// seek
off_t doSeek(int64_t const p, int const whence)
{
off_t off = static_cast<off_t>(-1);
while ( (off=fd->lseek(p,whence)) == static_cast<off_t>(-1) )
{
int const error = errno;
switch ( error )
{
case EINTR:
case EAGAIN:
// try again
break;
default:
{
libmaus2::exception::LibMausException se;
se.getStream() << "PosixInputOutputStreamBuffer::doSeek(): seek() failed: " << strerror(error) << std::endl;
se.finish();
throw se;
}
}
}
return off;
}
void init(bool const repos)
{
// set empty buffer
setgchecked(buffer.end(), buffer.end(), buffer.end());
// seek
if ( repos )
fd->lseek(symsread,SEEK_SET);
}
