log.h revision 61c5c1b001573d91012fd18e670e262b414aa81b 
1/*
2 * Copyright (C) 2017 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef CHRE_UTIL_NANOAPP_LOG_H_
18#define CHRE_UTIL_NANOAPP_LOG_H_
19
20/**
21 * @file
22 * Logging macros for nanoapps. These macros allow injecting a LOG_TAG and
23 * compiling nanoapps with a minimum logging level (that is different than CHRE
24 * itself).
25 *
26 * The typical format for the LOG_TAG macro is: "[AppName]"
27 */
28
29#include "chre/util/log_common.h"
30
31#ifndef NANOAPP_MINIMUM_LOG_LEVEL
32#error "NANOAPP_MINIMUM_LOG_LEVEL must be defined"
33#endif  // NANOAPP_MINIMUM_LOG_LEVEL
34
35/*
36 * Supply a stub implementation of the LOGx macros when the build is
37 * configured with a minimum logging level that is above the requested level.
38 * Otherwise just map into the chreLog function with the appropriate level.
39 */
40
41#if NANOAPP_MINIMUM_LOG_LEVEL >= CHRE_LOG_LEVEL_ERROR
42#define LOGE(fmt, ...) chreLog(CHRE_LOG_ERROR, LOG_TAG " " fmt, ##__VA_ARGS__)
43#else
44#define LOGE(fmt, ...) chreLogNull(fmt, ##__VA_ARGS__)
45#endif
46
47#if NANOAPP_MINIMUM_LOG_LEVEL >= CHRE_LOG_LEVEL_WARN
48#define LOGW(fmt, ...) chreLog(CHRE_LOG_WARN, LOG_TAG " " fmt, ##__VA_ARGS__)
49#else
50#define LOGW(fmt, ...) chreLogNull(fmt, ##__VA_ARGS__)
51#endif
52
53#if NANOAPP_MINIMUM_LOG_LEVEL >= CHRE_LOG_LEVEL_INFO
54#define LOGI(fmt, ...) chreLog(CHRE_LOG_INFO, LOG_TAG " " fmt, ##__VA_ARGS__)
55#else
56#define LOGI(fmt, ...) chreLogNull(fmt, ##__VA_ARGS__)
57#endif
58
59#if NANOAPP_MINIMUM_LOG_LEVEL >= CHRE_LOG_LEVEL_DEBUG
60#define LOGD(fmt, ...) chreLog(CHRE_LOG_DEBUG, LOG_TAG " " fmt, ##__VA_ARGS__)
61#else
62#define LOGD(fmt, ...) chreLogNull(fmt, ##__VA_ARGS__)
63#endif
64
65// Apply printf-style compiler warnings to chreLog calls via GCC/clang
66#if defined(__GNUC__) || defined(__clang__)
67__attribute__((format(printf, 2, 3)))
68void chreLog(enum chreLogLevel level, const char *formatStr, ...);
69#endif
70
71#endif  // CHRE_UTIL_NANOAPP_LOG_H_
72