208 lines
4.7 KiB
C
208 lines
4.7 KiB
C
//
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// Copyright 2005 The Android Open Source Project
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//
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// C/C++ logging functions. See the logging documentation for API details.
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//
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// We'd like these to be available from C code (in case we import some from
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// somewhere), so this has a C interface.
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//
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// The output will be correct when the log file is shared between multiple
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// threads and/or multiple processes so long as the operating system
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// supports O_APPEND. These calls have mutex-protected data structures
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// and so are NOT reentrant. Do not use LOG in a signal handler.
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//
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#ifndef _MINZIP_LOG_H
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#define _MINZIP_LOG_H
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#include <stdio.h>
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// ---------------------------------------------------------------------
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/*
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* Normally we strip LOGV (VERBOSE messages) from release builds.
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* You can modify this (for example with "#define LOG_NDEBUG 0"
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* at the top of your source file) to change that behavior.
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*/
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#ifndef LOG_NDEBUG
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#ifdef NDEBUG
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#define LOG_NDEBUG 1
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#else
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#define LOG_NDEBUG 0
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#endif
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#endif
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/*
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* This is the local tag used for the following simplified
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* logging macros. You can change this preprocessor definition
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* before using the other macros to change the tag.
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*/
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#ifndef LOG_TAG
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#define LOG_TAG NULL
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#endif
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// ---------------------------------------------------------------------
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/*
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* Simplified macro to send a verbose log message using the current LOG_TAG.
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*/
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#ifndef LOGV
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#if LOG_NDEBUG
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#define LOGV(...) ((void)0)
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#else
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#define LOGV(...) ((void)LOG(LOG_VERBOSE, LOG_TAG, __VA_ARGS__))
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#endif
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#endif
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#define CONDITION(cond) (__builtin_expect((cond)!=0, 0))
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#ifndef LOGV_IF
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#if LOG_NDEBUG
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#define LOGV_IF(cond, ...) ((void)0)
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#else
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#define LOGV_IF(cond, ...) \
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( (CONDITION(cond)) \
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? ((void)LOG(LOG_VERBOSE, LOG_TAG, __VA_ARGS__)) \
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: (void)0 )
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#endif
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#endif
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#define LOGVV LOGV
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#define LOGVV_IF LOGV_IF
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/*
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* Simplified macro to send a debug log message using the current LOG_TAG.
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*/
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#ifndef LOGD
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#define LOGD(...) ((void)LOG(LOG_DEBUG, LOG_TAG, __VA_ARGS__))
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#endif
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#ifndef LOGD_IF
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#define LOGD_IF(cond, ...) \
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( (CONDITION(cond)) \
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? ((void)LOG(LOG_DEBUG, LOG_TAG, __VA_ARGS__)) \
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: (void)0 )
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#endif
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/*
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* Simplified macro to send an info log message using the current LOG_TAG.
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*/
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#ifndef LOGI
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#define LOGI(...) ((void)LOG(LOG_INFO, LOG_TAG, __VA_ARGS__))
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#endif
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#ifndef LOGI_IF
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#define LOGI_IF(cond, ...) \
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( (CONDITION(cond)) \
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? ((void)LOG(LOG_INFO, LOG_TAG, __VA_ARGS__)) \
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: (void)0 )
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#endif
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/*
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* Simplified macro to send a warning log message using the current LOG_TAG.
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*/
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#ifndef LOGW
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#define LOGW(...) ((void)LOG(LOG_WARN, LOG_TAG, __VA_ARGS__))
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#endif
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#ifndef LOGW_IF
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#define LOGW_IF(cond, ...) \
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( (CONDITION(cond)) \
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? ((void)LOG(LOG_WARN, LOG_TAG, __VA_ARGS__)) \
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: (void)0 )
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#endif
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/*
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* Simplified macro to send an error log message using the current LOG_TAG.
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*/
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#ifndef LOGE
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#define LOGE(...) ((void)LOG(LOG_ERROR, LOG_TAG, __VA_ARGS__))
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#endif
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#ifndef LOGE_IF
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#define LOGE_IF(cond, ...) \
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( (CONDITION(cond)) \
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? ((void)LOG(LOG_ERROR, LOG_TAG, __VA_ARGS__)) \
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: (void)0 )
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#endif
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/*
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* Conditional based on whether the current LOG_TAG is enabled at
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* verbose priority.
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*/
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#ifndef IF_LOGV
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#if LOG_NDEBUG
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#define IF_LOGV() if (false)
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#else
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#define IF_LOGV() IF_LOG(LOG_VERBOSE, LOG_TAG)
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#endif
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#endif
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/*
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* Conditional based on whether the current LOG_TAG is enabled at
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* debug priority.
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*/
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#ifndef IF_LOGD
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#define IF_LOGD() IF_LOG(LOG_DEBUG, LOG_TAG)
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#endif
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/*
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* Conditional based on whether the current LOG_TAG is enabled at
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* info priority.
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*/
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#ifndef IF_LOGI
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#define IF_LOGI() IF_LOG(LOG_INFO, LOG_TAG)
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#endif
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/*
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* Conditional based on whether the current LOG_TAG is enabled at
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* warn priority.
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*/
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#ifndef IF_LOGW
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#define IF_LOGW() IF_LOG(LOG_WARN, LOG_TAG)
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#endif
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/*
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* Conditional based on whether the current LOG_TAG is enabled at
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* error priority.
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*/
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#ifndef IF_LOGE
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#define IF_LOGE() IF_LOG(LOG_ERROR, LOG_TAG)
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#endif
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// ---------------------------------------------------------------------
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/*
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* Basic log message macro.
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*
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* Example:
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* LOG(LOG_WARN, NULL, "Failed with error %d", errno);
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*
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* The second argument may be NULL or "" to indicate the "global" tag.
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*
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* Non-gcc probably won't have __FUNCTION__. It's not vital. gcc also
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* offers __PRETTY_FUNCTION__, which is rather more than we need.
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*/
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#ifndef LOG
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#define LOG(priority, tag, ...) \
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LOG_PRI(ANDROID_##priority, tag, __VA_ARGS__)
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#endif
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/*
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* Log macro that allows you to specify a number for the priority.
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*/
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#ifndef LOG_PRI
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#define LOG_PRI(priority, tag, ...) \
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printf(tag ": " __VA_ARGS__)
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#endif
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/*
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* Conditional given a desired logging priority and tag.
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*/
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#ifndef IF_LOG
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#define IF_LOG(priority, tag) \
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if (1)
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#endif
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#endif // _MINZIP_LOG_H
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