]> Zhao Yanbai Git Server - minix.git/commitdiff
Move queue.h to include/sys so that it can be used elsewhere. Pull in
authorArun Thomas <arun@minix3.org>
Wed, 22 Apr 2009 20:02:39 +0000 (20:02 +0000)
committerArun Thomas <arun@minix3.org>
Wed, 22 Apr 2009 20:02:39 +0000 (20:02 +0000)
FreeBSD's r179210 queue.h.

include/sys/queue.h [new file with mode: 0644]
servers/mfs/inode.h
servers/mfs/queue.h [deleted file]

diff --git a/include/sys/queue.h b/include/sys/queue.h
new file mode 100644 (file)
index 0000000..6757e2e
--- /dev/null
@@ -0,0 +1,632 @@
+/*-
+ * Copyright (c) 1991, 1993
+ *     The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *     @(#)queue.h     8.5 (Berkeley) 8/20/94
+ * $FreeBSD$
+ */
+
+#ifndef _SYS_QUEUE_H_
+#define        _SYS_QUEUE_H_
+
+/* Minix doesn't have this file.
+#include <sys/cdefs.h>
+*/
+
+/* Minix does needs this declaration from sys/cdefs.h though. */
+#define __offsetof(type, field) ((size_t)(&((type *)0)->field))
+
+/*
+ * This file defines four types of data structures: singly-linked lists,
+ * singly-linked tail queues, lists and tail queues.
+ *
+ * A singly-linked list is headed by a single forward pointer. The elements
+ * are singly linked for minimum space and pointer manipulation overhead at
+ * the expense of O(n) removal for arbitrary elements. New elements can be
+ * added to the list after an existing element or at the head of the list.
+ * Elements being removed from the head of the list should use the explicit
+ * macro for this purpose for optimum efficiency. A singly-linked list may
+ * only be traversed in the forward direction.  Singly-linked lists are ideal
+ * for applications with large datasets and few or no removals or for
+ * implementing a LIFO queue.
+ *
+ * A singly-linked tail queue is headed by a pair of pointers, one to the
+ * head of the list and the other to the tail of the list. The elements are
+ * singly linked for minimum space and pointer manipulation overhead at the
+ * expense of O(n) removal for arbitrary elements. New elements can be added
+ * to the list after an existing element, at the head of the list, or at the
+ * end of the list. Elements being removed from the head of the tail queue
+ * should use the explicit macro for this purpose for optimum efficiency.
+ * A singly-linked tail queue may only be traversed in the forward direction.
+ * Singly-linked tail queues are ideal for applications with large datasets
+ * and few or no removals or for implementing a FIFO queue.
+ *
+ * A list is headed by a single forward pointer (or an array of forward
+ * pointers for a hash table header). The elements are doubly linked
+ * so that an arbitrary element can be removed without a need to
+ * traverse the list. New elements can be added to the list before
+ * or after an existing element or at the head of the list. A list
+ * may only be traversed in the forward direction.
+ *
+ * A tail queue is headed by a pair of pointers, one to the head of the
+ * list and the other to the tail of the list. The elements are doubly
+ * linked so that an arbitrary element can be removed without a need to
+ * traverse the list. New elements can be added to the list before or
+ * after an existing element, at the head of the list, or at the end of
+ * the list. A tail queue may be traversed in either direction.
+ *
+ * For details on the use of these macros, see the queue(3) manual page.
+ *
+ *
+ *                             SLIST   LIST    STAILQ  TAILQ
+ * _HEAD                       +       +       +       +
+ * _HEAD_INITIALIZER           +       +       +       +
+ * _ENTRY                      +       +       +       +
+ * _INIT                       +       +       +       +
+ * _EMPTY                      +       +       +       +
+ * _FIRST                      +       +       +       +
+ * _NEXT                       +       +       +       +
+ * _PREV                       -       -       -       +
+ * _LAST                       -       -       +       +
+ * _FOREACH                    +       +       +       +
+ * _FOREACH_SAFE               +       +       +       +
+ * _FOREACH_REVERSE            -       -       -       +
+ * _FOREACH_REVERSE_SAFE       -       -       -       +
+ * _INSERT_HEAD                        +       +       +       +
+ * _INSERT_BEFORE              -       +       -       +
+ * _INSERT_AFTER               +       +       +       +
+ * _INSERT_TAIL                        -       -       +       +
+ * _CONCAT                     -       -       +       +
+ * _REMOVE_HEAD                        +       -       +       -
+ * _REMOVE_NEXT                        +       -       +       -
+ * _REMOVE                     +       +       +       +
+ *
+ */
+#ifdef QUEUE_MACRO_DEBUG
+/* Store the last 2 places the queue element or head was altered */
+struct qm_trace {
+       char * lastfile;
+       int lastline;
+       char * prevfile;
+       int prevline;
+};
+
+#define        TRACEBUF        struct qm_trace trace;
+#define        TRASHIT(x)      do {(x) = (void *)-1;} while (0)
+
+#define        QMD_TRACE_HEAD(head) do {                                       \
+       (head)->trace.prevline = (head)->trace.lastline;                \
+       (head)->trace.prevfile = (head)->trace.lastfile;                \
+       (head)->trace.lastline = __LINE__;                              \
+       (head)->trace.lastfile = __FILE__;                              \
+} while (0)
+
+#define        QMD_TRACE_ELEM(elem) do {                                       \
+       (elem)->trace.prevline = (elem)->trace.lastline;                \
+       (elem)->trace.prevfile = (elem)->trace.lastfile;                \
+       (elem)->trace.lastline = __LINE__;                              \
+       (elem)->trace.lastfile = __FILE__;                              \
+} while (0)
+
+#else
+#define        QMD_TRACE_ELEM(elem)
+#define        QMD_TRACE_HEAD(head)
+#define        TRACEBUF
+#define        TRASHIT(x)
+#endif /* QUEUE_MACRO_DEBUG */
+
+/*
+ * Singly-linked List declarations.
+ */
+#define        SLIST_HEAD(name, type)                                          \
+struct name {                                                          \
+       struct type *slh_first; /* first element */                     \
+}
+
+#define        SLIST_HEAD_INITIALIZER(head)                                    \
+       { NULL }
+
+#define        SLIST_ENTRY(type)                                               \
+struct {                                                               \
+       struct type *sle_next;  /* next element */                      \
+}
+
+/*
+ * Singly-linked List functions.
+ */
+#define        SLIST_EMPTY(head)       ((head)->slh_first == NULL)
+
+#define        SLIST_FIRST(head)       ((head)->slh_first)
+
+#define        SLIST_FOREACH(var, head, field)                                 \
+       for ((var) = SLIST_FIRST((head));                               \
+           (var);                                                      \
+           (var) = SLIST_NEXT((var), field))
+
+#define        SLIST_FOREACH_SAFE(var, head, field, tvar)                      \
+       for ((var) = SLIST_FIRST((head));                               \
+           (var) && ((tvar) = SLIST_NEXT((var), field), 1);            \
+           (var) = (tvar))
+
+#define        SLIST_FOREACH_PREVPTR(var, varp, head, field)                   \
+       for ((varp) = &SLIST_FIRST((head));                             \
+           ((var) = *(varp)) != NULL;                                  \
+           (varp) = &SLIST_NEXT((var), field))
+
+#define        SLIST_INIT(head) do {                                           \
+       SLIST_FIRST((head)) = NULL;                                     \
+} while (0)
+
+#define        SLIST_INSERT_AFTER(slistelm, elm, field) do {                   \
+       SLIST_NEXT((elm), field) = SLIST_NEXT((slistelm), field);       \
+       SLIST_NEXT((slistelm), field) = (elm);                          \
+} while (0)
+
+#define        SLIST_INSERT_HEAD(head, elm, field) do {                        \
+       SLIST_NEXT((elm), field) = SLIST_FIRST((head));                 \
+       SLIST_FIRST((head)) = (elm);                                    \
+} while (0)
+
+#define        SLIST_NEXT(elm, field)  ((elm)->field.sle_next)
+
+#define        SLIST_REMOVE(head, elm, type, field) do {                       \
+       if (SLIST_FIRST((head)) == (elm)) {                             \
+               SLIST_REMOVE_HEAD((head), field);                       \
+       }                                                               \
+       else {                                                          \
+               struct type *curelm = SLIST_FIRST((head));              \
+               while (SLIST_NEXT(curelm, field) != (elm))              \
+                       curelm = SLIST_NEXT(curelm, field);             \
+               SLIST_REMOVE_NEXT(head, curelm, field);                 \
+       }                                                               \
+       TRASHIT((elm)->field.sle_next);                                 \
+} while (0)
+
+#define SLIST_REMOVE_NEXT(head, elm, field) do {                               \
+       SLIST_NEXT(elm, field) =                                        \
+           SLIST_NEXT(SLIST_NEXT(elm, field), field);                  \
+} while (0)
+
+#define        SLIST_REMOVE_HEAD(head, field) do {                             \
+       SLIST_FIRST((head)) = SLIST_NEXT(SLIST_FIRST((head)), field);   \
+} while (0)
+
+/*
+ * Singly-linked Tail queue declarations.
+ */
+#define        STAILQ_HEAD(name, type)                                         \
+struct name {                                                          \
+       struct type *stqh_first;/* first element */                     \
+       struct type **stqh_last;/* addr of last next element */         \
+}
+
+#define        STAILQ_HEAD_INITIALIZER(head)                                   \
+       { NULL, &(head).stqh_first }
+
+#define        STAILQ_ENTRY(type)                                              \
+struct {                                                               \
+       struct type *stqe_next; /* next element */                      \
+}
+
+/*
+ * Singly-linked Tail queue functions.
+ */
+#define        STAILQ_CONCAT(head1, head2) do {                                \
+       if (!STAILQ_EMPTY((head2))) {                                   \
+               *(head1)->stqh_last = (head2)->stqh_first;              \
+               (head1)->stqh_last = (head2)->stqh_last;                \
+               STAILQ_INIT((head2));                                   \
+       }                                                               \
+} while (0)
+
+#define        STAILQ_EMPTY(head)      ((head)->stqh_first == NULL)
+
+#define        STAILQ_FIRST(head)      ((head)->stqh_first)
+
+#define        STAILQ_FOREACH(var, head, field)                                \
+       for((var) = STAILQ_FIRST((head));                               \
+          (var);                                                       \
+          (var) = STAILQ_NEXT((var), field))
+
+
+#define        STAILQ_FOREACH_SAFE(var, head, field, tvar)                     \
+       for ((var) = STAILQ_FIRST((head));                              \
+           (var) && ((tvar) = STAILQ_NEXT((var), field), 1);           \
+           (var) = (tvar))
+
+#define        STAILQ_INIT(head) do {                                          \
+       STAILQ_FIRST((head)) = NULL;                                    \
+       (head)->stqh_last = &STAILQ_FIRST((head));                      \
+} while (0)
+
+#define        STAILQ_INSERT_AFTER(head, tqelm, elm, field) do {               \
+       if ((STAILQ_NEXT((elm), field) = STAILQ_NEXT((tqelm), field)) == NULL)\
+               (head)->stqh_last = &STAILQ_NEXT((elm), field);         \
+       STAILQ_NEXT((tqelm), field) = (elm);                            \
+} while (0)
+
+#define        STAILQ_INSERT_HEAD(head, elm, field) do {                       \
+       if ((STAILQ_NEXT((elm), field) = STAILQ_FIRST((head))) == NULL) \
+               (head)->stqh_last = &STAILQ_NEXT((elm), field);         \
+       STAILQ_FIRST((head)) = (elm);                                   \
+} while (0)
+
+#define        STAILQ_INSERT_TAIL(head, elm, field) do {                       \
+       STAILQ_NEXT((elm), field) = NULL;                               \
+       *(head)->stqh_last = (elm);                                     \
+       (head)->stqh_last = &STAILQ_NEXT((elm), field);                 \
+} while (0)
+
+#define        STAILQ_LAST(head, type, field)                                  \
+       (STAILQ_EMPTY((head)) ?                                         \
+               NULL :                                                  \
+               ((struct type *)(void *)                                \
+               ((char *)((head)->stqh_last) - __offsetof(struct type, field))))
+
+#define        STAILQ_NEXT(elm, field) ((elm)->field.stqe_next)
+
+#define        STAILQ_REMOVE(head, elm, type, field) do {                      \
+       if (STAILQ_FIRST((head)) == (elm)) {                            \
+               STAILQ_REMOVE_HEAD((head), field);                      \
+       }                                                               \
+       else {                                                          \
+               struct type *curelm = STAILQ_FIRST((head));             \
+               while (STAILQ_NEXT(curelm, field) != (elm))             \
+                       curelm = STAILQ_NEXT(curelm, field);            \
+               STAILQ_REMOVE_NEXT(head, curelm, field);                \
+       }                                                               \
+       TRASHIT((elm)->field.stqe_next);                                \
+} while (0)
+
+#define        STAILQ_REMOVE_HEAD(head, field) do {                            \
+       if ((STAILQ_FIRST((head)) =                                     \
+            STAILQ_NEXT(STAILQ_FIRST((head)), field)) == NULL)         \
+               (head)->stqh_last = &STAILQ_FIRST((head));              \
+} while (0)
+
+#define STAILQ_REMOVE_NEXT(head, elm, field) do {                      \
+       if ((STAILQ_NEXT(elm, field) =                                  \
+            STAILQ_NEXT(STAILQ_NEXT(elm, field), field)) == NULL)      \
+               (head)->stqh_last = &STAILQ_NEXT((elm), field);         \
+} while (0)
+
+/*
+ * List declarations.
+ */
+#define        LIST_HEAD(name, type)                                           \
+struct name {                                                          \
+       struct type *lh_first;  /* first element */                     \
+}
+
+#define        LIST_HEAD_INITIALIZER(head)                                     \
+       { NULL }
+
+#define        LIST_ENTRY(type)                                                \
+struct {                                                               \
+       struct type *le_next;   /* next element */                      \
+       struct type **le_prev;  /* address of previous next element */  \
+}
+
+/*
+ * List functions.
+ */
+
+#if (defined(_KERNEL) && defined(INVARIANTS))
+#define        QMD_LIST_CHECK_HEAD(head, field) do {                           \
+       if (LIST_FIRST((head)) != NULL &&                               \
+           LIST_FIRST((head))->field.le_prev !=                        \
+            &LIST_FIRST((head)))                                       \
+               panic("Bad list head %p first->prev != head", (head));  \
+} while (0)
+
+#define        QMD_LIST_CHECK_NEXT(elm, field) do {                            \
+       if (LIST_NEXT((elm), field) != NULL &&                          \
+           LIST_NEXT((elm), field)->field.le_prev !=                   \
+            &((elm)->field.le_next))                                   \
+               panic("Bad link elm %p next->prev != elm", (elm));      \
+} while (0)
+
+#define        QMD_LIST_CHECK_PREV(elm, field) do {                            \
+       if (*(elm)->field.le_prev != (elm))                             \
+               panic("Bad link elm %p prev->next != elm", (elm));      \
+} while (0)
+#else
+#define        QMD_LIST_CHECK_HEAD(head, field)
+#define        QMD_LIST_CHECK_NEXT(elm, field)
+#define        QMD_LIST_CHECK_PREV(elm, field)
+#endif /* (_KERNEL && INVARIANTS) */
+
+#define        LIST_EMPTY(head)        ((head)->lh_first == NULL)
+
+#define        LIST_FIRST(head)        ((head)->lh_first)
+
+#define        LIST_FOREACH(var, head, field)                                  \
+       for ((var) = LIST_FIRST((head));                                \
+           (var);                                                      \
+           (var) = LIST_NEXT((var), field))
+
+#define        LIST_FOREACH_SAFE(var, head, field, tvar)                       \
+       for ((var) = LIST_FIRST((head));                                \
+           (var) && ((tvar) = LIST_NEXT((var), field), 1);             \
+           (var) = (tvar))
+
+#define        LIST_INIT(head) do {                                            \
+       LIST_FIRST((head)) = NULL;                                      \
+} while (0)
+
+#define        LIST_INSERT_AFTER(listelm, elm, field) do {                     \
+       QMD_LIST_CHECK_NEXT(listelm, field);                            \
+       if ((LIST_NEXT((elm), field) = LIST_NEXT((listelm), field)) != NULL)\
+               LIST_NEXT((listelm), field)->field.le_prev =            \
+                   &LIST_NEXT((elm), field);                           \
+       LIST_NEXT((listelm), field) = (elm);                            \
+       (elm)->field.le_prev = &LIST_NEXT((listelm), field);            \
+} while (0)
+
+#define        LIST_INSERT_BEFORE(listelm, elm, field) do {                    \
+       QMD_LIST_CHECK_PREV(listelm, field);                            \
+       (elm)->field.le_prev = (listelm)->field.le_prev;                \
+       LIST_NEXT((elm), field) = (listelm);                            \
+       *(listelm)->field.le_prev = (elm);                              \
+       (listelm)->field.le_prev = &LIST_NEXT((elm), field);            \
+} while (0)
+
+#define        LIST_INSERT_HEAD(head, elm, field) do {                         \
+       QMD_LIST_CHECK_HEAD((head), field);                             \
+       if ((LIST_NEXT((elm), field) = LIST_FIRST((head))) != NULL)     \
+               LIST_FIRST((head))->field.le_prev = &LIST_NEXT((elm), field);\
+       LIST_FIRST((head)) = (elm);                                     \
+       (elm)->field.le_prev = &LIST_FIRST((head));                     \
+} while (0)
+
+#define        LIST_NEXT(elm, field)   ((elm)->field.le_next)
+
+#define        LIST_REMOVE(elm, field) do {                                    \
+       QMD_LIST_CHECK_NEXT(elm, field);                                \
+       QMD_LIST_CHECK_PREV(elm, field);                                \
+       if (LIST_NEXT((elm), field) != NULL)                            \
+               LIST_NEXT((elm), field)->field.le_prev =                \
+                   (elm)->field.le_prev;                               \
+       *(elm)->field.le_prev = LIST_NEXT((elm), field);                \
+       TRASHIT((elm)->field.le_next);                                  \
+       TRASHIT((elm)->field.le_prev);                                  \
+} while (0)
+
+/*
+ * Tail queue declarations.
+ */
+#define        TAILQ_HEAD(name, type)                                          \
+struct name {                                                          \
+       struct type *tqh_first; /* first element */                     \
+       struct type **tqh_last; /* addr of last next element */         \
+       TRACEBUF                                                        \
+}
+
+#define        TAILQ_HEAD_INITIALIZER(head)                                    \
+       { NULL, &(head).tqh_first }
+
+#define        TAILQ_ENTRY(type)                                               \
+struct {                                                               \
+       struct type *tqe_next;  /* next element */                      \
+       struct type **tqe_prev; /* address of previous next element */  \
+       TRACEBUF                                                        \
+}
+
+/*
+ * Tail queue functions.
+ */
+#if (defined(_KERNEL) && defined(INVARIANTS))
+#define        QMD_TAILQ_CHECK_HEAD(head, field) do {                          \
+       if (!TAILQ_EMPTY(head) &&                                       \
+           TAILQ_FIRST((head))->field.tqe_prev !=                      \
+            &TAILQ_FIRST((head)))                                      \
+               panic("Bad tailq head %p first->prev != head", (head)); \
+} while (0)
+
+#define        QMD_TAILQ_CHECK_TAIL(head, field) do {                          \
+       if (*(head)->tqh_last != NULL)                                  \
+               panic("Bad tailq NEXT(%p->tqh_last) != NULL", (head));  \
+} while (0)
+
+#define        QMD_TAILQ_CHECK_NEXT(elm, field) do {                           \
+       if (TAILQ_NEXT((elm), field) != NULL &&                         \
+           TAILQ_NEXT((elm), field)->field.tqe_prev !=                 \
+            &((elm)->field.tqe_next))                                  \
+               panic("Bad link elm %p next->prev != elm", (elm));      \
+} while (0)
+
+#define        QMD_TAILQ_CHECK_PREV(elm, field) do {                           \
+       if (*(elm)->field.tqe_prev != (elm))                            \
+               panic("Bad link elm %p prev->next != elm", (elm));      \
+} while (0)
+#else
+#define        QMD_TAILQ_CHECK_HEAD(head, field)
+#define        QMD_TAILQ_CHECK_TAIL(head, headname)
+#define        QMD_TAILQ_CHECK_NEXT(elm, field)
+#define        QMD_TAILQ_CHECK_PREV(elm, field)
+#endif /* (_KERNEL && INVARIANTS) */
+
+#define        TAILQ_CONCAT(head1, head2, field) do {                          \
+       if (!TAILQ_EMPTY(head2)) {                                      \
+               *(head1)->tqh_last = (head2)->tqh_first;                \
+               (head2)->tqh_first->field.tqe_prev = (head1)->tqh_last; \
+               (head1)->tqh_last = (head2)->tqh_last;                  \
+               TAILQ_INIT((head2));                                    \
+               QMD_TRACE_HEAD(head1);                                  \
+               QMD_TRACE_HEAD(head2);                                  \
+       }                                                               \
+} while (0)
+
+#define        TAILQ_EMPTY(head)       ((head)->tqh_first == NULL)
+
+#define        TAILQ_FIRST(head)       ((head)->tqh_first)
+
+#define        TAILQ_FOREACH(var, head, field)                                 \
+       for ((var) = TAILQ_FIRST((head));                               \
+           (var);                                                      \
+           (var) = TAILQ_NEXT((var), field))
+
+#define        TAILQ_FOREACH_SAFE(var, head, field, tvar)                      \
+       for ((var) = TAILQ_FIRST((head));                               \
+           (var) && ((tvar) = TAILQ_NEXT((var), field), 1);            \
+           (var) = (tvar))
+
+#define        TAILQ_FOREACH_REVERSE(var, head, headname, field)               \
+       for ((var) = TAILQ_LAST((head), headname);                      \
+           (var);                                                      \
+           (var) = TAILQ_PREV((var), headname, field))
+
+#define        TAILQ_FOREACH_REVERSE_SAFE(var, head, headname, field, tvar)    \
+       for ((var) = TAILQ_LAST((head), headname);                      \
+           (var) && ((tvar) = TAILQ_PREV((var), headname, field), 1);  \
+           (var) = (tvar))
+
+#define        TAILQ_INIT(head) do {                                           \
+       TAILQ_FIRST((head)) = NULL;                                     \
+       (head)->tqh_last = &TAILQ_FIRST((head));                        \
+       QMD_TRACE_HEAD(head);                                           \
+} while (0)
+
+#define        TAILQ_INSERT_AFTER(head, listelm, elm, field) do {              \
+       QMD_TAILQ_CHECK_NEXT(listelm, field);                           \
+       if ((TAILQ_NEXT((elm), field) = TAILQ_NEXT((listelm), field)) != NULL)\
+               TAILQ_NEXT((elm), field)->field.tqe_prev =              \
+                   &TAILQ_NEXT((elm), field);                          \
+       else {                                                          \
+               (head)->tqh_last = &TAILQ_NEXT((elm), field);           \
+               QMD_TRACE_HEAD(head);                                   \
+       }                                                               \
+       TAILQ_NEXT((listelm), field) = (elm);                           \
+       (elm)->field.tqe_prev = &TAILQ_NEXT((listelm), field);          \
+       QMD_TRACE_ELEM(&(elm)->field);                                  \
+       QMD_TRACE_ELEM(&listelm->field);                                \
+} while (0)
+
+#define        TAILQ_INSERT_BEFORE(listelm, elm, field) do {                   \
+       QMD_TAILQ_CHECK_PREV(listelm, field);                           \
+       (elm)->field.tqe_prev = (listelm)->field.tqe_prev;              \
+       TAILQ_NEXT((elm), field) = (listelm);                           \
+       *(listelm)->field.tqe_prev = (elm);                             \
+       (listelm)->field.tqe_prev = &TAILQ_NEXT((elm), field);          \
+       QMD_TRACE_ELEM(&(elm)->field);                                  \
+       QMD_TRACE_ELEM(&listelm->field);                                \
+} while (0)
+
+#define        TAILQ_INSERT_HEAD(head, elm, field) do {                        \
+       QMD_TAILQ_CHECK_HEAD(head, field);                              \
+       if ((TAILQ_NEXT((elm), field) = TAILQ_FIRST((head))) != NULL)   \
+               TAILQ_FIRST((head))->field.tqe_prev =                   \
+                   &TAILQ_NEXT((elm), field);                          \
+       else                                                            \
+               (head)->tqh_last = &TAILQ_NEXT((elm), field);           \
+       TAILQ_FIRST((head)) = (elm);                                    \
+       (elm)->field.tqe_prev = &TAILQ_FIRST((head));                   \
+       QMD_TRACE_HEAD(head);                                           \
+       QMD_TRACE_ELEM(&(elm)->field);                                  \
+} while (0)
+
+#define        TAILQ_INSERT_TAIL(head, elm, field) do {                        \
+       QMD_TAILQ_CHECK_TAIL(head, field);                              \
+       TAILQ_NEXT((elm), field) = NULL;                                \
+       (elm)->field.tqe_prev = (head)->tqh_last;                       \
+       *(head)->tqh_last = (elm);                                      \
+       (head)->tqh_last = &TAILQ_NEXT((elm), field);                   \
+       QMD_TRACE_HEAD(head);                                           \
+       QMD_TRACE_ELEM(&(elm)->field);                                  \
+} while (0)
+
+#define        TAILQ_LAST(head, headname)                                      \
+       (*(((struct headname *)((head)->tqh_last))->tqh_last))
+
+#define        TAILQ_NEXT(elm, field) ((elm)->field.tqe_next)
+
+#define        TAILQ_PREV(elm, headname, field)                                \
+       (*(((struct headname *)((elm)->field.tqe_prev))->tqh_last))
+
+#define        TAILQ_REMOVE(head, elm, field) do {                             \
+       QMD_TAILQ_CHECK_NEXT(elm, field);                               \
+       QMD_TAILQ_CHECK_PREV(elm, field);                               \
+       if ((TAILQ_NEXT((elm), field)) != NULL)                         \
+               TAILQ_NEXT((elm), field)->field.tqe_prev =              \
+                   (elm)->field.tqe_prev;                              \
+       else {                                                          \
+               (head)->tqh_last = (elm)->field.tqe_prev;               \
+               QMD_TRACE_HEAD(head);                                   \
+       }                                                               \
+       *(elm)->field.tqe_prev = TAILQ_NEXT((elm), field);              \
+       TRASHIT((elm)->field.tqe_next);                                 \
+       TRASHIT((elm)->field.tqe_prev);                                 \
+       QMD_TRACE_ELEM(&(elm)->field);                                  \
+} while (0)
+
+
+#ifdef _KERNEL
+
+/*
+ * XXX insque() and remque() are an old way of handling certain queues.
+ * They bogusly assumes that all queue heads look alike.
+ */
+
+struct quehead {
+       struct quehead *qh_link;
+       struct quehead *qh_rlink;
+};
+
+#ifdef __CC_SUPPORTS___INLINE
+
+static __inline void
+insque(void *a, void *b)
+{
+       struct quehead *element = (struct quehead *)a,
+                *head = (struct quehead *)b;
+
+       element->qh_link = head->qh_link;
+       element->qh_rlink = head;
+       head->qh_link = element;
+       element->qh_link->qh_rlink = element;
+}
+
+static __inline void
+remque(void *a)
+{
+       struct quehead *element = (struct quehead *)a;
+
+       element->qh_link->qh_rlink = element->qh_rlink;
+       element->qh_rlink->qh_link = element->qh_link;
+       element->qh_rlink = 0;
+}
+
+#else /* !__CC_SUPPORTS___INLINE */
+
+void   insque(void *a, void *b);
+void   remque(void *a);
+
+#endif /* __CC_SUPPORTS___INLINE */
+
+#endif /* _KERNEL */
+
+#endif /* !_SYS_QUEUE_H_ */
index 4fb80fc6db058eabc9daad6799aefad9906f0155..ba055dd770166834cfd263f4132eaa4050d058c6 100644 (file)
@@ -11,7 +11,7 @@
  * 2007-01-06: jfdsmit@gmail.com added i_zsearch
  */
 
-#include "queue.h"
+#include <sys/queue.h>
 
 EXTERN struct inode {
   mode_t i_mode;               /* file type, protection, etc. */
diff --git a/servers/mfs/queue.h b/servers/mfs/queue.h
deleted file mode 100644 (file)
index b5aef4e..0000000
+++ /dev/null
@@ -1,215 +0,0 @@
-
-#ifndef _SYS_QUEUE_H_
-#define        _SYS_QUEUE_H_
-
-#define        __offsetof(type, field) ((size_t)(&((type *)0)->field))
-#define        __rangeof(type, start, end) \
-       (__offsetof(type, end) - __offsetof(type, start))
-
-#define        QMD_TRACE_ELEM(elem)
-#define        QMD_TRACE_HEAD(head)
-#define        TRACEBUF
-#define        TRASHIT(x)
-
-/*
- * List declarations.
- */
-#define        LIST_HEAD(name, type)                                           \
-struct name {                                                          \
-       struct type *lh_first;  /* first element */                     \
-}
-
-#define        LIST_HEAD_INITIALIZER(head)                                     \
-       { NULL }
-
-#define        LIST_ENTRY(type)                                                \
-struct {                                                               \
-       struct type *le_next;   /* next element */                      \
-       struct type **le_prev;  /* address of previous next element */  \
-}
-
-/*
- * List functions.
- */
-
-#define        LIST_EMPTY(head)        ((head)->lh_first == NULL)
-
-#define        LIST_FIRST(head)        ((head)->lh_first)
-
-#define        LIST_FOREACH(var, head, field)                                  \
-       for ((var) = LIST_FIRST((head));                                \
-           (var);                                                      \
-           (var) = LIST_NEXT((var), field))
-
-#define        LIST_FOREACH_SAFE(var, head, field, tvar)                       \
-       for ((var) = LIST_FIRST((head));                                \
-           (var) && ((tvar) = LIST_NEXT((var), field), 1);             \
-           (var) = (tvar))
-
-#define        LIST_INIT(head) do {                                            \
-       LIST_FIRST((head)) = NULL;                                      \
-} while (0)
-
-#define        LIST_INSERT_AFTER(listelm, elm, field) do {                     \
-       if ((LIST_NEXT((elm), field) = LIST_NEXT((listelm), field)) != NULL)\
-               LIST_NEXT((listelm), field)->field.le_prev =            \
-                   &LIST_NEXT((elm), field);                           \
-       LIST_NEXT((listelm), field) = (elm);                            \
-       (elm)->field.le_prev = &LIST_NEXT((listelm), field);            \
-} while (0)
-
-#define        LIST_INSERT_BEFORE(listelm, elm, field) do {                    \
-       (elm)->field.le_prev = (listelm)->field.le_prev;                \
-       LIST_NEXT((elm), field) = (listelm);                            \
-       *(listelm)->field.le_prev = (elm);                              \
-       (listelm)->field.le_prev = &LIST_NEXT((elm), field);            \
-} while (0)
-
-#define        LIST_INSERT_HEAD(head, elm, field) do {                         \
-       if ((LIST_NEXT((elm), field) = LIST_FIRST((head))) != NULL)     \
-               LIST_FIRST((head))->field.le_prev = &LIST_NEXT((elm), field);\
-       LIST_FIRST((head)) = (elm);                                     \
-       (elm)->field.le_prev = &LIST_FIRST((head));                     \
-} while (0)
-
-#define        LIST_NEXT(elm, field)   ((elm)->field.le_next)
-
-#define        LIST_REMOVE(elm, field) do {                                    \
-       if (LIST_NEXT((elm), field) != NULL)                            \
-               LIST_NEXT((elm), field)->field.le_prev =                \
-                   (elm)->field.le_prev;                               \
-       *(elm)->field.le_prev = LIST_NEXT((elm), field);                \
-} while (0)
-
-/*
- * Tail queue declarations.
- */
-#define        TAILQ_HEAD(name, type)                                          \
-struct name {                                                          \
-       struct type *tqh_first; /* first element */                     \
-       struct type **tqh_last; /* addr of last next element */         \
-       TRACEBUF                                                        \
-}
-
-#define        TAILQ_HEAD_INITIALIZER(head)                                    \
-       { NULL, &(head).tqh_first }
-
-#define        TAILQ_ENTRY(type)                                               \
-struct {                                                               \
-       struct type *tqe_next;  /* next element */                      \
-       struct type **tqe_prev; /* address of previous next element */  \
-       TRACEBUF                                                        \
-}
-
-/*
- * Tail queue functions.
- */
-#define        TAILQ_CONCAT(head1, head2, field) do {                          \
-       if (!TAILQ_EMPTY(head2)) {                                      \
-               *(head1)->tqh_last = (head2)->tqh_first;                \
-               (head2)->tqh_first->field.tqe_prev = (head1)->tqh_last; \
-               (head1)->tqh_last = (head2)->tqh_last;                  \
-               TAILQ_INIT((head2));                                    \
-               QMD_TRACE_HEAD(head);                                   \
-               QMD_TRACE_HEAD(head2);                                  \
-       }                                                               \
-} while (0)
-
-#define        TAILQ_EMPTY(head)       ((head)->tqh_first == NULL)
-
-#define        TAILQ_FIRST(head)       ((head)->tqh_first)
-
-#define        TAILQ_FOREACH(var, head, field)                                 \
-       for ((var) = TAILQ_FIRST((head));                               \
-           (var);                                                      \
-           (var) = TAILQ_NEXT((var), field))
-
-#define        TAILQ_FOREACH_SAFE(var, head, field, tvar)                      \
-       for ((var) = TAILQ_FIRST((head));                               \
-           (var) && ((tvar) = TAILQ_NEXT((var), field), 1);            \
-           (var) = (tvar))
-
-#define        TAILQ_FOREACH_REVERSE(var, head, headname, field)               \
-       for ((var) = TAILQ_LAST((head), headname);                      \
-           (var);                                                      \
-           (var) = TAILQ_PREV((var), headname, field))
-
-#define        TAILQ_FOREACH_REVERSE_SAFE(var, head, headname, field, tvar)    \
-       for ((var) = TAILQ_LAST((head), headname);                      \
-           (var) && ((tvar) = TAILQ_PREV((var), headname, field), 1);  \
-           (var) = (tvar))
-
-#define        TAILQ_INIT(head) do {                                           \
-       TAILQ_FIRST((head)) = NULL;                                     \
-       (head)->tqh_last = &TAILQ_FIRST((head));                        \
-       QMD_TRACE_HEAD(head);                                           \
-} while (0)
-
-#define        TAILQ_INSERT_AFTER(head, listelm, elm, field) do {              \
-       if ((TAILQ_NEXT((elm), field) = TAILQ_NEXT((listelm), field)) != NULL)\
-               TAILQ_NEXT((elm), field)->field.tqe_prev =              \
-                   &TAILQ_NEXT((elm), field);                          \
-       else {                                                          \
-               (head)->tqh_last = &TAILQ_NEXT((elm), field);           \
-               QMD_TRACE_HEAD(head);                                   \
-       }                                                               \
-       TAILQ_NEXT((listelm), field) = (elm);                           \
-       (elm)->field.tqe_prev = &TAILQ_NEXT((listelm), field);          \
-       QMD_TRACE_ELEM(&(elm)->field);                                  \
-       QMD_TRACE_ELEM(&listelm->field);                                \
-} while (0)
-
-#define        TAILQ_INSERT_BEFORE(listelm, elm, field) do {                   \
-       (elm)->field.tqe_prev = (listelm)->field.tqe_prev;              \
-       TAILQ_NEXT((elm), field) = (listelm);                           \
-       *(listelm)->field.tqe_prev = (elm);                             \
-       (listelm)->field.tqe_prev = &TAILQ_NEXT((elm), field);          \
-       QMD_TRACE_ELEM(&(elm)->field);                                  \
-       QMD_TRACE_ELEM(&listelm->field);                                \
-} while (0)
-
-#define        TAILQ_INSERT_HEAD(head, elm, field) do {                        \
-       if ((TAILQ_NEXT((elm), field) = TAILQ_FIRST((head))) != NULL)   \
-               TAILQ_FIRST((head))->field.tqe_prev =                   \
-                   &TAILQ_NEXT((elm), field);                          \
-       else                                                            \
-               (head)->tqh_last = &TAILQ_NEXT((elm), field);           \
-       TAILQ_FIRST((head)) = (elm);                                    \
-       (elm)->field.tqe_prev = &TAILQ_FIRST((head));                   \
-       QMD_TRACE_HEAD(head);                                           \
-       QMD_TRACE_ELEM(&(elm)->field);                                  \
-} while (0)
-
-#define        TAILQ_INSERT_TAIL(head, elm, field) do {                        \
-       TAILQ_NEXT((elm), field) = NULL;                                \
-       (elm)->field.tqe_prev = (head)->tqh_last;                       \
-       *(head)->tqh_last = (elm);                                      \
-       (head)->tqh_last = &TAILQ_NEXT((elm), field);                   \
-       QMD_TRACE_HEAD(head);                                           \
-       QMD_TRACE_ELEM(&(elm)->field);                                  \
-} while (0)
-
-#define        TAILQ_LAST(head, headname)                                      \
-       (*(((struct headname *)((head)->tqh_last))->tqh_last))
-
-#define        TAILQ_NEXT(elm, field) ((elm)->field.tqe_next)
-
-#define        TAILQ_PREV(elm, headname, field)                                \
-       (*(((struct headname *)((elm)->field.tqe_prev))->tqh_last))
-
-#define        TAILQ_REMOVE(head, elm, field) do {                             \
-       if ((TAILQ_NEXT((elm), field)) != NULL)                         \
-               TAILQ_NEXT((elm), field)->field.tqe_prev =              \
-                   (elm)->field.tqe_prev;                              \
-       else {                                                          \
-               (head)->tqh_last = (elm)->field.tqe_prev;               \
-               QMD_TRACE_HEAD(head);                                   \
-       }                                                               \
-       *(elm)->field.tqe_prev = TAILQ_NEXT((elm), field);              \
-       TRASHIT((elm)->field.tqe_next);                                 \
-       TRASHIT((elm)->field.tqe_prev);                                 \
-       QMD_TRACE_ELEM(&(elm)->field);                                  \
-} while (0)
-
-
-#endif /* _SYS_QUEUE_H */