Annotation of libaitsched/inc/aitsched.h, revision 1.2.2.5
1.1 misho 1: /*************************************************************************
2: * (C) 2011 AITNET ltd - Sofia/Bulgaria - <misho@aitbg.com>
3: * by Michael Pounov <misho@openbsd-bg.org>
4: *
5: * $Author: misho $
1.2.2.5 ! misho 6: * $Id: aitsched.h,v 1.2.2.4 2011/10/04 23:03:31 misho Exp $
1.1 misho 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
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:
1.2 misho 50: #include <sys/types.h>
51: #include <sys/queue.h>
52: #include <sys/uio.h>
1.2.2.5 ! misho 53: #include <stdint.h>
1.2 misho 54:
55:
1.1 misho 56: /* criteria type */
57: #define CRITERIA_CALL 0
58: #define CRITERIA_ARG 1
59: #define CRITERIA_FD 2
60: #define CRITERIA_VAL 3
61: #define CRITERIA_TV 4
62:
63:
64: /* early declaration for root & task */
65: typedef struct sched_Task sched_task_t;
66: typedef struct sched_RootTask sched_root_task_t;
67:
68: typedef enum {
69: taskREAD = 0,
70: taskWRITE,
71: taskTIMER,
72: taskEVENT,
73: taskREADY,
74: taskUNUSE,
75: taskMAX
76: } sched_task_type_t;
77:
78: /* hooks */
79: typedef void *(*sched_hook_func_t)(void *, void *);
80: struct sched_HooksTask {
81: struct {
82: /* read(sched_task_t *task, NULL) -> int */
83: sched_hook_func_t read;
84: /* write(sched_task_t *task, NULL) -> int */
85: sched_hook_func_t write;
86: /* event(sched_task_t *task, NULL) -> int */
87: sched_hook_func_t event;
88: /* eventlo(sched_task_t *task, NULL) -> int */
89: sched_hook_func_t eventlo;
90: /* timer(sched_task_t *task, struct timeval *tv) -> int */
91: sched_hook_func_t timer;
92: } hook_add;
93: struct {
94: /* cancel(sched_task_t *task, NULL) -> int */
95: sched_hook_func_t cancel;
96: /* run(sched_root_task_t *root, NULL) -> int */
97: sched_hook_func_t run;
98: /* fetch(sched_root_task_t *root, NULL) -> sched_task_t* */
99: sched_hook_func_t fetch;
1.2.2.1 misho 100: /* exception(sched_root_task_t *root, NULL) -> int */
101: sched_hook_func_t exception;
1.1 misho 102: } hook_exec;
103: struct {
104: /* init(sched_root_task_t *root, void *data) -> int */
105: sched_hook_func_t init;
106: /* fini(sched_root_task_t *root, NULL) -> int */
107: sched_hook_func_t fini;
1.2.2.2 misho 108: /* error(sched_root_task_t *root, int errno) -> int */
109: sched_hook_func_t error;
1.1 misho 110: } hook_root;
111: };
112: typedef struct sched_HooksTask hooks_task_t;
113:
114: /* task callback, like pthread callback! */
1.2 misho 115: typedef void *(*sched_task_func_t)(sched_task_t * /* current task data*/);
1.1 misho 116:
117: /* task & queue */
118: struct sched_Task {
119: unsigned int task_id;
120: sched_task_type_t task_type;
121:
122: sched_root_task_t *task_root;
1.2 misho 123: #define TASK_ROOT(x) (x)->task_root
1.1 misho 124: sched_task_func_t task_func;
125:
126: void *task_arg;
127: union {
128: unsigned long v;
1.2.2.4 misho 129: intptr_t fd;
1.1 misho 130: struct timeval tv;
131: } task_val;
132: #define TASK_ARG(x) (x)->task_arg
133: #define TASK_VAL(x) (x)->task_val.v
134: #define TASK_FD(x) (x)->task_val.fd
135: #define TASK_TV(x) (x)->task_val.tv
136:
137: struct iovec task_data;
138: #define TASK_DATA(x) (x)->task_data.iov_base
139: #define TASK_DATLEN(x) (x)->task_data.iov_len
140:
141: TAILQ_ENTRY(sched_Task) task_node;
142: };
143: typedef TAILQ_HEAD(, sched_Task) sched_queue_t;
144:
145: /* root task */
146: struct sched_RootTask {
147: int root_kq;
148: struct timeval root_wait;
149:
150: sched_queue_t root_read;
151: sched_queue_t root_write;
152: sched_queue_t root_timer;
153: sched_queue_t root_event;
154: sched_queue_t root_ready;
155: sched_queue_t root_unuse;
156: sched_queue_t root_eventlo;
157: int root_eventlo_miss;
158:
159: hooks_task_t root_hooks;
160: struct iovec root_data;
161: #define ROOT_DATA(x) (x)->root_data.iov_base
162: #define ROOT_DATLEN(x) (x)->root_data.iov_len
163: };
164:
165:
1.2 misho 166: inline int sched_GetErrno();
167: inline const char *sched_GetError();
168: inline void sched_SetErr(int, char *, ...);
169:
170:
1.1 misho 171: /*
172: * schedInit() - Init scheduler
173: * @data = optional data if !=NULL
174: * @datlen = data len if data is set
175: * return: allocated root task if ok or NULL error
176: */
177: sched_root_task_t *schedInit(void ** __restrict data, size_t datlen);
1.2 misho 178: #define schedBegin() schedInit((void**) &schedRegisterHooks, 0)
1.1 misho 179: /*
180: * schedEnd() - End scheduler & free all resources
181: * @root = root task
182: * return: -1 error or 0 ok
183: */
1.2 misho 184: int schedEnd(sched_root_task_t ** __restrict root);
1.1 misho 185: /*
1.2 misho 186: * schedRegisterHooks() - Register IO handles and bind tasks to it
1.1 misho 187: * @root = root task
188: * return: -1 error or 0 ok
189: */
1.2 misho 190: int schedRegisterHooks(sched_root_task_t * __restrict root);
1.1 misho 191: /*
192: * schedCall() - Call task execution function
193: * @task = current task
194: * return: !=NULL error or =NULL ok
195: */
196: inline void *schedCall(sched_task_t * __restrict task);
197: /*
198: * schedFetch() - Fetch ready task
199: * @root = root task
200: * return: =NULL error or !=NULL ready task
201: */
202: inline void *schedFetch(sched_root_task_t * __restrict root);
203: /*
204: * schedRun() - Scheduler *run loop*
205: * @root = root task
1.2 misho 206: * @killState = kill condition variable, if !=0 stop scheduler loop
1.1 misho 207: * return: -1 error or 0 ok
208: */
1.2 misho 209: int schedRun(sched_root_task_t * __restrict root, volatile intptr_t * __restrict killState);
1.1 misho 210: /*
211: * schedCancel() - Cancel task from scheduler
212: * @task = task
213: * return: -1 error or 0 ok
214: */
215: int schedCancel(sched_task_t * __restrict task);
216: /*
217: * schedCancelby() - Cancel task from scheduler by criteria
218: * @root = root task
219: * @queue = cancel from queue, if =NULL cancel same task from all queues
220: * @criteria = find task by criteria [CRITERIA_CALL|CRITERIA_ARG|CRITERIA_FD|CRITERIA_VAL|CRITERIA_TV]
221: * @param = search parameter
222: * @hook = custom cleanup hook function, may be NULL
223: * return: -1 error or 0 ok
224: */
225: int schedCancelby(sched_root_task_t * __restrict root, sched_queue_t * __restrict queue,
226: u_char criteria, void *param, sched_hook_func_t hook);
227:
228:
229: /*
1.2 misho 230: * schedRead() - Add READ I/O task to scheduler queue
1.1 misho 231: * @root = root task
232: * @func = task execution function
233: * @arg = 1st func argument
1.2 misho 234: * @fd = fd handle
1.1 misho 235: * return: NULL error or !=NULL new queued task
236: */
1.2 misho 237: sched_task_t *schedRead(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg, int fd);
1.1 misho 238: /*
1.2 misho 239: * schedWrite() - Add WRITE I/O task to scheduler queue
1.1 misho 240: * @root = root task
241: * @func = task execution function
242: * @arg = 1st func argument
1.2 misho 243: * @fd = fd handle
1.1 misho 244: * return: NULL error or !=NULL new queued task
245: */
1.2 misho 246: sched_task_t *schedWrite(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg, int fd);
1.1 misho 247: /*
248: * schedTimer() - Add TIMER task to scheduler queue
249: * @root = root task
250: * @func = task execution function
251: * @arg = 1st func argument
1.2.2.3 misho 252: * @tv = timeout argument structure
1.1 misho 253: * return: NULL error or !=NULL new queued task
254: */
1.2.2.3 misho 255: sched_task_t *schedTimer(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg, struct timeval tv);
1.1 misho 256: /*
257: * schedEvent() - Add EVENT task to scheduler queue
258: * @root = root task
259: * @func = task execution function
260: * @arg = 1st func argument
1.2 misho 261: * @val = additional func argument
1.1 misho 262: * return: NULL error or !=NULL new queued task
263: */
1.2 misho 264: sched_task_t *schedEvent(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg, unsigned long val);
1.1 misho 265: /*
266: * schedEventLo() - Add EVENT_Lo task to scheduler queue
267: * @root = root task
268: * @func = task execution function
269: * @arg = 1st func argument
1.2 misho 270: * @val = additional func argument
1.1 misho 271: * return: NULL error or !=NULL new queued task
272: */
1.2 misho 273: sched_task_t *schedEventLo(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg, unsigned long val);
1.1 misho 274: /*
275: * schedCallOnce() - Call once from scheduler
276: * @root = root task
277: * @func = task execution function
278: * @arg = 1st func argument
1.2 misho 279: * @val = additional func argument
280: * return: return value from called func
1.1 misho 281: */
1.2 misho 282: sched_task_t *schedCallOnce(sched_root_task_t * __restrict root, sched_task_func_t func, void *arg, unsigned long val);
1.1 misho 283:
284:
285: #endif
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/cvsweb/back.gif){kind=icon}
Return to aitsched.h CVS log ![[TXT]](/icons/cvsweb/text.gif){kind=icon}
![[DIR]](/icons/cvsweb/dir.gif){kind=icon}
Up to [ELWIX - Embedded LightWeight unIX -] / libaitsched / inc