system/kernel/sem.cpp

91 		// when slot in use
109 		// when slot unused
242 			uint32 slot = num % sMaxSems;
243 			if (sSems[slot].id != (int)num) {
248 			dump_sem(&sSems[slot]);
268 /*!	\brief Appends a semaphore slot to the free list.
271 	The slot's id field is not changed. It should already be set to -1.
273 	\param slot The index of the semaphore slot.
274 	\param nextID The ID the slot will get when reused. If < 0 the \a slot
278 free_sem_slot(int slot, sem_id nextID)
280 	struct sem_entry *sem = sSems + slot;
283 		sem->u.unused.next_id = slot;
344 	// append slot to the free list
359 	int32 slot = id % sMaxSems;
363 	SpinLocker semLocker(sSems[slot].lock);
365 	if (sSems[slot].id != id) {
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;
386 	uninit_sem_locked(sSems[slot], &name, semLocker);
499 	// get the first slot from the free list
507 		// init the slot
545 	int32 slot = id % sMaxSems;
547 	InterruptsSpinLocker _(&sSems[slot].lock);
549 	if (sSems[slot].id != id) {
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)
581 	int32 slot = id % sMaxSems;
583 	InterruptsSpinLocker _(&sSems[slot].lock);
585 	if (sSems[slot].id == id) {
586 		select_info** infoLocation = &sSems[slot].u.used.select_infos;
730 	int slot = id % sMaxSems;
751 	SpinLocker semLocker(sSems[slot].lock);
753 	if (sSems[slot].id != id) {
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;
812 		sSems[slot].queue.Add(&queueEntry);
834 			remove_thread_from_sem(&queueEntry, &sSems[slot]);
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;
874 	int32 slot = id % sMaxSems;
892 	SpinLocker semLocker(sSems[slot].lock);
894 	if (sSems[slot].id != id) {
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;
936 		queued_thread* entry = sSems[slot].queue.Head();
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;
967 		sSems[slot].queue.Remove(entry);
971 	if (sSems[slot].u.used.count > 0)
972 		notify_sem_select_events(&sSems[slot], B_EVENT_ACQUIRE_SEMAPHORE);
997 	int slot = id % sMaxSems;
999 	InterruptsSpinLocker _(sSems[slot].lock);
1001 	if (sSems[slot].id != id) {
1006 	*_count = sSems[slot].u.used.count;
1023 	int slot = id % sMaxSems;
1025 	InterruptsSpinLocker _(sSems[slot].lock);
1027 	if (sSems[slot].id != id) {
1031 		fill_sem_info(&sSems[slot], info, size);
1101 	int32 slot = id % sMaxSems;
1110 	SpinLocker semLocker(sSems[slot].lock);
1112 	if (sSems[slot].id != 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;
1131 	int slot = id % sMaxSems;
1133 	if (sSemsActive == false || id < 0 || sSems[slot].id != id)
1136 	return sSems[slot].u.used.name;