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/*
* Copyright (c) 2014, Ford Motor Company
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following
* disclaimer in the documentation and/or other materials provided with the
* distribution.
*
* Neither the name of the Ford Motor Company nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "utils/push_log.h"
#include "utils/log_message_loop_thread.h"
#include "utils/logger_status.h"
namespace logger {
struct __attribute__((visibility("default"))) LogsEnabled {
static std::atomic_bool logs_enabled_;
};
std::atomic_bool LogsEnabled::logs_enabled_(false);
template <typename T>
using logger_ptr = std::unique_ptr<T, std::function<void(T*)> >;
static logger_ptr<LogMessageLoopThread> log_message_loop_thread;
auto deinit_logger = [](LogMessageLoopThread* logMsgThread) {
delete logMsgThread;
logger::logger_status = logger::LoggerThreadNotCreated;
};
bool push_log(log4cxx::LoggerPtr logger,
log4cxx::LevelPtr level,
const std::string& entry,
log4cxx_time_t timeStamp,
const log4cxx::spi::LocationInfo& location,
const log4cxx::LogString& threadName) {
if (LoggerThreadCreated == logger_status) {
LogMessage message = {
logger, level, entry, timeStamp, location, threadName};
if (log_message_loop_thread) {
log_message_loop_thread->PostMessage(message);
return true;
}
}
if (LoggerThreadNotCreated == logger_status) {
logger_status = CreatingLoggerThread;
// we'll have to drop messages
// while creating logger thread
create_log_message_loop_thread();
LogMessage message = {
logger, level, entry, timeStamp, location, threadName};
log_message_loop_thread->PostMessage(message);
logger_status = LoggerThreadCreated;
return true;
}
// also we drop messages
// while deleting logger thread
return false;
}
bool logs_enabled() {
return LogsEnabled::logs_enabled_;
}
void set_logs_enabled(bool state) {
LogsEnabled::logs_enabled_ = state;
}
void create_log_message_loop_thread() {
if (!log_message_loop_thread) {
log_message_loop_thread = logger_ptr<LogMessageLoopThread>(
new LogMessageLoopThread, deinit_logger);
}
}
void delete_log_message_loop_thread(log4cxx::LoggerPtr& logger) {
if (logger::logger_status == logger::LoggerThreadCreated) {
logger::flush_logger();
}
log_message_loop_thread.reset();
if (LOG4CXX_UNLIKELY(logger->isDebugEnabled())) {
::log4cxx::helpers::MessageBuffer oss_;
logger->forcedLog(::log4cxx::Level::getDebug(),
oss_.str(oss_ << "Logger loop thread deinitialized"),
LOG4CXX_LOCATION);
}
if (logger->getRootLogger() == logger) {
return;
}
if (LOG4CXX_UNLIKELY(logger->isDebugEnabled())) {
::log4cxx::helpers::MessageBuffer oss_;
logger->forcedLog(::log4cxx::Level::getDebug(),
oss_.str(oss_ << "Logger calling removeAllAppenders"),
LOG4CXX_LOCATION);
}
logger->removeAllAppenders();
}
void flush_logger() {
logger::LoggerStatus old_status = logger::logger_status;
// Stop pushing new messages to the log queue
logger::logger_status = logger::DeletingLoggerThread;
log_message_loop_thread->WaitDumpQueue();
logger::logger_status = old_status;
}
} // namespace logger
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