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mbed_debug.h
1 /* mbed Microcontroller Library
2  * Copyright (c) 2006-2019 ARM Limited
3  * SPDX-License-Identifier: Apache-2.0
4  *
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17 #ifndef MBED_DEBUG_H
18 #define MBED_DEBUG_H
19 #if DEVICE_STDIO_MESSAGES
20 #include <stdio.h>
21 #include <stdarg.h>
22 #endif
23 #include "platform/mbed_toolchain.h"
24 
25 #ifdef __cplusplus
26 extern "C" {
27 #endif
28 
29 /** \addtogroup platform-public-api */
30 /** @{*/
31 
32 /**
33  * \defgroup platform_debug Debug functions
34  * @{
35  */
36 
37 static inline void debug(const char *format, ...) MBED_PRINTF(1, 2);
38 static inline void debug_if(int condition, const char *format, ...) MBED_PRINTF(2, 3);
39 
40 /** Output a debug message
41  *
42  * @param format printf-style format string, followed by variables
43  */
44 static inline void debug(const char *format, ...)
45 {
46 #if DEVICE_STDIO_MESSAGES && !defined(NDEBUG)
47  va_list args;
48  va_start(args, format);
49  vfprintf(stderr, format, args);
50  va_end(args);
51 #endif
52 }
53 
54 
55 /** Conditionally output a debug message
56  *
57  * NOTE: If the condition is constant false (== 0) and the compiler optimization
58  * level is greater than 0, then the whole function will be compiled away.
59  *
60  * @param condition output only if condition is true (!= 0)
61  * @param format printf-style format string, followed by variables
62  */
63 static inline void debug_if(int condition, const char *format, ...)
64 {
65 #if DEVICE_STDIO_MESSAGES && !defined(NDEBUG)
66  if (condition) {
67  va_list args;
68  va_start(args, format);
69  vfprintf(stderr, format, args);
70  va_end(args);
71  }
72 #endif
73 }
74 
75 
76 #ifdef __cplusplus
77 }
78 #endif
79 
80 #endif
81 
82 /**@}*/
83 
84 /**@}*/
85 
debug_if
static void static void debug_if(int condition, const char *format,...) MBED_PRINTF(2
Conditionally output a debug message.
Definition: mbed_debug.h:63
debug
static void debug(const char *format,...) MBED_PRINTF(1
Output a debug message.
Definition: mbed_debug.h:44
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