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    ALLOCATION AWARE HEAP FRAGMENTATION METRICS
    2.
    发明专利
    ALLOCATION AWARE HEAP FRAGMENTATION METRICS 未知

    公开(公告)号：CA2832571A1

    公开(公告)日：2015-05-07

    申请号：CA2832571

    申请日：2013-11-07

    Applicant: IBM CANADA

    Inventor： MICIC ALEKSANDAR ,  GRACIE CHARLES ROBERT

    IPC: G06F12/00 ,  G06F11/30 ,  G06F12/02

    Abstract: An illustrative embodiment of a computer-implemented method for estimating heap fragmentation in real time, models a runtime view of free heap memory, models a runtime view of heap allocation patterns for the heap memory and takes a snapshot of the heap memory. A batch allocator simulator is executed at a predetermined event and a remaining amount of memory unused in the simulation is identified as fragmented memory.

    WRITE BARRIER ELISION FOR REFERENCE ARRAYS
    3.
    发明专利
    WRITE BARRIER ELISION FOR REFERENCE ARRAYS 未知

    公开(公告)号：CA2700217C

    公开(公告)日：2011-07-19

    申请号：CA2700217

    申请日：2010-04-01

    Applicant: IBM CANADA

    Inventor： MICIC ALEKSANDAR ,  GRACIE CHARLES R ,  SCIAMPACONE RYAN A

    IPC: G06F9/455

    Abstract: An illustrative embodiment of a computer-implemented process for write barrier elision during program execution receives a request to overwrite a reference, determines whether garbage collection is active and responsive to a determination that garbage collection is active, determines whether a reference object has been scanned. Responsive to a determination that the reference object has not been scanned set a mark bit for the reference object in a modified mark map, scan the reference object and set a scan bit for the reference object in the modified mark map.

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