公开(公告)号：DE69326272T2

公开(公告)日：2000-04-20

申请号：DE69326272

申请日：1993-03-08

Applicant: IBM

Inventor： ELKO DAVID ARLEN ,  FREY JEFFREY ALAN ,  HELFFRICH AUDREY ANN ,  ISENBERG JOHN FRANKLIN ,  NICK JEFFREY MARK ,  STRICKLAND JIMMY PAUL ,  SWANSON MICHAEL DUSTIN ,  MOORE BRIAN BARRY

IPC: G06F3/06 ,  G06F9/46 ,  G06F9/52 ,  G06F12/14 ,  G06F15/17

Abstract: A list data structure is provided within a Structured External Storage (SES) processor attached to one or more processors. Applications executing on the processors share data within the list data structure, and are provided mechanisms for conditionally executing commands at the SES. The conditional operation of complex data object operations is based upon an atomically executed predicate operation which verifies the presumed state of the data object before allowing any further data object manipulation. Modification of state information may also be atomically performed. The SES operations are initiated by a command sent as a message across the processor-SES interface.

公开(公告)号：DE69327679T2

公开(公告)日：2000-07-06

申请号：DE69327679

申请日：1993-03-08

Applicant: IBM

Inventor： ELKO DAVID ARLEN ,  HELFFRICH AUDREY ANN ,  ISENBERG JR ,  MOORE BRIAN BARRY ,  NICK JEFFREY MARK ,  SWANSON MICHAEL DUSTIN ,  WILLIAMS JOSEPH ARTHUR

IPC: G06F13/00 ,  G06F13/12 ,  G06F15/17 ,  G06F15/173 ,  G06F15/16 ,  G06F12/08

Abstract: A mechanism for communicating messages, each including a command and a response, in a network having central processing complexes (CPCs) and one or more coupling facilities. Each coupling facility has a central processor for executing instructions and a main storage. Messages are sent from a message control block in the main storage of the CPC sending the message, and the response to the message is received in a message response block of the CPC without an interrupt to the program being executed by the central processor of the CPC. Each message from a CPC to the coupling facility may include a command and an indicator bit which instructs the coupling facility to execute the command either in synchronism with or asynchronously to the execution of the sending processor. The coupling facility executes the command and returns a response which is received in a message response block of the main storage of the sending CPC without an interrupt to any program being executed by the central processor of that CPC.

公开(公告)号：BR8903786A

公开(公告)日：1990-03-20

申请号：BR8903786

申请日：1989-07-28

Applicant: IBM

Inventor： BROWN DAVID DOUGLAS ,  MORSCHHAUSER WAYNE JOHN ,  REINHEIMER RICK P ,  SWANSON MICHAEL DUSTIN

IPC: G06F9/44 ,  G06F12/00 ,  G06F12/08 ,  G06F12/10 ,  G06F12/12 ,  G06F15/20

Abstract: A virtual lookaside facility is provided for maintaining named data objects in class-related data spaces in virtual storage, readily retrievable by user programs. A search order is associated with each user, specifying an ordered list of "major named" which are, in effect, sequentially searched for a specified "minor name", or data object, to obtain a virtual storage copy of that data object. As data objects are placed into a virtual cache, existence information, implicit in the naming structure, is captured and saved. This information is relied on later in retrieving objects from the cache. The data isolation provided by maintaining class data and control blocks in individual data spaces is exploited to prevent failures relating to one class of objects from affecting the others, and to handle latent program users, following failures, effectively. An LRU-like trimming technique is used to remove less useful objects from the cache when cache space is fully utilized.

公开(公告)号：AT189324T

公开(公告)日：2000-02-15

申请号：AT93103645

申请日：1993-03-08

Applicant: IBM

Inventor： ELKO DAVID ARLEN ,  HELFFRICH AUDREY ANN ,  ISENBERG JOHN FRANKLIN JR ,  MOORE BRIAN BARRY ,  NICK JEFFREY MARK ,  SWANSON MICHAEL DUSTIN ,  WILLIAMS JOSEPH ARTHUR

IPC: G06F13/00 ,  G06F13/12 ,  G06F15/17 ,  G06F15/173 ,  G06F15/16 ,  G06F12/08

Abstract: A mechanism for communicating messages, each including a command and a response, in a network having central processing complexes (CPCs) and one or more coupling facilities. Each coupling facility has a central processor for executing instructions and a main storage. Messages are sent from a message control block in the main storage of the CPC sending the message, and the response to the message is received in a message response block of the CPC without an interrupt to the program being executed by the central processor of the CPC. Each message from a CPC to the coupling facility may include a command and an indicator bit which instructs the coupling facility to execute the command either in synchronism with or asynchronously to the execution of the sending processor. The coupling facility executes the command and returns a response which is received in a message response block of the main storage of the sending CPC without an interrupt to any program being executed by the central processor of that CPC.

公开(公告)号：ES2141733T3

公开(公告)日：2000-04-01

申请号：ES93103645

申请日：1993-03-08

Applicant: IBM

Inventor： ELKO DAVID ARLEN ,  HELFFRICH AUDREY ANN ,  ISENBERG JOHN FRANKLIN JR ,  MOORE BRIAN BARRY ,  NICK JEFFREY MARK ,  SWANSON MICHAEL DUSTIN

IPC: G06F13/00 ,  G06F13/12 ,  G06F15/17 ,  G06F15/173 ,  G06F15/16 ,  G06F12/08

Abstract: A mechanism for communicating messages, each including a command and a response, in a network having central processing complexes (CPCs) and one or more coupling facilities. Each coupling facility has a central processor for executing instructions and a main storage. Messages are sent from a message control block in the main storage of the CPC sending the message, and the response to the message is received in a message response block of the CPC without an interrupt to the program being executed by the central processor of the CPC. Each message from a CPC to the coupling facility may include a command and an indicator bit which instructs the coupling facility to execute the command either in synchronism with or asynchronously to the execution of the sending processor. The coupling facility executes the command and returns a response which is received in a message response block of the main storage of the sending CPC without an interrupt to any program being executed by the central processor of that CPC.

公开(公告)号：DE69327679D1

公开(公告)日：2000-03-02

申请号：DE69327679

申请日：1993-03-08

Applicant: IBM

Inventor： ELKO DAVID ARLEN ,  HELFFRICH AUDREY ANN ,  ISENBERG JR ,  MOORE BRIAN BARRY ,  NICK JEFFREY MARK ,  SWANSON MICHAEL DUSTIN ,  WILLIAMS JOSEPH ARTHUR

IPC: G06F13/00 ,  G06F13/12 ,  G06F15/17 ,  G06F15/173 ,  G06F15/16 ,  G06F12/08

Abstract: A mechanism for communicating messages, each including a command and a response, in a network having central processing complexes (CPCs) and one or more coupling facilities. Each coupling facility has a central processor for executing instructions and a main storage. Messages are sent from a message control block in the main storage of the CPC sending the message, and the response to the message is received in a message response block of the CPC without an interrupt to the program being executed by the central processor of the CPC. Each message from a CPC to the coupling facility may include a command and an indicator bit which instructs the coupling facility to execute the command either in synchronism with or asynchronously to the execution of the sending processor. The coupling facility executes the command and returns a response which is received in a message response block of the main storage of the sending CPC without an interrupt to any program being executed by the central processor of that CPC.

公开(公告)号：DE69326272D1

公开(公告)日：1999-10-14

申请号：DE69326272

申请日：1993-03-08

Applicant: IBM

Inventor： ELKO DAVID ARLEN ,  FREY JEFFREY ALAN ,  HELFFRICH AUDREY ANN ,  ISENBERG JOHN FRANKLIN ,  NICK JEFFREY MARK ,  STRICKLAND JIMMY PAUL ,  SWANSON MICHAEL DUSTIN ,  MOORE BRIAN BARRY

IPC: G06F3/06 ,  G06F9/46 ,  G06F9/52 ,  G06F12/14 ,  G06F15/17

Abstract: A list data structure is provided within a Structured External Storage (SES) processor attached to one or more processors. Applications executing on the processors share data within the list data structure, and are provided mechanisms for conditionally executing commands at the SES. The conditional operation of complex data object operations is based upon an atomically executed predicate operation which verifies the presumed state of the data object before allowing any further data object manipulation. Modification of state information may also be atomically performed. The SES operations are initiated by a command sent as a message across the processor-SES interface.