#include "CacheManager.h"

pthread_once_t CacheManager::_ptht = PTHREAD_ONCE_INIT;

CacheManager::CacheManager(){}

CacheManager* CacheManager::_pinstance = nullptr;

void CacheManager::initCache(size_t num, const string &filename)
{
 if(num<0)
 { 
 return;
 }
 for (int i = 0; i < num;i++)
 {
 _cacheList.emplace_back(num);
 if(filename!=string())
 {
 _cacheList[i].readFromFile(filename);
 }
 }
}

LRUCache &CacheManager::getCache(size_t idx)
{
 return _cacheList[idx];
}


//定时更新缓存,将所有的cache的pendinglist的结点依次插入主Cache中

void CacheManager::updateAllCaches()
{
 int size = _cacheList.size();
 LRUCache &Lrucache = _cacheList[0];
 for (int i = 1; i < size;++i)
 {
 LRUCache &temp = _cacheList[i];
 if(temp._keyMap.size()==0)
 {
 cout << "List NOTHING!" << endl;
 continue;
 }
 Lrucache.mergePending(temp);
 }
 for (int i = 1; i < size; ++i)
 {
 LRUCache &temp = _cacheList[i];
 temp.update(Lrucache);
 }
}