JP2014194705A - Program conversion device, program execution device, program conversion method and conversion program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technology for more easily shifting a program including an instruction dependent on hardware.SOLUTION: A program conversion device includes an instruction specification part for specifying a predetermined instruction of processing to a computer, a device specification part for specifying a device to be used for processing about an instruction, a data format specification part for specifying a format of data to be written to the device in the instruction, an end specification part for specifying whether to perform end processing after writing the data to the device in the instruction, and an instruction replacement part for specifying the specified device, a format of the data, and a program to be accessed in accordance with whether to perform end processing, and replacing a prescribed instruction with an instruction to access the program.

Description

  The present invention relates to a program conversion technique.

  Conventionally, when it is determined that the OS stored in the runtime table is included in the host program source, the host program source is read by specifying the runtime as a parameter of the compiler, this is broken down into tokens, and the object code Is generated, the object code is generated so that the runtime stored in the runtime table is called when it is determined that the runtime statement is necessary for the statement of the object code and the parameter specification is specified for the compilation. There are techniques for inserting code into a compiled server execution object. Patent Document 1 describes a technique related to such a technique.

JP 2010-205068 A

  The above technique does not consider the case where the host program source includes hardware-dependent instructions. For example, an instruction operation for controlling an FD device (flexible disk drive device) or a CMT device (cartridge magnetic tape drive device). It was difficult to migrate.

  An object of the present invention is to provide a technique for more easily migrating a program including instructions that depend on hardware.

  The present application includes a plurality of means for solving at least a part of the above-described problems. Examples of such means are as follows. In order to solve the above-described problem, a program conversion apparatus according to the present invention includes an instruction specifying unit that specifies a predetermined instruction for processing to a computer, an apparatus specifying unit that specifies an apparatus used for processing related to the instruction, and the instruction. A data format specifying unit for specifying a format of data to be written to the device; an end specifying unit for specifying whether or not to perform end processing after writing the data to the device in the command; and the specified device, And a command replacement unit that identifies a program to be called according to a data format and whether or not to perform the termination process, and replaces the predetermined command with a command to call the program.

  Further, in the program conversion device, the data format specifying unit, when the device is a CMT device, according to the command, selects one of a plurality of formats including a non-label format and a standard label format. The format may be specified.

  The program conversion apparatus includes a storage unit that stores catalog information that associates a variable length or fixed length format for each file, and the data format specifying unit, when the device is a CMT device, Whether the data has a fixed length or a variable length may be specified using the catalog information for the file related to the data.

  In the program conversion device, the data format specifying unit may be one of a plurality of formats including a DOS format or an IBM format depending on the type of the instruction when the device is an FD device. The format may be specified.

  In the program conversion device, the end specifying unit specifies that the end processing is not performed when an instruction to be executed next to the predetermined instruction uses the device. It may be a feature.

  In the program conversion apparatus, the predetermined instruction may be an instruction written in JCL.

  Further, in the program conversion device, the program is a program that performs control on the storage device according to whether the specified device, the format of the data, or whether to perform the termination process. It may be a feature.

  Further, the program execution device according to the present invention includes an instruction execution unit that executes a predetermined instruction for processing to a computer, a device specification unit that specifies a device used for processing related to the command, and data to be written to the device in the command A data format specifying unit for specifying the format of the data, an end specifying unit for specifying whether or not to perform end processing after writing the data to the device in the command, the specified device, the format of the data, An instruction replacement unit that identifies a program to be called according to whether or not to perform termination processing, and replaces the predetermined instruction with an instruction to call the program, wherein the instruction execution unit replaces the predetermined instruction And executing an instruction for calling the program.

  The program conversion method according to the present invention is a program conversion method using a computer, wherein the computer includes an instruction specifying step for specifying a predetermined instruction for processing to the computer, and an apparatus used for the processing related to the instruction. A device specifying step for specifying, a data format specifying step for specifying a format of data to be written to the device in the command, and an end specification for specifying whether or not to perform end processing after the data is written to the device in the command. An instruction replacement step for identifying a program to be called according to whether or not to perform the step, the specified device, the format of the data, and the termination process, and replacing the predetermined instruction with an instruction for calling the program; It is characterized by implementing.

  The conversion program according to the present invention is a program that causes a computer to execute a program conversion procedure, operates the computer as a control unit, and specifies a predetermined instruction for processing the computer with respect to the control unit. An instruction specifying procedure, a device specifying procedure for specifying a device used for processing related to the command, a data format specifying procedure for specifying a format of data to be written to the device in the command, and the data to the device in the command The end specifying procedure for specifying whether or not to perform the end processing after writing, the specified device, the format of the data, the program to be called according to whether or not to perform the end processing, and the predetermined command Replace the instruction with an instruction to call the above program. Characterized in that to.

  Problems, configurations, and effects other than those described above will become apparent from the following description of embodiments.

  According to the present invention, it is possible to more easily migrate a program including hardware-dependent instructions.

It is a figure which shows the structural example of the migration system which concerns on embodiment of this invention. It is a figure which shows the data structure stored in a program use apparatus corresponding | compatible information storage part. It is a figure which shows the data structure stored in an instruction use apparatus corresponding | compatible information storage part. It is a figure which shows the data structure stored in a format information storage part. It is a figure which shows the data structure stored in a catalog information storage part. It is a figure which shows the hardware constitutions of a program conversion apparatus. It is a figure which shows a program transfer process flow. It is a figure which shows a command analysis process flow.

  Hereinafter, a migration system 1 to which a first embodiment according to the present invention is applied will be described with reference to the drawings.

  FIG. 1 is a diagram showing a configuration example of a migration system 1 in the first embodiment of the present invention. The migration system 1 includes a program conversion device 100.

  In recent years, the performance of open systems has been improved and the price has been reduced, and legacy migration has been progressing in order to reduce the operating costs of legacy systems. Legacy migration refers to migration of a legacy system using a general-purpose machine to an open system using a server. An open system is a system in which interoperability is improved by making standards compatible between devices participating in the system. Mainly, processing requests are sent from the client to the server, and the client receives processing results from the server. A client-server system that implements predetermined processing.

  In the migration system 1 according to the present invention, the automatic control method of the FD device and the CMT device of the general-purpose machine is analyzed, the JCL (job control language) of the general-purpose machine is analyzed, and the JCL syntax of the device control part is in accordance with a predetermined conversion rule. By converting to JCL for open system, the hardware model-dependent syntax is absorbed and automatic control of FD device and CMT device in open system is established.

  According to the opening of the system by straight conversion, the program can be used as it is even after moving to the server, including COBOL and JCL used in general-purpose machines, but the control for the FD device and CMT device is hardware. Therefore, it is necessary to absorb the hardware dependency on JCL in order to control the FD device and the CMT device after opening.

  Normally, when adopting the open conversion method by straight conversion, it is expected to move from the general-purpose machine environment to the server environment in a short period of time, so increase the man-hours by investigating information necessary for JCL conversion. In order to avoid this, there are many cases where the operation procedure is changed by manually controlling the apparatus. However, a system that has performed such a transition has problems that a reduction in work efficiency and human error occur due to manual operation of the FD device and the CMT device.

  In the open system after migration, when the use of the FD device or CMT device is abolished, it is necessary to migrate the data stored in the FD medium or CMT medium to the disk, but the data migration work is used. In many cases, not only does the width increase depending on the number of media that are present, but also the number of man-hours increases.

  Therefore, in the migration system 1 according to the present invention, in the program conversion process of FIG. 7 to be described later, an instruction analysis process and a program conversion process are performed in the program conversion apparatus 100, so that an existing FD apparatus or a CMT apparatus is used. A method for realizing conversion corresponding to an open system such as JCL.

  Returning to the description of FIG. The program conversion apparatus 100 is an information processing apparatus such as a server. In addition, for example, the program conversion apparatus 100 may be various information processing apparatuses such as a personal computer, a smartphone, and a workstation.

  The program conversion apparatus 100 includes a control unit 110 and a storage unit 120. The control unit 110 includes an instruction analysis unit 111, a used device identification unit 112, a medium format identification unit 113, a program conversion unit 114, a program execution control unit 115, and an external device control unit 116. The storage unit 120 includes a program storage unit 121, a program use device correspondence information storage unit 122, an instruction use device correspondence information storage unit 123, a format information storage unit 124, a catalog information storage unit 125, and a wrapper program storage unit. 126 and a post-conversion program storage unit 127.

  FIG. 2 is a diagram illustrating an example of a data structure of the program using device correspondence information storage unit 122. The program use device correspondence information storage unit 122 stores the condition 122A and the use device 122B in association with each other.

  The condition 122A is information for specifying the condition. For example, the condition 122A stores information specifying specific conditions such as “there is FD format designation information in the execution step” and “no FD format designation information in the execution step”.

  The use device 122B is information for specifying the relevance of the device to be used according to the condition 122A. For example, when the condition 122A is “the execution step includes FD format designation information”, the use device 122B is information that the “FD device” is used.

  FIG. 3 is a diagram illustrating an example of a data structure of the instruction using device correspondence information storage unit 123. The instruction use device correspondence information storage unit 123 stores the condition 123A and the use device 123B in association with each other.

  The condition 123A is information for specifying the condition. For example, the condition 123A stores information specifying specific conditions such as “there is CMT device designation information in the program” and “there is no CMT device designation information in the program”.

  The use device 123B is information for specifying the relevance of the device to be used according to the condition 123A. For example, when the condition 123A is “there is CMT device designation information in the program”, the using device 123B is information that the “CMT device” is used.

  FIG. 4 is a diagram illustrating an example of the data structure of the format information storage unit 124. The format information storage unit 124 stores the condition 124A and the medium format 124B in association with each other.

  The condition 124A is information for specifying the condition. For example, the condition 124A stores information specifying specific conditions such as “there is non-label format designation information in the program” and “no non-label format designation information in the program”.

  The medium format 124B is information for specifying the relevance of the format of the medium to be recorded according to the condition 124A. For example, when the condition 124A is “there is non-label format designation information in the program”, the medium format 124B is information that “non-label format” is used.

  FIG. 5 is a diagram illustrating an example of the data structure of the catalog information storage unit 125. In the catalog information storage unit 125, a file 125A, a file format 125B, a record length 125C, and a block length 125D are stored in association with each other.

  The file 125A is information for specifying a file. For example, the file 125A stores information specifying a specific file such as “file 1” or “file 2”.

  The file format 125B is information for specifying the data format of the file 125A. For example, when the file 125A is “file 1”, the information indicates that the file format 125B is “fixed length”.

  The record length 125C is information for specifying the record length of the data in the file 125A. For example, when the file 125A is “file 1”, the record length 125C is “111” bytes.

  The block length 125D is information for specifying the data block length of the file 125A. For example, when the file 125A is “file 1”, the block length 125D is “999” bytes.

  Returning to the description of FIG. The instruction analysis unit 111 analyzes a migration source program, that is, a program such as JCL, and specifies a hardware drive control instruction that requires conversion. In addition, the instruction analysis unit 111 also specifies whether or not to perform end processing after writing data to the apparatus in the instruction. That is, it can be said that the instruction analysis unit 111 specifies a predetermined instruction for processing to the computer and determines whether or not the end process is necessary.

  The use device specifying unit 112 reads the program use device correspondence information storage unit 122 and the instruction use device correspondence information storage unit 123 to determine whether or not the conditions 122A and 123A are satisfied. Using the information of the corresponding use device 122B and use device 123B, the related devices are associated with each other. Note that when the used device 122B is “unknown” or when the used device 123B is “not used”, the used device specifying unit 112 does not associate the device. That is, it can be said that the used device specifying unit 112 specifies a device used for processing related to the command.

  The medium format specifying unit 113 reads the format information storage unit 124, determines whether or not the condition 124A is satisfied, and if so, uses the information of the corresponding medium format 124B to select a relevant medium format. Associate. That is, it can be said that the medium format specifying unit 113 specifies the format of data to be written to the device in the command. In particular, when the using device is a CMT device, the medium format specifying unit 113 specifies one format among a plurality of formats including a non-label format and a standard label format in accordance with a command. Further, the medium format specifying unit 113 specifies whether the data to be written has a fixed length or a variable length by using catalog information for a file related to the data. In addition, when the using device is an FD device, the medium format specifying unit 113 specifies one format among a plurality of formats including a DOS format and an IBM format according to the type of instruction.

  The program conversion unit 114 specifies a command statement for controlling the FD device and the CMT device stored in the wrapper program storage unit 126 using the information of the device and the format associated with the result analyzed by the command analysis unit 111. To do. Then, the program conversion unit 114 replaces the migration source program, that is, the JCL instruction with the call instruction of the wrapper program. Then, the program conversion unit 114 causes the converted program storage unit 127 to store the program whose instruction has been replaced. In other words, the program conversion unit 114 is an instruction replacement unit that specifies a program to be called according to the specified device, data format, and whether to perform termination processing, and replaces a predetermined instruction with an instruction to call the program. It can be said.

  The program execution control unit 115 controls the execution of the program stored in the converted program storage unit 127. Specifically, processing is executed in accordance with an instruction included in the JCL, and for the wrapper program call instruction, the corresponding wrapper program is specified from the wrapper program storage unit 126 and execution is started.

  The external device control unit 116 controls the operation of a device connected to the outside of the program conversion apparatus 100. For example, the external device control unit 116 controls operations of devices such as an FD device and a CMT device.

  FIG. 6 is a diagram illustrating a hardware configuration example of the program conversion apparatus 100. The program conversion apparatus 100 includes an arithmetic device 102, an external storage device 103, a main storage device 104, an output device 105, a communication device 106, an FD device 107, a CMT device 108, and a bus 109 that connects the devices. At least. In addition, the program conversion apparatus 100 may include an input device 101 such as a keyboard and a mouse.

  The arithmetic device 102 is an arithmetic device such as a CPU (Central Processing Unit).

  The external storage device 103 is a non-volatile storage device such as a so-called hard disk (Hard Disk Drive), SSD (Solid State Drive) or flash memory capable of storing digital information.

  The main storage device 104 is a memory device such as a RAM (Random Access Memory).

  The output device 105 is a display device such as a liquid crystal display or an organic EL (Electro Luminescence) display.

  The communication device 106 is a device such as a network card that establishes a communication path with another device via a network (not shown) and transmits / receives information.

  The FD device 107 reads a stored data by driving a flexible disk. In addition, the FD device 107 drives a flexible disk and writes predetermined data.

  The CMT device 108 drives a cartridge type magnetic tape and reads stored data. The CMT device 108 drives a cartridge type magnetic tape to write predetermined data.

  The input device 101 is various input devices such as a keyboard, a mouse, and a touch panel.

  The input device 101, the arithmetic device 102, the external storage device 103, the main storage device 104, the output device 105, the communication device 106, the FD device 107, and the CMT device 108 are connected by connecting wires such as a bus 109. Connected to each other.

  The instruction analysis unit 111, the used device identification unit 112, the medium format identification unit 113, the program conversion unit 114, the program execution control unit 115, and the external device control unit 116 of the program conversion device 100 cause the arithmetic device 102 to perform processing. Realized by the program. The program is stored in the main storage device 104, the external storage device 103, or a ROM device (not shown), loaded onto the main storage device 104 for execution, and executed by the arithmetic device 102.

  The storage unit 120 of the program conversion apparatus 100 is realized by the main storage device 104 and the external storage device 103. The above is the hardware configuration example of the program conversion apparatus 100.

  [Description of Operation] Next, the operation of the program conversion apparatus 100 in the present embodiment will be described. FIG. 7 is a flowchart of a program migration process executed by the program conversion apparatus 100 according to this embodiment.

  The program migration process is started when the program conversion apparatus 100 starts operating and is instructed to start the process.

  First, the instruction analysis unit 111 starts instruction analysis processing (step S001). Specifically, in the instruction analysis process, the instruction analysis unit 111 includes a program storage unit 121, a program use device correspondence information storage unit 122, an instruction use device correspondence information storage unit 123, a format information storage unit 124, The command analysis processing shown in FIG. 8 is executed using the catalog information storage unit 125.

Then, the program conversion unit 114 receives the result of the instruction analysis process and starts program conversion (step S002). Specifically, the program conversion unit 114 converts a program using a program stored in the program storage unit 121 and a wrapper program stored in the wrapper program storage unit 126. Then, the program conversion unit 114 stores the converted program in the post-conversion program storage unit 127.

  The above is the process flow of the program migration process. By executing the program migration processing, a program such as JCL used in a general-purpose machine can be converted into a program such as JCL used in an open system.

  FIG. 8 is a flowchart of instruction analysis processing executed by the program conversion apparatus 100 according to this embodiment. The instruction analysis process is started for each execution step described in the program to be converted in step S001 of the program transfer process.

  First, the using device specifying unit 112 determines whether or not the execution step uses an FD device (step S101). Specifically, the use device specifying unit 112 specifies whether or not the program to be called in the execution step corresponds to the condition 122A of the program use device correspondence information storage unit 122. Information is acquired to determine whether or not to use the FD device.

  When the execution step uses an FD device (in the case of “Yes” in step S101), the medium format specifying unit 113 specifies the format of the FD used in the execution step (step S102). Specifically, the medium format specifying unit 113 specifies format information (for example, an IBM format or a DOS format) specified in a program called in the execution step.

  Then, the instruction analysis unit 111 specifies whether or not to continue the FD access in the execution step (step S103). Specifically, the instruction analysis unit 111 specifies whether or not the process for performing the FD access is performed in the execution step subsequent to the execution step, and when the process for performing the FD access is performed, the FD access If it is not implemented, it is specified that the FD access is not continued.

  Then, the instruction analysis unit 111 allocates and specifies a wrapper program to be called in the execution step (step S104). Specifically, the instruction analysis unit 111 determines the wrapper program storage unit to use according to the device to be used in the execution step, the format to be used, and whether to continuously access in the next execution step. 126. Then, the instruction analysis unit 111 ends the instruction analysis process. Note that the following 13 patterns are assumed as the wrapper program according to the present embodiment.

  The first pattern is a first wrapper program that executes a command for copying a specified file to the FD device in the DOS format and does not perform a termination process (performs a continuation process).

  The second pattern is a second wrapper program for executing a command for performing a termination process (not performing a continuation process), which is a process for copying a specified file in the DOS format to the FD apparatus.

  The third pattern is a third wrapper program that executes a command for copying a specified file in the IBM format to the FD device, and does not perform a termination process (performs a continuation process).

  The fourth pattern is a fourth wrapper program for executing a command for performing a termination process (not performing a continuation process), which is a process for copying a specified file to the FD apparatus in the IBM format.

  The fifth pattern is a fifth wrapper program that executes a command for copying a designated file in a non-label format to the CMT apparatus and executing a command that does not perform termination processing (performs continuation processing).

  The sixth pattern is a sixth wrapper program for executing a command for performing a termination process (not performing a continuation process), which is a process for copying a designated file to the CMT apparatus in a non-label format.

  The seventh pattern is a seventh wrapper program that executes a command for performing a process of copying all data in the tape in a non-label format to the CMT apparatus.

  The eighth pattern is an eighth wrapper program for executing a command that does not perform a termination process (performs a continuation process), which is a process for copying a fixed-length designated file in a standard label format to the CMT device. is there.

  The ninth pattern is a ninth wrapper program for executing a command for performing a termination process (not performing a continuation process), which is a process for copying a fixed-length designated file in a standard label format to the CMT device. is there.

  The tenth pattern is a tenth wrapper program that performs a process of copying all fixed-length designated files in the tape to the CMT apparatus in a standard label format.

  The eleventh pattern is an eleventh wrapper program for executing a command that does not perform termination processing (performs continuation processing), which is processing for copying a specified file having a variable length in the standard label format to the CMT device. is there.

  The twelfth pattern is a twelfth wrapper program for executing a command for performing a termination process (no continuation process), which is a process of copying a variable-length designated file in the standard label format to the CMT device. is there.

  The thirteenth pattern is a thirteenth wrapper program that performs processing for copying all variable length designated files in the tape in the standard label format to the CMT apparatus.

  Note that it is not necessary to associate a separate and independent wrapper program for each of the above 13 patterns, and a wrapper program that can switch a plurality of patterns by a parameter such as an input argument may be associated.

  When the execution step does not use the FD device (in the case of “No” in step S101), the using device specifying unit 112 determines whether or not the CMT is specified in the input / output of the execution step (step S105). Specifically, the using device specifying unit 112 specifies whether or not the program called in the execution step corresponds to the condition 123A of the instruction using device correspondence information storage unit 123. Information is acquired to determine whether to use the CMT device. If no CMT device is specified in the execution step, the command analysis unit 111 ends the command analysis processing.

  When the input / output of the execution step has a CMT designation (in the case of “Yes” in step S105), the medium format specifying unit 113 determines whether the input / output of the execution step has a non-label designation ( Step S106). Specifically, in the execution step, the medium format specifying unit 113 specifies whether or not it corresponds to the condition 124A of the format information storage unit 124, and if so, acquires information on the medium format 124B and performs non-labeling. It is determined that there is a non-label designation depending on whether it corresponds to the format. Otherwise, it is determined that there is a standard label designation.

  If there is a non-label designation for the input / output of the execution step (“Yes” in step S106), the instruction analysis unit 111 determines whether both of the input / output of the execution step are CMT (step S107). ). Specifically, the instruction analysis unit 111 determines whether or not the input and output of the execution step are both CMT. If both are CMT, the command analysis unit 111 advances the control to step S104.

  If any of the input / output of the execution step is not CMT (“No” in step S107), the instruction analysis unit 111 identifies whether CMT designation is also performed in the next step of the execution step. (Step S108). Specifically, the instruction analysis unit 111 specifies whether or not a process for performing CMT access is performed in an execution step subsequent to the execution step, and when a process for performing CMT access is performed, the CMT access If it is not implemented, it is specified that CMT access is not continued. Then, the instruction analysis unit 111 advances the control to step S104.

  If there is no non-label designation for the input / output of the execution step (“No” in step S106), the instruction analysis unit 111 identifies whether the file used in the execution step has a fixed length (step S109). . Specifically, the instruction analysis unit 111 reads the information of the file format 125B of the file used in the execution step with reference to the catalog information storage unit 125, and if the read information is “fixed length”, the fixed length To be identified. If not, specify not fixed length.

  Next, the instruction analysis unit 111 determines whether or not the input and output of the execution step are both CMT (step S110). Specifically, the instruction analysis unit 111 determines whether or not the input and output of the execution step are both CMT. If both are CMT, the command analysis unit 111 advances the control to step S104.

  If any of the input / output of the execution step is not CMT (“No” in step S110), the instruction analysis unit 111 identifies whether CMT designation is also performed in the next step of the execution step. (Step S111). Specifically, the instruction analysis unit 111 specifies whether or not a process for performing CMT access is performed in an execution step subsequent to the execution step, and when a process for performing CMT access is performed, the CMT access If it is not implemented, it is specified that CMT access is not continued. Then, the instruction analysis unit 111 advances the control to step S104.

  The above is the process flow of the instruction analysis process. According to the instruction analysis process, when a program such as JCL used in a general-purpose machine is converted into a program such as JCL used in an open system, an instruction to be replaced can be specified.

  The above is the description of the migration system 1 to which the first embodiment according to the present invention is applied. According to the present embodiment, the hardware dependency of the existing hardware-dependent program used in the general-purpose machine can be kept low.

  The present invention is not limited to the first embodiment described above. The first embodiment described above can be variously modified within the scope of the technical idea of the present invention. For example, in the first embodiment described above, an example is shown in which JCL is converted and stored as JCL that can be executed in an open system. However, the present invention is not limited to this, and is converted and executed when JCL is executed. May be. In this way, it is possible to provide a technique that can be executed on demand in an open environment without performing JCL conversion work in advance.

  In the program migration process of this embodiment, the instruction analysis process and the program conversion process are separate steps. However, if the program can be converted in the middle of the instruction analysis process, it is converted as needed. It may be.

  Further, in the program migration process of the present embodiment, the process may be divided into the following five steps. For example, in the first step “investigation of used instructions”, whether the FD device or the CMT device is used from the program name or utility name specified in the JCL with reference to the program use device correspondence information storage unit 122. Judgment is made. In the second step “investigation of device designation”, it is determined with reference to the instruction using device correspondence information storage unit 123 which medium is designated by the description in the JCL. For example, when a utility using a DOS format FD or a utility using an IBM format FD is used in this determination, it is determined that the FD is used.

  Further, in the third step “examine media format”, the format information storage unit 124 is referred to, and the format in the medium specified by the description in the JCL is specified. If a utility that uses the DOS format FD is used in the pre-determination, the DOS format format is used. If a utility that uses the IBM format FD is used, the IBM format FD is used. It is identified as a process.

  In this determination, if the CMT is designated and the non-label format is used, it is determined that the non-label format CMT is used. If there is no such designation, it is determined that the standard label format CMT is used.

  Further, in the fourth process “inspection of processing contents”, the presence / absence of subsequent processing of the next step is checked. For example, when FD replacement is designated, it is determined that there is subsequent processing. In the fifth step “file information check”, the file format used in the FD and CMT processing is specified by searching the catalog table with the file name in the JCL. Through these steps, what processing is specified in the existing JCL is classified.

  If it is determined that the FD device or the CMT device is not used in the above five steps, it is determined that it is not a correction target. Prior to the modification of the existing JCL, a wrapper program is created for each pattern classified by the existing JCL syntax analysis, and the utility is controlled via the wrapper program. The steps in which the FD processing and CMT processing of the existing JCL are described are corrected to call the corresponding wrapper program, and the obtained corrected JCL is used as the server JCL.

  In JCL execution, automatic control of the FD device and the CMT device is realized in the same way as a general-purpose machine through a wrapper program by executing the JCL for each server converted in the previous process.

  Further, the technical elements of the above-described embodiments may be applied independently, or may be applied by being divided into a plurality of parts such as program parts and hardware parts.

  In the first embodiment described above, the FD device 107 and the CMT device 108 are connected to the bus of the program conversion device 100, but the present invention is not limited to this. For example, the FD device 107 and the CMT device 108 may be connected to another device different from the program conversion device 100 via a network or the like. In this case, the wrapper program is a program that controls the FD device 107 and the CMT device 108 by connecting to another device via a network or the like.

  In the above, this invention was demonstrated centering on embodiment.

DESCRIPTION OF SYMBOLS 1 ... Migration system, 100 ... Program conversion apparatus, 110 ... Control part, 111 ... Instruction analysis part, 112 ... Use apparatus specific | specification part, 113 ... Medium format specific part, 114. ..Program conversion unit, 115 ... Program execution control unit, 116 ... External device control unit, 120 ... Storage unit

Claims (10)

An instruction specifying unit for specifying a predetermined instruction for processing to the computer;
A device specifying unit for specifying a device used for processing related to the command;
A data format specifying unit for specifying a format of data to be written to the device in the command;
An end specifying unit for specifying whether or not to perform end processing after writing the data to the device in the command;
An instruction replacement unit that identifies the program to be called according to whether or not to perform the specified process, the format of the data, and the termination process, and replaces the predetermined instruction with an instruction to call the program;
A program conversion apparatus comprising: The program conversion device according to claim 1,
When the device is a CMT device, the data format specifying unit specifies one format among a plurality of formats including a non-label format and a standard label format according to the command.
The program conversion apparatus characterized by the above-mentioned. The program conversion device according to claim 1 or 2,
It has a storage unit that stores catalog information that associates variable length or fixed length formats for each file.
The data format specifying unit specifies, when the device is a CMT device, whether the data is a fixed length or a variable length using the catalog information for a file related to the data.
The program conversion apparatus characterized by the above-mentioned. The program conversion device according to any one of claims 1 to 3,
When the device is an FD device, the data format specifying unit specifies one format among a plurality of formats including a DOS format or an IBM format according to the type of the instruction.
The program conversion apparatus characterized by the above-mentioned. The program conversion device according to any one of claims 1 to 4,
The end specifying unit specifies that the end process is not performed when an instruction to be executed next to the predetermined instruction uses the device.
The program conversion apparatus characterized by the above-mentioned. A program conversion device according to any one of claims 1 to 5,
The predetermined instruction is an instruction written in JCL.
The program conversion apparatus characterized by the above-mentioned. The program conversion device according to any one of claims 1 to 6,
The program to be called is a program for performing control on a storage device according to whether the specified device, the format of the data, or the termination process is performed.
The program conversion apparatus characterized by the above-mentioned. An instruction execution unit for executing predetermined instructions for processing to the computer;
A device specifying unit for specifying a device used for processing related to the command;
A data format specifying unit for specifying a format of data to be written to the device in the command;
An end specifying unit for specifying whether or not to perform end processing after writing the data to the device in the command;
An instruction replacement unit that specifies the device to be identified, a format of the data, a program to be called according to whether or not to perform the termination process, and replaces the predetermined instruction with an instruction to call the program;
The instruction execution unit executes an instruction for calling the program instead of the predetermined instruction.
A program execution device. A program conversion method using a computer,
The computer
An instruction specifying step for specifying a predetermined instruction for processing to the computer;
A device specifying step for specifying a device used for processing related to the command;
A data format specifying step for specifying a format of data to be written to the device in the command;
An end specifying step for specifying whether or not to perform end processing after writing the data to the device in the command;
An instruction replacing step of identifying the program to be called according to whether the specified device, the format of the data, or whether to perform the termination process, and replacing the predetermined instruction with an instruction to call the program;
The program conversion method characterized by implementing. A program that causes a computer to execute a program conversion procedure,
Operating the computer as control means;
For the control means,
An instruction specifying procedure for specifying a predetermined instruction for processing to the computer;
A device specifying procedure for specifying a device to be used for processing related to the command;
A data format specifying procedure for specifying a format of data to be written to the device in the command;
An end specifying procedure for specifying whether or not to perform end processing after writing the data to the device in the command;
An instruction replacement procedure for specifying the device to be called according to whether the specified device, the format of the data, or whether to perform the termination process, and replacing the predetermined instruction with an instruction for calling the program;
A program characterized by having executed.

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