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classes.cpp
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classes.cpp
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#include "header.h"
void LRU::init(int maxsizes)
{
maxsize=maxsizes;
currentsize=0;
}
bool LRU::removeIndexAndFile(int index,int type)
{
delIndex(index,type);
return true;
}
void LRU::deletion(int index)
{
entry e;
for(int i=0;i<(int)q.size();i++)
{
if(q[i].index==index)
{
e.index=q[i].index;
e.size=q[i].size;
q.erase(q.begin()+i);
currentsize-=e.size;
removeIndexAndFile(index,0);
removeIndexAndFile(index,1);
removeIndexAndFile(index,2);
}
}
}
void LRU::hit(int index)
{
entry e;
for(int i=0;i<(int)q.size();i++)
{
if(q[i].index==index)
{
e.index=q[i].index;
e.size=q[i].size;
q.erase(q.begin()+i);
q.push_back(e);
}
}
}
bool LRU::add(int index, int size)
{
entry e;
currentsize+=size;
//cout<<currentsize;
if(currentsize<=maxsize)
{ e.index=index;
e.size=size;
q.push_back(e);
display();
return true;
}
else
{
while(currentsize>maxsize)
{
int in;
if(q.size()!=0)
{
currentsize=currentsize-q[0].size;
in=q[0].index;
q.erase(q.begin());
if(!removeIndexAndFile(in,0))
{
}
if(!removeIndexAndFile(in,1))
{
}
if(!removeIndexAndFile(in,2))
{
}
}
else
{
break;
}
}
e.index=index;
e.size=size;
q.push_back(e);
display();
}
return true;
}