Identifying user managed software modules

Patent metadata

Field	Value
Publication number	US-9495149-B1
Application number	US-201615093110-A
Country	US
Kind code	B1
Filing date	Apr 7, 2016
Priority date	Dec 18, 2015
Publication date	Nov 15, 2016
Grant date	Nov 15, 2016

Abstract

A method for identifying user managed software modules includes: receiving a request for a directed load of a software module into memory, wherein the request includes an address for storing the software module; storing the software module at the address in the received request; adding a name and an address range of the stored software module to a data structure identifying software modules that have been loaded into memory via directed loads; receiving a query that includes an input module name or an input address range; and responsive to determining that the input module name or input address range of the received query is not stored in one or more data structures identifying one or more software modules that have been loaded into memory without directed loads, searching the data structure identifying software modules that have been loaded into memory via directed loads for the respective query.

First claim

What is claimed is:

1. A computer-implemented method comprising:
providing, by a computer system, one or more system control blocks identifying software modules that have been loaded into memory without directed loads, and a directed load table identifying software modules that have been loaded into memory via directed loads, wherein the directed load table includes a wrapping feature that replaces older entries when space for newer entries is required;
receiving, by the computer system, a request for a directed load of a software module into memory, wherein the request for the directed load includes an address for storing the software module;
storing, by the computer system, the software module at the address according to the received request;
adding, by the computer system, a name and an address range of the stored software module to the directed load table;
receiving, by the computer system, a first query that includes an input module name;
responsive to determining that the input module name of the received first query is not stored in the one or more system control blocks, searching, by the computer system, the directed load table for the input module name of the received first query;
responsive to determining that the input module name of the received first query is stored in the directed load table, returning, by the computer system, an address range associated with a software module matching the input module name in the directed load table;
receiving, by the computer system, a second query that includes an input address range;
responsive to determining that the input address range of the received second query is not stored in the one or more system control blocks, searching, by the computer system, the directed load table for the input address range of the received second query;
responsive to determining that the input address range of the received second query is stored in the directed load table, returning, by the computer system, a name associated with a software module matching the input address range in the directed load table;
receiving, by the computer system, a third query that includes an input module name or an input address range;
responsive to determining that the input module name or input address range of the received third query is not stored in the one or more system control blocks, searching, by the computer system, the directed load table for the input module name or input address range of the received second query; and
responsive to determining that the input module name or input address range of the received third query is not stored in the directed load table, returning, by the computer system, an indication that no match has been found.

Assignees

• IBM

Inventors

• Relson Peter J
• Thiemann Ulrich

Classifications

• G06F9/44521 Primary

  Dynamic linking or loading; Link editing at or after load time, e.g. Java class loading · CPC title

• G06F8/70 Primary

  Software maintenance or management · CPC title

• G06F9/46

  Multiprogramming arrangements · CPC title

• G06F16/245 Primary

  Query processing · CPC title

• G06F16/2282

  Tablespace storage structures; Management thereof · CPC title