1 /*
2  * Copyright (c) 2017, Texas Instruments Incorporated
3  * 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  *
9  * *  Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  *
12  * *  Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * *  Neither the name of Texas Instruments Incorporated nor the names of
17  *    its contributors may be used to endorse or promote products derived
18  *    from this software without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
22  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
24  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
25  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
26  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
27  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
28  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
29  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
30  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31  */
32 /*
33  *  ======== QueueP.h ========
34  */
35 
36 typedef struct _QueueP_Elem {
37     struct _QueueP_Elem *volatile next;
38     struct _QueueP_Elem *volatile prev;
39 } QueueP_Elem;
40 
41 typedef struct _QueueP_Obj {
42     QueueP_Elem elem;
43 } QueueP_Obj;
44 
45 typedef QueueP_Obj *QueueP_Handle;
46 
47 void QueueP_init(QueueP_Obj *obj);
48 uintptr_t QueueP_head(QueueP_Obj *obj);
49 uintptr_t QueueP_next(QueueP_Elem *qelem);
50 uintptr_t QueueP_prev(QueueP_Elem *qelem);
51 uintptr_t QueueP_get(QueueP_Obj *obj);
52 void QueueP_put(QueueP_Obj *obj, QueueP_Elem *elem);
53 void QueueP_remove(QueueP_Elem *qelem) ;
54 bool QueueP_empty(QueueP_Obj *obj);
55