--- libaitsched/src/tasks.c 2012/08/21 12:50:08 1.12.4.2 +++ libaitsched/src/tasks.c 2014/01/28 13:17:33 1.23 @@ -3,7 +3,7 @@ * by Michael Pounov * * $Author: misho $ -* $Id: tasks.c,v 1.12.4.2 2012/08/21 12:50:08 misho Exp $ +* $Id: tasks.c,v 1.23 2014/01/28 13:17:33 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 - 2014 by Michael Pounov . All rights reserved. Redistribution and use in source and binary forms, with or without @@ -52,23 +52,23 @@ SUCH DAMAGE. * @root = root task * return: NULL error or !=NULL prepared task */ -inline sched_task_t * +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)); @@ -89,7 +89,7 @@ sched_useTask(sched_root_task_t * __restrict root) * @task = task * return: always is NULL */ -inline sched_task_t * +sched_task_t * sched_unuseTask(sched_task_t * __restrict task) { TASK_UNLOCK(task); @@ -106,8 +106,101 @@ 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; + + 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; + + pthread_cleanup_push((void (*)(void*)) _sched_threadCleanup, t); + + if (!t || !TASK_ROOT(t)) + pthread_exit(ret); + + pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL); + /* + pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, NULL); + */ + + /* notify parent, thread is ready for execution */ + pthread_testcancel(); + + ret = schedCall(t); + + pthread_cleanup_pop(42); + TASK_ROOT(t)->root_ret = ret; + pthread_exit(ret); +} +#endif + +#if defined(HAVE_TIMER_CREATE) && defined(HAVE_TIMER_SETTIME) +void * +_sched_rtcWrapper(sched_task_t *t) +{ + sched_task_func_t func; + sched_task_t *task; + sched_root_task_t *r; + + if (!t || !TASK_ROOT(t) || !TASK_DATA(t)) + return NULL; + else { + r = TASK_ROOT(t); + task = (sched_task_t*) TASK_DATA(t); + func = TASK_FUNC(task); + } + +#ifdef HAVE_LIBPTHREAD + pthread_mutex_lock(&r->root_mtx[taskRTC]); +#endif + TAILQ_REMOVE(&r->root_rtc, task, task_node); +#ifdef HAVE_LIBPTHREAD + pthread_mutex_unlock(&r->root_mtx[taskRTC]); +#endif + sched_unuseTask(task); + + timer_delete((timer_t) TASK_DATLEN(t)); + + return schedCall(task); +} +#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 * * @root = root task @@ -230,6 +323,10 @@ sched_task_t * schedNode(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg, int fd, void *opt_data, size_t opt_dlen) { +#ifdef KQ_DISABLE + sched_SetErr(ENOTSUP, "disabled kqueue support"); + return NULL; +#else sched_task_t *task; void *ptr; @@ -267,6 +364,7 @@ schedNode(sched_root_task_t * __restrict root, sched_t task = sched_unuseTask(task); return task; +#endif /* KQ_DISABLE */ } /* @@ -284,6 +382,10 @@ sched_task_t * schedProc(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg, u_long pid, void *opt_data, size_t opt_dlen) { +#ifdef KQ_DISABLE + sched_SetErr(ENOTSUP, "disabled kqueue support"); + return NULL; +#else sched_task_t *task; void *ptr; @@ -321,6 +423,7 @@ schedProc(sched_root_task_t * __restrict root, sched_t task = sched_unuseTask(task); return task; +#endif /* KQ_DISABLE */ } /* @@ -338,6 +441,10 @@ 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) { +#ifdef KQ_DISABLE + sched_SetErr(ENOTSUP, "disabled kqueue support"); + return NULL; +#else #ifndef EVFILT_USER sched_SetErr(ENOTSUP, "Not supported kevent() filter"); return NULL; @@ -379,7 +486,8 @@ schedUser(sched_root_task_t * __restrict root, sched_t task = sched_unuseTask(task); return task; -#endif +#endif /* EVFILT_USER */ +#endif /* KQ_DISABLE */ } /* @@ -397,6 +505,10 @@ sched_task_t * schedSignal(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg, u_long sig, void *opt_data, size_t opt_dlen) { +#ifdef KQ_DISABLE + sched_SetErr(ENOTSUP, "disabled kqueue support"); + return NULL; +#else sched_task_t *task; void *ptr; @@ -434,6 +546,7 @@ schedSignal(sched_root_task_t * __restrict root, sched task = sched_unuseTask(task); return task; +#endif /* KQ_DISABLE */ } /* @@ -443,7 +556,7 @@ 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 */ @@ -451,6 +564,10 @@ sched_task_t * schedAlarm(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg, struct timespec ts, void *opt_data, size_t opt_dlen) { +#ifdef KQ_DISABLE + sched_SetErr(ENOTSUP, "disabled kqueue support"); + return NULL; +#else sched_task_t *task; void *ptr; @@ -488,6 +605,7 @@ schedAlarm(sched_root_task_t * __restrict root, sched_ task = sched_unuseTask(task); return task; +#endif /* KQ_DISABLE */ } #ifdef AIO_SUPPORT @@ -506,6 +624,10 @@ 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) { +#ifdef KQ_DISABLE + sched_SetErr(ENOTSUP, "disabled kqueue support"); + return NULL; +#else sched_task_t *task; void *ptr; @@ -543,6 +665,7 @@ schedAIO(sched_root_task_t * __restrict root, sched_ta task = sched_unuseTask(task); return task; +#endif /* KQ_DISABLE */ } /* @@ -557,10 +680,14 @@ schedAIO(sched_root_task_t * __restrict root, sched_ta * @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, off_t offset) { +#ifdef KQ_DISABLE + sched_SetErr(ENOTSUP, "disabled kqueue support"); + return NULL; +#else struct aiocb *acb; off_t off; @@ -597,6 +724,7 @@ schedAIORead(sched_root_task_t * __restrict root, sche } return schedAIO(root, func, arg, acb, buffer, buflen); +#endif /* KQ_DISABLE */ } /* @@ -611,10 +739,14 @@ schedAIORead(sched_root_task_t * __restrict root, sche * @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, off_t offset) { +#ifdef KQ_DISABLE + sched_SetErr(ENOTSUP, "disabled kqueue support"); + return NULL; +#else struct aiocb *acb; off_t off; @@ -651,6 +783,7 @@ schedAIOWrite(sched_root_task_t * __restrict root, sch } return schedAIO(root, func, arg, acb, buffer, buflen); +#endif /* KQ_DISABLE */ } #ifdef EVFILT_LIO @@ -669,6 +802,10 @@ 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) { +#ifdef KQ_DISABLE + sched_SetErr(ENOTSUP, "disabled kqueue support"); + return NULL; +#else sched_task_t *task; void *ptr; @@ -706,6 +843,7 @@ schedLIO(sched_root_task_t * __restrict root, sched_ta task = sched_unuseTask(task); return task; +#endif /* KQ_DISABLE */ } /* @@ -724,6 +862,10 @@ 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) { +#ifdef KQ_DISABLE + sched_SetErr(ENOTSUP, "disabled kqueue support"); + return NULL; +#else struct sigevent sig; struct aiocb **acb; off_t off; @@ -778,6 +920,7 @@ schedLIORead(sched_root_task_t * __restrict root, sche } return schedLIO(root, func, arg, (void*) acb, bufs, nbufs); +#endif /* KQ_DISABLE */ } /* @@ -792,10 +935,14 @@ schedLIORead(sched_root_task_t * __restrict root, sche * @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, off_t offset) { +#ifdef KQ_DISABLE + sched_SetErr(ENOTSUP, "disabled kqueue support"); + return NULL; +#else struct sigevent sig; struct aiocb **acb; off_t off; @@ -850,6 +997,7 @@ schedLIOWrite(sched_root_task_t * __restrict root, sch } return schedLIO(root, func, arg, (void*) acb, bufs, nbufs); +#endif /* KQ_DISABLE */ } #endif /* EVFILT_LIO */ #endif /* AIO_SUPPORT */ @@ -1147,29 +1295,30 @@ schedCallOnce(sched_root_task_t * __restrict root, sch * @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, - void *opt_data, size_t opt_dlen) +schedThread(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg, + 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; 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) = taskTHREAD; @@ -1181,21 +1330,97 @@ schedThread(sched_root_task_t * __restrict root, sched TASK_DATLEN(task) = opt_dlen; pthread_attr_init(&attr); - pthread_attr_setdetachstate(&attr, detach ? - PTHREAD_CREATE_DETACHED : PTHREAD_CREATE_JOINABLE); + pthread_attr_setdetachstate(&attr, PTHREAD_DETACHED); + if (ss && (errno = pthread_attr_setstacksize(&attr, ss))) { + LOGERR; + pthread_attr_destroy(&attr); + return sched_unuseTask(task); + } + if ((errno = pthread_attr_getstacksize(&attr, &ss))) { + LOGERR; + pthread_attr_destroy(&attr); + return sched_unuseTask(task); + } else + TASK_FLAG(task) = ss; + if ((errno = pthread_attr_setguardsize(&attr, ss))) { + LOGERR; + pthread_attr_destroy(&attr); + return sched_unuseTask(task); + } +#ifdef SCHED_RR + pthread_attr_setschedpolicy(&attr, SCHED_RR); +#else + pthread_attr_setschedpolicy(&attr, SCHED_OTHER); +#endif + + 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]); + if (root->root_hooks.hook_add.thread) - ptr = root->root_hooks.hook_add.thread(task, &attr); + if (root->root_hooks.hook_add.thread(task, &attr)) { + schedCancel(task); + task = NULL; + } + pthread_attr_destroy(&attr); + 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 = Optional 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) +{ +#if defined(HAVE_TIMER_CREATE) && defined(HAVE_TIMER_SETTIME) + 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; - 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]); +#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; +#else + sched_SetErr(ENOTSUP, "Not supported realtime clock extensions"); + return NULL; +#endif } -