公开(公告)号：JPH1173235A

公开(公告)日：1999-03-16

申请号：JP15287598

申请日：1998-06-02

Applicant: IBM

Inventor： KUBALA JEFFREY P ,  MATHIAS THOMAS B ,  SIEGEL IRA G ,  WHITNEY DAVID E

IPC: G06F1/04 ,  G01R31/3185 ,  G06F1/14 ,  G06F11/267

Abstract: PROBLEM TO BE SOLVED: To synchronize a selected logical section of the section information processing system with a test date source by specifying a test section which constitutes test sysplex together with a start test clock value. SOLUTION: A computer system complex 100 includes an external reference clock(ETR) 102 to which central processor complexes(CPC) or a host system 104 is connected. The ETR 102 imparts a common time clock with which the CPCs 104 are synchronized. A system operator can specify a subset of logical sections as test sections by inputting a system clock value, the specified sections are synchronized with the test clock values when they are activated, and actually operating sections are synchronized with an actual operation clock value showing an actual time as usual. Actually, the whole central processor complex 104 is divided into an actually operating sysplex capable of including interactive actually operating sections and a test sysplex capable of interactive test sections.

公开(公告)号：CA2237681C

公开(公告)日：2002-03-26

申请号：CA2237681

申请日：1998-05-14

Applicant: IBM

Inventor： KUBALA JEFFREY P ,  SIEGEL IRA G ,  BELLIN RICHARD A JR

IPC: G06F9/445 ,  G06F9/44

Abstract: A method of replacing a current version of a program module with a replacement version of the module concurrently with the execution of the program on a computer system. While execution of the program is suspended, each address reference in the program to an entry point within the current version of the module is replaced with an address reference to the corresponding entry point within the replacement version of the module. After the address references have been replaced and before execution is resumed, a patch initialization routine is invoked to perform initialization functions such as storage allocation, table initialization and feature detection that are performed before execution of the concurrently applied patch. Execution of the program is resumed when each address reference to the current module has been replaced with one to the replacement module and the patch initialization routine has been performed. A bit vector is used to ensure that each initialization function is performed only once per instantiation of the program being patched. An available storage value indicates the amount of initially allocated storage remaining available after performing an initialization function involving storage allocation.

公开(公告)号：CA2237681A1

公开(公告)日：1998-11-28

申请号：CA2237681

申请日：1998-05-14

Applicant: IBM

Inventor： BELLIN RICHARD A JR ,  SIEGEL IRA G ,  KUBALA JEFFREY P

IPC: G06F9/445 ,  G06F9/44

Abstract: A method of replacing a current version of a program module with a replacement version of the module concurrently with the execution of the program on a computer system. While execution of the program is suspended, each address reference in the program to an entry point within the current version of the module is replaced with an address reference to the corresponding entry point within the replacement version of the module. After the address references have been replaced and before execution is resumed, a patch initialization routine is invoked to perform initialization functions such as storage allocation, table initialization and feature detection that are performed before execution of the concurrently applied patch. Execution of the program is resumed when each address reference to the current module has been replaced with one to the replacement module and the patch initialization routine has been performed. A bit vector is used to ensure that each initialization function is performed only once per instantiation of the program being patched. An available storage value indicates the amount of initially allocated storage remaining available after performing an initialization function involving storage allocation.