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96 lines
2.8 KiB
C
96 lines
2.8 KiB
C
/*
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Copyright © 1998. The Regents of the University of California (Regents).
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All Rights Reserved.
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Written by Matt Wright, The Center for New Music and Audio Technologies,
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University of California, Berkeley.
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Permission to use, copy, modify, distribute, and distribute modified versions
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of this software and its documentation without fee and without a signed
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licensing agreement, is hereby granted, provided that the above copyright
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notice, this paragraph and the following two paragraphs appear in all copies,
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modifications, and distributions.
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IN NO EVENT SHALL REGENTS BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT,
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SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS, ARISING
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OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF REGENTS HAS
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BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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REGENTS SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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PURPOSE. THE SOFTWARE AND ACCOMPANYING DOCUMENTATION, IF ANY, PROVIDED
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HEREUNDER IS PROVIDED "AS IS". REGENTS HAS NO OBLIGATION TO PROVIDE
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MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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The OpenSound Control WWW page is
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http://www.cnmat.berkeley.edu/OpenSoundControl
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*/
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/*
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OSC-callbacklist.c
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Linked lists of methods
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Matt Wright, 11/20/97
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Allocator is a simple linked list of free nodes.
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*/
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#include <libOSC/OSC-common.h>
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#include <libOSC/OSC-timetag.h>
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#include <libOSC/OSC-address-space.h>
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#include <libOSC/OSC-dispatch.h>
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#include <libOSC/OSC-callbacklist.h>
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static callbackList allNodes;
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static callbackList freeNodes;
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/* Call this before you call anything else */
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Boolean InitCallbackListNodes(int numNodes, void *(*InitTimeMalloc)(int numBytes)) {
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int i;
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allNodes = (*InitTimeMalloc)(numNodes * sizeof(*allNodes));
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if (allNodes == 0) return FALSE;
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/* Initialize list of freeNodes */
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freeNodes = &(allNodes[0]);
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for (i = 0; i < numNodes-1; ++i) {
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allNodes[i].next = &(allNodes[i+1]);
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}
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allNodes[numNodes-1].next = 0;
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return TRUE;
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}
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callbackList AllocCallbackListNode(methodCallback callback, void *context,
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struct callbackListNode *next) {
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callbackList result;
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if (freeNodes == 0) {
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/* OSCProblem("Out of memory for callback lists!"); */
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return 0;
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}
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result = freeNodes;
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freeNodes = freeNodes->next;
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result->callback = callback;
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result->context = context;
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result->next = next;
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#ifdef DEBUG_CBL
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printf("AllocCallbackListNode: returning %p (cb %p, context %p, next %p)\n",
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result, result->callback, result->context, result->next);
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#endif
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return result;
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}
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void FreeCallbackListNode(callbackList cb) {
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#ifdef DEBUG_CBL
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printf("FreeCallbackListNode(%p)\n", cb);
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#endif
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cb->next = freeNodes;
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freeNodes = cb;
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}
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