/* Copyright 2010, University Corporation for Atmospheric Research. See
   COPYRIGHT file for copying and redistribution conditions.

   This file is part of netcdf-4, a netCDF-like interface for HDF5, or
   a HDF5 backend for netCDF, depending on your point of view.

   This file contains macros and prototyes relating to logging.

   $Id: nc_logging.h,v 1.1 2010/06/01 15:34:49 ed Exp $
*/

#ifndef _NCLOGGING_
#define _NCLOGGING_

#include <stdlib.h>
#include <assert.h>

#ifdef LOGGING

/* To log something... */
void nc_log(int severity, const char *fmt, ...);
void nc_log_hdf5(void);

#define LOG(e) nc_log e

/* To log based on error code, and set retval. */
#define BAIL2(e) do { \
retval = e; \
LOG((0, "file %s, line %d.\n%s", __FILE__, __LINE__, nc_strerror(e))); \
nc_log_hdf5(); \
} while (0) 

/* To log an error message, set retval, and jump to exit. */
#define BAIL(e) do { \
BAIL2(e); \
goto exit; \
} while (0) 

/* To set retval and jump to exit, without logging error message. */
#define BAIL_QUIET(e) do { \
retval = e; \
goto exit; \
} while (0) 

#else

/* These definitions will be used unless LOGGING is defined. */
#define LOG(e)
#define BAIL(e) do { \
retval = e; \
goto exit; \
} while (0)
#define BAIL_QUIET BAIL
#define BAIL2(e) do { \
goto exit; \
} while (0)
#define nc_set_log_level(e)
#endif

#endif /* _NCLOGGING_ */