version 1.13, 2012/08/21 12:54:39
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version 1.18.2.1, 2013/08/26 07:30:07
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Line 12 terms:
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Line 12 terms:
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All of the documentation and software included in the ELWIX and AITNET |
All of the documentation and software included in the ELWIX and AITNET |
Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org> |
Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org> |
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Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 | Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 |
by Michael Pounov <misho@elwix.org>. All rights reserved. |
by Michael Pounov <misho@elwix.org>. All rights reserved. |
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Redistribution and use in source and binary forms, with or without |
Redistribution and use in source and binary forms, with or without |
Line 52 SUCH DAMAGE.
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Line 52 SUCH DAMAGE.
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* @root = root task |
* @root = root task |
* return: NULL error or !=NULL prepared task |
* return: NULL error or !=NULL prepared task |
*/ |
*/ |
inline sched_task_t * | sched_task_t * |
sched_useTask(sched_root_task_t * __restrict root) |
sched_useTask(sched_root_task_t * __restrict root) |
{ |
{ |
sched_task_t *task, *tmp; |
sched_task_t *task, *tmp; |
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TAILQ_FOREACH_SAFE(task, &root->root_unuse, task_node, tmp) { |
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if (!TASK_ISLOCKED(task)) { |
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#ifdef HAVE_LIBPTHREAD |
#ifdef HAVE_LIBPTHREAD |
pthread_mutex_lock(&root->root_mtx[taskUNUSE]); | pthread_mutex_lock(&root->root_mtx[taskUNUSE]); |
#endif |
#endif |
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TAILQ_FOREACH_SAFE(task, &root->root_unuse, task_node, tmp) { |
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if (!TASK_ISLOCKED(task)) { |
TAILQ_REMOVE(&root->root_unuse, task, task_node); |
TAILQ_REMOVE(&root->root_unuse, task, task_node); |
#ifdef HAVE_LIBPTHREAD |
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pthread_mutex_unlock(&root->root_mtx[taskUNUSE]); |
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#endif |
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break; |
break; |
} |
} |
} |
} |
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#ifdef HAVE_LIBPTHREAD |
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pthread_mutex_unlock(&root->root_mtx[taskUNUSE]); |
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#endif |
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if (!task) { |
if (!task) { |
task = malloc(sizeof(sched_task_t)); |
task = malloc(sizeof(sched_task_t)); |
Line 89 sched_useTask(sched_root_task_t * __restrict root)
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Line 89 sched_useTask(sched_root_task_t * __restrict root)
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* @task = task |
* @task = task |
* return: always is NULL |
* return: always is NULL |
*/ |
*/ |
inline sched_task_t * | sched_task_t * |
sched_unuseTask(sched_task_t * __restrict task) |
sched_unuseTask(sched_task_t * __restrict task) |
{ |
{ |
TASK_UNLOCK(task); |
TASK_UNLOCK(task); |
Line 106 sched_unuseTask(sched_task_t * __restrict task)
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Line 106 sched_unuseTask(sched_task_t * __restrict task)
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return task; |
return task; |
} |
} |
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#pragma GCC visibility push(hidden) |
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#ifdef HAVE_LIBPTHREAD |
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static void |
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_sched_threadCleanup(sched_task_t *t) |
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{ |
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if (!t || !TASK_ROOT(t)) |
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return; |
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if (TASK_FLAG(t) == PTHREAD_CREATE_JOINABLE) |
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pthread_detach(pthread_self()); |
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pthread_mutex_lock(&TASK_ROOT(t)->root_mtx[taskTHREAD]); |
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TAILQ_REMOVE(&TASK_ROOT(t)->root_thread, t, task_node); |
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pthread_mutex_unlock(&TASK_ROOT(t)->root_mtx[taskTHREAD]); |
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sched_unuseTask(t); |
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} |
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void * |
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_sched_threadWrapper(sched_task_t *t) |
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{ |
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void *ret = NULL; |
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sem_t *s = NULL; |
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if (!t || !TASK_ROOT(t) || !TASK_RET(t)) |
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pthread_exit(ret); |
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else |
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s = (sem_t*) TASK_RET(t); |
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pthread_cleanup_push((void (*)(void*)) _sched_threadCleanup, t); |
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pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL); |
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pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, NULL); |
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/* notify parent, thread is ready for execution */ |
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sem_post(s); |
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pthread_testcancel(); |
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ret = TASK_FUNC(t)(t); |
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pthread_cleanup_pop(42); |
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TASK_ROOT(t)->root_ret = ret; |
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pthread_exit(ret); |
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} |
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#endif |
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#if defined(HAVE_TIMER_CREATE) && defined(HAVE_TIMER_SETTIME) |
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void * |
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_sched_rtcWrapper(sched_task_t *t) |
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{ |
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void *ret = NULL; |
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sched_task_func_t func; |
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if (!t || !TASK_ROOT(t)) |
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return NULL; |
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else |
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func = TASK_FUNC(t); |
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ret = func(t); |
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timer_delete((timer_t) TASK_DATLEN(t)); |
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return ret; |
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} |
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#endif |
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#pragma GCC visibility pop |
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/* |
/* |
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* sched_taskExit() - Exit routine for scheduler task, explicit required for thread tasks |
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* |
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* @task = current task |
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* @retcode = return code |
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* return: return code |
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*/ |
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void * |
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sched_taskExit(sched_task_t *task, intptr_t retcode) |
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{ |
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if (!task || !TASK_ROOT(task)) |
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return (void*) -1; |
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if (TASK_ROOT(task)->root_hooks.hook_exec.exit) |
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TASK_ROOT(task)->root_hooks.hook_exec.exit(task, (void*) retcode); |
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TASK_ROOT(task)->root_ret = (void*) retcode; |
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return (void*) retcode; |
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} |
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/* |
* schedRead() - Add READ I/O task to scheduler queue |
* schedRead() - Add READ I/O task to scheduler queue |
* |
* |
* @root = root task |
* @root = root task |
Line 443 schedSignal(sched_root_task_t * __restrict root, sched
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Line 529 schedSignal(sched_root_task_t * __restrict root, sched
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* @func = task execution function |
* @func = task execution function |
* @arg = 1st func argument |
* @arg = 1st func argument |
* @ts = timeout argument structure, minimum alarm timer resolution is 1msec! |
* @ts = timeout argument structure, minimum alarm timer resolution is 1msec! |
* @opt_data = Optional data | * @opt_data = Alarm timer ID |
* @opt_dlen = Optional data length |
* @opt_dlen = Optional data length |
* return: NULL error or !=NULL new queued task |
* return: NULL error or !=NULL new queued task |
*/ |
*/ |
Line 557 schedAIO(sched_root_task_t * __restrict root, sched_ta
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Line 643 schedAIO(sched_root_task_t * __restrict root, sched_ta
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* @offset = Offset from start of file, if =-1 from current position |
* @offset = Offset from start of file, if =-1 from current position |
* return: NULL error or !=NULL new queued task |
* 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, |
schedAIORead(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg, int fd, |
void *buffer, size_t buflen, off_t offset) |
void *buffer, size_t buflen, off_t offset) |
{ |
{ |
Line 611 schedAIORead(sched_root_task_t * __restrict root, sche
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Line 697 schedAIORead(sched_root_task_t * __restrict root, sche
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* @offset = Offset from start of file, if =-1 from current position |
* @offset = Offset from start of file, if =-1 from current position |
* return: NULL error or !=NULL new queued task |
* 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, |
schedAIOWrite(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg, int fd, |
void *buffer, size_t buflen, off_t offset) |
void *buffer, size_t buflen, off_t offset) |
{ |
{ |
Line 792 schedLIORead(sched_root_task_t * __restrict root, sche
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Line 878 schedLIORead(sched_root_task_t * __restrict root, sche
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* @offset = Offset from start of file, if =-1 from current position |
* @offset = Offset from start of file, if =-1 from current position |
* return: NULL error or !=NULL new queued task |
* 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, |
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 iovec *bufs, size_t nbufs, off_t offset) |
{ |
{ |
Line 1148 schedCallOnce(sched_root_task_t * __restrict root, sch
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Line 1234 schedCallOnce(sched_root_task_t * __restrict root, sch
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* @func = task execution function |
* @func = task execution function |
* @arg = 1st func argument |
* @arg = 1st func argument |
* @detach = Detach thread from scheduler, if !=0 |
* @detach = Detach thread from scheduler, if !=0 |
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* @ss = stack size |
* @opt_data = Optional data |
* @opt_data = Optional data |
* @opt_dlen = Optional data length |
* @opt_dlen = Optional data length |
* return: NULL error or !=NULL new queued task |
* return: NULL error or !=NULL new queued task |
*/ |
*/ |
sched_task_t * |
sched_task_t * |
schedThread(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg, int detach, |
schedThread(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg, int detach, |
void *opt_data, size_t opt_dlen) | size_t ss, void *opt_data, size_t opt_dlen) |
{ |
{ |
#ifndef HAVE_LIBPTHREAD |
#ifndef HAVE_LIBPTHREAD |
sched_SetErr(ENOTSUP, "Not supported thread tasks"); |
sched_SetErr(ENOTSUP, "Not supported thread tasks"); |
Line 1163 schedThread(sched_root_task_t * __restrict root, sched
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Line 1250 schedThread(sched_root_task_t * __restrict root, sched
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sched_task_t *task; |
sched_task_t *task; |
void *ptr; |
void *ptr; |
pthread_attr_t attr; |
pthread_attr_t attr; |
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sem_t *s = NULL; |
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if (!root || !func) |
if (!root || !func) |
return NULL; |
return NULL; |
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else { |
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/* normalizing stack size & detach state */ |
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if (ss) |
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ss &= 0x7FFFFFFF; |
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detach = detach ? PTHREAD_CREATE_DETACHED : PTHREAD_CREATE_JOINABLE; |
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} |
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if (!(s = (sem_t*) malloc(sizeof(sem_t)))) { |
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LOGERR; |
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return NULL; |
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} |
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if (sem_init(s, 0, 1)) { |
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LOGERR; |
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free(s); |
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return NULL; |
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} |
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/* get new task */ |
/* get new task */ |
if (!(task = sched_useTask(root))) | if (!(task = sched_useTask(root))) { |
| sem_destroy(s); |
| free(s); |
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return NULL; |
return NULL; |
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} |
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task->task_func = func; |
task->task_func = func; |
TASK_TYPE(task) = taskTHREAD; |
TASK_TYPE(task) = taskTHREAD; |
TASK_ROOT(task) = root; |
TASK_ROOT(task) = root; |
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TASK_ARG(task) = arg; |
TASK_ARG(task) = arg; |
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TASK_FLAG(task) = detach; |
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TASK_RET(task) = (intptr_t) s; |
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TASK_DATA(task) = opt_data; |
TASK_DATA(task) = opt_data; |
TASK_DATLEN(task) = opt_dlen; |
TASK_DATLEN(task) = opt_dlen; |
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pthread_attr_init(&attr); |
pthread_attr_init(&attr); |
pthread_attr_setdetachstate(&attr, detach ? | pthread_attr_setdetachstate(&attr, detach); |
PTHREAD_CREATE_DETACHED : PTHREAD_CREATE_JOINABLE); | 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) |
if (root->root_hooks.hook_add.thread) |
ptr = root->root_hooks.hook_add.thread(task, &attr); |
ptr = root->root_hooks.hook_add.thread(task, &attr); |
else |
else |
Line 1193 schedThread(sched_root_task_t * __restrict root, sched
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Line 1329 schedThread(sched_root_task_t * __restrict root, sched
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pthread_mutex_lock(&root->root_mtx[taskTHREAD]); |
pthread_mutex_lock(&root->root_mtx[taskTHREAD]); |
TAILQ_INSERT_TAIL(&root->root_thread, TASK_ID(task), task_node); |
TAILQ_INSERT_TAIL(&root->root_thread, TASK_ID(task), task_node); |
pthread_mutex_unlock(&root->root_mtx[taskTHREAD]); |
pthread_mutex_unlock(&root->root_mtx[taskTHREAD]); |
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/* wait for init thread actions */ |
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sem_wait(s); |
} else |
} else |
task = sched_unuseTask(task); |
task = sched_unuseTask(task); |
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sem_destroy(s); |
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free(s); |
return task; |
return task; |
} |
} |
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/* |
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* schedRTC() - Add RTC task to scheduler queue |
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* |
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* @root = root task |
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* @func = task execution function |
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* @arg = 1st func argument |
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* @ts = timeout argument structure, minimum alarm timer resolution is 1msec! |
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* @opt_data = Optional RTC ID |
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* @opt_dlen = Optional data length |
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* return: NULL error or !=NULL new queued task |
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*/ |
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sched_task_t * |
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schedRTC(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg, struct timespec ts, |
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void *opt_data, size_t opt_dlen) |
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{ |
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#if defined(HAVE_TIMER_CREATE) && defined(HAVE_TIMER_SETTIME) |
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sched_task_t *task; |
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void *ptr; |
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if (!root || !func) |
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return NULL; |
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/* get new task */ |
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if (!(task = sched_useTask(root))) |
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return NULL; |
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task->task_func = func; |
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TASK_TYPE(task) = taskRTC; |
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TASK_ROOT(task) = root; |
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TASK_ARG(task) = arg; |
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TASK_TS(task) = ts; |
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TASK_DATA(task) = opt_data; |
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TASK_DATLEN(task) = opt_dlen; |
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if (root->root_hooks.hook_add.rtc) |
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ptr = root->root_hooks.hook_add.rtc(task, NULL); |
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else |
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ptr = NULL; |
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if (!ptr) { |
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#ifdef HAVE_LIBPTHREAD |
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pthread_mutex_lock(&root->root_mtx[taskRTC]); |
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#endif |
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TAILQ_INSERT_TAIL(&root->root_rtc, TASK_ID(task), task_node); |
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#ifdef HAVE_LIBPTHREAD |
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pthread_mutex_unlock(&root->root_mtx[taskRTC]); |
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#endif |
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} else |
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task = sched_unuseTask(task); |
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return task; |
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#else |
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sched_SetErr(ENOTSUP, "Not supported realtime clock extensions"); |
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return NULL; |
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#endif |
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} |