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ICache.java
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import java.util.ArrayList;
public class ICache {
int S;
int L;
int m;
int S2;
int L2;
int m2;
int S3;
int L3;
int m3;
int memory_accesses;
int cycles_access_data;
int cycles_access_data2;
int cycles_access_data3;
int cycles_access_memory;
int write_hit_policy; //1=write_throught 2=write_back
int write_miss_policy; //1=write allocate 2=write around
int write_hit_policy2; //1=write_throught 2=write_back
int write_miss_policy2; //1=write allocate 2=write around
int write_hit_policy3; //1=write_throught 2=write_back
int write_miss_policy3; //1=write allocate 2=write around
int hit=0;
int miss=0;
int hit2=0;
int miss2=0;
int hit3=0;
int miss3=0;
//int cycles = 0;
int levels;
int index;
int tag;
int offset;
int index2;
int tag2;
int offset2;
int index3;
int tag3;
int offset3;
int pc;
ArrayList<ActualCache> LevelOne = new ArrayList<ActualCache>();
ArrayList<ActualCache> LevelTwo = new ArrayList<ActualCache>();
ArrayList<ActualCache> LevelThree = new ArrayList<ActualCache>();
Memory memory;
//m cannot be zero
public ICache(int s, int l, int m, int s2, int l2, int m2, int s3, int l3,
int m3, int cycles_access_data, int cycles_access_data2,
int cycles_access_data3, int cycles_access_memory,
int write_hit_policy, int write_miss_policy,
int write_hit_policy2, int write_miss_policy2,int write_hit_policy3,
int write_miss_policy3, int levels, Memory memory) {
S = s;
L = l;
this.m = m;
S2 = s2;
L2 = l2;
this.m2 = m2;
S3 = s3;
L3 = l3;
this.m3 = m3;
this.cycles_access_data = cycles_access_data;
this.cycles_access_data2 = cycles_access_data2;
this.cycles_access_data3 = cycles_access_data3;
this.cycles_access_memory = cycles_access_memory;
this.write_hit_policy = write_hit_policy;
this.write_miss_policy = write_miss_policy;
this.write_hit_policy2 = write_hit_policy2;
this.write_miss_policy2 = write_miss_policy2;
this.write_hit_policy3 = write_hit_policy3;
this.write_miss_policy3 = write_miss_policy3;
this.levels = levels;
this.offset = (int)(Math.log(L)/Math.log(2));
this.index = (int)(Math.log(S/L)/Math.log(2));
this.tag = 16 - offset - index;
int i;
for (i = 0; i<m; i++) {
LevelOne.add(new ActualCache(new String[S/L][4]));
}
if (2 <= levels) {
this.offset2 = (int)(Math.log(L2)/Math.log(2));
this.index2 = (int)(Math.log(S2/L2)/Math.log(2));
this.tag2 = 16 - offset - index;
for (i = 0; i<m; i++) {
LevelTwo.add(new ActualCache(new String[S2/L2][4]));
}
if (3 <= levels) {
this.offset3 = (int)(Math.log(L3)/Math.log(2));
this.index3 = (int)(Math.log(S3/L3)/Math.log(2));
this.tag3 = 16 - offset3 - index3;
for (i = 0; i<m; i++) {
LevelThree.add(new ActualCache(new String[S3/L3][4]));
}
}
}
this.memory = memory;
}
public int read (String address, int type) { //type=1 read or 2 = write
int cycles = 0;
cycles += this.cycles_access_data;
while(address.length() < 16) {
address = "0" + address;
}
String tempTag = address.substring(0, tag);
String tempIndex = address.substring(tag, tag+index);
String tempOffset = address.substring(tag+index, 16);
int indexInt = Integer.parseInt(tempIndex, 2);
ArrayList<String> tempTags = new ArrayList<String>();
for(int j = 0; j < LevelOne.size(); j++) {
String TempTag1 = LevelOne.get(j).getArray()[indexInt][0];
tempTags.add(TempTag1);
}
if (tempTags.contains(tempTag)) {
hit++;
if(type == 2 && write_hit_policy == 1) {
//queue
this.memory_accesses ++;
}
if(type == 2 && write_hit_policy == 2) {
//System.out.println("here");
LevelOne.get(tempTags.indexOf(tempTag)).getArray()[indexInt][3] = "Y";
}
} else {
miss++;
if (levels >= 2) {
cycles += this.readLevelTwo(address, type);
if (type != 2 || write_miss_policy != 2) {
if (tempTags.contains(null)) {
LevelOne.get(tempTags.indexOf(null)).getArray()[indexInt][0] = tempTag;
LevelOne.get(tempTags.indexOf(null)).getArray()[indexInt][1] = tempIndex;
LevelOne.get(tempTags.indexOf(null)).getArray()[indexInt][2] = tempOffset;
LevelOne.get(tempTags.indexOf(null)).getArray()[indexInt][3] = "N";
} else {
int random = (int) (Math.random() * tempTags.size());
LevelOne.get(random).getArray()[indexInt][0] = tempTag;
LevelOne.get(random).getArray()[indexInt][1] = tempIndex;
LevelOne.get(random).getArray()[indexInt][2] = tempOffset;
if (LevelOne.get(random).getArray()[indexInt][3].equals("Y")) {
//queue
this.memory_accesses++;
}
LevelOne.get(random).getArray()[indexInt][3] = "N";
}
}
} else {
cycles += this.cycles_access_memory;
if (type != 2 || write_miss_policy != 2) {
System.out.println("no replace");
if (tempTags.contains(null)) {
LevelOne.get(tempTags.indexOf(null)).getArray()[indexInt][0] = tempTag;
LevelOne.get(tempTags.indexOf(null)).getArray()[indexInt][1] = tempIndex;
LevelOne.get(tempTags.indexOf(null)).getArray()[indexInt][2] = tempOffset;
LevelOne.get(tempTags.indexOf(null)).getArray()[indexInt][3] = "N";
} else {
int random = (int) (Math.random() * tempTags.size());
LevelOne.get(random).getArray()[indexInt][0] = tempTag;
LevelOne.get(random).getArray()[indexInt][1] = tempIndex;
LevelOne.get(random).getArray()[indexInt][2] = tempOffset;
if (LevelOne.get(random).getArray()[indexInt][3].equals("Y")) {
//System.out.println("here2");
//queue
this.memory_accesses++;
}
LevelOne.get(random).getArray()[indexInt][3] = "N";
}
}
}
}
System.out.println(this.hit);
System.out.println(this.memory_accesses);
return cycles;
}
public int readLevelTwo (String address, int type) {
int cycles2 = 0;
cycles2 += this.cycles_access_data2;
while(address.length() < 16) {
address = "0" + address;
}
String tempTag = address.substring(0, tag2);
String tempIndex = address.substring(tag2, tag2+index2);
String tempOffset = address.substring(tag2+index2, 16);
int indexInt = Integer.parseInt(tempIndex, 2);
ArrayList<String> tempTags = new ArrayList<String>();
for(int j = 0; j < LevelTwo.size(); j++) {
String TempTag1 = LevelTwo.get(j).getArray()[indexInt][0];
tempTags.add(TempTag1);
}
if (tempTags.contains(tempTag)) {
hit2++;
if(type == 2 && write_hit_policy2 == 1) {
//queue
this.memory_accesses ++;
}
if(type == 2 && write_hit_policy2 == 2) {
LevelTwo.get(tempTags.indexOf(tempTag)).getArray()[indexInt][3] = "Y";
}
} else {
miss2++;
if (levels == 3) {
cycles2 += this.readLevelThree(address, type);
if (type != 2 || write_miss_policy2 != 2) {
if (tempTags.contains(null)) {
LevelTwo.get(tempTags.indexOf(null)).getArray()[indexInt][0] = tempTag;
LevelTwo.get(tempTags.indexOf(null)).getArray()[indexInt][1] = tempIndex;
LevelTwo.get(tempTags.indexOf(null)).getArray()[indexInt][2] = tempOffset;
LevelTwo.get(tempTags.indexOf(null)).getArray()[indexInt][3] = "N";
} else {
int random = (int) (Math.random() * tempTags.size());
LevelTwo.get(random).getArray()[indexInt][0] = tempTag;
LevelTwo.get(random).getArray()[indexInt][1] = tempIndex;
LevelTwo.get(random).getArray()[indexInt][2] = tempOffset;
if (LevelTwo.get(random).getArray()[indexInt][3].equals("Y")) {
//queue
this.memory_accesses++;
}
LevelTwo.get(random).getArray()[indexInt][3] = "N";
}
}
} else {
cycles2 += this.cycles_access_memory;
if (type != 2 || write_miss_policy2 != 2) {
if (tempTags.contains(null)) {
LevelTwo.get(tempTags.indexOf(null)).getArray()[indexInt][0] = tempTag;
LevelTwo.get(tempTags.indexOf(null)).getArray()[indexInt][1] = tempIndex;
LevelTwo.get(tempTags.indexOf(null)).getArray()[indexInt][2] = tempOffset;
LevelTwo.get(tempTags.indexOf(null)).getArray()[indexInt][3] = "N";
} else {
int random = (int) (Math.random() * tempTags.size());
LevelTwo.get(random).getArray()[indexInt][0] = tempTag;
LevelTwo.get(random).getArray()[indexInt][1] = tempIndex;
LevelTwo.get(random).getArray()[indexInt][2] = tempOffset;
if (LevelTwo.get(random).getArray()[indexInt][3].equals("Y")) {
//queue
this.memory_accesses++;
}
LevelTwo.get(random).getArray()[indexInt][3] = "N";
}
}
}
}
//System.out.println("2:"+this.hit2);
return cycles2;
}
public int readLevelThree(String address, int type) {
int cycles3 = 0;
cycles3 += this.cycles_access_data3;
while(address.length() < 16) {
address = "0" + address;
}
String tempTag = address.substring(0, tag3);
String tempIndex = address.substring(tag3, tag3+index3);
String tempOffset = address.substring(tag3+index3, 16);
int indexInt = Integer.parseInt(tempIndex, 2);
ArrayList<String> tempTags = new ArrayList<String>();
for(int j = 0; j < LevelThree.size(); j++) {
String TempTag1 = LevelThree.get(j).getArray()[indexInt][0];
tempTags.add(TempTag1);
}
if (tempTags.contains(tempTag)) {
hit3++;
if(type == 2 && write_hit_policy3 == 1) {
//queue
this.memory_accesses ++;
}
if(type == 2 && write_hit_policy3 == 2) {
LevelThree.get(tempTags.indexOf(tempTag)).getArray()[indexInt][3] = "Y";
}
} else {
cycles3 += this.cycles_access_memory;
miss3++;
if (type != 2 || write_miss_policy3 != 2) {
if (tempTags.contains(null)) {
LevelThree.get(tempTags.indexOf(null)).getArray()[indexInt][0] = tempTag;
LevelThree.get(tempTags.indexOf(null)).getArray()[indexInt][1] = tempIndex;
LevelThree.get(tempTags.indexOf(null)).getArray()[indexInt][2] = tempOffset;
LevelThree.get(tempTags.indexOf(null)).getArray()[indexInt][3] = "N";
} else {
int random = (int) (Math.random() * tempTags.size());
LevelThree.get(random).getArray()[indexInt][0] = tempTag;
LevelThree.get(random).getArray()[indexInt][1] = tempIndex;
LevelThree.get(random).getArray()[indexInt][2] = tempOffset;
if (LevelThree.get(random).getArray()[indexInt][3].equals("Y")) {
//queue
this.memory_accesses++;
}
LevelThree.get(random).getArray()[indexInt][3] = "N";
}
}
}
return cycles3;
}
public static void main(String[]args) {
Cache c = new Cache(128, 16, 1, 64, 4, 2, 0, 0,
0, 3, 0,
0, 10,
1, 1,
0, 0,0,0, 2, new Memory());
//System.out.println("time" + c.read("10000110", 1));
//System.out.println("time" + c.read("10000110", 1));
//c.read("10000110", 2);
//c.read("11010100", 1);
//c.read("10", 1);
//c.read("", 1);
}
}