mirror of https://github.com/aria2/aria2
125 lines
3.4 KiB
C++
125 lines
3.4 KiB
C++
/* <!-- copyright */
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/*
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* aria2 - The high speed download utility
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*
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* Copyright (C) 2012 Tatsuhiro Tsujikawa
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* In addition, as a special exception, the copyright holders give
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* permission to link the code of portions of this program with the
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* OpenSSL library under certain conditions as described in each
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* individual source file, and distribute linked combinations
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* including the two.
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* You must obey the GNU General Public License in all respects
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* for all of the code used other than OpenSSL. If you modify
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* file(s) with this exception, you may extend this exception to your
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* version of the file(s), but you are not obligated to do so. If you
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* do not wish to do so, delete this exception statement from your
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* version. If you delete this exception statement from all source
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* files in the program, then also delete it here.
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*/
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/* copyright --> */
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#include "WrDiskCacheEntry.h"
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#include <cstring>
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#include "DiskAdaptor.h"
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#include "RecoverableException.h"
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#include "DownloadFailureException.h"
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#include "LogFactory.h"
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#include "fmt.h"
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namespace aria2 {
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WrDiskCacheEntry::WrDiskCacheEntry
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(const std::shared_ptr<DiskAdaptor>& diskAdaptor)
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: sizeKey_(0),
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lastUpdate_(0),
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size_(0),
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error_(CACHE_ERR_SUCCESS),
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errorCode_(error_code::UNDEFINED),
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diskAdaptor_(diskAdaptor)
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{}
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WrDiskCacheEntry::~WrDiskCacheEntry()
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{
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if(!set_.empty()) {
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A2_LOG_WARN(fmt("WrDiskCacheEntry is not empty size=%lu",
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static_cast<unsigned long>(size_)));
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}
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deleteDataCells();
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}
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void WrDiskCacheEntry::deleteDataCells()
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{
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for(auto& e: set_) {
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delete [] e->data;
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delete e;
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}
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set_.clear();
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size_ = 0;
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}
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void WrDiskCacheEntry::writeToDisk()
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{
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try {
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diskAdaptor_->writeCache(this);
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} catch(RecoverableException& e) {
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A2_LOG_ERROR("WrDiskCacheEntry flush error");
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error_ = CACHE_ERR_ERROR;
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errorCode_ = e.getErrorCode();
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}
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deleteDataCells();
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}
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void WrDiskCacheEntry::clear()
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{
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deleteDataCells();
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}
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bool WrDiskCacheEntry::cacheData(DataCell* dataCell)
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{
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A2_LOG_DEBUG(fmt("WrDiskCacheEntry cache goff=%" PRId64 ", len=%lu",
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dataCell->goff, static_cast<unsigned long>(dataCell->len)));
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if(set_.insert(dataCell).second) {
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size_ += dataCell->len;
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return true;
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} else {
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return false;
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}
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}
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size_t WrDiskCacheEntry::append(int64_t goff, const unsigned char *data,
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size_t len)
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{
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if(set_.empty()) {
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return 0;
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}
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auto i = set_.end();
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--i;
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if(static_cast<int64_t>((*i)->goff + (*i)->len) == goff) {
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size_t wlen = std::min((*i)->capacity - (*i)->len, len);
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memcpy((*i)->data + (*i)->offset + (*i)->len, data, wlen);
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(*i)->len += wlen;
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size_ += wlen;
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return wlen;
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} else {
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return 0;
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}
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}
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} // namespace aria2
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