling.");  in TEST_F()
2865 	PTHREAD_JOIN(self->sibling[0].tid, &status);  in TEST_F()
2867 	PTHREAD_JOIN(self->sibling[1].tid, &status);  in TEST_F()
2887 	self->sibling[0].diverge = 1;  in TEST_F()
2888 	tsync_start_sibling(&self->sibling[0]);  in TEST_F()
2889 	tsync_start_sibling(&self->sibling[1]);  in TEST_F()
2900 		TH_LOG("Did not return ESRCH for diverged sibling.");  in TEST_F()
2903 		TH_LOG("Did not fail on diverged sibling.");  in TEST_F()
2914 	PTHREAD_JOIN(self->sibling[0].tid, &status);  in TEST_F()
2916 	PTHREAD_JOIN(self->sibling[1].tid, &status);  in TEST_F()
2931 	 * Sibling 0 will have its own seccomp policy  in TEST_F()
2932 	 * and Sibling 1 will not be under seccomp at  in TEST_F()
2933 	 * all. Sibling 1 will enter seccomp and 0  in TEST_F()
2936 	self->sibling[0].diverge = 1;  in TEST_F()
2937 	tsync_start_sibling(&self->sibling[0]);  in TEST_F()
2938 	tsync_start_sibling(&self->sibling[1]);  in TEST_F()
2955 	ASSERT_EQ(ret, self->sibling[0].system_tid) {  in TEST_F()
2956 		TH_LOG("Did not fail on diverged sibling.");  in TEST_F()
2959 	if (ret == self->sibling[0].system_tid)  in TEST_F()
2967 	self->sibling[!sib].num_waits += 1;  in TEST_F()
2974 	PTHREAD_JOIN(self->sibling[sib].tid, &status);  in TEST_F()
2977 	while (!kill(self->sibling[sib].system_tid, 0))  in TEST_F()
2979 	/* Switch to the remaining sibling */  in TEST_F()
2985 		TH_LOG("Expected the remaining sibling to sync");  in TEST_F()
2990 	/* If remaining sibling didn't have a chance to wake up during  in TEST_F()
2993 	if (self->sibling[sib].num_waits > 1)  in TEST_F()
2994 		self->sibling[sib].num_waits = 1;  in TEST_F()
2999 	PTHREAD_JOIN(self->sibling[sib].tid, &status);  in TEST_F()
3002 	while (!kill(self->sibling[sib].system_tid, 0))  in TEST_F()
3696  * Check that a pid in a sibling (i.e. unrelated) namespace shows up as 0, i.e.
3737 	/* Create the sibling ns, and sibling in it. */  in TEST()
4875 		pthread_t sibling;  in TEST()  local
4881 		ret = pthread_create(&sibling, NULL,  in TEST()