diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
---|---|---|
committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/scsi/aic7xxx/queue.h |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'drivers/scsi/aic7xxx/queue.h')
-rw-r--r-- | drivers/scsi/aic7xxx/queue.h | 501 |
1 files changed, 501 insertions, 0 deletions
diff --git a/drivers/scsi/aic7xxx/queue.h b/drivers/scsi/aic7xxx/queue.h new file mode 100644 index 000000000000..8adf8003a164 --- /dev/null +++ b/drivers/scsi/aic7xxx/queue.h | |||
@@ -0,0 +1,501 @@ | |||
1 | /* | ||
2 | * Copyright (c) 1991, 1993 | ||
3 | * The Regents of the University of California. All rights reserved. | ||
4 | * | ||
5 | * Redistribution and use in source and binary forms, with or without | ||
6 | * modification, are permitted provided that the following conditions | ||
7 | * are met: | ||
8 | * 1. Redistributions of source code must retain the above copyright | ||
9 | * notice, this list of conditions and the following disclaimer. | ||
10 | * 2. Redistributions in binary form must reproduce the above copyright | ||
11 | * notice, this list of conditions and the following disclaimer in the | ||
12 | * documentation and/or other materials provided with the distribution. | ||
13 | * | ||
14 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | ||
15 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
16 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | ||
17 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | ||
18 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | ||
19 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | ||
20 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | ||
21 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | ||
22 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | ||
23 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | ||
24 | * SUCH DAMAGE. | ||
25 | * | ||
26 | * @(#)queue.h 8.5 (Berkeley) 8/20/94 | ||
27 | * $FreeBSD: src/sys/sys/queue.h,v 1.38 2000/05/26 02:06:56 jake Exp $ | ||
28 | */ | ||
29 | |||
30 | #ifndef _SYS_QUEUE_H_ | ||
31 | #define _SYS_QUEUE_H_ | ||
32 | |||
33 | /* | ||
34 | * This file defines five types of data structures: singly-linked lists, | ||
35 | * singly-linked tail queues, lists, tail queues, and circular queues. | ||
36 | * | ||
37 | * A singly-linked list is headed by a single forward pointer. The elements | ||
38 | * are singly linked for minimum space and pointer manipulation overhead at | ||
39 | * the expense of O(n) removal for arbitrary elements. New elements can be | ||
40 | * added to the list after an existing element or at the head of the list. | ||
41 | * Elements being removed from the head of the list should use the explicit | ||
42 | * macro for this purpose for optimum efficiency. A singly-linked list may | ||
43 | * only be traversed in the forward direction. Singly-linked lists are ideal | ||
44 | * for applications with large datasets and few or no removals or for | ||
45 | * implementing a LIFO queue. | ||
46 | * | ||
47 | * A singly-linked tail queue is headed by a pair of pointers, one to the | ||
48 | * head of the list and the other to the tail of the list. The elements are | ||
49 | * singly linked for minimum space and pointer manipulation overhead at the | ||
50 | * expense of O(n) removal for arbitrary elements. New elements can be added | ||
51 | * to the list after an existing element, at the head of the list, or at the | ||
52 | * end of the list. Elements being removed from the head of the tail queue | ||
53 | * should use the explicit macro for this purpose for optimum efficiency. | ||
54 | * A singly-linked tail queue may only be traversed in the forward direction. | ||
55 | * Singly-linked tail queues are ideal for applications with large datasets | ||
56 | * and few or no removals or for implementing a FIFO queue. | ||
57 | * | ||
58 | * A list is headed by a single forward pointer (or an array of forward | ||
59 | * pointers for a hash table header). The elements are doubly linked | ||
60 | * so that an arbitrary element can be removed without a need to | ||
61 | * traverse the list. New elements can be added to the list before | ||
62 | * or after an existing element or at the head of the list. A list | ||
63 | * may only be traversed in the forward direction. | ||
64 | * | ||
65 | * A tail queue is headed by a pair of pointers, one to the head of the | ||
66 | * list and the other to the tail of the list. The elements are doubly | ||
67 | * linked so that an arbitrary element can be removed without a need to | ||
68 | * traverse the list. New elements can be added to the list before or | ||
69 | * after an existing element, at the head of the list, or at the end of | ||
70 | * the list. A tail queue may be traversed in either direction. | ||
71 | * | ||
72 | * A circle queue is headed by a pair of pointers, one to the head of the | ||
73 | * list and the other to the tail of the list. The elements are doubly | ||
74 | * linked so that an arbitrary element can be removed without a need to | ||
75 | * traverse the list. New elements can be added to the list before or after | ||
76 | * an existing element, at the head of the list, or at the end of the list. | ||
77 | * A circle queue may be traversed in either direction, but has a more | ||
78 | * complex end of list detection. | ||
79 | * | ||
80 | * For details on the use of these macros, see the queue(3) manual page. | ||
81 | * | ||
82 | * | ||
83 | * SLIST LIST STAILQ TAILQ CIRCLEQ | ||
84 | * _HEAD + + + + + | ||
85 | * _HEAD_INITIALIZER + + + + + | ||
86 | * _ENTRY + + + + + | ||
87 | * _INIT + + + + + | ||
88 | * _EMPTY + + + + + | ||
89 | * _FIRST + + + + + | ||
90 | * _NEXT + + + + + | ||
91 | * _PREV - - - + + | ||
92 | * _LAST - - + + + | ||
93 | * _FOREACH + + + + + | ||
94 | * _FOREACH_REVERSE - - - + + | ||
95 | * _INSERT_HEAD + + + + + | ||
96 | * _INSERT_BEFORE - + - + + | ||
97 | * _INSERT_AFTER + + + + + | ||
98 | * _INSERT_TAIL - - + + + | ||
99 | * _REMOVE_HEAD + - + - - | ||
100 | * _REMOVE + + + + + | ||
101 | * | ||
102 | */ | ||
103 | |||
104 | /* | ||
105 | * Singly-linked List declarations. | ||
106 | */ | ||
107 | #define SLIST_HEAD(name, type) \ | ||
108 | struct name { \ | ||
109 | struct type *slh_first; /* first element */ \ | ||
110 | } | ||
111 | |||
112 | #define SLIST_HEAD_INITIALIZER(head) \ | ||
113 | { NULL } | ||
114 | |||
115 | #define SLIST_ENTRY(type) \ | ||
116 | struct { \ | ||
117 | struct type *sle_next; /* next element */ \ | ||
118 | } | ||
119 | |||
120 | /* | ||
121 | * Singly-linked List functions. | ||
122 | */ | ||
123 | #define SLIST_EMPTY(head) ((head)->slh_first == NULL) | ||
124 | |||
125 | #define SLIST_FIRST(head) ((head)->slh_first) | ||
126 | |||
127 | #define SLIST_FOREACH(var, head, field) \ | ||
128 | for ((var) = SLIST_FIRST((head)); \ | ||
129 | (var); \ | ||
130 | (var) = SLIST_NEXT((var), field)) | ||
131 | |||
132 | #define SLIST_INIT(head) do { \ | ||
133 | SLIST_FIRST((head)) = NULL; \ | ||
134 | } while (0) | ||
135 | |||
136 | #define SLIST_INSERT_AFTER(slistelm, elm, field) do { \ | ||
137 | SLIST_NEXT((elm), field) = SLIST_NEXT((slistelm), field); \ | ||
138 | SLIST_NEXT((slistelm), field) = (elm); \ | ||
139 | } while (0) | ||
140 | |||
141 | #define SLIST_INSERT_HEAD(head, elm, field) do { \ | ||
142 | SLIST_NEXT((elm), field) = SLIST_FIRST((head)); \ | ||
143 | SLIST_FIRST((head)) = (elm); \ | ||
144 | } while (0) | ||
145 | |||
146 | #define SLIST_NEXT(elm, field) ((elm)->field.sle_next) | ||
147 | |||
148 | #define SLIST_REMOVE(head, elm, type, field) do { \ | ||
149 | if (SLIST_FIRST((head)) == (elm)) { \ | ||
150 | SLIST_REMOVE_HEAD((head), field); \ | ||
151 | } \ | ||
152 | else { \ | ||
153 | struct type *curelm = SLIST_FIRST((head)); \ | ||
154 | while (SLIST_NEXT(curelm, field) != (elm)) \ | ||
155 | curelm = SLIST_NEXT(curelm, field); \ | ||
156 | SLIST_NEXT(curelm, field) = \ | ||
157 | SLIST_NEXT(SLIST_NEXT(curelm, field), field); \ | ||
158 | } \ | ||
159 | } while (0) | ||
160 | |||
161 | #define SLIST_REMOVE_HEAD(head, field) do { \ | ||
162 | SLIST_FIRST((head)) = SLIST_NEXT(SLIST_FIRST((head)), field); \ | ||
163 | } while (0) | ||
164 | |||
165 | /* | ||
166 | * Singly-linked Tail queue declarations. | ||
167 | */ | ||
168 | #define STAILQ_HEAD(name, type) \ | ||
169 | struct name { \ | ||
170 | struct type *stqh_first;/* first element */ \ | ||
171 | struct type **stqh_last;/* addr of last next element */ \ | ||
172 | } | ||
173 | |||
174 | #define STAILQ_HEAD_INITIALIZER(head) \ | ||
175 | { NULL, &(head).stqh_first } | ||
176 | |||
177 | #define STAILQ_ENTRY(type) \ | ||
178 | struct { \ | ||
179 | struct type *stqe_next; /* next element */ \ | ||
180 | } | ||
181 | |||
182 | /* | ||
183 | * Singly-linked Tail queue functions. | ||
184 | */ | ||
185 | #define STAILQ_EMPTY(head) ((head)->stqh_first == NULL) | ||
186 | |||
187 | #define STAILQ_FIRST(head) ((head)->stqh_first) | ||
188 | |||
189 | #define STAILQ_FOREACH(var, head, field) \ | ||
190 | for((var) = STAILQ_FIRST((head)); \ | ||
191 | (var); \ | ||
192 | (var) = STAILQ_NEXT((var), field)) | ||
193 | |||
194 | #define STAILQ_INIT(head) do { \ | ||
195 | STAILQ_FIRST((head)) = NULL; \ | ||
196 | (head)->stqh_last = &STAILQ_FIRST((head)); \ | ||
197 | } while (0) | ||
198 | |||
199 | #define STAILQ_INSERT_AFTER(head, tqelm, elm, field) do { \ | ||
200 | if ((STAILQ_NEXT((elm), field) = STAILQ_NEXT((tqelm), field)) == NULL)\ | ||
201 | (head)->stqh_last = &STAILQ_NEXT((elm), field); \ | ||
202 | STAILQ_NEXT((tqelm), field) = (elm); \ | ||
203 | } while (0) | ||
204 | |||
205 | #define STAILQ_INSERT_HEAD(head, elm, field) do { \ | ||
206 | if ((STAILQ_NEXT((elm), field) = STAILQ_FIRST((head))) == NULL) \ | ||
207 | (head)->stqh_last = &STAILQ_NEXT((elm), field); \ | ||
208 | STAILQ_FIRST((head)) = (elm); \ | ||
209 | } while (0) | ||
210 | |||
211 | #define STAILQ_INSERT_TAIL(head, elm, field) do { \ | ||
212 | STAILQ_NEXT((elm), field) = NULL; \ | ||
213 | STAILQ_LAST((head)) = (elm); \ | ||
214 | (head)->stqh_last = &STAILQ_NEXT((elm), field); \ | ||
215 | } while (0) | ||
216 | |||
217 | #define STAILQ_LAST(head) (*(head)->stqh_last) | ||
218 | |||
219 | #define STAILQ_NEXT(elm, field) ((elm)->field.stqe_next) | ||
220 | |||
221 | #define STAILQ_REMOVE(head, elm, type, field) do { \ | ||
222 | if (STAILQ_FIRST((head)) == (elm)) { \ | ||
223 | STAILQ_REMOVE_HEAD(head, field); \ | ||
224 | } \ | ||
225 | else { \ | ||
226 | struct type *curelm = STAILQ_FIRST((head)); \ | ||
227 | while (STAILQ_NEXT(curelm, field) != (elm)) \ | ||
228 | curelm = STAILQ_NEXT(curelm, field); \ | ||
229 | if ((STAILQ_NEXT(curelm, field) = \ | ||
230 | STAILQ_NEXT(STAILQ_NEXT(curelm, field), field)) == NULL)\ | ||
231 | (head)->stqh_last = &STAILQ_NEXT((curelm), field);\ | ||
232 | } \ | ||
233 | } while (0) | ||
234 | |||
235 | #define STAILQ_REMOVE_HEAD(head, field) do { \ | ||
236 | if ((STAILQ_FIRST((head)) = \ | ||
237 | STAILQ_NEXT(STAILQ_FIRST((head)), field)) == NULL) \ | ||
238 | (head)->stqh_last = &STAILQ_FIRST((head)); \ | ||
239 | } while (0) | ||
240 | |||
241 | #define STAILQ_REMOVE_HEAD_UNTIL(head, elm, field) do { \ | ||
242 | if ((STAILQ_FIRST((head)) = STAILQ_NEXT((elm), field)) == NULL) \ | ||
243 | (head)->stqh_last = &STAILQ_FIRST((head)); \ | ||
244 | } while (0) | ||
245 | |||
246 | /* | ||
247 | * List declarations. | ||
248 | */ | ||
249 | #define LIST_HEAD(name, type) \ | ||
250 | struct name { \ | ||
251 | struct type *lh_first; /* first element */ \ | ||
252 | } | ||
253 | |||
254 | #define LIST_HEAD_INITIALIZER(head) \ | ||
255 | { NULL } | ||
256 | |||
257 | #define LIST_ENTRY(type) \ | ||
258 | struct { \ | ||
259 | struct type *le_next; /* next element */ \ | ||
260 | struct type **le_prev; /* address of previous next element */ \ | ||
261 | } | ||
262 | |||
263 | /* | ||
264 | * List functions. | ||
265 | */ | ||
266 | |||
267 | #define LIST_EMPTY(head) ((head)->lh_first == NULL) | ||
268 | |||
269 | #define LIST_FIRST(head) ((head)->lh_first) | ||
270 | |||
271 | #define LIST_FOREACH(var, head, field) \ | ||
272 | for ((var) = LIST_FIRST((head)); \ | ||
273 | (var); \ | ||
274 | (var) = LIST_NEXT((var), field)) | ||
275 | |||
276 | #define LIST_INIT(head) do { \ | ||
277 | LIST_FIRST((head)) = NULL; \ | ||
278 | } while (0) | ||
279 | |||
280 | #define LIST_INSERT_AFTER(listelm, elm, field) do { \ | ||
281 | if ((LIST_NEXT((elm), field) = LIST_NEXT((listelm), field)) != NULL)\ | ||
282 | LIST_NEXT((listelm), field)->field.le_prev = \ | ||
283 | &LIST_NEXT((elm), field); \ | ||
284 | LIST_NEXT((listelm), field) = (elm); \ | ||
285 | (elm)->field.le_prev = &LIST_NEXT((listelm), field); \ | ||
286 | } while (0) | ||
287 | |||
288 | #define LIST_INSERT_BEFORE(listelm, elm, field) do { \ | ||
289 | (elm)->field.le_prev = (listelm)->field.le_prev; \ | ||
290 | LIST_NEXT((elm), field) = (listelm); \ | ||
291 | *(listelm)->field.le_prev = (elm); \ | ||
292 | (listelm)->field.le_prev = &LIST_NEXT((elm), field); \ | ||
293 | } while (0) | ||
294 | |||
295 | #define LIST_INSERT_HEAD(head, elm, field) do { \ | ||
296 | if ((LIST_NEXT((elm), field) = LIST_FIRST((head))) != NULL) \ | ||
297 | LIST_FIRST((head))->field.le_prev = &LIST_NEXT((elm), field);\ | ||
298 | LIST_FIRST((head)) = (elm); \ | ||
299 | (elm)->field.le_prev = &LIST_FIRST((head)); \ | ||
300 | } while (0) | ||
301 | |||
302 | #define LIST_NEXT(elm, field) ((elm)->field.le_next) | ||
303 | |||
304 | #define LIST_REMOVE(elm, field) do { \ | ||
305 | if (LIST_NEXT((elm), field) != NULL) \ | ||
306 | LIST_NEXT((elm), field)->field.le_prev = \ | ||
307 | (elm)->field.le_prev; \ | ||
308 | *(elm)->field.le_prev = LIST_NEXT((elm), field); \ | ||
309 | } while (0) | ||
310 | |||
311 | /* | ||
312 | * Tail queue declarations. | ||
313 | */ | ||
314 | #define TAILQ_HEAD(name, type) \ | ||
315 | struct name { \ | ||
316 | struct type *tqh_first; /* first element */ \ | ||
317 | struct type **tqh_last; /* addr of last next element */ \ | ||
318 | } | ||
319 | |||
320 | #define TAILQ_HEAD_INITIALIZER(head) \ | ||
321 | { NULL, &(head).tqh_first } | ||
322 | |||
323 | #define TAILQ_ENTRY(type) \ | ||
324 | struct { \ | ||
325 | struct type *tqe_next; /* next element */ \ | ||
326 | struct type **tqe_prev; /* address of previous next element */ \ | ||
327 | } | ||
328 | |||
329 | /* | ||
330 | * Tail queue functions. | ||
331 | */ | ||
332 | #define TAILQ_EMPTY(head) ((head)->tqh_first == NULL) | ||
333 | |||
334 | #define TAILQ_FIRST(head) ((head)->tqh_first) | ||
335 | |||
336 | #define TAILQ_FOREACH(var, head, field) \ | ||
337 | for ((var) = TAILQ_FIRST((head)); \ | ||
338 | (var); \ | ||
339 | (var) = TAILQ_NEXT((var), field)) | ||
340 | |||
341 | #define TAILQ_FOREACH_REVERSE(var, head, headname, field) \ | ||
342 | for ((var) = TAILQ_LAST((head), headname); \ | ||
343 | (var); \ | ||
344 | (var) = TAILQ_PREV((var), headname, field)) | ||
345 | |||
346 | #define TAILQ_INIT(head) do { \ | ||
347 | TAILQ_FIRST((head)) = NULL; \ | ||
348 | (head)->tqh_last = &TAILQ_FIRST((head)); \ | ||
349 | } while (0) | ||
350 | |||
351 | #define TAILQ_INSERT_AFTER(head, listelm, elm, field) do { \ | ||
352 | if ((TAILQ_NEXT((elm), field) = TAILQ_NEXT((listelm), field)) != NULL)\ | ||
353 | TAILQ_NEXT((elm), field)->field.tqe_prev = \ | ||
354 | &TAILQ_NEXT((elm), field); \ | ||
355 | else \ | ||
356 | (head)->tqh_last = &TAILQ_NEXT((elm), field); \ | ||
357 | TAILQ_NEXT((listelm), field) = (elm); \ | ||
358 | (elm)->field.tqe_prev = &TAILQ_NEXT((listelm), field); \ | ||
359 | } while (0) | ||
360 | |||
361 | #define TAILQ_INSERT_BEFORE(listelm, elm, field) do { \ | ||
362 | (elm)->field.tqe_prev = (listelm)->field.tqe_prev; \ | ||
363 | TAILQ_NEXT((elm), field) = (listelm); \ | ||
364 | *(listelm)->field.tqe_prev = (elm); \ | ||
365 | (listelm)->field.tqe_prev = &TAILQ_NEXT((elm), field); \ | ||
366 | } while (0) | ||
367 | |||
368 | #define TAILQ_INSERT_HEAD(head, elm, field) do { \ | ||
369 | if ((TAILQ_NEXT((elm), field) = TAILQ_FIRST((head))) != NULL) \ | ||
370 | TAILQ_FIRST((head))->field.tqe_prev = \ | ||
371 | &TAILQ_NEXT((elm), field); \ | ||
372 | else \ | ||
373 | (head)->tqh_last = &TAILQ_NEXT((elm), field); \ | ||
374 | TAILQ_FIRST((head)) = (elm); \ | ||
375 | (elm)->field.tqe_prev = &TAILQ_FIRST((head)); \ | ||
376 | } while (0) | ||
377 | |||
378 | #define TAILQ_INSERT_TAIL(head, elm, field) do { \ | ||
379 | TAILQ_NEXT((elm), field) = NULL; \ | ||
380 | (elm)->field.tqe_prev = (head)->tqh_last; \ | ||
381 | *(head)->tqh_last = (elm); \ | ||
382 | (head)->tqh_last = &TAILQ_NEXT((elm), field); \ | ||
383 | } while (0) | ||
384 | |||
385 | #define TAILQ_LAST(head, headname) \ | ||
386 | (*(((struct headname *)((head)->tqh_last))->tqh_last)) | ||
387 | |||
388 | #define TAILQ_NEXT(elm, field) ((elm)->field.tqe_next) | ||
389 | |||
390 | #define TAILQ_PREV(elm, headname, field) \ | ||
391 | (*(((struct headname *)((elm)->field.tqe_prev))->tqh_last)) | ||
392 | |||
393 | #define TAILQ_REMOVE(head, elm, field) do { \ | ||
394 | if ((TAILQ_NEXT((elm), field)) != NULL) \ | ||
395 | TAILQ_NEXT((elm), field)->field.tqe_prev = \ | ||
396 | (elm)->field.tqe_prev; \ | ||
397 | else \ | ||
398 | (head)->tqh_last = (elm)->field.tqe_prev; \ | ||
399 | *(elm)->field.tqe_prev = TAILQ_NEXT((elm), field); \ | ||
400 | } while (0) | ||
401 | |||
402 | /* | ||
403 | * Circular queue declarations. | ||
404 | */ | ||
405 | #define CIRCLEQ_HEAD(name, type) \ | ||
406 | struct name { \ | ||
407 | struct type *cqh_first; /* first element */ \ | ||
408 | struct type *cqh_last; /* last element */ \ | ||
409 | } | ||
410 | |||
411 | #define CIRCLEQ_HEAD_INITIALIZER(head) \ | ||
412 | { (void *)&(head), (void *)&(head) } | ||
413 | |||
414 | #define CIRCLEQ_ENTRY(type) \ | ||
415 | struct { \ | ||
416 | struct type *cqe_next; /* next element */ \ | ||
417 | struct type *cqe_prev; /* previous element */ \ | ||
418 | } | ||
419 | |||
420 | /* | ||
421 | * Circular queue functions. | ||
422 | */ | ||
423 | #define CIRCLEQ_EMPTY(head) ((head)->cqh_first == (void *)(head)) | ||
424 | |||
425 | #define CIRCLEQ_FIRST(head) ((head)->cqh_first) | ||
426 | |||
427 | #define CIRCLEQ_FOREACH(var, head, field) \ | ||
428 | for ((var) = CIRCLEQ_FIRST((head)); \ | ||
429 | (var) != (void *)(head); \ | ||
430 | (var) = CIRCLEQ_NEXT((var), field)) | ||
431 | |||
432 | #define CIRCLEQ_FOREACH_REVERSE(var, head, field) \ | ||
433 | for ((var) = CIRCLEQ_LAST((head)); \ | ||
434 | (var) != (void *)(head); \ | ||
435 | (var) = CIRCLEQ_PREV((var), field)) | ||
436 | |||
437 | #define CIRCLEQ_INIT(head) do { \ | ||
438 | CIRCLEQ_FIRST((head)) = (void *)(head); \ | ||
439 | CIRCLEQ_LAST((head)) = (void *)(head); \ | ||
440 | } while (0) | ||
441 | |||
442 | #define CIRCLEQ_INSERT_AFTER(head, listelm, elm, field) do { \ | ||
443 | CIRCLEQ_NEXT((elm), field) = CIRCLEQ_NEXT((listelm), field); \ | ||
444 | CIRCLEQ_PREV((elm), field) = (listelm); \ | ||
445 | if (CIRCLEQ_NEXT((listelm), field) == (void *)(head)) \ | ||
446 | CIRCLEQ_LAST((head)) = (elm); \ | ||
447 | else \ | ||
448 | CIRCLEQ_PREV(CIRCLEQ_NEXT((listelm), field), field) = (elm);\ | ||
449 | CIRCLEQ_NEXT((listelm), field) = (elm); \ | ||
450 | } while (0) | ||
451 | |||
452 | #define CIRCLEQ_INSERT_BEFORE(head, listelm, elm, field) do { \ | ||
453 | CIRCLEQ_NEXT((elm), field) = (listelm); \ | ||
454 | CIRCLEQ_PREV((elm), field) = CIRCLEQ_PREV((listelm), field); \ | ||
455 | if (CIRCLEQ_PREV((listelm), field) == (void *)(head)) \ | ||
456 | CIRCLEQ_FIRST((head)) = (elm); \ | ||
457 | else \ | ||
458 | CIRCLEQ_NEXT(CIRCLEQ_PREV((listelm), field), field) = (elm);\ | ||
459 | CIRCLEQ_PREV((listelm), field) = (elm); \ | ||
460 | } while (0) | ||
461 | |||
462 | #define CIRCLEQ_INSERT_HEAD(head, elm, field) do { \ | ||
463 | CIRCLEQ_NEXT((elm), field) = CIRCLEQ_FIRST((head)); \ | ||
464 | CIRCLEQ_PREV((elm), field) = (void *)(head); \ | ||
465 | if (CIRCLEQ_LAST((head)) == (void *)(head)) \ | ||
466 | CIRCLEQ_LAST((head)) = (elm); \ | ||
467 | else \ | ||
468 | CIRCLEQ_PREV(CIRCLEQ_FIRST((head)), field) = (elm); \ | ||
469 | CIRCLEQ_FIRST((head)) = (elm); \ | ||
470 | } while (0) | ||
471 | |||
472 | #define CIRCLEQ_INSERT_TAIL(head, elm, field) do { \ | ||
473 | CIRCLEQ_NEXT((elm), field) = (void *)(head); \ | ||
474 | CIRCLEQ_PREV((elm), field) = CIRCLEQ_LAST((head)); \ | ||
475 | if (CIRCLEQ_FIRST((head)) == (void *)(head)) \ | ||
476 | CIRCLEQ_FIRST((head)) = (elm); \ | ||
477 | else \ | ||
478 | CIRCLEQ_NEXT(CIRCLEQ_LAST((head)), field) = (elm); \ | ||
479 | CIRCLEQ_LAST((head)) = (elm); \ | ||
480 | } while (0) | ||
481 | |||
482 | #define CIRCLEQ_LAST(head) ((head)->cqh_last) | ||
483 | |||
484 | #define CIRCLEQ_NEXT(elm,field) ((elm)->field.cqe_next) | ||
485 | |||
486 | #define CIRCLEQ_PREV(elm,field) ((elm)->field.cqe_prev) | ||
487 | |||
488 | #define CIRCLEQ_REMOVE(head, elm, field) do { \ | ||
489 | if (CIRCLEQ_NEXT((elm), field) == (void *)(head)) \ | ||
490 | CIRCLEQ_LAST((head)) = CIRCLEQ_PREV((elm), field); \ | ||
491 | else \ | ||
492 | CIRCLEQ_PREV(CIRCLEQ_NEXT((elm), field), field) = \ | ||
493 | CIRCLEQ_PREV((elm), field); \ | ||
494 | if (CIRCLEQ_PREV((elm), field) == (void *)(head)) \ | ||
495 | CIRCLEQ_FIRST((head)) = CIRCLEQ_NEXT((elm), field); \ | ||
496 | else \ | ||
497 | CIRCLEQ_NEXT(CIRCLEQ_PREV((elm), field), field) = \ | ||
498 | CIRCLEQ_NEXT((elm), field); \ | ||
499 | } while (0) | ||
500 | |||
501 | #endif /* !_SYS_QUEUE_H_ */ | ||