Method and system for object management across process boundries in a data processing system

• US 5,396,630 A
• Filed: 10/06/1992
• Issued: 03/07/1995
• Est. Priority Date: 10/06/1992
• Status: Expired due to Fees

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Tuatini, Jeffrey T., Banda, Venu P., Snyder, Scott E., Selby, Robert F.
• Primary Examiner(s): Kriess, Kevin A.
• Application Number:
  US07/957,339
• Time in Patent Office: 882 Days
• Field of Search: 395/650, 395/700
• US Class Current: 719/316
• CPC Class Codes: G06F 9/465 Distributed object oriented systems remote method invocation [RMI] G06F9/548
• CPC Class Codes: G06F 9/546 Message passing systems or structures, e.g. queues

Abstract

The present invention provides a method and system in a data processing system, having a multitasking operating system which includes a plurality of processes, for providing communication between objects executing within the processes in the multitasking operating system, the method and system includes registering an object within a communications manager in response to a launching of the object. The communications manager monitors all objects registered with the communications manager within the plurality of processes. A determination of whether a first object is registered is made utilizing the communications manager, in response to receiving a request from a second object to send a message to the first object. Automatic initiation of the launching the first object within the processes is performed if the first object is unregistered utilizing the communications manager. Next, the first process containing the first object is bound to the second process containing the second object, wherein a communications path is established between the first process and the second of the process. The message is sent to the first object from the second object via the established communications path between the two processes, wherein communication between the first object and the second object is automatically established.

Claims

1. A method in a data processing system, having a multitasking operating system which includes a plurality of processes, for providing communication between a plurality of objects executing within said plurality of processes in said multitasking operating system, said method comprising the computer implemented steps of:

registering an object with a communications manager in response to a launching of said object by said object manager;

determining whether a first object is registered with said communications manager, in response to receiving a request from a second object within said plurality of processes to send a message to said first object;

automatically initiating launching of said first object within said plurality of processes utilizing said communications manager if said first object is unregistered;

binding a first of said plurality of processes containing said first object to a second of said plurality of processes containing said second object, wherein a communications path is established between said first of said plurality of processes and said second of said plurality of processes; and

sending said message to said first object within said first of said plurality of processes from said second object in said second of said plurality of processes via said established communications path between said first of plurality of processes and said second of plurality of processes, wherein communication between said first object and said second object is automatically established.

2. The method of claim 1 further comprising registering an object in response to a request for communication with said communications manager by said object.

3. The method of claim 2, wherein said communications manager registers an object by storing data for an object within a mapping table, wherein said mapping table contains an entry for each object registered by said communications manager.

4. The method of claim 3, wherein said entry includes an identifier identifying the process in which said registered object has been launched.

5. The method of claim 4, wherein said entry further includes a pointer to said object.

6. The method of claim 5, wherein said binding of said first of said plurality of processes to said second of said plurality of processes includes sending said second of said plurality of processes binding data for said first of said plurality of processes.

7. The method of claim 6, wherein each of said plurality of processes includes a message dispatcher for managing communications within a process and between processes, wherein said message dispatcher has a communications path to said communications manager.

8. The method of claim 7, wherein said message dispatcher for a process maintains a data structure having a list of all objects within said process and all objects in other processes having a communications path to said process.

9. A method in a data processing system, having a multitasking operating system which includes a plurality of processes, for providing communication between a plurality of objects executing within said plurality of processes in said multitasking operating system, said method comprising the computer implemented steps of:

registering an object with a communications manager in response to a launching of said object by said object manager, wherein said communications manager monitors all objects registered to said communications manager within said plurality of processes;

determining whether a first object is registered with said object manager in response to receiving a request from a second object within said plurality of processes to send a message to said first object;

automatically searching said plurality of processes for a process containing a class for said first object within said plurality of processes if said first object is unregistered and if a process containing said class is present, automatically initiating launching of said first object within said process containing said class for said first object;

binding said process containing said class for said first object to a second of said plurality of processes containing said second object, wherein a communications path is established between said process containing said class and said second of said plurality of processes; and

sending said message to said first object within said process containing said class and said second object within said second of said plurality of processes via said established communications path between said process containing class and said second of plurality of processes, wherein communication between said first object and said second object is automatically established.

10. A data processing system, having a multitasking operating system which includes a plurality of processes, for providing communication between a plurality of objects executing within said plurality of processes in said multitasking operating system, said data processing system comprises:

registration means for registering an object with a communications manager in response to a launching of said object by said object manager;

determining means for determining whether a first object is registered with said communications manager in response to receiving a request from a second object within said plurality of processes to send a message to said first object;

initiation means for automatically initiating launching of said first object within said plurality of processes utilizing said communications manager if said first object is unregistered;

binding means for binding a first of said plurality of processes containing said first object to a second of said plurality of processes containing said second object, wherein a communications path is established between said first of said plurality of processes and said second of said plurality of processes; and

sending means for sending said message to said first object within said first of said plurality of processes from said second object in said second of said plurality of processes via said established communications path between said first of plurality of processes and said second of plurality of processes, wherein communication between said first object and said second object is automatically established.

11. The data processing system of claim 10 further comprising means for registering an object in response to a request for communication with said communications manager by said object.

12. The data processing system of claim 11, wherein said communications manager registers an object utilizing means for storing data for an object within a mapping table, wherein said mapping table contains an entry for each object registered by said communications manager.

13. The data processing system of claim 12, wherein said entry includes an identifier identifying the process in which said registered object has been launched.

14. The data processing system of claim 13, wherein said entry further includes a pointer to said object.

15. The data processing system of claim 14, wherein said binding means includes means for sending said second of said plurality of processes binding data for said first of said plurality of processes.

16. The data processing system of claim 15, wherein each of said plurality of processes includes a message dispatcher for managing communications within a process and between processes, wherein said message dispatcher has a communications path to said communications manager.

17. The data processing system of claim 16, wherein said message dispatcher includes means for maintaining a data structure having a list of all objects within a process and all objects in other processes having a communications path to said process.

18. A data processing system, having a multitasking operating system which includes a plurality of processes, for providing communication between a plurality of objects executing within said plurality of processes in said multitasking operating system, said method comprising the computer implemented steps of:

means for registering an object with a communications manager in response to a launching of said object by said communications manager, wherein said object manager monitors all objects registered to said communications manager within said plurality of processes;

means for determining whether a first object is registered with said communications manager in response to receiving a request from a second object within said plurality of processes to send a message to said first object;

means for automatically searching said plurality of processes for a process containing said class for said first object within said plurality of processes if said first object is unregistered and if a process containing said class is present, means for automatically initiating launching of said first object within said process containing said class for said first object;

means for binding said process containing said class for said first object to a second of said plurality of processes containing said second object, wherein a communications path is established between said process containing said class and said second of said plurality of processes; and

means for sending said message to said first object within said process containing class and said second object within said second of said plurality of processes via said established communications path between said process containing class and said second of plurality of processes, wherein communication between said first object and said second object is automatically established.