multi.cc

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/*
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 * this software without specific prior written permission.
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 * Authors: Mitch Hayenga
 *          Andreas Sandberg
 */

#include "mem/cache/prefetch/multi.hh"

#include "params/MultiPrefetcher.hh"

MultiPrefetcher::MultiPrefetcher(const MultiPrefetcherParams *p)
    : BasePrefetcher(p),
      prefetchers(p->prefetchers.begin(), p->prefetchers.end())
{
}

void
MultiPrefetcher::setCache(BaseCache *_cache)
{
    for (auto pf : prefetchers)
        pf->setCache(_cache);
}

Tick
MultiPrefetcher::nextPrefetchReadyTime() const
{
    Tick next_ready = MaxTick;

    for (auto pf : prefetchers)
        next_ready = std::min(next_ready, pf->nextPrefetchReadyTime());

    return next_ready;
}

PacketPtr
MultiPrefetcher::getPacket()
{
    for (auto pf : prefetchers) {
        if (pf->nextPrefetchReadyTime() <= curTick()) {
            PacketPtr pkt = pf->getPacket();
            panic_if(!pkt, "Prefetcher is ready but didn't return a packet.");
            return pkt;
        }
    }

    return nullptr;
}


MultiPrefetcher*
MultiPrefetcherParams::create()
{
    return new MultiPrefetcher(this);
}