Enhanced management of thread-local objects

Patent metadata

Field	Value
Publication number	US-9697054-B2
Application number	US-201514867105-A
Country	US
Kind code	B2
Filing date	Sep 28, 2015
Priority date	Sep 28, 2015
Publication date	Jul 4, 2017
Grant date	Jul 4, 2017

Abstract

A method, executed by a computer, includes receiving a request to instantiate an instance of a thread-local manager for a particular thread, instantiating the instance of the thread-local manager, and providing global visibility to the instance of the thread-local manager. The method further includes manipulating thread-local variables corresponding to the particular thread and removing all the thread-local variables when the particular thread completes a task. A computer system and computer program product corresponding to the above method are also disclosed herein.

First claim

What is claimed is:

1. A computer program product comprising:
one or more computer readable storage media and program instructions stored on the one or more computer readable storage media, the program instructions comprising instructions to:
receive a request to instantiate an instance of a thread-local manager for a particular thread-local variable of a particular thread, wherein the instance of the thread-local manager only has access to the particular thread-local variable;
instantiate the instance of the thread-local manager;
provide global visibility to the instance of the thread-local manager, wherein the global visibility enables the instance of the thread-local manager to manage all thread-local variables of the particular thread, wherein prior to providing the global visibility, all of the thread-local variables other than the particular thread-local variable are restricted to be managed by other corresponding instances of thread-local manager;
call the instance of the thread-local manager to manipulate all thread-local variables corresponding to the particular thread; and
send a single command to the instance of the thread-local manger to remove all the thread-local variables when the particular thread completes a task.

2. The computer program product of claim 1 , wherein the program instructions comprise instructions to implement, by the instance of the thread-local manager, all capabilities corresponding to a native thread-local manager.

3. The computer program product of claim 1 , wherein the program instructions comprise instructions to restrict instantiation of the thread-local manager to a single instance corresponding to the particular thread-local variable of the particular thread.

4. The computer program product of claim 1 , wherein the instructions to manipulate the thread-local variables comprise instructions for one or more of initializing, adding, setting, getting, and removing the thread-local variables.

5. The computer program product of claim 1 , wherein the program instructions comprise instructions to provide, by the instance of the thread-local manager, a command to remove all of the thread-local variables.

6. The computer program product of claim 1 , wherein the task is part of a computer program that is ready to run.

7. 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 computer processors, the program instructions comprising instructions to:
receive a request to instantiate an instance of a thread-local manager for a particular thread-local variable of a particular thread, wherein the instance of the thread-local manager only has access to the particular thread-local variable;
instantiate the instance of the thread-local manager;
provide global visibility to the instance of the thread-local manager, wherein the global visibility enables the instance of the thread-local manager to manage all of thread-local variables of the particular thread, wherein prior to providing the global visibility, all of the thread-local variables other than the particular thread-local variable are restricted to be managed by other corresponding instances of thread-local manager;
call the instance of the thread-local manager to manipulate all thread-local variables corresponding to the particular thread; and
send a single command to the instance of the thread-local manger to remove all the thread-local variables when the particular thread completes a task.

8. The computer system of claim 7 , wherein the program instructions comprise instructions to implement, by the instance of the thread-local manager, all capabilities corresponding to a native thread-local manager.

9. The computer system of claim 7 , wherein the program instructions comprise instructions to restrict instantiation of the thread-local manager to a single instance corresponding to the particular thread-local variable of the particular thread.

10. The computer system of claim 7 , wherein the instructions to manipulate the thread-local variables comprise instructions for one or more of initializing, adding, setting, getting, and removing the thread-local variables.

11. The computer system of claim 7 , wherein the program instructions comprise instructions to provide, by the instance of the thread-local manager, a command to remove all of the thread-local variables.

Assignees

• IBM

Inventors

• Bohm Fraser P
• Hargreaves Ivan D

Classifications

• G06F9/52 Primary

  Program synchronisation; Mutual exclusion, e.g. by means of semaphores · CPC title

• G06F8/36 Primary

  Software reuse · CPC title

• G06F2209/5018

  Thread allocation · CPC title

• G06F9/5027

  the resource being a machine, e.g. CPUs, Servers, Terminals · CPC title

• G06F8/31 Primary

  Programming languages or programming paradigms · CPC title