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Re: POSIX Async I/O

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Re: POSIX Async I/O

Subject: Re: POSIX Async I/O
From: Terry Lambert <email@hidden>
Date: Thu, 28 Jul 2005 13:54:56 -0700

On Jul 28, 2005, at 9:28 AM, Jerry Cottingham wrote:

On Jul 28, 2005, at 8:57 AM, Ran Atkinson wrote:

    I have some existing UNIX-based (i.e. not Carbon/Cocoa) software
that uses the POSIX Asynchronous I/O interfaces.  These seem not
to be present in Darwin (MacOS X 10.4), at least if unistd.h is
to be believed.


async io is there in Tiger.

look at:
bsd/sys/aio.h
bsd/kern/kern_aio.c

POSIX requires that _POSIX_ASYNCHRONOUS_IO be defined to 200112L in <unistd.h> *ONLY* if you fully support all aspects of the API features for that option group.

The MacOS X implementation supports all important aspects of the [AIO] feature group, but not all possible aspects.

In particular, we don't support the O_DSYNC argument to aio_fsync().

-- Terry
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Follow-Ups:

Re: POSIX Async I/O
From: Ran Atkinson <email@hidden>
Re: POSIX Async I/O
From: Ran Atkinson <email@hidden>


References:  
  >POSIX Async I/O (From: Ran Atkinson <email@hidden>)
  >Re: POSIX Async I/O (From: Jerry Cottingham <email@hidden>)




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