system/kernel/sem.cpp

107 		} used;
118 	ThreadQueue			queue;	// should be in u.used, but has a constructor
158 			|| (last != -1 && sem->u.used.last_acquirer != last)
159 			|| (name != NULL && strstr(sem->u.used.name, name) == NULL)
160 			|| (owner != -1 && sem->u.used.owner != owner))
165 			" %s\n", sem, sem->id, sem->u.used.count,
166 			sem->u.used.owner,
167 			sem->u.used.last_acquirer > 0 ? sem->u.used.last_acquirer : 0,
168 			sem->u.used.name);
181 		kprintf("name:    '%s'\n", sem->u.used.name);
182 		kprintf("owner:   %" B_PRId32 "\n", sem->u.used.owner);
183 		kprintf("count:   %" B_PRId32 "\n", sem->u.used.count);
195 		set_debug_variable("_owner", sem->u.used.owner);
199 			sem->u.used.last_acquirer, sem->u.used.last_acquire_count);
201 			sem->u.used.last_releaser, sem->u.used.last_release_count);
203 		if (sem->u.used.last_releaser != 0)
204 			set_debug_variable("_releaser", sem->u.used.last_releaser);
208 		kprintf("last acquired by: %" B_PRId32 "\n", sem->u.used.last_acquirer);
211 		if (sem->u.used.last_acquirer != 0)
212 			set_debug_variable("_acquirer", sem->u.used.last_acquirer);
255 		if (sSems[i].u.used.name != NULL
256 			&& strcmp(argv[1], sSems[i].u.used.name) == 0) {
275 		   is used.
299 	if (sem->u.used.select_infos)
300 		notify_select_events_list(sem->u.used.select_infos, events);
311 	info->team = sem->u.used.owner;
312 	strlcpy(info->name, sem->u.used.name, sizeof(info->name));
313 	info->count = sem->u.used.count;
314 	info->latest_holder = sem->u.used.last_acquirer;
326 	KTRACE("delete_sem(sem: %ld)", sem.u.used.id);
329 	sem.u.used.select_infos = NULL;
339 	*_name = sem.u.used.name;
340 	sem.u.used.name = NULL;
371 		&& sSems[slot].u.used.owner == team_get_kernel_team_id()) {
377 	if (sSems[slot].u.used.owner >= 0) {
378 		list_remove_link(&sSems[slot].u.used.team_link);
379 		sSems[slot].u.used.owner = -1;
510 		sem->u.used.count = count;
511 		sem->u.used.net_count = count;
513 		sem->u.used.name = tempName;
514 		sem->u.used.owner = team->id;
515 		sem->u.used.select_infos = NULL;
518 		list_add_item(&team->sem_list, &sem->u.used.team_link);
553 		&& sSems[slot].u.used.owner == team_get_kernel_team_id()) {
560 			info->next = sSems[slot].u.used.select_infos;
561 			sSems[slot].u.used.select_infos = info;
563 			if (sSems[slot].u.used.count > 0)
586 		select_info** infoLocation = &sSems[slot].u.used.select_infos;
610 	sem->u.used.count += entry->count;
624 			if (entry->count > sem->u.used.net_count)
628 			sem->u.used.net_count -= entry->count;
632 			sem->u.used.count += entry->count;
640 	if (sem->u.used.count > 0)
761 		&& sSems[slot].u.used.owner == team_get_kernel_team_id()) {
770 	if (sSems[slot].u.used.count - count < 0) {
784 	if ((sSems[slot].u.used.count -= count) < 0) {
789 			" name = %s\n", id, sSems[slot].u.used.name, thread, thread->name));
796 			sSems[slot].u.used.count += count;
837 			sSems[slot].u.used.last_acquirer = thread_get_current_thread_id();
839 			sSems[slot].u.used.last_acquire_count = count;
846 			"thread %ld (%s)\n", id, sSems[slot].u.used.name, thread->id,
851 		sSems[slot].u.used.net_count -= count;
852 		sSems[slot].u.used.last_acquirer = thread_get_current_thread_id();
854 		sSems[slot].u.used.last_acquire_count = count;
902 		&& sSems[slot].u.used.owner == team_get_kernel_team_id()) {
911 	sSems[slot].u.used.last_acquirer = -sSems[slot].u.used.last_acquirer;
913 	sSems[slot].u.used.last_releaser = thread_get_current_thread_id();
914 	sSems[slot].u.used.last_release_count = count;
922 		count = sSems[slot].u.used.net_count - sSems[slot].u.used.count;
939 				sSems[slot].u.used.count += count;
940 				sSems[slot].u.used.net_count += count;
949 			if (entry->count > (sSems[slot].u.used.net_count + count)) {
950 				sSems[slot].u.used.count += count;
951 				sSems[slot].u.used.net_count += count;
958 			sSems[slot].u.used.count += delta;
959 			sSems[slot].u.used.net_count += delta - entry->count;
964 			sSems[slot].u.used.count += entry->count;
971 	if (sSems[slot].u.used.count > 0)
1006 	*_count = sSems[slot].u.used.count;
1074 		if (sem->id != -1 && sem->u.used.owner == team->id) {
1117 	list_remove_link(&sSems[slot].u.used.team_link);
1118 	list_add_item(&newTeam->sem_list, &sSems[slot].u.used.team_link);
1120 	sSems[slot].u.used.owner = newTeam->id;
1126 	must make sure that the semaphore remains alive as long as the name is used.
1136 	return sSems[slot].u.used.name;