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Posted to commits@mynewt.apache.org by ut...@apache.org on 2018/04/17 09:52:16 UTC

[mynewt-core] branch master updated: Add BSD compatibility queue.h

This is an automated email from the ASF dual-hosted git repository.

utzig pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/mynewt-core.git


The following commit(s) were added to refs/heads/master by this push:
     new 9ced361  Add BSD compatibility queue.h
9ced361 is described below

commit 9ced3617c28e6e142a055caa3805eaf2900d8b51
Author: Fabio Utzig <ut...@apache.org>
AuthorDate: Thu Mar 29 09:18:03 2018 -0300

    Add BSD compatibility queue.h
    
    This creates a new `sys` package and exports `<sys/queue.h>` to ease
    portability of external apps. `<os/queue.h>` was updated to use
    `<sys/queue.h>`.
    
    This fixes #972
---
 kernel/os/include/os/queue.h                       | 533 +--------------------
 kernel/os/pkg.yml                                  |   1 +
 .../os/include/os => sys/sys/include/sys}/queue.h  |   6 +-
 {kernel/os => sys/sys}/pkg.yml                     |  28 +-
 4 files changed, 25 insertions(+), 543 deletions(-)

diff --git a/kernel/os/include/os/queue.h b/kernel/os/include/os/queue.h
index faffd85..61da8d1 100644
--- a/kernel/os/include/os/queue.h
+++ b/kernel/os/include/os/queue.h
@@ -1,522 +1,25 @@
 /*
- * Copyright (c) 1991, 1993
- *	The Regents of the University of California.  All rights reserved.
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
  *
- * 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.
+ *  http://www.apache.org/licenses/LICENSE-2.0
  *
- * 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: src/sys/sys/queue.h,v 1.32.2.7 2002/04/17 14:21:02 des Exp $
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
  */
 
-#ifndef _QUEUE_H_
-#define	_QUEUE_H_
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/*
- * This file defines five types of data structures: singly-linked lists,
- * singly-linked tail queues, lists, tail queues, and circular 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.
- *
- * A circle 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 circle queue may be traversed in either direction, but has a more
- * complex end of list detection.
- *
- * For details on the use of these macros, see the queue(3) manual page.
- *
- *
- *                      SLIST   LIST    STAILQ  TAILQ   CIRCLEQ
- * _HEAD                +       +       +       +       +
- * _HEAD_INITIALIZER    +       +       +       +       +
- * _ENTRY               +       +       +       +       +
- * _INIT                +       +       +       +       +
- * _EMPTY               +       +       +       +       +
- * _FIRST               +       +       +       +       +
- * _NEXT                +       +       +       +       +
- * _PREV                -       -       -       +       +
- * _LAST                -       -       +       +       +
- * _FOREACH             +       +       +       +       +
- * _FOREACH_REVERSE     -       -       -       +       +
- * _INSERT_HEAD         +       +       +       +       +
- * _INSERT_BEFORE       -       +       -       +       +
- * _INSERT_AFTER        +       +       +       +       +
- * _INSERT_TAIL         -       -       +       +       +
- * _REMOVE_HEAD         +       -       +       -       -
- * _REMOVE              +       +       +       +       +
- *
- */
-
-/*
- * 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_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_NEXT(curelm, field) =                         \
-            SLIST_NEXT(SLIST_NEXT(curelm, 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_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_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 *)					\
-		((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);		\
-		if ((STAILQ_NEXT(curelm, field) =			\
-		     STAILQ_NEXT(STAILQ_NEXT(curelm, field), field)) == NULL)\
-			(head)->stqh_last = &STAILQ_NEXT((curelm), field);\
-	}								\
-} 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_HEAD_UNTIL(head, elm, field) do {			\
-	if ((STAILQ_FIRST((head)) = STAILQ_NEXT((elm), field)) == NULL)	\
-		(head)->stqh_last = &STAILQ_FIRST((head));		\
-} while (0)
-
-#define STAILQ_REMOVE_AFTER(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.
- */
-
-#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_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 */		\
-}
-
-#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 */	\
-}
-
-/*
- * Tail queue functions.
- */
-#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_REVERSE(var, head, headname, field)		\
-	for ((var) = TAILQ_LAST((head), headname);			\
-	    (var);							\
-	    (var) = TAILQ_PREV((var), headname, field))
-
-#define	TAILQ_INIT(head) do {						\
-	TAILQ_FIRST((head)) = NULL;					\
-	(head)->tqh_last = &TAILQ_FIRST((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);		\
-	TAILQ_NEXT((listelm), field) = (elm);				\
-	(elm)->field.tqe_prev = &TAILQ_NEXT((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);		\
-} 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));			\
-} 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);			\
-} 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;		\
-	*(elm)->field.tqe_prev = TAILQ_NEXT((elm), field);		\
-} while (0)
-
-/*
- * Circular queue declarations.
- */
-#define	CIRCLEQ_HEAD(name, type)					\
-struct name {								\
-	struct type *cqh_first;		/* first element */		\
-	struct type *cqh_last;		/* last element */		\
-}
-
-#define	CIRCLEQ_HEAD_INITIALIZER(head)					\
-	{ (void *)&(head), (void *)&(head) }
-
-#define	CIRCLEQ_ENTRY(type)						\
-struct {								\
-	struct type *cqe_next;		/* next element */		\
-	struct type *cqe_prev;		/* previous element */		\
-}
-
-/*
- * Circular queue functions.
- */
-#define	CIRCLEQ_EMPTY(head)	((head)->cqh_first == (void *)(head))
-
-#define	CIRCLEQ_FIRST(head)	((head)->cqh_first)
-
-#define	CIRCLEQ_FOREACH(var, head, field)				\
-	for ((var) = CIRCLEQ_FIRST((head));				\
-	    (var) != (void *)(head) || ((var) = NULL);			\
-	    (var) = CIRCLEQ_NEXT((var), field))
-
-#define	CIRCLEQ_FOREACH_REVERSE(var, head, field)			\
-	for ((var) = CIRCLEQ_LAST((head));				\
-	    (var) != (void *)(head) || ((var) = NULL);			\
-	    (var) = CIRCLEQ_PREV((var), field))
-
-#define	CIRCLEQ_INIT(head) do {						\
-	CIRCLEQ_FIRST((head)) = (void *)(head);				\
-	CIRCLEQ_LAST((head)) = (void *)(head);				\
-} while (0)
-
-#define	CIRCLEQ_INSERT_AFTER(head, listelm, elm, field) do {		\
-	CIRCLEQ_NEXT((elm), field) = CIRCLEQ_NEXT((listelm), field);	\
-	CIRCLEQ_PREV((elm), field) = (listelm);				\
-	if (CIRCLEQ_NEXT((listelm), field) == (void *)(head))		\
-		CIRCLEQ_LAST((head)) = (elm);				\
-	else								\
-		CIRCLEQ_PREV(CIRCLEQ_NEXT((listelm), field), field) = (elm);\
-	CIRCLEQ_NEXT((listelm), field) = (elm);				\
-} while (0)
-
-#define	CIRCLEQ_INSERT_BEFORE(head, listelm, elm, field) do {		\
-	CIRCLEQ_NEXT((elm), field) = (listelm);				\
-	CIRCLEQ_PREV((elm), field) = CIRCLEQ_PREV((listelm), field);	\
-	if (CIRCLEQ_PREV((listelm), field) == (void *)(head))		\
-		CIRCLEQ_FIRST((head)) = (elm);				\
-	else								\
-		CIRCLEQ_NEXT(CIRCLEQ_PREV((listelm), field), field) = (elm);\
-	CIRCLEQ_PREV((listelm), field) = (elm);				\
-} while (0)
-
-#define	CIRCLEQ_INSERT_HEAD(head, elm, field) do {			\
-	CIRCLEQ_NEXT((elm), field) = CIRCLEQ_FIRST((head));		\
-	CIRCLEQ_PREV((elm), field) = (void *)(head);			\
-	if (CIRCLEQ_LAST((head)) == (void *)(head))			\
-		CIRCLEQ_LAST((head)) = (elm);				\
-	else								\
-		CIRCLEQ_PREV(CIRCLEQ_FIRST((head)), field) = (elm);	\
-	CIRCLEQ_FIRST((head)) = (elm);					\
-} while (0)
-
-#define	CIRCLEQ_INSERT_TAIL(head, elm, field) do {			\
-	CIRCLEQ_NEXT((elm), field) = (void *)(head);			\
-	CIRCLEQ_PREV((elm), field) = CIRCLEQ_LAST((head));		\
-	if (CIRCLEQ_FIRST((head)) == (void *)(head))			\
-		CIRCLEQ_FIRST((head)) = (elm);				\
-	else								\
-		CIRCLEQ_NEXT(CIRCLEQ_LAST((head)), field) = (elm);	\
-	CIRCLEQ_LAST((head)) = (elm);					\
-} while (0)
-
-#define	CIRCLEQ_LAST(head)	((head)->cqh_last)
-
-#define	CIRCLEQ_NEXT(elm,field)	((elm)->field.cqe_next)
-
-#define	CIRCLEQ_PREV(elm,field)	((elm)->field.cqe_prev)
-
-#define	CIRCLEQ_REMOVE(head, elm, field) do {				\
-	if (CIRCLEQ_NEXT((elm), field) == (void *)(head))		\
-		CIRCLEQ_LAST((head)) = CIRCLEQ_PREV((elm), field);	\
-	else								\
-		CIRCLEQ_PREV(CIRCLEQ_NEXT((elm), field), field) =	\
-		    CIRCLEQ_PREV((elm), field);				\
-	if (CIRCLEQ_PREV((elm), field) == (void *)(head))		\
-		CIRCLEQ_FIRST((head)) = CIRCLEQ_NEXT((elm), field);	\
-	else								\
-		CIRCLEQ_NEXT(CIRCLEQ_PREV((elm), field), field) =	\
-		    CIRCLEQ_NEXT((elm), field);				\
-} while (0)
+#ifndef _QUEUE_H
+#define _QUEUE_H
 
-#ifdef __cplusplus
-}
-#endif
+#include <sys/queue.h>
 
-#endif /* !_QUEUE_H_ */
+#endif /* _QUEUE_H */
diff --git a/kernel/os/pkg.yml b/kernel/os/pkg.yml
index 3d8a58b..806ae45 100644
--- a/kernel/os/pkg.yml
+++ b/kernel/os/pkg.yml
@@ -25,6 +25,7 @@ pkg.keywords:
 
 pkg.deps:
     - sys/sysinit
+    - sys/sys
     - util/mem
 
 pkg.req_apis:
diff --git a/kernel/os/include/os/queue.h b/sys/sys/include/sys/queue.h
old mode 100644
new mode 100755
similarity index 99%
copy from kernel/os/include/os/queue.h
copy to sys/sys/include/sys/queue.h
index faffd85..bbe5064
--- a/kernel/os/include/os/queue.h
+++ b/sys/sys/include/sys/queue.h
@@ -30,8 +30,8 @@
  * $FreeBSD: src/sys/sys/queue.h,v 1.32.2.7 2002/04/17 14:21:02 des Exp $
  */
 
-#ifndef _QUEUE_H_
-#define	_QUEUE_H_
+#ifndef _SYS_QUEUE_H_
+#define	_SYS_QUEUE_H_
 
 #ifdef __cplusplus
 extern "C" {
@@ -519,4 +519,4 @@ struct {								\
 }
 #endif
 
-#endif /* !_QUEUE_H_ */
+#endif /* !_SYS_QUEUE_H_ */
diff --git a/kernel/os/pkg.yml b/sys/sys/pkg.yml
similarity index 71%
copy from kernel/os/pkg.yml
copy to sys/sys/pkg.yml
index 3d8a58b..4c058f4 100644
--- a/kernel/os/pkg.yml
+++ b/sys/sys/pkg.yml
@@ -15,32 +15,10 @@
 # KIND, either express or implied.  See the License for the
 # specific language governing permissions and limitations
 # under the License.
-#
 
-pkg.name: kernel/os
-pkg.description: Mynewt operating system core.
+pkg.name: sys/sys
+pkg.description: BSD compatible queue.h
 pkg.author: "Apache Mynewt <de...@mynewt.apache.org>"
 pkg.homepage: "http://mynewt.apache.org/"
 pkg.keywords:
-
-pkg.deps:
-    - sys/sysinit
-    - util/mem
-
-pkg.req_apis:
-    - console
-
-pkg.deps.OS_CLI:
-    - sys/shell
-
-pkg.deps.OS_COREDUMP:
-    - sys/coredump
-
-pkg.deps.BSP_SIMULATED:
-    - "@apache-mynewt-core/kernel/sim"
-
-pkg.deps.OS_SYSVIEW:
-    - sys/sysview
-
-pkg.init:
-    os_pkg_init: 0
+    - sys

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