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removed unused file::sparse_end

This commit is contained in:
Alden Torres 2019-01-06 15:08:57 -05:00 committed by Arvid Norberg
parent 94d737ff77
commit 6b04c4f642
2 changed files with 0 additions and 55 deletions
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4
include/libtorrent/file.hpp
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@ -186,10 +186,6 @@ namespace libtorrent {
std::int64_t get_size(error_code& ec) const;
// return the offset of the first byte that
// belongs to a data-region
std::int64_t sparse_end(std::int64_t start) const;
handle_type native_handle() const { return m_file_handle; }
private:

51
src/file.cpp
View File

@ -1248,57 +1248,6 @@ namespace {
return -1;
}
return fs.st_size;
#endif
}
std::int64_t file::sparse_end(std::int64_t start) const
{
#ifdef TORRENT_WINDOWS
#ifndef FSCTL_QUERY_ALLOCATED_RANGES
typedef struct _FILE_ALLOCATED_RANGE_BUFFER {
LARGE_INTEGER FileOffset;
LARGE_INTEGER Length;
} FILE_ALLOCATED_RANGE_BUFFER;
#define FSCTL_QUERY_ALLOCATED_RANGES ((0x9 << 16) | (1 << 14) | (51 << 2) | 3)
#endif // TORRENT_MINGW
FILE_ALLOCATED_RANGE_BUFFER buffer;
DWORD bytes_returned = 0;
FILE_ALLOCATED_RANGE_BUFFER in;
error_code ec;
std::int64_t file_size = get_size(ec);
if (ec) return start;
in.FileOffset.QuadPart = start;
in.Length.QuadPart = file_size - start;
if (!DeviceIoControl(native_handle(), FSCTL_QUERY_ALLOCATED_RANGES
, &in, sizeof(FILE_ALLOCATED_RANGE_BUFFER)
, &buffer, sizeof(FILE_ALLOCATED_RANGE_BUFFER), &bytes_returned, 0))
{
if (GetLastError() != ERROR_INSUFFICIENT_BUFFER) return start;
}
// if there are no allocated regions within the rest
// of the file, return the end of the file
if (bytes_returned == 0) return file_size;
// assume that this range overlaps the start of the
// region we were interested in, and that start actually
// resides in an allocated region.
if (buffer.FileOffset.QuadPart < start) return start;
// return the offset to the next allocated region
return buffer.FileOffset.QuadPart;
#elif defined SEEK_DATA
// this is supported on solaris
std::int64_t ret = ::lseek(native_handle(), start, SEEK_DATA);
if (ret < 0) return start;
return start;
#else
return start;
#endif
}
}