unsigned char* ioman_getSector(IOManager *ioman,unsigned long address, unsigned char mode)
{
signed long bp;
if((bp=ioman_findSectorInCache(ioman,address))!=-1){
if(ioman_isReqRw(mode)){
ioman_setWritable(bp);
}
ioman_incUseCnt(ioman,bp);
if(!ioman_isReqExp(mode))ioman_incRefCnt(ioman,bp);
return(ioman_getPtr(ioman,bp));
}
if((bp=ioman_findFreeSpot(ioman))==-1){
if(((bp=ioman_findUnusedSpot(ioman))!=-1)&&(ioman_isWritable(bp))){
ioman_flushSector(ioman,bp);
}
}
if(bp!=-1){
ioman_resetCacheItem(ioman,bp);
if((ioman_putSectorInCache(ioman,address,bp))){
return(0);
}
if(mode==IOM_MODE_READWRITE){
ioman_setWritable(bp);
}
ioman_incUseCnt(ioman,bp);
if(!ioman_isReqExp(mode))ioman_incRefCnt(ioman,bp);
return(ioman_getPtr(ioman,bp));
}
if((bp=ioman_findOverallocableSpot(ioman))!=-1){
if(ioman_isWritable(bp)){
ioman_flushSector(ioman,bp);
}
if(ioman_push(ioman,bp)){
return(0);
}
ioman_resetCacheItem(ioman,bp);
if((ioman_putSectorInCache(ioman,address,bp))){
return(0);
}
if(ioman_isReqRw(mode)){
ioman_setWritable(bp);
}
ioman_incUseCnt(ioman,bp);
if(!ioman_isReqExp(mode))ioman_incRefCnt(ioman,bp);
return(ioman_getPtr(ioman,bp));
}
ioman_setError(ioman,IOMAN_ERR_NOMEMORY);
return(0);
}
euint8* ioman_getSector(IOManager *ioman,euint32 address, euint8 mode)
{
esint32 bp;
if((bp=ioman_findSectorInCache(ioman,address))!=-1){
if(mode==IOM_MODE_READWRITE){
ioman_setWritable(bp);
}
ioman_incUseCnt(ioman,bp);
ioman_incRefCnt(ioman,bp);
return(ioman_getPtr(ioman,bp));
}
if((bp=ioman_findFreeSpot(ioman))==-1){
if(((bp=ioman_findUnusedSpot(ioman))!=-1)&&(ioman_isWritable(bp))){
ioman_flushSector(ioman,bp);
}
}
if(bp!=-1){
ioman_resetCacheItem(ioman,bp);
if((ioman_putSectorInCache(ioman,address,bp))){
return(0);
}
if(mode==IOM_MODE_READWRITE){
ioman_setWritable(bp);
}
ioman_incUseCnt(ioman,bp);
ioman_incRefCnt(ioman,bp);
return(ioman_getPtr(ioman,bp));
}
if((bp=ioman_findOverallocableSpot(ioman))!=-1){
if(ioman_isWritable(bp)){
ioman_flushSector(ioman,bp);
}
if(ioman_push(ioman,bp)){
return(0);
}
ioman_resetCacheItem(ioman,bp);
if((ioman_putSectorInCache(ioman,address,bp))){
return(0);
}
if(mode==IOM_MODE_READWRITE){
ioman_setWritable(bp);
}
ioman_incUseCnt(ioman,bp);
ioman_incRefCnt(ioman,bp);
return(ioman_getPtr(ioman,bp));
}
return(0);
}
signed char ioman_flushAll(IOManager *ioman)
{
unsigned short c;
for(c=0;c<ioman->numbuf;c++){
if(ioman_isWritable(c)){
if(ioman_flushSector(ioman,c)){
return(-1);
}
if(ioman->usage[c]==0)ioman_setNotWritable(c);
}
}
return(0);
}
esint8 ioman_flushAll(IOManager *ioman)
{
euint16 c;
for(c=0;c<ioman->numbuf;c++){
if(ioman_isWritable(c)){
if(ioman_flushSector(ioman,c)){
return(-1);
}
if(ioman->usage[c]==0)ioman_setNotWritable(c);
}
}
return(0);
}
signed char ioman_releaseSector(IOManager *ioman,unsigned char* buf)
{
unsigned short bp;
bp=ioman_getBp(ioman,buf);
ioman_decUseCnt(ioman,bp);
if(ioman_getUseCnt(ioman,bp)==0 && ioman->itptr[bp]!=0){
if(ioman_isWritable(bp)){
ioman_flushSector(ioman,bp);
}
ioman_pop(ioman,bp);
ioman_putSectorInCache(ioman,ioman->sector[bp],bp);
}
return(0);
}
esint8 ioman_releaseSector(IOManager *ioman,euint8* buf)
{
euint16 bp;
bp=ioman_getBp(ioman,buf);
ioman_decUseCnt(ioman,bp);
if(ioman_getUseCnt(ioman,bp)==0 && ioman->itptr[bp]!=0){
if(ioman_isWritable(bp)){
ioman_flushSector(ioman,bp);
}
ioman_pop(ioman,bp);
ioman_putSectorInCache(ioman,ioman->sector[bp],bp);
}
return(0);
}
signed char ioman_flushRange(IOManager *ioman,unsigned long address_low, unsigned long address_high)
{
unsigned long c;
if(address_low>address_high){
c=address_low; address_low=address_high;address_high=c;
}
for(c=0;c<ioman->numbuf;c++){
if((ioman->sector[c]>=address_low) && (ioman->sector[c]<=address_high) && (ioman_isWritable(c))){
if(ioman_flushSector(ioman,c)){
return(-1);
}
if(ioman->usage[c]==0)ioman_setNotWritable(c);
}
}
return(0);
}
