int main(int argc, char *argv[]){
cache_params_t params;
/* file handling stuff */
FILE *tracefile;
char instruction_ptr[50];
char instruction;
char mem_addr[50];
int count;
char *traceData;
Cache_t cache;
int tagSize, setSize, offsetSize;
if(argc == 2 && strcmp(argv[1], "-h") == 0){
printf("help menu\n");
return 1;
}
if(argc < 2 || argc > 6){
printf("ERROR: incorrect number of arguments\n");
return 1;
}
/*
* TODO:
* Check cachesize = numsets x setsize x blocksize
*/
/* Check if cachesize here and correct*/
/* should check that these are numbers as well */
if(isPowerOfTwo(atoi(argv[1]))){
params.cachesize = atoi(argv[1]);
}else{
printf("ERROR: cachesize must be a power of 2\n");
return 1;
}
/* check if blocksize is here and correct */
if(isPowerOfTwo(atoi(argv[3]))){
params.blocksize = atoi(argv[3]);
}else{
printf("ERROR: blocksize must be a power of 2\n");
return 1;
}
params.setsize = 1;
/* check for associativit y */
if(strcmp("direct", argv[2]) == 0){
params.associativity = "direct";
}else if( strcmp("assoc", argv[2]) == 0){
params.associativity = "assoc";
}else{
int i = 0, digit = 0;
char* str = argv[2];
char* test;
while(str[i] != '\0'){
if(isdigit(str[i])){
digit = i;
break;
}
i++;
}
/*
* setsize = 1 for d-m caches
*/
params.setsize = 1;
test = malloc(strlen(argv[2]));
strncpy(test, argv[2], digit);
if(strcmp("assoc:", test) == 0){
params.associativity = "n-way";
if(isPowerOfTwo( argv[2][digit] - '0')){
params.setsize = argv[2][digit] - '0';
}else{
printf("ERROR: n must be power of 2\n");
return 1;
}
}else{
printf("ERROR: invalid associativity format\n");
return 1;
}
}
/* check for writepolicy*/
if(strcmp("wt", argv[4]) == 0){
params.writepolicy = "wt";
}else if(strcmp("wb", argv[4]) == 0){
params.writepolicy = "wb";
}else{
printf("ERROR: invalid writepolicy format\n");
return 1;
}
/* check for tracefile */
if(!(tracefile = fopen(argv[5], "r"))){
printf("ERROR: could not find tracefile: %s\n", argv[5]);
return 1;
}else{
traceData = readFile(argv[5]);
}
/*
<<<<<<< HEAD
* create the new cache, do initialization stuff
=======
* create the new cache, do initializatino stuff
>>>>>>> 59f4c294c92c026c0d9d15ccfd2984234f2a3158
*/
cache = *newCache(params.cachesize, params.blocksize, params.setsize, params.associativity, params.writepolicy);
/*
* read each line of the tracefile
*
* DIRECT MAP ONLY RIGHT NOW
*/
count = 0;
while(fscanf(tracefile, "%s %c %s", instruction_ptr, &instruction, mem_addr) == 3) {
int tag_size;
int lines;
int offset_size;
int set_size;
int set_lines;
unsigned int addr_int;
char *addr_bin;
char *formatted_bin;
char *tag;
char *setid;
char *offset;
formatted_bin = (char*) malloc(sizeof(char) * 35);
addr_bin = (char*) malloc(sizeof(char) * 33);
lines = (int)(params.cachesize / params.blocksize);
set_lines = (int)(params.cachesize / (params.blocksize * params.setsize));
if(strcmp(params.associativity,"n-way") == 0){
set_size = (int) ceil((log10(set_lines)/log10(2.0)));
}else{
set_size = (int) ceil((log10(lines)/log10(2.0)));
}
offset_size = ceil((log10(params.blocksize)/log10(2.0)));
tag_size = (32 - (offset_size+set_size));
/*
* just for output
*/
tagSize = tag_size;
setSize = set_size;
offsetSize = offset_size;
tag = (char*) malloc(sizeof(char)*tag_size+1);
setid = (char*) malloc(sizeof(char)*set_size+1);
offset = (char*) malloc(sizeof(char)*offset_size+1);
addr_int = htoi(mem_addr);
addr_bin = itob(addr_int);
memcpy(tag, &addr_bin[0], tag_size);
tag[tag_size+1] = '\0';
memcpy(setid, &addr_bin[tag_size], set_size);
setid[set_size+1] = '\0';
memcpy(offset, &addr_bin[(tag_size+set_size)], offset_size);
offset[offset_size+1] = '\0';
if(DEBUG) {
printf("------\n%s\n",mem_addr);
printf("%s %s %s \n", tag, setid, offset);
printf("tag: %i, set: %i, offset: %i\n", tagSize, setSize, offsetSize);
}
/*
* Write to the cache
*/
if('W' == instruction){
if(DEBUG){
printf("Write instruction\n Cache State:\n");
printCache(&cache);
if( isInCache(&cache, addr_bin, tag, setid, offset)){
printf("\ncache already contains %s\n",mem_addr);
}else{
printf("\ncache does not contain %s\n",mem_addr);
}
if( isInCache(&cache, addr_bin, tag, setid, offset)){
printf("\ncache contains %s\n",mem_addr);
}
printf("\nCache State:\n");
printCache(&cache);
}
writeToCache(&cache, addr_bin, tag, setid, offset, lines);
/*
* Read from the cache
*/
}else if('R' == instruction ){
if(DEBUG) {
printf("Read instruction\n Cache State:\n");
printCache(&cache);
if( isInCache(&cache, addr_bin, tag, setid, offset)){
printf("\ncache already contains %s\n",mem_addr);
}else{
printf("\ncache does not contain %s\n",mem_addr);
}
if( isInCache(&cache, addr_bin, tag, setid, offset)){
printf("\ncache contains %s\n",mem_addr);
}
printf("\nCache State:\n");
printCache(&cache);
}
readFromCache(&cache, addr_bin, tag, setid, offset, lines);
}
count++;
}
printCache(&cache);
return 1;
}
/**
* Try to load file from cache or download a remote file if not in cache
*
* @param m the maps containing the settings of the main.cfg file
* @param content the map to update
* @param hInternet the HINTERNET pointer
* @param url the url to fetch
* @return 0
*/
int loadRemoteFile(maps** m,map** content,HINTERNET* hInternet,char *url){
char* fcontent = NULL;
char* cached=isInCache(*m,url);
char *mimeType=NULL;
int fsize=0;
map* t=getMap(*content,"xlink:href");
if(t==NULL){
t=getMap((*content),"href");
addToMap(*content,"xlink:href",url);
}
if(cached!=NULL){
struct stat f_status;
int s=stat(cached, &f_status);
if(s==0){
fcontent=(char*)malloc(sizeof(char)*(f_status.st_size+1));
FILE* f=fopen(cached,"rb");
fread(fcontent,f_status.st_size,1,f);
fsize=f_status.st_size;
fcontent[fsize]=0;
fclose(f);
addToMap(*content,"cache_file",cached);
}
cached[strlen(cached)-1]='m';
s=stat(cached, &f_status);
if(s==0){
mimeType=(char*)malloc(sizeof(char)*(f_status.st_size+1));
FILE* f=fopen(cached,"rb");
fread(mimeType,f_status.st_size,1,f);
mimeType[f_status.st_size]=0;
fclose(f);
}
}else{
addRequestToQueue(m,hInternet,url,true);
return 0;
}
if(fsize==0){
return errorException(*m, _("Unable to download the file."), "InternalError",NULL);
}
if(mimeType!=NULL){
addToMap(*content,"fmimeType",mimeType);
}
map* tmpMap=getMapOrFill(content,"value","");
free(tmpMap->value);
tmpMap->value=(char*)malloc((fsize+1)*sizeof(char));
if(tmpMap->value==NULL || fcontent == NULL)
return errorException(*m, _("Unable to allocate memory"), "InternalError",NULL);
memcpy(tmpMap->value,fcontent,(fsize+1)*sizeof(char));
char ltmp1[256];
sprintf(ltmp1,"%d",fsize);
addToMap(*content,"size",ltmp1);
if(cached==NULL){
addToCache(*m,url,fcontent,mimeType,fsize, NULL, 0);
}
else{
addToMap(*content,"isCached","true");
map* tmp=getMapFromMaps(*m,"main","cacheDir");
if(tmp!=NULL){
map *c=getMap((*content),"xlink:href");
char* md5str=getMd5(c->value);
char* fname=(char*)malloc(sizeof(char)*(strlen(tmp->value)+strlen(md5str)+6));
sprintf(fname,"%s/%s.zca",tmp->value,md5str);
addToMap(*content,"cache_file",fname);
free(fname);
}
}
free(fcontent);
free(mimeType);
free(cached);
return 0;
}
