99 lines
No EOL
1.9 KiB
C
99 lines
No EOL
1.9 KiB
C
/*
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* This software is licensed under the terms of the MIT-License
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* See COPYING for further information.
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* ---
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* Copyright (C) 2011, Lukas Weber <laochailan@web.de>
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*/
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#include "list.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include "global.h"
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typedef struct {
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void *next;
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void *prev;
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} List;
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void *_FREEREF;
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void *create_element(void **dest, int size) {
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void *e = malloc(size);
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((List *)e)->prev = NULL;
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((List *)e)->next = *dest;
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if(*dest != NULL)
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((List *)(*dest))->prev = e;
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*dest = e;
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return e;
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}
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void delete_element(void **dest, void *e) {
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if(((List *)e)->prev != NULL)
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((List *)((List *)e)->prev)->next = ((List *)e)->next;
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if(((List *)e)->next != NULL)
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((List *)((List *)e)->next)->prev = ((List *)e)->prev;
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if(*dest == e)
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*dest = ((List *)e)->next;
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free(e);
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}
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void delete_all_elements(void **dest, void (callback)(void **, void *)) {
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void *e = *dest;
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void *tmp;
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while(e != 0) {
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tmp = e;
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e = ((List *)e)->next;
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callback(dest, tmp);
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}
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*dest = NULL;
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}
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int add_ref(void *ptr) {
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int i;
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for(i = 0; i < global.refs.count; i++) {
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if(global.refs.ptrs[i].ptr == ptr) {
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global.refs.ptrs[i].refs++;
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return i;
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}
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}
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for(i = 0; i < global.refs.count; i++) {
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if(global.refs.ptrs[i].ptr == FREEREF) {
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global.refs.ptrs[i].ptr = ptr;
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global.refs.ptrs[i].refs = 1;
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return i;
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}
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}
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global.refs.ptrs = realloc(global.refs.ptrs, (++global.refs.count)*sizeof(Reference));
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global.refs.ptrs[global.refs.count - 1].ptr = ptr;
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global.refs.ptrs[global.refs.count - 1].refs = 1;
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return global.refs.count - 1;
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}
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void del_ref(void *ptr) {
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int i;
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for(i = 0; i < global.refs.count; i++)
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if(global.refs.ptrs[i].ptr == ptr)
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global.refs.ptrs[i].ptr = NULL;
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}
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void free_ref(int i) {
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if(i < 0)
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return;
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global.refs.ptrs[i].refs--;
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if(global.refs.ptrs[i].refs <= 0) {
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global.refs.ptrs[i].ptr = FREEREF;
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global.refs.ptrs[i].refs = 0;
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}
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} |