Process State Simulation

/** @file ProcessSimulator.hpp * @brief ProcessSimulator API/Includes * * @author Student Name * @note cwid: 123456 * @date Fall 2019 * @note ide: g++ 8.2.0 / GNU Make 4.2.1 * * Header include file for our Process Simulator class. * Definition of simulator API goes in this file. Implementation * of member methods is found in corresponding .cpp file. */ #ifndef PROCESS_SIMULATOR_HPP #define PROCESS_SIMULATOR_HPP #include "Process.hpp" #include "ProcessState.hpp" #include "SimulatorException.hpp" #include <fstream> #include <iostream> #include <list> #include <map> #include <sstream> #include <string> using namespace std; /** @class ProcessSimulator * @brief Process Simulation class * * Perform simulation of basic process creation and scheduling in an * operating system. */ class ProcessSimulator { private: /// @brief The system time slice quantum. This parameter controls how long a /// process is scheduled and given to run on the cpu before it is forcably /// timed out and moved back to the end of the ready queue. Time timeSliceQuantum; /// @brief The current system time. Each cpu cycle causes 1 system time clicke /// to occur in this discrete simulation. Time systemTime; /// @brief The next process identifier that will be assigned to the next new /// process to enter the system. Pid nextProcessId; /// @brief Keeps track of the number of processes that have exited the system. int numFinishedProcesses; public: // constructors and destructors ProcessSimulator(Pid timeSliceQuantum); ~ProcessSimulator(); void reset(); // accessor and mutator (get/set) methods for ProcessSimulator Time getTimeSliceQuantum() const; Pid getNextProcessId() const; Time getSystemTime() const; int getNumActiveProcesses() const; int getNumFinishedProcesses() const; // accessor methods for Processes managed by the simulator const Process& getProcess(Pid pid) const; // cpu, ready queue and blocked list management functions Pid runningProcess() const; bool isCpuIdle() const; int readyQueueSize() const; Pid readyQueueFront() const; Pid readyQueueBack() const; int blockedListSize() const; bool isInState(Time timeSliceQuantum, Time systemTime, int numActiveProcesses, int numFinishedProcesses, Pid runningProcess, int readyQueueSize, Pid readyQueueFront, Pid readyQueueBack, int blockedListSize); // system event simulations and simulation management void newEvent(); void dispatch(); void cpuEvent(); void timeout(); void blockEvent(EventId eventId); void unblockEvent(EventId eventId); void doneEvent(); // full simulation functions void runSimulation(string simulationFile); // friend functions for i/o string toString() const; friend ostream& operator<<(ostream& stream, const ProcessSimulator& sim); }; #endif // PROCESS_SIMULATOR_HPP