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#ifndef INCLUDED_CANVAS_DEBUG_HXX
#define INCLUDED_CANVAS_DEBUG_HXX

// shared_ptr debugging
// --------------------

#ifdef BOOST_SP_ENABLE_DEBUG_HOOKS

# include <sal/config.h>
# include <boost/shared_ptr.hpp>

::std::size_t find_unreachable_objects( bool );

# ifdef VERBOSE
#  include <osl/diagnose.h>
#  define SHARED_PTR_LEFTOVERS(a) OSL_TRACE("%s\n%s: Unreachable objects still use %d bytes\n", \
                                            BOOST_CURRENT_FUNCTION, a, \
                                            find_unreachable_objects(true) )
# else
/** This macro shows how much memory is still used by shared_ptrs

	Use this macro at places in the code where normally all shared_ptr
    objects should have been deleted. You'll get the number of bytes
    still contained in those objects, which quite possibly are prevented
    from deletion by circular references.
 */
#  define SHARED_PTR_LEFTOVERS(a) OSL_TRACE("%s\n%s: Unreachable objects still use %d bytes\n", \
                                            BOOST_CURRENT_FUNCTION, a, \
                                            find_unreachable_objects(false) )
# endif

#else

# define SHARED_PTR_LEFTOVERS(a) ((void)0)

#endif

#endif // ! defined(INCLUDED_CANVAS_DEBUG_HXX)