cpp_utils/test/main_scopedLock.cpp

#include <iostream>
#include <stdexcept>

#include <pthread.h>
pthread_mutex_t p_mutex;

// #include <boost/thread/mutex.hpp>
// boost::mutex b_mutex;

#define TRACE std::cout << __FILE__ << " @ " << __PRETTY_FUNCTION__ << ":" <<  __LINE__ << std::endl;


class ScopedLock
{

public:

  ScopedLock(pthread_mutex_t & mutex) : m_mutex(mutex)
  {
    TRACE;
    pthread_mutex_lock( &m_mutex );
  }


  ~ScopedLock(void )
  {
   TRACE;
    pthread_mutex_unlock( &m_mutex );
  }

private:

  pthread_mutex_t& m_mutex;

};


void fv ()
{
  ScopedLock sl(p_mutex);

  throw std::logic_error("p_thread stuff");
}


// void fv2 ()
// {
//   boost::mutex::scoped_lock lock(&b_mutex);
// 
//   throw std::logic_error("boost_thread stuff");
// }


int main()
{
  pthread_mutex_init( &p_mutex, NULL );
  try {
    fv();
  } catch (...) {
    TRACE;

    if (pthread_mutex_trylock( &p_mutex) == 0 ) {
//       std::cout << "pthread mutex is OK, unlocked " << std::endl;
//       pthread_mutex_unlock( &p_mutex );
    } else {
//       std::cout << "pthread mutex is STILL LOCKED!" << std::endl;
    }
  }
  pthread_mutex_destroy( &p_mutex );


//   try {
//     fv2();
//   } catch (...) {
//     TRACE;
//     if ( b_mutex.try_lock() == true ) {
//       std::cout << "boost mutex is OK, unlocked " << std::endl;
//       b_mutex.unlock();
//     } else {
//       std::cout << "boost mutex is STILL LOCKED!" << std::endl;
//     }
//   }

  return 0;
}