log.h revision 812101357014f2e159a4e50b33e5285975a8faa5 
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/re.h>
30
31#include "chre/util/log_common.h"
32#include "chre/util/toolchain.h"
33
34#ifndef NANOAPP_MINIMUM_LOG_LEVEL
35#error "NANOAPP_MINIMUM_LOG_LEVEL must be defined"
36#endif  // NANOAPP_MINIMUM_LOG_LEVEL
37
38/*
39 * Supply a stub implementation of the LOGx macros when the build is
40 * configured with a minimum logging level that is above the requested level.
41 * Otherwise just map into the chreLog function with the appropriate level.
42 */
43
44#define CHRE_LOG(level, fmt, ...) \
45    do { \
46      CHRE_LOG_PREAMBLE \
47      chreLog(level, LOG_TAG " " fmt, ##__VA_ARGS__); \
48      CHRE_LOG_EPILOGUE \
49    } while (0)
50
51#if NANOAPP_MINIMUM_LOG_LEVEL >= CHRE_LOG_LEVEL_ERROR
52#define LOGE(fmt, ...) CHRE_LOG(CHRE_LOG_ERROR, fmt, ##__VA_ARGS__)
53#else
54#define LOGE(fmt, ...) CHRE_LOG_NULL(fmt, ##__VA_ARGS__)
55#endif
56
57#if NANOAPP_MINIMUM_LOG_LEVEL >= CHRE_LOG_LEVEL_WARN
58#define LOGW(fmt, ...) CHRE_LOG(CHRE_LOG_WARN, fmt, ##__VA_ARGS__)
59#else
60#define LOGW(fmt, ...) CHRE_LOG_NULL(fmt, ##__VA_ARGS__)
61#endif
62
63#if NANOAPP_MINIMUM_LOG_LEVEL >= CHRE_LOG_LEVEL_INFO
64#define LOGI(fmt, ...) CHRE_LOG(CHRE_LOG_INFO, fmt, ##__VA_ARGS__)
65#else
66#define LOGI(fmt, ...) CHRE_LOG_NULL(fmt, ##__VA_ARGS__)
67#endif
68
69#if NANOAPP_MINIMUM_LOG_LEVEL >= CHRE_LOG_LEVEL_DEBUG
70#define LOGD(fmt, ...) CHRE_LOG(CHRE_LOG_DEBUG, fmt, ##__VA_ARGS__)
71#else
72#define LOGD(fmt, ...) CHRE_LOG_NULL(fmt, ##__VA_ARGS__)
73#endif
74
75// Apply printf-style compiler warnings to chreLog calls
76CHRE_PRINTF_ATTR(2, 3)
77void chreLog(enum chreLogLevel level, const char *formatStr, ...);
78
79#endif  // CHRE_UTIL_NANOAPP_LOG_H_
80