Identifying user managed software modules

Patent metadata

Field	Value
Publication number	US-10102244-B2
Application number	US-201615381481-A
Country	US
Kind code	B2
Filing date	Dec 16, 2016
Priority date	Dec 18, 2015
Publication date	Oct 16, 2018
Grant date	Oct 16, 2018

Abstract

A computer system for identifying user managed software modules includes program instructions for: receiving a request for a directed load of a software module into memory, wherein the request includes an address; 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 system comprising:
one or more computer processors;
one or more computer readable storage media;
program instructions stored on the computer readable storage media for execution by at least one of the one or more processors, the program instructions comprising:
program instructions to provide 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;
program instructions to receive 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;
program instructions to store the software module at the address according to the received request;
program instructions to add a name and an address range of the stored software module to the directed load table;
program instructions to receive a first query that includes an input module name;
program instructions to, responsive to determining that the input module name of the received first query is not stored in the one or more system control blocks, search the directed load table for the input module name of the received first query;
program instructions to, responsive to determining that the input module name of the received first query is stored in the directed load table, return an address range associated with a software module matching the input module name in the directed load table;
program instructions to receive a second query that includes an input address range;
program instructions to, responsive to determining that the input address range of the received second query is not stored in the one or more system control blocks, search the directed load table for the input address range of the received second query;
program instructions to, responsive to determining that the input address range of the received second query is stored in the directed load table, return a name associated with a software module matching the input address range in the directed load table;
program instructions to receive a third query that includes an input module name or an input address range;
program instructions to, 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, search the directed load table for the input module name or input address range of the received second query; and
program instructions to, 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, return an indication that no match has been found.

Assignees

• IBM

Inventors

• Relson Peter J
• Thiemann Ulrich

Classifications

• G06F8/70

  Software maintenance or management · CPC title

• G06F17/30424 Primary

  Physics · mapped topic

• G06F17/30339

  Physics · mapped topic

• G06F9/44521 Primary

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

• G06F9/44557

  Code layout in executable memory · CPC title