/*
 * Project 3 - Shared memory and semaphores.
 * Dr. Silaghi's Operating System Concepts.
 * common.h - Common header file shared between daemon and client apps.
 * By Michael Rywalt - 2569
 */
#ifndef _COMMON_H_
#define _COMMON_H_

#include "memory.h"
#include "semaphore.h"

/* Variables used for critical section. */
extern int iSemaphoreId;
extern struct sembuf WaitMutex;
extern struct sembuf SignalMutex;

#define PROJECT         "Project3"
#define PROJECT_KEY     "/tmp"
#define PROJECT_ID      'M'

/* Daemon exit error codes. */
#define EXIT_OK         (0)
#define EXIT_ERROR      (1)

/*
 * If we're being compiled against the daemon,
 * set up the following definitions.
 */
#ifdef PROJECT_DAEMON

#ifndef EXIT
#define EXIT    DestroyDaemon
#endif

/*
 * Otherwise, if we're being compiled against
 * the client application, or any other, set up
 * the following definitions.
 */
#else

#ifndef EXIT
#define EXIT	exit
#endif

#endif

#endif /* _COMMON_H_ */