eal/windows: add sys/queue.h implementation copy
authorAnand Rawat <anand.rawat@intel.com>
Tue, 2 Apr 2019 03:54:54 +0000 (20:54 -0700)
committerThomas Monjalon <thomas@monjalon.net>
Tue, 2 Apr 2019 23:21:31 +0000 (01:21 +0200)
Adding sys/queue.h on Windows for supporting common code.
This implementation has BSD-3-Clause licensing.

Signed-off-by: Ranjit Menon <ranjit.menon@intel.com>
Signed-off-by: Anand Rawat <anand.rawat@intel.com>
Reviewed-by: Jeff Shaw <jeffrey.b.shaw@intel.com>
Acked-by: Harini Ramakrishnan <harini.ramakrishnan@microsoft.com>
lib/librte_eal/windows/eal/include/sys/queue.h [new file with mode: 0644]

diff --git a/lib/librte_eal/windows/eal/include/sys/queue.h b/lib/librte_eal/windows/eal/include/sys/queue.h
new file mode 100644 (file)
index 0000000..5ee4916
--- /dev/null
@@ -0,0 +1,320 @@
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * 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.
+ * 3. 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.
+ *
+ */
+
+#ifndef _SYS_QUEUE_H_
+#define        _SYS_QUEUE_H_
+
+/*
+ * This file defines tail queues.
+ *
+ * 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.
+ *
+ * Below is a summary of implemented functions where:
+ *  +  means the macro is available
+ *  -  means the macro is not available
+ *  s  means the macro is available but is slow (runs in O(n) time)
+ *
+ *                             TAILQ
+ * _HEAD                       +
+ * _CLASS_HEAD                 +
+ * _HEAD_INITIALIZER           +
+ * _ENTRY                      +
+ * _CLASS_ENTRY                        +
+ * _INIT                       +
+ * _EMPTY                      +
+ * _FIRST                      +
+ * _NEXT                       +
+ * _PREV                       +
+ * _LAST                       +
+ * _LAST_FAST                  +
+ * _FOREACH                    +
+ * _FOREACH_FROM               +
+ * _FOREACH_SAFE               +
+ * _FOREACH_FROM_SAFE          +
+ * _FOREACH_REVERSE            +
+ * _FOREACH_REVERSE_FROM       +
+ * _FOREACH_REVERSE_SAFE       +
+ * _FOREACH_REVERSE_FROM_SAFE  +
+ * _INSERT_HEAD                        +
+ * _INSERT_BEFORE              +
+ * _INSERT_AFTER               +
+ * _INSERT_TAIL                        +
+ * _CONCAT                     +
+ * _REMOVE_AFTER               -
+ * _REMOVE_HEAD                        -
+ * _REMOVE                     +
+ * _SWAP                       +
+ *
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define        QMD_TRACE_ELEM(elem)
+#define        QMD_TRACE_HEAD(head)
+#define        TRACEBUF
+#define        TRACEBUF_INITIALIZER
+
+#define        TRASHIT(x)
+#define        QMD_IS_TRASHED(x)       0
+
+#define        QMD_SAVELINK(name, link)
+
+#ifdef __cplusplus
+/*
+ * In C++ there can be structure lists and class lists:
+ */
+#define        QUEUE_TYPEOF(type) type
+#else
+#define        QUEUE_TYPEOF(type) struct type
+#endif
+
+/*
+ * 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_CLASS_HEAD(name, type)                                    \
+struct name {                                                          \
+       class type *tqh_first;  /* first element */                     \
+       class type **tqh_last;  /* addr of last next element */         \
+       TRACEBUF                                                        \
+}
+
+#define        TAILQ_HEAD_INITIALIZER(head)                                    \
+       { NULL, &(head).tqh_first, TRACEBUF_INITIALIZER }
+
+#define        TAILQ_ENTRY(type)                                               \
+struct {                                                               \
+       struct type *tqe_next;  /* next element */                      \
+       struct type **tqe_prev; /* address of previous next element */  \
+       TRACEBUF                                                        \
+}
+
+#define        TAILQ_CLASS_ENTRY(type)                                         \
+struct {                                                               \
+       class type *tqe_next;   /* next element */                      \
+       class type **tqe_prev;  /* address of previous next element */  \
+       TRACEBUF                                                        \
+}
+
+/*
+ * Tail queue functions.
+ */
+#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)
+
+#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_FROM(var, head, field)                            \
+       for ((var) = ((var) ? (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_FROM_SAFE(var, head, field, tvar)                 \
+       for ((var) = ((var) ? (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_FROM(var, head, headname, field)          \
+       for ((var) = ((var) ? (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_FOREACH_REVERSE_FROM_SAFE(var, head, headname, field, tvar) \
+       for ((var) = ((var) ? (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);                           \
+       TAILQ_NEXT((elm), field) = TAILQ_NEXT((listelm), field);        \
+       if (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);                              \
+       TAILQ_NEXT((elm), field) = TAILQ_FIRST((head));                 \
+       if (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))
+
+/*
+ * The FAST function is fast in that it causes no data access other
+ * then the access to the head. The standard LAST function above
+ * will cause a data access of both the element you want and
+ * the previous element. FAST is very useful for instances when
+ * you may want to prefetch the last data element.
+ */
+#define        TAILQ_LAST_FAST(head, type, field)                      \
+       (TAILQ_EMPTY(head) ? NULL : __containerof((head)->tqh_last,     \
+       QUEUE_TYPEOF(type), field.tqe_next))
+
+#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_SAVELINK(oldnext, (elm)->field.tqe_next);                   \
+       QMD_SAVELINK(oldprev, (elm)->field.tqe_prev);                   \
+       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(*oldnext);                                              \
+       TRASHIT(*oldprev);                                              \
+       QMD_TRACE_ELEM(&(elm)->field);                                  \
+} while (0)
+
+#define TAILQ_SWAP(head1, head2, type, field) do {                     \
+       QUEUE_TYPEOF(type) * swap_first = (head1)->tqh_first;           \
+       QUEUE_TYPEOF(type) * *swap_last = (head1)->tqh_last;            \
+       (head1)->tqh_first = (head2)->tqh_first;                        \
+       (head1)->tqh_last = (head2)->tqh_last;                          \
+       (head2)->tqh_first = swap_first;                                \
+       (head2)->tqh_last = swap_last;                                  \
+       swap_first = (head1)->tqh_first;                                \
+       if (swap_first != NULL)                                         \
+               swap_first->field.tqe_prev = &(head1)->tqh_first;       \
+       else                                                            \
+               (head1)->tqh_last = &(head1)->tqh_first;                \
+       swap_first = (head2)->tqh_first;                                \
+       if (swap_first != NULL)                 \
+               swap_first->field.tqe_prev = &(head2)->tqh_first;       \
+       else                                                            \
+               (head2)->tqh_last = &(head2)->tqh_first;                \
+} while (0)
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _SYS_QUEUE_H_ */