server.h

#ifndef SERVERTHREADS_H
#define SERVERTHREADS_H

#include "common.h"

//POSIX library for threads
#include <pthread.h>
#include <unistd.h>
#include <stdlib.h>
#include <map>

class ServerThreads {
public:
    ServerThreads();
    ~ServerThreads();

    static bool BankersSimulation(int *request);
    void readConfigurationFile(const char *fileName);
    void createAndStart();
    void initializationOfDataStructures();
    static void processRequest(int threadID, int socketFD);
    void printAndSaveResults(const char* fileName);

private:
    //Internal server parameters
    int numServerThreads; // Number of different threads that the server will use to accept connections
    int backlog; // Maximum number of pending connections for each thread
    int port; // The port that the server will listen to
    static int numResources; // Number of diferent resources
    static int numClients; // Number of different clients (threads) that will connect to the server
    static int numRequestsPerClient; // Number of requests to be received by each client
    bool initDataProvided;

    /**
     * Vérouille!
     */
    static pthread_mutex_t available_lock;
    static pthread_mutex_t accept_lock;

    static int sock; // Main server Socket File Descriptor
    static int timeout; // Maximum number of seconds that the server program will run
    static int requestProcessed; // Number of request already processed
    static int totalNumRequests; // Total number of request to be processed (numClients*numRequestPerClient)
    static bool *ClientsRunning;
    
    //Banker's Algorithm data structures (see the book for further details)
    static int *Available;
    static int **Max;
    static int **Allocation;
    static int **Need;

    // Results variables
    static int countAccepted; // Result counter for total acepted requests
    static int countOnWait; // Result counter for total request denied and put to wait
    static int countInvalid; // Result counter for total invalid requests
    static int countClientsDispatched; // Result counter for total clients correctly finished

    //Server threads
    int *realID; // Real ID of each thread (from 0 to numServerThreads-1)
    pthread_t *pt_tid; // The thread identifier
    pthread_attr_t *pt_attr; // Set of thread identifiers	

    //Function that will be called by every server thread
    static void *threadCode(void * param);

    //Function to write the Max values to a file
    void writeMaxToFile();

};

#endif // SERVERTHREADS_H