Regaining control of a processing resource that executes an external execution context

Patent metadata

Field	Value
Publication number	US-9417914-B2
Application number	US-13112708-A
Country	US
Kind code	B2
Filing date	Jun 2, 2008
Priority date	Jun 2, 2008
Publication date	Aug 16, 2016
Grant date	Aug 16, 2016

Abstract

A scheduler in a process of a computer system allows an external execution context to execute on a processing resource allocated to the scheduler. The scheduler provides control of the processing resource to the external execution context. The scheduler registers for a notification of an exit event associated with the external execution context. In response to receiving the notification that the exit event has occurred, the scheduler regains control of the processing resource and causes a task associated with an execution context controlled by the scheduler to be executed by the processing resource.

First claim

What is claimed is:

1. A method performed by a scheduler of a process executing on a computer system, the method comprising:
providing a first processing resource of the scheduler for use by a first execution context such that the first processing resource is not under control of the scheduler, the first execution context is external to the scheduler and is created and controlled by the process;
registering for a notification of an exit event associated with the first external context; and
regaining control of the first processing resource in response to receiving the notification of the exit event.

2. The method of claim 1 further comprising:
executing the first execution context with the first processing resource.

3. The method of claim 1 further comprising:
executing a task of the scheduler on the first processing resource subsequent to regaining control of the first processing resource.

4. The method of claim 3 further comprising:
associating the task with a second execution context prior to executing the task.

5. The method of claim 4 wherein the scheduler created the second execution context.

6. The method of claim 1 further comprising:
executing a task of the scheduler on the first processing resource prior to providing the first processing resource for use by the first execution context.

7. The method of claim 1 further comprising:
registering for the notification of the exit event associated with the first execution context with one of an operating system or a runtime environment.

8. The method of claim 1 further comprising:
executing a task of the scheduler on a second processing resource of the scheduler subsequent to providing the first processing resource for use by the first execution context and prior to regaining control of the first processing resource.

9. The method of claim 1 wherein the first processing resource includes a virtual processor and a hardware thread.

10. A system comprising:
processor packages and memory configured to:
execute a scheduler in a process to provide a processing resource allocated to the scheduler for use by an autonomous execution context external to the scheduler, the autonomous execution context is created and controlled by the process;
execute a runtime environment;
execute an operating system;
one of the execution of the runtime environment and the execution of the operating system to:
receive a request for a notification of an exit event associated with the autonomous execution context executing on the processing resource allocated to the scheduler in the process; and
provide the notification of the exit event to the scheduler in response to detecting that the exit event has occurred.

11. The system of claim 10 , one of the execution of the runtime environment and the execution of the operating system to:
add a handle identifying the autonomous execution context to a wait array.

12. The system of claim 10 , one of the execution of the runtime environment and the execution of the operating system to:
detect that the exit event has occurred by detecting that the autonomous execution context has exited.

13. The system of claim 10 wherein the autonomous execution context controls the processing resource of the scheduler.

14. A computer readable hardware storage device storing computer-executable instructions that, when executed by a computer system, perform a method comprising:
executing a first execution context on a processing resource provided from a scheduler of a process to the first execution context such that the processing resource is not under control of the scheduler, the first execution context is external to the scheduler and is created and controlled by the process;
registering for a notification of an exit event associated with the first execution context provided to the scheduler in the process executing on the computer system; and
executing a first task on the processing resource subsequent to receiving the notification of the exit event.

15. The computer readable hardware storage device of claim 14 , the method further comprising:
creating the first execution context with the process prior to providing the first execution context to the scheduler.

16. The computer readable hardware storage device of claim 14 , the method further comprising:
creating a second execution context with the scheduler; and
associating the first task with the second execution context prior to executing the task.

17. The computer readable hardware storage device of claim 14 , the method further comprising:
converting the first execution context in the process to an autonomous execution context that includes the first execution context that gains control of the processing resource.

18. The computer readable hardware storage device of claim 14 , the method further comprising:
registering for the notification of the exit event with one of an operating system or a runtime environment.

19. The computer readable hardware storage device of claim 14 , the method further comprising:
executing a second task of the scheduler on a second processing resource of the scheduler while executing the first execution context on the first processing resource.

20. The computer readable hardware storage device of claim 14 wherein the first processing resource includes a virtual processor and a hardware thread.

Assignees

• Ringseth Paul
• Fernandes Genevieve
• Microsoft Technology Licensing Llc

Inventors

• Ringseth Paul
• Fernandes Genevieve

Classifications

• G06F9/5016

  the resource being the memory · CPC title

• G06F9/5011

  the resources being hardware resources other than CPUs, Servers and Terminals · CPC title

• G06F9/50 Primary

  Allocation of resources, e.g. of the central processing unit [CPU] · CPC title

• G06F9/5022

  Mechanisms to release resources · CPC title

• G06F9/5027 Primary

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