Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Panasonic Intellectual Property Management Co., Ltd.

Shigenori Doi

Yuko Kubooka

Takakazu Shiomi

Satoru Hayama

Takeshi Hiramoto

Yuko Imanishi

Hiroshi Aoki

When requested by an application, a library unit provides a resource to the application, acquires an ID for identifying the application which has requested the resource, and stores a combination of a resource name of the provided resource and the application ID in a table. When an application is completed, the library unit receives an application ID of the completed application, detects a resource name corresponding to the received application ID in the table, and collects a resource specified by the resource name.

Application execution apparatus and method for managing special threads to notify listeners of resource status changes

When a home appliance equipped with a processor implementing a conventional JVM with a JIT compiler executes uncompiled methods, the execution speed is slower because the methods are compiled at runtime. To suppress the execution speed reduction, a program execution control device judges, on invocation of a method during program execution, whether a method invoked has previously been compiled. If the method is uncompiled, the device executes the method by interpreting associated bytecodes, and also issues a compilation request for the method. If the method is compiled, the device executes native code having been generated by compiling the method. Compilation of a method requested is executed as a separate task from tasks of instruction execution such as interpreter execution or native code execution.

Program execution control device, program execution control method, control program, and recording medium

A garbage collection (GC) system reducing CPU time required for GC without stopping all Application Program threads for an excessive amount of time. The GC system frees memory areas corresponding to objects that are no longer required in an execution procedure of an object-oriented program including a plurality of threads. The GC system includes a selection unit operable to select the threads, an examination unit operable to examine the selected thread by (i) stopping execution of the thread, (ii) finding an object that is accessible from the thread via an object pointer, (iii) managing the found object as a non-freeing target, and (iv) resuming execution of the thread. The GC system also includes a detection unit operable to manage an object identified by the processing target object pointer, as a non-freeing target, and a freeing unit operable to free memory areas corresponding to objects other than the objects that are non-freeing targets.

Garbage collection system

A task management method is provided for preventing a task that can cause a failure in a system from being aborted during a manipulation of the task. A program execution means transmits information on an attribute of a function under execution, and queries about the execution of an abort for a task to which the function belongs. The task execution determination means determines whether the abort should be executed based on the attribute of the function under execution. A task attribute recognition means stores the attribute of the function under execution in a task attribute information storage means, and returns the stored attribute of the function in response to a query about the attribute of the function from the task execution determination means.

Digital device, task management method and program therefor

Application execution apparatus and method

A memory management method in which the memory area can be used efficiently, avoiding the overhead caused by copying to generate Java object. In a memory having a variable address memory area where a Java object to be executed by Java application is stored and relocated by Java virtual machine and a fixed address memory area where data generated by another program is stored, data generated by another program in the fixed address memory area is read out as Java object according to management information for Java application to read the data.

Growing community of inventors

Hiroshima, Japan

Shigenori Doi