/* Shared Resource file 
 *
 * This file is copyright 2002 Jim Kent, but license is hereby
 * granted for all use - public, private or commercial. */

#ifndef SHARES_H
#define SHARES_H

struct shaResNode
/* A shared resource node. */
    {
    struct shaResNode *next;
    struct shaResNode *prev;
    int links;
    char *name;
    struct shaResList *list;
    void *data;
    };

struct shaResList
/* A shared resource list. */
    {
    struct shaResNode *head;
    void (*freeData)(void *pData);
    };


void shaUnlink(struct shaResNode *node);
/* Decrement link count and free if down to zero. */

void shaLink(struct shaResNode *node);
/* Increment link count. */

struct shaResNode *shaNewNode(struct shaResList *list, char *name, void *data);
/* Create a new node with link count of one. */

void shaCleanup(struct shaResList *list);
/* Free every node on list. */

void shaInit(struct shaResList *list, void (*freeData)(void *pData));
/* Start up resource list. */
#endif /* SHARES_H */