7b50c38cc8
This modifies cogl-queue.h so that:- - Everything is in a COGL_* namespace - It assumes there is a typedef for all of the types instead of requiring the code to use struct WhateverType. - It doesn't contain any tabs https://bugzilla.gnome.org/show_bug.cgi?id=652514
648 lines
32 KiB
C
648 lines
32 KiB
C
/*-
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* Copyright (c) 1991, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Copyright (C) 2011 Intel Corporation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)queue.h 8.5 (Berkeley) 8/20/94
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* $FreeBSD$
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*/
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#ifndef _COGL_QUEUE_H_
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#define _COGL_QUEUE_H_
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/*
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* This file defines four types of data structures: singly-linked lists,
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* singly-linked tail queues, lists and tail queues.
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*
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* A singly-linked list is headed by a single forward pointer. The elements
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* are singly linked for minimum space and pointer manipulation overhead at
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* the expense of O(n) removal for arbitrary elements. New elements can be
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* added to the list after an existing element or at the head of the list.
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* Elements being removed from the head of the list should use the explicit
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* macro for this purpose for optimum efficiency. A singly-linked list may
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* only be traversed in the forward direction. Singly-linked lists are ideal
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* for applications with large datasets and few or no removals or for
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* implementing a LIFO queue.
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*
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* A singly-linked tail queue is headed by a pair of pointers, one to the
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* head of the list and the other to the tail of the list. The elements are
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* singly linked for minimum space and pointer manipulation overhead at the
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* expense of O(n) removal for arbitrary elements. New elements can be added
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* to the list after an existing element, at the head of the list, or at the
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* end of the list. Elements being removed from the head of the tail queue
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* should use the explicit macro for this purpose for optimum efficiency.
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* A singly-linked tail queue may only be traversed in the forward direction.
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* Singly-linked tail queues are ideal for applications with large datasets
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* and few or no removals or for implementing a FIFO queue.
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*
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* A list is headed by a single forward pointer (or an array of forward
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* pointers for a hash table header). The elements are doubly linked
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* so that an arbitrary element can be removed without a need to
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* traverse the list. New elements can be added to the list before
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* or after an existing element or at the head of the list. A list
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* may only be traversed in the forward direction.
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*
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* A tail queue is headed by a pair of pointers, one to the head of the
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* list and the other to the tail of the list. The elements are doubly
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* linked so that an arbitrary element can be removed without a need to
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* traverse the list. New elements can be added to the list before or
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* after an existing element, at the head of the list, or at the end of
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* the list. A tail queue may be traversed in either direction.
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*
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* For details on the use of these macros, see the queue(3) manual page.
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*
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*
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* SLIST LIST STAILQ TAILQ
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* _HEAD + + + +
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* _HEAD_INITIALIZER + + + +
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* _ENTRY + + + +
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* _INIT + + + +
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* _EMPTY + + + +
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* _FIRST + + + +
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* _NEXT + + + +
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* _PREV - - - +
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* _LAST - - + +
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* _FOREACH + + + +
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* _FOREACH_SAFE + + + +
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* _FOREACH_REVERSE - - - +
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* _FOREACH_REVERSE_SAFE - - - +
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* _INSERT_HEAD + + + +
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* _INSERT_BEFORE - + - +
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* _INSERT_AFTER + + + +
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* _INSERT_TAIL - - + +
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* _CONCAT - - + +
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* _REMOVE_AFTER + - + -
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* _REMOVE_HEAD + - + -
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* _REMOVE + + + +
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* _SWAP + + + +
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*
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*/
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#ifdef COGL_QUEUE_MACRO_DEBUG
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/* Store the last 2 places the queue element or head was altered */
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struct cogl_qm_trace {
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char * lastfile;
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int lastline;
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char * prevfile;
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int prevline;
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};
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#define COGL_TRACEBUF struct cogl_qm_trace trace;
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#define COGL_TRASHIT(x) do {(x) = (void *)-1;} while (0)
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#define COGL_QMD_SAVELINK(name, link) void **name = (void *)&(link)
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#define COGL_QMD_TRACE_HEAD(head) do { \
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(head)->trace.prevline = (head)->trace.lastline; \
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(head)->trace.prevfile = (head)->trace.lastfile; \
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(head)->trace.lastline = __LINE__; \
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(head)->trace.lastfile = __FILE__; \
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} while (0)
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#define COGL_QMD_TRACE_ELEM(elem) do { \
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(elem)->trace.prevline = (elem)->trace.lastline; \
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(elem)->trace.prevfile = (elem)->trace.lastfile; \
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(elem)->trace.lastline = __LINE__; \
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(elem)->trace.lastfile = __FILE__; \
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} while (0)
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#else
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#define COGL_QMD_TRACE_ELEM(elem)
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#define COGL_QMD_TRACE_HEAD(head)
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#define COGL_QMD_SAVELINK(name, link)
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#define COGL_TRACEBUF
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#define COGL_TRASHIT(x)
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#endif /* COGL_QUEUE_MACRO_DEBUG */
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/*
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* Singly-linked List declarations.
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*/
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#define COGL_SLIST_HEAD(name, type) \
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typedef struct _ ## name { \
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type *slh_first; /* first element */ \
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} name
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#define COGL_SLIST_HEAD_INITIALIZER(head) \
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{ NULL }
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#define COGL_SLIST_ENTRY(type) \
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struct { \
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type *sle_next; /* next element */ \
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}
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/*
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* Singly-linked List functions.
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*/
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#define COGL_SLIST_EMPTY(head) ((head)->slh_first == NULL)
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#define COGL_SLIST_FIRST(head) ((head)->slh_first)
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#define COGL_SLIST_FOREACH(var, head, field) \
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for ((var) = COGL_SLIST_FIRST((head)); \
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(var); \
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(var) = COGL_SLIST_NEXT((var), field))
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#define COGL_SLIST_FOREACH_SAFE(var, head, field, tvar) \
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for ((var) = COGL_SLIST_FIRST((head)); \
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(var) && ((tvar) = COGL_SLIST_NEXT((var), field), 1); \
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(var) = (tvar))
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#define COGL_SLIST_FOREACH_PREVPTR(var, varp, head, field) \
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for ((varp) = &COGL_SLIST_FIRST((head)); \
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((var) = *(varp)) != NULL; \
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(varp) = &COGL_SLIST_NEXT((var), field))
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#define COGL_SLIST_INIT(head) do { \
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COGL_SLIST_FIRST((head)) = NULL; \
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} while (0)
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#define COGL_SLIST_INSERT_AFTER(slistelm, elm, field) do { \
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COGL_SLIST_NEXT((elm), field) = COGL_SLIST_NEXT((slistelm), field); \
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COGL_SLIST_NEXT((slistelm), field) = (elm); \
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} while (0)
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#define COGL_SLIST_INSERT_HEAD(head, elm, field) do { \
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COGL_SLIST_NEXT((elm), field) = COGL_SLIST_FIRST((head)); \
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COGL_SLIST_FIRST((head)) = (elm); \
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} while (0)
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#define COGL_SLIST_NEXT(elm, field) ((elm)->field.sle_next)
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#define COGL_SLIST_REMOVE(head, elm, type, field) do { \
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COGL_QMD_SAVELINK(oldnext, (elm)->field.sle_next); \
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if (COGL_SLIST_FIRST((head)) == (elm)) { \
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COGL_SLIST_REMOVE_HEAD((head), field); \
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} \
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else { \
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type *curelm = COGL_SLIST_FIRST((head)); \
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while (COGL_SLIST_NEXT(curelm, field) != (elm)) \
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curelm = COGL_SLIST_NEXT(curelm, field); \
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COGL_SLIST_REMOVE_AFTER(curelm, field); \
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} \
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COGL_TRASHIT(*oldnext); \
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} while (0)
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#define COGL_SLIST_REMOVE_AFTER(elm, field) do { \
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COGL_SLIST_NEXT(elm, field) = \
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COGL_SLIST_NEXT(COGL_SLIST_NEXT(elm, field), field); \
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} while (0)
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#define COGL_SLIST_REMOVE_HEAD(head, field) do { \
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COGL_SLIST_FIRST((head)) = \
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COGL_SLIST_NEXT(COGL_SLIST_FIRST((head)), field); \
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} while (0)
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#define COGL_SLIST_SWAP(head1, head2, type) do { \
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type *swap_first = COGL_SLIST_FIRST(head1); \
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COGL_SLIST_FIRST(head1) = COGL_SLIST_FIRST(head2); \
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COGL_SLIST_FIRST(head2) = swap_first; \
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} while (0)
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/*
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* Singly-linked Tail queue declarations.
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*/
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#define COGL_STAILQ_HEAD(name, type) \
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typedef struct _ ## name { \
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type *stqh_first;/* first element */ \
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type **stqh_last;/* addr of last next element */ \
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} name
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#define COGL_STAILQ_HEAD_INITIALIZER(head) \
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{ NULL, &(head).stqh_first }
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#define COGL_STAILQ_ENTRY(type) \
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struct { \
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type *stqe_next; /* next element */ \
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}
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/*
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* Singly-linked Tail queue functions.
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*/
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#define COGL_STAILQ_CONCAT(head1, head2) do { \
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if (!COGL_STAILQ_EMPTY((head2))) { \
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*(head1)->stqh_last = (head2)->stqh_first; \
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(head1)->stqh_last = (head2)->stqh_last; \
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COGL_STAILQ_INIT((head2)); \
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} \
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} while (0)
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#define COGL_STAILQ_EMPTY(head) ((head)->stqh_first == NULL)
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#define COGL_STAILQ_FIRST(head) ((head)->stqh_first)
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#define COGL_STAILQ_FOREACH(var, head, field) \
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for((var) = COGL_STAILQ_FIRST((head)); \
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(var); \
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(var) = COGL_STAILQ_NEXT((var), field))
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#define COGL_STAILQ_FOREACH_SAFE(var, head, field, tvar) \
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for ((var) = COGL_STAILQ_FIRST((head)); \
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(var) && ((tvar) = COGL_STAILQ_NEXT((var), field), 1); \
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(var) = (tvar))
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#define COGL_STAILQ_INIT(head) do { \
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COGL_STAILQ_FIRST((head)) = NULL; \
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(head)->stqh_last = &COGL_STAILQ_FIRST((head)); \
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} while (0)
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#define COGL_STAILQ_INSERT_AFTER(head, tqelm, elm, field) do { \
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if ((COGL_STAILQ_NEXT((elm), field) = \
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COGL_STAILQ_NEXT((tqelm), field)) == NULL) \
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(head)->stqh_last = &COGL_STAILQ_NEXT((elm), field); \
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COGL_STAILQ_NEXT((tqelm), field) = (elm); \
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} while (0)
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#define COGL_STAILQ_INSERT_HEAD(head, elm, field) do { \
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if ((COGL_STAILQ_NEXT((elm), field) = \
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COGL_STAILQ_FIRST((head))) == NULL) \
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(head)->stqh_last = &COGL_STAILQ_NEXT((elm), field); \
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COGL_STAILQ_FIRST((head)) = (elm); \
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} while (0)
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#define COGL_STAILQ_INSERT_TAIL(head, elm, field) do { \
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COGL_STAILQ_NEXT((elm), field) = NULL; \
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*(head)->stqh_last = (elm); \
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(head)->stqh_last = &COGL_STAILQ_NEXT((elm), field); \
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} while (0)
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#define COGL_STAILQ_LAST(head, type, field) \
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(COGL_STAILQ_EMPTY((head)) ? \
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NULL : \
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((type *)(void *) \
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((char *)((head)->stqh_last) - \
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__offsetof(struct type, field))))
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#define COGL_STAILQ_NEXT(elm, field) ((elm)->field.stqe_next)
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#define COGL_STAILQ_REMOVE(head, elm, type, field) do { \
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COGL_QMD_SAVELINK(oldnext, (elm)->field.stqe_next); \
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if (COGL_STAILQ_FIRST((head)) == (elm)) { \
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COGL_STAILQ_REMOVE_HEAD((head), field); \
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} \
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else { \
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type *curelm = COGL_STAILQ_FIRST((head)); \
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while (COGL_STAILQ_NEXT(curelm, field) != (elm)) \
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curelm = COGL_STAILQ_NEXT(curelm, field); \
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COGL_STAILQ_REMOVE_AFTER(head, curelm, field); \
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} \
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COGL_TRASHIT(*oldnext); \
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} while (0)
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#define COGL_STAILQ_REMOVE_AFTER(head, elm, field) do { \
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if ((COGL_STAILQ_NEXT(elm, field) = \
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COGL_STAILQ_NEXT(COGL_STAILQ_NEXT(elm, field), \
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field)) == NULL) \
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(head)->stqh_last = &COGL_STAILQ_NEXT((elm), field); \
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} while (0)
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#define COGL_STAILQ_REMOVE_HEAD(head, field) do { \
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if ((COGL_STAILQ_FIRST((head)) = \
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COGL_STAILQ_NEXT(COGL_STAILQ_FIRST((head)), field)) == NULL) \
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(head)->stqh_last = &COGL_STAILQ_FIRST((head)); \
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} while (0)
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#define COGL_STAILQ_SWAP(head1, head2, type) do { \
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type *swap_first = COGL_STAILQ_FIRST(head1); \
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type **swap_last = (head1)->stqh_last; \
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COGL_STAILQ_FIRST(head1) = COGL_STAILQ_FIRST(head2); \
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(head1)->stqh_last = (head2)->stqh_last; \
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COGL_STAILQ_FIRST(head2) = swap_first; \
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(head2)->stqh_last = swap_last; \
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if (COGL_STAILQ_EMPTY(head1)) \
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(head1)->stqh_last = &COGL_STAILQ_FIRST(head1); \
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if (COGL_STAILQ_EMPTY(head2)) \
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(head2)->stqh_last = &COGL_STAILQ_FIRST(head2); \
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} while (0)
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/*
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* List declarations.
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*/
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#define COGL_LIST_HEAD(name, type) \
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typedef struct _ ## name { \
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type *lh_first; /* first element */ \
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} name
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#define COGL_LIST_HEAD_INITIALIZER(head) \
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{ NULL }
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#define COGL_LIST_ENTRY(type) \
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struct { \
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type *le_next; /* next element */ \
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type **le_prev; /* address of previous next element */ \
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}
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/*
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* List functions.
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*/
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#if (defined(_KERNEL) && defined(INVARIANTS))
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#define COGL_QMD_LIST_CHECK_HEAD(head, field) do { \
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if (COGL_LIST_FIRST((head)) != NULL && \
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COGL_LIST_FIRST((head))->field.le_prev != \
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&COGL_LIST_FIRST((head))) \
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panic("Bad list head %p first->prev != head", (head)); \
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} while (0)
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#define COGL_QMD_LIST_CHECK_NEXT(elm, field) do { \
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if (COGL_LIST_NEXT((elm), field) != NULL && \
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COGL_LIST_NEXT((elm), field)->field.le_prev != \
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&((elm)->field.le_next)) \
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panic("Bad link elm %p next->prev != elm", (elm)); \
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} while (0)
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#define COGL_QMD_LIST_CHECK_PREV(elm, field) do { \
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if (*(elm)->field.le_prev != (elm)) \
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panic("Bad link elm %p prev->next != elm", (elm)); \
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} while (0)
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#else
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#define COGL_QMD_LIST_CHECK_HEAD(head, field)
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#define COGL_QMD_LIST_CHECK_NEXT(elm, field)
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#define COGL_QMD_LIST_CHECK_PREV(elm, field)
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#endif /* (_KERNEL && INVARIANTS) */
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#define COGL_LIST_EMPTY(head) ((head)->lh_first == NULL)
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#define COGL_LIST_FIRST(head) ((head)->lh_first)
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#define COGL_LIST_FOREACH(var, head, field) \
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for ((var) = COGL_LIST_FIRST((head)); \
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(var); \
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(var) = COGL_LIST_NEXT((var), field))
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#define COGL_LIST_FOREACH_SAFE(var, head, field, tvar) \
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for ((var) = COGL_LIST_FIRST((head)); \
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(var) && ((tvar) = COGL_LIST_NEXT((var), field), 1); \
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(var) = (tvar))
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#define COGL_LIST_INIT(head) do { \
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COGL_LIST_FIRST((head)) = NULL; \
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} while (0)
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#define COGL_LIST_INSERT_AFTER(listelm, elm, field) do { \
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COGL_QMD_LIST_CHECK_NEXT(listelm, field); \
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if ((COGL_LIST_NEXT((elm), field) = \
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COGL_LIST_NEXT((listelm), field)) != NULL) \
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COGL_LIST_NEXT((listelm), field)->field.le_prev = \
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&COGL_LIST_NEXT((elm), field); \
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COGL_LIST_NEXT((listelm), field) = (elm); \
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(elm)->field.le_prev = &COGL_LIST_NEXT((listelm), field); \
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} while (0)
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#define COGL_LIST_INSERT_BEFORE(listelm, elm, field) do { \
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COGL_QMD_LIST_CHECK_PREV(listelm, field); \
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(elm)->field.le_prev = (listelm)->field.le_prev; \
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COGL_LIST_NEXT((elm), field) = (listelm); \
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*(listelm)->field.le_prev = (elm); \
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(listelm)->field.le_prev = &COGL_LIST_NEXT((elm), field); \
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} while (0)
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#define COGL_LIST_INSERT_HEAD(head, elm, field) do { \
|
|
COGL_QMD_LIST_CHECK_HEAD((head), field); \
|
|
if ((COGL_LIST_NEXT((elm), field) = \
|
|
COGL_LIST_FIRST((head))) != NULL) \
|
|
COGL_LIST_FIRST((head))->field.le_prev = \
|
|
&COGL_LIST_NEXT((elm), field); \
|
|
COGL_LIST_FIRST((head)) = (elm); \
|
|
(elm)->field.le_prev = &COGL_LIST_FIRST((head)); \
|
|
} while (0)
|
|
|
|
#define COGL_LIST_NEXT(elm, field) ((elm)->field.le_next)
|
|
|
|
#define COGL_LIST_REMOVE(elm, field) do { \
|
|
COGL_QMD_SAVELINK(oldnext, (elm)->field.le_next); \
|
|
COGL_QMD_SAVELINK(oldprev, (elm)->field.le_prev); \
|
|
COGL_QMD_LIST_CHECK_NEXT(elm, field); \
|
|
COGL_QMD_LIST_CHECK_PREV(elm, field); \
|
|
if (COGL_LIST_NEXT((elm), field) != NULL) \
|
|
COGL_LIST_NEXT((elm), field)->field.le_prev = \
|
|
(elm)->field.le_prev; \
|
|
*(elm)->field.le_prev = COGL_LIST_NEXT((elm), field); \
|
|
COGL_TRASHIT(*oldnext); \
|
|
COGL_TRASHIT(*oldprev); \
|
|
} while (0)
|
|
|
|
#define COGL_LIST_SWAP(head1, head2, type, field) do { \
|
|
type *swap_tmp = COGL_LIST_FIRST((head1)); \
|
|
COGL_LIST_FIRST((head1)) = COGL_LIST_FIRST((head2)); \
|
|
COGL_LIST_FIRST((head2)) = swap_tmp; \
|
|
if ((swap_tmp = COGL_LIST_FIRST((head1))) != NULL) \
|
|
swap_tmp->field.le_prev = &COGL_LIST_FIRST((head1)); \
|
|
if ((swap_tmp = COGL_LIST_FIRST((head2))) != NULL) \
|
|
swap_tmp->field.le_prev = &COGL_LIST_FIRST((head2)); \
|
|
} while (0)
|
|
|
|
/*
|
|
* Tail queue declarations.
|
|
*/
|
|
#define COGL_TAILQ_HEAD(name, type) \
|
|
typedef struct _ ## name { \
|
|
type *tqh_first; /* first element */ \
|
|
type **tqh_last; /* addr of last next element */ \
|
|
COGL_TRACEBUF \
|
|
} name
|
|
|
|
#define COGL_TAILQ_HEAD_INITIALIZER(head) \
|
|
{ NULL, &(head).tqh_first }
|
|
|
|
#define COGL_TAILQ_ENTRY(type) \
|
|
struct { \
|
|
type *tqe_next; /* next element */ \
|
|
type **tqe_prev; /* address of previous next element */ \
|
|
COGL_TRACEBUF \
|
|
}
|
|
|
|
/*
|
|
* Tail queue functions.
|
|
*/
|
|
#if (defined(_KERNEL) && defined(INVARIANTS))
|
|
#define COGL_QMD_TAILQ_CHECK_HEAD(head, field) do { \
|
|
if (!COGL_TAILQ_EMPTY(head) && \
|
|
COGL_TAILQ_FIRST((head))->field.tqe_prev != \
|
|
&COGL_TAILQ_FIRST((head))) \
|
|
panic("Bad tailq head %p first->prev != head", (head)); \
|
|
} while (0)
|
|
|
|
#define COGL_QMD_TAILQ_CHECK_TAIL(head, field) do { \
|
|
if (*(head)->tqh_last != NULL) \
|
|
panic("Bad tailq NEXT(%p->tqh_last) != NULL", (head)); \
|
|
} while (0)
|
|
|
|
#define COGL_QMD_TAILQ_CHECK_NEXT(elm, field) do { \
|
|
if (COGL_TAILQ_NEXT((elm), field) != NULL && \
|
|
COGL_TAILQ_NEXT((elm), field)->field.tqe_prev != \
|
|
&((elm)->field.tqe_next)) \
|
|
panic("Bad link elm %p next->prev != elm", (elm)); \
|
|
} while (0)
|
|
|
|
#define COGL_QMD_TAILQ_CHECK_PREV(elm, field) do { \
|
|
if (*(elm)->field.tqe_prev != (elm)) \
|
|
panic("Bad link elm %p prev->next != elm", (elm)); \
|
|
} while (0)
|
|
#else
|
|
#define COGL_QMD_TAILQ_CHECK_HEAD(head, field)
|
|
#define COGL_QMD_TAILQ_CHECK_TAIL(head, headname)
|
|
#define COGL_QMD_TAILQ_CHECK_NEXT(elm, field)
|
|
#define COGL_QMD_TAILQ_CHECK_PREV(elm, field)
|
|
#endif /* (_KERNEL && INVARIANTS) */
|
|
|
|
#define COGL_TAILQ_CONCAT(head1, head2, field) do { \
|
|
if (!COGL_TAILQ_EMPTY(head2)) { \
|
|
*(head1)->tqh_last = (head2)->tqh_first; \
|
|
(head2)->tqh_first->field.tqe_prev = (head1)->tqh_last; \
|
|
(head1)->tqh_last = (head2)->tqh_last; \
|
|
COGL_TAILQ_INIT((head2)); \
|
|
COGL_QMD_TRACE_HEAD(head1); \
|
|
COGL_QMD_TRACE_HEAD(head2); \
|
|
} \
|
|
} while (0)
|
|
|
|
#define COGL_TAILQ_EMPTY(head) ((head)->tqh_first == NULL)
|
|
|
|
#define COGL_TAILQ_FIRST(head) ((head)->tqh_first)
|
|
|
|
#define COGL_TAILQ_FOREACH(var, head, field) \
|
|
for ((var) = COGL_TAILQ_FIRST((head)); \
|
|
(var); \
|
|
(var) = COGL_TAILQ_NEXT((var), field))
|
|
|
|
#define COGL_TAILQ_FOREACH_SAFE(var, head, field, tvar) \
|
|
for ((var) = COGL_TAILQ_FIRST((head)); \
|
|
(var) && ((tvar) = COGL_TAILQ_NEXT((var), field), 1); \
|
|
(var) = (tvar))
|
|
|
|
#define COGL_TAILQ_FOREACH_REVERSE(var, head, headname, field) \
|
|
for ((var) = COGL_TAILQ_LAST((head), headname); \
|
|
(var); \
|
|
(var) = COGL_TAILQ_PREV((var), headname, field))
|
|
|
|
#define COGL_TAILQ_FOREACH_REVERSE_SAFE(var, head, headname, field, tvar) \
|
|
for ((var) = COGL_TAILQ_LAST((head), headname); \
|
|
(var) && ((tvar) = COGL_TAILQ_PREV((var), headname, field), 1); \
|
|
(var) = (tvar))
|
|
|
|
#define COGL_TAILQ_INIT(head) do { \
|
|
COGL_TAILQ_FIRST((head)) = NULL; \
|
|
(head)->tqh_last = &COGL_TAILQ_FIRST((head)); \
|
|
COGL_QMD_TRACE_HEAD(head); \
|
|
} while (0)
|
|
|
|
#define COGL_TAILQ_INSERT_AFTER(head, listelm, elm, field) do { \
|
|
COGL_QMD_TAILQ_CHECK_NEXT(listelm, field); \
|
|
if ((COGL_TAILQ_NEXT((elm), field) = \
|
|
COGL_TAILQ_NEXT((listelm), field)) != NULL) \
|
|
COGL_TAILQ_NEXT((elm), field)->field.tqe_prev = \
|
|
&COGL_TAILQ_NEXT((elm), field); \
|
|
else { \
|
|
(head)->tqh_last = &COGL_TAILQ_NEXT((elm), field); \
|
|
COGL_QMD_TRACE_HEAD(head); \
|
|
} \
|
|
COGL_TAILQ_NEXT((listelm), field) = (elm); \
|
|
(elm)->field.tqe_prev = &COGL_TAILQ_NEXT((listelm), field); \
|
|
COGL_QMD_TRACE_ELEM(&(elm)->field); \
|
|
COGL_QMD_TRACE_ELEM(&listelm->field); \
|
|
} while (0)
|
|
|
|
#define COGL_TAILQ_INSERT_BEFORE(listelm, elm, field) do { \
|
|
COGL_QMD_TAILQ_CHECK_PREV(listelm, field); \
|
|
(elm)->field.tqe_prev = (listelm)->field.tqe_prev; \
|
|
COGL_TAILQ_NEXT((elm), field) = (listelm); \
|
|
*(listelm)->field.tqe_prev = (elm); \
|
|
(listelm)->field.tqe_prev = &COGL_TAILQ_NEXT((elm), field); \
|
|
COGL_QMD_TRACE_ELEM(&(elm)->field); \
|
|
COGL_QMD_TRACE_ELEM(&listelm->field); \
|
|
} while (0)
|
|
|
|
#define COGL_TAILQ_INSERT_HEAD(head, elm, field) do { \
|
|
COGL_QMD_TAILQ_CHECK_HEAD(head, field); \
|
|
if ((COGL_TAILQ_NEXT((elm), field) = \
|
|
COGL_TAILQ_FIRST((head))) != NULL) \
|
|
COGL_TAILQ_FIRST((head))->field.tqe_prev = \
|
|
&COGL_TAILQ_NEXT((elm), field); \
|
|
else \
|
|
(head)->tqh_last = &COGL_TAILQ_NEXT((elm), field); \
|
|
COGL_TAILQ_FIRST((head)) = (elm); \
|
|
(elm)->field.tqe_prev = &COGL_TAILQ_FIRST((head)); \
|
|
COGL_QMD_TRACE_HEAD(head); \
|
|
COGL_QMD_TRACE_ELEM(&(elm)->field); \
|
|
} while (0)
|
|
|
|
#define COGL_TAILQ_INSERT_TAIL(head, elm, field) do { \
|
|
COGL_QMD_TAILQ_CHECK_TAIL(head, field); \
|
|
COGL_TAILQ_NEXT((elm), field) = NULL; \
|
|
(elm)->field.tqe_prev = (head)->tqh_last; \
|
|
*(head)->tqh_last = (elm); \
|
|
(head)->tqh_last = &COGL_TAILQ_NEXT((elm), field); \
|
|
COGL_QMD_TRACE_HEAD(head); \
|
|
COGL_QMD_TRACE_ELEM(&(elm)->field); \
|
|
} while (0)
|
|
|
|
#define COGL_TAILQ_LAST(head, headname) \
|
|
(*(((headname *)((head)->tqh_last))->tqh_last))
|
|
|
|
#define COGL_TAILQ_NEXT(elm, field) ((elm)->field.tqe_next)
|
|
|
|
#define COGL_TAILQ_PREV(elm, headname, field) \
|
|
(*(((headname *)((elm)->field.tqe_prev))->tqh_last))
|
|
|
|
#define COGL_TAILQ_REMOVE(head, elm, field) do { \
|
|
COGL_QMD_SAVELINK(oldnext, (elm)->field.tqe_next); \
|
|
COGL_QMD_SAVELINK(oldprev, (elm)->field.tqe_prev); \
|
|
COGL_QMD_TAILQ_CHECK_NEXT(elm, field); \
|
|
COGL_QMD_TAILQ_CHECK_PREV(elm, field); \
|
|
if ((COGL_TAILQ_NEXT((elm), field)) != NULL) \
|
|
COGL_TAILQ_NEXT((elm), field)->field.tqe_prev = \
|
|
(elm)->field.tqe_prev; \
|
|
else { \
|
|
(head)->tqh_last = (elm)->field.tqe_prev; \
|
|
COGL_QMD_TRACE_HEAD(head); \
|
|
} \
|
|
*(elm)->field.tqe_prev = COGL_TAILQ_NEXT((elm), field); \
|
|
COGL_TRASHIT(*oldnext); \
|
|
COGL_TRASHIT(*oldprev); \
|
|
COGL_QMD_TRACE_ELEM(&(elm)->field); \
|
|
} while (0)
|
|
|
|
#define COGL_TAILQ_SWAP(head1, head2, type, field) do { \
|
|
type *swap_first = (head1)->tqh_first; \
|
|
type **swap_last = (head1)->tqh_last; \
|
|
(head1)->tqh_first = (head2)->tqh_first; \
|
|
(head1)->tqh_last = (head2)->tqh_last; \
|
|
(head2)->tqh_first = swap_first; \
|
|
(head2)->tqh_last = swap_last; \
|
|
if ((swap_first = (head1)->tqh_first) != NULL) \
|
|
swap_first->field.tqe_prev = &(head1)->tqh_first; \
|
|
else \
|
|
(head1)->tqh_last = &(head1)->tqh_first; \
|
|
if ((swap_first = (head2)->tqh_first) != NULL) \
|
|
swap_first->field.tqe_prev = &(head2)->tqh_first; \
|
|
else \
|
|
(head2)->tqh_last = &(head2)->tqh_first; \
|
|
} while (0)
|
|
|
|
#endif /* !_COGL_QUEUE_H_ */
|