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/*
* Copyright (C) 2010 InvenSense Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
// C/C++ logging functions. See the logging documentation for API details.
//
// We'd like these to be available from C code (in case we import some from
// somewhere), so this has a C interface.
//
// The output will be correct when the log file is shared between multiple
// threads and/or multiple processes so long as the operating system
// supports O_APPEND. These calls have mutex-protected data structures
// and so are NOT reentrant. Do not use MPL_LOG in a signal handler.
*/
#ifndef _LIBS_CUTILS_MPL_LOG_H
#define _LIBS_CUTILS_MPL_LOG_H
#include <stdarg.h>
#ifdef ANDROID
#include <utils/Log.h> /* For the LOG macro */
#endif
#ifdef __KERNEL__
#include <linux/kernel.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
/* --------------------------------------------------------------------- */
/*
* Normally we strip MPL_LOGV (VERBOSE messages) from release builds.
* You can modify this (for example with "#define MPL_LOG_NDEBUG 0"
* at the top of your source file) to change that behavior.
*/
#define MPL_LOGV /* comment this out to enable VERBOSE level logging */
#ifndef MPL_LOG_NDEBUG
#ifdef NDEBUG
#define MPL_LOG_NDEBUG 1
#else
#define MPL_LOG_NDEBUG 0
#endif
#endif
#ifdef __KERNEL__
#define MPL_LOG_UNKNOWN MPL_LOG_VERBOSE
#define MPL_LOG_DEFAULT KERN_DEFAULT
#define MPL_LOG_VERBOSE KERN_CONT
#define MPL_LOG_DEBUG KERN_NOTICE
#define MPL_LOG_INFO KERN_INFO
#define MPL_LOG_WARN KERN_WARNING
#define MPL_LOG_ERROR KERN_ERR
#define MPL_LOG_SILENT MPL_LOG_VERBOSE
#else
/* Based off the log priorities in android
/system/core/include/android/log.h */
#define MPL_LOG_UNKNOWN (0)
#define MPL_LOG_DEFAULT (1)
#define MPL_LOG_VERBOSE (2)
#define MPL_LOG_DEBUG (3)
#define MPL_LOG_INFO (4)
#define MPL_LOG_WARN (5)
#define MPL_LOG_ERROR (6)
#define MPL_LOG_SILENT (8)
#endif
/*
* This is the local tag used for the following simplified
* logging macros. You can change this preprocessor definition
* before using the other macros to change the tag.
*/
#ifndef MPL_LOG_TAG
#ifdef __KERNEL__
#define MPL_LOG_TAG
#else
#define MPL_LOG_TAG NULL
#endif
#endif
/* --------------------------------------------------------------------- */
/*
* Simplified macro to send a verbose log message using the current MPL_LOG_TAG.
*/
#define MPL_LOGV
#ifndef MPL_LOGV
#if MPL_LOG_NDEBUG
#define MPL_LOGV(...) ((void)0)
#else
#define MPL_LOGV(...) ((void)MPL_LOG(LOG_VERBOSE, MPL_LOG_TAG, __VA_ARGS__))
#endif
#endif
#ifndef CONDITION
#define CONDITION(cond) ((cond) != 0)
#endif
#ifndef MPL_LOGV_IF
#if MPL_LOG_NDEBUG
#define MPL_LOGV_IF(cond, ...) ((void)0)
#else
#define MPL_LOGV_IF(cond, ...) \
((CONDITION(cond)) \
? ((void)MPL_LOG(LOG_VERBOSE, MPL_LOG_TAG, __VA_ARGS__)) \
: (void)0)
#endif
#endif
/*
* Simplified macro to send a debug log message using the current MPL_LOG_TAG.
*/
#ifndef MPL_LOGD
#define MPL_LOGD(...) ((void)MPL_LOG(LOG_DEBUG, MPL_LOG_TAG, __VA_ARGS__))
#endif
#ifndef MPL_LOGD_IF
#define MPL_LOGD_IF(cond, ...) \
((CONDITION(cond)) \
? ((void)MPL_LOG(LOG_DEBUG, MPL_LOG_TAG, __VA_ARGS__)) \
: (void)0)
#endif
/*
* Simplified macro to send an info log message using the current MPL_LOG_TAG.
*/
#ifndef MPL_LOGI
#define MPL_LOGI(...) ((void)MPL_LOG(LOG_INFO, MPL_LOG_TAG, __VA_ARGS__))
#endif
#ifndef MPL_LOGI_IF
#define MPL_LOGI_IF(cond, ...) \
((CONDITION(cond)) \
? ((void)MPL_LOG(LOG_INFO, MPL_LOG_TAG, __VA_ARGS__)) \
: (void)0)
#endif
/*
* Simplified macro to send a warning log message using the current MPL_LOG_TAG.
*/
#ifndef MPL_LOGW
#define MPL_LOGW(...) ((void)MPL_LOG(LOG_WARN, MPL_LOG_TAG, __VA_ARGS__))
#endif
#ifndef MPL_LOGW_IF
#define MPL_LOGW_IF(cond, ...) \
((CONDITION(cond)) \
? ((void)MPL_LOG(LOG_WARN, MPL_LOG_TAG, __VA_ARGS__)) \
: (void)0)
#endif
/*
* Simplified macro to send an error log message using the current MPL_LOG_TAG.
*/
#ifndef MPL_LOGE
#define MPL_LOGE(...) ((void)MPL_LOG(LOG_ERROR, MPL_LOG_TAG, __VA_ARGS__))
#endif
#ifndef MPL_LOGE_IF
#define MPL_LOGE_IF(cond, ...) \
((CONDITION(cond)) \
? ((void)MPL_LOG(LOG_ERROR, MPL_LOG_TAG, __VA_ARGS__)) \
: (void)0)
#endif
/* --------------------------------------------------------------------- */
/*
* Log a fatal error. If the given condition fails, this stops program
* execution like a normal assertion, but also generating the given message.
* It is NOT stripped from release builds. Note that the condition test
* is -inverted- from the normal assert() semantics.
*/
#define MPL_LOG_ALWAYS_FATAL_IF(cond, ...) \
((CONDITION(cond)) \
? ((void)android_printAssert(#cond, MPL_LOG_TAG, __VA_ARGS__)) \
: (void)0)
#define MPL_LOG_ALWAYS_FATAL(...) \
(((void)android_printAssert(NULL, MPL_LOG_TAG, __VA_ARGS__)))
/*
* Versions of MPL_LOG_ALWAYS_FATAL_IF and MPL_LOG_ALWAYS_FATAL that
* are stripped out of release builds.
*/
#if MPL_LOG_NDEBUG
#define MPL_LOG_FATAL_IF(cond, ...) ((void)0)
#define MPL_LOG_FATAL(...) ((void)0)
#else
#define MPL_LOG_FATAL_IF(cond, ...) MPL_LOG_ALWAYS_FATAL_IF(cond, __VA_ARGS__)
#define MPL_LOG_FATAL(...) MPL_LOG_ALWAYS_FATAL(__VA_ARGS__)
#endif
/*
* Assertion that generates a log message when the assertion fails.
* Stripped out of release builds. Uses the current MPL_LOG_TAG.
*/
#define MPL_LOG_ASSERT(cond, ...) MPL_LOG_FATAL_IF(!(cond), __VA_ARGS__)
/*#define MPL_LOG_ASSERT(cond) MPL_LOG_FATAL_IF(!(cond), "Assertion failed: " #cond) */
/* --------------------------------------------------------------------- */
/*
* Basic log message macro.
*
* Example:
* MPL_LOG(MPL_LOG_WARN, NULL, "Failed with error %d", errno);
*
* The second argument may be NULL or "" to indicate the "global" tag.
*/
#ifndef MPL_LOG
#define MPL_LOG(priority, tag, ...) \
MPL_LOG_PRI(priority, tag, __VA_ARGS__)
#endif
/*
* Log macro that allows you to specify a number for the priority.
*/
#ifndef MPL_LOG_PRI
#ifdef ANDROID
#define MPL_LOG_PRI(priority, tag, ...) \
LOG(priority, tag, __VA_ARGS__)
#elif defined __KERNEL__
#define MPL_LOG_PRI(priority, tag, ...) \
printk(MPL_##priority tag __VA_ARGS__)
#else
#define MPL_LOG_PRI(priority, tag, ...) \
_MLPrintLog(MPL_##priority, tag, __VA_ARGS__)
#endif
#endif
/*
* Log macro that allows you to pass in a varargs ("args" is a va_list).
*/
#ifndef MPL_LOG_PRI_VA
#ifdef ANDROID
#define MPL_LOG_PRI_VA(priority, tag, fmt, args) \
android_vprintLog(priority, NULL, tag, fmt, args)
#elif defined __KERNEL__
#define MPL_LOG_PRI_VA(priority, tag, fmt, args) \
vprintk(MPL_##priority tag fmt, args)
#else
#define MPL_LOG_PRI_VA(priority, tag, fmt, args) \
_MLPrintVaLog(priority, NULL, tag, fmt, args)
#endif
#endif
/* --------------------------------------------------------------------- */
/*
* ===========================================================================
*
* The stuff in the rest of this file should not be used directly.
*/
#ifndef ANDROID
int _MLPrintLog(int priority, const char *tag, const char *fmt, ...);
int _MLPrintVaLog(int priority, const char *tag, const char *fmt,
va_list args);
/* Final implementation of actual writing to a character device */
int _MLWriteLog(const char *buf, int buflen);
#endif
#ifdef __cplusplus
}
#endif
#endif /* _LIBS_CUTILS_MPL_LOG_H */
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