Abstract: In response to a selection of a program, a board image display control section sets program related information associated with the selected program in a displayable state. An execution start managing section starts the program in response to reception of a request to start the program, the program related information associated with the program being set in the displayable state. A stop and end managing section ends an already started program when a given condition is satisfied at a time of starting the program by the execution start managing section. A setting of program related information associated with the ended program is maintained in a displayable state even after the program is ended by the stop and end managing section.

Abstract: For a thread where data is to be popped off of queue storage, whether or not there is data that can be popped out of the queue storage accessed is first checked and then the data, if any, is popped. When there is no such data, the thread pushes thread information, including the identification information of its own thread, on the same queue and then releases a processor and shifts to a standby state. For a thread that is to push the data, when there is the thread information in the queue, it is determined that there is a thread waiting for the data, and then the data is sent after the thread information has been popped, which in turn resumes the processing.

Abstract: To be able to change settings for selective changing control of a program as a target for sound input/output flexibly. A background music (BGM) sound selection managing section obtains priority values set to a plurality of programs, respectively. The BGM sound selection managing section performs control such that a program selected from among the plurality of programs on a basis of the obtained priority values becomes a target for selective sound input/output from/to an outside.

Abstract: In response to a selection of a program, a board image display control section sets program related information associated with the selected program in a displayable state. An execution start managing section starts the program in response to reception of a request to start the program, the program related information associated with the program being set in the displayable state. A stop and end managing section ends an already started program when a given condition is satisfied at a time of starting the program by the execution start managing section. A setting of program related information associated with the ended program is maintained in a displayable state even after the program is ended by the stop and end managing section.

Abstract: To be able to change settings for selective changing control of a program as a target for sound input/output flexibly. A BGM sound selection managing section obtains priority values set to a plurality of programs, respectively. The BGM sound selection managing section performs control such that a program selected from among the plurality of programs on a basis of the obtained priority values becomes a target for selective sound input/output from/to an outside.

Abstract: For a thread where data is to be popped off of queue storage, whether or not there is data that can be popped out of the queue storage accessed is first checked and then the data, if any, is popped. When there is no such data, the thread pushes thread information, including the identification information of its own thread, on the same queue and then releases a processor and shifts to a standby state. For a thread that is to push the data, when there is the thread information in the queue, it is determined that there is a thread waiting for the data, and then the data is sent after the thread information has been popped, which in turn resumes the processing.

Abstract: A virtual space management system includes: a plurality of space management servers for respectively managing a plurality of partial spaces obtained by dividing a virtual space; and a communication control server for relaying communication between at least one of the plurality of space management servers and a user terminal. Each space management server executes a process relating to a transition in which a position in the virtual space associated with the user terminal transitions from inside a partial space managed by another space management server to inside a partial space managed by the local space management server. The communication control server maintains communication connection with the user terminal during execution of the process relating to the transition, and changes a transmission destination of data received from the user terminal to the local space management server managing the partial space to which the transition has been made according to the transition.

Abstract: A distributed processing system includes plural nodes each provided with a processor and communicably connected to each other. A task information obtaining unit obtains antecedent dependency between tasks. A node information obtaining unit obtains a time constraint imposed on the tasks. A start time computing unit computes an absolute earliest start time at which a task can be started and an absolute latest start time allowed in order to complete the task within the time constraint, by referring to the time constraint. A node selector selects a destination node to which a target task not yet allocated to a node should be allocated, by referring to the absolute earliest start time and the absolute latest start time. A task placement unit causes the task to be executed in the selected node.

Abstract: A virtual space management system includes: a plurality of space management servers for respectively managing a plurality of partial spaces obtained by dividing a virtual space; and a communication control server for relaying communication between at least one of the plurality of space management servers and a user terminal. Each space management server executes a process relating to a transition in which a position in the virtual space associated with the user terminal transitions from inside a partial space managed by another space management server to inside a partial space managed by the local space management server. The communication control server maintains communication connection with the user terminal during execution of the process relating to the transition, and changes a transmission destination of data received from the user terminal to the local space management server managing the partial space to which the transition has been made according to the transition.

Abstract: A distributed processing system includes plural nodes each provided with a processor and communicably connected to each other. A task information obtaining unit obtains antecedent dependency between tasks. A node information obtaining unit obtains a time constraint imposed on the tasks. A start time computing unit computes an absolute earliest start time at which a task can be started and an absolute latest start time allowed in order to complete the task within the time constraint, by referring to the time constraint. A node selector selects a destination node to which a target task not yet allocated to a node should be allocated, by referring to the absolute earliest start time and the absolute latest start time. A task placement unit causes the task to be executed in the selected node.