void AlwaysPrefetch::prefetch(PAddr prefAddr, Time_t lat)
{
uint32_t paddr = prefAddr & defaultMask;
if(!buff->readLine(paddr)) { // it is not in the buff
penFetchSet::iterator it = pendingFetches.find(prefAddr);
if(it == pendingFetches.end()) {
CBMemRequest *r;
r = CBMemRequest::create(lat, lowerLevel[0], MemRead, prefAddr,
processAckCB::create(this, prefAddr));
r->markPrefetch();
LOG("NLAP: prefetch [0x%08lx]", (long unsigned int) prefAddr);
predictions.inc();
pendingFetches.insert(prefAddr);
}
}
}
void MarkovPrefetcher::prefetch(PAddr prefAddr, Time_t lat)
{
uint32_t paddr = prefAddr & defaultMask;
if(!buff->readLine(paddr)) { // it is not in the buff
penFetchSet::iterator it = pendingFetches.find(paddr);
if(it == pendingFetches.end()) {
CBMemRequest *r;
r = CBMemRequest::create(lat, lowerLevel[0], MemRead, paddr,
processAckCB::create(this, paddr));
if(lat != 0) { // if lat=0, the req might not exist anymore at this point
r->markPrefetch();
}
predictions.inc();
LOG("GHBP: prefetch [0x%08lx]", paddr);
pendingFetches.insert(paddr);
}
}
}
void StridePrefetcher::prefetch(pEntry *pe, Time_t lat)
{
uint bsize = buff->getLineSize();
PAddr prefAddr = pe->nextAddr(table);
for(int i = 0; i < depth; i++) {
if(!buff->readLine(prefAddr)) { // it is not in the buff
penFetchSet::iterator it = pendingFetches.find(prefAddr);
if(it == pendingFetches.end()) {
CBMemRequest *r;
r = CBMemRequest::create(lat, lowerLevel[0], MemRead, prefAddr,
processAckCB::create(this, prefAddr));
if(lat != 0) { // if lat=0, the req might not exist anymore at this point
r->markPrefetch();
}
pendingFetches.insert(prefAddr);
predictions.inc();
}
}
prefAddr += pe->stride;
}
}
