1: /*************************************************************************
2: * (C) 2011 AITNET ltd - Sofia/Bulgaria - <misho@aitbg.com>
3: * by Michael Pounov <misho@openbsd-bg.org>
4: *
5: * $Author: misho $
6: * $Id: aitsched.h,v 1.12 2012/08/02 13:56:19 misho Exp $
7: *
8: **************************************************************************
9: The ELWIX and AITNET software is distributed under the following
10: terms:
11:
12: All of the documentation and software included in the ELWIX and AITNET
13: Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>
14:
15: Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
16: by Michael Pounov <misho@elwix.org>. All rights reserved.
17:
18: Redistribution and use in source and binary forms, with or without
19: modification, are permitted provided that the following conditions
20: are met:
21: 1. Redistributions of source code must retain the above copyright
22: notice, this list of conditions and the following disclaimer.
23: 2. Redistributions in binary form must reproduce the above copyright
24: notice, this list of conditions and the following disclaimer in the
25: documentation and/or other materials provided with the distribution.
26: 3. All advertising materials mentioning features or use of this software
27: must display the following acknowledgement:
28: This product includes software developed by Michael Pounov <misho@elwix.org>
29: ELWIX - Embedded LightWeight unIX and its contributors.
30: 4. Neither the name of AITNET nor the names of its contributors
31: may be used to endorse or promote products derived from this software
32: without specific prior written permission.
33:
34: THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND
35: ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
36: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
37: ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
38: FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
39: DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
40: OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
41: HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
42: LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
43: OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
44: SUCH DAMAGE.
45: */
46: #ifndef __AITSCHED_H
47: #define __AITSCHED_H
48:
49:
50: #include <sys/types.h>
51: #include <sys/queue.h>
52: #include <sys/event.h>
53: #include <sys/uio.h>
54: #include <stdint.h>
55: #include <pthread.h>
56: #ifdef EVFILT_LIO
57: #include <aio.h>
58: #endif
59:
60:
61: /* criteria type */
62: #define CRITERIA_ANY 0
63: #define CRITERIA_CALL 1
64: #define CRITERIA_ARG 2
65: #define CRITERIA_FD 3
66: #define CRITERIA_VAL 4
67: #define CRITERIA_TS 5
68: #define CRITERIA_DATA 6
69: #define CRITERIA_ID 7
70:
71:
72: /* early declaration for root & task */
73: typedef struct sched_Task sched_task_t;
74: typedef struct sched_RootTask sched_root_task_t;
75:
76: typedef enum {
77: taskREAD = 0,
78: taskWRITE,
79: taskTIMER,
80: taskALARM,
81: taskNODE,
82: taskPROC,
83: taskSIGNAL,
84: taskAIO,
85: taskLIO,
86: taskUSER,
87: taskEVENT,
88: taskEVENTLO,
89: taskSUSPEND,
90: taskREADY,
91: taskUNUSE,
92: taskMAX
93: } sched_task_type_t;
94:
95: /* hooks */
96: typedef void *(*sched_hook_func_t)(void *, void *);
97: struct sched_HooksTask {
98: struct {
99: /* read(sched_task_t *task, NULL) -> int */
100: sched_hook_func_t read;
101: /* write(sched_task_t *task, NULL) -> int */
102: sched_hook_func_t write;
103: /* timer(sched_task_t *task, struct timespec *ts) -> int */
104: sched_hook_func_t timer;
105: /* alarm(sched_task_t *task, NULL) -> int */
106: sched_hook_func_t alarm;
107: /* node(sched_task_t *task, NULL) -> int */
108: sched_hook_func_t node;
109: /* proc(sched_task_t *task, NULL) -> int */
110: sched_hook_func_t proc;
111: /* signal(sched_task_t *task, NULL) -> int */
112: sched_hook_func_t signal;
113: /* aio(sched_task_t *task, NULL) -> int */
114: sched_hook_func_t aio;
115: /* lio(sched_task_t *task, NULL) -> int */
116: sched_hook_func_t lio;
117: /* user(sched_task_t *task, NULL) -> int */
118: sched_hook_func_t user;
119: /* event(sched_task_t *task, NULL) -> int */
120: sched_hook_func_t event;
121: /* eventlo(sched_task_t *task, NULL) -> int */
122: sched_hook_func_t eventlo;
123: /* suspend(sched_task_t *task, NULL) -> int */
124: sched_hook_func_t suspend;
125: } hook_add;
126: struct {
127: /* cancel(sched_task_t *task, NULL) -> int */
128: sched_hook_func_t cancel;
129: /* resume(sched_task_t *task, NULL) -> int */
130: sched_hook_func_t resume;
131: /* run(sched_root_task_t *root, NULL) -> int */
132: sched_hook_func_t run;
133: /* fetch(sched_root_task_t *root, NULL) -> sched_task_t* */
134: sched_hook_func_t fetch;
135: /* exception(sched_root_task_t *root, NULL) -> int */
136: sched_hook_func_t exception;
137: /* condition(sched_root_task_t *root, intptr_t *stopValue) -> int */
138: sched_hook_func_t condition;
139: } hook_exec;
140: struct {
141: /* init(sched_root_task_t *root, void *data) -> int */
142: sched_hook_func_t init;
143: /* fini(sched_root_task_t *root, NULL) -> int */
144: sched_hook_func_t fini;
145: /* error(sched_root_task_t *root, int errno) -> int */
146: sched_hook_func_t error;
147: } hook_root;
148: };
149: typedef struct sched_HooksTask hooks_task_t;
150:
151: /* task callback, like pthread callback! */
152: typedef void *(*sched_task_func_t)(sched_task_t * /* current task data*/);
153:
154: /* task lock helpers */
155: #define TASK_LOCK(x) ((x)->task_lock = 42)
156: #define TASK_UNLOCK(x) ((x)->task_lock ^= (x)->task_lock)
157: #define TASK_ISLOCKED(x) ((x)->task_lock)
158:
159: /* task & queue */
160: struct sched_Task {
161: volatile int task_lock;
162: uintptr_t task_id;
163: #define TASK_ID(x) ((struct sched_Task*) (x)->task_id)
164: sched_task_type_t task_type;
165: #define TASK_TYPE(x) (x)->task_type
166:
167: sched_root_task_t *task_root;
168: #define TASK_ROOT(x) (x)->task_root
169: sched_task_func_t task_func;
170: #define TASK_FUNC(x) (x)->task_func
171:
172: void *task_arg;
173: union {
174: unsigned long v;
175: intptr_t fd;
176: struct timespec ts;
177: } task_val;
178: #define TASK_ARG(x) (x)->task_arg
179: #define TASK_VAL(x) (x)->task_val.v
180: #define TASK_FD(x) (x)->task_val.fd
181: #define TASK_TS(x) (x)->task_val.ts
182:
183: struct iovec task_data;
184: #define TASK_DATA(x) (x)->task_data.iov_base
185: #define TASK_DATLEN(x) (x)->task_data.iov_len
186:
187: TAILQ_ENTRY(sched_Task) task_node;
188: };
189: typedef TAILQ_HEAD(, sched_Task) sched_queue_t;
190: #define TASK_DATA_SET(x, _dp, _dl) do { \
191: if ((x)) { \
192: (x)->task_data.iov_base = (_dp); \
193: (x)->task_data.iov_len = _dl; \
194: } \
195: while (0)
196:
197: /* root task */
198: struct sched_RootTask {
199: int root_kq;
200: struct timespec root_wait;
201: struct timespec root_poll;
202: intptr_t root_cond;
203: void *root_ret;
204:
205: pthread_mutex_t root_mtx[taskMAX];
206:
207: sched_queue_t root_read;
208: sched_queue_t root_write;
209: sched_queue_t root_timer;
210: sched_queue_t root_alarm;
211: sched_queue_t root_node;
212: sched_queue_t root_proc;
213: sched_queue_t root_signal;
214: sched_queue_t root_aio;
215: sched_queue_t root_lio;
216: sched_queue_t root_user;
217: sched_queue_t root_event;
218: sched_queue_t root_eventlo;
219: sched_queue_t root_suspend;
220: sched_queue_t root_ready;
221: sched_queue_t root_unuse;
222: int root_eventlo_miss;
223:
224: hooks_task_t root_hooks;
225: struct iovec root_data;
226: #define ROOT_DATA(x) (x)->root_data.iov_base
227: #define ROOT_DATLEN(x) (x)->root_data.iov_len
228: };
229: #define ROOT_QUEUE_EMPTY(x, _q) TAILQ_EMPTY(&((x)->root_##_q))
230: #define ROOT_RETURN(x) (x)->root_ret
231:
232:
233: inline int sched_GetErrno();
234: inline const char *sched_GetError();
235:
236:
237: /*
238: * schedInit() - Init scheduler
239: *
240: * @data = optional data if !=NULL
241: * @datlen = data len if data is set
242: * return: allocated root task if ok or NULL error
243: */
244: sched_root_task_t *schedInit(void ** __restrict data, size_t datlen);
245: #define schedBegin() schedInit((void**) &schedRegisterHooks, 0)
246: /*
247: * schedEnd() - End scheduler & free all resources
248: *
249: * @root = root task
250: * return: -1 error or 0 ok
251: */
252: int schedEnd(sched_root_task_t ** __restrict root);
253: /*
254: * schedRegisterHooks() - Register IO handles and bind tasks to it
255: *
256: * @root = root task
257: * return: -1 error or 0 ok
258: */
259: int schedRegisterHooks(sched_root_task_t * __restrict root);
260: /*
261: * schedPolling() - Polling timeout period if no timer task is present
262: *
263: * @root = root task
264: * @ts = timeout polling period, if ==NULL INFINIT timeout
265: * @tsold = old timeout polling if !=NULL
266: * return: -1 error or 0 ok
267: */
268: inline int schedPolling(sched_root_task_t * __restrict root,
269: struct timespec * __restrict ts, struct timespec * __restrict tsold);
270: /*
271: * schedTermCondition() - Activate hook for scheduler condition kill
272: *
273: * @root = root task
274: * @condValue = condition value, kill schedRun() if condValue == killState
275: * return: -1 error ok 0 ok
276: */
277: inline int schedTermCondition(sched_root_task_t * __restrict root, intptr_t condValue);
278: /*
279: * schedCall() - Call task execution function
280: *
281: * @task = current task
282: * return: !=NULL error or =NULL ok
283: */
284: inline void *schedCall(sched_task_t * __restrict task);
285: /*
286: * schedFetch() - Fetch ready task
287: *
288: * @root = root task
289: * return: =NULL error or !=NULL ready task
290: */
291: inline void *schedFetch(sched_root_task_t * __restrict root);
292: /*
293: * schedRun() - Scheduler *run loop*
294: *
295: * @root = root task
296: * @killState = kill condition variable, if !=0 stop scheduler loop
297: * return: -1 error or 0 ok
298: */
299: int schedRun(sched_root_task_t *root, volatile intptr_t * __restrict killState);
300: /*
301: * schedCancel() - Cancel task from scheduler
302: *
303: * @task = task
304: * return: -1 error or 0 ok
305: */
306: int schedCancel(sched_task_t * __restrict task);
307: /*
308: * schedCancelby() - Cancel task from scheduler by criteria
309: *
310: * @root = root task
311: * @type = cancel from queue type, if =taskMAX cancel same task from all queues
312: * @criteria = find task by criteria
313: * [CRITERIA_ANY|CRITERIA_CALL|CRITERIA_ARG|CRITERIA_FD|CRITERIA_VAL|CRITERIA_ID|CRITERIA_TS|CRITERIA_DATA]
314: * @param = search parameter
315: * @hook = custom cleanup hook function, may be NULL
316: * return: -1 error, -2 error in sub-stage cancel execution, -3 error from custom hook or 0 ok
317: */
318: int schedCancelby(sched_root_task_t * __restrict root, sched_task_type_t type,
319: u_char criteria, void *param, sched_hook_func_t hook);
320:
321:
322: /*
323: * schedRead() - Add READ I/O task to scheduler queue
324: *
325: * @root = root task
326: * @func = task execution function
327: * @arg = 1st func argument
328: * @fd = fd handle
329: * @opt_data = Optional data
330: * @opt_dlen = Optional data length
331: * return: NULL error or !=NULL new queued task
332: */
333: sched_task_t *schedRead(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg,
334: int fd, void *opt_data, size_t opt_dlen);
335: #define schedReadSelf(x) schedRead(TASK_ROOT((x)), TASK_FUNC((x)), TASK_ARG((x)), \
336: TASK_FD((x)), TASK_DATA((x)), TASK_DATLEN((x)))
337: /*
338: * schedWrite() - Add WRITE I/O task to scheduler queue
339: *
340: * @root = root task
341: * @func = task execution function
342: * @arg = 1st func argument
343: * @fd = fd handle
344: * @opt_data = Optional data
345: * @opt_dlen = Optional data length
346: * return: NULL error or !=NULL new queued task
347: */
348: sched_task_t *schedWrite(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg,
349: int fd, void *opt_data, size_t opt_dlen);
350: #define schedWriteSelf(x) schedWrite(TASK_ROOT((x)), TASK_FUNC((x)), TASK_ARG((x)), \
351: TASK_FD((x)), TASK_DATA((x)), TASK_DATLEN((x)))
352: /*
353: * schedAlarm() - Add ALARM task to scheduler queue
354: *
355: * @root = root task
356: * @func = task execution function
357: * @arg = 1st func argument
358: * @ts = timeout argument structure, minimum alarm timer resolution is 1msec!
359: * @opt_data = Optional data
360: * @opt_dlen = Optional data length
361: * return: NULL error or !=NULL new queued task
362: */
363: sched_task_t *schedAlarm(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg,
364: struct timespec ts, void *opt_data, size_t opt_dlen);
365: #define schedAlarmSelf(x) schedAlarm(TASK_ROOT((x)), TASK_FUNC((x)), TASK_ARG((x)), \
366: TASK_TS((x)), TASK_DATA((x)), TASK_DATLEN((x)))
367: /*
368: * schedNode() - Add NODE task to scheduler queue
369: *
370: * @root = root task
371: * @func = task execution function
372: * @arg = 1st func argument
373: * @fd = fd handle
374: * @opt_data = Optional data
375: * @opt_dlen = Optional data length
376: * return: NULL error or !=NULL new queued task
377: */
378: sched_task_t *schedNode(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg,
379: int fd, void *opt_data, size_t opt_dlen);
380: #define schedNodeSelf(x) schedNode(TASK_ROOT((x)), TASK_FUNC((x)), TASK_ARG((x)), \
381: TASK_FD((x)), TASK_DATA((x)), TASK_DATLEN((x)))
382: /*
383: * schedProc() - Add PROC task to scheduler queue
384: *
385: * @root = root task
386: * @func = task execution function
387: * @arg = 1st func argument
388: * @pid = PID
389: * @opt_data = Optional data
390: * @opt_dlen = Optional data length
391: * return: NULL error or !=NULL new queued task
392: */
393: sched_task_t *schedProc(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg,
394: unsigned long pid, void *opt_data, size_t opt_dlen);
395: #define schedProcSelf(x) schedProc(TASK_ROOT((x)), TASK_FUNC((x)), TASK_ARG((x)), \
396: TASK_VAL((x)), TASK_DATA((x)), TASK_DATLEN((x)))
397: /*
398: * schedSignal() - Add SIGNAL task to scheduler queue
399: *
400: * @root = root task
401: * @func = task execution function
402: * @arg = 1st func argument
403: * @sig = Signal
404: * @opt_data = Optional data
405: * @opt_dlen = Optional data length
406: * return: NULL error or !=NULL new queued task
407: */
408: sched_task_t *schedSignal(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg,
409: unsigned long sig, void *opt_data, size_t opt_dlen);
410: #define schedSignalSelf(x) schedSignal(TASK_ROOT((x)), TASK_FUNC((x)), TASK_ARG((x)), \
411: TASK_VAL((x)), TASK_DATA((x)), TASK_DATLEN((x)))
412:
413: #ifdef EVFILT_LIO
414: /*
415: * schedAIO() - Add AIO task to scheduler queue
416: *
417: * @root = root task
418: * @func = task execution function
419: * @arg = 1st func argument
420: * @acb = AIO cb structure address
421: * @opt_data = Optional data
422: * @opt_dlen = Optional data length
423: * return: NULL error or !=NULL new queued task
424: */
425: sched_task_t *schedAIO(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg,
426: struct aiocb * __restrict acb, void *opt_data, size_t opt_dlen);
427: /*
428: * schedAIORead() - Add AIO read task to scheduler queue
429: *
430: * @root = root task
431: * @func = task execution function
432: * @arg = 1st func argument
433: * @fd = file descriptor
434: * @buffer = Buffer
435: * @buflen = Buffer length
436: * @offset = Offset from start of file, if =-1 from current position
437: * return: NULL error or !=NULL new queued task
438: */
439: inline sched_task_t *schedAIORead(sched_root_task_t * __restrict root, sched_task_func_t func,
440: void *arg, int fd, void *buffer, size_t buflen, off_t offset);
441: /*
442: * schedAIOWrite() - Add AIO write task to scheduler queue
443: *
444: * @root = root task
445: * @func = task execution function
446: * @arg = 1st func argument
447: * @fd = file descriptor
448: * @buffer = Buffer
449: * @buflen = Buffer length
450: * @offset = Offset from start of file, if =-1 from current position
451: * return: NULL error or !=NULL new queued task
452: */
453: inline sched_task_t *schedAIOWrite(sched_root_task_t * __restrict root, sched_task_func_t func,
454: void *arg, int fd, void *buffer, size_t buflen, off_t offset);
455:
456: /*
457: * schedLIO() - Add AIO bulk tasks to scheduler queue
458: *
459: * @root = root task
460: * @func = task execution function
461: * @arg = 1st func argument
462: * @acbs = AIO cb structure addresses
463: * @opt_data = Optional data
464: * @opt_dlen = Optional data length
465: * return: NULL error or !=NULL new queued task
466: */
467: sched_task_t *schedLIO(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg,
468: struct aiocb ** __restrict acbs, void *opt_data, size_t opt_dlen);
469: /*
470: * schedLIORead() - Add list of AIO read tasks to scheduler queue
471: *
472: * @root = root task
473: * @func = task execution function
474: * @arg = 1st func argument
475: * @fd = file descriptor
476: * @bufs = Buffer's list
477: * @nbufs = Number of Buffers
478: * @offset = Offset from start of file, if =-1 from current position
479: * return: NULL error or !=NULL new queued task
480: */
481: inline sched_task_t *schedLIORead(sched_root_task_t * __restrict root, sched_task_func_t func,
482: void *arg, int fd, struct iovec *bufs, size_t nbufs, off_t offset);
483: /*
484: * schedLIOWrite() - Add list of AIO write tasks to scheduler queue
485: *
486: * @root = root task
487: * @func = task execution function
488: * @arg = 1st func argument
489: * @fd = file descriptor
490: * @bufs = Buffer's list
491: * @nbufs = Number of Buffers
492: * @offset = Offset from start of file, if =-1 from current position
493: * return: NULL error or !=NULL new queued task
494: */
495: inline sched_task_t *schedLIOWrite(sched_root_task_t * __restrict root, sched_task_func_t func,
496: void *arg, int fd, struct iovec *bufs, size_t nbufs, off_t offset);
497: #endif /* EVFILT_LIO */
498:
499: /*
500: * schedUser() - Add trigger USER task to scheduler queue
501: *
502: * @root = root task
503: * @func = task execution function
504: * @arg = 1st func argument
505: * @id = Trigger ID
506: * @opt_data = Optional data
507: * @opt_dlen = Optional user's trigger flags
508: * return: NULL error or !=NULL new queued task
509: */
510: sched_task_t *schedUser(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg,
511: unsigned long id, void *opt_data, size_t opt_dlen);
512: #define schedUserSelf(x) schedUser(TASK_ROOT((x)), TASK_FUNC((x)), TASK_ARG((x)), \
513: TASK_VAL((x)), TASK_DATA((x)), TASK_DATLEN((x)))
514: /*
515: * schedTrigger() - Triggering USER task
516: *
517: * @task = task
518: * return: -1 error or 0 ok
519: */
520: int schedTrigger(sched_task_t * __restrict task);
521:
522: /*
523: * schedTimer() - Add TIMER task to scheduler queue
524: *
525: * @root = root task
526: * @func = task execution function
527: * @arg = 1st func argument
528: * @ts = timeout argument structure
529: * @opt_data = Optional data
530: * @opt_dlen = Optional data length
531: * return: NULL error or !=NULL new queued task
532: */
533: sched_task_t *schedTimer(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg,
534: struct timespec ts, void *opt_data, size_t opt_dlen);
535: #define schedTimerSelf(x) schedTimer(TASK_ROOT((x)), TASK_FUNC((x)), TASK_ARG((x)), \
536: TASK_TS((x)), TASK_DATA((x)), TASK_DATLEN((x)))
537: /*
538: * schedEvent() - Add EVENT task to scheduler queue
539: *
540: * @root = root task
541: * @func = task execution function
542: * @arg = 1st func argument
543: * @val = additional func argument
544: * @opt_data = Optional data
545: * @opt_dlen = Optional data length
546: * return: NULL error or !=NULL new queued task
547: */
548: sched_task_t *schedEvent(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg,
549: unsigned long val, void *opt_data, size_t opt_dlen);
550: #define schedEventSelf(x) schedEvent(TASK_ROOT((x)), TASK_FUNC((x)), TASK_ARG((x)), \
551: TASK_VAL((x)), TASK_DATA((x)), TASK_DATLEN((x)))
552: /*
553: * schedEventLo() - Add EVENT_Lo task to scheduler queue
554: *
555: * @root = root task
556: * @func = task execution function
557: * @arg = 1st func argument
558: * @val = additional func argument
559: * @opt_data = Optional data
560: * @opt_dlen = Optional data length
561: * return: NULL error or !=NULL new queued task
562: */
563: sched_task_t *schedEventLo(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg,
564: unsigned long val, void *opt_data, size_t opt_dlen);
565: #define schedEventLoSelf(x) schedEventLo(TASK_ROOT((x)), TASK_FUNC((x)), TASK_ARG((x)), \
566: TASK_VAL((x)), TASK_DATA((x)), TASK_DATLEN((x)))
567: /*
568: * schedSuspend() - Add Suspended task to scheduler queue
569: *
570: * @root = root task
571: * @func = task execution function
572: * @arg = 1st func argument
573: * @id = Trigger ID
574: * @opt_data = Optional data
575: * @opt_dlen = Optional user's trigger flags
576: * return: NULL error or !=NULL new queued task
577: */
578: sched_task_t *schedSuspend(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg,
579: unsigned long id, void *opt_data, size_t opt_dlen);
580: #define schedSuspendSelf(x) schedUser(TASK_ROOT((x)), TASK_FUNC((x)), TASK_ARG((x)), \
581: TASK_VAL((x)), TASK_DATA((x)), TASK_DATLEN((x)))
582: /*
583: * schedResumeby() - Resume suspended task
584: *
585: * @root = root task
586: * @criteria = find task by criteria
587: * [CRITERIA_ANY|CRITERIA_ID|CRITERIA_DATA]
588: * @param = search parameter (sched_task_t *task| u_long id)
589: * return: -1 error or 0 resumed ok
590: */
591: int schedResumeby(sched_root_task_t * __restrict root, unsigned char criteria, void *param);
592:
593: /*
594: * schedCallOnce() - Call once from scheduler
595: *
596: * @root = root task
597: * @func = task execution function
598: * @arg = 1st func argument
599: * @val = additional func argument
600: * @opt_data = Optional data
601: * @opt_dlen = Optional data length
602: * return: return value from called func
603: */
604: sched_task_t *schedCallOnce(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg,
605: unsigned long val, void *opt_data, size_t opt_dlen);
606: #define schedCallAgain(x) schedCallOnce(TASK_ROOT((x)), TASK_FUNC((x)), TASK_ARG((x)), \
607: TASK_VAL((x)), TASK_DATA((x)), TASK_DATLEN((x)))
608:
609:
610: #endif
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