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 1.29.10.4 2022/11/28 23:52:35 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 - 2022
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/select.h>
53: #include <sys/uio.h>
54: #include <stdint.h>
55: #include <pthread.h>
56: #include <assert.h>
57: #ifdef EVFILT_LIO
58: #include <aio.h>
59: #endif
60:
61:
62: /* criteria type */
63: #define CRITERIA_ANY 0
64: #define CRITERIA_CALL 1
65: #define CRITERIA_ARG 2
66: #define CRITERIA_FD 3
67: #define CRITERIA_VAL 4
68: #define CRITERIA_TS 5
69: #define CRITERIA_DATA 6
70: #define CRITERIA_DATLEN 7
71: #define CRITERIA_ID 8
72:
73:
74: /* early declaration for root & task */
75: typedef struct sched_Task sched_task_t;
76: typedef struct sched_RootTask sched_root_task_t;
77:
78: typedef enum {
79: taskREAD = 0,
80: taskWRITE,
81: taskTIMER,
82: taskALARM,
83: taskNODE,
84: taskPROC,
85: taskSIGNAL,
86: taskAIO,
87: taskLIO,
88: taskUSER,
89: taskEVENT,
90: taskTASK,
91: taskSUSPEND,
92: taskREADY,
93: taskUNUSE,
94: taskTHREAD,
95: taskRTC,
96: taskMAX
97: } sched_task_type_t;
98:
99: /* hooks */
100: typedef void *(*sched_hook_func_t)(void *, void *);
101: struct sched_HooksTask {
102: struct {
103: /* read(sched_task_t *task, NULL) -> int */
104: sched_hook_func_t read;
105: /* write(sched_task_t *task, NULL) -> int */
106: sched_hook_func_t write;
107: /* timer(sched_task_t *task, struct timespec *ts) -> int */
108: sched_hook_func_t timer;
109: /* alarm(sched_task_t *task, NULL) -> int */
110: sched_hook_func_t alarm;
111: /* node(sched_task_t *task, NULL) -> int */
112: sched_hook_func_t node;
113: /* proc(sched_task_t *task, NULL) -> int */
114: sched_hook_func_t proc;
115: /* signal(sched_task_t *task, NULL) -> int */
116: sched_hook_func_t signal;
117: /* aio(sched_task_t *task, NULL) -> int */
118: sched_hook_func_t aio;
119: /* lio(sched_task_t *task, NULL) -> int */
120: sched_hook_func_t lio;
121: /* user(sched_task_t *task, NULL) -> int */
122: sched_hook_func_t user;
123: /* event(sched_task_t *task, NULL) -> int */
124: sched_hook_func_t event;
125: /* task(sched_task_t *task, NULL) -> int */
126: sched_hook_func_t task;
127: /* suspend(sched_task_t *task, NULL) -> int */
128: sched_hook_func_t suspend;
129: /* thread(sched_task_t *task, NULL) -> int */
130: sched_hook_func_t thread;
131: /* rtc(sched_task_t *task, NULL) -> int */
132: sched_hook_func_t rtc;
133: } hook_add;
134: struct {
135: /* exit(sched_task_t *task, void *exitValue) -> int */
136: sched_hook_func_t exit;
137: /* cancel(sched_task_t *task, NULL) -> int */
138: sched_hook_func_t cancel;
139: /* resume(sched_task_t *task, NULL) -> int */
140: sched_hook_func_t resume;
141: /* run(sched_root_task_t *root, NULL) -> int */
142: sched_hook_func_t run;
143: /* fetch(sched_root_task_t *root, NULL) -> sched_task_t* */
144: sched_hook_func_t fetch;
145: /* exception(sched_root_task_t *root, NULL) -> int */
146: sched_hook_func_t exception;
147: /* condition(sched_root_task_t *root, intptr_t *stopValue) -> int */
148: sched_hook_func_t condition;
149: } hook_exec;
150: struct {
151: /* init(sched_root_task_t *root, void *data) -> int */
152: sched_hook_func_t init;
153: /* fini(sched_root_task_t *root, NULL) -> int */
154: sched_hook_func_t fini;
155: /* error(sched_root_task_t *root, int errno) -> int */
156: sched_hook_func_t error;
157: } hook_root;
158: };
159: typedef struct sched_HooksTask hooks_task_t;
160:
161: /* task callback, like pthread callback! */
162: typedef void *(*sched_task_func_t)(sched_task_t * /* current task data*/);
163: #define SCHED_TASK_DEFINE(x) void *(x)(sched_task_t*)
164:
165: /* task lock helpers */
166: #define TASK_LOCK(x) ((x)->task_lock = 42)
167: #define TASK_UNLOCK(x) ((x)->task_lock ^= (x)->task_lock)
168: #define TASK_ISLOCKED(x) ((x)->task_lock)
169:
170: /* task & queue */
171: struct sched_Task {
172: uintptr_t task_id;
173: #define TASK_ID(x) ((struct sched_Task*) (x)->task_id)
174: sched_task_type_t task_type;
175: #define TASK_TYPE(x) (x)->task_type
176: volatile int task_lock;
177:
178: sched_root_task_t *task_root;
179: #define TASK_ROOT(x) (x)->task_root
180: sched_task_func_t task_func;
181: #define TASK_FUNC(x) (x)->task_func
182: intptr_t task_ret;
183: #define TASK_RET(x) (x)->task_ret
184: unsigned long task_flag;
185: #define TASK_FLAG(x) (x)->task_flag
186:
187: void *task_arg;
188: union {
189: unsigned long v;
190: intptr_t fd;
191: struct timespec ts;
192: } task_val;
193: #define TASK_ARG(x) (x)->task_arg
194: #define TASK_VAL(x) (x)->task_val.v
195: #define TASK_FD(x) (x)->task_val.fd
196: #define TASK_TS(x) (x)->task_val.ts
197:
198: #define TASK_TS2TV(x, tvp) (assert((tvp)), (tvp)->tv_sec = (x)->task_val.ts.tv_sec, \
199: (tvp)->tv_usec = (x)->task_val.ts.tv_nsec / 1000)
200:
201: struct iovec task_data;
202: #define TASK_DATA(x) (x)->task_data.iov_base
203: #define TASK_DATLEN(x) (x)->task_data.iov_len
204:
205: unsigned long task_harg;
206: #define TASK_HARG(x) (x)->task_harg
207:
208: TAILQ_ENTRY(sched_Task) task_node;
209: };
210: typedef TAILQ_HEAD(, sched_Task) sched_queue_t;
211: #define TASK_DATA_SET(x, _dp, _dl) do { \
212: if ((x)) { \
213: (x)->task_data.iov_base = (_dp); \
214: (x)->task_data.iov_len = _dl; \
215: } \
216: while (0)
217:
218: /* root task */
219: struct sched_RootTask {
220: int root_kq;
221: fd_set root_fds[3];
222: struct timespec root_wait;
223: struct timespec root_poll;
224: unsigned long root_miss;
225: intptr_t root_cond[1];
226: void *root_ret;
227:
228: pthread_mutex_t root_mtx[taskMAX];
229:
230: sched_queue_t root_read;
231: sched_queue_t root_write;
232: sched_queue_t root_timer;
233: sched_queue_t root_alarm;
234: sched_queue_t root_node;
235: sched_queue_t root_proc;
236: sched_queue_t root_signal;
237: sched_queue_t root_aio;
238: sched_queue_t root_lio;
239: sched_queue_t root_user;
240: sched_queue_t root_event;
241: sched_queue_t root_task;
242: sched_queue_t root_suspend;
243: sched_queue_t root_ready;
244: sched_queue_t root_unuse;
245: sched_queue_t root_thread;
246: sched_queue_t root_rtc;
247:
248: hooks_task_t root_hooks;
249: struct iovec root_data;
250: #define ROOT_DATA(x) (x)->root_data.iov_base
251: #define ROOT_DATLEN(x) (x)->root_data.iov_len
252: };
253: #define ROOT_QUEUE_EMPTY(x, _q) TAILQ_EMPTY(&((x)->root_##_q))
254: #define ROOT_RETURN(x) (x)->root_ret
255:
256:
257: int sched_GetErrno();
258: const char *sched_GetError();
259:
260:
261: /*
262: * schedInit() - Init scheduler
263: *
264: * @data = optional data if !=NULL
265: * @datlen = data len if data is set
266: * return: allocated root task if ok or NULL error
267: */
268: sched_root_task_t *schedInit(void ** __restrict data, size_t datlen);
269: #define schedBegin() schedInit((void**) &schedRegisterHooks, 0)
270: /*
271: * schedEnd() - End scheduler & free all resources
272: *
273: * @root = root task
274: * return: -1 error or 0 ok
275: */
276: int schedEnd(sched_root_task_t ** __restrict root);
277: /*
278: * schedRegisterHooks() - Register IO handles and bind tasks to it
279: *
280: * @root = root task
281: * return: -1 error or 0 ok
282: */
283: int schedRegisterHooks(sched_root_task_t * __restrict root);
284: /*
285: * sched_useTask() - Get and init new task
286: *
287: * @root = root task
288: * return: NULL error or !=NULL prepared task
289: */
290: sched_task_t *sched_useTask(sched_root_task_t * __restrict root);
291: /*
292: * sched_unuseTask() - Unlock and put task to unuse queue
293: *
294: * @task = task
295: * return: always is NULL
296: */
297: sched_task_t *sched_unuseTask(sched_task_t * __restrict task);
298: /*
299: * schedPolling() - Polling timeout period if no timer task is present
300: *
301: * @root = root task
302: * @ts = timeout polling period, if ==NULL INFINIT timeout
303: * @tsold = old timeout polling if !=NULL
304: * return: -1 error or 0 ok
305: */
306: int schedPolling(sched_root_task_t * __restrict root,
307: struct timespec * __restrict ts, struct timespec * __restrict tsold);
308: /*
309: * schedTermCondition() - Activate hook for scheduler condition kill
310: *
311: * @root = root task
312: * @condValue = condition value, kill schedRun() if condValue == killState
313: * return: -1 error or 0 ok
314: */
315: int schedTermCondition(sched_root_task_t * __restrict root, intptr_t * __restrict condValue);
316: /*
317: * schedCall() - Call task execution function
318: *
319: * @task = current task
320: * return: !=NULL error or =NULL ok
321: */
322: void *schedCall(sched_task_t * __restrict task);
323: /*
324: * schedFetch() - Fetch ready task
325: *
326: * @root = root task
327: * return: =NULL error or !=NULL ready task
328: */
329: void *schedFetch(sched_root_task_t * __restrict root);
330: /*
331: * schedRun() - Scheduler *run loop*
332: *
333: * @root = root task
334: * @killState = kill condition variable, if !=0 stop scheduler loop
335: * return: -1 error or 0 ok
336: */
337: int schedRun(sched_root_task_t *root, volatile intptr_t * __restrict killState);
338: /*
339: * schedCancel() - Cancel task from scheduler
340: *
341: * @task = task
342: * return: -1 error or 0 ok
343: */
344: int schedCancel(sched_task_t * __restrict task);
345: /*
346: * schedCancelby() - Cancel task from scheduler by criteria
347: *
348: * @root = root task
349: * @type = cancel from queue type, if =taskMAX cancel same task from all queues
350: * @criteria = find task by criteria
351: * [ CRITERIA_ANY|CRITERIA_CALL|CRITERIA_ARG|CRITERIA_FD|CRITERIA_VAL|
352: * CRITERIA_ID|CRITERIA_TS|CRITERIA_DATA|CRITERIA_DATLEN ]
353: * @param = search parameter
354: * @hook = custom cleanup hook function, may be NULL
355: * return: -1 error, -2 error in sub-stage cancel execution, -3 error from custom hook or 0 ok
356: */
357: int schedCancelby(sched_root_task_t * __restrict root, sched_task_type_t type,
358: unsigned char criteria, void *param, sched_hook_func_t hook);
359: /*
360: * schedQuery() - Query task in scheduler
361: *
362: * @task = task
363: * return: -1 error, 0 found and 1 not found
364: */
365: int schedQuery(sched_task_t * __restrict task);
366: /*
367: * schedQueryby() - Query task in scheduler by criteria
368: *
369: * @root = root task
370: * @type = query from queue type, if =taskMAX query same task from all queues
371: * @criteria = find task by criteria
372: * [ CRITERIA_ANY|CRITERIA_CALL|CRITERIA_ARG|CRITERIA_FD|CRITERIA_VAL|
373: * CRITERIA_ID|CRITERIA_TS|CRITERIA_DATA|CRITERIA_DATLEN ]
374: * @param = search parameter
375: * return: -1 error, 0 found or 1 not found
376: */
377: int schedQueryby(sched_root_task_t * __restrict root, sched_task_type_t type,
378: unsigned char criteria, void *param);
379:
380:
381: /*
382: * schedReadExt() - Add READ I/O task to scheduler queue with custom event mask
383: *
384: * @root = root task
385: * @func = task execution function
386: * @arg = 1st func argument
387: * @fd = fd handle
388: * @opt_data = Optional data
389: * @opt_dlen = Optional data length
390: * @mask = Event mask
391: * return: NULL error or !=NULL new queued task
392: */
393: sched_task_t *schedReadExt(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg,
394: int fd, void *opt_data, size_t opt_dlen, unsigned long mask);
395: /*
396: * schedRead() - Add READ I/O task to scheduler queue
397: *
398: * @root = root task
399: * @func = task execution function
400: * @arg = 1st func argument
401: * @fd = fd handle
402: * @opt_data = Optional data
403: * @opt_dlen = Optional data length
404: * return: NULL error or !=NULL new queued task
405: */
406: sched_task_t *schedRead(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg,
407: int fd, void *opt_data, size_t opt_dlen);
408: #define schedReadSelf(x) schedReadExt(TASK_ROOT((x)), TASK_FUNC((x)), TASK_ARG((x)), \
409: TASK_FD((x)), TASK_DATA((x)), TASK_DATLEN((x)), TASK_HARG((x)))
410: /*
411: * schedWrite() - Add WRITE I/O task to scheduler queue
412: *
413: * @root = root task
414: * @func = task execution function
415: * @arg = 1st func argument
416: * @fd = fd handle
417: * @opt_data = Optional data
418: * @opt_dlen = Optional data length
419: * return: NULL error or !=NULL new queued task
420: */
421: sched_task_t *schedWrite(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg,
422: int fd, void *opt_data, size_t opt_dlen);
423: #define schedWriteSelf(x) schedWrite(TASK_ROOT((x)), TASK_FUNC((x)), TASK_ARG((x)), \
424: TASK_FD((x)), TASK_DATA((x)), TASK_DATLEN((x)))
425: /*
426: * schedAlarm() - Add ALARM task to scheduler queue
427: *
428: * @root = root task
429: * @func = task execution function
430: * @arg = 1st func argument
431: * @ts = timeout argument structure, minimum alarm timer resolution is 1msec!
432: * @opt_data = Alarm timer ID
433: * @opt_dlen = Optional data length
434: * return: NULL error or !=NULL new queued task
435: */
436: sched_task_t *schedAlarm(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg,
437: struct timespec ts, void *opt_data, size_t opt_dlen);
438: #define schedAlarmSelf(x) schedAlarm(TASK_ROOT((x)), TASK_FUNC((x)), TASK_ARG((x)), \
439: TASK_TS((x)), TASK_DATA((x)), TASK_DATLEN((x)))
440: /*
441: * schedRTC() - Add RTC task to scheduler queue
442: *
443: * @root = root task
444: * @func = task execution function
445: * @arg = 1st func argument
446: * @ts = timeout argument structure, minimum alarm timer resolution is 1msec!
447: * @opt_data = Optional RTC ID
448: * @opt_dlen = Optional data length
449: * return: NULL error or !=NULL new queued task
450: */
451: sched_task_t *schedRTC(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg,
452: struct timespec ts, void *opt_data, size_t opt_dlen);
453: #define schedRTCSelf(x) schedRTC(TASK_ROOT((x)), TASK_FUNC((x)), TASK_ARG((x)), \
454: TASK_TS((x)), TASK_DATA((x)), TASK_DATLEN((x)))
455: /*
456: * schedNode() - Add NODE task to scheduler queue
457: *
458: * @root = root task
459: * @func = task execution function
460: * @arg = 1st func argument
461: * @fd = fd handle
462: * @opt_data = Optional data
463: * @opt_dlen = Optional data length
464: * return: NULL error or !=NULL new queued task
465: */
466: sched_task_t *schedNode(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg,
467: int fd, void *opt_data, size_t opt_dlen);
468: #define schedNodeSelf(x) schedNode(TASK_ROOT((x)), TASK_FUNC((x)), TASK_ARG((x)), \
469: TASK_FD((x)), TASK_DATA((x)), TASK_DATLEN((x)))
470: /*
471: * schedNode2() - Add NODE task with all events to scheduler queue
472: *
473: * @root = root task
474: * @func = task execution function
475: * @arg = 1st func argument
476: * @fd = fd handle
477: * @opt_data = Optional data
478: * @opt_dlen = Optional data length
479: * return: NULL error or !=NULL new queued task
480: */
481: sched_task_t *schedNode2(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg,
482: int fd, void *opt_data, size_t opt_dlen);
483: #define schedNode2Self(x) schedNode2(TASK_ROOT((x)), TASK_FUNC((x)), TASK_ARG((x)), \
484: TASK_FD((x)), TASK_DATA((x)), TASK_DATLEN((x)))
485: /*
486: * schedProc() - Add PROC task to scheduler queue
487: *
488: * @root = root task
489: * @func = task execution function
490: * @arg = 1st func argument
491: * @pid = PID
492: * @opt_data = Optional data
493: * @opt_dlen = Optional data length
494: * return: NULL error or !=NULL new queued task
495: */
496: sched_task_t *schedProc(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg,
497: unsigned long pid, void *opt_data, size_t opt_dlen);
498: #define schedProcSelf(x) schedProc(TASK_ROOT((x)), TASK_FUNC((x)), TASK_ARG((x)), \
499: TASK_VAL((x)), TASK_DATA((x)), TASK_DATLEN((x)))
500: /*
501: * schedSignal() - Add SIGNAL task to scheduler queue
502: *
503: * @root = root task
504: * @func = task execution function
505: * @arg = 1st func argument
506: * @sig = Signal
507: * @opt_data = Optional data
508: * @opt_dlen = Optional data length
509: * return: NULL error or !=NULL new queued task
510: */
511: sched_task_t *schedSignal(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg,
512: unsigned long sig, void *opt_data, size_t opt_dlen);
513: #define schedSignalSelf(x) schedSignal(TASK_ROOT((x)), TASK_FUNC((x)), TASK_ARG((x)), \
514: TASK_VAL((x)), TASK_DATA((x)), TASK_DATLEN((x)))
515:
516: #ifdef EVFILT_LIO
517: /*
518: * schedAIO() - Add AIO task to scheduler queue
519: *
520: * @root = root task
521: * @func = task execution function
522: * @arg = 1st func argument
523: * @acb = AIO cb structure address
524: * @opt_data = Optional data
525: * @opt_dlen = Optional data length
526: * return: NULL error or !=NULL new queued task
527: */
528: sched_task_t *schedAIO(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg,
529: struct aiocb * __restrict acb, void *opt_data, size_t opt_dlen);
530: /*
531: * schedAIORead() - Add AIO read task to scheduler queue
532: *
533: * @root = root task
534: * @func = task execution function
535: * @arg = 1st func argument
536: * @fd = file descriptor
537: * @buffer = Buffer
538: * @buflen = Buffer length
539: * @offset = Offset from start of file, if =-1 from current position
540: * return: NULL error or !=NULL new queued task
541: */
542: sched_task_t *schedAIORead(sched_root_task_t * __restrict root, sched_task_func_t func,
543: void *arg, int fd, void *buffer, size_t buflen, off_t offset);
544: /*
545: * schedAIOWrite() - Add AIO write task to scheduler queue
546: *
547: * @root = root task
548: * @func = task execution function
549: * @arg = 1st func argument
550: * @fd = file descriptor
551: * @buffer = Buffer
552: * @buflen = Buffer length
553: * @offset = Offset from start of file, if =-1 from current position
554: * return: NULL error or !=NULL new queued task
555: */
556: sched_task_t *schedAIOWrite(sched_root_task_t * __restrict root, sched_task_func_t func,
557: void *arg, int fd, void *buffer, size_t buflen, off_t offset);
558:
559: /*
560: * schedLIO() - Add AIO bulk tasks to scheduler queue
561: *
562: * @root = root task
563: * @func = task execution function
564: * @arg = 1st func argument
565: * @acbs = AIO cb structure addresses
566: * @opt_data = Optional data
567: * @opt_dlen = Optional data length
568: * return: NULL error or !=NULL new queued task
569: */
570: sched_task_t *schedLIO(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg,
571: struct aiocb ** __restrict acbs, void *opt_data, size_t opt_dlen);
572: /*
573: * schedLIORead() - Add list of AIO read tasks to scheduler queue
574: *
575: * @root = root task
576: * @func = task execution function
577: * @arg = 1st func argument
578: * @fd = file descriptor
579: * @bufs = Buffer's list
580: * @nbufs = Number of Buffers
581: * @offset = Offset from start of file, if =-1 from current position
582: * return: NULL error or !=NULL new queued task
583: */
584: sched_task_t *schedLIORead(sched_root_task_t * __restrict root, sched_task_func_t func,
585: void *arg, int fd, struct iovec *bufs, size_t nbufs, off_t offset);
586: /*
587: * schedLIOWrite() - Add list of AIO write tasks to scheduler queue
588: *
589: * @root = root task
590: * @func = task execution function
591: * @arg = 1st func argument
592: * @fd = file descriptor
593: * @bufs = Buffer's list
594: * @nbufs = Number of Buffers
595: * @offset = Offset from start of file, if =-1 from current position
596: * return: NULL error or !=NULL new queued task
597: */
598: sched_task_t *schedLIOWrite(sched_root_task_t * __restrict root, sched_task_func_t func,
599: void *arg, int fd, struct iovec *bufs, size_t nbufs, off_t offset);
600: #endif /* EVFILT_LIO */
601:
602: /*
603: * schedUser() - Add trigger USER task to scheduler queue
604: *
605: * @root = root task
606: * @func = task execution function
607: * @arg = 1st func argument
608: * @id = Trigger ID
609: * @opt_data = Optional data
610: * @opt_dlen = Optional user's trigger flags
611: * return: NULL error or !=NULL new queued task
612: */
613: sched_task_t *schedUser(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg,
614: unsigned long id, void *opt_data, size_t opt_dlen);
615: #define schedUserSelf(x) schedUser(TASK_ROOT((x)), TASK_FUNC((x)), TASK_ARG((x)), \
616: TASK_VAL((x)), TASK_DATA((x)), TASK_DATLEN((x)))
617: /*
618: * schedTrigger() - Triggering USER task
619: *
620: * @task = task
621: * return: -1 error or 0 ok
622: */
623: int schedTrigger(sched_task_t * __restrict task);
624:
625: /*
626: * schedTimer() - Add TIMER task to scheduler queue
627: *
628: * @root = root task
629: * @func = task execution function
630: * @arg = 1st func argument
631: * @ts = timeout argument structure
632: * @opt_data = Optional data
633: * @opt_dlen = Optional data length
634: * return: NULL error or !=NULL new queued task
635: */
636: sched_task_t *schedTimer(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg,
637: struct timespec ts, void *opt_data, size_t opt_dlen);
638: /*
639: * schedEvent() - Add EVENT task to scheduler queue
640: *
641: * @root = root task
642: * @func = task execution function
643: * @arg = 1st func argument
644: * @val = additional func argument
645: * @opt_data = Optional data
646: * @opt_dlen = Optional data length
647: * return: NULL error or !=NULL new queued task
648: */
649: sched_task_t *schedEvent(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg,
650: unsigned long val, void *opt_data, size_t opt_dlen);
651: #define schedEventSelf(x) schedEvent(TASK_ROOT((x)), TASK_FUNC((x)), TASK_ARG((x)), \
652: TASK_VAL((x)), TASK_DATA((x)), TASK_DATLEN((x)))
653: /*
654: * schedTask() - Add regular task to scheduler queue
655: *
656: * @root = root task
657: * @func = task execution function
658: * @arg = 1st func argument
659: * @prio = regular task priority, 0 is hi priority for regular tasks
660: * @opt_data = Optional data
661: * @opt_dlen = Optional data length
662: * return: NULL error or !=NULL new queued task
663: */
664: sched_task_t *schedTask(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg,
665: unsigned long prio, void *opt_data, size_t opt_dlen);
666: #define schedTaskSelf(x) schedTask(TASK_ROOT((x)), TASK_FUNC((x)), TASK_ARG((x)), \
667: TASK_VAL((x)), TASK_DATA((x)), TASK_DATLEN((x)))
668: /*
669: * schedSuspend() - Add Suspended task to scheduler queue
670: *
671: * @root = root task
672: * @func = task execution function
673: * @arg = 1st func argument
674: * @id = Trigger ID
675: * @opt_data = Optional data
676: * @opt_dlen = Optional user's trigger flags
677: * return: NULL error or !=NULL new queued task
678: */
679: sched_task_t *schedSuspend(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg,
680: unsigned long id, void *opt_data, size_t opt_dlen);
681: #define schedSuspendSelf(x) schedUser(TASK_ROOT((x)), TASK_FUNC((x)), TASK_ARG((x)), \
682: TASK_VAL((x)), TASK_DATA((x)), TASK_DATLEN((x)))
683: /*
684: * schedResumeby() - Resume suspended task
685: *
686: * @root = root task
687: * @criteria = find task by criteria
688: * [ CRITERIA_ANY|CRITERIA_ID|CRITERIA_VAL|CRITERIA_DATA ]
689: * @param = search parameter (sched_task_t *task| unsigned long id)
690: * return: -1 error or 0 resumed ok
691: */
692: int schedResumeby(sched_root_task_t * __restrict root, unsigned char criteria, void *param);
693:
694: /*
695: * schedCallOnce() - Call once from scheduler
696: *
697: * @root = root task
698: * @func = task execution function
699: * @arg = 1st func argument
700: * @val = additional func argument
701: * @opt_data = Optional data
702: * @opt_dlen = Optional data length
703: * return: return value from called func
704: */
705: sched_task_t *schedCallOnce(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg,
706: unsigned long val, void *opt_data, size_t opt_dlen);
707: #define schedCallAgain(x) schedCallOnce(TASK_ROOT((x)), TASK_FUNC((x)), TASK_ARG((x)), \
708: TASK_VAL((x)), TASK_DATA((x)), TASK_DATLEN((x)))
709:
710: /*
711: * schedThread() - Add thread task to scheduler queue
712: *
713: * @root = root task
714: * @func = task execution function
715: * @arg = 1st func argument
716: * @ss = stack size
717: * @opt_data = Optional data
718: * @opt_dlen = Optional data length
719: * return: NULL error or !=NULL new queued task
720: */
721: sched_task_t *schedThread(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg,
722: size_t ss, void *opt_data, size_t opt_dlen);
723: #define schedThreadSelf(x) schedThread(TASK_ROOT((x)), TASK_FUNC((x)), TASK_ARG((x)), \
724: (size_t) TASK_FLAG((x)), TASK_DATA((x)), TASK_DATLEN((x)))
725: /*
726: * sched_taskExit() - Exit routine for scheduler task, explicit required for thread tasks
727: *
728: * @task = current task
729: * @retcode = return code
730: * return: return code
731: */
732: void *sched_taskExit(sched_task_t *task, intptr_t retcode);
733: /*
734: * taskExit() - Exit helper for scheduler task
735: *
736: * @t = current executed task
737: * @x = exit value for task
738: * return: none
739: */
740: #define taskExit(t, x) return sched_taskExit((t), (intptr_t) (x))
741:
742:
743: #endif
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