mirror of https://github.com/aria2/aria2
131 lines
4.4 KiB
C++
131 lines
4.4 KiB
C++
/* <!-- 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),
|
|
entries_(diskAdaptor_->diskWriterEntries_.begin(),
|
|
diskAdaptor_->diskWriterEntries_.end())
|
|
{}
|
|
|
|
MultiFileAllocationIterator::~MultiFileAllocationIterator() {}
|
|
|
|
void MultiFileAllocationIterator::allocateChunk()
|
|
{
|
|
while(!fileAllocationIterator_ ||
|
|
fileAllocationIterator_->finished()) {
|
|
if(entries_.empty()) {
|
|
break;
|
|
}
|
|
SharedHandle<DiskWriterEntry> entry = entries_.front();
|
|
entries_.pop_front();
|
|
SharedHandle<FileEntry> fileEntry = entry->getFileEntry();
|
|
// Open file before calling DiskWriterEntry::size()
|
|
diskAdaptor_->openIfNot(entry, &DiskWriterEntry::openFile);
|
|
if(entry->needsFileAllocation() && entry->size() < fileEntry->getLength()) {
|
|
// Calling private function of MultiDiskAdaptor.
|
|
switch(diskAdaptor_->getFileAllocationMethod()) {
|
|
#ifdef HAVE_SOME_FALLOCATE
|
|
case(DiskAdaptor::FILE_ALLOC_FALLOC):
|
|
fileAllocationIterator_.reset
|
|
(new FallocFileAllocationIterator(entry->getDiskWriter().get(),
|
|
entry->size(),
|
|
fileEntry->getLength()));
|
|
break;
|
|
#endif // HAVE_SOME_FALLOCATE
|
|
case(DiskAdaptor::FILE_ALLOC_TRUNC):
|
|
fileAllocationIterator_.reset
|
|
(new TruncFileAllocationIterator(entry->getDiskWriter().get(),
|
|
entry->size(),
|
|
fileEntry->getLength()));
|
|
break;
|
|
default:
|
|
fileAllocationIterator_.reset
|
|
(new AdaptiveFileAllocationIterator(entry->getDiskWriter().get(),
|
|
entry->size(),
|
|
fileEntry->getLength()));
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if(finished()) {
|
|
return;
|
|
}
|
|
fileAllocationIterator_->allocateChunk();
|
|
}
|
|
|
|
bool MultiFileAllocationIterator::finished()
|
|
{
|
|
return entries_.empty() &&
|
|
(!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 std::deque<SharedHandle<DiskWriterEntry> >&
|
|
MultiFileAllocationIterator::getDiskWriterEntries() const
|
|
{
|
|
return entries_;
|
|
}
|
|
|
|
} // namespace aria2
|