--- libaitsched/src/aitsched.c 2013/11/21 14:39:10 1.23 +++ libaitsched/src/aitsched.c 2014/06/05 22:37:29 1.26 @@ -3,7 +3,7 @@ * by Michael Pounov * * $Author: misho $ -* $Id: aitsched.c,v 1.23 2013/11/21 14:39:10 misho Exp $ +* $Id: aitsched.c,v 1.26 2014/06/05 22:37:29 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, 2013 +Copyright 2004 - 2014 by Michael Pounov . All rights reserved. Redistribution and use in source and binary forms, with or without @@ -82,6 +82,79 @@ sched_SetErr(int eno, char *estr, ...) va_end(lst); } + +/* string support functions directly imported from OpenBSD */ + +#ifndef HAVE_STRLCAT +/* + * Appends src to string dst of size siz (unlike strncat, siz is the + * full size of dst, not space left). At most siz-1 characters + * will be copied. Always NUL terminates (unless siz <= strlen(dst)). + * Returns strlen(src) + MIN(siz, strlen(initial dst)). + * If retval >= siz, truncation occurred. + */ +size_t +strlcat(char * __restrict dst, const char * __restrict src, size_t siz) +{ + char *d = dst; + const char *s = src; + size_t n = siz; + size_t dlen; + + /* Find the end of dst and adjust bytes left but don't go past end */ + while (n-- != 0 && *d != '\0') + d++; + dlen = d - dst; + n = siz - dlen; + + if (n == 0) + return(dlen + strlen(s)); + while (*s != '\0') { + if (n != 1) { + *d++ = *s; + n--; + } + s++; + } + *d = '\0'; + + return(dlen + (s - src)); /* count does not include NUL */ +} +#endif +#ifndef HAVE_STRLCPY +/* + * Copy src to string dst of size siz. At most siz-1 characters + * will be copied. Always NUL terminates (unless siz == 0). + * Returns strlen(src); if retval >= siz, truncation occurred. + */ +size_t +strlcpy(char * __restrict dst, const char * __restrict src, size_t siz) +{ + char *d = dst; + const char *s = src; + size_t n = siz; + + /* Copy as many bytes as will fit */ + if (n != 0) { + while (--n != 0) { + if ((*d++ = *s++) == '\0') + break; + } + } + + /* Not enough room in dst, add NUL and traverse rest of src */ + if (n == 0) { + if (siz != 0) + *d = '\0'; /* NUL-terminate dst */ + while (*s++) + ; + } + + return(s - src - 1); /* count does not include NUL */ +} +#endif + + /* Init and prepare scheduler functions */ /* @@ -101,16 +174,18 @@ schedRegisterHooks(sched_root_task_t * __restrict root root->root_hooks.hook_add.read = sched_hook_read; root->root_hooks.hook_add.write = sched_hook_write; - root->root_hooks.hook_add.alarm = sched_hook_alarm; -#if defined(HAVE_TIMER_CREATE) && defined(HAVE_TIMER_SETTIME) +#if defined(HAVE_TIMER_CREATE) && defined(HAVE_TIMER_SETTIME) && defined(HAVE_TIMER_DELETE) root->root_hooks.hook_add.rtc = sched_hook_rtc; #endif +#if SUP_ENABLE == KQ_SUPPORT + root->root_hooks.hook_add.alarm = sched_hook_alarm; root->root_hooks.hook_add.node = sched_hook_node; root->root_hooks.hook_add.proc = sched_hook_proc; root->root_hooks.hook_add.signal = sched_hook_signal; #ifdef EVFILT_USER root->root_hooks.hook_add.user = sched_hook_user; #endif +#endif /* KQ_SUPPORT */ #ifdef HAVE_LIBPTHREAD root->root_hooks.hook_add.thread = sched_hook_thread; #endif @@ -224,7 +299,45 @@ schedEnd(sched_root_task_t ** __restrict root) if (!root || !*root) return -1; +#if 0 TAILQ_FOREACH_SAFE(task, &(*root)->root_read, task_node, tmp) + printf("read=%p\n", task); + TAILQ_FOREACH_SAFE(task, &(*root)->root_write, task_node, tmp) + printf("write=%p\n", task); + TAILQ_FOREACH_SAFE(task, &(*root)->root_timer, task_node, tmp) + printf("timer=%p\n", task); + TAILQ_FOREACH_SAFE(task, &(*root)->root_alarm, task_node, tmp) + printf("alarm=%p\n", task); + TAILQ_FOREACH_SAFE(task, &(*root)->root_rtc, task_node, tmp) + printf("rtc=%p\n", task); + TAILQ_FOREACH_SAFE(task, &(*root)->root_node, task_node, tmp) + printf("node=%p\n", task); + TAILQ_FOREACH_SAFE(task, &(*root)->root_proc, task_node, tmp) + printf("proc=%p\n", task); + TAILQ_FOREACH_SAFE(task, &(*root)->root_signal, task_node, tmp) + printf("signal=%p\n", task); + TAILQ_FOREACH_SAFE(task, &(*root)->root_aio, task_node, tmp) + printf("aio=%p\n", task); + TAILQ_FOREACH_SAFE(task, &(*root)->root_lio, task_node, tmp) + printf("lio=%p\n", task); + TAILQ_FOREACH_SAFE(task, &(*root)->root_user, task_node, tmp) + printf("user=%p\n", task); + TAILQ_FOREACH_SAFE(task, &(*root)->root_event, task_node, tmp) + printf("event=%p\n", task); + TAILQ_FOREACH_SAFE(task, &(*root)->root_suspend, task_node, tmp) + printf("suspend=%p\n", task); + TAILQ_FOREACH_SAFE(task, &(*root)->root_ready, task_node, tmp) + printf("ready=%p\n", task); + TAILQ_FOREACH_SAFE(task, &(*root)->root_thread, task_node, tmp) + printf("thread=%p\n", task); + TAILQ_FOREACH_SAFE(task, &(*root)->root_task, task_node, tmp) + printf("task=%p\n", task); + TAILQ_FOREACH_SAFE(task, &(*root)->root_unuse, task_node, tmp) + printf("unuse=%p\n", task); + fflush(stdout); +#endif + + TAILQ_FOREACH_SAFE(task, &(*root)->root_read, task_node, tmp) schedCancel(task); TAILQ_FOREACH_SAFE(task, &(*root)->root_write, task_node, tmp) schedCancel(task); @@ -257,23 +370,21 @@ schedEnd(sched_root_task_t ** __restrict root) TAILQ_FOREACH_SAFE(task, &(*root)->root_task, task_node, tmp) schedCancel(task); -#ifdef HAVE_LIBPTHREAD - pthread_mutex_lock(&(*root)->root_mtx[taskUNUSE]); -#endif + SCHED_QLOCK((*root), taskUNUSE); TAILQ_FOREACH_SAFE(task, &(*root)->root_unuse, task_node, tmp) { TAILQ_REMOVE(&(*root)->root_unuse, task, task_node); free(task); } -#ifdef HAVE_LIBPTHREAD - pthread_mutex_unlock(&(*root)->root_mtx[taskUNUSE]); -#endif + SCHED_QUNLOCK((*root), taskUNUSE); if ((*root)->root_hooks.hook_root.fini) (*root)->root_hooks.hook_root.fini(*root, NULL); #ifdef HAVE_LIBPTHREAD - for (i = 0; i < taskMAX; i++) + for (i = 0; i < taskMAX; i++) { + SCHED_QUNLOCK(*root, i); pthread_mutex_destroy(&(*root)->root_mtx[i]); + } #endif free(*root); @@ -335,6 +446,10 @@ schedFetch(sched_root_task_t * __restrict root) int schedTrigger(sched_task_t * __restrict task) { +#if SUP_ENABLE != KQ_SUPPORT + sched_SetErr(ENOTSUP, "disabled kqueue support"); + return -1; +#else #ifndef EVFILT_USER sched_SetErr(ENOTSUP, "Not supported kevent() filter"); return -1; @@ -357,6 +472,7 @@ schedTrigger(sched_task_t * __restrict task) return 0; #endif +#endif /* KQ_SUPPORT */ } /* @@ -659,15 +775,8 @@ schedCancel(sched_task_t * __restrict task) default: queue = NULL; } - if (queue) { -#ifdef HAVE_LIBPTHREAD - pthread_mutex_lock(&TASK_ROOT(task)->root_mtx[TASK_TYPE(task)]); -#endif - TAILQ_REMOVE(queue, TASK_ID(task), task_node); -#ifdef HAVE_LIBPTHREAD - pthread_mutex_unlock(&TASK_ROOT(task)->root_mtx[TASK_TYPE(task)]); -#endif - } + if (queue) + remove_task_from(task, queue); if (TASK_TYPE(task) != taskUNUSE) sched_unuseTask(task); @@ -786,9 +895,7 @@ schedCancelby(sched_root_task_t * __restrict root, sch return 0; } -#ifdef HAVE_LIBPTHREAD - pthread_mutex_lock(&root->root_mtx[type]); -#endif + SCHED_QLOCK(root, type); TAILQ_FOREACH_SAFE(task, queue, task_node, tmp) { flg ^= flg; switch (criteria) { @@ -851,9 +958,8 @@ schedCancelby(sched_root_task_t * __restrict root, sch flg ^= flg; /* ok */ } } -#ifdef HAVE_LIBPTHREAD - pthread_mutex_unlock(&root->root_mtx[type]); -#endif + SCHED_QUNLOCK(root, type); + return flg; } @@ -934,12 +1040,12 @@ schedPolling(sched_root_task_t * __restrict root, stru * return: -1 error or 0 ok */ int -schedTermCondition(sched_root_task_t * __restrict root, intptr_t condValue) +schedTermCondition(sched_root_task_t * __restrict root, intptr_t * __restrict condValue) { - if (!root) + if (!root && !condValue) return -1; - root->root_cond = condValue; + *root->root_cond = *condValue; root->root_hooks.hook_exec.condition = sched_hook_condition; return 0; } @@ -962,9 +1068,7 @@ schedResumeby(sched_root_task_t * __restrict root, u_c if (!root) return -1; -#ifdef HAVE_LIBPTHREAD - pthread_mutex_lock(&root->root_mtx[taskSUSPEND]); -#endif + SCHED_QLOCK(root, taskSUSPEND); TAILQ_FOREACH_SAFE(task, &root->root_suspend, task_node, tmp) { flg ^= flg; switch (criteria) { @@ -997,20 +1101,12 @@ schedResumeby(sched_root_task_t * __restrict root, u_c TAILQ_REMOVE(&root->root_suspend, task, task_node); task->task_type = taskREADY; -#ifdef HAVE_LIBPTHREAD - pthread_mutex_lock(&root->root_mtx[taskREADY]); -#endif - TAILQ_INSERT_TAIL(&root->root_ready, task, task_node); -#ifdef HAVE_LIBPTHREAD - pthread_mutex_unlock(&root->root_mtx[taskREADY]); -#endif + insert_task_to(task, &root->root_ready); flg ^= flg; /* ok */ } } -#ifdef HAVE_LIBPTHREAD - pthread_mutex_unlock(&root->root_mtx[taskSUSPEND]); -#endif + SCHED_QUNLOCK(root, taskSUSPEND); return flg; }