CN100435084C - Resource management system, management method, printer, network card for printer - Google Patents

Abstract

Provided is a resource management system suitable to reduce the probability of unstable operation of software and to suppress increase in usage of resources. A network printer 100 limits the amount of resources to be used by the whole JAVA (registered trademark) software. Resource limitation information 400 is acquired for each independent function module 130 which constitutes a resource management object, based on the acquired resource limitation information 400, the memory quantity to be used by the independent function module 130, the memory quantity to be used for execution of the independent function module 130 by a shared function module 120 and the number of categories to be started are limited.

Description

Resource management system, management method, printer, network card for printer

technical field

The present invention relates to a system for managing resources, a printer, a network card for a printer, a resource management program, and a resource management method, and particularly relates to a resource management suitable for reducing the possibility of software operations becoming unstable while suppressing an increase in resource usage A system, a printer, a network card for the printer, a resource management program and a resource management method.

Background technique

Conventionally, as technologies for managing resources such as hardware, for example, a resource management system described in Patent Document 1 and an image forming apparatus described in Patent Document 2 are known.

The invention described in Patent Document 1 includes: a restriction setting unit that sets an operable range for resources used when software is executed by an information device; action within the range. The operating range verification unit compares the set operable range with the requested resource amount when there is a resource utilization request from the software, and stops execution of the software when the operable range is exceeded.

In the invention described in Patent Document 2, an image forming apparatus having a first execution environment and a second execution environment includes a resource management unit that manages resources such as memory used by the second execution environment. The resource management unit limits the resources available to the second execution environment.

Patent Document 1: JP-A-2004-94782

Patent Document 2: JP-A-2003-330732

However, the execution environment of the JAVA (registered trademark) application program is composed of an application program called JVM (Java (registered trademark) Virtual Machine) executed on the OS (Operating System), and multiple JAVA (registered trademark) virtual machines are executed on the JVM. Trademark) classification constituted by JAVA (registered trademark) classification settings, etc. 3 execution environment configuration.

FIG. 18 is a diagram for explaining an execution environment of a JAVA (registered trademark) application.

If the invention described in Patent Documents 1 and 2 is applied to such an environment, as shown in FIG. 18( a ), the resource amount used by JVM among OS resources can be limited.

On the JVM, a plurality of JAVA (registered trademark) class settings are sometimes executed in parallel. In this case, even if the amount of resources used by the JVM can be limited, the JAVA (registered trademark) classification setting on the JVM can freely use resources within its limited range. Therefore, if a certain JAVA (registered trademark) category setting uses resources near the upper limit value that can be used by the JVM, other JAVA (registered trademark) category settings cannot be executed and the operation becomes unstable.

Since the JAVA (registered trademark) class setting requires a JVM for its execution, it cannot be directly executed on the OS. Therefore, if the invention described in Patent Documents 1 and 2 is applied to limit the amount of resources used by each JAVA (registered trademark) category setting, as shown in FIG. 18(b), only one JAVA (registered trademark) category setting can be executed separately. JVM. However, in such an execution method, as JAVA (registered trademark) classification settings increase, JVMs also increase, and resource usage increases as a whole, which is unrealistic.

In addition, when the amount of resources used by the JVM for execution of the JAVA (registered trademark) category setting is large in addition to the amount of resources used by the JAVA (registered trademark) category setting itself, the same problem as described above occurs. For example, in accordance with the JAVA (registered trademark) classification setting that simultaneously generates a plurality of instances, the JVM uses a large amount of resources to generate instances.

Contents of the invention

Therefore, the present invention has been made focusing on such unsolved problems in the prior art, and an object of the present invention is to provide a resource management system suitable for reducing the possibility of software operation becoming unstable and suppressing an increase in resource usage. , printer, network card for printer, resource management program and resource management method.

[Mode 1] In order to achieve the above object, the resource management system of Mode 1 manages resources used by a first functional module and a plurality of second functional modules, and the first functional module is required for execution of the second functional module. , characterized by having:

a first resource limiting unit that limits the amount of resources used by the first functional module and the plurality of second functional modules as a whole; a resource limitation information acquisition unit that acquires resource limitation information indicating resource limitation conditions; and a second A resource limiting unit that limits the amount of resources used by at least one of the plurality of second functional modules based on the resource limitation information acquired by the resource limitation information acquisition unit.

According to such a configuration, the amount of resources used by the first functional module and the plurality of second functional modules as a whole is restricted by the first resource limiting means. In addition, resource restriction information is obtained by using the resource restriction information obtaining part, and the amount of resources used by at least one of the plurality of second functional modules is restricted by the second resource restriction part based on the obtained resource restriction information

As a result, since the amount of resources can be restricted by the first functional module and the plurality of second functional modules as a whole, the amount of resources can also be restricted by the unit of the second functional module, so compared with the past, it is possible to reduce the operation of the software. The effect of the possibility of becoming unstable due to insufficient resources, etc. In addition, since the amount of resources is limited in units of second functional modules, it is not necessary to execute a plurality of first functional modules, so that an increase in the amount of resource usage can be suppressed compared to conventional ones.

Here, the so-called resources refer to resources that can be used by software, and are not limited to hardware resources, but also include resources such as software resources. In addition, it also refers to the resources provided by the execution environment required to operate the functional modules. The same applies to the resource management system of mode 3, printers of modes 6 and 8, network cards for printers of modes 11 and 13, resource management programs of modes 16 and 18, and resource management methods of modes 21, 22, 24 and 25.

In addition, the amount of resources includes, for example, the amount of memory used by the functional modules and the number of activatable functional modules. In addition, for example, the amount of resources (the amount of memory, the number of functional modules) secured by the application using the functional modules is included. The same applies to the resource management system of mode 3, printers of modes 6 and 8, network cards for printers of modes 11 and 13, resource management programs of modes 16 and 18, and resource management methods of modes 21, 22, 24 and 25.

In addition, as the restriction condition of resources, for example, an upper limit value of resources may be set. The same applies to the resource management system of mode 3, printers of modes 6 and 8, network cards for printers of modes 11 and 13, resource management programs of modes 16 and 18, and resource management methods of modes 21, 22, 24 and 25.

In addition, secured resources are included, for example, as used resources. The same applies to the resource management system of mode 3, printers of modes 6 and 8, network cards for printers of modes 11 and 13, resource management programs of modes 16 and 18, and resource management methods of modes 21, 22, 24 and 25.

In addition, as management resources, for example, limit resources are included. In addition, limiting resources includes, for example, not performing resource securing exceeding an absolute amount so as not to exceed a certain absolute amount. Specifically, it includes the following series of processes, that is, capturing resource usage actions, measuring the amount of resources being used, accumulating the amount of resources, comparing the resource limit value with the accumulated value, and judging that the resource usage is allowed, and not proceeding if it is not allowed. Resource assurance, where allowed, resource assurance. The same applies to the resource management system of mode 3, printers of modes 6 and 8, network cards for printers of modes 11 and 13, resource management programs of modes 16 and 18, and resource management methods of modes 21, 22, 24 and 25.

In addition, the resource restriction information obtaining means may have any configuration as long as it obtains the resource restriction information. For example, the resource restriction information may be input from an input device or the like, the resource restriction information may be obtained or received from an external device, etc., or the resource restriction information may be obtained from a storage device or a storage medium. The resource limitation information can be extracted from data such as software by reading out the resource limitation information. Therefore, acquisition includes at least input, acquisition, reception, reading, and extraction. Next, the same applies to the resource management system of mode 3, the printers of modes 6 and 8, and the network cards for printers of modes 11 and 13.

In addition, acquisition of the resource limit information includes, for example, acquisition of the absolute value of the resource limit from a configuration file. The same applies to the resource management system of mode 3, printers of modes 6 and 8, network cards for printers of modes 11 and 13, resource management programs of modes 16 and 18, and resource management methods of modes 21, 22, 24 and 25.

In addition, the so-called functional module refers to a program required to realize a function. The same applies to the resource management system of mode 3, printers of modes 6 and 8, network cards for printers of modes 11 and 13, resource management programs of modes 16 and 18, and resource management methods of modes 21, 22, 24 and 25.

In addition, the need for the first function module to execute the second function module means, for example, to call the first function module during execution of the second function module, or to use the first function module during execution of the second function module. The same applies to the resource management system of mode 3, printers of modes 6 and 8, network cards for printers of modes 11 and 13, resource management programs of modes 16 and 18, and resource management methods of modes 21, 22, 24 and 25.

In addition, this system may be realized as a single device, terminal, etc., or as a network system in which a plurality of devices, terminals, etc. are connected in a communicable manner. In the latter case, each component may belong to any one of a plurality of devices as long as they are communicably connected. Next, the resource management system of the mode 3 is also the same.

[Form 2] Furthermore, the resource management system of form 2 is characterized in that:

The amount of resources restricted by the second resource limiting means is the amount of resources used by the second functional module and the amount of resources used by the first functional module in execution of the second functional module.

According to such a configuration, the amount of resources used by the second function module and the amount of resources used by the first function module for execution of the second function module are restricted by the second resource limiting means.

As a result, since the amount of resources used by the first functional module can be limited in units of the second functional module, the possibility of software operation becoming unstable due to resource shortage or the like can be further reduced.

[Mode 3] Furthermore, the resource management system of Mode 3 manages resources used by a first functional module and a plurality of second functional modules, and the first functional module is required for execution of the second functional module, and is characterized in that In that, have:

a resource restriction information obtaining unit that obtains resource restriction information indicating a resource restriction condition; and a resource restriction unit that restricts the first functional module from operating in the first function module based on the resource restriction information obtained by the resource restriction information obtaining unit. 2 The amount of resources used in the execution of the function module.

According to this configuration, the resource restriction information obtaining means acquires the resource restriction information, and the resource restriction means restricts the amount of resources used by the first functional module for execution of the second functional module based on the obtained resource restriction information.

As a result, since the amount of resources used by the first functional module can be limited in units of the second functional module, the possibility of software operation becoming unstable due to lack of resources or the like can be reduced compared to conventional ones. In addition, since the amount of resources is limited in units of second functional modules, it is not necessary to execute a plurality of first functional modules, so that an increase in resource usage can be suppressed compared to conventional ones.

[Form 4] Furthermore, the resource management system of Mode 4 is characterized in that:

The amount of resources restricted by the resource limiting means is the amount of resources used by the second functional module and the amount of resources used by the first functional module in execution of the second functional module.

According to such a configuration, the amount of resources used by the second functional module and the amount of resources used by the first functional module to execute the second functional module are restricted by the resource limiting means.

[Aspect 5] Furthermore, the resource management system of Aspect 5 is characterized in that:

The second functional module is composed of one or more JAVA (registered trademark) categories,

The first functional module is an execution control application that controls execution of the JAVA (registered trademark) class.

According to this configuration, the amount of resources used by the JAVA (registered trademark) class or the amount of resources used by the execution control application to execute the JAVA (registered trademark) class is limited.

This provides an effect of reducing the possibility of software operation becoming unstable due to lack of resources or the like in the execution environment of the JAVA (registered trademark) application program.

Here, the JAVA (registered trademark) class refers to a program that summarizes data in the JAVA (registered trademark) language and methods (functions) as its operation steps. In addition, JAVA (registered trademark) is an execution environment using a virtual machine, and is applicable to a classification called a virtual machine operating on an OS. The same applies to the printer of the tenth form, the network card for the printer of the fifteenth form, the resource management program of the twenty-first form, and the resource management method of the twenty-seventh form.

In addition, the so-called application program refers to a program that provides a specific function and is composed of a plurality of JAVA (registered trademark) categories. The same applies to the printer of the tenth form, the network card for the printer of the fifteenth form, the resource management program of the twenty-first form, and the resource management method of the twenty-seventh form.

[Mode 6] On the other hand, in order to achieve the above object, the printer according to Mode 6 manages resources used by a first function module and a plurality of second function modules, and the first function is required for execution of the second function module. The module is characterized in that it has:

a first resource limiting unit that limits the amount of resources used by the first functional module and the plurality of second functional modules as a whole; a resource limitation information acquisition unit that acquires resource limitation information indicating resource limitation conditions; and a second A resource limiting unit that limits the amount of resources used by at least one of the plurality of second functional modules based on the resource limitation information acquired by the resource limitation information acquisition unit.

According to this configuration, the same operations and effects as those of the resource management system of the first embodiment are obtained.

[Form 7] Furthermore, the printer of Form 7 is characterized in that:

The amount of resources restricted by the second resource limiting means is the amount of resources used by the second functional module and the amount of resources used by the first functional module in execution of the second functional module.

According to this configuration, the same operations and effects as those of the resource management system of Embodiment 2 are obtained.

[Aspect 8] Furthermore, the printer according to Aspect 8 manages resources used by a first functional module and a plurality of second functional modules, and the first functional module is required for execution of the second functional module, wherein: have:

a resource restriction information obtaining unit that obtains resource restriction information indicating a resource restriction condition; and a resource restriction unit that restricts the first functional module from operating in the first function module based on the resource restriction information obtained by the resource restriction information obtaining unit. 2 The amount of resources used in the execution of the function module.

According to this configuration, the same operations and effects as those of the resource management system of the third embodiment are obtained.

[Form 9] Furthermore, the printer of Form 9 is characterized in that:

The amount of resources restricted by the resource limiting means is the amount of resources used by the second functional module and the amount of resources used by the first functional module in execution of the second functional module.

According to this configuration, the same operations and effects as those of the resource management system of the embodiment 4 are obtained.

[Aspect 10] Furthermore, the printer according to Aspect 10 is characterized in that:

The second functional module is composed of one or more JAVA (registered trademark) categories,

The first functional module is an execution control application that controls execution of the JAVA (registered trademark) class.

According to this configuration, the same operations and effects as those of the resource management system of Embodiment 5 are obtained.

[Mode 11] On the other hand, in order to achieve the above object, the printer network card of Mode 11 manages the resources used by the first functional module and a plurality of second functional modules, and the above-mentioned The first functional module is characterized in that it has:

a first resource limiting unit that limits the amount of resources used by the first functional module and the plurality of second functional modules as a whole; a resource limitation information acquisition unit that acquires resource limitation information indicating resource limitation conditions; and a second A resource limiting unit that limits the amount of resources used by at least one of the plurality of second functional modules based on the resource limitation information acquired by the resource limitation information acquisition unit.

According to this configuration, if the network card for the printer is installed in the printer, the same operations and effects as those of the resource management system of the first mode can be obtained.

[Mode 12] Furthermore, the network card for printers of mode 12 is characterized in that:

The amount of resources restricted by the second resource limiting means is the amount of resources used by the second functional module and the amount of resources used by the first functional module in execution of the second functional module.

According to this configuration, if the network card for the printer is installed in the printer, the same operations and effects as those of the resource management system of Embodiment 2 can be obtained.

[Mode 13] Furthermore, the network card for a printer according to Mode 13 manages resources used by a first functional module and a plurality of second functional modules, and the first functional module is required for execution of the second functional module, and is characterized in that In that, have:

a resource restriction information obtaining unit that obtains resource restriction information indicating a resource restriction condition; and a resource restriction unit that restricts the first functional module from operating in the first function module based on the resource restriction information obtained by the resource restriction information obtaining unit. 2 The amount of resources used in the execution of the function module.

According to this configuration, if the network card for the printer is installed in the printer, the same operations and effects as those of the resource management system of the third embodiment can be obtained.

[Form 14] Furthermore, the network card for a printer of the form 14 is characterized in that:

The amount of resources restricted by the resource limiting means is the amount of resources used by the second functional module and the amount of resources used by the first functional module in execution of the second functional module.

According to this configuration, if the network card for the printer is installed in the printer, the same operations and effects as those of the resource management system of Embodiment 4 can be obtained.

[Form 15] Furthermore, the network card for a printer of the form 15 is characterized in that:

The second functional module is composed of one or more JAVA (registered trademark) categories,

The first functional module is an execution control application that controls execution of the JAVA (registered trademark) class.

According to this configuration, if the network card for the printer is installed in the printer, the same operations and effects as those of the resource management system of Embodiment 5 can be obtained.

[Form 16] On the other hand, in order to achieve the above object, the resource management program of Form 16 manages resources used by the first functional module and a plurality of second functional modules, and the above-described The first functional module is characterized in that it includes a program for causing a computer to execute processing consisting of the following steps:

a first resource limitation step of limiting the amount of resources used by the first functional module and the plurality of second functional modules as a whole; a resource limitation information acquisition step of acquiring resource limitation information indicating resource limitation conditions; and a second A resource limiting step of limiting the amount of resources used by at least one of the second functional modules based on the resource limitation information acquired in the resource limitation information acquisition step.

According to this configuration, when the program is read by the computer, and the computer executes processing based on the read program, the same operations and effects as those of the resource management system of Embodiment 1 are obtained.

Here, the resource restriction information obtaining step may be in any form as long as the resource restriction information is obtained. For example, the resource restriction information may be input from an input device, etc., the resource restriction information may be obtained or received from an external device, etc., or the resource restriction information may be obtained from a storage device or The resource limit information can be read out from the storage medium, etc., and the resource upper limit information can be extracted from data such as software. Therefore, acquisition includes at least input, acquisition, reception, reading, and extraction. The same applies to the resource management program of Embodiment 18 and the resource management methods of Embodiments 21, 22, 24, and 25.

[Form 17] Furthermore, the resource management program of the form 17 is characterized in that:

The amount of resources limited by the second resource limiting step is the amount of resources used by the second function module and the amount of resources used by the first function module in execution of the second function module.

According to this configuration, when the program is read by the computer, and the computer executes processing based on the read program, the same operations and effects as those of the resource management system of the second embodiment are obtained.

[Mode 18] Furthermore, the resource management program according to the mode 18 manages resources used by a first functional module and a plurality of second functional modules, and the first functional module is required for execution of the second functional module, and is characterized in that Contains a program that causes a computer to execute processing consisting of the following steps:

a resource restriction information obtaining step of obtaining resource restriction information indicating a resource restriction condition; and a resource restriction step of restricting the first functional module from operating in the first functional module based on the resource restriction information obtained in the resource restriction information obtaining step. 2 The amount of resources used in the execution of the function module.

According to this configuration, when the program is read by the computer, and the computer executes processing based on the read program, the same operations and effects as those of the resource management system of the third embodiment can be obtained.

[Aspect 19] Furthermore, the resource management program of the aspect 19 is characterized in that:

The amount of resources limited by the resource limiting step is the amount of resources used by the second function module and the amount of resources used by the first function module in execution of the second function module.

According to this configuration, when the program is read by the computer, and the computer executes processing based on the read program, the same operations and effects as those of the resource management system of Embodiment 4 are obtained.

[Mode 20] Furthermore, the resource management program according to Mode 20 is characterized in that:

The second functional module is composed of one or more JAVA (registered trademark) categories,

The first functional module is an execution control application that controls execution of the JAVA (registered trademark) class.

According to this configuration, when the program is read by the computer, and the computer executes processing based on the read program, the same operations and effects as those of the resource management system of the fifth embodiment can be obtained.

[Mode 21] On the other hand, in order to achieve the above object, the resource management method of Mode 21 manages the resources used by the first functional module and a plurality of second functional modules, and the above-mentioned The first functional module is characterized in that: comprising

a first resource limitation step of limiting the amount of resources used by the first functional module and the plurality of second functional modules as a whole; a resource limitation information acquisition step of acquiring resource limitation information indicating resource limitation conditions; and a second A resource limiting step of limiting the amount of resources used by at least one of the plurality of second functional modules based on the resource limitation information acquired in the resource limitation information acquisition step.

Thereby, the same effect as that of the resource management system of Embodiment 1 is obtained.

[Form 22] Furthermore, the resource management method of Form 22 manages resources used by a first functional module and a plurality of second functional modules, and the first functional module is required for execution of the second functional module, wherein :Include

In the first resource limiting step, the amount of resources used by the first functional module and the plurality of second functional modules as a whole by the first resource limiting component;

A resource limit information obtaining step, wherein the upper limit value obtaining means obtains resource limit information indicating a resource limit condition; and

In the second resource limiting step, the second resource limiting means limits the amount of resources used by at least one of the plurality of second functional modules based on the resource limiting information acquired in the resource limiting information acquiring step.

Thereby, the same effect as that of the resource management system of Embodiment 1 is obtained.

[Form 23] Furthermore, the resource management method of Form 23 is characterized by:

The amount of resources limited by the second resource limiting step is the amount of resources used by the second function module and the amount of resources used by the first function module in execution of the second function module.

Thereby, the same effect as the resource management system of the form 2 is acquired.

[Form 24] Furthermore, the resource management method of Form 24 manages resources used by a first functional module and a plurality of second functional modules, and the first functional module is required for execution of the second functional module, wherein :Include

a resource restriction information obtaining step of obtaining resource restriction information indicating a resource restriction condition; and a resource restriction step of restricting the first functional module from operating in the first functional module based on the resource restriction information obtained in the resource restriction information obtaining step. 2 The amount of resources used in the execution of the function module.

Thereby, the same effect as that of the resource management system of Embodiment 3 is obtained.

[Form 25] Furthermore, the resource management method of form 25 manages resources used by a first functional module and a plurality of second functional modules, and the first functional module is required for the execution of the second functional module, and is characterized in that in: contains

A resource limit information obtaining step, wherein the upper limit value obtaining means obtains resource limit information indicating a resource limit condition; and

In the resource limiting step, the second resource limiting means limits the amount of resources used by the first function module for execution of the second function module based on the resource limitation information acquired in the resource limitation information acquisition step.

Thereby, the same effect as that of the resource management system of Embodiment 3 is obtained.

[Form 26] Furthermore, the resource management method of Form 26 is characterized in that:

The amount of resources limited by the resource limiting step is the amount of resources used by the second function module and the amount of resources used by the first function module in execution of the second function module.

Thereby, the same effect as that of the resource management system of Embodiment 4 is obtained.

[Form 27] Furthermore, the resource management method of Form 27 is characterized in that:

The second functional module is composed of one or more JAVA (registered trademark) categories,

The first functional module is an execution control application that controls execution of the JAVA (registered trademark) class.

Thereby, the same effect as that of the resource management system of Embodiment 5 is obtained.

Description of drawings

FIG. 1 is a diagram showing the configuration of JAVA (registered trademark) software.

FIG. 2 is a functional block diagram showing an outline of functions of the network printer 100 .

FIG. 3 is a block diagram showing the hardware configuration of the network printer 100 .

FIG. 4 is a diagram showing a data structure of resource limitation information 400 .

FIG. 5 is a diagram showing the data structure of the module information 420 .

FIG. 6 is a diagram showing the data structure of the execution environment information registration table 440 .

FIG. 7 is a diagram showing the data structure of the resource management table 460 .

FIG. 8 is a diagram showing the data structure of the event listener table 480 .

FIG. 9 is a flowchart showing individual function module control processing.

FIG. 10 is a flowchart showing execution availability determination processing.

Fig. 11 is a flowchart showing module activation processing.

Fig. 12 is a flowchart showing event listener registration processing.

Fig. 13 is a flowchart showing classification reading processing.

Fig. 14 is a flowchart showing event listener control processing.

Fig. 15 is a flowchart showing event listener execution processing.

Fig. 16 is a flowchart showing instance deletion processing.

Fig. 17 is a timing chart showing the parallel execution of individual function modules b and c constituting resource management objects.

FIG. 18 is a diagram for explaining an execution environment of a JAVA (registered trademark) application.

In the figure: 100-network printer, 110-OS, 120-common function module, 130-individual function module, 10, 16-resource measurement department, 12, 20-resource limitation department, 14-individual function module management department, 18- Upper limit acquisition part, 30-CPU, 32-ROM, 34-RAM, 38-I/F, 40-operation panel, 42-storage device, 44-printer engine, 400-resource limitation information, 420-module information, 440-Enforcement Environment Information Login Form, 460-Resource Management Form, 480-Event Listener Form

Detailed ways

Embodiment 1

Next, Embodiment 1 of the present invention will be described with reference to the drawings. 1 to 17 are diagrams showing Embodiment 1 of a resource management system, a printer, a printer network card, a resource management program, and a resource management method according to the present invention.

In this embodiment, as shown in FIG. 2, in the case of managing the resources used in the JAVA (registered trademark) application program execution environment and the JAVA (registered trademark) classification settings, the resource management system, printer, and printer network card of the present invention are applicable. And resource management procedures and resource management methods.

First, an outline of the functions of the network printer 100 to which the present invention is applied will be described.

FIG. 1 is a diagram showing the configuration of JAVA (registered trademark) software.

In the execution environment of the JAVA (registered trademark) application program, the common function module composed of the JAVA (registered trademark) category and the JVM that controls the execution of the JAVA (registered trademark) category setting is executed on the OS, and is executed on the common function module as JAVA (registered trademark) separate function modules for classification settings. Here, the JAVA (registered trademark) software is composed of common function modules and individual function modules.

As shown in Figure 1, the common function module can execute multiple individual function modules. In the example of FIG. 1 , the case where two individual function modules b, c are executed on a common function module a is shown. Here, when the amount of resources used by the individual function module b is set to x1, the amount of resources used by the common function module a in the execution of the individual function module b is set to x2, and the upper limit of resources that can be used by the individual function module b is Xmax In this case, in this embodiment, the amount of resources is limited so that x1+x2≦Xmax.

FIG. 2 is a functional block diagram showing an outline of functions of the network printer 100 .

As shown in FIG. 2 , the network printer 100 has an OS 110 , a common function module 120 and a plurality of individual function modules 130 .

The OS 110 includes a resource measuring unit 10 that measures the amount of resources used by JAVA (registered trademark) software, and a resource limiting unit 12 that limits the amount of resources used by the entire JAVA (registered trademark) software.

The resource limiting unit 12 limits resources used by the JAVA (registered trademark) software so that the amount of resources measured by the resource measuring unit 10 is less than a predetermined upper limit allocated to the JAVA (registered trademark) software.

The common function module 120 has an individual function module management unit 14 that manages the execution of the individual function module 130, a resource measurement unit 16 that measures the amount of resources used by the individual function module management unit 14 and the individual function module 130, and obtains the resources that the individual function module 130 can use. The upper limit acquisition unit 18 of the resource upper limit value, and the resource limiting unit 20 that limits the amount of resources used by the individual function module management unit 14 and the individual function module 130 .

The resource measurement unit 16 measures, for each individual function module 130 , the amount of resources used by the individual function module 130 and the amount of resources used by the individual function module management unit 14 to execute the individual function module 130 .

The resource limiting unit 20 limits the amount of resources used by the individual function module 130 and the amount of resources used by the individual function module management unit 14 in the execution of the individual function module 130 so that the amount of resources measured by the resource measuring unit 16 is less than the upper limit The upper limit value obtained by the value obtaining unit 18 .

Next, the configuration of the network printer 100 will be described in detail.

FIG. 3 is a block diagram showing the hardware configuration of the network printer 100 .

As shown in FIG. 3, the network printer 100 consists of a CPU 30 that controls calculations and the entire system according to a control program, a ROM 32 that stores the control program of the CPU 30 in a predetermined area, and stores data read from the ROM 32 or the like during the calculation of the CPU 30. The RAM 34 for the required calculation results and the I/F 38 for inputting and outputting data to and from an external device are constituted, and these components are connected to each other by a bus 39 serving as a signal line for transferring data so that data can be exchanged.

As an external device, on the I/F38, an operation panel 40 composed of a touch screen that can input and display data as a human-machine interface is connected, a storage device 42 that stores data or tables as files, and is driven by a print head and a head. A printer engine 44 constituted by a mechanism necessary for printing, such as a department, and a signal line for connecting to the network 199 .

Next, the data structure of the storage device 42 will be described in detail.

The storage device 42 stores a common function module 120 and a plurality of individual function modules 130 .

The independent function module 130 is configured including resource limit information storing a resource upper limit value.

FIG. 4 is a data structure diagram showing resource limitation information 400 .

Resource limit information 400, as shown in FIG. 4 , includes a field 402 for storing the upper limit value of the memory (RAM 34 ) that can be used by the individual function module 130 and the common function module 120 during the execution of the individual function module 130, and a field 402 for storing the individual function module 130 and the common function module 120 in the execution of the individual function module 130 can activate the category number field 404 .

The individual function modules 130 also contain module information on the individual function modules 130 .

FIG. 5 is a diagram showing the data structure of the module information 420 .

The module information 420, as shown in FIG. 5, includes a field 422 storing whether the amount of resources used by the individual function module 130 is a restricted object (hereinafter referred to as a resource management object), and storing the model of the network printer 100 that the individual function module 130 can execute. The field 424 and the field 426 for storing electronic signature information.

In the example of FIG. 5 , 'valid' is stored in field 422 . This means that the individual function modules 130 are managed as resource management objects. In addition, 'TypeA' and 'X Company' are stored in the field 424 and the field 426, respectively. This means that the executable model of the individual function module 130 is 'Type A', and the electronic signature of Company X is accepted.

The storage device 42 also stores an execution environment information registration table for registering execution environment information indicating the execution environment of the common function module 120 .

FIG. 6 is a diagram showing the data structure of the execution environment information registration table 440 .

Execution environment information registration form 440 is as shown in Figure 6, includes the field 442 of the upper limit value of the number of registered individual function modules 130 that can be activated, the field 444 of the name of the individual function module 130 that should be executed, and the individual function module 130 that should be deleted. The field 446 for the name of the function module 130, the field 448 for registering the model of the own network printer 100, and the field 450 for registering the corresponding electronic signature information.

In the example of FIG. 6, '5', 'individual function modules b, d', and 'individual function module c' are registered in field 442, field 444, and field 446, respectively. This means that up to five individual function modules 130 can be started, and when the common function module 120 is started, the individual function modules b and d are executed, and the individual function module c should be deleted. In addition, 'TypeA' and 'X Company' are registered in the fields 448 and 450, respectively. This means that your own model is 'TypeA', which can execute the individual function module 130 including X company's electronic signature information.

In the storage device 42, a resource management table for managing the amount of resources used by the individual function module 130 is also stored for each individual function module 130 constituting the object of resource management. The resource management table is generated when the individual functional module 130 is a resource management target, accompanying its activation.

FIG. 7 is a diagram showing the data structure of the resource management table 460 .

In the resource management table 460, as shown in FIG. 7, one record is registered for each resource type. Each record is registered including a field 462 for registering a resource name, a field 464 for registering an upper limit value of resources that can be used by the individual function module 130 , and a field 466 for registering the amount of resources that the individual function module 130 is using.

In the example of FIG. 7, in the first record, 'storage' is registered, '1000000' is registered as the resource name, '512345' is registered as the current value as the upper limit value. This means that the upper limit value of the memory that can be used by the individual function module 130 is 1000000 [byte], and the current memory of 512345 [byte] is used. In addition, in the second record, 'number of categories' is registered, '100' is registered as the name of the resource, '20' is registered as the current value as the upper limit value, and '20' is registered as the current value. This means that the upper limit of the number of categories that can be activated by the individual function module 130 is 100, and currently 20 categories are activated.

The storage device 42 also stores an event listener table 480 , which registers event listeners for processing events received by the individual function modules 130 .

FIG. 8 is a diagram showing the data structure of the event listener table 480 .

In the event listener table 480 , as shown in FIG. 9 , a record is registered for each event listener registered by the individual function module 130 . Each record includes a field 482 to register the name of the event listener to register.

Return to Fig. 3, CPU30 is made up of micro-processing unit etc., makes the specified program that is stored in the predetermined area of ROM32 start, according to this program, respectively time-division executes the individual shown in the flow chart of Fig. 9, Fig. 03, Fig. 14 and Fig. 16 Function module control processing, category read processing, event listener control processing, and instance deletion processing are the processing of the common function module 120 .

First, the individual function module control processing will be described in detail with reference to FIG. 9 .

FIG. 9 is a flowchart showing individual function module control processing.

The individual function module control process is a process for controlling the deletion and execution of the individual function module 130, and when executed by the CPU 30, as shown in FIG. 9, first, it moves to step S100.

In step S100, the name of the individual function module 130 to be executed and the name of the individual function module 130 to be deleted are obtained from the execution environment information registration table 440, and the process moves to step S102 to determine whether there is an individual function module 130 to be deleted. , when it is determined that there is an individual function module 130 to be deleted (Yes), the process moves to step S104.

In step S104, delete the independent function module 130 from the storage device 42 according to the obtained name, and move to step S106, and determine whether the independent function module 130 is When it is determined that the individual functional module 130 is a resource management target (Yes), the process proceeds to step S108.

In step S108, delete the resource management table 460 corresponding to the individual function module 130 from the storage device 42, and move to step S110, subtract '1' from the variable value representing the number of modules currently being activated, and move to Go to step S102.

On the other hand, when it is determined in step S106 that the individual function module 130 is not a resource management target (No), the process proceeds to step S102.

On the other hand, in step S102, when it is determined that there is no individual function module 130 that should be deleted (No), it moves to step S112 to determine whether there is an individual function module 130 that should be executed. If the function module 130 (Yes), go to step S114.

In step S114, it is determined whether the variable value indicating the number of modules currently being activated is less than a predetermined upper limit, and if it is determined to be less than the predetermined upper limit (Yes), the process proceeds to step S116.

In step S116, the individual function module 130 is read from the storage device 42 based on the acquired name, and the process moves to step S118, where the executable judgment process for judging whether the read individual function module 130 is executable is executed, and the process moves to step S120.

In step S120, it is determined whether or not a return value indicating that the execution of the individual function module 130 is permitted is returned from the execution availability determination process, and if it is determined that a return value indicating that execution is permitted is returned (Yes), the process proceeds to step S122.

In step S122, based on the module information 420 contained in the individual function module 130, it is determined whether the individual function module 130 is a resource management object, and when it is determined that the individual function module 130 is a resource management object (Yes), the process proceeds to step S122. S124.

In step S124, the resource management table 460 corresponding to the individual function module 130 is generated, the upper limit value is obtained from the resource limit information 400 included in the individual function module 130, and the obtained upper limit value is registered in the generated resource management table 460. Table 460, and move to step S126, add '1' to the variable value indicating the number of modules currently being activated, and move to step S128.

In step S128, the address of the generated resource management table 460 is set as the reference pointer of the resource guaranteed object, and then moves to step S130, executes the module start process of starting the individual function module 130, moves to step S132, clears the resource Secure the reference pointer of the object, and move to step S112.

On the other hand, in step S122, when it is determined that the individual function module 130 is not a resource management target (NO), the process moves to step S134, the same module activation process as step S130 is executed, and the process moves to step S112.

On the other hand, when it is determined in step S120 that a return value indicating that execution of the individual function module 130 is not permitted is returned from the execution permission determination process (No), the process proceeds to step S112.

On the other hand, in step S114, when it is determined that the variable value indicating the number of modules currently being activated is greater than or equal to the predetermined upper limit (No), and in step S112, it is determined that there is no individual function module to be executed. At 130 (No), a series of processing is ended, and the original processing is restored.

Next, the execution availability determination process of step S118 will be described in detail with reference to FIG. 10 .

FIG. 10 is a flowchart showing execution availability determination processing.

If the execution permission determination process is performed in step S118, as shown in FIG. 10, it will first move to step S200.

In step S200, the model information is obtained from the module information 420 included in the individual function module 130, and then the process proceeds to step S202, where it is determined whether the obtained model information is consistent with the model information in the execution environment information registration table 440, When it is determined that the model information matches (Yes), the process proceeds to step S204.

In step S204, obtain the electronic signature information from the module information 420 contained in the individual function module 130, and move to step S206, based on the execution environment information registration table 440, determine whether the obtained electronic signature information can be corresponded, when it is determined that If it is compatible electronic signature information (Yes), go to step S208.

In step S208, based on the module information 420 included in the individual function module 130, it is determined whether the individual function module 130 is a resource management target, and if it is determined to be a resource management target (Yes), the process proceeds to step S210.

In step S210, the upper limit value is obtained from the resource limit information 400 included in the individual function module 130, and the process moves to step S212, where it is determined whether the upper limit value has been obtained successfully, and when it is determined that the upper limit value has been successfully obtained (Yes ), move to step S214.

In step S214, it is determined whether the obtained upper limit value is less than the entire memory remaining capacity available to the common function module 120, and if it is determined to be less than the entire memory remaining capacity (Yes), move to step S216, and return to indicate that the independent function module 130 is allowed. The return value of the execution ends a series of processing and returns to the original processing.

On the other hand, when it is determined in step S208 that the individual function module 130 is not a resource management target (No), the process proceeds to step S216.

On the other hand, when it is determined in step S214 that the obtained upper limit value is equal to or greater than the entire memory remaining capacity (No), in step S212, when it is determined that the acquisition of the upper limit value has failed (No), in step S206 , when it is determined that it is not the corresponding electronic signature information (No), and in step S202, when it is determined that the model information is inconsistent (No), all move to step S218, and return indicates that the execution of the independent function module 130 is not allowed. value, end a series of processing, and return to the original processing.

Next, the module activation processing in steps S130 and S134 will be described in detail with reference to FIG. 11 .

Fig. 11 is a flowchart showing module activation processing.

If the module activation process is executed in steps S130 and S134, as shown in FIG. 11 , the process first moves to step S300.

In step S300, output the classification reading instruction that should read classification from independent function module 130, and move to step S302, judge whether the reading of classification is successful, when judging that the reading of classification is successful (Yes), move to Go to step S304.

In step S304, it is determined whether the reference pointer of the resource securing object is set, and when it is determined that the reference pointer of the resource securing object is set (Yes), the process moves to step S306.

In step S306, the amount of memory required for executing the read classification is calculated, and the calculated memory amount is added to the used memory amount of the resource management table 460 (hereinafter referred to as the reference resource management table 460 ) indicated by the reference pointer of the resource securing object. and move to step S308 to determine whether the added total memory amount is less than the upper limit value of the reference resource management table 460, and if it is determined to be less than the upper limit value (Yes), move to step S310.

In step S310, an instance of the class that is read is generated on the memory, and the process moves to step S312, and the resource secured object reference information indicating the reference pointer value of the resource secured object is stored in the created instance, and the process moves to step S314.

In step S314, it is determined whether the generation of the instance is successful, and when it is determined that the generation of the instance is successful (Yes), it moves to step S316, and executes the classification function call process of calling the function of reading the classification, and moves to step S318, and executes The event listener registration process of registering the event listener of the individual function module 130 ends a series of processes and returns to the original process.

On the other hand, in step S308, when it is determined that the total memory amount is equal to or greater than the upper limit (No), the process moves to step S320, and the memory amount calculated in step S306 is subtracted from the used memory amount of the reference resource management table 460. , and move to step S322, notify an error, and move to step S314.

On the other hand, in step S304, when it is determined that the reference pointer of the resource securing object is not set (No), the process moves to step S324, and an instance of the loaded category is created on the memory, and the process moves to step S314.

On the other hand, when it is determined in step S314 that the generation of the instance has failed (No), and in step S302, when it has been determined that the reading of the classification has failed (No), the process proceeds to step S318.

Next, the event listener registration process in step S318 will be described in detail with reference to FIG. 12 .

Fig. 12 is a flowchart showing event listener registration processing.

If the event listener registration process is executed in step S318, as shown in FIG. 12, first, it will move to step S400.

In step S400, output a classification read instruction for reading event audience classification from the independent function module 130, and move to step S402, determine whether the reading of event audience classification is successful, when it is determined that the reading of event audience classification is successful (Yes), move to step S404.

In step S404, it is determined whether the reference pointer of the resource securing object is set, and when it is determined that the reference pointer of the resource securing object is set (Yes), the process proceeds to step S406.

In step S406, the amount of memory required for executing the read event audience classification is calculated, and the calculated memory amount is added to the used memory amount of the reference resource management table 460, and the process moves to step S408, and the total memory after the addition is determined. Whether or not the amount is less than the upper limit value of the resource management table 460 is referred to, and when it is determined that the amount is less than the upper limit value (Yes), the process proceeds to step S410.

In step S410, create an instance of the read-in event listener class on the memory, and move to step S412, save resource securing object reference information indicating a reference pointer value of the resource securing object in the created instance, and move to step S414 .

In step S414, it is determined whether the generation of the instance is successful, and when it is determined that the generation of the instance is successful (Yes), move to step S416, register the event listener of the generated instance in the event listener execution list, end a series of processing, and resume to the original processing.

On the other hand, in step S408, when it is determined that the total memory amount is equal to or greater than the upper limit (No), the process moves to step S418, and the memory amount calculated in step S406 is subtracted from the used memory amount of the reference resource management table 460, And move to step S420, notify error, move to step S414.

On the other hand, in step S404, when it is determined that the reference pointer of the resource securing object is not set (No), the process moves to step S422, and an instance of the read event listener class is created on the memory, and the process moves to step S414.

On the other hand, when it is judged in step S414 that the generation of the instance failed (No), and in step S402 that it is judged that the reading of the event listener class has failed (No), the series of processing ends and the original processing returns.

Next, the category reading process will be described in detail with reference to FIG. 13 .

Fig. 13 is a flowchart showing classification reading processing.

The category reading process is a process of reading categories according to a category reading command, and when executed by the CPU 30 , as shown in FIG. 13 , first, it moves to step S500 .

In step S500, it is determined whether to obtain the classification read-in instruction, and when it is determined to obtain the classification read-in instruction (Yes), move to step S502, otherwise (No), wait in step S500 until the classification read-in instruction is obtained.

In step S502, it is determined whether the category of the category read command is registered in the cache table, and if it is determined not to be registered in the cache table (No), the process moves to step S504.

In step S504, specify the separate function module 130 to which the classification of the classification read-in instruction belongs, and move to step S506, and determine whether the separate function module 130 is a resource according to the module information 420 contained in the specified separate function module 130 When it is determined that the management object is a resource management object (Yes), the process moves to step S508.

In step S508, the address of the resource management table 460 corresponding to the individual function module 130 is set as the reference pointer of the resource securing object, and the process moves to step S510.

In step S510, "1" is added to the number of activated categories in the reference resource management table 460, and the process moves to step S512, where it is determined whether the added total category number is less than the upper limit of the reference resource management table 460, If it is less than the upper limit (Yes), go to step S514.

In step S514, read the classification about the classification read instruction from the individual function module 130, move to step S516, register the read classification in the cache memory table, move to step S518, clear the resource guarantee object The pointer is referred to, a series of processing is terminated, and the original processing is restored.

On the other hand, in step S512, when it is determined that the total number of categories is equal to or greater than the upper limit (No), the process proceeds to step S520, where "1" is subtracted from the number of activated categories in the reference resource management table 460, and Go to step S522, report an error, and move to step S518.

On the other hand, in step S506, when it is determined that the individual function module 130 is not the object of resource management (No), the process moves to step S524, and the category about the category read command is read from the individual function module 130, and the process proceeds to step S524. S526, register the read category in the cache memory table, end a series of processing, and return to the original processing.

On the other hand, when it is determined in step S502 that the category of the category read command is registered in the cache table (Yes), a series of processing ends and the original processing returns.

Next, the event listener control process will be described in detail with reference to FIG. 14 .

Fig. 14 is a flowchart showing event listener control processing.

The event listener control process is a process for controlling the execution of the event listener, and when executed by the CPU 30 , as shown in FIG. 14 , it first moves to step S600 .

In step S600, obtain the event listener execution list, move to step S602, judge whether there is an event listener that should be executed according to the acquired event listener execution list, and when it is determined that there is an event listener that should be executed (Yes), move to Step S604.

In step S604, identify the individual function module 130 that constitutes the event audience generation source, and move to step S606, and determine whether the individual function module 130 is a resource management object according to the module information 420 contained in the specified individual function module 130 , when it is determined to be a resource management object (Yes), go to step S608.

In step S608, the address of the resource management table 460 corresponding to the individual function module 130 is set as the reference pointer of the resource guarantee object, and then the process moves to step S610, and the event listener execution process for executing the event listener is executed, and Move to step S612, clear the reference pointer of the resource secured object, and move to step S614.

In step S614, delete the event listener from the event listener execution list, and move to step S602.

On the other hand, in step S606, when it is determined that the individual function module 130 is not the object of resource management (No), the process moves to step S616, the event listener is executed, and the process moves to step S614.

On the other hand, in step S602, when it is determined that there is no event listener to be executed (No), a series of processing ends and the original processing returns.

Next, the event listener execution process in step S610 will be described in detail with reference to FIG. 15 .

Fig. 15 is a flowchart showing event listener execution processing.

When the event listener execution process is executed in step S610, as shown in FIG. 15, first, it moves to step S700.

In step S700, move the program pointer to the head of the command list contained in the event listener, and move to step S702, determine whether there is an instruction to be executed in the address indicated by the program pointer, when it is determined that there is an instruction to be executed ( Yes), move to step S704.

In step S704, the amount of memory required for instruction execution is calculated, the calculated amount of memory is added to the amount of used memory in the reference resource management table 460, and the process moves to step S706, where it is determined whether the added total amount of memory is less than the reference resource When it is determined that the upper limit value of the management table 460 is less than the upper limit value (Yes), the process moves to step S708.

In step S708, memory is reserved, and the process moves to step S710, executes the command at the address indicated by the program pointer, and then moves to step S712, moves the program pointer after the command list included in the event listener, and then moves to step S702.

On the other hand, in step S706, when it is determined that the total amount of memory is equal to or greater than the upper limit (No), the process proceeds to step S714, and the amount of memory calculated in step S704 is subtracted from the amount of used memory referring to the resource management table 460. , and move to step S716, notify an error, and move to step S712.

On the other hand, in step S702, when it is determined that there is no instruction to be executed (No), a series of processing ends, and the original processing returns.

Next, the instance deletion process will be described in detail with reference to FIG. 16 .

Fig. 16 is a flowchart showing instance deletion processing.

The instance deletion process is a process for deleting an instance, and when executed by the CPU 30 , as shown in FIG. 16 , first, it moves to step S800 .

In step S800, obtain the instance deletion list in which the instance to be deleted is registered, and move to step S802, judge whether there is an instance to be deleted according to the obtained instance deletion list, and if it is determined that there is an instance to be deleted (Yes) , move to step S804.

In step S804, obtain the reference information of the resource securing object from this instance, and move to step S805, and determine whether the obtaining of the reference information of the resource securing object is successful, and if it is determined that the obtaining of the reference information of the resource securing object is successful (Yes), move to Go to step S806.

In step S806, set the reference pointer of the resource guaranteed object according to the acquired resource guaranteed object reference information, and move to step S808, delete the instance, move to step S810, subtract from the used memory amount of the reference resource management table 460 Go to the memory required for execution of this instance, and move to step S812.

In step S812, clear the reference pointer of the resource guaranteed object, move to step S814, delete the instance from the instance deletion list, and move to step S802.

On the other hand, in step S805, when it is determined that acquisition of the reference information of the resource securing object has failed (No), the process moves to step S816, the instance is deleted, and the process moves to step S814.

On the other hand, in step S802, when it is determined that there is no instance to be deleted (No), a series of processing ends and the original processing returns.

Next, the operation of this embodiment will be described.

First, the case of executing the individual function modules 130 constituting the object of resource management will be described.

The network printer 100 executes individual function module control processing through execution of the common function module 120 . In the individual function module control process, through steps S102 to S110, when there is an individual function module 130 to be deleted, the individual function module 130 is deleted. Afterwards, through step S114, if it is determined that the number of modules currently being activated is less than the prescribed upper limit, then through steps S116 and S118, the independent function module 130 is read in, and it is determined whether the read in independent function module 130 is executable. In the execution permission judgment process, when the independent function module 130 has the same model information and compatible electronic signature information, and the upper limit value of the usable memory is less than the entire memory remaining capacity, allow implement.

If the execution of the individual function module 130 is allowed, the resource management table 460 is generated through steps S124-S128, and '1' is added to the number of modules currently being activated, and the individual function module 130 is activated. In the module activation process, through steps S510 and S306, the activation classification number and the used memory amount of the individual function modules 130 are added. At this time, if one of the number of activated categories and the amount of used memory exceeds the upper limit, an error is notified through step S522 or step S322, and the reading of categories or the generation of instances is stopped.

On the other hand, when both the number of activated categories and the amount of used memory are less than the upper limit, the categories of the individual function modules 130 are read through steps S514, S310, and S318, an instance of the imported categories is generated, and the individual function modules are registered. 130 event listeners. In the event listener registration process, through steps S510 and S406, the activation classification number and the used memory amount of the individual function modules 130 are added. At this time, if either the number of activated categories or the amount of used memory exceeds the upper limit, an error is notified via step S522 or step S420, and the reading of event audience categories or the generation of instances is stopped.

On the other hand, when both the number of activated categories and the amount of used memory are less than the upper limit, through steps S514, S410, and S416, the event listener category is read, an instance of the event listener category is generated, and the event listener of the generated instance is registered. in the event listener implementation list.

On the other hand, the network printer 100 executes event listener control processing through the execution of the common function module 120 . In the event listener control process, through step S704, the used memory amounts of the individual function modules 130 constituting the generation sources of the event listeners to be executed are added up. At this time, if the amount of used memory is equal to or greater than the upper limit, an error is notified through step S716, and the execution of the event listener is stopped.

On the other hand, when the amount of used memory is less than the upper limit value, the command included in the event listener is executed through step S710.

On the other hand, the network printer 100 executes instance deletion processing through the execution of the common function module 120 . In the instance deletion process, if there is an instance to be deleted, the instance is deleted through steps S808 and S810, and the used memory amount of the individual function module 130 constituting the generation source of the event listener is subtracted.

Next, the case of executing an individual function module 130 that is not a target of resource management will be described.

If the network printer 100 executes the individual function module control process, it will read the individual function module 130 through steps S116 and S118, and determine whether the read individual function module 130 can be executed.

If the execution of the individual function module 130 is allowed, the individual function module 130 is started after step S134. In the module activation process, through steps S524, S324, and S318, the classification of the individual function module 130 is read, an instance of the read classification is created, and an event listener of the individual function module 130 is registered. In the event listener registration process, through steps S524, S422, and S416, the event listener category is read, an instance of the event listener category is generated, and the event listener of the generated instance is registered in the event listener execution list.

On the other hand, when the network printer 100 executes the event listener control process, the command included in the event listener to be executed is executed through step S616.

On the other hand, if the network printer 100 executes the instance deletion process, if there is an instance to be deleted, the instance is deleted through step S816.

FIG. 17 is a timing chart showing the parallel execution of individual function modules b and c constituting resource management objects.

In FIG. 17 , the solid line indicates the slider used in the execution of the individual function module b among the sliders of the individual function module b and the sliders of the common function module 120 . Also, a dotted line indicates a slider used in the execution of the individual function module c among the sliders of the individual function module c and the sliders of the common function module 120 .

When the individual function module b is executed, the AM slider (start processing unit) of the common function module 120 is executed, the individual function module b is activated, and the slider is executed. In addition, the AM slider of the common function module 120 is executed, and an event listener of the individual function module b is generated. Afterwards, when an event corresponding to the individual function module b occurs, the AM slider (event processing unit) of the common function module 120 is executed, the category of the individual function module b is read, and the loaded instance is generated. In the case where the individual function module b is unnecessary, the instance deletion slider of the common function module 120 is executed to delete the instance of the individual function module b. In this series of processes, the number of start-up classes and the amount of used memory that increase or decrease with the execution of the sliders of the common function module 120 and the individual function module b are managed, and the amount of resources used by the individual function module b is limited so as not to be insufficient. Specified upper limit value set by individual function module b.

This operation is also the same for the individual function module c. Among them, in this series of processes, the number of activation categories and the amount of used memory that increase or decrease with the execution of the sliders of the common function module 120 and the individual function module c are managed, and the amount of resources used by the individual function module c is limited, so that It is less than the specified upper limit value set for the individual function module c.

Allocate classification resources (number of classifications or sizes) in this embodiment to functional modules that provide classifications. Therefore, when reading the category possessed by the functional module b and using the category, the functional module b consumes category resources regardless of whether the slider being used is the functional module b or the functional module c. Therefore, in FIG. 17 , the resource consumption in the assorted loaded slider of the individual functional module b is only the thick solid line indicating the area of the functional module b. In addition, the resource consumption in the slider loaded with separate functional modules c is only the thick dotted line indicating the area of the functional module c.

Therefore, in step S504, the specific function module is not read into the classified individual function module, but the classified individual function module is provided, and resource allocation is performed on the specific individual function module in the subsequent processing.

In this way, the resources consumed by the slider of a certain individual function module 130 are allocated to any one of the common function module, its own individual function module 130 and other individual function modules 130 .

Therefore, in this embodiment, the amount of resources used by the entire JAVA (registered trademark) software is limited, the resource restriction information 400 is acquired from the individual function module 130, and the amount of memory used by the individual function module 130 is limited based on the acquired resource restriction information 400.

Thus, since the amount of resources can be limited by the JAVA (registered trademark) software as a whole, and the amount of memory can be limited in units of individual functional modules 130, the amount of software in the execution environment of the JAVA (registered trademark) application program can be reduced compared to before. Possibility of actions becoming unstable due to lack of resources, etc. In addition, since the amount of memory is limited in units of individual functional modules 130 , it can be implemented without executing a plurality of common functional modules 120 , so that an increase in resource usage can be suppressed compared to conventional ones.

In addition, in this embodiment, for each individual function module 130 constituting the object of resource management, the amount of memory used by the individual function module 130 and the memory used by the common function module 120 for execution of the individual function module 130 are limited. volume and number of categories initiated.

Thus, since the amount of memory used by the common function module 120 and the number of classes to be activated can be limited in units of individual function modules 130, it is possible to further reduce the failure of software operations due to insufficient resources or the like in the execution environment of a JAVA (registered trademark) application program. possibility of becoming unstable.

In Embodiment 1 above, the resource restriction unit 12 corresponds to the first resource restriction unit of the mode 1 or 6, the upper limit value acquisition unit 18 and step S124 correspond to the resource restriction information acquisition unit of the mode 1, 3, 6 or 8, Step S124 corresponds to the step of obtaining resource limitation information in form 16, 18, 21, 22, 24 or 25. In addition, the resource limiting unit 20 and steps S214, S218, S120, S306, S308, S406, S408, S510, S512, S704, and S706 correspond to the second resource limiting means of mode 1, 2, 6 or 7, or mode 3, 4, 8, or 9 resource-limited components.

In addition, in the first embodiment above, steps S214, S218, S120, S306, S308, S406, S408, S510, S512, S704, and S706 correspond to the second resource restriction step of modes 16, 17, 21-23, or the mode 16, 18, 19, 21, 22, 24-26 resource limitation steps. In addition, the common function block 120 corresponds to the first function block of forms 1-10, 16-27, and the individual function block 130 corresponds to the second function block of forms 1-10, 16-27.

Embodiment 2

Next, Embodiment 2 of the present invention will be described.

This embodiment differs from the first embodiment described above in that only the amount of resources used by the common function module 120 in the execution of the individual function module 130 is limited.

At this time, steps S404, S406, S408, S410, S412, S418, and S420 are not executed in the event listener registration process of FIG. 12 .

The event listener registration process of FIG. 12 is a slide executed by the individual function module 130, and specifically performs registration of an event listener. Since only the resources used by the common function module 120 and not the resources used by the individual function module 130 are measured only by executing the individual function module 130 , the processing of the above steps is unnecessary.

The event listener registration process in FIG. 12 corresponds to the event listener registration process (S318) in FIG. 11 , but the resource securing by executing the individual function module 130 other than FIG. 12 constitutes the classification function call process (S316). The classification function call process can be configured in the same way as the event listener execution process in FIG. 15 . In the case of the configuration shown in FIG. 15 , in the present embodiment, processing corresponding to steps S704 , S706 , S708 , S714 , and S716 is executed.

In this way, since the amount of resources used by the common function module 120 can be limited in units of individual function modules 130, the possibility of software operation becoming unstable due to lack of resources or the like can be reduced compared to conventional methods. In addition, since the amount of resources is limited in units of individual functional modules 130 , it can be implemented without executing a plurality of common functional modules 120 , so that an increase in resource usage can be suppressed compared to conventional ones.

In the above-mentioned Embodiment 2, the upper limit value acquisition unit 18 and step S124 correspond to the resource limitation information acquisition means of mode 3 or 8, and step S124 corresponds to the resource limitation information acquisition step of mode 18, 24 or 25, and the resource limitation unit 20 And steps S214 , S218 , S120 , S306 , S308 , S510 , S512 , S704 , and S706 correspond to the resource limiting component in mode 3, 4, 8 or 9. In addition, steps S214, S218, S120, S306, S308, S510, S512, S704, and S706 correspond to the resource limitation steps of modes 18, 19, 24-26, and the common function module 120 corresponds to modes 3-5, 8-10 , 18-20, 24-27 first function modules.

In addition, in the above-mentioned second embodiment, the independent functional block 130 corresponds to the second functional block of the forms 3-5, 8-10, 18-20, and 24-27.

In addition, in Embodiments 1 and 2 described above, the functions constituted by the resource measurement unit 10 , the resource limitation unit 12 , the resource measurement unit 16 , the upper limit value acquisition unit 18 , and the resource limitation unit 20 are configured as internal functions of the network printer 100 . functions, but is not limited thereto, and may be implemented as functions of a network card installed in the network printer 100 .

At this time, the resource limiting unit 12 corresponds to the first resource limiting unit of the mode 11, the upper limit value acquiring unit 18 and step S124 correspond to the resource limiting information acquiring unit of the mode 11 or 13, and the resource limiting unit 20 and the steps S214, S218, S120, S306, S308, S406, S408, S510, S512, S704, and S706 correspond to the second resource limiting means of Formula 11 or 12, or the resource limiting means of Formula 13 or 14. In addition, the common function block 120 corresponds to the first function block of the forms 11-15, and the individual function block 130 corresponds to the second function block of the forms 11-15.

In addition, in the above-mentioned Embodiments 1 and 2, the amount of memory used and the number of start-up categories are limited as the amount of resources, but not limited to this, the number of plug-in connections, the number of file connections, the number of files, the capacity of files, the size of categories, and the size of ZIP files may also be limited. Storage capacity, CPU utilization, plug-in traffic, and file read/write volume.

In addition, in the above-mentioned first and second embodiments, the case where the control program stored in advance in the ROM 32 is executed while executing the processes shown in the flowcharts of FIGS. The program is stored in a storage medium containing a program representing these steps, and the program is read into the RAM 34 and executed.

Here, the storage medium refers to a semiconductor storage medium such as RAM and ROM, a magnetic storage type storage medium such as FD and HD, an optical reading method storage medium such as CD, CDV, LD, and DVD, and a magnetic storage type/optical reading storage medium such as MO. The format storage medium includes any storage medium as long as it is a computer-readable storage medium regardless of the reading method such as electronic, magnetic, or optical.

In addition, in the above-mentioned Embodiments 1 and 2, as shown in FIG. 2, the resource management system, the printer, the network card for the printer, the resource management program, and the resource management method of the present invention are applied to the JAVA (registered trademark) application program. In the execution environment, JAVA (registered trademark) classifies and sets resources used, but is not limited thereto, and can be applied to other cases without departing from the spirit of the present invention. It can replace the network printer 100 and is suitable for, for example, projectors, scanners, electronic paper (paper), local gateways, personal computers, PDA (Personal Digital Assistant), network storage, audio equipment, mobile phones, PHS (registered face label) (Personal Handyphone System), watch-type PDA, STB (Set Top Box), POS (Point Of Sale) terminal, FAX machine, telephone (including IP telephone, etc.), digital TV and other devices.

Claims (30)

1, a kind of resource management system is managed the 1st functional module and the employed resource of a plurality of the 2nd functional modules, needs described the 1st functional module in the execution of described the 2nd functional module, it is characterized in that possessing:

The 1st resource limit parts, it limits described the 1st functional module and the whole stock number of using of described a plurality of the 2nd functional module;

Resource limit information obtains parts, and it obtains the resource limit information of the restrictive condition of expression resource; With

The 2nd resource limit parts, it limits the stock number of at least one use in described a plurality of the 2nd functional module according to obtaining the resource limit information that parts are obtained by described resource limit information.

2, resource management system according to claim 1 is characterized in that:

Stock number by described the 2nd resource limit component limitations is the stock number of described the 2nd functional module use and the stock number that described the 1st functional module is used in the execution of the 2nd functional module.

3, resource management system according to claim 1 and 2 is characterized in that:

Described the 2nd functional module is made of one or more JAVA classification,

Described the 1st functional module is the execution controlling application program of the execution of the described JAVA classification of control.

4, a kind of resource management system is managed the 1st functional module and the employed resource of a plurality of the 2nd functional modules, needs described the 1st functional module in the execution of described the 2nd functional module, it is characterized in that possessing:

Resource limit information obtains parts, and it obtains the resource limit information of the restrictive condition of expression resource; With

The resource limit parts, it limits the stock number that described the 1st functional module is used according to obtaining the resource limit information that parts are obtained by described resource limit information in the execution of described the 2nd functional module.

5, resource management system according to claim 4 is characterized in that:

Stock number by described resource limit component limitations is the stock number of described the 2nd functional module use and the stock number that described the 1st functional module is used in the execution of the 2nd functional module.

6, according to claim 4 or 5 described resource management systems, it is characterized in that:

Described the 2nd functional module is made of one or more JAVA classification,

Described the 1st functional module is the execution controlling application program of the execution of the described JAVA classification of control.

7, a kind of printer is managed the 1st functional module and the employed resource of a plurality of the 2nd functional modules, needs described the 1st functional module in the execution of described the 2nd functional module, it is characterized in that possessing:

The 1st resource limit parts, it limits described the 1st functional module and the whole stock number of using of described a plurality of the 2nd functional module;

Resource limit information obtains parts, and it obtains the resource limit information of the restrictive condition of expression resource; With

The 2nd resource limit parts, it limits the stock number of at least one use in described a plurality of the 2nd functional module according to obtaining the resource limit information that parts are obtained by described resource limit information.

8, printer according to claim 7 is characterized in that:

Stock number by described the 2nd resource limit component limitations is the stock number of described the 2nd functional module use and the stock number that described the 1st functional module is used in the execution of the 2nd functional module.

9, according to claim 7 or 8 described printers, it is characterized in that:

Described the 2nd functional module is made of one or more JAVA classification,

Described the 1st functional module is the execution controlling application program of the execution of the described JAVA classification of control.

10, a kind of printer is managed the 1st functional module and the employed resource of a plurality of the 2nd functional modules, needs described the 1st functional module in the execution of described the 2nd functional module, it is characterized in that possessing:

Resource limit information obtains parts, and it obtains the resource limit information of the restrictive condition of expression resource; With

The resource limit parts, it limits the stock number that described the 1st functional module is used according to obtaining the resource limit information that parts are obtained by described resource limit information in the execution of described the 2nd functional module.

11, printer according to claim 10 is characterized in that:

Stock number by described resource limit component limitations is the stock number of described the 2nd functional module use and the stock number that described the 1st functional module is used in the execution of the 2nd functional module.

12, according to claim 10 or 11 described printers, it is characterized in that:

Described the 2nd functional module is made of one or more JAVA classification,

Described the 1st functional module is the execution controlling application program of the execution of the described JAVA classification of control.

13, a kind of printer network card is managed the 1st functional module and the employed resource of a plurality of the 2nd functional modules, needs described the 1st functional module in the execution of described the 2nd functional module, it is characterized in that possessing:

The 1st resource limit parts, it limits described the 1st functional module and the whole stock number of using of described a plurality of the 2nd functional module;

Resource limit information obtains parts, and it obtains the resource limit information of the restrictive condition of expression resource; With

The 2nd resource limit parts, it limits the stock number of at least one use in described a plurality of the 2nd functional module according to obtaining the resource limit information that parts are obtained by described resource limit information.

14, printer network card according to claim 13 is characterized in that:

Stock number by described the 2nd resource limit component limitations is the stock number of described the 2nd functional module use and the stock number that described the 1st functional module is used in the execution of the 2nd functional module.

15, according to claim 13 or 14 described printer network cards, it is characterized in that:

Described the 2nd functional module is made of one or more JAVA classification,

Described the 1st functional module is the execution controlling application program of the execution of the described JAVA classification of control.

16, a kind of printer network card is managed the 1st functional module and the employed resource of a plurality of the 2nd functional modules, needs described the 1st functional module in the execution of described the 2nd functional module, it is characterized in that possessing:

Resource limit information obtains parts, and it obtains the resource limit information of the restrictive condition of expression resource; With

The resource limit parts, it limits the stock number that described the 1st functional module is used according to obtaining the resource limit information that parts are obtained by described resource limit information in the execution of described the 2nd functional module.

17, printer network card according to claim 16 is characterized in that:

Stock number by described resource limit component limitations is the stock number of described the 2nd functional module use and the stock number that described the 1st functional module is used in the execution of the 2nd functional module.

18, according to claim 16 or 17 described printer network cards, it is characterized in that:

Described the 2nd functional module is made of one or more JAVA classification,

Described the 1st functional module is the execution controlling application program of the execution of the described JAVA classification of control.

19, a kind of method for managing resource is managed the 1st functional module and the employed resource of a plurality of the 2nd functional modules, needs described the 1st functional module in the execution of described the 2nd functional module, it is characterized in that, comprises:

The 1st resource limit step, it limits described the 1st functional module and the whole stock number of using of described a plurality of the 2nd functional module;

Resource limit information obtains step, and it obtains the resource limit information of the restrictive condition of expression resource; With

The 2nd resource limit step, it limits the stock number of at least one use in described a plurality of the 2nd functional module according to obtaining the resource limit information that step obtains by described resource limit information.

20, method for managing resource according to claim 19 is characterized in that:

Stock number by described the 2nd resource limit step restriction is the stock number of described the 2nd functional module use and the stock number that described the 1st functional module is used in the execution of the 2nd functional module.

21, according to claim 18 or 19 described method for managing resource, it is characterized in that:

Described the 2nd functional module is made of one or more JAVA classification,

Described the 1st functional module is the execution controlling application program of the execution of the described JAVA classification of control.

22, a kind of method for managing resource is managed the 1st functional module and the employed resource of a plurality of the 2nd functional modules, needs described the 1st functional module in the execution of described the 2nd functional module, it is characterized in that, comprises:

The 1st resource limit step is by described the 1st functional module of the 1st resource limit component limitations and the whole stock number of using of described a plurality of the 2nd functional module;

Resource limit information obtains step, obtains the resource limit information that parts are obtained the restrictive condition of expression resource by higher limit; With

The 2nd resource limit step according to obtaining the resource limit information that step obtains by described resource limit information, limits the stock number of at least one use in described a plurality of the 2nd functional module by the 2nd resource limit parts.

23, method for managing resource according to claim 22 is characterized in that:

Stock number by described the 2nd resource limit step restriction is the stock number of described the 2nd functional module use and the stock number that described the 1st functional module is used in the execution of the 2nd functional module.

24, according to claim 22 or 23 described method for managing resource, it is characterized in that:

Described the 2nd functional module is made of one or more JAVA classification,

Described the 1st functional module is the execution controlling application program of the execution of the described JAVA classification of control.

25, a kind of method for managing resource is managed the 1st functional module and the employed resource of a plurality of the 2nd functional modules, needs described the 1st functional module in the execution of described the 2nd functional module, it is characterized in that, comprises:

Resource limit information obtains step, and it obtains the resource limit information of the restrictive condition of expression resource; With

The resource limit step, it limits the stock number that described the 1st functional module is used according to obtaining the resource limit information that step obtains by described resource limit information in the execution of described the 2nd functional module.

26, method for managing resource according to claim 25 is characterized in that:

Stock number by described resource limit step restriction is the stock number of described the 2nd functional module use and the stock number that described the 1st functional module is used in the execution of the 2nd functional module.

27, according to claim 25 or 26 described method for managing resource, it is characterized in that:

Described the 2nd functional module is made of one or more JAVA classification,

Described the 1st functional module is the execution controlling application program of the execution of the described JAVA classification of control.

28, a kind of method for managing resource is managed the 1st functional module and the employed resource of a plurality of the 2nd functional modules, needs described the 1st functional module in the execution of described the 2nd functional module, it is characterized in that, comprises:

Resource limit information obtains step, obtains the resource limit information that parts are obtained the restrictive condition of expression resource by higher limit; With

The resource limit step according to obtaining the resource limit information that step obtains by described resource limit information, limits the stock number that described the 1st functional module is used by the 2nd resource limit parts in the execution of described the 2nd functional module.

29, method for managing resource according to claim 28 is characterized in that:

Stock number by described resource limit step restriction is the stock number of described the 2nd functional module use and the stock number that described the 1st functional module is used in the execution of the 2nd functional module.

30, according to claim 28 or 29 described method for managing resource, it is characterized in that:

Described the 2nd functional module is made of one or more JAVA classification,

Described the 1st functional module is the execution controlling application program of the execution of the described JAVA classification of control.

Images