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/**
* @file
* Debug messages infrastructure
*/
/*
* Copyright (c) 2001-2004 Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
* This file is part of the lwIP TCP/IP stack.
*
* Author: Adam Dunkels <adam@sics.se>
*
*/
#ifndef LWIP_HDR_DEBUG_H
#define LWIP_HDR_DEBUG_H
#include "lwip/arch.h"
#include "lwip/opt.h"
/**
* @defgroup debugging_levels LWIP_DBG_MIN_LEVEL and LWIP_DBG_TYPES_ON values
* @ingroup lwip_opts_debugmsg
* @{
*/
/** @name Debug level (LWIP_DBG_MIN_LEVEL)
* @{
*/
/** Debug level: ALL messages*/
#define LWIP_DBG_LEVEL_ALL 0x00
/** Debug level: Warnings. bad checksums, dropped packets, ... */
#define LWIP_DBG_LEVEL_WARNING 0x01
/** Debug level: Serious. memory allocation failures, ... */
#define LWIP_DBG_LEVEL_SERIOUS 0x02
/** Debug level: Severe */
#define LWIP_DBG_LEVEL_SEVERE 0x03
/**
* @}
*/
#define LWIP_DBG_MASK_LEVEL 0x03
/* compatibility define only */
#define LWIP_DBG_LEVEL_OFF LWIP_DBG_LEVEL_ALL
/** @name Enable/disable debug messages completely (LWIP_DBG_TYPES_ON)
* @{
*/
/** flag for LWIP_DEBUGF to enable that debug message */
#define LWIP_DBG_ON 0x80U
/** flag for LWIP_DEBUGF to disable that debug message */
#define LWIP_DBG_OFF 0x00U
/**
* @}
*/
/** @name Debug message types (LWIP_DBG_TYPES_ON)
* @{
*/
/** flag for LWIP_DEBUGF indicating a tracing message (to follow program flow) */
#define LWIP_DBG_TRACE 0x40U
/** flag for LWIP_DEBUGF indicating a state debug message (to follow module states) */
#define LWIP_DBG_STATE 0x20U
/** flag for LWIP_DEBUGF indicating newly added code, not thoroughly tested yet */
#define LWIP_DBG_FRESH 0x10U
/** flag for LWIP_DEBUGF to halt after printing this debug message */
#define LWIP_DBG_HALT 0x08U
/**
* @}
*/
/**
* @}
*/
/**
* @defgroup lwip_assertions Assertion handling
* @ingroup lwip_opts_debug
* @{
*/
/**
* LWIP_NOASSERT: Disable LWIP_ASSERT checks:
* To disable assertions define LWIP_NOASSERT in arch/cc.h.
*/
#ifdef __DOXYGEN__
#define LWIP_NOASSERT
#undef LWIP_NOASSERT
#endif
/**
* @}
*/
#ifndef LWIP_NOASSERT
#define LWIP_ASSERT(message, assertion) do { if (!(assertion)) { \
LWIP_PLATFORM_ASSERT(message); }} while(0)
#else /* LWIP_NOASSERT */
#define LWIP_ASSERT(message, assertion)
#endif /* LWIP_NOASSERT */
#ifndef LWIP_ERROR
#ifndef LWIP_NOASSERT
#define LWIP_PLATFORM_ERROR(message) LWIP_PLATFORM_ASSERT(message)
#elif defined LWIP_DEBUG
#define LWIP_PLATFORM_ERROR(message) LWIP_PLATFORM_DIAG((message))
#else
#define LWIP_PLATFORM_ERROR(message)
#endif
/* if "expression" isn't true, then print "message" and execute "handler" expression */
#define LWIP_ERROR(message, expression, handler) do { if (!(expression)) { \
LWIP_PLATFORM_ERROR(message); handler;}} while(0)
#endif /* LWIP_ERROR */
/** Enable debug message printing, but only if debug message type is enabled
* AND is of correct type AND is at least LWIP_DBG_LEVEL.
*/
#ifdef __DOXYGEN__
#define LWIP_DEBUG
#undef LWIP_DEBUG
#endif
#ifdef LWIP_DEBUG
#define LWIP_DEBUGF(debug, message) do { \
if ( \
((debug) & LWIP_DBG_ON) && \
((debug) & LWIP_DBG_TYPES_ON) && \
((s16_t)((debug) & LWIP_DBG_MASK_LEVEL) >= LWIP_DBG_MIN_LEVEL)) { \
LWIP_PLATFORM_DIAG(message); \
if ((debug) & LWIP_DBG_HALT) { \
while(1); \
} \
} \
} while(0)
#else /* LWIP_DEBUG */
#define LWIP_DEBUGF(debug, message)
#endif /* LWIP_DEBUG */
#endif /* LWIP_HDR_DEBUG_H */
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