Why CSST?

2007-06-01 Thread John R. Ehrman (408-463-3543 T/543-)
Answers to this and many other questions about new instructions will be provided by the lead z/architect in session 8190 at the August SHARE conference. John Ehrman (-- Referenced Note Follows ) Date:Thu, 31 May 2007 17:48:18 +0300 From:Binyamin

Why CSST?

2007-05-31 Thread Binyamin Dissen
What does CSST give over PLO? -- Binyamin Dissen [EMAIL PROTECTED] http://www.dissensoftware.com Director, Dissen Software, Bar Grill - Israel Should you use the mailblocks package and expect a response from me, you should preauthorize the dissensoftware.com domain. I very rarely bother

Re: Why CSST?

2007-05-31 Thread McKown, John
-Original Message- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Binyamin Dissen Sent: Thursday, May 31, 2007 9:48 AM To: IBM-MAIN@BAMA.UA.EDU Subject: Why CSST? What does CSST give over PLO? -- Binyamin Dissen [EMAIL PROTECTED] I don't

Re: Why CSST?

2007-05-31 Thread Edward Jaffe
Binyamin Dissen wrote: What does CSST give over PLO? The new instruction may be a hardware implementation of this functionality. -- Edward E Jaffe Phoenix Software International, Inc 5200 W Century Blvd, Suite 800 Los Angeles, CA 90045 310-338-0400 x318 [EMAIL PROTECTED]

Re: Why CSST?

2007-05-31 Thread Bob Shannon
What does CSST give over PLO? I don't understand the question. CSST is a subfunction of PLO. At least according to my older POPS manual. Although there is a CSST option for PLO now there is also an instruction called Compare Swap and Store (CSST). Bob Shannon Rocket Software

Re: Why CSST?

2007-05-31 Thread Jim Phoenix
The standalone CSST instruction is safe to use with the 370 era CS CDS instructions, accessing the same storage location, whereas PLO is not. Binyamin Dissen wrote: What does CSST give over PLO? -- Binyamin Dissen [EMAIL PROTECTED] http://www.dissensoftware.com Director, Dissen Software,

Re: Why CSST?

2007-05-31 Thread McKown, John
-Original Message- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Bob Shannon Sent: Thursday, May 31, 2007 10:42 AM To: IBM-MAIN@BAMA.UA.EDU Subject: Re: Why CSST? What does CSST give over PLO? I don't understand the question. CSST

Re: Why CSST?

2007-05-31 Thread Art Celestini
It uses a different serialization mechanism than PLO. From the POPs: Programming Notes: 1. COMPARE AND SWAP AND STORE may be used in conjunction with other COMPARE AND SWAP or COMPARE DOUBLE AND SWAP instructions to manipulate locks, queue pointers, or other fields that require

Re: Why CSST?

2007-05-31 Thread Tom Schmidt
On Thu, 31 May 2007 17:48:18 +0300, Binyamin Dissen wrote: What does CSST give over PLO? See the latest POO for CSST's description. Specifically programming notes 2 and 4. (Note 2 admonishes one to avoid mixing PLO with Compare Swap instructions for the same data structures, since they

Re: Why CSST?

2007-05-31 Thread Binyamin Dissen
On Thu, 31 May 2007 11:55:21 -0400 Art Celestini [EMAIL PROTECTED] wrote: :It uses a different serialization mechanism than PLO. From the POPs: I saw that. The question was as to the need - what MVS (or VM or Linux) function has this need? :Programming Notes: :1. COMPARE AND SWAP AND STORE