/************************************************** POSIX Thread Mutex Header File                 ** (C) 1999-2002 The Botan Project                **************************************************/#include <botan/mutex.h>#ifndef BOTAN_EXT_MUTEX_PTHREAD_H__#define BOTAN_EXT_MUTEX_PTHREAD_H__namespace Botan {/************************************************** Pthread Mutex                                  **************************************************/class Pthread_Mutex : public Mutex   {   public:      void lock();      void unlock();      Mutex* clone() const { return new Pthread_Mutex; }      Pthread_Mutex();      ~Pthread_Mutex();   private:      struct mutex_wrapper* mutex;   };}#endif