Abstract: An input unit of a compiler accepts a second program called by a first program. A converting unit of the compiler converts the accepted second program into a program in which an initialization instruction and a return instruction are additionally written as instructions executed when an error occurs. An execution control unit of an execution controller executes an execution file having the program where the instructions are additionally written by the compiler in cooperation with a predetermined function group. If an error occurs, an error processing unit of the execution controller initializes a resource based on the initialization instruction described in the program in the execution file having the error, and returns to a caller program based on the return instruction.

Abstract: An input unit of a compiler accepts a second program called by a first program. A converting unit of the compiler converts the accepted second program into a program in which an initialization instruction and a return instruction are additionally written as instructions executed when an error occurs. An execution control unit of an execution controller executes an execution file having the program where the instructions are additionally written by the compiler in cooperation with a predetermined function group. If an error occurs, an error processing unit of the execution controller initializes a resource based on the initialization instruction described in the program in the execution file having the error, and returns to a caller program based on the return instruction.

Abstract: A computer-readable, non-transitory medium storing a program causing a computer to execute a process, the process including: assigning, to a thread, a processing that is specified by a program described with a procedural language and requested by a received processing request; reading out the thread resource stored with being associated with identification information for identifying a session used for communication relating to the processing request, from a storage unit in which identification information for identifying a session and the thread resource are stored with being associated with each other; and executing the processing assigned to the thread by using the read out thread resource.

Abstract: A compiler device comprising a compiler section for generating an object program to be executed through generation of a thread by compiling a source program based on object-oriented programming. An object data detector detects the object data for a method based on the class definition of the source program. An object-code generator incorporates the result of detection in the object data detector into the object program. Further, when executing the object program, the object-code generator incorporates into the object program an exclusive-control instruction for controlling such that only one thread out of a plurality of threads can execute the method according to object-data-retention information.