Data processing system, computer network, and data processing method

A data processing system which allows a plurality of programs, each designed according to its own version to run concurrently, the data processing system executing processes each corresponding to one of the plurality of programs, said data processing system comprising:

• executing means, provided for each of said plurality of programs, for executing a &a process corresponding to a first of the programs;
• detecting means for detecting an execution point of said first process executed by said executing means;
• notifying means for notifying the internal state data of the first program when an execution point of the first process of the first program detected by said detecting means has reached a pre-defined execution checkpoint;
• testing means for executing an acceptance test which checks the propriety of the first program based on the internal state data of the first program when the execution point of the first process of the first program detected by said detecting means has reached the pre-defined execution checkpoint and which executes an acceptance test which checks the propriety of the programs other than the first program based on internal state data sent from some of the other programs when the execution point has not yet reached the pre-defined execution checkpoint;
• sending/receiving means for sending internal state data of the first program to some programs other than the first program, the execution points of which have not reached the pre-defined execution checkpoint, when the execution point of the first process of the first program detected by said detecting means reaches the pre-defined execution checkpoint and for sending back a result to the corresponding sending program when said testing means executes the acceptance test on one of said programs other than the first program, and, for receiving internal state data when the internal state data is sent from one of said other programs and for receiving a result when the result of an acceptance test on the first program is sent back from one of said other programs;
• judging means for making a general judgment on the first program based on the results of acceptance tests executed in programs other than the first program and on the result of an acceptance test on the first program made by said test means when the number of results of said acceptance tests received by said sending/receiving means for said other programs reaches a specified number;
• and
• interrupt controlling means for interrupting the processing of said executing means either when the result of the general judgment made by said judging means is rejected or when the number of acceptable results of acceptance tests on the programs other than said first program made by said testing means based on the internal state data of said other programs reaches the specified number;
• wherein said executing means does not continue the processing of the first program when the processing is interrupted by said interrupt controlling means, while it otherwise continues the processing of the first program.

A computer network which has a plurality of data processing systems connected by communication lines and each concurrently running a program designed according to its own version, and which executes a process based on at least one of the programs, wherein said data processing system comprises:

• executing means for executing a first process of a first program;
• detecting means for detecting an execution point of said first process of said first program executed by said executing means;
• notifying means for issuing a process execution interrupt instruction to the data processing systems other than the data processing system executing the first program when an execution point of the process of the first program detected by said detecting means has reached a pre-defined execution checkpoint;
• testing means for executing an acceptance test on the data processing system executing the first program based on internal state data of the data processing system notified by said notifying means when the execution point of the first process of the first program detected by said detecting means has reached the pre-defined execution checkpoint or for executing an acceptance test on the data processing systems other then the data processing system executing the first program based on the internal state data of the other data processing systems when the execution point has not yet reached the pre-defined execution checkpoint;
• sending/receiving means for sending internal state data to some of the other data processing systems in which the execution points of the process of the programs executed by executing means of the other data processing systems have not yet reached the pre-defined execution checkpoint when the execution point detected by said detecting means reaches the pre-defined execution checkpoint and for sending back a result to the corresponding sending data processing system when said testing means executes the acceptance test on one of said other data processing systems, and, for receiving internal state data when the internal state data is sent from one of said other data processing systems and for receiving a result when the result of an acceptance test is sent back from one of said other data processing systems;
• judging means for making a general judgment based on the results of acceptance tests executed in the other data processing systems and on the result of the acceptance test on the system executed by said test means when the number of the results of the acceptance tests on the system executed in other systems received by said sending/receiving means from said other data processing systems reaches a specified number;
• and
• interrupt controlling means for interrupting the processing of said executing means either when the result of the general judgment made by said judging means is rejected or when the number of acceptable results of acceptance tests on said other systems made by said testing means reaches a specified number;
• wherein said executing means discontinues the processing of the first program when the processing has been interrupted by said interrupt controlling means, while otherwise continuing the processing of the first program;
• and wherein said data processing system further comprises
• data collecting means for collecting data necessary for said acceptance test executed by said testing means;
• and
• constraint range changing means for changing the constraint range of data collected by said data collecting means,
• wherein said testing means executes said acceptance test based on said data constraint range.