Randall S. Becker <rsbecker <at> nexbridge.com> writes:
>
> On 2015-02-07 13:07PM Randall S. Becker wrote:
> >On 2015-02-07 12:30PM Torsten Bögershausen wrote:
> >>On 2015-02-07 17.45, Joachim Schmitz wrote:
<spip>
> Although I do agree with Jojo, that MAX_IO_SIZE seems to be a platform
> constant and should be defined in terms of SSIZE_MAX. So something like:
>
> #ifndef MAX_IO_SIZE
> # ifdef SSIZE_MAX
> # define MAX_IO_SIZE (SSIZE_MAX)
> # else
> # define MAX_IO_SIZE (8*1024*1024)
> # endif
> #endif
>
> would be desirable.
It would be way too large on some platforms. those 8MB had been chosen for
a good reason, I assume:
/*
* Limit size of IO chunks, because huge chunks only cause pain. OS X
* 64-bit is buggy, returning EINVAL if len >= INT_MAX; and even in
* the absence of bugs, large chunks can result in bad latencies when
* you decide to kill the process.
*/
However it should never be larger than SSIZE_MAX
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