From c149983d931054d8cf88d2977a1f03a0b8b3b543 Mon Sep 17 00:00:00 2001 From: "Daniel R. Carvalho" Date: Tue, 27 Mar 2018 11:53:33 +0200 Subject: mem-cache: ReplacementPolicy specific replacement data Replacement data is specific for each replacement policy, and thus should be instantiated differently by each policy. Touch() and reset() do not need to be aware of CacheBlk, as they only update its ReplacementData. Invalidate() makes replacement policies independent of cache blocks, by removing the awareness of the valid state. An inheritable base ReplaceableEntry class was created to allow usage of replacement policies with any table-like structure. Change-Id: I998917d800fa48504ed95abffa2f1b7bfd68522b Reviewed-on: https://gem5-review.googlesource.com/9421 Reviewed-by: Nikos Nikoleris Maintainer: Nikos Nikoleris --- src/mem/cache/replacement_policies/bip_rp.cc | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) (limited to 'src/mem/cache/replacement_policies/bip_rp.cc') diff --git a/src/mem/cache/replacement_policies/bip_rp.cc b/src/mem/cache/replacement_policies/bip_rp.cc index 215711bb9..4a3a516f4 100644 --- a/src/mem/cache/replacement_policies/bip_rp.cc +++ b/src/mem/cache/replacement_policies/bip_rp.cc @@ -30,8 +30,9 @@ #include "mem/cache/replacement_policies/bip_rp.hh" +#include + #include "base/random.hh" -#include "debug/CacheRepl.hh" BIPRP::BIPRP(const Params *p) : LRURP(p), btp(p->btp) @@ -39,16 +40,17 @@ BIPRP::BIPRP(const Params *p) } void -BIPRP::reset(CacheBlk *blk) +BIPRP::reset(const std::shared_ptr& replacement_data) const { - BaseReplacementPolicy::reset(blk); + std::shared_ptr casted_replacement_data = + std::static_pointer_cast(replacement_data); - // Blocks are inserted as MRU if lower than btp, LRU otherwise + // Entries are inserted as MRU if lower than btp, LRU otherwise if (random_mt.random(1, 100) <= btp) { - blk->lastTouchTick = curTick(); + casted_replacement_data->lastTouchTick = curTick(); } else { // Make their timestamps as old as possible, so that they become LRU - blk->lastTouchTick = 0; + casted_replacement_data->lastTouchTick = 1; } } -- cgit v1.2.3