公开(公告)号：JP2000330805A

公开(公告)日：2000-11-30

申请号：JP2000119943

申请日：2000-04-20

Applicant: IBM

Inventor： JEFFREY D AMAN ,  RAJESH R BORUDAWEKARU ,  MICHAEL WAYNE BROWN ,  DONA NIGAL DEIRENBAAGAA ,  DAVIT B AMES ,  DONALD WILLIAM SCHMIDT ,  SEHORNE MARK ALVIN

IPC: G06F9/46 ,  G06F9/00 ,  G06F9/445 ,  G06F17/00

Abstract: PROBLEM TO BE SOLVED: To obtain a virtual machine which can be used for a long period, reused, and extended by allowing a run-time class, needed to place the virtual machine in operable mode, include a common heap to be loaded, linked, verified, initialized, and compiled. SOLUTION: A read-only part 44 is used to store a code which is not characteristic of an application and a read/write part 46 provides a memory area to be read and written by an application 22 or 24 by using proper lock protection for evading a collision. A dedicated heap 30 can be accessed by only the application 22 and a dedicated heap 36 can be accessed by only the application 24, but the common heap 42 can be accessed by both the applications 22 and 24. A runtime class is loaded and linked to the common heap 42 and the virtual machine can, therefore, use it.