def main2(): instruction1 = BasicInstruction() instruction2 = BasicInstruction() memory = Memory() memory.buildMemory(5) frame1 = Frame(memory,0,1) frame2 = Frame(memory,1,2) frame3 = Frame(memory,3,1) frame4 = Frame(memory,4,1) mmu = MMU() mmu.fullFrames.append(frame1) mmu.fullFrames.append(frame3) mmu.emptyFrames.append(frame2) mmu.emptyFrames.append(frame4) program = Program('a') program.addInstruction(instruction1) pcbA = PCB('a',0,0,1) programb = Program('b') pcbB = PCB('b',0,3,1) programb.addInstruction(instruction1) frame1.load(pcbA,program) frame3.load(pcbB,programb) memory.printMemory() print(memory.getEmptyCells()) mmu.compact() memory.printMemory()
def saveProgram(self,program): try: pid = program.getName() priority = self.addPriority(program) size = program.size() base = self.mmu.getBase(size) pcb = PCB(pid,priority,base,size) self.mmu.load(pcb,program,base) self.scheduler.add(pcb) except (Exception): try: self.mmu.compact() base = self.mmu.getBase(size) pcb = PCB(pid,priority,base,size) self.mmu.load(pcb,program,base) self.scheduler.add(pcb) except (Exception): self.getDisk().save(program)
def main3(): if(1==1): instruction1 = BasicInstruction() instruction2 = BasicInstruction() memory = Memory() memory.buildMemory(5) frame1 = Frame(memory,0,1) frame2 = Frame(memory,1,2) frame3 = Frame(memory,3,1) frame4 = Frame(memory,4,1) mmu = MMU() mmu.fullFrames.append(frame1) mmu.fullFrames.append(frame3) mmu.emptyFrames.append(frame2) mmu.emptyFrames.append(frame4) program = Program('a') program.addInstruction(instruction1) pcbA = PCB('a',0,0,1) programb = Program('b') pcbB = PCB('b',0,3,1) programb.addInstruction(instruction1) frame1.load(pcbA,program) frame3.load(pcbB,programb) programc = Program('c') programc.addInstruction(instruction1) programc.addInstruction(instruction1) programc.addInstruction(instruction1) programd = Program('d') programd.addInstruction(instruction2) programd.addInstruction(instruction2) programd.addInstruction(instruction2) scheduler = Scheduler(PFIFO()) disk = Disk(None) kernel = Kernel (None,None,scheduler,mmu,disk) disk.setKernel(kernel) memory.printMemory() kernel.saveProgram(programc) print( " ") memory.printMemory() kernel.saveProgram(programd) print( " ") memory.printMemory() print(len(disk.programList))
def createPcb(self, priority, pageTable=None): newPcb = PCB(priority, pageTable) newPcb._pid = self.newPid() self._table[newPcb._pid] = newPcb return newPcb