lock_guard.h

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// AUTOMATICALLY GENERATED -- DO NOT EDIT!         -*- c++ -*-

#ifndef lock_guard_h
#define lock_guard_h

//
// INTERFACE definition follows 
//


// 
// Lock_guard: a guard object using a lock such as helping_lock_t
// 
template<typename LOCK>
class Lock_guard
{
  LOCK *_lock;

public:  
  inline Lock_guard(LOCK *l);
  
  inline ~Lock_guard();
  
  inline bool was_set(void);
};

//
// IMPLEMENTATION of inline functions (and needed classes)
//




template<typename LOCK> inline Lock_guard<LOCK>::Lock_guard(LOCK *l)
  : _lock(l)
{
  if (_lock->test_and_set())
    _lock = 0;                  // Was locked already -- avoid unlock.
}



template<typename LOCK> inline Lock_guard<LOCK>::~Lock_guard()
{
  if (_lock)
    _lock->clear();
}



template<typename LOCK> inline bool
Lock_guard<LOCK>::was_set(void)
{
  return !_lock;
}

#endif // lock_guard_h

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