void AggressorAI::UpdateAI(const uint32 /*diff*/)
{
// update i_victimGuid if m_creature->getVictim() != 0 and changed
Unit* pVictim = SelectVictim();
if (!pVictim)
return;
i_victimGuid = pVictim->GetObjectGuid();
DoMeleeAttackIfReady();
}
NewPage LRU::FixNewPage(LBA lba)
{
NewPage np;
np.frame_id = -1;
np.page_id = -1;
int pid = -1;
int frid = -1;
LRUBCB* pb = NULL;
/* 申请分配新数据页 */
f_alloc_page(1, &pid);
if (pid == -1)
printf("there is no free page in the flash memory");
ASSERT(pid >= 0);
/*注册映射项*/
RegistEntry(lba,pid);
/* 在缓冲区中寻找空闲块，用于存储新数据页中的数据*/
frid = SelectVictim();
ftop[frid] = pid;
pb = ptob[hash(pid)];
/*将新的LRUBCB链接到桶的尾部*/
if ( pb != NULL)
{
while( pb->next != NULL)
{
pb = pb->next;
}
pb->next = new LRUBCB();
pb = pb->next;
}
else //桶为空
{
pb = new LRUBCB();
ptob[hash(pid)] = pb;
}
pb->dirty = 0;
pb->frame_id = frid;
pb->page_id = pid;
pb->next = NULL;
InsertLRUEle(frid);
np.frame_id = frid;
np.page_id = pid;
return np;
}
void Execute() {
switch(RandomProvider.GetNextAction()) {
case ActionType::Allocate: {
// Allocate an object of a random size.
int size = RandomProvider.GetNextObjectSize();
void* object = Allocator->Allocate(size);
if(object == 0) {
std::cout<<"Object could not be allocated!";
std::cout<<"Consider building in 64 bit mode.";
exit(-1);
}
TouchData(object, size);
InsertObject(object);
break;
}
case ActionType::Deallocate: {
if(PassedObjects.size() > 0) {
EnterCriticalSection(&PassedObjectsLock);
void* object = *(PassedObjects.end() - 1);
PassedObjects.pop_back();
LeaveCriticalSection(&PassedObjectsLock);
if(!VerifyData(object)) {
std::cout<<"Data corruption detected!\n";
}
Allocator->Deallocate(object);
}
if(Objects.size() > 0 && (deallocateObjects != Objects.size())) {
// Randomly select an object to be deallocated.
int victim = SelectVictim();
if(victim != -1) {
// Deallocate the object and insert the location
// in the list of unused positions to be used when allocating.
void* object = Objects[victim];
if(!VerifyData(object)) {
std::cout<<"Data corruption detected!\n";
}
Allocator->Deallocate(object);
ResetSlot(victim);
}
}
break;
}
case ActionType::Pass: {
if(Threads.size() > 0 && Objects.size() > 0 &&
(deallocateObjects != Objects.size())) {
// Select an object to be passed to one of the other threads.
int victim = SelectVictim();
if(victim != -1) {
int otherThread = RandomProvider.GetNextInt(Threads.size());
ThreadData* otherThreadData = Threads[otherThread];
void* object = Objects[victim];
ResetSlot(victim);
EnterCriticalSection(&otherThreadData->PassedObjectsLock);
otherThreadData->PassedObjects.push_back(object);
LeaveCriticalSection(&otherThreadData->PassedObjectsLock);
}
}
break;
}
}
}
int LRU::FixPage(int page_id)
{
ASSERT(page_id >= 0);
int frid = -1;
int rv = -1;
int hk = hash(page_id);
LRUBCB* pb = NULL;
pb = PageToLRUBCB(page_id);
/*读计数加1*/
total++;
/*若该页在缓冲区中已存在*/
if (pb != NULL)
{
frid = pb->frame_id;
AdjustLRUList(frid);
/*命中次数加1*/
hit++;
return frid;
}
else // 若该页不在缓冲区中
{
frid = SelectVictim();
/*正常情形下，此时应该从二级存储器读入需要加载的数据*/
rv = f_read_page(page_id,(BYTE *)(buf[frid].field),0,FRAMESIZE);
if(rv == RV_ERROR_INVALID_PAGE_STATE)
{
printf("page readed is invalid\n");
}
if (rv == RV_ERROR_FLASH_BLOCK_BROKEN)
{
printf("the block contained this page is broken \n");
}
flashreadcount++;
ftop[frid] = page_id;
pb = ptob[hk];
/*将新的LRUBCB链接到桶的尾部*/
if ( pb != NULL)
{
while( pb->next != NULL)
{
pb = pb->next;
}
pb->next = new LRUBCB();
pb = pb->next;
}
else //桶为空
{
pb = new LRUBCB();
ptob[hk] = pb;
}
pb->dirty = 0;
pb->frame_id = frid;
pb->page_id = page_id;
pb->next = NULL;
InsertLRUEle(frid);
return frid;
}
}
