ThreadRWlock.h

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#ifndef GALOIS_THREAD_RW_LOCK_H
#define GALOIS_THREAD_RW_LOCK_H

#include "Galois/Runtime/ll/PaddedLock.h"
#include "Galois/Runtime/PerThreadStorage.h"

namespace Galois {
namespace Runtime {
namespace LL {

//FIXME: nothing in LL should depend on Runtime

class ThreadRWlock {

  typedef PaddedLock<true> Lock_ty;
  // typedef Galois::Runtime::LL::SimpleLock<true> Lock_ty;
  typedef PerThreadStorage<Lock_ty> PerThreadLock;

  PerThreadLock locks;

public:


  void readLock () {
    locks.getLocal ()->lock ();
  }

  void readUnlock () {
    locks.getLocal ()->unlock ();
  }

  void writeLock () {
    for (unsigned i = 0; i < locks.size (); ++i) {
      locks.getRemote (i)->lock ();
    }
  }

  void writeUnlock () {
    for (unsigned i = 0; i < locks.size (); ++i) {
      locks.getRemote (i)->unlock ();
    }
  }


};


} // end namespace LL
} // end namespace Runtime
} // end namespace Galois



#endif // GALOIS_THREAD_RW_LOCK_H

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