annotate compat/queue.h @ 34:34ada71ff3e5

Allow local makefile overrides in local.mk
author Guido Berhoerster <guido+pwm@berhoerster.name>
date Wed, 31 Jul 2019 11:21:54 +0200
parents a08ef0674d8e
children
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1 /* $OpenBSD: queue.h,v 1.44 2016/09/09 20:31:46 millert Exp $ */
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2 /* $NetBSD: queue.h,v 1.11 1996/05/16 05:17:14 mycroft Exp $ */
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3
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4 /*
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5 * Copyright (c) 1991, 1993
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6 * The Regents of the University of California. All rights reserved.
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7 *
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8 * Redistribution and use in source and binary forms, with or without
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9 * modification, are permitted provided that the following conditions
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10 * are met:
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11 * 1. Redistributions of source code must retain the above copyright
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12 * notice, this list of conditions and the following disclaimer.
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13 * 2. Redistributions in binary form must reproduce the above copyright
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14 * notice, this list of conditions and the following disclaimer in the
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15 * documentation and/or other materials provided with the distribution.
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16 * 3. Neither the name of the University nor the names of its contributors
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17 * may be used to endorse or promote products derived from this software
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18 * without specific prior written permission.
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19 *
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20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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30 * SUCH DAMAGE.
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31 *
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32 * @(#)queue.h 8.5 (Berkeley) 8/20/94
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33 */
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34
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35 #ifndef _SYS_QUEUE_H_
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36 #define _SYS_QUEUE_H_
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37
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38 #include <stddef.h>
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39
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40 /*
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41 * This file defines five types of data structures: singly-linked lists,
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42 * lists, simple queues, tail queues and XOR simple queues.
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43 *
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44 *
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45 * A singly-linked list is headed by a single forward pointer. The elements
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46 * are singly linked for minimum space and pointer manipulation overhead at
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47 * the expense of O(n) removal for arbitrary elements. New elements can be
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48 * added to the list after an existing element or at the head of the list.
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49 * Elements being removed from the head of the list should use the explicit
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50 * macro for this purpose for optimum efficiency. A singly-linked list may
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51 * only be traversed in the forward direction. Singly-linked lists are ideal
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52 * for applications with large datasets and few or no removals or for
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53 * implementing a LIFO queue.
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54 *
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55 * A list is headed by a single forward pointer (or an array of forward
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56 * pointers for a hash table header). The elements are doubly linked
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57 * so that an arbitrary element can be removed without a need to
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58 * traverse the list. New elements can be added to the list before
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59 * or after an existing element or at the head of the list. A list
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60 * may only be traversed in the forward direction.
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61 *
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62 * A simple queue is headed by a pair of pointers, one to the head of the
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63 * list and the other to the tail of the list. The elements are singly
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64 * linked to save space, so elements can only be removed from the
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65 * head of the list. New elements can be added to the list before or after
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66 * an existing element, at the head of the list, or at the end of the
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67 * list. A simple queue may only be traversed in the forward direction.
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68 *
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69 * A tail queue is headed by a pair of pointers, one to the head of the
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70 * list and the other to the tail of the list. The elements are doubly
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71 * linked so that an arbitrary element can be removed without a need to
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72 * traverse the list. New elements can be added to the list before or
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73 * after an existing element, at the head of the list, or at the end of
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74 * the list. A tail queue may be traversed in either direction.
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75 *
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76 * An XOR simple queue is used in the same way as a regular simple queue.
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77 * The difference is that the head structure also includes a "cookie" that
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78 * is XOR'd with the queue pointer (first, last or next) to generate the
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79 * real pointer value.
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80 *
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81 * For details on the use of these macros, see the queue(3) manual page.
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82 */
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83
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84 #if defined(QUEUE_MACRO_DEBUG) || (defined(_KERNEL) && defined(DIAGNOSTIC))
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85 #define _Q_INVALIDATE(a) (a) = ((void *)-1)
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86 #else
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87 #define _Q_INVALIDATE(a)
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88 #endif
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89
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90 /*
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91 * Singly-linked List definitions.
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92 */
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93 #define SLIST_HEAD(name, type) \
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94 struct name { \
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95 struct type *slh_first; /* first element */ \
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96 }
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97
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98 #define SLIST_HEAD_INITIALIZER(head) \
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99 { NULL }
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100
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101 #define SLIST_ENTRY(type) \
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102 struct { \
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103 struct type *sle_next; /* next element */ \
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104 }
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105
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106 /*
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107 * Singly-linked List access methods.
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108 */
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109 #define SLIST_FIRST(head) ((head)->slh_first)
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110 #define SLIST_END(head) NULL
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111 #define SLIST_EMPTY(head) (SLIST_FIRST(head) == SLIST_END(head))
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112 #define SLIST_NEXT(elm, field) ((elm)->field.sle_next)
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113
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114 #define SLIST_FOREACH(var, head, field) \
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115 for((var) = SLIST_FIRST(head); \
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116 (var) != SLIST_END(head); \
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117 (var) = SLIST_NEXT(var, field))
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118
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119 #define SLIST_FOREACH_SAFE(var, head, field, tvar) \
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120 for ((var) = SLIST_FIRST(head); \
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121 (var) && ((tvar) = SLIST_NEXT(var, field), 1); \
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122 (var) = (tvar))
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123
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124 /*
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125 * Singly-linked List functions.
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126 */
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127 #define SLIST_INIT(head) { \
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128 SLIST_FIRST(head) = SLIST_END(head); \
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129 }
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130
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131 #define SLIST_INSERT_AFTER(slistelm, elm, field) do { \
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132 (elm)->field.sle_next = (slistelm)->field.sle_next; \
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133 (slistelm)->field.sle_next = (elm); \
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diff changeset
134 } while (0)
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135
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136 #define SLIST_INSERT_HEAD(head, elm, field) do { \
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137 (elm)->field.sle_next = (head)->slh_first; \
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138 (head)->slh_first = (elm); \
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diff changeset
139 } while (0)
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140
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141 #define SLIST_REMOVE_AFTER(elm, field) do { \
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142 (elm)->field.sle_next = (elm)->field.sle_next->field.sle_next; \
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143 } while (0)
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144
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145 #define SLIST_REMOVE_HEAD(head, field) do { \
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146 (head)->slh_first = (head)->slh_first->field.sle_next; \
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147 } while (0)
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148
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149 #define SLIST_REMOVE(head, elm, type, field) do { \
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150 if ((head)->slh_first == (elm)) { \
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151 SLIST_REMOVE_HEAD((head), field); \
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152 } else { \
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153 struct type *curelm = (head)->slh_first; \
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154 \
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155 while (curelm->field.sle_next != (elm)) \
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156 curelm = curelm->field.sle_next; \
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157 curelm->field.sle_next = \
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158 curelm->field.sle_next->field.sle_next; \
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159 } \
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160 _Q_INVALIDATE((elm)->field.sle_next); \
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161 } while (0)
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162
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163 /*
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164 * List definitions.
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165 */
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166 #define LIST_HEAD(name, type) \
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167 struct name { \
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168 struct type *lh_first; /* first element */ \
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169 }
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170
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171 #define LIST_HEAD_INITIALIZER(head) \
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172 { NULL }
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173
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174 #define LIST_ENTRY(type) \
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175 struct { \
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176 struct type *le_next; /* next element */ \
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177 struct type **le_prev; /* address of previous next element */ \
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178 }
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179
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180 /*
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181 * List access methods.
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182 */
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183 #define LIST_FIRST(head) ((head)->lh_first)
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184 #define LIST_END(head) NULL
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185 #define LIST_EMPTY(head) (LIST_FIRST(head) == LIST_END(head))
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186 #define LIST_NEXT(elm, field) ((elm)->field.le_next)
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187
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188 #define LIST_FOREACH(var, head, field) \
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189 for((var) = LIST_FIRST(head); \
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190 (var)!= LIST_END(head); \
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191 (var) = LIST_NEXT(var, field))
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192
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193 #define LIST_FOREACH_SAFE(var, head, field, tvar) \
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194 for ((var) = LIST_FIRST(head); \
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195 (var) && ((tvar) = LIST_NEXT(var, field), 1); \
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196 (var) = (tvar))
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197
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198 /*
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199 * List functions.
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200 */
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201 #define LIST_INIT(head) do { \
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202 LIST_FIRST(head) = LIST_END(head); \
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203 } while (0)
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204
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205 #define LIST_INSERT_AFTER(listelm, elm, field) do { \
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diff changeset
206 if (((elm)->field.le_next = (listelm)->field.le_next) != NULL) \
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207 (listelm)->field.le_next->field.le_prev = \
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208 &(elm)->field.le_next; \
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209 (listelm)->field.le_next = (elm); \
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210 (elm)->field.le_prev = &(listelm)->field.le_next; \
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211 } while (0)
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212
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213 #define LIST_INSERT_BEFORE(listelm, elm, field) do { \
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diff changeset
214 (elm)->field.le_prev = (listelm)->field.le_prev; \
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215 (elm)->field.le_next = (listelm); \
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216 *(listelm)->field.le_prev = (elm); \
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217 (listelm)->field.le_prev = &(elm)->field.le_next; \
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218 } while (0)
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219
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diff changeset
220 #define LIST_INSERT_HEAD(head, elm, field) do { \
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diff changeset
221 if (((elm)->field.le_next = (head)->lh_first) != NULL) \
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222 (head)->lh_first->field.le_prev = &(elm)->field.le_next;\
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223 (head)->lh_first = (elm); \
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224 (elm)->field.le_prev = &(head)->lh_first; \
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225 } while (0)
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226
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227 #define LIST_REMOVE(elm, field) do { \
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228 if ((elm)->field.le_next != NULL) \
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229 (elm)->field.le_next->field.le_prev = \
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230 (elm)->field.le_prev; \
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diff changeset
231 *(elm)->field.le_prev = (elm)->field.le_next; \
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232 _Q_INVALIDATE((elm)->field.le_prev); \
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233 _Q_INVALIDATE((elm)->field.le_next); \
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diff changeset
234 } while (0)
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235
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diff changeset
236 #define LIST_REPLACE(elm, elm2, field) do { \
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diff changeset
237 if (((elm2)->field.le_next = (elm)->field.le_next) != NULL) \
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238 (elm2)->field.le_next->field.le_prev = \
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diff changeset
239 &(elm2)->field.le_next; \
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diff changeset
240 (elm2)->field.le_prev = (elm)->field.le_prev; \
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diff changeset
241 *(elm2)->field.le_prev = (elm2); \
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242 _Q_INVALIDATE((elm)->field.le_prev); \
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243 _Q_INVALIDATE((elm)->field.le_next); \
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244 } while (0)
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245
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246 /*
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diff changeset
247 * Simple queue definitions.
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248 */
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249 #define SIMPLEQ_HEAD(name, type) \
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250 struct name { \
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251 struct type *sqh_first; /* first element */ \
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252 struct type **sqh_last; /* addr of last next element */ \
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253 }
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254
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255 #define SIMPLEQ_HEAD_INITIALIZER(head) \
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256 { NULL, &(head).sqh_first }
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257
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258 #define SIMPLEQ_ENTRY(type) \
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diff changeset
259 struct { \
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diff changeset
260 struct type *sqe_next; /* next element */ \
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261 }
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262
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263 /*
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diff changeset
264 * Simple queue access methods.
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diff changeset
265 */
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266 #define SIMPLEQ_FIRST(head) ((head)->sqh_first)
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diff changeset
267 #define SIMPLEQ_END(head) NULL
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268 #define SIMPLEQ_EMPTY(head) (SIMPLEQ_FIRST(head) == SIMPLEQ_END(head))
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diff changeset
269 #define SIMPLEQ_NEXT(elm, field) ((elm)->field.sqe_next)
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270
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271 #define SIMPLEQ_FOREACH(var, head, field) \
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272 for((var) = SIMPLEQ_FIRST(head); \
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273 (var) != SIMPLEQ_END(head); \
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diff changeset
274 (var) = SIMPLEQ_NEXT(var, field))
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diff changeset
275
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276 #define SIMPLEQ_FOREACH_SAFE(var, head, field, tvar) \
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277 for ((var) = SIMPLEQ_FIRST(head); \
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278 (var) && ((tvar) = SIMPLEQ_NEXT(var, field), 1); \
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diff changeset
279 (var) = (tvar))
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280
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diff changeset
281 /*
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Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
282 * Simple queue functions.
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Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
283 */
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diff changeset
284 #define SIMPLEQ_INIT(head) do { \
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Guido Berhoerster <guido+pwm@berhoerster.name>
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diff changeset
285 (head)->sqh_first = NULL; \
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286 (head)->sqh_last = &(head)->sqh_first; \
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parents:
diff changeset
287 } while (0)
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288
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289 #define SIMPLEQ_INSERT_HEAD(head, elm, field) do { \
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diff changeset
290 if (((elm)->field.sqe_next = (head)->sqh_first) == NULL) \
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diff changeset
291 (head)->sqh_last = &(elm)->field.sqe_next; \
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diff changeset
292 (head)->sqh_first = (elm); \
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diff changeset
293 } while (0)
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294
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295 #define SIMPLEQ_INSERT_TAIL(head, elm, field) do { \
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diff changeset
296 (elm)->field.sqe_next = NULL; \
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297 *(head)->sqh_last = (elm); \
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298 (head)->sqh_last = &(elm)->field.sqe_next; \
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diff changeset
299 } while (0)
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300
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diff changeset
301 #define SIMPLEQ_INSERT_AFTER(head, listelm, elm, field) do { \
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diff changeset
302 if (((elm)->field.sqe_next = (listelm)->field.sqe_next) == NULL)\
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diff changeset
303 (head)->sqh_last = &(elm)->field.sqe_next; \
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Guido Berhoerster <guido+pwm@berhoerster.name>
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diff changeset
304 (listelm)->field.sqe_next = (elm); \
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Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
305 } while (0)
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Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
306
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Guido Berhoerster <guido+pwm@berhoerster.name>
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diff changeset
307 #define SIMPLEQ_REMOVE_HEAD(head, field) do { \
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Guido Berhoerster <guido+pwm@berhoerster.name>
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diff changeset
308 if (((head)->sqh_first = (head)->sqh_first->field.sqe_next) == NULL) \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
309 (head)->sqh_last = &(head)->sqh_first; \
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Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
310 } while (0)
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parents:
diff changeset
311
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diff changeset
312 #define SIMPLEQ_REMOVE_AFTER(head, elm, field) do { \
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Guido Berhoerster <guido+pwm@berhoerster.name>
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diff changeset
313 if (((elm)->field.sqe_next = (elm)->field.sqe_next->field.sqe_next) \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
314 == NULL) \
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Guido Berhoerster <guido+pwm@berhoerster.name>
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diff changeset
315 (head)->sqh_last = &(elm)->field.sqe_next; \
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parents:
diff changeset
316 } while (0)
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diff changeset
317
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diff changeset
318 #define SIMPLEQ_CONCAT(head1, head2) do { \
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Guido Berhoerster <guido+pwm@berhoerster.name>
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diff changeset
319 if (!SIMPLEQ_EMPTY((head2))) { \
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Guido Berhoerster <guido+pwm@berhoerster.name>
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diff changeset
320 *(head1)->sqh_last = (head2)->sqh_first; \
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Guido Berhoerster <guido+pwm@berhoerster.name>
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diff changeset
321 (head1)->sqh_last = (head2)->sqh_last; \
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Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
322 SIMPLEQ_INIT((head2)); \
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Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
323 } \
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Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
324 } while (0)
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Guido Berhoerster <guido+pwm@berhoerster.name>
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diff changeset
325
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Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
326 /*
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Guido Berhoerster <guido+pwm@berhoerster.name>
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diff changeset
327 * XOR Simple queue definitions.
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Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
328 */
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Guido Berhoerster <guido+pwm@berhoerster.name>
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diff changeset
329 #define XSIMPLEQ_HEAD(name, type) \
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diff changeset
330 struct name { \
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diff changeset
331 struct type *sqx_first; /* first element */ \
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diff changeset
332 struct type **sqx_last; /* addr of last next element */ \
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Guido Berhoerster <guido+pwm@berhoerster.name>
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diff changeset
333 unsigned long sqx_cookie; \
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Guido Berhoerster <guido+pwm@berhoerster.name>
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diff changeset
334 }
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diff changeset
335
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diff changeset
336 #define XSIMPLEQ_ENTRY(type) \
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diff changeset
337 struct { \
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diff changeset
338 struct type *sqx_next; /* next element */ \
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339 }
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340
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diff changeset
341 /*
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Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
342 * XOR Simple queue access methods.
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Guido Berhoerster <guido+pwm@berhoerster.name>
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diff changeset
343 */
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Guido Berhoerster <guido+pwm@berhoerster.name>
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diff changeset
344 #define XSIMPLEQ_XOR(head, ptr) ((__typeof(ptr))((head)->sqx_cookie ^ \
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diff changeset
345 (unsigned long)(ptr)))
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diff changeset
346 #define XSIMPLEQ_FIRST(head) XSIMPLEQ_XOR(head, ((head)->sqx_first))
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diff changeset
347 #define XSIMPLEQ_END(head) NULL
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diff changeset
348 #define XSIMPLEQ_EMPTY(head) (XSIMPLEQ_FIRST(head) == XSIMPLEQ_END(head))
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diff changeset
349 #define XSIMPLEQ_NEXT(head, elm, field) XSIMPLEQ_XOR(head, ((elm)->field.sqx_next))
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diff changeset
350
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diff changeset
351
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diff changeset
352 #define XSIMPLEQ_FOREACH(var, head, field) \
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diff changeset
353 for ((var) = XSIMPLEQ_FIRST(head); \
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Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
354 (var) != XSIMPLEQ_END(head); \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
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diff changeset
355 (var) = XSIMPLEQ_NEXT(head, var, field))
a08ef0674d8e Page long output in interactive mode
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parents:
diff changeset
356
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diff changeset
357 #define XSIMPLEQ_FOREACH_SAFE(var, head, field, tvar) \
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diff changeset
358 for ((var) = XSIMPLEQ_FIRST(head); \
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Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
359 (var) && ((tvar) = XSIMPLEQ_NEXT(head, var, field), 1); \
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Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
360 (var) = (tvar))
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parents:
diff changeset
361
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
362 /*
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Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
363 * XOR Simple queue functions.
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
364 */
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diff changeset
365 #define XSIMPLEQ_INIT(head) do { \
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Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
366 arc4random_buf(&(head)->sqx_cookie, sizeof((head)->sqx_cookie)); \
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Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
367 (head)->sqx_first = XSIMPLEQ_XOR(head, NULL); \
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Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
368 (head)->sqx_last = XSIMPLEQ_XOR(head, &(head)->sqx_first); \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
369 } while (0)
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parents:
diff changeset
370
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Guido Berhoerster <guido+pwm@berhoerster.name>
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diff changeset
371 #define XSIMPLEQ_INSERT_HEAD(head, elm, field) do { \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
372 if (((elm)->field.sqx_next = (head)->sqx_first) == \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
373 XSIMPLEQ_XOR(head, NULL)) \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
374 (head)->sqx_last = XSIMPLEQ_XOR(head, &(elm)->field.sqx_next); \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
375 (head)->sqx_first = XSIMPLEQ_XOR(head, (elm)); \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
376 } while (0)
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parents:
diff changeset
377
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
378 #define XSIMPLEQ_INSERT_TAIL(head, elm, field) do { \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
379 (elm)->field.sqx_next = XSIMPLEQ_XOR(head, NULL); \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
380 *(XSIMPLEQ_XOR(head, (head)->sqx_last)) = XSIMPLEQ_XOR(head, (elm)); \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
381 (head)->sqx_last = XSIMPLEQ_XOR(head, &(elm)->field.sqx_next); \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
382 } while (0)
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
383
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
384 #define XSIMPLEQ_INSERT_AFTER(head, listelm, elm, field) do { \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
385 if (((elm)->field.sqx_next = (listelm)->field.sqx_next) == \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
386 XSIMPLEQ_XOR(head, NULL)) \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
387 (head)->sqx_last = XSIMPLEQ_XOR(head, &(elm)->field.sqx_next); \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
388 (listelm)->field.sqx_next = XSIMPLEQ_XOR(head, (elm)); \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
389 } while (0)
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
390
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
391 #define XSIMPLEQ_REMOVE_HEAD(head, field) do { \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
392 if (((head)->sqx_first = XSIMPLEQ_XOR(head, \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
393 (head)->sqx_first)->field.sqx_next) == XSIMPLEQ_XOR(head, NULL)) \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
394 (head)->sqx_last = XSIMPLEQ_XOR(head, &(head)->sqx_first); \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
395 } while (0)
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
396
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
397 #define XSIMPLEQ_REMOVE_AFTER(head, elm, field) do { \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
398 if (((elm)->field.sqx_next = XSIMPLEQ_XOR(head, \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
399 (elm)->field.sqx_next)->field.sqx_next) \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
400 == XSIMPLEQ_XOR(head, NULL)) \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
401 (head)->sqx_last = \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
402 XSIMPLEQ_XOR(head, &(elm)->field.sqx_next); \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
403 } while (0)
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
404
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
405
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
406 /*
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
407 * Tail queue definitions.
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
408 */
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
409 #define TAILQ_HEAD(name, type) \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
410 struct name { \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
411 struct type *tqh_first; /* first element */ \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
412 struct type **tqh_last; /* addr of last next element */ \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
413 }
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
414
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
415 #define TAILQ_HEAD_INITIALIZER(head) \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
416 { NULL, &(head).tqh_first }
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
417
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
418 #define TAILQ_ENTRY(type) \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
419 struct { \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
420 struct type *tqe_next; /* next element */ \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
421 struct type **tqe_prev; /* address of previous next element */ \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
422 }
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
423
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
424 /*
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
425 * Tail queue access methods.
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
426 */
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
427 #define TAILQ_FIRST(head) ((head)->tqh_first)
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
428 #define TAILQ_END(head) NULL
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
429 #define TAILQ_NEXT(elm, field) ((elm)->field.tqe_next)
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
430 #define TAILQ_LAST(head, headname) \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
431 (*(((struct headname *)((head)->tqh_last))->tqh_last))
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
432 /* XXX */
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
433 #define TAILQ_PREV(elm, headname, field) \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
434 (*(((struct headname *)((elm)->field.tqe_prev))->tqh_last))
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
435 #define TAILQ_EMPTY(head) \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
436 (TAILQ_FIRST(head) == TAILQ_END(head))
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
437
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
438 #define TAILQ_FOREACH(var, head, field) \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
439 for((var) = TAILQ_FIRST(head); \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
440 (var) != TAILQ_END(head); \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
441 (var) = TAILQ_NEXT(var, field))
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
442
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
443 #define TAILQ_FOREACH_SAFE(var, head, field, tvar) \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
444 for ((var) = TAILQ_FIRST(head); \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
445 (var) != TAILQ_END(head) && \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
446 ((tvar) = TAILQ_NEXT(var, field), 1); \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
447 (var) = (tvar))
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
448
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
449
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
450 #define TAILQ_FOREACH_REVERSE(var, head, headname, field) \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
451 for((var) = TAILQ_LAST(head, headname); \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
452 (var) != TAILQ_END(head); \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
453 (var) = TAILQ_PREV(var, headname, field))
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
454
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
455 #define TAILQ_FOREACH_REVERSE_SAFE(var, head, headname, field, tvar) \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
456 for ((var) = TAILQ_LAST(head, headname); \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
457 (var) != TAILQ_END(head) && \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
458 ((tvar) = TAILQ_PREV(var, headname, field), 1); \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
459 (var) = (tvar))
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
460
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
461 /*
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
462 * Tail queue functions.
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
463 */
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
464 #define TAILQ_INIT(head) do { \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
465 (head)->tqh_first = NULL; \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
466 (head)->tqh_last = &(head)->tqh_first; \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
467 } while (0)
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
468
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
469 #define TAILQ_INSERT_HEAD(head, elm, field) do { \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
470 if (((elm)->field.tqe_next = (head)->tqh_first) != NULL) \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
471 (head)->tqh_first->field.tqe_prev = \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
472 &(elm)->field.tqe_next; \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
473 else \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
474 (head)->tqh_last = &(elm)->field.tqe_next; \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
475 (head)->tqh_first = (elm); \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
476 (elm)->field.tqe_prev = &(head)->tqh_first; \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
477 } while (0)
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
478
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
479 #define TAILQ_INSERT_TAIL(head, elm, field) do { \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
480 (elm)->field.tqe_next = NULL; \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
481 (elm)->field.tqe_prev = (head)->tqh_last; \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
482 *(head)->tqh_last = (elm); \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
483 (head)->tqh_last = &(elm)->field.tqe_next; \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
484 } while (0)
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
485
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
486 #define TAILQ_INSERT_AFTER(head, listelm, elm, field) do { \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
487 if (((elm)->field.tqe_next = (listelm)->field.tqe_next) != NULL)\
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
488 (elm)->field.tqe_next->field.tqe_prev = \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
489 &(elm)->field.tqe_next; \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
490 else \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
491 (head)->tqh_last = &(elm)->field.tqe_next; \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
492 (listelm)->field.tqe_next = (elm); \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
493 (elm)->field.tqe_prev = &(listelm)->field.tqe_next; \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
494 } while (0)
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
495
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
496 #define TAILQ_INSERT_BEFORE(listelm, elm, field) do { \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
497 (elm)->field.tqe_prev = (listelm)->field.tqe_prev; \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
498 (elm)->field.tqe_next = (listelm); \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
499 *(listelm)->field.tqe_prev = (elm); \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
500 (listelm)->field.tqe_prev = &(elm)->field.tqe_next; \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
501 } while (0)
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
502
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
503 #define TAILQ_REMOVE(head, elm, field) do { \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
504 if (((elm)->field.tqe_next) != NULL) \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
505 (elm)->field.tqe_next->field.tqe_prev = \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
506 (elm)->field.tqe_prev; \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
507 else \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
508 (head)->tqh_last = (elm)->field.tqe_prev; \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
509 *(elm)->field.tqe_prev = (elm)->field.tqe_next; \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
510 _Q_INVALIDATE((elm)->field.tqe_prev); \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
511 _Q_INVALIDATE((elm)->field.tqe_next); \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
512 } while (0)
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
513
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
514 #define TAILQ_REPLACE(head, elm, elm2, field) do { \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
515 if (((elm2)->field.tqe_next = (elm)->field.tqe_next) != NULL) \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
516 (elm2)->field.tqe_next->field.tqe_prev = \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
517 &(elm2)->field.tqe_next; \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
518 else \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
519 (head)->tqh_last = &(elm2)->field.tqe_next; \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
520 (elm2)->field.tqe_prev = (elm)->field.tqe_prev; \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
521 *(elm2)->field.tqe_prev = (elm2); \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
522 _Q_INVALIDATE((elm)->field.tqe_prev); \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
523 _Q_INVALIDATE((elm)->field.tqe_next); \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
524 } while (0)
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
525
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
526 #define TAILQ_CONCAT(head1, head2, field) do { \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
527 if (!TAILQ_EMPTY(head2)) { \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
528 *(head1)->tqh_last = (head2)->tqh_first; \
a08ef0674d8e Page long output in interactive mode
Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
diff changeset
529 (head2)->tqh_first->field.tqe_prev = (head1)->tqh_last; \
a08ef0674d8e Page long output in interactive mode
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parents:
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530 (head1)->tqh_last = (head2)->tqh_last; \
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Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
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531 TAILQ_INIT((head2)); \
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Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
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532 } \
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parents:
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533 } while (0)
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Guido Berhoerster <guido+pwm@berhoerster.name>
parents:
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534
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parents:
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535 #endif /* !_SYS_QUEUE_H_ */