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Re: Threading the compiler
- From: Ian Lance Taylor <iant at google dot com>
- To: "Dave Korn" <dave dot korn at artimi dot com>
- Cc: "'GCC Development'" <gcc at gcc dot gnu dot org>
- Date: 14 Nov 2006 11:27:02 -0800
- Subject: Re: Threading the compiler
- References: <01e801c70820$efd68ea0$a501a8c0@CAM.ARTIMI.COM>
"Dave Korn" <dave.korn@artimi.com> writes:
> > It's irrelevant to the main discussion here, but in fact there is a
> > fair amount of possible threading in the linker proper, quite apart
> > from LTO. The linker spends a lot of time reading large files, and
> > the I/O wait can be parallelized.
>
> That's not even thread-worthy, that just required bog-standard AIO
> techniques. Um, /are/ there suitably portable AIO techniques? I guess the
> answer is going to be "Yeah, spawn a posix thread and make an ordinary
> synchronous f* io call in there"! Heh.
There is a POSIX standard: aio_read and friends. However, on
GNU/Linux, aio_read just does the read in a different thread anyhow.
So aio_read and friends are just a slightly simpler threading
interface.
Ian