void File::Prealloc(Int64 Size)
{
#ifdef _WIN_32
if (RawSeek(Size,SEEK_SET))
{
Truncate();
Seek(0,SEEK_SET);
}
#endif
}
/**
this is not needed for bulk_extractor
*/
void File::Prealloc(int64 Size)
{
#ifdef _WIN_ALL
if (RawSeek(Size,SEEK_SET))
{
Truncate();
Seek(0,SEEK_SET);
}
#endif
#if defined(_UNIX) && defined(USE_FALLOCATE)
// fallocate is rather new call. Only latest kernels support it.
// So we are not using it by default yet.
int fd = fileno(hFile);
if (fd >= 0)
fallocate(fd, 0, 0, Size);
#endif
}
void File::Seek(Int64 Offset,int Method)
{
if (!RawSeek(Offset,Method) && AllowExceptions)
ErrHandler.SeekError(FileName);
}
/**
Moves the pointer in the file to a specified location. Calls the <code>RawSeek</code> function.
@param Offset - the length from the current position
@param Method - the method to move the pointer.
If <code>SEEK_SET</code>, move the pointer <code>Offset</code> number of bytes to the new location in memory.
If <code>SEEK_END</code>, move the pointer to the end of the file (NOT IMPLEMENTED)
If <code>SEEK_CUR</code>, move the pointer (NOT IMPLEMENTED).
*/
void File::Seek(int64 Offset,int Method)
{ //Calls RawSeek function
RawSeek(Offset,Method);
/*if (!RawSeek(Offset,Method) && AllowExceptions)
ErrHandler.SeekError(FileName,FileNameW);*/
}
