--- libaitsched/src/tasks.c 2012/08/02 09:19:31 1.10.2.6 +++ libaitsched/src/tasks.c 2013/08/15 17:58:31 1.16.6.2 @@ -3,7 +3,7 @@ * by Michael Pounov * * $Author: misho $ -* $Id: tasks.c,v 1.10.2.6 2012/08/02 09:19:31 misho Exp $ +* $Id: tasks.c,v 1.16.6.2 2013/08/15 17:58:31 misho Exp $ * ************************************************************************** The ELWIX and AITNET software is distributed under the following @@ -12,7 +12,7 @@ terms: All of the documentation and software included in the ELWIX and AITNET Releases is copyrighted by ELWIX - Sofia/Bulgaria -Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 +Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 by Michael Pounov . All rights reserved. Redistribution and use in source and binary forms, with or without @@ -46,25 +46,29 @@ SUCH DAMAGE. #include "global.h" -#pragma GCC visibility push(hidden) - -inline sched_task_t * -_sched_useTask(sched_root_task_t * __restrict root) +/* + * sched_useTask() - Get and init new task + * + * @root = root task + * return: NULL error or !=NULL prepared task + */ +sched_task_t * +sched_useTask(sched_root_task_t * __restrict root) { sched_task_t *task, *tmp; - TAILQ_FOREACH_SAFE(task, &root->root_unuse, task_node, tmp) { - if (!TASK_ISLOCKED(task)) { #ifdef HAVE_LIBPTHREAD - pthread_mutex_lock(&root->root_mtx[taskUNUSE]); + pthread_mutex_lock(&root->root_mtx[taskUNUSE]); #endif + TAILQ_FOREACH_SAFE(task, &root->root_unuse, task_node, tmp) { + if (!TASK_ISLOCKED(task)) { TAILQ_REMOVE(&root->root_unuse, task, task_node); -#ifdef HAVE_LIBPTHREAD - pthread_mutex_unlock(&root->root_mtx[taskUNUSE]); -#endif break; } } +#ifdef HAVE_LIBPTHREAD + pthread_mutex_unlock(&root->root_mtx[taskUNUSE]); +#endif if (!task) { task = malloc(sizeof(sched_task_t)); @@ -79,8 +83,14 @@ _sched_useTask(sched_root_task_t * __restrict root) return task; } -inline sched_task_t * -_sched_unuseTask(sched_task_t * __restrict task) +/* + * sched_unuseTask() - Unlock and put task to unuse queue + * + * @task = task + * return: always is NULL + */ +sched_task_t * +sched_unuseTask(sched_task_t * __restrict task) { TASK_UNLOCK(task); TASK_TYPE(task) = taskUNUSE; @@ -96,9 +106,75 @@ _sched_unuseTask(sched_task_t * __restrict task) return task; } +#pragma GCC visibility push(hidden) + +#ifdef HAVE_LIBPTHREAD +static void +_sched_threadCleanup(sched_task_t *t) +{ + if (!t || !TASK_ROOT(t)) + return; + + if (TASK_FLAG(t) == PTHREAD_CREATE_JOINABLE) + pthread_detach(pthread_self()); + + pthread_mutex_lock(&TASK_ROOT(t)->root_mtx[taskTHREAD]); + TAILQ_REMOVE(&TASK_ROOT(t)->root_thread, t, task_node); + pthread_mutex_unlock(&TASK_ROOT(t)->root_mtx[taskTHREAD]); + + sched_unuseTask(t); +} +void * +_sched_threadWrapper(sched_task_t *t) +{ + void *ret = NULL; + sem_t *s = NULL; + + if (!t || !TASK_ROOT(t) || !TASK_RET(t)) + pthread_exit(ret); + else + s = (sem_t*) TASK_RET(t); + + pthread_cleanup_push((void (*)(void*)) _sched_threadCleanup, t); + + pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL); + pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, NULL); + + /* notify parent, thread is ready for execution */ + sem_post(s); + pthread_testcancel(); + + ret = TASK_FUNC(t)(t); + + pthread_cleanup_pop(42); + TASK_ROOT(t)->root_ret = ret; + pthread_exit(ret); +} +#endif + #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 + */ +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; + return (void*) retcode; +} + + /* * schedRead() - Add READ I/O task to scheduler queue * @@ -121,7 +197,7 @@ 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; task->task_func = func; @@ -148,7 +224,7 @@ schedRead(sched_root_task_t * __restrict root, sched_t pthread_mutex_unlock(&root->root_mtx[taskREAD]); #endif } else - task = _sched_unuseTask(task); + task = sched_unuseTask(task); return task; } @@ -175,7 +251,7 @@ 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; task->task_func = func; @@ -202,7 +278,7 @@ schedWrite(sched_root_task_t * __restrict root, sched_ pthread_mutex_unlock(&root->root_mtx[taskWRITE]); #endif } else - task = _sched_unuseTask(task); + task = sched_unuseTask(task); return task; } @@ -229,7 +305,7 @@ 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; task->task_func = func; @@ -256,7 +332,7 @@ schedNode(sched_root_task_t * __restrict root, sched_t pthread_mutex_unlock(&root->root_mtx[taskNODE]); #endif } else - task = _sched_unuseTask(task); + task = sched_unuseTask(task); return task; } @@ -283,7 +359,7 @@ 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; task->task_func = func; @@ -310,7 +386,7 @@ schedProc(sched_root_task_t * __restrict root, sched_t pthread_mutex_unlock(&root->root_mtx[taskPROC]); #endif } else - task = _sched_unuseTask(task); + task = sched_unuseTask(task); return task; } @@ -341,7 +417,7 @@ 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; task->task_func = func; @@ -368,7 +444,7 @@ schedUser(sched_root_task_t * __restrict root, sched_t pthread_mutex_unlock(&root->root_mtx[taskUSER]); #endif } else - task = _sched_unuseTask(task); + task = sched_unuseTask(task); return task; #endif @@ -396,7 +472,7 @@ 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; task->task_func = func; @@ -423,7 +499,7 @@ schedSignal(sched_root_task_t * __restrict root, sched pthread_mutex_unlock(&root->root_mtx[taskSIGNAL]); #endif } else - task = _sched_unuseTask(task); + task = sched_unuseTask(task); return task; } @@ -435,7 +511,7 @@ schedSignal(sched_root_task_t * __restrict root, sched * @func = task execution function * @arg = 1st func argument * @ts = timeout argument structure, minimum alarm timer resolution is 1msec! - * @opt_data = Optional data + * @opt_data = Alarm timer ID * @opt_dlen = Optional data length * return: NULL error or !=NULL new queued task */ @@ -450,7 +526,7 @@ 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; task->task_func = func; @@ -477,12 +553,12 @@ schedAlarm(sched_root_task_t * __restrict root, sched_ pthread_mutex_unlock(&root->root_mtx[taskALARM]); #endif } else - task = _sched_unuseTask(task); + task = sched_unuseTask(task); return task; } -#ifdef EVFILT_AIO +#ifdef AIO_SUPPORT /* * schedAIO() - Add AIO task to scheduler queue * @@ -505,7 +581,7 @@ schedAIO(sched_root_task_t * __restrict root, sched_ta return NULL; /* get new task */ - if (!(task = _sched_useTask(root))) + if (!(task = sched_useTask(root))) return NULL; task->task_func = func; @@ -532,7 +608,7 @@ schedAIO(sched_root_task_t * __restrict root, sched_ta pthread_mutex_unlock(&root->root_mtx[taskAIO]); #endif } else - task = _sched_unuseTask(task); + task = sched_unuseTask(task); return task; } @@ -546,20 +622,28 @@ schedAIO(sched_root_task_t * __restrict root, sched_ta * @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 * +sched_task_t * schedAIORead(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg, int fd, - void *buffer, size_t buflen) + void *buffer, size_t buflen, off_t offset) { struct aiocb *acb; - off_t off = 0; + off_t off; if (!root || !func || !buffer || !buflen) return NULL; - else - memset(buffer, 0, buflen); + 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; @@ -569,13 +653,7 @@ schedAIORead(sched_root_task_t * __restrict root, sche acb->aio_fildes = fd; acb->aio_nbytes = buflen; acb->aio_buf = buffer; - off = lseek(fd, 0, SEEK_CUR); - if (off == -1) { - LOGERR; - free(acb); - return NULL; - } else - acb->aio_offset = off; + 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; @@ -598,18 +676,28 @@ schedAIORead(sched_root_task_t * __restrict root, sche * @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 * +sched_task_t * schedAIOWrite(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg, int fd, - void *buffer, size_t buflen) + void *buffer, size_t buflen, off_t offset) { struct aiocb *acb; - off_t off = 0; + 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; @@ -619,13 +707,7 @@ schedAIOWrite(sched_root_task_t * __restrict root, sch acb->aio_fildes = fd; acb->aio_nbytes = buflen; acb->aio_buf = buffer; - off = lseek(fd, 0, SEEK_CUR); - if (off == -1) { - LOGERR; - free(acb); - return NULL; - } else - acb->aio_offset = off; + 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; @@ -641,6 +723,60 @@ schedAIOWrite(sched_root_task_t * __restrict root, sch #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 @@ -649,11 +785,12 @@ schedAIOWrite(sched_root_task_t * __restrict root, sch * @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 * +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) + struct iovec *bufs, size_t nbufs, off_t offset) { struct sigevent sig; struct aiocb **acb; @@ -663,11 +800,14 @@ schedLIORead(sched_root_task_t * __restrict root, sche if (!root || !func || !bufs || !nbufs) return NULL; - off = lseek(fd, 0, SEEK_CUR); - if (off == -1) { - LOGERR; - 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; @@ -681,7 +821,7 @@ schedLIORead(sched_root_task_t * __restrict root, sche for (i = 0; i < nbufs; i++) if (acb[i]) free(acb[i]); - free(acb); + free(acb); return NULL; } else memset(acb[i], 0, sizeof(struct aiocb)); @@ -698,10 +838,14 @@ schedLIORead(sched_root_task_t * __restrict root, sche 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 schedAIO(root, func, arg, (void*) acb, bufs, nbufs); + return schedLIO(root, func, arg, (void*) acb, bufs, nbufs); } /* @@ -713,11 +857,12 @@ schedLIORead(sched_root_task_t * __restrict root, sche * @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 * +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) + struct iovec *bufs, size_t nbufs, off_t offset) { struct sigevent sig; struct aiocb **acb; @@ -727,11 +872,14 @@ schedLIOWrite(sched_root_task_t * __restrict root, sch if (!root || !func || !bufs || !nbufs) return NULL; - off = lseek(fd, 0, SEEK_CUR); - if (off == -1) { - LOGERR; - 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; @@ -745,7 +893,7 @@ schedLIOWrite(sched_root_task_t * __restrict root, sch for (i = 0; i < nbufs; i++) if (acb[i]) free(acb[i]); - free(acb); + free(acb); return NULL; } else memset(acb[i], 0, sizeof(struct aiocb)); @@ -762,13 +910,17 @@ schedLIOWrite(sched_root_task_t * __restrict root, sch 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 schedAIO(root, func, arg, (void*) acb, bufs, nbufs); + return schedLIO(root, func, arg, (void*) acb, bufs, nbufs); } #endif /* EVFILT_LIO */ -#endif /* EVFILT_AIO */ +#endif /* AIO_SUPPORT */ /* * schedTimer() - Add TIMER task to scheduler queue @@ -793,7 +945,7 @@ 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; task->task_func = func; @@ -842,7 +994,7 @@ schedTimer(sched_root_task_t * __restrict root, sched_ pthread_mutex_unlock(&root->root_mtx[taskTIMER]); #endif } else - task = _sched_unuseTask(task); + task = sched_unuseTask(task); return task; } @@ -869,7 +1021,7 @@ 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; task->task_func = func; @@ -896,62 +1048,68 @@ schedEvent(sched_root_task_t * __restrict root, sched_ 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; + sched_task_t *task, *tmp, *t = NULL; void *ptr; if (!root || !func) return NULL; /* get new task */ - if (!(task = _sched_useTask(root))) + if (!(task = sched_useTask(root))) return NULL; task->task_func = func; - TASK_TYPE(task) = taskEVENT; + TASK_TYPE(task) = taskTASK; TASK_ROOT(task) = root; TASK_ARG(task) = arg; - TASK_VAL(task) = val; + TASK_VAL(task) = prio; 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.task) + ptr = root->root_hooks.hook_add.task(task, NULL); else ptr = NULL; if (!ptr) { #ifdef HAVE_LIBPTHREAD - pthread_mutex_lock(&root->root_mtx[taskEVENTLO]); + pthread_mutex_lock(&root->root_mtx[taskTASK]); #endif - TAILQ_INSERT_TAIL(&root->root_eventlo, TASK_ID(task), task_node); + 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[taskEVENTLO]); + pthread_mutex_unlock(&root->root_mtx[taskTASK]); #endif } else - task = _sched_unuseTask(task); + task = sched_unuseTask(task); return task; } @@ -978,7 +1136,7 @@ schedSuspend(sched_root_task_t * __restrict root, sche return NULL; /* get new task */ - if (!(task = _sched_useTask(root))) + if (!(task = sched_useTask(root))) return NULL; task->task_func = func; @@ -1005,7 +1163,7 @@ schedSuspend(sched_root_task_t * __restrict root, sche pthread_mutex_unlock(&root->root_mtx[taskSUSPEND]); #endif } else - task = _sched_unuseTask(task); + task = sched_unuseTask(task); return task; } @@ -1032,7 +1190,7 @@ 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; task->task_func = func; @@ -1047,6 +1205,173 @@ 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 + * @ss = stack size + * @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, + size_t ss, 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; + sem_t *s = NULL; + + if (!root || !func) + return NULL; + else { + /* normalizing stack size & detach state */ + if (ss) + ss &= 0x7FFFFFFF; + detach = detach ? PTHREAD_CREATE_DETACHED : PTHREAD_CREATE_JOINABLE; + } + + if (!(s = (sem_t*) malloc(sizeof(sem_t)))) { + LOGERR; + return NULL; + } + if (sem_init(s, 0, 1)) { + LOGERR; + free(s); + return NULL; + } + + /* get new task */ + if (!(task = sched_useTask(root))) { + sem_destroy(s); + free(s); + + return NULL; + } + + task->task_func = func; + TASK_TYPE(task) = taskTHREAD; + TASK_ROOT(task) = root; + + TASK_ARG(task) = arg; + TASK_FLAG(task) = detach; + TASK_RET(task) = (intptr_t) s; + + TASK_DATA(task) = opt_data; + TASK_DATLEN(task) = opt_dlen; + + pthread_attr_init(&attr); + pthread_attr_setdetachstate(&attr, detach); + if (ss && (errno = pthread_attr_setstacksize(&attr, ss))) { + LOGERR; + pthread_attr_destroy(&attr); + sem_destroy(s); + free(s); + return sched_unuseTask(task); + } + if ((errno = pthread_attr_getstacksize(&attr, &ss))) { + LOGERR; + pthread_attr_destroy(&attr); + sem_destroy(s); + free(s); + return sched_unuseTask(task); + } else + TASK_FLAG(task) |= (ss << 1); + if ((errno = pthread_attr_setguardsize(&attr, ss))) { + LOGERR; + pthread_attr_destroy(&attr); + sem_destroy(s); + free(s); + return sched_unuseTask(task); + } +#ifdef SCHED_RR + pthread_attr_setschedpolicy(&attr, SCHED_RR); +#else + pthread_attr_setschedpolicy(&attr, SCHED_OTHER); +#endif + 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]); + + /* wait for init thread actions */ + sem_wait(s); + } else + task = sched_unuseTask(task); + + sem_destroy(s); + free(s); + return task; +} + +/* + * schedRTC() - Add RTC task to scheduler queue + * + * @root = root task + * @func = task execution function + * @arg = 1st func argument + * @ts = timeout argument structure, minimum alarm timer resolution is 1msec! + * @opt_data = RTC ID + * @opt_dlen = Optional data length + * return: NULL error or !=NULL new queued task + */ +sched_task_t * +schedRTC(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; + void *ptr; + + if (!root || !func) + return NULL; + + /* get new task */ + if (!(task = sched_useTask(root))) + return NULL; + + task->task_func = func; + TASK_TYPE(task) = taskRTC; + TASK_ROOT(task) = root; + + TASK_ARG(task) = arg; + TASK_TS(task) = ts; + + TASK_DATA(task) = opt_data; + TASK_DATLEN(task) = opt_dlen; + + if (root->root_hooks.hook_add.rtc) + ptr = root->root_hooks.hook_add.rtc(task, NULL); + else + ptr = NULL; + + if (!ptr) { +#ifdef HAVE_LIBPTHREAD + pthread_mutex_lock(&root->root_mtx[taskRTC]); +#endif + TAILQ_INSERT_TAIL(&root->root_rtc, TASK_ID(task), task_node); +#ifdef HAVE_LIBPTHREAD + pthread_mutex_unlock(&root->root_mtx[taskRTC]); +#endif + } else + task = sched_unuseTask(task); + + return task; }