OpenCores
URL https://opencores.org/ocsvn/or1k/or1k/trunk

Subversion Repositories or1k

[/] [or1k/] [trunk/] [gdb-5.0/] [gdb/] [osf-share/] [cma_list.h] - Blame information for rev 1765

Details | Compare with Previous | View Log

Line No. Rev Author Line
1 106 markom
/*
2
 * (c) Copyright 1990-1996 OPEN SOFTWARE FOUNDATION, INC.
3
 * (c) Copyright 1990-1996 HEWLETT-PACKARD COMPANY
4
 * (c) Copyright 1990-1996 DIGITAL EQUIPMENT CORPORATION
5
 * (c) Copyright 1991, 1992 Siemens-Nixdorf Information Systems
6
 * To anyone who acknowledges that this file is provided "AS IS" without
7
 * any express or implied warranty: permission to use, copy, modify, and
8
 * distribute this file for any purpose is hereby granted without fee,
9
 * provided that the above copyright notices and this notice appears in
10
 * all source code copies, and that none of the names listed above be used
11
 * in advertising or publicity pertaining to distribution of the software
12
 * without specific, written prior permission.  None of these organizations
13
 * makes any representations about the suitability of this software for
14
 * any purpose.
15
 */
16
/*
17
 *      Header file for generic list functions operating on singly linked
18
 *      null-terminated lists.  Items may not be REMOVED from the list!  The
19
 *      intent is that the list can be traversed (for read-only operations)
20
 *      without locking, since insertion is "safe" (though not truely
21
 *      atomic).  THIS ASSUMES THAT THE HARDWARE MAKES WRITES VISIBLE TO READS
22
 *      IN THE ORDER IN WHICH THEY OCCURRED!  WITHOUT SUCH READ/WRITE
23
 *      ORDERING, IT MAY BE NECESSARY TO INSERT "BARRIERS" TO PRODUCE THE
24
 *      REQUIRED VISIBILITY!
25
 */
26
 
27
#ifndef CMA_LIST
28
#define CMA_LIST
29
 
30
/*
31
 *  INCLUDE FILES
32
 */
33
 
34
#include <cma.h>
35
 
36
/*
37
 * CONSTANTS AND MACROS
38
 */
39
 
40
#define cma__c_null_list        ((cma__t_list *)cma_c_null_ptr)
41
 
42
/*
43
 * Test whether a list is empty.  Return cma_c_true if so, else
44
 * cma_c_false.
45
 */
46
#define cma__list_empty(head)   ((head)->link == cma__c_null_list)
47
 
48
/*
49
 * Initialize a queue header to empty.
50
 */
51
#define cma__list_init(head)    (void)((head)->link = cma__c_null_list)
52
 
53
/*
54
 * Insert an element in a list following the specified item (or at the
55
 * beginning of the list if "list" is the list head).  NOTE: insertion
56
 * operations should be interlocked by the caller!
57
 */
58
#define cma__list_insert(element,list)    (void)(       \
59
    (element)->link             = (list)->link,         \
60
    (list)->link                = (element))
61
 
62
/*
63
 * Return the next item in a list (or the first, if the address is of the
64
 * list header)
65
 */
66
#define cma__list_next(element)    ((element)->link)
67
 
68
/*
69
 * TYPEDEFS
70
 */
71
 
72
typedef struct CMA__T_LIST {
73
    struct CMA__T_LIST  *link;          /* Forward link */
74
    } cma__t_list;
75
 
76
/*
77
 *  GLOBAL DATA
78
 */
79
 
80
/*
81
 * INTERNAL INTERFACES
82
 */
83
 
84
#endif

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.