RE: Passing ownership of object locks?

 I keep seeing references to 'Mutexes'  At the risk of ????

1. What is a 'mutex' ?
2. Use ?
3. Where can I find info?

TIA

-----Original Message-----
From:   Vernon Hamberg [SMTP:hambergv@goldengate.net]
Sent:   Wednesday, April 29, 1998 6:38 AM
To:     MIDRANGE-L@midrange.com
Cc:     bvining@vnet.IBM.COM
Subject:        Re: Passing ownership of object locks?

Bruce

At 12:49 PM 2/6/1998 CST, you wrote:
>John,
>
>I don't know that I ever saw an answer to your question of a while back,
>but for MI users (either directly or with ILE C/400) Mutex support is
>provided.  In QSYSINC/MIH header file you can find the includes for
>instructions such as CRTMTX (Create Mutex), LOCKMTX (Lock Mutex),
>MATMTX (Materialize Mutex), etc.  Mutex support has been in the system
>since V3r1 and is documented in the MI Functional Reference.
>
>To date there are, however, no callable APIs provided for Mutexes.
>
>Bruce Vining
>
>>
>>To follow up on this thread are mutexes available On the AS400?
>>Although  WRKACTJOB has an option to display job mutexes I have never
>>been able to find any reference in any manuals about this.
>>
>>On other systems mutexes are often used to perform an IF-ACTIVE type
>>function.  Does anybody know where I can find more information on
>>mutexes on the AS400 ?
>>
>>John L. Hall
>>Home Sales Company

Have I heard that any C functions can be called from ILE RPG, too? With
appropriate prototype declarations?

Cheers

Vernon Hamberg
Systems Software Programmer
Old Republic National Title Insurance Company
400 Second Avenue South
Minneapolis, MN  55401-2499
(612) 371-1111 x480


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