void Storage::DeleteData(LRUCache &rLRUCache, uint64 x)
{
RecordIndexMap::accessor rWriteAccessor;
if(m_dataIndexes.find(rWriteAccessor, x))
{
//delete from LRU
rLRUCache.remove(x);
//queue delete from disk
m_pDiskWriter->QueueIndexDeletetion(rWriteAccessor);
//release memory
if(rWriteAccessor->second.m_pBlockManager)
{
//update memory usage
uint64 memoryUsage = blman_get_memory_usage(rWriteAccessor->second.m_pBlockManager);
m_memoryUsed -= memoryUsage;
//clean memory
blman_destroy(rWriteAccessor->second.m_pBlockManager);
rWriteAccessor->second.m_pBlockManager = NULL;
}
//delete from main map
m_dataIndexes.erase(rWriteAccessor);
//debug log
Log.Debug(__FUNCTION__, "Deleted data x:" I64FMTD, x);
}
//erase from disk queue
m_pDiskWriter->Remove(x);
}
void Storage::CheckMemory(LRUCache &rLRUCache)
{
uint64 xToDelete;
RecordIndexMap::accessor rWriteAccessor;
while(m_memoryUsed > g_cfg.MemoryLimit)
{
if(!rLRUCache.get(&xToDelete))
break;
//get record index
if(m_dataIndexes.find(rWriteAccessor, xToDelete))
{
//check if record does not wait in disk thread
if(rWriteAccessor->second.m_flags & eRIF_InDiskWriteQueue)
return;
//can be NULL
if(rWriteAccessor->second.m_pBlockManager)
{
//log
Log.Debug(__FUNCTION__, "Memory usage: " I64FMTD ", memory limit: " I64FMTD ", removing x: " I64FMTD " from memory.", m_memoryUsed.load(), g_cfg.MemoryLimit, xToDelete);
//update memory usage
uint64 memoryUsage = blman_get_memory_usage(rWriteAccessor->second.m_pBlockManager);
m_memoryUsed -= memoryUsage;
//clean memory
blman_destroy(rWriteAccessor->second.m_pBlockManager);
rWriteAccessor->second.m_pBlockManager = NULL;
}
}
//delete from LRU
if(rLRUCache.remove(xToDelete) == false)
{
Log.Warning(__FUNCTION__, "m_pLRUCache->remove(" I64FMTD ") == false", xToDelete);
}
}
}