mirror of https://github.com/aria2/aria2
109 lines
3.1 KiB
C++
109 lines
3.1 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 "SingleFileAllocationIterator.h"
|
|
|
|
#include <cstring>
|
|
#include <cstdlib>
|
|
|
|
#include "BinaryStream.h"
|
|
#include "util.h"
|
|
#include "a2io.h"
|
|
#include "Logger.h"
|
|
#include "LogFactory.h"
|
|
|
|
namespace aria2 {
|
|
|
|
#define BUFSIZE (256*1024)
|
|
#define ALIGNMENT 512
|
|
|
|
SingleFileAllocationIterator::SingleFileAllocationIterator
|
|
(BinaryStream* stream,
|
|
off_t offset,
|
|
uint64_t totalLength)
|
|
: stream_(stream),
|
|
offset_(offset),
|
|
totalLength_(totalLength),
|
|
buffer_(0)
|
|
{
|
|
if(offset_%ALIGNMENT != 0) {
|
|
stream_->disableDirectIO();
|
|
}
|
|
}
|
|
|
|
SingleFileAllocationIterator::~SingleFileAllocationIterator()
|
|
{
|
|
#ifdef HAVE_POSIX_MEMALIGN
|
|
free(buffer_);
|
|
#else
|
|
delete [] buffer_;
|
|
#endif // HAVE_POSIX_MEMALIGN
|
|
}
|
|
|
|
void SingleFileAllocationIterator::init()
|
|
{
|
|
static bool noticeDone = false;
|
|
if(!noticeDone) {
|
|
noticeDone = true;
|
|
A2_LOG_NOTICE("Allocating disk space. Use --file-allocation=none to"
|
|
" disable it. See --file-allocation option in man page for"
|
|
" more details.");
|
|
}
|
|
#ifdef HAVE_POSIX_MEMALIGN
|
|
buffer_ = reinterpret_cast<unsigned char*>
|
|
(util::allocateAlignedMemory(ALIGNMENT, BUFSIZE));
|
|
#else
|
|
buffer_ = new unsigned char[BUFSIZE];
|
|
#endif // HAVE_POSIX_MEMALIGN
|
|
memset(buffer_, 0, BUFSIZE);
|
|
}
|
|
|
|
void SingleFileAllocationIterator::allocateChunk()
|
|
{
|
|
stream_->writeData(buffer_, BUFSIZE, offset_);
|
|
offset_ += BUFSIZE;
|
|
|
|
if(totalLength_ < (uint64_t)offset_) {
|
|
stream_->truncate(totalLength_);
|
|
offset_ = totalLength_;
|
|
}
|
|
}
|
|
|
|
bool SingleFileAllocationIterator::finished()
|
|
{
|
|
return (uint64_t)offset_ == totalLength_;
|
|
}
|
|
|
|
} // namespace aria2
|