JPH0478947A - High speed completion informing system - Google Patents

Abstract

PURPOSE:To execute the completion notice processing at a high speed by dequeuing a command controller table from the head, and migrating the control to a routine address stored therein. CONSTITUTION:When it is desired to output request commands CMD1 - 3 to an input/output control part 3 from a fundamental communication control part 1, when the respective completions are returned, an address of a routine to be actuated is stored in a command controller table 5, and by queuing to a command control main table in order of outputting a command, the request commands CMD-1 - 3 are outputted to the input/output control part 3. At the time of receiving the completion of the CMDs 1, 2 from the input/output control part 3, a completion receiving routine 2 executes dequeuing of the command controller table 5 from the head, the control is migrated to a routine address stored therein, and when the control is returned from this routine, its command controller table 5 is released, and the same processing is executed to the next command controller table 5. In such a way, the completion notice processing can be executed at a high speed.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a processing method when receiving a notification of completion of a request between devices, and particularly speeds up transition to a processing routine when completion is returned. Regarding completion notification method.

[Conventional technology]

Conventionally, this type of completion notification method has a matrix table that associates which routine to start for each type of completion notification, and when a completion notification is received, the matrix table is searched for that type and control is passed to the found routine. The method was common.

[Problem to be solved by the invention]

In the conventional completion notification method described above, for example, in the case of line connection processing in a communication processing program, there are two types of completion notifications: when a connection request is completed after initialization, and when a connection request is completed after being disconnected due to a failure. Although the processing is different, it is fixedly registered in the matrix table as "completion notification for connection request", so it was necessary to jump to that routine and then distribute to the corresponding processing.

Furthermore, each time a completion notification is received, the matrix table must be read and the table must be searched until the corresponding routine is found.

As described above, there are disadvantages in that the processing cannot be changed depending on the content of the communication, and the transfer of control to the corresponding routine when notification of completion is delayed.

[Means to solve the problem]

The present invention provides a high-speed completion notification method when receiving a completion signal from the second device in response to a request from a first device to the second device between devices, in which the first device communicates with a command control main table. A command controller table is provided, and an address of a routine to be activated when the request command is output to the second device and the completion signal corresponding to the request command is returned is stored in the command controller table, and a communication control unit that queues the command controller table in the command control main table in the order in which commands are issued and outputs the request command to the second device; and receives the completion signal from the second device. At each time, the command control child table is dequeued from the beginning from the command control main table, control is transferred to the routine address stored in the command control child table, and when control returns from the routine, the command control child table is dequeued from the beginning. The present invention is characterized by having a completion acceptance means for releasing the controller table.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is an operational schematic diagram showing an embodiment of the present invention. Note that (a) and (b) below are equivalent to (a) and (b) in Figure 1.
) corresponds to

(a) When you want to output request commands CMD-1, CMD-2, and CMD-3 from the basic communication control unit 1 to the input/output control unit 3, command control the address of the routine you want to start when each completion is returned. Store it in child table 5,
Request commands CMD-1 and CMD-2 are queued in the command control main table 4 in the order in which the commands are issued.
, CMD-3 to the input/output control section 3.

(b) When receiving the completion of CMD-1 and CMD-2 from the input/output control unit 3, the completion reception routine 2 dequeues the command control child table 5 from the beginning without identifying the completed command from the command control main table 4. , transfers control to the routine address stored there, releases the command controller table 5 when control returns from that routine, and dequeues the next command controller table 5 from the head of the queue. Perform similar processing.

By using the command controller table 5 as described above, it is possible to speed up the activation of the specified completion processing routine.

In addition, in this example, it is assumed that the completion of the request is notified in the order in which the request was issued, or it is not guaranteed that the completion of the request is notified in the order in which the request was issued. However, in systems where there are not so many waiting queues, the method using the command controller table 5 is effective.

〔Effect of the invention〕

As explained above, according to the present invention, no matter how many types of requests increase, the processing at the time of notification of completion dequeues the command controller table from the beginning and transfers control to the routine address stored there. This has the effect of speeding up completion notification processing.

[Brief explanation of the drawing]

FIG. 1 is an operational schematic diagram showing an embodiment of the present invention. 1...Basic communication control unit, 2...Completion reception routine,
3... Input/output control unit, 4... Command control main table, 5... Command control child table.

Claims (1)

[Scope of Claims] 1. In a high-speed completion notification method when receiving a completion signal from the second device in response to a request command from the first device to the second device between devices, the first device: A command control main table and a command controller table are provided, and the address of a routine to be activated when the request command is output to the second device and the completion signal corresponding to the request command is returned is stored in the command controller table. a communication control unit that outputs the request commands to the second device by queuing the command controller table in the command control main table in the order in which the request commands are issued; Every time a completion signal is received, the command control child table is dequeued from the beginning from the command control main table, control is transferred to the routine address stored in the command control child table, and control is removed from the routine. A high-speed completion notification method characterized by comprising a completion reception means for releasing the command controller table when returning. 2. In the high-speed completion notification method when receiving a completion signal from the second device in response to a request command from a first device to a second device between devices, the first device transmits a command control main table and a command. A controller table is provided, and when the request command is output to the second device, the address of a routine to be activated when the completion signal corresponding to the request command is returned is stored in the command controller table, and a communication control unit that queues the command controller table in the command control main table in order to output the request command to the second device, and each time the completion signal is received from the second device; Then, the command controller table is searched from the beginning using the command included in the completion signal from the command control main table, the command controller table corresponding to the command is dequeued, and the dequeued command controller table is stored in the command controller table. 1. A high-speed completion notification system, comprising a completion reception means for transferring control to a certain routine address and releasing the command controller table when control returns from the routine.