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/* <!-- copyright */
/*
* aria2 - The high speed download utility
*
* Copyright (C) 2006 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 "MultiFileAllocationIterator.h"
#include "MultiDiskAdaptor.h"
#include "FileEntry.h"
#include "AdaptiveFileAllocationIterator.h"
#include "TruncFileAllocationIterator.h"
#ifdef HAVE_SOME_FALLOCATE
# include "FallocFileAllocationIterator.h"
#endif // HAVE_SOME_FALLOCATE
#include "DiskWriter.h"
namespace aria2 {
MultiFileAllocationIterator::MultiFileAllocationIterator
(MultiDiskAdaptor* diskAdaptor)
: diskAdaptor_{diskAdaptor},
entryItr_{std::begin(diskAdaptor_->getDiskWriterEntries())}
{}
MultiFileAllocationIterator::~MultiFileAllocationIterator() {}
void MultiFileAllocationIterator::allocateChunk()
{
while((!fileAllocationIterator_ ||
fileAllocationIterator_->finished()) &&
entryItr_ != std::end(diskAdaptor_->getDiskWriterEntries())) {
auto& fileEntry = (*entryItr_)->getFileEntry();
// Open file before calling DiskWriterEntry::size(). Calling
// private function of MultiDiskAdaptor.
diskAdaptor_->openIfNot((*entryItr_).get(), &DiskWriterEntry::openFile);
if((*entryItr_)->needsFileAllocation() &&
(*entryItr_)->size() < fileEntry->getLength()) {
switch(diskAdaptor_->getFileAllocationMethod()) {
#ifdef HAVE_SOME_FALLOCATE
case(DiskAdaptor::FILE_ALLOC_FALLOC):
fileAllocationIterator_ = make_unique<FallocFileAllocationIterator>
((*entryItr_)->getDiskWriter().get(),
(*entryItr_)->size(),
fileEntry->getLength());
break;
#endif // HAVE_SOME_FALLOCATE
case(DiskAdaptor::FILE_ALLOC_TRUNC):
fileAllocationIterator_ = make_unique<TruncFileAllocationIterator>
((*entryItr_)->getDiskWriter().get(),
(*entryItr_)->size(),
fileEntry->getLength());
break;
default:
fileAllocationIterator_ = make_unique<AdaptiveFileAllocationIterator>
((*entryItr_)->getDiskWriter().get(),
(*entryItr_)->size(),
fileEntry->getLength());
break;
}
break;
}
++entryItr_;
}
if(finished()) {
return;
}
fileAllocationIterator_->allocateChunk();
}
bool MultiFileAllocationIterator::finished()
{
return entryItr_ == std::end(diskAdaptor_->getDiskWriterEntries()) &&
(!fileAllocationIterator_ || fileAllocationIterator_->finished());
}
int64_t MultiFileAllocationIterator::getCurrentLength()
{
if(!fileAllocationIterator_) {
return 0;
} else {
return fileAllocationIterator_->getCurrentLength();
}
}
int64_t MultiFileAllocationIterator::getTotalLength()
{
if(!fileAllocationIterator_) {
return 0;
} else {
return fileAllocationIterator_->getTotalLength();
}
}
const DiskWriterEntries&
MultiFileAllocationIterator::getDiskWriterEntries() const
{
return diskAdaptor_->getDiskWriterEntries();
}
} // namespace aria2
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