public void Read() { var buffer = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 }; const uint frameSize = 4; var ram = new Ram(buffer, frameSize); var pageSet = new PageInfo(); var pcb = new ProcessContextBlock { Id = 1 }; ram.Allocate(pcb); pageSet.Append(ram.Allocate(pcb)); pageSet.Append(ram.Allocate(pcb)); var pageStream = new PageStream(ram, pageSet); Assert.That(pageStream.Length, Is.EqualTo(8)); var b = new byte[6]; pageStream.Read(b, 0, 6); Assert.That(pageStream.Position, Is.EqualTo(6)); Assert.That(b, Is.EquivalentTo(new[] { 5, 6, 7, 8, 9, 10 })); }
public void Write() { var buffer = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 }; const uint frameSize = 4; var ram = new Ram(buffer, frameSize); var pageSet = new PageInfo(); var pcb = new ProcessContextBlock { Id = 1 }; ram.Allocate(pcb); pageSet.Append(ram.Allocate(pcb)); pageSet.Append(ram.Allocate(pcb)); var pageStream = new PageStream(ram, pageSet); Assert.That(pageStream.Length, Is.EqualTo(8)); var b = new byte[] { 91, 92, 93, 94, }; pageStream.Position = 2; pageStream.Write(b, 0, 4); Assert.That(buffer, Is.EquivalentTo(new[] { 1, 2, 3, 4, 5, 6, 91, 92, 93, 94, 11, 12, })); }
private ProcessContextBlock CreateProcess(uint pId) { var p = new ProcessContextBlock { Id = pId }; p.Stack.Append(_cpu.Ram.Allocate(p)); p.Code.Append(_cpu.Ram.Allocate(p)); p.GlobalData.Append(_cpu.Ram.Allocate(p)); return(p); }
public void SignalEvent() { var pA = _cpu.CurrentProcess; Invoke(InstructionsWithControlByte.WaitEvent, 1); var pB = new ProcessContextBlock(); _cpu.CurrentProcess = pB; Invoke(InstructionsWithControlByte.SignalEvent, 1); Assert.That(_cpu.CurrentProcess, Is.EqualTo(pB)); Assert.That(_cpu.ReadyQueue, Contains.Item(pA)); Assert.That(_cpu.DeviceReadQueue, Is.Empty); }
public void SignalEvent() { var pA = _cpu.CurrentProcess; Instructions.Movi(_cpu, Register.A, 1); Instructions.WaitEvent(_cpu, Register.A); var pB = new ProcessContextBlock(); _cpu.CurrentProcess = pB; Instructions.Movi(_cpu, Register.A, 1); Instructions.SignalEvent(_cpu, Register.A); Assert.That(_cpu.CurrentProcess, Is.EqualTo(pB)); Assert.That(_cpu.ReadyQueue, Contains.Item(pA)); Assert.That(_cpu.DeviceQueue, Is.Empty); }
public void Free() { var ram = new Ram(2, 1); var pcb = new ProcessContextBlock { Id = 1 }; var frame = ram.Allocate(pcb); Assert.That(frame, Is.Not.Null); frame = ram.Allocate(pcb); Assert.That(frame, Is.Not.Null); ram.Free(frame); frame = ram.Allocate(pcb); Assert.That(frame, Is.Not.Null); }
public void Allocate() { var ram = new Ram(2, 1); var pcb = new ProcessContextBlock { Id = 1 }; var page = ram.Allocate(pcb); Assert.That(page, Is.Not.Null); Assert.That(page.PageNumber, Is.Not.EqualTo(0)); page = ram.Allocate(pcb); Assert.That(page, Is.Not.Null); Assert.That(page.PageNumber, Is.Not.EqualTo(0)); page = ram.Allocate(pcb); Assert.That(page, Is.Null); }
public void CreateShared() { var ram = new Ram(1024, 256); var offset = ram.AllocateShared(512); Assert.That(offset, Is.EqualTo(0)); var pcb = new ProcessContextBlock { Id = 10 }; var p1 = ram.Allocate(pcb); var p2 = ram.Allocate(pcb); var p1Offset = ram.ToPhysicalAddress(10, p1.VirtualAddress); var p2Offset = ram.ToPhysicalAddress(10, p2.VirtualAddress); Assert.That(p1Offset, Is.GreaterThan(offset)); Assert.That(p2Offset, Is.GreaterThan(offset)); Assert.That(p2Offset, Is.GreaterThan(p1Offset)); }
public static uint Compile(this Cpu cpu, ProcessContextBlock pcb, string source) { var ms = new MemoryStream(); using (var writer = new CodeWriter(ms)) { var assembler = new Assembler(source); foreach (var i in assembler.Assemble()) { writer.Write(i); } writer.Close(); var codeBlock = cpu.AllocateCodeBlock(pcb, (uint)ms.Length); ms.WriteTo(codeBlock); return((uint )ms.Length); } }