string checkCache (string httpMsg) {
string cacheItem;
string cacheKey = "";
cacheKey.append (getReqType(httpMsg));
cacheKey.append (getUri(httpMsg));
cacheKey.append (getHost(httpMsg));
// Critical Section
pthread_mutex_lock(&cacheLock);
if (cacheMap.size() != 0) {
try {
tr1::unordered_map<string,string>::const_iterator got = cacheMap.find(cacheKey);
if (got == cacheMap.end()) {
cacheItem = "";
} else {
cacheItem = got->second;
}
} catch (...) {
cacheItem = "";
}
} else {
cacheItem = "";
}
pthread_mutex_unlock(&cacheLock);
return cacheItem;
}
void addToCache (string request, string response) {
string cacheKey = "";
cacheKey.append (getReqType(request));
cacheKey.append (getUri(request));
cacheKey.append (getHost(request));
// Critical Section
pthread_mutex_lock(&cacheLock);
try {
if (cacheMap.size() < MAXCACHESIZE) {
cacheMap.insert (make_pair<string, string>(cacheKey, response));
} else {
tr1::unordered_map<string,string>::const_iterator got = cacheMap.begin();
cacheMap.erase (got);
cacheMap.insert (make_pair<string, string>(cacheKey, response));
}
} catch (...) {
}
pthread_mutex_unlock(&cacheLock);
}