public bool FeedProcess(Process proc)
{
bool response = false;
if (proc.Type == "Allocate")
{
ProcessAllocateEventArgs arg = new ProcessAllocateEventArgs();
response = AllocateProcess(proc, out arg);
if (response == true)
{
OnAllocated(arg);
}
}
else if (proc.Type == "DeAllocate")
{
ProcessDeAllocateEventArgs arg = new ProcessDeAllocateEventArgs();
response = DeAllocateProcess(proc, out arg);
if (response == true)
{
OnDeAllocated(arg);
}
}
return(false);
}
public override bool DeAllocateProcess(Process proc, out ProcessDeAllocateEventArgs arg)
{
bool isEnd = false;
int startIndex = 0;
int blockLength = 0;
for (int i = 0; i < MemorySize; i++)
{
if (Memory[i].ProcessId == proc.ID && Memory[i].IsStart == true)
{
startIndex = i;
}
if (Memory[i].ProcessId == proc.ID && Memory[i].IsEnd == true)
{
blockLength = i - startIndex;
isEnd = true;
}
if (Memory[i].ProcessId == proc.ID)
{
Memory[i].IsAssigned = false;
Memory[i].IsEnd = false;
Memory[i].IsStart = false;
Memory[i].ProcessId = 0;
}
if (isEnd)
{
break;
}
}
for (int i = Processes.Count - 1; i > 0; i--)
{
if (Processes[i].ID == proc.ID)
{
Processes.RemoveAt(i);
}
}
arg = new ProcessDeAllocateEventArgs {
ProcessID = proc.ID, ProcessName = proc.Name, StartBlock = startIndex, BlockLength = blockLength
};
return(true);
}
public abstract bool DeAllocateProcess(Process objProcess, out ProcessDeAllocateEventArgs arg);
public override bool DeAllocateProcess(Process proc, out ProcessDeAllocateEventArgs arg)
{
// modifies memory
bool isEnd = false;
int startIndex = 0;
int blockLength = 0;
for (int i = 0; i < MemorySize; i++)
{
if (Memory[i].ProcessId == proc.ID && Memory[i].IsStart == true)
{
startIndex = i;
}
if (Memory[i].ProcessId == proc.ID && Memory[i].IsEnd == true)
{
blockLength = i - startIndex;
isEnd = true;
}
if (Memory[i].ProcessId == proc.ID)
{
Memory[i].IsAssigned = false;
Memory[i].IsEnd = false;
Memory[i].IsStart = false;
Memory[i].ProcessId = 0;
}
if (isEnd)
{
break;
}
}
// finds and removes the target process
for (int i = Processes.Count - 1; i > 0; i--)
{
if (Processes[i].ID == proc.ID)
{
Processes.RemoveAt(i);
}
}
arg = new ProcessDeAllocateEventArgs
{
ProcessID = proc.ID,
ProcessName = proc.Name
};
// converts the allocated data to available data
BlockFit b = null;
for (int i = 0; i < allocated.Count; i++)
{
b = allocated[i];
if (b.ID == proc.ID)
{
arg.StartBlock = b.start_pos;
arg.BlockLength = b.blockLength;
allocated.Remove(allocated[i]);
for (int j = 0; j < avail.Count; j++)
{
// if the newly available blocks are next to already existing available blocks, merge them
BlockFit bl = avail[j];
if (b.start_pos + b.blockLength - 1 == bl.start_pos)
{
b = new BlockFit()
{
ID = bl.ID, blockLength = b.blockLength + bl.blockLength, start_pos = b.start_pos
};
avail.Remove(avail[j]);
}
if (bl.start_pos + bl.blockLength - 1 == b.start_pos)
{
b = new BlockFit()
{
blockLength = b.blockLength + bl.blockLength, start_pos = bl.start_pos
};
avail.Remove(avail[j]);
}
}
avail.Add(b);
break;
}
}
return(true);
}