//
//BlockProcess函数，阻塞进程
//
public void BlockProcess(int a, DeviceType b, int time)
{
//
//保护CPU现场
//
PCBArray[a].PC = PC;
PCBArray[a].IR = IR;
PCBArray[a].DR = DR;
//
//判断申请设备是否成功，根据不同情况填写BlockReason项
//
bool d = Dev.JudgeDevice(b);
if (d == false)
{
PCBArray[a].NeedDevice = b;
PCBArray[a].HaveDevice = DeviceType.no;
PCBArray[a].BlockReason = "申请" + b + "设备失败";
PCBArray[a].PC = PCBArray[a].PC - 4;
}
else
{
PCBArray[a].DN = Dev.Allocate(b);
PCBArray[a].HaveDevice = b;
PCBArray[a].NeedDevice = DeviceType.no;
PCBArray[a].GetDeviceTime = XDTime;
PCBArray[a].WaitTime = time;
PCBArray[a].BlockReason = "等待IO输入输出";
if (DeviceStateChange != null)
{
DeviceStateChangeEventArgs e = new DeviceStateChangeEventArgs();
e.DN = PCBArray[a].DN;
e.type = b;
e.processname = PCBArray[a].ProcessName;
e.needtime = time;
e.Atime = XDTime;
DeviceStateChange(null, e);
}
}
//
//修改进程状态
//
InsertOneToBlock(a);
Execute = 10;
//
//转向进程调度
//
int c = JudgeAttemper();
if (c < 10)
{
Attemper(c);
}
}
private async void CentralManager_DeviceStateChange(object source, DeviceStateChangeEventArgs args)
{
Debug.WriteLine(args.DeviceState.State);
}
void StateChangedEvent(object sender, DeviceStateChangeEventArgs e)
{
_status = e.StatusInfo;
waitHandle.Set(); // <- sets signal
}
