resource.c

/* $Id: resource.c,v 39.1 1995/04/25 01:41:53 mbayne Exp $
 *
 * The information in this file was created by Michael D. Bayne. This
 * information is in the public domain. You are permitted to reuse, rewrite,
 * bend, fold and mutilate this information. When it comes down to it, all
 * this distribution information is pretty much crap anyway and I maintain
 * exclusive rights to everything you see here, but go ahead and use it
 * anyway. I'm too busy doing cool stuff to sue anyone.
 *
 * $Log: resource.c,v $
 * Revision 39.1  1995/04/25  01:41:53  mbayne
 * Initial revision.
 *
 */

#include <exec/memory.h>
#include <proto/exec.h>
#include <stdlib.h>

#include "resource.h"

struct List Resources;

void resourceClassDestruct( int value )
{
    PvtResource *aRes;

    while( aRes = ( PvtResource * )RemHead( &Resources ))
    {
        aRes->rs_Destructor( aRes->rs_Resource );
        FreeMem( aRes, sizeof( PvtResource ));
    }

    exit( value );
}

void resourceClassInit( void )
{
    NewList( &Resources );
}

int resourceDestroy( void *theResource )
{
    PvtResource *aRes;

    if( IsListEmpty( &Resources ))
        return FALSE;

    for( aRes = resourceHead( &Resources );; aRes = resourceSucc( aRes ))
    {
        if( aRes->rs_Resource == theResource )
        {
            Remove(( struct Node * )aRes );
            aRes->rs_Destructor( aRes->rs_Resource );
            FreeMem( aRes, sizeof( PvtResource ));
            return TRUE;
        }
        if( aRes == resourceTail( &Resources ))
            break;
    }

    return FALSE;
}

void resourceAdd( void *Resource, FREEFUNC Destructor )
{
    PvtResource *theRes;

    if( theRes = AllocMem( sizeof( PvtResource ), MEMF_CLEAR|MEMF_PUBLIC ))
    {
        theRes->rs_Resource = Resource;
        theRes->rs_Destructor = Destructor;
        AddHead( &Resources, ( struct Node * )theRes );
    }
    else
        resourceClassDestruct( 2 );
}