2d2e0a5c5e
Although ever present, an increased regression introduced with
commit b6bee33182 (liblog: logd:
support logd.timestamp = monotonic).
A signal handler can interrupt in locked context, if log is written
in the signal handler, we are in deadlock. To reduce the contention
and chances for this problem separate out timestamp lock from is
loggable lock to reduce contention situations. Provide a best-guess
response if lock would fail in timestamp path.
Use a common lock() inline within each module, with a comment speaking
to the issues surrounding calling a function that has a mutex within
a signal handler.
ToDo: Hold off signals temporarily in mainline, restart when unblock.
Can not use pthread_sigmask(SIG_BLOCK,,) as it breaks AtCmd.
Signed-off-by: Mark Salyzyn <salyzyn@google.com>
Bug: 25563384
Change-Id: I47e2c87c988c3e359eb9eef129c6a3a08e9eedef
640 lines
18 KiB
C
640 lines
18 KiB
C
/*
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* Copyright (C) 2005-2014 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_LOG_LOG_H
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#define _LIBS_LOG_LOG_H
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#include <stdarg.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <time.h>
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#include <unistd.h>
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#include <log/logd.h>
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#include <log/uio.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 ALOGV (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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#ifndef __predict_false
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#define __predict_false(exp) __builtin_expect((exp) != 0, 0)
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#endif
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/*
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* -DLINT_RLOG in sources that you want to enforce that all logging
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* goes to the radio log buffer. If any logging goes to any of the other
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* log buffers, there will be a compile or link error to highlight the
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* problem. This is not a replacement for a full audit of the code since
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* this only catches compiled code, not ifdef'd debug code. Options to
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* defining this, either temporarily to do a spot check, or permanently
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* to enforce, in all the communications trees; We have hopes to ensure
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* that by supplying just the radio log buffer that the communications
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* teams will have their one-stop shop for triaging issues.
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*/
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#ifndef LINT_RLOG
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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 ALOGV
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#define __ALOGV(...) ((void)ALOG(LOG_VERBOSE, LOG_TAG, __VA_ARGS__))
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#if LOG_NDEBUG
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#define ALOGV(...) do { if (0) { __ALOGV(__VA_ARGS__); } } while (0)
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#else
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#define ALOGV(...) __ALOGV(__VA_ARGS__)
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#endif
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#endif
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#ifndef ALOGV_IF
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#if LOG_NDEBUG
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#define ALOGV_IF(cond, ...) ((void)0)
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#else
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#define ALOGV_IF(cond, ...) \
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( (__predict_false(cond)) \
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? ((void)ALOG(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 ALOGD
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#define ALOGD(...) ((void)ALOG(LOG_DEBUG, LOG_TAG, __VA_ARGS__))
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#endif
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#ifndef ALOGD_IF
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#define ALOGD_IF(cond, ...) \
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( (__predict_false(cond)) \
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? ((void)ALOG(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 ALOGI
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#define ALOGI(...) ((void)ALOG(LOG_INFO, LOG_TAG, __VA_ARGS__))
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#endif
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#ifndef ALOGI_IF
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#define ALOGI_IF(cond, ...) \
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( (__predict_false(cond)) \
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? ((void)ALOG(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 ALOGW
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#define ALOGW(...) ((void)ALOG(LOG_WARN, LOG_TAG, __VA_ARGS__))
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#endif
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#ifndef ALOGW_IF
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#define ALOGW_IF(cond, ...) \
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( (__predict_false(cond)) \
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? ((void)ALOG(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 ALOGE
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#define ALOGE(...) ((void)ALOG(LOG_ERROR, LOG_TAG, __VA_ARGS__))
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#endif
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#ifndef ALOGE_IF
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#define ALOGE_IF(cond, ...) \
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( (__predict_false(cond)) \
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? ((void)ALOG(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_ALOGV
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#if LOG_NDEBUG
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#define IF_ALOGV() if (false)
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#else
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#define IF_ALOGV() IF_ALOG(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_ALOGD
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#define IF_ALOGD() IF_ALOG(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_ALOGI
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#define IF_ALOGI() IF_ALOG(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_ALOGW
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#define IF_ALOGW() IF_ALOG(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_ALOGE
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#define IF_ALOGE() IF_ALOG(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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#define __SLOGV(...) \
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((void)__android_log_buf_print(LOG_ID_SYSTEM, ANDROID_LOG_VERBOSE, LOG_TAG, __VA_ARGS__))
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#if LOG_NDEBUG
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#define SLOGV(...) do { if (0) { __SLOGV(__VA_ARGS__); } } while (0)
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#else
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#define SLOGV(...) __SLOGV(__VA_ARGS__)
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#endif
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#endif
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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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( (__predict_false(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(...) \
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((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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( (__predict_false(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(...) \
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((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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( (__predict_false(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(...) \
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((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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( (__predict_false(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(...) \
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((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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( (__predict_false(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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#endif /* !LINT_RLOG */
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// ---------------------------------------------------------------------
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/*
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* Simplified macro to send a verbose radio log message using the current LOG_TAG.
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*/
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#ifndef RLOGV
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#define __RLOGV(...) \
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((void)__android_log_buf_print(LOG_ID_RADIO, ANDROID_LOG_VERBOSE, LOG_TAG, __VA_ARGS__))
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#if LOG_NDEBUG
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#define RLOGV(...) do { if (0) { __RLOGV(__VA_ARGS__); } } while (0)
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#else
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#define RLOGV(...) __RLOGV(__VA_ARGS__)
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#endif
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#endif
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#ifndef RLOGV_IF
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#if LOG_NDEBUG
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#define RLOGV_IF(cond, ...) ((void)0)
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#else
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#define RLOGV_IF(cond, ...) \
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( (__predict_false(cond)) \
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? ((void)__android_log_buf_print(LOG_ID_RADIO, 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 radio log message using the current LOG_TAG.
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*/
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#ifndef RLOGD
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#define RLOGD(...) \
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((void)__android_log_buf_print(LOG_ID_RADIO, ANDROID_LOG_DEBUG, LOG_TAG, __VA_ARGS__))
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#endif
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#ifndef RLOGD_IF
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#define RLOGD_IF(cond, ...) \
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( (__predict_false(cond)) \
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? ((void)__android_log_buf_print(LOG_ID_RADIO, 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 radio log message using the current LOG_TAG.
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*/
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#ifndef RLOGI
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#define RLOGI(...) \
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((void)__android_log_buf_print(LOG_ID_RADIO, ANDROID_LOG_INFO, LOG_TAG, __VA_ARGS__))
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#endif
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#ifndef RLOGI_IF
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#define RLOGI_IF(cond, ...) \
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( (__predict_false(cond)) \
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? ((void)__android_log_buf_print(LOG_ID_RADIO, 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 radio log message using the current LOG_TAG.
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*/
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#ifndef RLOGW
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#define RLOGW(...) \
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((void)__android_log_buf_print(LOG_ID_RADIO, ANDROID_LOG_WARN, LOG_TAG, __VA_ARGS__))
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#endif
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#ifndef RLOGW_IF
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#define RLOGW_IF(cond, ...) \
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( (__predict_false(cond)) \
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? ((void)__android_log_buf_print(LOG_ID_RADIO, 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 radio log message using the current LOG_TAG.
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*/
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#ifndef RLOGE
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#define RLOGE(...) \
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((void)__android_log_buf_print(LOG_ID_RADIO, ANDROID_LOG_ERROR, LOG_TAG, __VA_ARGS__))
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#endif
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#ifndef RLOGE_IF
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#define RLOGE_IF(cond, ...) \
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( (__predict_false(cond)) \
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? ((void)__android_log_buf_print(LOG_ID_RADIO, 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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( (__predict_false(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 ALOG_ASSERT
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#define ALOG_ASSERT(cond, ...) LOG_FATAL_IF(!(cond), ## __VA_ARGS__)
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//#define ALOG_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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* ALOG(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 ALOG
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#define ALOG(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_ALOG
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#define IF_ALOG(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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EVENT_TYPE_FLOAT = 4,
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} AndroidEventLogType;
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#define sizeof_AndroidEventLogType sizeof(typeof_AndroidEventLogType)
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#define typeof_AndroidEventLogType unsigned char
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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_FLOAT
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#define LOG_EVENT_FLOAT(_tag, _value) { \
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float floatBuf = _value; \
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(void) android_btWriteLog(_tag, EVENT_TYPE_FLOAT, &floatBuf, \
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sizeof(floatBuf)); \
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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) __android_log_bswrite(_tag, _value);
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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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*
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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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|
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#define android_printLog(prio, tag, fmt...) \
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__android_log_print(prio, tag, fmt)
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|
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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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|
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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 ALOG_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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|
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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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|
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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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|
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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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|
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|
#define android_errorWriteLog(tag, subTag) \
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|
__android_log_error_write(tag, subTag, -1, NULL, 0)
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|
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#define android_errorWriteWithInfoLog(tag, subTag, uid, data, dataLen) \
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|
__android_log_error_write(tag, subTag, uid, data, dataLen)
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|
|
|
/*
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|
* IF_ALOG uses android_testLog, but IF_ALOG can be overridden.
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|
* android_testLog will remain constant in its purpose as a wrapper
|
|
* for Android logging filter policy, and can be subject to
|
|
* change. It can be reused by the developers that override
|
|
* IF_ALOG as a convenient means to reimplement their policy
|
|
* over Android.
|
|
*/
|
|
#if LOG_NDEBUG /* Production */
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|
#define android_testLog(prio, tag) \
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|
(__android_log_is_loggable(prio, tag, ANDROID_LOG_DEBUG) != 0)
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#else
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#define android_testLog(prio, tag) \
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(__android_log_is_loggable(prio, tag, ANDROID_LOG_VERBOSE) != 0)
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#endif
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|
|
|
// TODO: remove these prototypes and their users
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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 log_id {
|
|
LOG_ID_MIN = 0,
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|
|
|
#ifndef LINT_RLOG
|
|
LOG_ID_MAIN = 0,
|
|
#endif
|
|
LOG_ID_RADIO = 1,
|
|
#ifndef LINT_RLOG
|
|
LOG_ID_EVENTS = 2,
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|
LOG_ID_SYSTEM = 3,
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|
LOG_ID_CRASH = 4,
|
|
LOG_ID_KERNEL = 5,
|
|
#endif
|
|
|
|
LOG_ID_MAX
|
|
} log_id_t;
|
|
#define sizeof_log_id_t sizeof(typeof_log_id_t)
|
|
#define typeof_log_id_t unsigned char
|
|
|
|
/*
|
|
* Use the per-tag properties "log.tag.<tagname>" to generate a runtime
|
|
* result of non-zero to expose a log. prio is ANDROID_LOG_VERBOSE to
|
|
* ANDROID_LOG_FATAL. default_prio if no property. Undefined behavior if
|
|
* any other value.
|
|
*/
|
|
int __android_log_is_loggable(int prio, const char *tag, int default_prio);
|
|
|
|
int __android_log_error_write(int tag, const char *subTag, int32_t uid, const char *data,
|
|
uint32_t dataLen);
|
|
|
|
/*
|
|
* Send a simple string to the log.
|
|
*/
|
|
int __android_log_buf_write(int bufID, int prio, const char *tag, const char *text);
|
|
int __android_log_buf_print(int bufID, int prio, const char *tag, const char *fmt, ...)
|
|
#if defined(__GNUC__)
|
|
__attribute__((__format__(printf, 4, 5)))
|
|
#endif
|
|
;
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* _LIBS_LOG_LOG_H */
|