On 06/06/2014 07:47 PM, Janne Blomqvist wrote: > PING > > On Tue, May 27, 2014 at 11:50 PM, Janne Blomqvist > <blomqvist.ja...@gmail.com> wrote: >> Hi, >> >> the attached patch implements the idea in >> https://gcc.gnu.org/ml/fortran/2013-04/msg00258.html ; though it >> turned out it was much simpler than what I envisaged back then. With >> this patch, we no longer seek back and forth when writing small >> records with sequential unformatted, which previously happened due to >> the buffer filling up when not on record boundaries. >> Performance-wise, I didn't really see any difference on Linux/tmpfs, >> but maybe it makes a difference in other circumstances. And of course, >> as a side-effect, it makes sequential unformatted work on unseekable >> devices such as pipes as long as the records are small, although I'm >> not sure this is something we want to advertise to users. >> >> Regtested on x86_64-unknown-linux-gnu, Ok for trunk? >> >> 2014-05-27 Janne Blomqvist <j...@gcc.gnu.org> >> >> PR libfortran/56981 >> * io/unix.h (struct stream_vtable): Add new member function, >> markeor. >> (smarkeor): New inline function. >> (flush_if_unbuffered): Remove prototype. >> * io/unix.c (raw_markeor): New function. >> (raw_vtable): Initialize markeor member. >> (buf_markeor): New function. >> (buf_vtable): Initialize markeor member. >> (mem_vtable): Likewise. >> (mem4_vtable): Likewise. >> (flush_if_unbuffered): Remove function. >> * io/transfer.c (next_record): Call smarkeor instead of >> flush_if_unbuffered. >> >> >> -- >> Janne Blomqvist > > >
OK, thanks for patch.
