Hi guys,
I am trying to implement in marrs mechanism which will count the time the
data exist in cache and if the time pass some threshold, cache line should
be evicted. I tried to implement this function in cacheLines.h
template <int SET_COUNT, int WAY_COUNT, int LINE_SIZE, int LATENCY>
CacheLine* CacheLines<SET_COUNT, WAY_COUNT, LINE_SIZE,
LATENCY>::ret_evict()
{
W64 physAddress = 0;
CacheLine *line = NULL;
foreach(i, SET_COUNT) {
Set &set = base_t::sets[i];
foreach(j, WAY_COUNT) {
if (set.data[j].RetentionTimeCount > retentionTime_){
// CacheLine *line = set.data[j];
physAddress = i*set.data[j].tag;
line = base_t::probe(physAddress); // something like line=
&set.data[j] doesn't work neither
return line;
}
}
}
return line;
}
it should return the pointer on line which holds the data more than
retentionTime_. However when I try to compile this code I get this error
cacheTypes.cpp:(.text+0xe08): undefined reference to `vtable for
Memory::CacheLinesBase'
ptlsim/build/cache/cacheTypes.o:cacheTypes.cpp:(.text+0x1128): more
undefined references to `vtable for Memory::CacheLinesBase' follow
collect2: error: ld returned 1 exit status
scons: *** [qemu/qemu-system-x86_64] Error 1
If you can help these are my questions:
1) am I returning right line?
2) Can you help me with this error? or how I could alternatively return
this line?
3) I was planing to use this function in *cache_access_cb()* in *
cacheController.cpp* where I would create signal *&clearEntry*_ for
evicting this line. Is this principle OK?
Thanks in forward for helping me with this.
best regards
Zoran
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