#ifndef COIN_SBMUTEX_H
#define COIN_SBMUTEX_H

/**************************************************************************\
 * Copyright (c) Kongsberg Oil & Gas Technologies AS
 * All rights reserved.
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 * notice, this list of conditions and the following disclaimer in the
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 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 * 
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\**************************************************************************/

#include <Inventor/SbBasic.h>
#include <Inventor/C/threads/mutex.h>

class SbMutex {
public:
  SbMutex(void) { this->mutex = cc_mutex_construct(); }
  ~SbMutex() { cc_mutex_destruct(this->mutex); }

  int lock(void) {
    cc_mutex_lock(this->mutex);
    /* Useless return, here just for compatibility with TGS'
       SbThreadMutex API: */
    return 0;
  }

  SbBool tryLock(void) {
    return cc_mutex_try_lock(this->mutex) == CC_OK;
  }

  int unlock(void) {
    cc_mutex_unlock(this->mutex);
    /* Useless return, here just for compatibility with TGS'
       SbThreadMutex API: */
    return 0;
  }

private:
  // FIXME: we need access to C mutex structur. Should we use friend,
  // or should we add a new public method to get to this structure?
  // pederb, 2002-06-26
  friend class SbCondVar;
  cc_mutex * mutex;
};


#ifndef COIN_INTERNAL
// For TGS Inventor compile-time compatibility.
#include <Inventor/threads/SbThreadAutoLock.h>
#endif // COIN_INTERNAL

#endif // !COIN_SBMUTEX_H
