RWlock.h

Go to the documentation of this file.

#ifndef RWLOCK_H
#define RWLOCK_H 

#include  <iostream>
#include  <pthread.h>
#include  <stdio.h>

#include  "common.h"

using namespace Borealis;


class RWLock
{
  public:
    RWLock();

    void readlock( int32  id = 0 );

    void writelock( int32  id = 0 );

    void readunlock();

    void writeunlock();

  private:
    pthread_mutex_t      mutex;
    pthread_mutexattr_t  mutexattr;
    pthread_cond_t       writeOK;
    pthread_cond_t       readOK;

    int32  writers;
    int32  readers;
    int32  waiting;
};

#endif                            // RWLOCK_H

---