mirror of https://gitee.com/bigwinds/arangodb
82 lines
2.4 KiB
C++
82 lines
2.4 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// DISCLAIMER
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///
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/// Copyright 2014-2016 ArangoDB GmbH, Cologne, Germany
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/// Copyright 2004-2014 triAGENS GmbH, Cologne, Germany
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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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/// Copyright holder is ArangoDB GmbH, Cologne, Germany
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///
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/// @author Jan Steemann
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////////////////////////////////////////////////////////////////////////////////
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#include "MMFilesRemoverThread.h"
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#include "Basics/ConditionLocker.h"
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#include "Basics/Exceptions.h"
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#include "Logger/Logger.h"
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#include "MMFiles/MMFilesLogfileManager.h"
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using namespace arangodb;
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/// @brief wait interval for the remover thread when idle
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uint64_t const MMFilesRemoverThread::Interval = 2000000;
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MMFilesRemoverThread::MMFilesRemoverThread(MMFilesLogfileManager& logfileManager)
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: Thread(logfileManager.server(), "WalRemover"),
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_logfileManager(logfileManager),
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_condition() {}
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/// @brief begin shutdown sequence
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void MMFilesRemoverThread::beginShutdown() {
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Thread::beginShutdown();
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CONDITION_LOCKER(guard, _condition);
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guard.signal();
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}
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/// @brief main loop
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void MMFilesRemoverThread::run() {
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int64_t iterations = 0;
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while (!isStopping()) {
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bool worked = false;
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try {
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worked = _logfileManager.removeLogfiles();
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if (++iterations == 5) {
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iterations = 0;
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_logfileManager.collectLogfileBarriers();
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}
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} catch (arangodb::basics::Exception const& ex) {
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int res = ex.code();
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LOG_TOPIC("c9859", ERR, arangodb::Logger::ENGINES)
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<< "got unexpected error in removerThread::run: " << TRI_errno_string(res);
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} catch (...) {
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LOG_TOPIC("3536b", ERR, arangodb::Logger::ENGINES)
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<< "got unspecific error in removerThread::run";
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}
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// sleep only if there was nothing to do
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if (!worked) {
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CONDITION_LOCKER(guard, _condition);
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if (!isStopping()) {
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guard.wait(Interval);
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}
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}
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}
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}
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