debug.h

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/*
 * Copyright (C) 2013 Alexander Zimmermann <alexander.zimmermann@netapp.com>
 * Copyright (C) 2010-2013 Christian Samsel <christian.samsel@rwth-aachen.de>
 * Copyright (C) 2009 Tim Kosse <tim.kosse@gmx.de>
 * Copyright (C) 2007-2008 Daniel Schaffrath <daniel.schaffrath@mac.com>
 *
 * This file is part of Flowgrind.
 *
 * Flowgrind is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Flowgrind is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Flowgrind.  If not, see <http://www.gnu.org/licenses/>.
 *
 */
 
#ifndef _DEBUG_H_
#define _DEBUG_H_
 
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif /* HAVE_CONFIG_H */
 
#ifdef DEBUG
 
#include <limits.h>
#include <pthread.h>
 
#define DEBUG_MSG(LVL, MSG, ...) do {                                        \
        char *timestamp = NULL;                                              \
        debug_timestamp(&timestamp);                                         \
        if (debug_level >= LVL)                                              \
                fprintf(stderr, "%s %s:%d  [%d/%d] " MSG "\n",               \
                        timestamp, __FUNCTION__, __LINE__, getpid(),         \
                        (unsigned)pthread_self()%USHRT_MAX, ##__VA_ARGS__);  \
                free(timestamp);                                             \
} while (0)
 
unsigned debug_level;
 
void decrease_debuglevel(void);
 
void increase_debuglevel(void);
 
int debug_timestamp(char **resultp);
 
#else /* DEBUG */
 
#define DEBUG_MSG(LVL, MSG, ...) do {} while(0)
 
#endif /* DEBUG */
 
#endif /* _DEBUG_H_ */