JasPer: jas_log.h Source File

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jas_log.h
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1/*
2 * Copyright (c) 2001-2002 Michael David Adams.
3 * All rights reserved.
4 */
5
6/* __START_OF_JASPER_LICENSE__
7 *
8 * JasPer License Version 2.0
9 *
10 * Copyright (c) 2001-2006 Michael David Adams
11 * Copyright (c) 1999-2000 Image Power, Inc.
12 * Copyright (c) 1999-2000 The University of British Columbia
13 *
14 * All rights reserved.
15 *
16 * Permission is hereby granted, free of charge, to any person (the
17 * "User") obtaining a copy of this software and associated documentation
18 * files (the "Software"), to deal in the Software without restriction,
19 * including without limitation the rights to use, copy, modify, merge,
20 * publish, distribute, and/or sell copies of the Software, and to permit
21 * persons to whom the Software is furnished to do so, subject to the
22 * following conditions:
23 *
24 * 1. The above copyright notices and this permission notice (which
25 * includes the disclaimer below) shall be included in all copies or
26 * substantial portions of the Software.
27 *
28 * 2. The name of a copyright holder shall not be used to endorse or
29 * promote products derived from the Software without specific prior
30 * written permission.
31 *
32 * THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS
33 * LICENSE. NO USE OF THE SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER
34 * THIS DISCLAIMER. THE SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS
35 * "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
36 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
37 * PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. IN NO
38 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL
39 * INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING
40 * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
41 * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
42 * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. NO ASSURANCES ARE
43 * PROVIDED BY THE COPYRIGHT HOLDERS THAT THE SOFTWARE DOES NOT INFRINGE
44 * THE PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OF ANY OTHER ENTITY.
45 * EACH COPYRIGHT HOLDER DISCLAIMS ANY LIABILITY TO THE USER FOR CLAIMS
46 * BROUGHT BY ANY OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL
47 * PROPERTY RIGHTS OR OTHERWISE. AS A CONDITION TO EXERCISING THE RIGHTS
48 * GRANTED HEREUNDER, EACH USER HEREBY ASSUMES SOLE RESPONSIBILITY TO SECURE
49 * ANY OTHER INTELLECTUAL PROPERTY RIGHTS NEEDED, IF ANY. THE SOFTWARE
50 * IS NOT FAULT-TOLERANT AND IS NOT INTENDED FOR USE IN MISSION-CRITICAL
51 * SYSTEMS, SUCH AS THOSE USED IN THE OPERATION OF NUCLEAR FACILITIES,
52 * AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL
53 * SYSTEMS, DIRECT LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH
54 * THE FAILURE OF THE SOFTWARE OR SYSTEM COULD LEAD DIRECTLY TO DEATH,
55 * PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH
56 * RISK ACTIVITIES"). THE COPYRIGHT HOLDERS SPECIFICALLY DISCLAIM ANY
57 * EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES.
58 *
59 * __END_OF_JASPER_LICENSE__
60 */
61
66
67#ifndef JAS_LOG_H
68#define JAS_LOG_H
69
70/******************************************************************************\
71* Includes.
72\******************************************************************************/
73
74/* The configuration header file should be included first. */
75#include <jasper/jas_config.h>
76
77#include <stdio.h>
78#include <stdarg.h>
79
80#ifdef __cplusplus
81extern "C" {
82#endif
83
88
89/******************************************************************************\
90* Macros and functions.
91\******************************************************************************/
92
94#define JAS_LOGTYPE_CLASS_NULL 0
96#define JAS_LOGTYPE_CLASS_ERROR 1
98#define JAS_LOGTYPE_CLASS_WARN 2
100#define JAS_LOGTYPE_CLASS_INFO 3
102#define JAS_LOGTYPE_CLASS_DEBUG 4
103#define JAS_LOGTYPE_NUM_CLASSES 5
104
105#define JAS_LOGTYPE_MAX_PRIORITY 16384
106
107// NOTE: without the @struct, jas_logtype_t autolinks are not generated
112typedef unsigned int jas_logtype_t;
113
117 typedef int (jas_vlogmsgf_t)(jas_logtype_t, const char *, va_list);
118
122 static inline jas_logtype_t jas_logtype_init(int clas, int priority)
123{
124 assert(clas >= 0 && clas < JAS_LOGTYPE_NUM_CLASSES);
125 assert(priority >= 0 && priority <= JAS_LOGTYPE_MAX_PRIORITY);
126 return (clas & 0xf) | (priority << 4);
127}
128
132 static inline int jas_logtype_getclass(jas_logtype_t type)
133{
134 return type & 0xf;
135}
136
140 static inline int jas_logtype_getpriority(jas_logtype_t type)
141{
142 return type >> 4;
143}
144
148JAS_EXPORT
149int jas_vlogmsgf(jas_logtype_t type, const char *fmt, va_list ap);
150
154JAS_EXPORT
155int jas_vlogmsgf_stderr(jas_logtype_t type, const char *fmt, va_list ap);
156
160JAS_EXPORT
161int jas_vlogmsgf_discard(jas_logtype_t type, const char *fmt, va_list ap);
162
166
167#ifdef __cplusplus
168}
169#endif
170
171#endif
jas_vlogmsgf_discard
JAS_EXPORT int jas_vlogmsgf_discard(jas_logtype_t type, const char *fmt, va_list ap)
Output a log message to nowhere (i.e., discard the message).
Definition jas_debug.c:218
jas_vlogmsgf_t
int jas_vlogmsgf_t(jas_logtype_t, const char *, va_list)
Type used for formatted message logging function.
Definition jas_log.h:117
jas_logtype_getclass
static int jas_logtype_getclass(jas_logtype_t type)
Get the class of a logtype.
Definition jas_log.h:132
jas_logtype_init
static jas_logtype_t jas_logtype_init(int clas, int priority)
Create an instance of a logtype.
Definition jas_log.h:122
jas_vlogmsgf_stderr
JAS_EXPORT int jas_vlogmsgf_stderr(jas_logtype_t type, const char *fmt, va_list ap)
Output a log message to standard error.
Definition jas_debug.c:181
jas_logtype_getpriority
static int jas_logtype_getpriority(jas_logtype_t type)
Get the priority of a logtype.
Definition jas_log.h:140
jas_vlogmsgf
JAS_EXPORT int jas_vlogmsgf(jas_logtype_t type, const char *fmt, va_list ap)
Print formatted log message.
Definition jas_debug.c:171
jas_logtype_t
Type used for the log type.