public static void deallocatePcb(PCB pcb)
{
if (pcb.getProcessStatus() == PCB.PROCESS_STATUS.TERMINATE)
{
int startingVirtualPageNum = Helpers.getPageNumberFromAddress(pcb.getJobMemoryAddress());
for (int i = 0; i < pcb.getAllocatedVirtualPages().Capacity; i++)
{
int virtualPageNum = pcb.getAllocatedVirtualPages()[i];
int physicalPageNum = _pageTable[virtualPageNum];
_memBlock[physicalPageNum] = null;
_pageTable[virtualPageNum] = -1;
}
}
}
public void load(PCB job)
{
Console.WriteLine("cpu.loading job: " + job.getJobNumber());
jobNumber = job.getJobNumber();
printFlags("PRE LOADING");
// int instructionCounter = 1;
jobMemoryStartAddress = job.getJobMemoryAddress();
start = DateTimeOffset.Now.ToUnixTimeMilliseconds();
j = job;
IOCount = 0;
tempBuffer = j.getTemporaryBuffer();
inputBuffer = j.getInputBuffer();
outputBuffer = j.getOutputBuffer();
jobCounter = j.getJobInstructionCount();
cacheSize = tempBuffer + inputBuffer + outputBuffer + jobCounter;
cache = new String[cacheSize];
instructionCache = new String[jobCounter];
VMA = job.getAllocatedVirtualPages();
for (int i = 0; i < cacheSize; i++)
{
cache[i] = read(i);
}
programCounter = j.getProgramCounter();
setIdleFlag(false);
setTerminateFlag(false);
setJobLoaded(true);
Console.WriteLine("cpu.loading jon: " + job.getJobNumber() + " complete");
updateMetrics(CPUMetrics.CPU_STATE.LOADING, "N/A");
sleep(3);
updateOsMetrics();
printFlags("POST LOADING");
}
public static void synchronizeCache(PCB job)
{
int cacheSize = job.getCacheSize();
int startDiskAddress = job.getJobDiskAddress();
int currentDiskAddress = startDiskAddress;
int currentMemoryAddress = job.getJobMemoryAddress();
for (int i = 0; currentDiskAddress < startDiskAddress + cacheSize; i++)
{
int virtualPage = job.getAllocatedVirtualPages()[i / RAM.getPageSize()];
int virtualPageTimesSize = virtualPage * RAM.getPageSize();
int finalAdd = virtualPageTimesSize + i % RAM.getPageSize();
write(job.getAllocatedVirtualPages()[i / RAM.getPageSize()] * RAM.getPageSize() + i % RAM.getPageSize(), job.getCache()[i]);
Disk.writeDisk(job.getCache()[i], currentDiskAddress);
currentDiskAddress++;
currentMemoryAddress++;
}
}