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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
/**
* \file AsyncJournal.cpp
*/
#include "AsyncJournal.h"
#include "AioCallback.h"
#include "DataToken.h"
// --- temp code ---
#include <fstream>
#include <iostream>
// --- end temp code ---
namespace qpid {
namespace asyncStore {
namespace jrnl2 {
std::string
g_ioResAsString(const jrnlOpRes /*res*/) {
/// \todo TODO - provide implementation
return ".[g_ioResAsString].";
}
AsyncJournal::AsyncJournal(const std::string& jrnlId,
const std::string& jrnlDir,
const std::string& baseFileName) :
m_jrnlId(jrnlId),
m_jrnlDir(jrnlDir),
m_baseFileName(baseFileName),
m_jrnlParamsPtr(0),
m_aioCallbackPtr(0)
{
m_writeDataTokens.reserve(s_listSizeThreshold);
m_callbackDataTokens.reserve(s_listSizeThreshold);
}
std::string
AsyncJournal::getId() const {
return m_jrnlId;
}
JournalDirectory
AsyncJournal::getJournalDir() const {
return m_jrnlDir;
}
std::string
AsyncJournal::getJournalDirName() const {
return m_jrnlDir.getFqName();
}
std::string
AsyncJournal::getBaseFileName() const {
return m_baseFileName;
}
const JournalRunState&
AsyncJournal::getState() const {
return m_jrnlState;
}
const JournalParameters*
AsyncJournal::getParameters() const {
return m_jrnlParamsPtr;
}
void
AsyncJournal::initialize(const JournalParameters* jpPtr,
AioCallback* const aiocbPtr) {
m_jrnlParamsPtr = jpPtr;
m_aioCallbackPtr = aiocbPtr;
// --- temp code ---
m_jrnlDir.create();
/// --- end temp code ---
}
jrnlOpRes
AsyncJournal::enqueue(DataToken* dtokPtr,
const void* /*dataPtr*/,
const std::size_t /*dataLen*/,
const void* /*tidPtr*/,
const std::size_t /*tidLen*/,
const bool /*transientFlag*/) {
dtokPtr->getDataOpState().enqueue();
// --- temp code ---
{ // --- START OF CRITICAL SECTION ---
ScopedLock l(m_writeDataTokensLock);
m_writeDataTokens.push_back(dtokPtr);
if (m_writeDataTokens.size() >= s_listSizeThreshold) {
flushNoLock();
}
} // --- END OF CRITICAL SECTION ---
//processCompletedAioWriteEvents(0);
// --- end temp code ---
return 0;
}
jrnlOpRes
AsyncJournal::dequeue(DataToken* const dtokPtr,
const void* /*tidPtr*/,
const std::size_t /*tidLen*/) {
dtokPtr->getDataOpState().dequeue();
dtokPtr->setDequeueRecordId(dtokPtr->getRecordId());
// --- temp code ---
{ // --- START OF CRITICAL SECTION ---
ScopedLock l(m_writeDataTokensLock);
m_writeDataTokens.push_back(dtokPtr);
if (m_writeDataTokens.size() >= s_listSizeThreshold) {
flushNoLock();
}
} // --- END OF CRITICAL SECTION ---
//processCompletedAioWriteEvents(0);
// --- end temp code ---
return 0;
}
jrnlOpRes
AsyncJournal::commit() {
/// \todo TODO - provide implementation
return 0;
}
jrnlOpRes
AsyncJournal::abort() {
/// \todo TODO - provide implementation
return 0;
}
jrnlOpRes
AsyncJournal::flush() {
// --- temp code ---
// --- START OF CRITICAL SECTION ---
ScopedTryLock l(m_writeDataTokensLock);
if (l.isLocked()) {
return flushNoLock();
}
return 0;
// --- END OF CRITICAL SECTION ---
// --- end temp code ---
}
// protected
jrnlOpRes
AsyncJournal::flushNoLock() {
// --- temp code ---
// Normally the page would be written to disk using libaio here (still to do).
uint32_t cnt = 0UL;
ScopedLock l(m_callbackDataTokensLock);
while (!m_writeDataTokens.empty()) {
m_callbackDataTokens.push_back(m_writeDataTokens.back());
m_writeDataTokens.pop_back();
++cnt;
}
return 0;
// --- end temp code ---
}
jrnlOpRes
AsyncJournal::sync(const double timeout) {
// --- temp code ---
// --- START OF CRITICAL SECTION ---
ScopedTryLock l(m_writeDataTokensLock);
if (l.isLocked()) {
return syncNoLock(timeout);
}
return 0;
// --- END OF CRITICAL SECTION ---
// --- end temp code ---
}
// protected
jrnlOpRes
AsyncJournal::syncNoLock(const double /*timeout*/) {
// --- temp code ---
if (m_callbackDataTokens.size()) {
processCompletedAioWriteEvents();
}
return 0;
// --- end temp code ---
}
void
AsyncJournal::processCompletedAioWriteEvents(const double /*timeout*/) {
// --- temp code ---
// --- START OF CRITICAL SECTION 1 ---
ScopedLock l1(m_callbackDataTokensLock);
m_aioCallbackPtr->writeAioCompleteCallback(m_callbackDataTokens);
// --- END OF CRITICAL SECTION 1 ---
// --- end temp code ---
}
}}} // namespace qpid::asyncStore::jrnl2
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