METHOD FOR QUEUING MESSAGE AND PROGRAM RECORDING MEDIUM THEREOF

• US 20100083031A1
• Filed: 06/29/2009
• Published: 04/01/2010
• Est. Priority Date: 09/30/2008
• Status: Active Grant

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Yamamoto, Shoji, Tanaka, Tamaki, Koike, Yasuo
• Granted Patent: US 8,201,017 B2
• Time in Patent Office: Days
• US Class Current: 714/3
• CPC Class Codes: G06F 11/1482 by means of middleware or OS functionality
• CPC Class Codes: G06F 11/2025 using centralised failover control functionality
• CPC Class Codes: G06F 11/2028 eliminating a faulty processor or activating a spare

Abstract

According to an aspect of the embodiment, a message queuing unit of the message processing apparatus stores received messages. A message reception control unit receives a notification of destinations of messages, extracts only the messages for current processes based on a process control table recording current or standby of processes, and transmits the messages to corresponding applications as current processes. On the other hand, the message reception control unit does not transmit the messages to the applications as standby processes.

Claims

1. A method for queuing a message in a computer executing transmission and reception of messages between a transmission application that transmits messages and a plurality of reception applications that are multiplexed and receive the messages, the message queuing method comprising:

acquiring a maximum current number and activated processes that are activated, the maximum current number indicating a maximum number of processes that can be set as current for the reception applications, and thereby setting a state of one of current and standby for each activated process in a process control table;

applying a queuing process to a message from the transmission application; and

maintaining a state in which communication with all processes set in the process control table is possible, and extracting and transmitting the queued message only to the processes which are set as current.

2. The method according to claim 1, further comprising:

a communication management step for monitoring a communication state of the processes which are set as current to detect a communication failure,

wherein the step of acquiring further comprises changing the setting of at least one process which is set as standby in the process control table to current when a communication failure of a process which is set as current is detected.

3. The method according to claim 1, wherein the step of acquiring further comprises accepting the addition of a process of the reception applications, adding the accepted process to the process control table, and setting the added process to standby when the number of processes which are set as current in the process control table is equal to or greater than the maximum current number.

4. The method according to claim 1, wherein the step of acquiring further comprises accepting the addition of a process of the reception applications, adding the accepted process to the process control table, and setting one of the process which is set as standby in the process control table and the added process to current when the number of processes which are set as current on the process control table is less than the maximum current number.

5. A computer readable recording medium recording a message queuing program for queuing a message in a computer executing transmission and reception of messages between a transmission application that transmits messages and a plurality of reception applications that are multiplexed and receive the messages, the message queuing program causing the computer to execute the operations of:

acquiring a maximum current number and activated processes that are activated, the maximum current number indicating a maximum number of processes that can be set as current for the reception applications, and thereby setting a state of one of current and standby for each activated process in a process control table;

applying a queuing process to a message from the transmission application; and

maintaining a state in which communication with all processes set in the process control table is possible, and extracting and transmitting the queued message only to the processes which are set as current.