osfmk/kern/task_policy.c

68 static void add_taskwatch_locked(task_t task, task_watch_t * twp);
69 static void remove_taskwatch_locked(task_t task, task_watch_t * twp);
1889 add_taskwatch_locked(task_t task, task_watch_t * twp)
1891 	queue_enter(&task->task_watchers, twp, task_watch_t *, tw_links);
1897 remove_taskwatch_locked(task_t task, task_watch_t * twp)
1899 	queue_remove(&task->task_watchers, twp, task_watch_t *, tw_links);
1910 	task_watch_t *twp = NULL;
1941 		twp = (task_watch_t *)kalloc(sizeof(task_watch_t));
1942 		if (twp == NULL) {
1948 		bzero(twp, sizeof(task_watch_t));
1956 			kfree(twp, sizeof(task_watch_t));
1963 		twp->tw_task = target_task;		/* holds the task reference */
1964 		twp->tw_thread = target_thread;		/* holds the thread reference */
1965 		twp->tw_state = target_task->appstate;
1966 		twp->tw_importance = target_thread->importance;
1968 		add_taskwatch_locked(target_task, twp);
1970 		target_thread->taskwatch = twp;
1981 		/* retain the thread reference as it is in twp */
1986 		if ((twp = target_thread->taskwatch) != NULL) {
1987 			task = twp->tw_task;
1989 			remove_taskwatch_locked(task, twp);
1993 			task_deallocate(task);			/* drop task ref in twp */
1994 			set_thread_appbg(target_thread, 0, twp->tw_importance);
1995 			thread_deallocate(target_thread);	/* drop thread ref in twp */
1996 			kfree(twp, sizeof(task_watch_t));
2027 	task_watch_t * twp;
2057 	queue_iterate(&task->task_watchers, twp, task_watch_t *, tw_links) {
2059 		threadlist[i].thread = twp->tw_thread;
2062 			twp->tw_importance = twp->tw_thread->importance;
2065 			threadlist[i].importance = twp->tw_importance;
2088 	task_watch_t * twp;
2092 	if ((twp = thread->taskwatch) != NULL) {
2094 		remove_taskwatch_locked(twp->tw_task, twp);
2097 	if (twp != NULL) {
2098 		thread_deallocate(twp->tw_thread);
2099 		task_deallocate(twp->tw_task);
2100 		importance = twp->tw_importance;
2101 		kfree(twp, sizeof(task_watch_t));
2112 	task_watch_t * twp = NULL;
2138 	while((twp = (task_watch_t *)dequeue_head(&task->task_watchers)) != NULL)
2140 		twplist[i] = twp;
2147 		twp->tw_thread->taskwatch = NULL;	/* removed linkage, clear thread holding ref */
2157 		twp = twplist[j];
2159 		set_thread_appbg(twp->tw_thread, 0, twp->tw_importance);
2160 		thread_deallocate(twp->tw_thread);
2161 		task_deallocate(twp->tw_task);
2162 		kfree(twp, sizeof(task_watch_t));