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483 lines
12 KiB
C
483 lines
12 KiB
C
/*
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* Copyright (C) 2005 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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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 _LIBS_CUTILS_LOG_H
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#define _LIBS_CUTILS_LOG_H
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#include <stdio.h>
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#include <time.h>
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#include <sys/types.h>
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#include <unistd.h>
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#ifdef HAVE_PTHREADS
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#include <pthread.h>
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#endif
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#include <stdarg.h>
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#include <cutils/uio.h>
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#include <cutils/logd.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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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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/*
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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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/*
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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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* Simplified macro to send a verbose system log message using the current LOG_TAG.
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*/
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#ifndef SLOGV
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#if LOG_NDEBUG
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#define SLOGV(...) ((void)0)
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#else
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#define SLOGV(...) ((void)__android_log_buf_print(LOG_ID_SYSTEM, ANDROID_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 SLOGV_IF
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#if LOG_NDEBUG
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#define SLOGV_IF(cond, ...) ((void)0)
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#else
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#define SLOGV_IF(cond, ...) \
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( (CONDITION(cond)) \
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? ((void)__android_log_buf_print(LOG_ID_SYSTEM, ANDROID_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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/*
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* Simplified macro to send a debug system log message using the current LOG_TAG.
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*/
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#ifndef SLOGD
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#define SLOGD(...) ((void)__android_log_buf_print(LOG_ID_SYSTEM, ANDROID_LOG_DEBUG, LOG_TAG, __VA_ARGS__))
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#endif
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#ifndef SLOGD_IF
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#define SLOGD_IF(cond, ...) \
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( (CONDITION(cond)) \
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? ((void)__android_log_buf_print(LOG_ID_SYSTEM, ANDROID_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 system log message using the current LOG_TAG.
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*/
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#ifndef SLOGI
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#define SLOGI(...) ((void)__android_log_buf_print(LOG_ID_SYSTEM, ANDROID_LOG_INFO, LOG_TAG, __VA_ARGS__))
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#endif
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#ifndef SLOGI_IF
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#define SLOGI_IF(cond, ...) \
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( (CONDITION(cond)) \
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? ((void)__android_log_buf_print(LOG_ID_SYSTEM, ANDROID_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 system log message using the current LOG_TAG.
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*/
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#ifndef SLOGW
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#define SLOGW(...) ((void)__android_log_buf_print(LOG_ID_SYSTEM, ANDROID_LOG_WARN, LOG_TAG, __VA_ARGS__))
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#endif
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#ifndef SLOGW_IF
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#define SLOGW_IF(cond, ...) \
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( (CONDITION(cond)) \
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? ((void)__android_log_buf_print(LOG_ID_SYSTEM, ANDROID_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 system log message using the current LOG_TAG.
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*/
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#ifndef SLOGE
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#define SLOGE(...) ((void)__android_log_buf_print(LOG_ID_SYSTEM, ANDROID_LOG_ERROR, LOG_TAG, __VA_ARGS__))
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#endif
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#ifndef SLOGE_IF
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#define SLOGE_IF(cond, ...) \
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( (CONDITION(cond)) \
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? ((void)__android_log_buf_print(LOG_ID_SYSTEM, ANDROID_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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/*
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* Log a fatal error. If the given condition fails, this stops program
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* execution like a normal assertion, but also generating the given message.
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* It is NOT stripped from release builds. Note that the condition test
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* is -inverted- from the normal assert() semantics.
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*/
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#ifndef LOG_ALWAYS_FATAL_IF
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#define LOG_ALWAYS_FATAL_IF(cond, ...) \
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( (CONDITION(cond)) \
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? ((void)android_printAssert(#cond, LOG_TAG, ## __VA_ARGS__)) \
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: (void)0 )
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#endif
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#ifndef LOG_ALWAYS_FATAL
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#define LOG_ALWAYS_FATAL(...) \
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( ((void)android_printAssert(NULL, LOG_TAG, ## __VA_ARGS__)) )
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#endif
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/*
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* Versions of LOG_ALWAYS_FATAL_IF and LOG_ALWAYS_FATAL that
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* are stripped out of release builds.
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*/
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#if LOG_NDEBUG
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#ifndef LOG_FATAL_IF
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#define LOG_FATAL_IF(cond, ...) ((void)0)
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#endif
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#ifndef LOG_FATAL
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#define LOG_FATAL(...) ((void)0)
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#endif
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#else
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#ifndef LOG_FATAL_IF
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#define LOG_FATAL_IF(cond, ...) LOG_ALWAYS_FATAL_IF(cond, ## __VA_ARGS__)
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#endif
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#ifndef LOG_FATAL
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#define LOG_FATAL(...) LOG_ALWAYS_FATAL(__VA_ARGS__)
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#endif
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#endif
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/*
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* Assertion that generates a log message when the assertion fails.
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* Stripped out of release builds. Uses the current LOG_TAG.
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*/
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#ifndef LOG_ASSERT
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#define LOG_ASSERT(cond, ...) LOG_FATAL_IF(!(cond), ## __VA_ARGS__)
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//#define LOG_ASSERT(cond) LOG_FATAL_IF(!(cond), "Assertion failed: " #cond)
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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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#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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android_printLog(priority, tag, __VA_ARGS__)
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#endif
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/*
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* Log macro that allows you to pass in a varargs ("args" is a va_list).
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*/
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#ifndef LOG_PRI_VA
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#define LOG_PRI_VA(priority, tag, fmt, args) \
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android_vprintLog(priority, NULL, tag, fmt, 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 (android_testLog(ANDROID_##priority, tag))
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#endif
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// ---------------------------------------------------------------------
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/*
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* Event logging.
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*/
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/*
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* Event log entry types. These must match up with the declarations in
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* java/android/android/util/EventLog.java.
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*/
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typedef enum {
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EVENT_TYPE_INT = 0,
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EVENT_TYPE_LONG = 1,
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EVENT_TYPE_STRING = 2,
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EVENT_TYPE_LIST = 3,
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} AndroidEventLogType;
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#ifndef LOG_EVENT_INT
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#define LOG_EVENT_INT(_tag, _value) { \
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int intBuf = _value; \
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(void) android_btWriteLog(_tag, EVENT_TYPE_INT, &intBuf, \
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sizeof(intBuf)); \
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}
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#endif
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#ifndef LOG_EVENT_LONG
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#define LOG_EVENT_LONG(_tag, _value) { \
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long long longBuf = _value; \
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(void) android_btWriteLog(_tag, EVENT_TYPE_LONG, &longBuf, \
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sizeof(longBuf)); \
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}
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#endif
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#ifndef LOG_EVENT_STRING
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#define LOG_EVENT_STRING(_tag, _value) \
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((void) 0) /* not implemented -- must combine len with string */
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#endif
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/* TODO: something for LIST */
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/*
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* ===========================================================================
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*
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* The stuff in the rest of this file should not be used directly.
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*/
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#define android_printLog(prio, tag, fmt...) \
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__android_log_print(prio, tag, fmt)
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#define android_vprintLog(prio, cond, tag, fmt...) \
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__android_log_vprint(prio, tag, fmt)
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/* XXX Macros to work around syntax errors in places where format string
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* arg is not passed to LOG_ASSERT, LOG_ALWAYS_FATAL or LOG_ALWAYS_FATAL_IF
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* (happens only in debug builds).
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*/
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/* Returns 2nd arg. Used to substitute default value if caller's vararg list
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* is empty.
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*/
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#define __android_second(dummy, second, ...) second
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/* If passed multiple args, returns ',' followed by all but 1st arg, otherwise
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* returns nothing.
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*/
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#define __android_rest(first, ...) , ## __VA_ARGS__
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#define android_printAssert(cond, tag, fmt...) \
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__android_log_assert(cond, tag, \
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__android_second(0, ## fmt, NULL) __android_rest(fmt))
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#define android_writeLog(prio, tag, text) \
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__android_log_write(prio, tag, text)
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#define android_bWriteLog(tag, payload, len) \
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__android_log_bwrite(tag, payload, len)
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#define android_btWriteLog(tag, type, payload, len) \
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__android_log_btwrite(tag, type, payload, len)
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// TODO: remove these prototypes and their users
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#define android_testLog(prio, tag) (1)
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#define android_writevLog(vec,num) do{}while(0)
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#define android_write1Log(str,len) do{}while (0)
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#define android_setMinPriority(tag, prio) do{}while(0)
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//#define android_logToCallback(func) do{}while(0)
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#define android_logToFile(tag, file) (0)
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#define android_logToFd(tag, fd) (0)
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typedef enum {
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LOG_ID_MAIN = 0,
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LOG_ID_RADIO = 1,
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LOG_ID_EVENTS = 2,
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LOG_ID_SYSTEM = 3,
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LOG_ID_MAX
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} log_id_t;
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/*
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* Send a simple string to the log.
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*/
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int __android_log_buf_write(int bufID, int prio, const char *tag, const char *text);
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int __android_log_buf_print(int bufID, int prio, const char *tag, const char *fmt, ...);
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#ifdef __cplusplus
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}
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#endif
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#endif // _LIBS_CUTILS_LOG_H
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