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1/*
2 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without modification,
6 * are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice,
9 * this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright notice,
11 * this list of conditions and the following disclaimer in the documentation
12 * and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
19 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
21 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
24 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
25 * OF SUCH DAMAGE.
26 *
27 * This file is part of the lwIP TCP/IP stack.
28 *
29 * Author: Adam Dunkels <adam@sics.se>
30 *
31 */
32#ifndef __LWIP_DEBUG_H__
33#define __LWIP_DEBUG_H__
34
35#include "lwip/arch.h"
36
37/** lower two bits indicate debug level
38 * - 0 off
39 * - 1 warning
40 * - 2 serious
41 * - 3 severe
42 */
43#define LWIP_DBG_LEVEL_OFF 0x00
44#define LWIP_DBG_LEVEL_WARNING 0x01 /* bad checksums, dropped packets, ... */
45#define LWIP_DBG_LEVEL_SERIOUS 0x02 /* memory allocation failures, ... */
46#define LWIP_DBG_LEVEL_SEVERE 0x03
47#define LWIP_DBG_MASK_LEVEL 0x03
48
49/** flag for LWIP_DEBUGF to enable that debug message */
50#define LWIP_DBG_ON 0x80U
51/** flag for LWIP_DEBUGF to disable that debug message */
52#define LWIP_DBG_OFF 0x00U
53
54/** flag for LWIP_DEBUGF indicating a tracing message (to follow program flow) */
55#define LWIP_DBG_TRACE 0x40U
56/** flag for LWIP_DEBUGF indicating a state debug message (to follow module states) */
57#define LWIP_DBG_STATE 0x20U
58/** flag for LWIP_DEBUGF indicating newly added code, not thoroughly tested yet */
59#define LWIP_DBG_FRESH 0x10U
60/** flag for LWIP_DEBUGF to halt after printing this debug message */
61#define LWIP_DBG_HALT 0x08U
62
63#ifndef LWIP_NOASSERT
64#define LWIP_ASSERT(x,y) do { if(!(y)) LWIP_PLATFORM_ASSERT(x); } while(0)
65#else /* LWIP_NOASSERT */
66#define LWIP_ASSERT(x,y)
67#endif /* LWIP_NOASSERT */
68
69/** print "m" message only if "e" is true, and execute "h" expression */
70#ifndef LWIP_ERROR
71#define LWIP_ERROR(m,e,h) do { if (!(e)) { LWIP_PLATFORM_ASSERT(m); h;}} while(0)
72#endif /* LWIP_ERROR */
73
74#ifdef LWIP_DEBUG
75/** print debug message only if debug message type is enabled...
76 * AND is of correct type AND is at least LWIP_DBG_LEVEL
77 */
78#define LWIP_DEBUGF(debug,x) do { \
79 if ( \
80 ((debug) & LWIP_DBG_ON) && \
81 ((debug) & LWIP_DBG_TYPES_ON) && \
82 ((s16_t)((debug) & LWIP_DBG_MASK_LEVEL) >= LWIP_DBG_MIN_LEVEL)) { \
83 LWIP_PLATFORM_DIAG(x); \
84 if ((debug) & LWIP_DBG_HALT) { \
85 while(1); \
86 } \
87 } \
88 } while(0)
89
90#else /* LWIP_DEBUG */
91#define LWIP_DEBUGF(debug,x)
92#endif /* LWIP_DEBUG */
93
94#endif /* __LWIP_DEBUG_H__ */
95
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