JPH087666B2 - Spool print control method - Google Patents

Description

DETAILED DESCRIPTION [Overview] Regarding a spool print control method for printing using a spool print function of a system, a stacker is provided in an application and a print request is registered in the stacker when the system print queue is full. The stacker provided in the application that is registered when the print queue of the system spool print function is full, with the aim of continuing processing and improving the processing efficiency of the application.
When a print request is registered in this stacker, a transfer process for registering the print request extracted from the stacker in the print queue when there is space in the print queue is provided, and the application waits for the print request. When there is no space in the queue, register the print request in the above stacker and continue processing,
When a print request is registered in the stacker in the transfer process, when there is a space in the print queue, this is taken out, registered in the print queue, and the print request is made.

[Industrial application field]

The present invention relates to a spool print control method for printing using a spool print function of a system.

[Problems to be Solved by Conventional Techniques and Inventions]

Conventionally, when an application program (hereinafter referred to as an application) requests the spool print function of the system to print, it is registered and printed in the print queue held by the spool print function. At this time, if there is no space in the print queue (usually about 15 can be registered),
The application waited for a vacant space, and when it became available, requested printing. For this reason, there is a problem that the application is in a standby state until it becomes available, other processing cannot be executed, and processing efficiency is reduced.

It is an object of the present invention to provide a stacker for an application, register a print request in the stacker when the print queue of the system is full, and continue the processing to improve the processing efficiency of the application.

[Means for solving the problem]

 Means for solving the problems will be described with reference to FIG.

In FIG. 1, the spool print function 1 is a function of the system, and is a function of taking out a print request registered in the print queue 2 and printing it.

 The print queue 2 is for registering print requests.

The stacker 3 is provided in the application that registers a print request when the print queue 2 is full.

In the transfer process 5, when a print request is registered in the stacker 3, the print request taken out from the stacker 3 when the print queue 2 becomes vacant is transferred to the print queue 2
This is the process of registering with.

[Action]

According to the present invention, as shown in FIG. 1, a stacker 3 is provided in an application, and when the application requests printing, there is no space in the print queue 2 of the spool print function 1 of the system. When the transfer process 5 finds that a print request is registered in the stacker 3, the process is registered and the process is registered in the print queue 2 in which a vacancy has occurred, and the print request is made. .

Therefore, the application can register the print request in the stacker 3 and continue the processing when there is no space in the print queue 2 of the system, and the processing efficiency of the application can be improved.

〔Example〕

Next, the configuration and operation of one embodiment of the present invention will be sequentially described in detail with reference to FIGS. 1 to 3.

In FIG. 1 (a), the spool print function 1 is a function that is stored and operated in the system area (SG1, segment 1), and is a function that takes out the print request registered in the print queue 2 and prints it. is there.

The print queue 2 is for registering print requests from applications, and is a queue that can normally register about 15 print requests.

The stacker 3 is provided in the application for registering a print request when the print queue 2 has no space, and is a stacker for temporarily registering when the print queue 2 has space. is there.

The registration process 4 is to register the print request in the stacker 3 provided in the application when the print queue 2 is full (see FIG. 2).

 FIG. 1B shows an example of a stacker.

In FIG. 1B, the stack pointer 3-1 is
It is a pointer that points to the start address of an empty area in the stack area. The stack area is composed of n pieces, and the print request from the application is registered from the upper side described as registered to the lower side. And
When the print queue 2 becomes available, a registered print request with a high registration order is taken out, registered in the print queue 2, and deleted.

Next, the operation of the configuration shown in FIG. 1 will be described with reference to FIGS. 2 and 3.

FIG. 2 shows a registration processing flowchart according to the present invention.

In FIG. 2, the shift process is called. This is to call the transfer process shown in FIG. 3 prior to performing the registration process.

 Attempts to register a new process in print queue 2.

Determines whether registration to the print queue 2 has been completed. If YES, end (END). If NO, execute.

Attempts to register a process that could not be registered in the registration waiting stacker (stacker 3 in FIG. 1).

Determines whether or not registration to the registration waiting stacker has been completed. If YES, end (END). If NO (when the stacker waiting for registration is full), press
WAIT (time waiting state), and after the lapse of a predetermined time, the subsequent processing is executed.

By the above processing, the spool print function 1 of the system
When there is an empty space in the print queue 2, the print request from the application is registered, when there is no space, it is registered in the stacker 3 provided in the application, and when this stacker 3 also has no space, the application waits. By entering the state and repeating again after a lapse of a predetermined time, even if there is no space in the print queue 2, the print request can be registered in the stacker 3 and the application can continue the process.

FIG. 3 shows a migration processing flowchart according to the present invention. This process is activated periodically or as shown in FIG.

In FIG. 3, it is determined whether or not there is a registration waiting process in the registration waiting stacker (stacker 3 in FIG. 1). YES
In the case of, the process registered at the top of the registration waiting stacker is tried to be registered in the print queue 2. If NO, end (END).

Determines whether registration to the print queue has been successful. If YES, delete the registered process from the registered stacker. Then, the subsequent steps are repeatedly executed. If NO, then print queue 2 is full,
End once (END).

By the above process, when the print request is registered in the stacker 3 periodically or in the transition process 5 started in FIG. 2, the application is extracted by registering the print request in the empty print queue 2. The print request registered in the stacker 3 can be registered in the print queue 2 to make a print request.

Although the registration processing 4 and the migration processing 5 are both provided in the application in FIG. 1 (a), they may be provided as a routine (library) in the system area in advance and the processing request may be made by calling them.

[Effects of the Invention] As described above, according to the present invention, when an application has no space in the print queue 2 of the system, a print request is registered in the stacker 3 and the processing is continued, and the migration processing 5 prints. When the queue 2 becomes empty, it is taken out from the stacker 3, registered in the print queue 2 and requested to print. Therefore, there is no space in the print queue 2 of the spool print function of the system. However, the application can register the print request in the stacker 3 provided in the application and continue the processing, and the processing efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an embodiment of the present invention, FIG. 2 is a registration processing flowchart according to the present invention, and FIG. 3 is a migration processing flowchart according to the present invention. In the figure, 1 is a spool print function, 2 is a print queue, 3 is a stacker, 4 is a registration process, and 5 is a transfer process.

Claims (1)

[Claims] 1. A print control method for an application program in a system having a print queue for spool printing, wherein when a print queue is empty, a print request is registered in the print queue. When there is no empty print queue, the print request is registered in the stacker in the application program, and when the print queue becomes empty, the registered print request is taken out from the stacker. A spool print control method characterized by registering in the print queue.