Hitachi Software Engineering Company, Ltd.

Tatsuo Isobe

Akira Ioku

Minoru Koizumi

Koji Doi

Yoshiaki Morimoto

Motoaki Satoyama

Shinichiro Kawasaki

Power consumption can be suppressed while maintaining an appropriate execution speed. The information processor has an interpreter for interpreting a source program or intermediate language program and a run-time translator for translating the program into a machine language program native to the computer. The information processor comprises a power-saving request monitor for monitoring whether or not there is a power-saving request from an input interface or a predetermined power-saving request in a given memory, and a power-saving translation controller. The power-saving request makes a request for suppression of the power consumed by the processor. The power-saving translation controller makes a decision as to whether the run-time translator executes run-time translation of the program according to whether there is the power-saving request. Based on the result of the decision, the translation controller instructs the run-time translator to execute the run-time translation.

Information processor, information processing method, and programs therefor

In a method for testing a program, repeated measurement on branches that are frequently taken is prevented, thereby avoiding unnecessary overhead. An information processing device includes a coverage measurement control program for determining whether the number of times an instruction of a measurement target program has been executed due to execution of the measurement target program is equal to or larger than the maximum allowable number of measurements set for the instruction; and a coverage measurement program for incrementing a value in a field for the instruction by one to indicate the number of times the instruction has been executed, the coverage measurement program being called if the number of times the instruction has been executed is smaller than the maximum allowable number of measurements.

Suppressing execution of monitoring measurement program pointed to by inserted branch after threshold number of coverage to reduce instruction testing overhead

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Yokohama, Japan

Tatsuo Isobe