Question: import heapq from collections import deque, defaultdict class Process: def _ _ init _ _ ( self , pid, arrival _ time, priority, bursts )
import heapq from collections import deque, defaultdict class Process: def initself pid, arrivaltime, priority, bursts: self.pid pid self.arrivaltime arrivaltime self.priority priority self.bursts dequebursts # Queue of CPU and IO bursts self.waitingtime self.turnaroundtime self.currentbursttime self.resourcerequests self.iswaiting False class Scheduler: def initself: self.time self.readyqueue # Priority queue for scheduling self.ioqueue deque self.resourceallocation defaultdictlambda: None # Resource allocation self.waitingprocesses deque self.completedprocesses self.deadlockstates def addprocessself process: heapq.heappushselfreadyqueue, processpriority, process.arrivaltime, process def simulateself: while self.readyqueue or self.ioqueue or self.waitingprocesses: self.executereadyqueue self.executeioqueue self.checkdeadlock def executereadyqueueself: if self.readyqueue: process heapq.heappopselfreadyqueue currentburst process.bursts.popleft if isinstancecurrentburst, tuple: # CPU with resource requestsreleases self.handleresourcerequestsprocess currentburst else: self.time currentburst # Simulate CPU burst process.turnaroundtime self.time process.arrivaltime if not process.bursts: self.completedprocesses.appendprocess else: self.ioqueue.appendprocess def executeioqueueself: # Simulate IO bursts and move back to ready queue if self.ioqueue: ioprocess self.ioqueue.popleft ioburst ioprocess.bursts.popleft self.time ioburst self.addprocessioprocess def handleresourcerequestsself process, resourceburst: requesttype, resource, bursttime resourceburst if requesttype R: if self.resourceallocationresource is None: self.resourceallocationresource process.pid process.currentbursttime bursttime else: process.iswaiting True self.waitingprocesses.appendprocess elif requesttype F: if self.resourceallocationresource process.pid: self.resourceallocationresource None process.currentbursttime bursttime else: raise ExceptionInvalid resource release" def checkdeadlockself: # Simple deadlock detection: cyclic dependency check if self.detectdeadlock: self.deadlockstates.appendselftime, listselfwaitingprocesses self.recoverfromdeadlock def detectdeadlockself: # Use resource allocation graph or similar technique return False # Placeholder for actual deadlock detection logic def recoverfromdeadlockself: # Recover by terminating or preempting processes if self.waitingprocesses: victim self.waitingprocesses.popleft printfRecovering from deadlock by terminating process victimpid def generatestatisticsself: totalwaitingtime sumpwaitingtime for p in self.completedprocesses totalturnaroundtime sumpturnaroundtime for p in self.completedprocesses avgwaitingtime totalwaitingtime lenselfcompletedprocesses avgturnaroundtime totalturnaroundtime lenselfcompletedprocesses printfAverage Waiting Time: avgwaitingtime printfAverage Turnaround Time: avgturnaroundtime # Generate Gantt Chart printGantt Chart: Time Process # Example usage processes ProcessRF ProcessIO None, RF scheduler Scheduler for p in processes: scheduler.addprocessp scheduler.simulate scheduler.generatestatistics
in this code there is an error
Traceback most recent call last:
line in
scheduler.simulate
line in simulate
self.executeioqueue
line in executeioqueue
self.time ioburst
TypeError: unsupported operand types for : 'int' and 'tuple'
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