--- libaitsched/src/tasks.c	2012/05/31 14:17:59	1.8.2.1
+++ libaitsched/src/tasks.c	2012/08/22 10:38:21	1.13.2.2
@@ -3,7 +3,7 @@
 *  by Michael Pounov <misho@openbsd-bg.org>
 *
 * $Author: misho $
-* $Id: tasks.c,v 1.8.2.1 2012/05/31 14:17:59 misho Exp $
+* $Id: tasks.c,v 1.13.2.2 2012/08/22 10:38:21 misho Exp $
 *
 **************************************************************************
 The ELWIX and AITNET software is distributed under the following
@@ -46,10 +46,14 @@ SUCH DAMAGE.
 #include "global.h"
 
 
-#pragma GCC visibility push(hidden)
-
+/*
+ * sched_useTask() - Get and init new task
+ *
+ * @root = root task
+ * return: NULL error or !=NULL prepared task
+ */
 inline sched_task_t *
-_sched_useTask(sched_root_task_t * __restrict root)
+sched_useTask(sched_root_task_t * __restrict root)
 {
 	sched_task_t *task, *tmp;
 
@@ -74,18 +78,26 @@ _sched_useTask(sched_root_task_t * __restrict root)
 		}
 	}
 
+	memset(task, 0, sizeof(sched_task_t));
+	task->task_id = (uintptr_t) task;
 	return task;
 }
 
+/*
+ * sched_unuseTask() - Unlock and put task to unuse queue
+ *
+ * @task = task
+ * return: always is NULL
+ */
 inline sched_task_t *
-_sched_unuseTask(sched_task_t * __restrict task)
+sched_unuseTask(sched_task_t * __restrict task)
 {
 	TASK_UNLOCK(task);
 	TASK_TYPE(task) = taskUNUSE;
 #ifdef HAVE_LIBPTHREAD
 	pthread_mutex_lock(&TASK_ROOT(task)->root_mtx[taskUNUSE]);
 #endif
-	TAILQ_INSERT_TAIL(&TASK_ROOT(task)->root_unuse, task, task_node);
+	TAILQ_INSERT_TAIL(&TASK_ROOT(task)->root_unuse, TASK_ID(task), task_node);
 #ifdef HAVE_LIBPTHREAD
 	pthread_mutex_unlock(&TASK_ROOT(task)->root_mtx[taskUNUSE]);
 #endif
@@ -94,9 +106,58 @@ _sched_unuseTask(sched_task_t * __restrict task)
 	return task;
 }
 
+#pragma GCC visibility push(hidden)
+
+void *
+_sched_threadJoin(sched_task_t *task)
+{
+	void *ret = NULL;
+
+	if (!task)
+		return NULL;
+
+#ifdef HAVE_LIBPTHREAD
+	pthread_join((pthread_t) TASK_VAL(task), &ret);
+	TASK_ROOT(task)->root_ret = ret;
+#endif
+
+	return NULL;
+}
+
 #pragma GCC visibility pop
 
+/*
+ * sched_taskExit() - Exit routine for scheduler task, explicit required for thread tasks
+ *
+ * @task = current task
+ * @retcode = return code
+ * return: return code
+ */
+inline void *
+sched_taskExit(sched_task_t *task, intptr_t retcode)
+{
+	if (!task || !TASK_ROOT(task))
+		return (void*) -1;
 
+	if (TASK_ROOT(task)->root_hooks.hook_exec.exit)
+		TASK_ROOT(task)->root_hooks.hook_exec.exit(task, (void*) retcode);
+
+	TASK_ROOT(task)->root_ret = (void*) retcode;
+
+#ifdef HAVE_LIBPTHREAD
+	if (TASK_TYPE(task) == taskTHREAD) {
+		if (TASK_FLAG(task) == PTHREAD_CREATE_JOINABLE)	/* joinable thread */
+			schedTask(TASK_ROOT(task), _sched_threadJoin, TASK_ARG(task),
+					TASK_VAL(task), TASK_DATA(task), TASK_DATLEN(task));
+		sched_unuseTask(task);
+		pthread_exit((void*) retcode);
+	}
+#endif
+
+	return (void*) retcode;
+}
+
+
 /*
  * schedRead() - Add READ I/O task to scheduler queue
  *
@@ -119,12 +180,9 @@ schedRead(sched_root_task_t * __restrict root, sched_t
 		return NULL;
 
 	/* get new task */
-	if (!(task = _sched_useTask(root)))
+	if (!(task = sched_useTask(root)))
 		return NULL;
 
-	memset(task, 0, sizeof(sched_task_t));
-	task->task_id = 0;
-	task->task_lock = 0;
 	task->task_func = func;
 	TASK_TYPE(task) = taskREAD;
 	TASK_ROOT(task) = root;
@@ -144,12 +202,12 @@ schedRead(sched_root_task_t * __restrict root, sched_t
 #ifdef HAVE_LIBPTHREAD
 		pthread_mutex_lock(&root->root_mtx[taskREAD]);
 #endif
-		TAILQ_INSERT_TAIL(&root->root_read, task, task_node);
+		TAILQ_INSERT_TAIL(&root->root_read, TASK_ID(task), task_node);
 #ifdef HAVE_LIBPTHREAD
 		pthread_mutex_unlock(&root->root_mtx[taskREAD]);
 #endif
 	} else
-		task = _sched_unuseTask(task);
+		task = sched_unuseTask(task);
 
 	return task;
 }
@@ -176,12 +234,9 @@ schedWrite(sched_root_task_t * __restrict root, sched_
 		return NULL;
 
 	/* get new task */
-	if (!(task = _sched_useTask(root)))
+	if (!(task = sched_useTask(root)))
 		return NULL;
 
-	memset(task, 0, sizeof(sched_task_t));
-	task->task_id = 0;
-	task->task_lock = 0;
 	task->task_func = func;
 	TASK_TYPE(task) = taskWRITE;
 	TASK_ROOT(task) = root;
@@ -201,12 +256,12 @@ schedWrite(sched_root_task_t * __restrict root, sched_
 #ifdef HAVE_LIBPTHREAD
 		pthread_mutex_lock(&root->root_mtx[taskWRITE]);
 #endif
-		TAILQ_INSERT_TAIL(&root->root_write, task, task_node);
+		TAILQ_INSERT_TAIL(&root->root_write, TASK_ID(task), task_node);
 #ifdef HAVE_LIBPTHREAD
 		pthread_mutex_unlock(&root->root_mtx[taskWRITE]);
 #endif
 	} else
-		task = _sched_unuseTask(task);
+		task = sched_unuseTask(task);
 
 	return task;
 }
@@ -233,12 +288,9 @@ schedNode(sched_root_task_t * __restrict root, sched_t
 		return NULL;
 
 	/* get new task */
-	if (!(task = _sched_useTask(root)))
+	if (!(task = sched_useTask(root)))
 		return NULL;
 
-	memset(task, 0, sizeof(sched_task_t));
-	task->task_id = 0;
-	task->task_lock = 0;
 	task->task_func = func;
 	TASK_TYPE(task) = taskNODE;
 	TASK_ROOT(task) = root;
@@ -258,12 +310,12 @@ schedNode(sched_root_task_t * __restrict root, sched_t
 #ifdef HAVE_LIBPTHREAD
 		pthread_mutex_lock(&root->root_mtx[taskNODE]);
 #endif
-		TAILQ_INSERT_TAIL(&root->root_node, task, task_node);
+		TAILQ_INSERT_TAIL(&root->root_node, TASK_ID(task), task_node);
 #ifdef HAVE_LIBPTHREAD
 		pthread_mutex_unlock(&root->root_mtx[taskNODE]);
 #endif
 	} else
-		task = _sched_unuseTask(task);
+		task = sched_unuseTask(task);
 
 	return task;
 }
@@ -290,12 +342,9 @@ schedProc(sched_root_task_t * __restrict root, sched_t
 		return NULL;
 
 	/* get new task */
-	if (!(task = _sched_useTask(root)))
+	if (!(task = sched_useTask(root)))
 		return NULL;
 
-	memset(task, 0, sizeof(sched_task_t));
-	task->task_id = 0;
-	task->task_lock = 0;
 	task->task_func = func;
 	TASK_TYPE(task) = taskPROC;
 	TASK_ROOT(task) = root;
@@ -315,12 +364,12 @@ schedProc(sched_root_task_t * __restrict root, sched_t
 #ifdef HAVE_LIBPTHREAD
 		pthread_mutex_lock(&root->root_mtx[taskPROC]);
 #endif
-		TAILQ_INSERT_TAIL(&root->root_proc, task, task_node);
+		TAILQ_INSERT_TAIL(&root->root_proc, TASK_ID(task), task_node);
 #ifdef HAVE_LIBPTHREAD
 		pthread_mutex_unlock(&root->root_mtx[taskPROC]);
 #endif
 	} else
-		task = _sched_unuseTask(task);
+		task = sched_unuseTask(task);
 
 	return task;
 }
@@ -333,13 +382,17 @@ schedProc(sched_root_task_t * __restrict root, sched_t
  * @arg = 1st func argument
  * @id = Trigger ID
  * @opt_data = Optional data
- * @opt_dlen = Optional data length
+ * @opt_dlen = Optional user's trigger flags
  * return: NULL error or !=NULL new queued task
  */
 sched_task_t *
 schedUser(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg, u_long id, 
 		void *opt_data, size_t opt_dlen)
 {
+#ifndef EVFILT_USER
+	sched_SetErr(ENOTSUP, "Not supported kevent() filter");
+	return NULL;
+#else
 	sched_task_t *task;
 	void *ptr;
 
@@ -347,12 +400,9 @@ schedUser(sched_root_task_t * __restrict root, sched_t
 		return NULL;
 
 	/* get new task */
-	if (!(task = _sched_useTask(root)))
+	if (!(task = sched_useTask(root)))
 		return NULL;
 
-	memset(task, 0, sizeof(sched_task_t));
-	task->task_id = 0;
-	task->task_lock = 0;
 	task->task_func = func;
 	TASK_TYPE(task) = taskUSER;
 	TASK_ROOT(task) = root;
@@ -372,14 +422,15 @@ schedUser(sched_root_task_t * __restrict root, sched_t
 #ifdef HAVE_LIBPTHREAD
 		pthread_mutex_lock(&root->root_mtx[taskUSER]);
 #endif
-		TAILQ_INSERT_TAIL(&root->root_user, task, task_node);
+		TAILQ_INSERT_TAIL(&root->root_user, TASK_ID(task), task_node);
 #ifdef HAVE_LIBPTHREAD
 		pthread_mutex_unlock(&root->root_mtx[taskUSER]);
 #endif
 	} else
-		task = _sched_unuseTask(task);
+		task = sched_unuseTask(task);
 
 	return task;
+#endif
 }
 
 /*
@@ -404,12 +455,9 @@ schedSignal(sched_root_task_t * __restrict root, sched
 		return NULL;
 
 	/* get new task */
-	if (!(task = _sched_useTask(root)))
+	if (!(task = sched_useTask(root)))
 		return NULL;
 
-	memset(task, 0, sizeof(sched_task_t));
-	task->task_id = 0;
-	task->task_lock = 0;
 	task->task_func = func;
 	TASK_TYPE(task) = taskSIGNAL;
 	TASK_ROOT(task) = root;
@@ -429,12 +477,12 @@ schedSignal(sched_root_task_t * __restrict root, sched
 #ifdef HAVE_LIBPTHREAD
 		pthread_mutex_lock(&root->root_mtx[taskSIGNAL]);
 #endif
-		TAILQ_INSERT_TAIL(&root->root_signal, task, task_node);
+		TAILQ_INSERT_TAIL(&root->root_signal, TASK_ID(task), task_node);
 #ifdef HAVE_LIBPTHREAD
 		pthread_mutex_unlock(&root->root_mtx[taskSIGNAL]);
 #endif
 	} else
-		task = _sched_unuseTask(task);
+		task = sched_unuseTask(task);
 
 	return task;
 }
@@ -461,12 +509,9 @@ schedAlarm(sched_root_task_t * __restrict root, sched_
 		return NULL;
 
 	/* get new task */
-	if (!(task = _sched_useTask(root)))
+	if (!(task = sched_useTask(root)))
 		return NULL;
 
-	memset(task, 0, sizeof(sched_task_t));
-	task->task_id = 0;
-	task->task_lock = 0;
 	task->task_func = func;
 	TASK_TYPE(task) = taskALARM;
 	TASK_ROOT(task) = root;
@@ -486,17 +531,381 @@ schedAlarm(sched_root_task_t * __restrict root, sched_
 #ifdef HAVE_LIBPTHREAD
 		pthread_mutex_lock(&root->root_mtx[taskALARM]);
 #endif
-		TAILQ_INSERT_TAIL(&root->root_alarm, task, task_node);
+		TAILQ_INSERT_TAIL(&root->root_alarm, TASK_ID(task), task_node);
 #ifdef HAVE_LIBPTHREAD
 		pthread_mutex_unlock(&root->root_mtx[taskALARM]);
 #endif
 	} else
-		task = _sched_unuseTask(task);
+		task = sched_unuseTask(task);
 
 	return task;
 }
 
+#ifdef AIO_SUPPORT
 /*
+ * schedAIO() - Add AIO task to scheduler queue
+ *
+ * @root = root task
+ * @func = task execution function
+ * @arg = 1st func argument
+ * @acb = AIO cb structure address
+ * @opt_data = Optional data
+ * @opt_dlen = Optional data length
+ * return: NULL error or !=NULL new queued task
+ */
+sched_task_t *
+schedAIO(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg, 
+		struct aiocb * __restrict acb, void *opt_data, size_t opt_dlen)
+{
+	sched_task_t *task;
+	void *ptr;
+
+	if (!root || !func || !acb || !opt_dlen)
+		return NULL;
+
+	/* get new task */
+	if (!(task = sched_useTask(root)))
+		return NULL;
+
+	task->task_func = func;
+	TASK_TYPE(task) = taskAIO;
+	TASK_ROOT(task) = root;
+
+	TASK_ARG(task) = arg;
+	TASK_VAL(task) = (u_long) acb;
+
+	TASK_DATA(task) = opt_data;
+	TASK_DATLEN(task) = opt_dlen;
+
+	if (root->root_hooks.hook_add.aio)
+		ptr = root->root_hooks.hook_add.aio(task, NULL);
+	else
+		ptr = NULL;
+
+	if (!ptr) {
+#ifdef HAVE_LIBPTHREAD
+		pthread_mutex_lock(&root->root_mtx[taskAIO]);
+#endif
+		TAILQ_INSERT_TAIL(&root->root_aio, TASK_ID(task), task_node);
+#ifdef HAVE_LIBPTHREAD
+		pthread_mutex_unlock(&root->root_mtx[taskAIO]);
+#endif
+	} else
+		task = sched_unuseTask(task);
+
+	return task;
+}
+
+/*
+ * schedAIORead() - Add AIO read task to scheduler queue
+ *
+ * @root = root task
+ * @func = task execution function
+ * @arg = 1st func argument
+ * @fd = file descriptor
+ * @buffer = Buffer
+ * @buflen = Buffer length
+ * @offset = Offset from start of file, if =-1 from current position
+ * return: NULL error or !=NULL new queued task
+ */
+inline sched_task_t *
+schedAIORead(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg, int fd, 
+		void *buffer, size_t buflen, off_t offset)
+{
+	struct aiocb *acb;
+	off_t off;
+
+	if (!root || !func || !buffer || !buflen)
+		return NULL;
+
+	if (offset == (off_t) -1) {
+		off = lseek(fd, 0, SEEK_CUR);
+		if (off == -1) {
+			LOGERR;
+			return NULL;
+		}
+	} else
+		off = offset;
+
+	if (!(acb = malloc(sizeof(struct aiocb)))) {
+		LOGERR;
+		return NULL;
+	} else
+		memset(acb, 0, sizeof(struct aiocb));
+
+	acb->aio_fildes = fd;
+	acb->aio_nbytes = buflen;
+	acb->aio_buf = buffer;
+	acb->aio_offset = off;
+	acb->aio_sigevent.sigev_notify = SIGEV_KEVENT;
+	acb->aio_sigevent.sigev_notify_kqueue = root->root_kq;
+	acb->aio_sigevent.sigev_value.sival_ptr = acb;
+
+	if (aio_read(acb)) {
+		LOGERR;
+		free(acb);
+		return NULL;
+	}
+
+	return schedAIO(root, func, arg, acb, buffer, buflen);
+}
+
+/*
+ * schedAIOWrite() - Add AIO write task to scheduler queue
+ *
+ * @root = root task
+ * @func = task execution function
+ * @arg = 1st func argument
+ * @fd = file descriptor
+ * @buffer = Buffer
+ * @buflen = Buffer length
+ * @offset = Offset from start of file, if =-1 from current position
+ * return: NULL error or !=NULL new queued task
+ */
+inline sched_task_t *
+schedAIOWrite(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg, int fd, 
+		void *buffer, size_t buflen, off_t offset)
+{
+	struct aiocb *acb;
+	off_t off;
+
+	if (!root || !func || !buffer || !buflen)
+		return NULL;
+
+	if (offset == (off_t) -1) {
+		off = lseek(fd, 0, SEEK_CUR);
+		if (off == -1) {
+			LOGERR;
+			return NULL;
+		}
+	} else
+		off = offset;
+
+	if (!(acb = malloc(sizeof(struct aiocb)))) {
+		LOGERR;
+		return NULL;
+	} else
+		memset(acb, 0, sizeof(struct aiocb));
+
+	acb->aio_fildes = fd;
+	acb->aio_nbytes = buflen;
+	acb->aio_buf = buffer;
+	acb->aio_offset = off;
+	acb->aio_sigevent.sigev_notify = SIGEV_KEVENT;
+	acb->aio_sigevent.sigev_notify_kqueue = root->root_kq;
+	acb->aio_sigevent.sigev_value.sival_ptr = acb;
+
+	if (aio_write(acb)) {
+		LOGERR;
+		free(acb);
+		return NULL;
+	}
+
+	return schedAIO(root, func, arg, acb, buffer, buflen);
+}
+
+#ifdef EVFILT_LIO
+/*
+ * schedLIO() - Add AIO bulk tasks to scheduler queue
+ *
+ * @root = root task
+ * @func = task execution function
+ * @arg = 1st func argument
+ * @acbs = AIO cb structure addresses
+ * @opt_data = Optional data
+ * @opt_dlen = Optional data length
+ * return: NULL error or !=NULL new queued task
+ */
+sched_task_t *
+schedLIO(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg, 
+		struct aiocb ** __restrict acbs, void *opt_data, size_t opt_dlen)
+{
+	sched_task_t *task;
+	void *ptr;
+
+	if (!root || !func || !acbs || !opt_dlen)
+		return NULL;
+
+	/* get new task */
+	if (!(task = sched_useTask(root)))
+		return NULL;
+
+	task->task_func = func;
+	TASK_TYPE(task) = taskLIO;
+	TASK_ROOT(task) = root;
+
+	TASK_ARG(task) = arg;
+	TASK_VAL(task) = (u_long) acbs;
+
+	TASK_DATA(task) = opt_data;
+	TASK_DATLEN(task) = opt_dlen;
+
+	if (root->root_hooks.hook_add.lio)
+		ptr = root->root_hooks.hook_add.lio(task, NULL);
+	else
+		ptr = NULL;
+
+	if (!ptr) {
+#ifdef HAVE_LIBPTHREAD
+		pthread_mutex_lock(&root->root_mtx[taskLIO]);
+#endif
+		TAILQ_INSERT_TAIL(&root->root_lio, TASK_ID(task), task_node);
+#ifdef HAVE_LIBPTHREAD
+		pthread_mutex_unlock(&root->root_mtx[taskLIO]);
+#endif
+	} else
+		task = sched_unuseTask(task);
+
+	return task;
+}
+
+/*
+ * schedLIORead() - Add list of AIO read tasks to scheduler queue
+ *
+ * @root = root task
+ * @func = task execution function
+ * @arg = 1st func argument
+ * @fd = file descriptor
+ * @bufs = Buffer's list
+ * @nbufs = Number of Buffers
+ * @offset = Offset from start of file, if =-1 from current position
+ * return: NULL error or !=NULL new queued task
+ */
+sched_task_t *
+schedLIORead(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg, int fd, 
+		struct iovec *bufs, size_t nbufs, off_t offset)
+{
+	struct sigevent sig;
+	struct aiocb **acb;
+	off_t off;
+	register int i;
+
+	if (!root || !func || !bufs || !nbufs)
+		return NULL;
+
+	if (offset == (off_t) -1) {
+		off = lseek(fd, 0, SEEK_CUR);
+		if (off == -1) {
+			LOGERR;
+			return NULL;
+		}
+	} else
+		off = offset;
+
+	if (!(acb = calloc(sizeof(void*), nbufs))) {
+		LOGERR;
+		return NULL;
+	} else
+		memset(acb, 0, sizeof(void*) * nbufs);
+	for (i = 0; i < nbufs; off += bufs[i++].iov_len) {
+		acb[i] = malloc(sizeof(struct aiocb));
+		if (!acb[i]) {
+			LOGERR;
+			for (i = 0; i < nbufs; i++)
+				if (acb[i])
+					free(acb[i]);
+			free(acb);
+			return NULL;
+		} else
+			memset(acb[i], 0, sizeof(struct aiocb));
+		acb[i]->aio_fildes = fd;
+		acb[i]->aio_nbytes = bufs[i].iov_len;
+		acb[i]->aio_buf = bufs[i].iov_base;
+		acb[i]->aio_offset = off;
+		acb[i]->aio_lio_opcode = LIO_READ;
+	}
+	memset(&sig, 0, sizeof sig);
+	sig.sigev_notify = SIGEV_KEVENT;
+	sig.sigev_notify_kqueue = root->root_kq;
+	sig.sigev_value.sival_ptr = acb;
+
+	if (lio_listio(LIO_NOWAIT, acb, nbufs, &sig)) {
+		LOGERR;
+		for (i = 0; i < nbufs; i++)
+			if (acb[i])
+				free(acb[i]);
+		free(acb);
+		return NULL;
+	}
+
+	return schedLIO(root, func, arg, (void*) acb, bufs, nbufs);
+}
+
+/*
+ * schedLIOWrite() - Add list of AIO write tasks to scheduler queue
+ *
+ * @root = root task
+ * @func = task execution function
+ * @arg = 1st func argument
+ * @fd = file descriptor
+ * @bufs = Buffer's list
+ * @nbufs = Number of Buffers
+ * @offset = Offset from start of file, if =-1 from current position
+ * return: NULL error or !=NULL new queued task
+ */
+inline sched_task_t *
+schedLIOWrite(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg, int fd, 
+		struct iovec *bufs, size_t nbufs, off_t offset)
+{
+	struct sigevent sig;
+	struct aiocb **acb;
+	off_t off;
+	register int i;
+
+	if (!root || !func || !bufs || !nbufs)
+		return NULL;
+
+	if (offset == (off_t) -1) {
+		off = lseek(fd, 0, SEEK_CUR);
+		if (off == -1) {
+			LOGERR;
+			return NULL;
+		}
+	} else
+		off = offset;
+
+	if (!(acb = calloc(sizeof(void*), nbufs))) {
+		LOGERR;
+		return NULL;
+	} else
+		memset(acb, 0, sizeof(void*) * nbufs);
+	for (i = 0; i < nbufs; off += bufs[i++].iov_len) {
+		acb[i] = malloc(sizeof(struct aiocb));
+		if (!acb[i]) {
+			LOGERR;
+			for (i = 0; i < nbufs; i++)
+				if (acb[i])
+					free(acb[i]);
+			free(acb);
+			return NULL;
+		} else
+			memset(acb[i], 0, sizeof(struct aiocb));
+		acb[i]->aio_fildes = fd;
+		acb[i]->aio_nbytes = bufs[i].iov_len;
+		acb[i]->aio_buf = bufs[i].iov_base;
+		acb[i]->aio_offset = off;
+		acb[i]->aio_lio_opcode = LIO_WRITE;
+	}
+	memset(&sig, 0, sizeof sig);
+	sig.sigev_notify = SIGEV_KEVENT;
+	sig.sigev_notify_kqueue = root->root_kq;
+	sig.sigev_value.sival_ptr = acb;
+
+	if (lio_listio(LIO_NOWAIT, acb, nbufs, &sig)) {
+		LOGERR;
+		for (i = 0; i < nbufs; i++)
+			if (acb[i])
+				free(acb[i]);
+		free(acb);
+		return NULL;
+	}
+
+	return schedLIO(root, func, arg, (void*) acb, bufs, nbufs);
+}
+#endif	/* EVFILT_LIO */
+#endif	/* AIO_SUPPORT */
+
+/*
  * schedTimer() - Add TIMER task to scheduler queue
  *
  * @root = root task
@@ -511,7 +920,7 @@ sched_task_t *
 schedTimer(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg, struct timespec ts, 
 		void *opt_data, size_t opt_dlen)
 {
-	sched_task_t *task, *t = NULL;
+	sched_task_t *task, *tmp, *t = NULL;
 	void *ptr;
 	struct timespec now;
 
@@ -519,12 +928,9 @@ schedTimer(sched_root_task_t * __restrict root, sched_
 		return NULL;
 
 	/* get new task */
-	if (!(task = _sched_useTask(root)))
+	if (!(task = sched_useTask(root)))
 		return NULL;
 
-	memset(task, 0, sizeof(sched_task_t));
-	task->task_id = 0;
-	task->task_lock = 0;
 	task->task_func = func;
 	TASK_TYPE(task) = taskTIMER;
 	TASK_ROOT(task) = root;
@@ -557,21 +963,21 @@ schedTimer(sched_root_task_t * __restrict root, sched_
 		pthread_mutex_lock(&root->root_mtx[taskTIMER]);
 #endif
 #ifdef TIMER_WITHOUT_SORT
-		TAILQ_INSERT_TAIL(&root->root_timer, task, task_node);
+		TAILQ_INSERT_TAIL(&root->root_timer, TASK_ID(task), task_node);
 #else
-		TAILQ_FOREACH(t, &root->root_timer, task_node)
+		TAILQ_FOREACH_SAFE(t, &root->root_timer, task_node, tmp)
 			if (sched_timespeccmp(&TASK_TS(task), &TASK_TS(t), -) < 1)
 				break;
 		if (!t)
-			TAILQ_INSERT_TAIL(&root->root_timer, task, task_node);
+			TAILQ_INSERT_TAIL(&root->root_timer, TASK_ID(task), task_node);
 		else
-			TAILQ_INSERT_BEFORE(t, task, task_node);
+			TAILQ_INSERT_BEFORE(t, TASK_ID(task), task_node);
 #endif
 #ifdef HAVE_LIBPTHREAD
 		pthread_mutex_unlock(&root->root_mtx[taskTIMER]);
 #endif
 	} else
-		task = _sched_unuseTask(task);
+		task = sched_unuseTask(task);
 
 	return task;
 }
@@ -598,12 +1004,9 @@ schedEvent(sched_root_task_t * __restrict root, sched_
 		return NULL;
 
 	/* get new task */
-	if (!(task = _sched_useTask(root)))
+	if (!(task = sched_useTask(root)))
 		return NULL;
 
-	memset(task, 0, sizeof(sched_task_t));
-	task->task_id = 0;
-	task->task_lock = 0;
 	task->task_func = func;
 	TASK_TYPE(task) = taskEVENT;
 	TASK_ROOT(task) = root;
@@ -623,32 +1026,92 @@ schedEvent(sched_root_task_t * __restrict root, sched_
 #ifdef HAVE_LIBPTHREAD
 		pthread_mutex_lock(&root->root_mtx[taskEVENT]);
 #endif
-		TAILQ_INSERT_TAIL(&root->root_event, task, task_node);
+		TAILQ_INSERT_TAIL(&root->root_event, TASK_ID(task), task_node);
 #ifdef HAVE_LIBPTHREAD
 		pthread_mutex_unlock(&root->root_mtx[taskEVENT]);
 #endif
 	} else
-		task = _sched_unuseTask(task);
+		task = sched_unuseTask(task);
 
 	return task;
 }
 
 
 /*
- * schedEventLo() - Add EVENT_Lo task to scheduler queue
+ * schedTask() - Add regular task to scheduler queue
  *
  * @root = root task
  * @func = task execution function
  * @arg = 1st func argument
- * @val = additional func argument
+ * @prio = regular task priority, 0 is hi priority for regular tasks
  * @opt_data = Optional data
  * @opt_dlen = Optional data length
  * return: NULL error or !=NULL new queued task
  */
 sched_task_t *
-schedEventLo(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg, u_long val, 
+schedTask(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg, u_long prio, 
 		void *opt_data, size_t opt_dlen)
 {
+	sched_task_t *task, *tmp, *t = NULL;
+	void *ptr;
+
+	if (!root || !func)
+		return NULL;
+
+	/* get new task */
+	if (!(task = sched_useTask(root)))
+		return NULL;
+
+	task->task_func = func;
+	TASK_TYPE(task) = taskTASK;
+	TASK_ROOT(task) = root;
+
+	TASK_ARG(task) = arg;
+	TASK_VAL(task) = prio;
+
+	TASK_DATA(task) = opt_data;
+	TASK_DATLEN(task) = opt_dlen;
+
+	if (root->root_hooks.hook_add.task)
+		ptr = root->root_hooks.hook_add.task(task, NULL);
+	else
+		ptr = NULL;
+
+	if (!ptr) {
+#ifdef HAVE_LIBPTHREAD
+		pthread_mutex_lock(&root->root_mtx[taskTASK]);
+#endif
+		TAILQ_FOREACH_SAFE(t, &root->root_task, task_node, tmp)
+			if (TASK_VAL(task) < TASK_VAL(t))
+				break;
+		if (!t)
+			TAILQ_INSERT_TAIL(&root->root_task, TASK_ID(task), task_node);
+		else
+			TAILQ_INSERT_BEFORE(t, TASK_ID(task), task_node);
+#ifdef HAVE_LIBPTHREAD
+		pthread_mutex_unlock(&root->root_mtx[taskTASK]);
+#endif
+	} else
+		task = sched_unuseTask(task);
+
+	return task;
+}
+
+/*
+ * schedSuspend() - Add Suspended task to scheduler queue
+ *
+ * @root = root task
+ * @func = task execution function
+ * @arg = 1st func argument
+ * @id = Trigger ID
+ * @opt_data = Optional data
+ * @opt_dlen = Optional data length
+ * return: NULL error or !=NULL new queued task
+ */
+sched_task_t *
+schedSuspend(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg, u_long id, 
+		void *opt_data, size_t opt_dlen)
+{
 	sched_task_t *task;
 	void *ptr;
 
@@ -656,37 +1119,34 @@ schedEventLo(sched_root_task_t * __restrict root, sche
 		return NULL;
 
 	/* get new task */
-	if (!(task = _sched_useTask(root)))
+	if (!(task = sched_useTask(root)))
 		return NULL;
 
-	memset(task, 0, sizeof(sched_task_t));
-	task->task_id = 0;
-	task->task_lock = 0;
 	task->task_func = func;
-	TASK_TYPE(task) = taskEVENT;
+	TASK_TYPE(task) = taskSUSPEND;
 	TASK_ROOT(task) = root;
 
 	TASK_ARG(task) = arg;
-	TASK_VAL(task) = val;
+	TASK_VAL(task) = id;
 
 	TASK_DATA(task) = opt_data;
 	TASK_DATLEN(task) = opt_dlen;
 
-	if (root->root_hooks.hook_add.eventlo)
-		ptr = root->root_hooks.hook_add.eventlo(task, NULL);
+	if (root->root_hooks.hook_add.suspend)
+		ptr = root->root_hooks.hook_add.suspend(task, NULL);
 	else
 		ptr = NULL;
 
 	if (!ptr) {
 #ifdef HAVE_LIBPTHREAD
-		pthread_mutex_lock(&root->root_mtx[taskEVENTLO]);
+		pthread_mutex_lock(&root->root_mtx[taskSUSPEND]);
 #endif
-		TAILQ_INSERT_TAIL(&root->root_eventlo, task, task_node);
+		TAILQ_INSERT_TAIL(&root->root_suspend, TASK_ID(task), task_node);
 #ifdef HAVE_LIBPTHREAD
-		pthread_mutex_unlock(&root->root_mtx[taskEVENTLO]);
+		pthread_mutex_unlock(&root->root_mtx[taskSUSPEND]);
 #endif
 	} else
-		task = _sched_unuseTask(task);
+		task = sched_unuseTask(task);
 
 	return task;
 }
@@ -713,12 +1173,9 @@ schedCallOnce(sched_root_task_t * __restrict root, sch
 		return NULL;
 
 	/* get new task */
-	if (!(task = _sched_useTask(root)))
+	if (!(task = sched_useTask(root)))
 		return NULL;
 
-	memset(task, 0, sizeof(sched_task_t));
-	task->task_id = 0;
-	task->task_lock = 0;
 	task->task_func = func;
 	TASK_TYPE(task) = taskEVENT;
 	TASK_ROOT(task) = root;
@@ -731,6 +1188,65 @@ schedCallOnce(sched_root_task_t * __restrict root, sch
 
 	ret = schedCall(task);
 
-	_sched_unuseTask(task);
+	sched_unuseTask(task);
 	return ret;
 }
+
+/*
+ * schedThread() - Add thread task to scheduler queue
+ *
+ * @root = root task
+ * @func = task execution function
+ * @arg = 1st func argument
+ * @detach = Detach thread from scheduler, if !=0
+ * @opt_data = Optional data
+ * @opt_dlen = Optional data length
+ * return: NULL error or !=NULL new queued task
+ */
+sched_task_t *
+schedThread(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg, int detach, 
+		void *opt_data, size_t opt_dlen)
+{
+#ifndef HAVE_LIBPTHREAD
+	sched_SetErr(ENOTSUP, "Not supported thread tasks");
+	return NULL;
+#endif
+	sched_task_t *task;
+	void *ptr;
+	pthread_attr_t attr;
+
+	if (!root || !func)
+		return NULL;
+
+	/* get new task */
+	if (!(task = sched_useTask(root)))
+		return NULL;
+
+	task->task_func = func;
+	TASK_TYPE(task) = taskTHREAD;
+	TASK_ROOT(task) = root;
+
+	TASK_ARG(task) = arg;
+	TASK_FLAG(task) = detach ? PTHREAD_CREATE_DETACHED : PTHREAD_CREATE_JOINABLE;
+
+	TASK_DATA(task) = opt_data;
+	TASK_DATLEN(task) = opt_dlen;
+
+	pthread_attr_init(&attr);
+	pthread_attr_setdetachstate(&attr, TASK_FLAG(task));
+	if (root->root_hooks.hook_add.thread)
+		ptr = root->root_hooks.hook_add.thread(task, &attr);
+	else
+		ptr = NULL;
+	pthread_attr_destroy(&attr);
+
+	if (!ptr) {
+		pthread_mutex_lock(&root->root_mtx[taskTHREAD]);
+		TAILQ_INSERT_TAIL(&root->root_thread, TASK_ID(task), task_node);
+		pthread_mutex_unlock(&root->root_mtx[taskTHREAD]);
+	} else
+		task = sched_unuseTask(task);
+
+	return task;
+}
+