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