2013-02-16 16:14:39 -08:00

44 lines
902 B
C++

#ifndef MMFMUTEX_H
#define MMFMUTEX_H
#ifndef WIN32
#include <sys/types.h> // moved before sys/shm.h for freeBSD
#include <sys/shm.h>
#include <sys/ipc.h>
#include <sys/sem.h>
#include <semaphore.h>
#include <pthread.h>
#include <unistd.h>
#include <assert.h>
#include "../common/types.h"
#include "MMF.h"
// the manuals say you have to define this struct your self.
#if !defined FREEBSD || defined __NetBSD__ // for BSDs
union semun
{
int val;
struct semid_ds* buf;
unsigned short int *array;
struct seminfo *__buf;
};
#endif // for freeBSD
class MMFMutex
{
public:
MMFMutex(int iIndex);
virtual ~MMFMutex();
bool Lock( uint32 dwTimeout = 0 );
void Release(const MMF*);
protected:
int m_id;
key_t m_key;
pthread_t m_owner;
sem_t m_semaphore;
int m_recursive_count;
};
#endif //!WIN32
#endif