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Re: Named Semaphorse

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Re: Named Semaphorse

Subject: Re: Named Semaphorse
From: Terry Lambert <email@hidden>
Date: Thu, 24 Apr 2008 11:19:10 -0700

On Apr 24, 2008, at 9:57 AM, Duane Murphy wrote:

Is it possible to use named semaphores to "communicate" from the kernel to user space?

No.

We have an application where on another platform (Windows), the kernel
module uses a named semaphore to trigger a user space application.

Is there anything like that for Mac OS X?

Ideas, recommendations?


IOUserClient is typical:

	<http://developer.apple.com/samplecode/SimpleUserClient/index.html>

You can also use control sockets:

<http://developer.apple.com/documentation/Darwin/Conceptual/NKEConceptual/control/chapter_4_section_2.html >

Or you can use an ioctl()/fcntl() into your driver.  See also:

<http://developer.apple.com/documentation/Darwin/Conceptual/KernelProgramming/boundaries/chapter_14_section_3.html#//apple_ref/doc/uid/TP30000905-CH217-TPXREF110 >

-- Terry
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  >Named Semaphorse (From: "Duane Murphy" <email@hidden>)




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