JP2822932B2 - Software duplication processor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information processing apparatus, and more particularly to a software duplication processing apparatus which executes a processing program twice, compares the output results of the two, and outputs the result only when they match. .

[0002]

2. Description of the Related Art Conventionally, in order to enhance data integrity of an information processing apparatus, it is common practice to prepare a circuit for error detection in hardware and guarantee the error with the detection circuit. As a method using hardware, there are a multiplexing comparison method in which hardware is multiplexed and the result is compared, a method in which a parity bit is added and detected by a parity detection circuit, and a mixed method thereof. An information processing apparatus called an FTC (Fault Tolerance Computer) guarantees data integrity almost completely with these hardwares, but the amount of hardware increases and the circuit becomes complicated.

In a general information processing apparatus, a detection circuit is partially provided to guarantee data integrity in order to prevent an increase in price due to guaranteeing data integrity for the entire hardware.

[0004]

In particular, recently, there has been a very strong tendency to construct an information processing apparatus at a lower cost by generalizing it including a processing apparatus. At this time, an error can be easily detected between the input / output device for transferring data and the processing device by performing the transfer with the redundant bit added. However, intermittent errors that occur in a processing device that processes information, such as an error in which data changes to another data due to noise on a signal line between an arithmetic unit and a register in the processing device, and an element that constitutes the processing device In order to detect intermittent errors due to lack of margins, etc., there is no other way than to incorporate a complicated combination of detection functions into the processing unit or to duplicate the processing unit. There was a disadvantage of becoming.

The present invention has solved such a conventional problem. The object of the present invention is to repeat data processing twice and compare the results to improve data integrity without increasing the amount of hardware. An object of the present invention is to provide an enhanced software duplication processing device.

As a configuration for repeating the processing by software twice and comparing the results, the same processing is performed by the processing program itself such as an application program.
It is conceivable to add a mechanism for repeatedly comparing the results, but this requires all existing processing programs to be modified. Therefore, another object of the present invention is to provide a software duplication processing device that does not require modification of the processing program itself.

[0007]

In order to achieve the above object, the present invention provides an information processing apparatus having an input device, an output device, a storage device, and a processing device.
At the time of a request to start the processing program, the requested processing program is started, and processing program control information including the number of executions indicating the first execution and the processing program name is created, and the processing program control corresponding to the started processing program is performed. An initial activation unit stored in the information storage unit;
When a data input request is issued from the activated processing program, the processing program control information corresponding to the processing program is referred to, and when the number of executions indicates the first time,
The data input from the input device is notified to the processing program and stored in the input data storage unit of the storage device, and the input ID including the position information of the stored input data and the processing program name is input to the storage device. ID
When the number of executions indicates the second time, the input data stored in the input data storage at the time of the first execution is stored in the corresponding input ID stored in the input ID storage.
D; an input means for reading and notifying the processing program by referring to D; and when a data output request is issued from the started processing program, the processing program control information corresponding to the processing program is referred to, and the number of times of execution is 1 When indicating the number of times, the data output from the processing program is stored in the output data storage unit of the storage device, and the output ID including the position information of the stored output data and the processing program name is output ID of the storage device. An output unit for storing data output from the processing program as output data of the second execution, wherein the output unit outputs the data output from the processing program when the execution count indicates the second execution;
Inputting the output data of the first execution, reading out the first output data stored in the output data storage unit with reference to the corresponding output ID stored in the output ID storage unit,
A comparing unit that compares the read first output data with the second output data input from the output unit, and outputs any one of the output data from the output device only when the output data matches each other; At the end of the program, the processing program control information corresponding to the processing program is referred to, and when the execution count indicates the first time, a re-execution ID including the processing program name is created and the re-execution ID of the storage device is stored. A re-execution ID creating unit that stores the re-execution ID in the storage unit, searches the re-execution ID in the re-execution ID storage unit of the storage device at predetermined time intervals, and starts a processing program having a processing program name in the existing re-execution ID. At the same time, processing program control information including the number of executions indicating the second execution and the processing program name is created, and the processing program corresponding to the started processing program is created. And a re-executing means for storing the ram control information storage unit.

[0008] Further, in order to be able to discriminate and control the same processing program when it is started several times, the processing program control information includes the started processing program at the time of another startup. When the processing program repeats data input and data output a plurality of times, the same data input request as in the first execution is required at the second execution. In order to enable data to be read from the storage device and to allow data output during the second execution to be compared with output data from the same data output request during the first execution, the input ID In addition to data location information, processing program name, processing program classification number, input device name and input request order from the input device Is set, the output ID, position information of the output data, processing program name, in addition to the processing program classification number, the output device name and output request order to the output device is set.

Further, when the present invention is applied to an information processing apparatus in which a storage device is shared by a plurality of processing apparatuses, when a first processing program is executed by a certain processing apparatus, a second execution is performed by another processing apparatus. In order for the processing to be performed by the device, the re-execution ID creating means refers to processing program control information corresponding to the processing program when the processing program ends.
When the number of times of execution indicates the first time, a re-execution ID including the processing unit name indicating the own processing unit (or the processing unit name for performing the second execution) in addition to the processing program name and the processing unit number. Is created and stored in the re-execution ID storage unit of the storage device, and the re-execution unit searches for the re-execution ID in the re-execution ID storage unit of the storage device at regular time intervals and finds the re-execution ID. When the processing device classification number indicates a device other than the own processing device (or indicates the own processing device itself), the processing program of the processing program name in the re-execution ID is started, and the execution indicating the second execution is executed. Processing program control information including the number of times, the processing program name and the processing program classification number in the re-execution ID, and processing program control information corresponding to the started processing program It is to be stored in the paying unit.

[0010]

In an information processing apparatus having a configuration including a single processing device, for example, when a request for starting a certain processing program is issued from a user, the initial starting means starts the processing program, and stores the processing program name and the processing program name. Processing program control information including the number of times of execution indicating the first execution and a processing program classification number is created and stored in a processing program control information storage unit corresponding to the activated processing program.
When there is a data input request from the started processing program, the input means refers to the processing program control information corresponding to the processing program, and the number of executions indicates the first execution. Notifying the processing program and storing it in the input data storage section of the storage device, and also stores the position information of the stored input data, the processing program name, the processing program classification number, the input device name, and the input request order from the input device. The input ID is stored in the input ID storage unit of the storage device. When the processing program performs processing on the input data notified from the input means and issues a data output request because an output result has been obtained, the output means refers to processing program control information corresponding to the processing program, Since the number of executions indicates the first execution, the data output from the processing program is stored in the output data storage unit of the storage device, and the position information of the stored output data, the processing program name, the processing program classification number, the output device The output ID including the name and the output request order to the output device is stored in the output ID storage unit of the storage device.

After that, when the processing program ends, the re-execution ID creating means refers to the processing program control information corresponding to the processing program, and the number of executions indicates the first execution. A re-execution ID including the section number is created and stored in the re-execution ID storage unit of the storage device. The re-execution means searches the re-execution ID in the re-execution ID storage unit of the storage device at regular intervals, and upon detecting the re-execution ID, starts the processing program of the processing program name in the re-execution ID. The processing program control information including the number of executions indicating the second execution, the processing program name and the processing program classification number in the re-execution ID is stored in the processing program control information storage means. Thereby, the second processing is started by the processing program. When a data input request is received from the processing program in the second processing, the input unit refers to the processing program control information corresponding to the processing program, and the number of executions indicates the second execution.
At the same data input request of the second execution, the input data stored in the input data storage is read out with reference to the corresponding input ID stored in the input ID storage to notify the processing program. Next, when a data output request is issued from the processing program, the output means refers to the processing program control information corresponding to the processing program, and the execution number indicates the second time. The data is output to the comparing means as output data of the second execution. Then, the comparing unit reads the first output data stored in the output data storage unit with reference to the corresponding output ID stored in the output ID storage unit, and
The output data of the second time is compared with the second output data input from the output means, and only one of the output data is output from the output device only when they match.

In an information processing apparatus having a configuration including a plurality of processing apparatuses (for example, A and B) sharing a storage device, for example, when a user requests a processing apparatus A to start a certain processing program, The initial activation means of the processing device A activates the processing program on the processing device A, and creates processing program control information including the processing program name, the number of executions indicating the first execution, and the processing program classification number. It is stored in a processing program control information storage unit corresponding to the started processing program. When there is a data input request from the activated processing program, the input means of the processing device A refers to the processing program control information corresponding to the processing program, and the execution count indicates the first execution. The input data is notified to the processing program and stored in the input data storage section of the storage device. The stored input data position information, processing program name, processing program classification number, input device name, and input request from the input device The input ID including the order is stored in the input ID storage unit of the storage device. When the processing program performs a process on the input data notified from the input means and issues a data output request to obtain an output result, the output means of the processing device A executes processing program control information corresponding to the processing program. , The number of executions indicates the first execution, the data output from the processing program is stored in the output data storage unit of the storage device, and the position information, the processing program name, and the processing program classification of the stored output data are stored. An output ID including a number, an output device name, and an output request order to the output device is stored in an output ID storage unit of the storage device.

The above operation is repeated every time a data input request and a data output request are issued from the processing program. After that, when the processing program ends, the re-execution ID creating means of the processing apparatus A executes the processing program. Is referenced by referring to the processing program control information corresponding to
In order to indicate the second execution, in addition to the processing program name and the processing program section number in the processing program control information, a re-execution ID including a processing apparatus section designating a processing apparatus name (B) for performing the second execution Is created and stored in the re-execution ID storage unit of the storage device.

The re-executing means of the processing apparatus A and the processing apparatus B search the re-execution ID storage section on the storage device at regular intervals, and the re-execution I indicating that the processing apparatus classification indicates its own processing apparatus.
If D is detected, the processing program of the processing program name in the re-execution ID is started on its own processing device, the number of executions indicating the second execution, the processing program name and the processing program classification number in the re-execution ID Is created and stored in the processing program control information storage means corresponding to the processing program. Therefore, as described above, the re-execution ID creating means of the processing device A that has completed the first execution of the processing program creates a re-execution ID in which the processing device name (B) is set and stores the re-execution ID in the storage device. When the re-executing unit stores the information, the re-executing unit of the processing device B detects this, and starts the processing program of the processing program name in the re-executing ID unit on its own processing device.

The re-execution ID creating means of the processing device A creates a re-execution ID including a processing device classification specifying the processing device name (A) as the processing device that has performed the first execution, and stores it in the storage device. The processing may be stored, and the re-executing means of each processing apparatus may start the processing program when a re-execution ID indicating that the processing apparatus classification is other than the own processing apparatus exists.

When there is a data input request from the processing program started in the processing device B, the input means of the processing device B refers to the processing program control information corresponding to the processing program, and the number of executions is set to the second time. In order to indicate the execution, at the same data input request of the first execution, the input data stored in the input data storage unit is read out with reference to the corresponding input ID stored in the input ID storage unit and notified to the processing program. When a data output request is issued from the processing program, the output means of the processing device B refers to the processing program control information corresponding to the processing program, and the number of executions indicates the second time. The data is output as output data of the second execution, and the comparing means of the processing device B refers to the first output data stored in the output data storage unit with reference to the corresponding output ID stored in the output ID storage unit. Then, the first output data read out is compared with the second output data input from the output means, and either one of the output data is output from the output device only when they match.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in detail with reference to the drawings.

Referring to FIG. 1, an example of an information processing apparatus to which the present invention is applied includes two processing units 1 and 2, a storage unit 3, an input unit 4, an output unit 5, and a console 6 shared by these two units. It is composed of The storage device 3 is, for example, a main storage device or a magnetic disk device.
Is a keyboard, a magnetic disk device, etc., and the output device 5
Is a printer, a magnetic disk device, or the like.

The processing apparatus 1 and the processing apparatus 2 have the same configuration, and are respectively provided with initial activation means 11 and 21 and processing program control information storage means 12 and 22 and input means 13 and 2.
3, output means 14 and 24, comparison means 15 and 25, re-execution ID creation means 16 and 26, and re-execution means 17 and 27. Reference numerals 18 and 28 denote application programs executed on the processing devices 1 and 2, both of which are programs for performing the same processing.

Each unit 1 on the processing device 1 and the processing device 2
1 to 17 and 21 to 27 have the following functions.

The initial starting means 11 and 21 are connected to the console 6
When there is a start request specifying the processing program name from
As shown in FIG. 2, the processing program requested to be started is started on its own processing device 1 or 2 (S1), processing program control information (hereinafter simply referred to as control information) is created, and the started processing program is started. (S2). FIG. 3 shows an example of the control information created at this time, which is composed of the processing program name of the processing program requested to be activated, the number of times the value 1 is executed, and the processing program classification number. Here, the processing program division number is a number for distinguishing each processing program when the same processing program is executed many times. For example, a date and a count are set. The count is incremented each time the processing program is started once.
Such a counting mechanism is provided, for example, with a counter (not shown) corresponding to each processing program name provided on the storage device 3, and when the initial starting means 11 or 21 starts a certain processing program, the processing program name is used. An arbitrary configuration is conceivable in which the value of the counter corresponding to is acquired and the counter is incremented by +1.

Processing program control information storage means 12, 2
Reference numeral 2 denotes a control information storage area corresponding to the activated processing program on a one-to-one basis. The control information storage area stores control information created by the initial activation units 11 and 21 and control information created by re-execution units 17 and 27 described later. Hold.

The input means 13 and 23 correspond to the processing program 1
This is a means for receiving a data input request from 8, 28. Generally, the processing programs 18 and 28 use an input function when inputting data from the input device 4, but the input means 13 and 23 accept data input requests from the processing programs 18 and 28 instead of the input function. The processing shown in FIG. First, the control information corresponding to the processing programs 18 and 28 for which the data input request has been made is referred from the processing program control information storage means 12 and 22 (S1).
1) If the number of executions in the control information is 1, (S12
Is YES), data is input from the input device 4 (S1).
3) storing the input data in the input data storage 32 of the storage device 3 and storing the input ID in the input ID storage 3
1 and the input data is stored in the processing programs 18 and 2
8 (S14, S15).

FIG. 5 shows an example of an input ID, including a processing program name, a processing program classification number, an input device name, an input request order indicating the number of an input request from the processing program to the input device, and input data. (Input data part position) in the input data storage unit 32 storing the data and the size of the input data (input data part size)
It is composed of With such an input ID, input data in the storage device can be uniquely determined.

On the other hand, if the number of executions in the referenced control information is 2
In the case of (NO in S12), the input means 13 and 23 search for the corresponding input ID from the input ID storage unit 31 of the storage device 3 (S16), and find the position and the input data part in the input ID. The input data is read from the input data storage unit 32 according to the size, and the processing program 18,
28 (S17). Here, the corresponding input ID
In the input ID of FIG. 5, the processing program name and the processing program classification number match those in the control information, the input device name matches the input device name of the current data input request destination, and the input request order is , An input ID that matches the number of input requests issued so far to the input device from the processing program.

The input request order to be added to the input ID can be determined by counting the number of input requests for each input device from the processing programs 18 and 28 in the input means 13 and 23, An arbitrary method such as a method of searching for the maximum value of the input request order of the same input device already stored in the ID storage unit 31 and using the next value can be adopted.

The output means 14 and 24 are connected to the processing units 1 and 2 respectively.
This is a means for receiving a data output request from the processing programs 18 and 28 being executed above. Generally, when the processing programs 18 and 28 output data to the output device 5, an output function is used. However, the output means 14 and 24 receive a data output request from the processing programs 18 and 28 instead of the output function. 6 is performed. First, the control information corresponding to the processing programs 18 and 28 for which the data output was requested is stored in the processing program control information storage unit 12,
22 (S21), and when the number of executions in the control information is 1 (YES in S22), the processing program 1
8 and 28 are stored in the output data storage unit 34 of the storage device 3 and the output ID is output ID.
It is stored in the storage unit 33 (S23).

FIG. 7 shows an example of an output ID, which includes a processing program name, a processing program classification number, an output device name, an output request order indicating an output request from the processing program to the output device, and output data. (Output data section position) in the output data storage section 34 storing the data and the size of the output data (output data section size)
It is composed of With such an output ID, output data in the storage device can be uniquely determined.

As a method of determining the output request order added to the output ID, a method of counting the number of output requests for each output device from the processing programs 18 and 28 in the output means 14 and 24, a method of counting the number of output requests, and the like. An arbitrary method such as a method of searching for the maximum value of the output request order of the same output device already stored in the ID storage unit 33 and using the next value can be adopted.

On the other hand, if the number of executions in the referenced control information is 2
In this case (NO in S22), the output units 14 and 24 output the data output from the processing programs 18 and 28 to the comparison units 15 and 25 of the own processing devices 1 and 2 as output data of the second execution. (S24). At this time, the comparing unit 15, 25 compares the processing program name and the processing program classification number in the control information referred to with the output device name.
Output to

The comparing means 15 and 25 are provided with the processing units 1 and 2
When the processing program name, the processing program classification number, and the output device name are input together with the output data of the second execution from the output units 14 and 24, the corresponding output ID is stored in the output ID storage unit 33 of the storage device 3 as shown in FIG. The output ID is searched (S31), the output data in the first execution is read from the output data storage unit 34 in accordance with the output data portion position and the output data size in the output ID, and the second output from the output means 14 is output. It is compared with the output data of the execution (S32). Here, the corresponding output ID is as shown in FIG.
In the output ID, the processing program name, the processing program classification number, and the output device name match those notified from the output unit 14, and the output request order is changed from the output unit 14 to the second time of the processing program for the output device. An output ID that matches the number of times notified as output data.
As a method of determining the output request order, the comparison means 1
The number of times of notification of output data from the output means 14 and 24 in each of the processing programs and the output devices is counted in each of the processing programs 5 and 25, and the method of using the count value is stored in the output ID storage unit 33. An arbitrary method such as a method of using a value next to the maximum value of the already referred output request order in the output request order is adopted. Note that whether or not the information has already been referred to can be managed by, for example, putting a mark at the time of reference.

If the output data at the time of the first execution matches the output data at the time of the second execution (YES in S33), the comparing means 15, 25 outputs one of the output data. Output to the output device 5 (S34). On the other hand,
If they do not match, the comparing means 15 and 25 suspend the processing programs 18 and 28 on their own processing devices 1 and 2 (S
35), the processing program 18,
A message to the effect that step 28 has been interrupted is output to the console 6 (S36). At this time, an error flag (not shown) is added to the control information in the processing program control information storage unit 12 including the processing program name and the processing program classification number notified from the output units 14 and 24, and described later. The re-executing means 17 can recognize the error.

At the end of the execution of the processing programs 18 and 28 on the own processing devices 1 and 2, the re-execution ID creating means 16 and 26 refer to the control information corresponding to the processing programs as shown in FIG. (S41) If the number of executions in the control information is 1, (YES in S42), a re-execution ID is created and stored in the re-execution ID storage unit 35 of the storage device 3 (S43). FIG. 10 shows an example of the re-execution ID, which is composed of a processing unit classification designating a processing unit name for performing the second execution, a processing program name, and a processing program classification number. When the number of executions in the control information is 2 (NO in S42), it is checked whether or not an error flag is added to the control information by the comparing means 15 and 25 (S44). (YES in S44), all input IDs and output IDs including the processing program name and the processing program classification number in the control information
Then, the input data and output data corresponding thereto are deleted from the input ID storage unit 31, the output ID storage unit 33, the input data storage unit 32, and the output data storage unit 34 of the storage device 3 (S45). On the other hand, when the error flag is added (NO in S44), the process S45 is skipped.

The re-execution means 17 and 27
For example, it is automatically started every minute,
The processing shown in is performed. First, the re-execution ID of the storage device 3
One re-execution ID is searched from the storage unit 35 (S5).
1). Then, if found (YES in S52), if the processing device category in the re-execution ID indicates the own processing device name (YES in S53), the processing program of the processing program name in the re-execution ID is copied to the own processing device. 1 and 2 (S54), and creates control information including a copy of the processing program name and the processing program classification number in the re-execution ID and the number of executions of the value 2, and stores the processing program control information storage means 12, 22 and deletes the re-execution ID (S55). Then, the next re-execution ID is searched from the re-execution ID section 35 (S56), and if found, the same processing as described above is repeated. When the above process is completed for all re-execution ID units existing in the re-execution ID unit 35 (S52)
NO), the current process ends.

The re-execution ID creating means 16 and 26
The own processing device name is set in the processing device category in the re-execution ID, and the re-executing means 17 and 27 execute the re-execution ID in which the processing device name other than the own processing device is set in the processing device category.
May be started when the processing is detected.

Next, the operation of the embodiment constructed as described above will be described. For convenience of explanation, the processing program 1
8 and 28, the data ID1 is input from the input device 4 and processed, the data OD1 indicating the result is output to the output device 5, and then the data ID2 is input from the input device 4 and processed. Is output to the output device 5. It is also assumed that a command for activating the processing program 18 in response to a command from the console 6 has been given to the initial activation unit 11 of the processing device 1. Further, the name of the processing programs 18 and 28 is X.

When the activation of the processing program 18 is requested, the initial activation means 11 of the processing apparatus 1 activates the processing program 18 on the processing apparatus 1 (S1 in FIG. 2), and the number of executions =
1, control information composed of a processing program name = X and a processing program division number (P) is created.
As shown in FIG. 2, the information is stored in the processing program control information storage unit 12 corresponding to the processing program 18 (S2).

When the execution of the processing program 18 is started and a data input request from the input device 4 is issued, the data input request is accepted by the input means 13. The input means 13 refers to the control information shown in FIG. 12 stored in the processing program control information storage means 12 corresponding to the processing program 18 (S11 in FIG. 4). Input data ID1 (S13),
This input data ID1 is stored in the storage device 3 as shown in FIG.
12 is stored in the input data storage unit 32 of FIG.
An input ID as shown in FIG.
(S14). Then, the input data ID1
Is notified to the processing program 18 (S15).

The processing program 18 performs processing by inputting the input data ID1 notified from the input means 13 and issues a data output request to output the output data OD1 to the output device 5, and the output means 14 of the processing device 1 This data output request is accepted. The output means 14 includes a processing program 18
1 in the processing program control information storage unit 12 corresponding to FIG.
Referring to the control information shown in FIG. 2 (S21 in FIG. 6), since the number of executions is 1, the output data OD1 from the processing program 18 is stored in the output data storage unit 34 of the storage device 3 as shown in FIG. At the same time, an output ID 331 as shown in FIG. 12 is created and stored in the output ID storage unit 33 (S23).

Thereafter, when the processing program 18 issues a data input request from the input device 4 again, the input means 13
Refers to the control information shown in FIG. 12 stored in the processing program control information storage means 12 (S11 in FIG. 4). Since the number of executions is 1, the data ID 2 is input from the input device 4 (S13). This input data ID2 is stored in the input data storage unit 32 of the storage device 3 as shown in FIG. 12, and an input ID as shown by 312 in FIG. 12 is created and stored in the input ID storage unit 31 (S14). Then, the input data ID2 is notified to the processing program 18 (S15).

The processing program 18 performs processing by inputting the input data ID2 notified from the input means 13 and issues a data output request to output the output data OD2 to the output device 5. Referring to the control information shown in FIG. 12 in the information storage unit 12 (S in FIG. 6)
21) Since the number of executions is 1, the processing program 18
12 is stored in the output data storage unit 34 of the storage device 3 as shown in FIG. 12, and the output ID 332 as shown in FIG.
3 (S23).

Thereafter, when the processing program 18 ends, the re-execution ID creating means 16 of the processing device 1 refers to the control information shown in FIG. 12 stored in the processing program control information storage means 12 corresponding to the processing program 18. Since the number of executions is 1, a re-execution ID of the processing unit classification = processing unit 2, processing program name = X, processing program classification number = P is created as shown in FIG.
(S43 in FIG. 9).

The re-execution means 17 and 27 of the processing device 1 and the processing device 2 search the re-execution ID storage section 35 at regular intervals, and when the processing device classification detects the re-execution ID indicating its own processing device. In addition to activating the processing program of the processing program name in the re-execution ID, processing program control information including the processing program name, the processing program classification number, and the number of times of execution indicating the second execution is created. Accordingly, as described above, the re-execution ID creating means 16 of the processing device 1 that has finished executing the processing program 18 creates a re-execution ID in which the name of the processing device 2 is set and executes the re-execution I
When stored in the D storage unit 35, the re-executing means 27 of the processing device 2 detects this, and activates the processing program 28 of the processing program name in the re-execution ID on its own processing device 2 (S54 in FIG. 11). 12), creates control information as shown in FIG. 12, and stores it in the processing program control information storage means 22 corresponding to the processing program 28 (S55). At this time, the re-execution ID is deleted.

The execution of the processing program 28 started in the processing device 2 is started, and the data (I
When a request to input D1) is issued, the input means 23 of the processing device 2 refers to the control information as shown in FIG. 12 stored in the processing program control information storage means 22 corresponding to the processing program 28 (S11). Since the number of executions is 2, the input data ID1 stored in the input data storage unit 32 at the same data input request of the first execution is
With reference to the input ID 311 searched from the D storage unit 31, the data is read and notified to the processing program 28 (S16,
S17).

Next, when the processing program 28 inputs and processes the input data ID 1 and issues an output request of the data OD 1 to the output device 5, the output means 24 of the processing device 2
Refers to the control information as shown in FIG. 12 stored in the processing program control information storage means 22 corresponding to the processing program 28 (S21). Since the execution count indicates 2, the data output from the processing program 28 OD1 is output to the comparing means 25 as output data of the second execution (S
24). At the same time, the comparing means 25 compares the name of the processing program 18, the processing program classification number, and the output device name.
Output to

The comparing means 25 reads out the first output data OD1 stored in the output data storage section 34 with reference to the output ID 331 searched out from the output ID storage section 33 (S31, S32), and reads the output data OD1. The output data OD1 at the time of the first execution is compared with the output data OD1 at the time of the second execution outputted by the output means 24 (S32), and the output data OD1 is output to the output device 5 only when they match (S32). S34). If they do not match, the processing program 28 is interrupted (S35), and a message to that effect is output to the console 6 (S36).

When the processing program 28 continues processing without interruption and issues a request to input data again from the input device 4, the input means 23 stores the data in the processing program control information storage means 12 corresponding to the processing program 28. Fig. 1
2 is referred to (S11). Since the number of executions is 2, the input data ID2 stored in the input data storage unit 32 at the same data input request of the first execution is input.
Is searched from the input ID storage unit 31 for the input ID 31
2 and read it out and notify the processing program 28 (S16, S17).

Next, the processing program 28 inputs and processes the input data ID2, and outputs the data OD2 to the output device 5.
Is output, the output means 24 outputs the processing program control information storage means 2 corresponding to the processing program 28.
12 (S21) and the number of executions indicates 2, the data OD2 output from the processing program 28 is output to the comparing means 25 as output data of the second execution. Output (S24). At the same time, the name of the processing program 18, the processing program section number, and the output device name are output to the comparing means 25.

The comparing means 15 reads out the first output data OD2 stored in the output data storage section 34 with reference to the output ID 332 searched out of the output ID storage section 33 (S31, S32), and reads out this. The output data OD2 at the time of the first execution and the output data OD2 at the time of the second execution outputted by the output means 24 are compared (S32), and the output data OD2 is output to the output device 5 only when they match (S32). S34). If they do not match, the processing program 28 is interrupted (S35), and a message to that effect is output to the console 6 (S36).

When the execution of the processing program 28 is completed without interruption, the re-execution ID creating means 26
Referring to the control information as shown in FIG. 12 stored in the processing program control information storage means 22 corresponding to the processing program 28 (S41), the number of executions is 2 and no comparison error has occurred. Input ID 31 shown in
1, 312, input data ID1, ID2, output ID33
1, 332, all output data OD1, OD2 are erased. If a comparison error has occurred, these are left without being erased, so that they can be used to determine the cause of the abnormality.

In the above embodiment, the processing program division number is added to the processing program control information. However, the processing programs having the same name are not operated in parallel, and the relevant input ID, If the output ID, input data, and output data are all deleted from the storage device 3, the processing program section number can be omitted. Further, the present invention is applied to an information processing apparatus having two processing apparatuses, but is also applicable to an information processing apparatus in which three or more processing apparatuses share a storage device.

Further, the present invention can be applied to an information processing apparatus having only one processing apparatus. In this case, the re-execution ID of the own processing device detects the re-execution ID created by the re-execution ID creation unit of the own processing device, and the same processing program is restarted. In this case, the processing device classification in the re-execution ID can be omitted.

[0053]

As described above, according to the present invention, the processing program is executed twice, the respective output data are compared, and the output data is output from the output device only when they match. , Without the use of specialized hardware and without increasing the amount of hardware,
Further, data integrity can be guaranteed without making any modification to the processing program itself.

Also, in a configuration in which the storage device is applied to an information processing device shared by a plurality of processing devices, the first execution and the second execution of the processing program can be performed by different processing devices. The data integrity can be further improved while distributing the load of the processing device.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating an example of an information processing apparatus to which the present invention has been applied.

FIG. 2 is a flowchart illustrating a processing example of an initial activation unit.

FIG. 3 is a diagram showing an example of processing program control information.

FIG. 4 is a flowchart illustrating a processing example of an input unit.

FIG. 5 is a diagram illustrating an example of an input ID.

FIG. 6 is a flowchart illustrating a processing example of an output unit.

FIG. 7 is a diagram illustrating an example of an output ID.

FIG. 8 is a flowchart illustrating a processing example of a comparing unit.

FIG. 9 is a flowchart illustrating a processing example of a re-execution ID creating unit.

FIG. 10 illustrates an example of a re-execution ID.

FIG. 11 is a flowchart illustrating a processing example of a re-execution unit.

FIG. 12 shows processing program control information, input ID, and output I.
FIG. 9 is an explanatory diagram showing a relationship among D, input data, output data, and re-execution ID.

[Explanation of symbols]

 1, 2, processing device 3, storage device 4, input device 5, output device 6, console 11, 21, initial startup means 12, 22, processing program control information storage means 13, 23, input means 14, 24, output means 15, 25 ... Comparison means 16, 26 ... Re-execution ID creation means 17, 27 ... Re-execution means 31 ... Input ID storage unit 32 ... Input data storage unit 33 ... Output ID storage unit 34 ... Output data storage unit 35 ... Re-execution ID storage

Claims (4)

(57) [Claims] 1. An information processing apparatus having an input device, an output device, a storage device, and a processing device, wherein when the processing device is requested to start the processing program, the requested processing program is started and the first execution is performed. Initial activation means for creating processing program control information including the execution count and the processing program name indicating the number of executions and storing the processing program control information in the processing program control information storage means corresponding to the activated processing program; and a data input request from the activated processing program. If there is, refer to the processing program control information corresponding to the processing program, and when the number of executions indicates the first time,
The data input from the input device is notified to the processing program and stored in the input data storage unit of the storage device, and the input ID including the position information of the stored input data and the processing program name is input to the storage device. ID
When the number of executions indicates the second time, the input data stored in the input data storage at the time of the first execution is stored in the corresponding input ID stored in the input ID storage.
D; an input means for reading and referring to the processing program; and when a data output request is issued from the activated processing program, the processing program refers to the processing program control information corresponding to the processing program, and the number of times of execution is 1 When indicating the second time,
The data output from the processing program is stored in an output data storage unit of the storage device, and the output I including the position information of the stored output data and the processing program name
An output unit that stores D in the output ID storage unit of the storage device and, when the number of executions indicates the second execution, outputs data output from the processing program as output data of the second execution; The output data of the second execution is input from the output unit, and the first output data stored in the output data storage unit is output to the corresponding output I stored in the output ID storage unit.
D, the first output data read out is compared with the second output data input from the output means, and only when one of them matches, one of the output data is output from the output device. When the processing program ends, the processing program refers to the processing program control information corresponding to the processing program, and when the execution count indicates the first time, a re-execution ID including the processing program name is created. A re-execution ID creating unit that stores the re-execution ID in the re-execution ID storage unit of the storage device; Name of the processing program, and also generates processing program control information including the number of executions indicating the second execution and the processing program name, and executes the started processing program. Software duplication processing apparatus, characterized in that it comprises a re-executing means for storing the processing program control information storage means corresponding to the ram. 2. An information processing apparatus having an input device, an output device, a storage device, and a processing device, wherein when the processing device is requested to start the processing program, the requested processing program is started and the first execution is performed. Number of executions indicating
Processing corresponding to the activated processing program by creating processing program control information including a processing program name and a processing program classification number for distinguishing the processing program from other ones when the processing program is activated many times An initial activation unit stored in the program control information storage unit; and a data input request from the activated processing program, the processing program control information corresponding to the processing program is referred to, and the number of executions indicates the first time. Is
The data input from the input device is notified to the processing program and stored in the input data storage unit of the storage device, and the stored input data position information, processing program name, processing program classification number, input device name, and An input ID including an input request order from the input device is stored in an input ID storage unit of the storage device, and when the number of executions indicates the second time, the input data storage unit is used at the same data input request of the first execution. Input means for reading out the input data stored in the input ID referring to the corresponding input ID stored in the input ID storage unit and notifying the processing program, and when there is a data output request from the activated processing program, Referring to the processing program control information corresponding to the processing program, and when the number of executions indicates the first time,
The data output from the processing program is stored in an output data storage unit of the storage device, and the position information of the stored output data, the processing program name, the processing program classification number, the output device name, and the output request to the output device The output ID including the order is stored in the output ID storage unit of the storage device, and when the number of executions indicates the second execution, the data output from the processing program is output as the output data of the second execution. Means for inputting the output data of the second execution from the output means, and outputting the corresponding output data of the first execution stored in the output data storage section to the corresponding output stored in the output ID storage section. Read with reference to the ID, the read 1
Comparing means for comparing the second output data with the second output data input from the output means and outputting any one of the output data from the output device only when the output data coincides with each other; And referring to the processing program control information corresponding to the processing program, and when the number of executions indicates the first time, creates a re-execution ID including the processing program name and the processing program classification number and re-executes the storage device. A re-execution ID creating unit that stores the re-execution ID in the re-execution ID storage unit of the storage device, and searches the re-execution ID in the re-execution ID storage unit at regular time intervals, and starts a processing program of the processing program name in the existing re-execution ID. And a processing program control including the number of executions indicating the second execution, the processing program name and the processing program classification number in the re-execution ID. Software duplication processing apparatus, characterized in that to create a distribution and a re-executing means for storing the processing program control information storage means corresponding to the processing program the activation. 3. An information processing apparatus having an input device, an output device, a storage device, and a plurality of processing devices sharing the storage device, wherein each of the processing devices requests processing when a processing program activation request is issued. When the program is started, the number of executions indicating the first execution,
Processing corresponding to the activated processing program by creating processing program control information including a processing program name and a processing program classification number for distinguishing the processing program from other ones when the processing program is activated many times An initial activation unit stored in the program control information storage unit; and a data input request from the activated processing program, the processing program control information corresponding to the processing program is referred to, and the number of executions indicates the first time. Is
The data input from the input device is notified to the processing program and stored in the input data storage unit of the storage device, and the stored input data position information, processing program name, processing program classification number, input device name, and An input ID including an input request order from the input device is stored in an input ID storage unit of the storage device, and when the number of executions indicates the second time, the input data storage unit is used at the same data input request of the first execution. Input means for reading out the input data stored in the input ID referring to the corresponding input ID stored in the input ID storage unit and notifying the processing program, and when there is a data output request from the activated processing program, Referring to the processing program control information corresponding to the processing program, and when the number of executions indicates the first time,
The data output from the processing program is stored in an output data storage unit of the storage device, and the position information of the stored output data, the processing program name, the processing program classification number, the output device name, and the output request to the output device The output ID including the order is stored in the output ID storage unit of the storage device, and when the number of executions indicates the second execution, the data output from the processing program is output as the output data of the second execution. Means for inputting the output data of the second execution from the output means, and outputting the corresponding output data of the first execution stored in the output data storage section to the corresponding output stored in the output ID storage section. Read with reference to the ID, the read 1
Comparing means for comparing the second output data with the second output data input from the output means and outputting any one of the output data from the output device only when the output data coincides with each other; And referring to the processing program control information corresponding to the processing program, when the number of executions indicates the first time, a re-execution ID including the processing program name, the processing program classification number, and the processing apparatus classification number indicating the own processing apparatus A re-execution ID creating means for creating a re-execution ID in the re-execution ID storage unit of the storage device, and searching for the re-execution ID in the re-execution ID storage unit of the storage device at regular intervals, and presenting the existing re-execution ID If the processing unit classification number in the table indicates a device other than the own processing unit, the re-execution ID
In addition to starting the processing program with the processing program name in the middle, the processing program control information including the number of executions indicating the second execution, the processing program name and the processing program classification number in the re-execution ID is created, and the started processing is executed. And a re-execution unit for storing the program in a processing program control information storage unit corresponding to the program. 4. An information processing apparatus having an input device, an output device, a storage device, and a plurality of processing devices sharing the storage device, wherein each of the processing devices performs processing requested when a processing program activation request is issued. When the program is started, the number of executions indicating the first execution,
Processing corresponding to the activated processing program by creating processing program control information including a processing program name and a processing program classification number for distinguishing the processing program from other ones when the processing program is activated many times An initial activation unit stored in the program control information storage unit; and a data input request from the activated processing program, the processing program control information corresponding to the processing program is referred to, and the number of executions indicates the first time. Is
The data input from the input device is notified to the processing program and stored in the input data storage unit of the storage device, and the stored input data position information, processing program name, processing program classification number, input device name, and An input ID including an input request order from the input device is stored in an input ID storage unit of the storage device, and when the number of executions indicates the second time, the input data storage unit is used at the same data input request of the first execution. Input means for reading out the input data stored in the input ID referring to the corresponding input ID stored in the input ID storage unit and notifying the processing program, and when there is a data output request from the activated processing program, Referring to the processing program control information corresponding to the processing program, and when the number of executions indicates the first time,
The data output from the processing program is stored in an output data storage unit of the storage device, and the position information of the stored output data, the processing program name, the processing program classification number, the output device name, and the output request to the output device The output ID including the order is stored in the output ID storage unit of the storage device, and when the number of executions indicates the second execution, the data output from the processing program is output as the output data of the second execution. Means for inputting the output data of the second execution from the output means, and outputting the corresponding output data of the first execution stored in the output data storage section to the corresponding output stored in the output ID storage section. Read with reference to the ID, the read 1
Comparing means for comparing the second output data with the second output data input from the output means and outputting any one of the output data from the output device only when the output data coincides with each other; The processing program control information corresponding to the processing program is referred to, and when the number of executions indicates the first time, the processing program name, the processing program classification number, and the processing apparatus classification indicating the processing apparatus to be executed for the second time A re-execution ID including a re-execution ID including a number and storing the re-execution ID in a re-execution ID storage unit of the storage device
Creating means, and searching for the re-execution ID in the re-execution ID storage section of the storage device at regular intervals, and when the processing unit classification number in the existing re-execution ID indicates its own processing device, the re-execution ID Start the processing program of the processing program name in the
Processing program control information including the number of executions indicating the second execution, the processing program name in the re-execution ID, and the processing program classification number is created and stored in the processing program control information storage means corresponding to the started processing program. A software duplication processing device comprising re-execution means.