parking-lot/Information.cpp at master · sarahmonod/parking-lot · GitHub

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/*************************************************************************
                        Information -  description
                             -------------------
    date                 : Feb. 19 2014
    copyright            : (C) 2014 Yannick Marion & Gustave Monod
    e-mail               : yannick.marion@insa-lyon.fr
                           gustave.monod@insa-lyon.fr
*************************************************************************/

//---- Realization of the <Information> module (file Information.cpp) ----

/////////////////////////////////////////////////////////////////  INCLUDE
//--------------------------------------------------------- System include
#include <sys/sem.h>

//------------------------------------------------------- Personal include
#include "Information.h"
/////////////////////////////////////////////////////////////////  PRIVATE
//-------------------------------------------------------------- Constants
//------------------------------------------------------------------ Types

//------------------------------------------------------- Static variables

//------------------------------------------------------ Private functions


//static type name ( parameter list )
// How to use:
//
// Contract:
//
// Algorithm:
//
//{
//} //----- End of name

//////////////////////////////////////////////////////////////////  PUBLIC
//------------------------------------------------------- Public constants

int const RIGHTS = 0660;
char const PROGRAM_NAME[] = "./Parking";
char const FTOK_CHAR = '3';

unsigned int NB_CHAR_STATE = 18;

// Used for the shared memory:
size_t const SHM_SIZE = sizeof( struct ParkingLot );

// Mutex for the shared memory
struct sembuf const MUTEX_ACCESS = {0, -1, 0};
struct sembuf const MUTEX_FREE = {0, 1, 0};
int const MUTEX_NB = 1;
int const MUTEX_OK = 1;
int const MUTEX_KO = 0;

// Command message info for the mailbox:
int const ENTER_CMD_SIZE = sizeof( enum TypeUsager );
int const EXIT_CMD_SIZE = sizeof( unsigned int );

//------------------------------------------------------- Public functions

struct sembuf SemP ( short unsigned int noSem )
{
	struct sembuf result = {noSem, -1, 0};
	return result;
} //----- End of SemP

struct sembuf SemV ( short unsigned int noSem )
{
	struct sembuf result = {noSem, 1, 0};
	return result;
} //----- End of SemV