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Object state transfer method, object state transfer device, object state transfer program, and recording medium for the program

  • US 8,037,478 B2
  • Filed: 04/21/2008
  • Issued: 10/11/2011
  • Est. Priority Date: 08/14/2002
  • Status: Expired due to Fees
First Claim
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1. An object state transfer method in a data processing device comprising an application program, and a plurality of objects having internal states, which can be manipulated from the application program, comprising the steps of:

  • determining whether an object is shared among a plurality of data processing devices;

    when the object is shared among the plurality of data processing devices, storing the object as a shared object in a shared heap region;

    when the object is not shared among the plurality of data processing devices, storing the object in a heap region;

    transferring the states of shared objects to another data processing device by transmitting the shared heap region in unaltered form to the other data processing device,specifying beforehand a class to be transferred to the other data processing device as a transfer class;

    when a command to create a new object has been issued by the application program, determining whether a class to be created, specified by the application program, is contained in the transfer class;

    when the class to be created is not contained in the transfer class, creating a new object in the heap region; and

    when the class to be created is contained in the transfer class, creating a new shared object in the shared heap region.

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