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  1. JDK
  2. JDK-8027364

PSScavenge accounts too large code section to StringTable unlink

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: P5
    • Resolution: Duplicate
    • Affects Version/s: hs25, 8
    • Fix Version/s: 8u20
    • Component/s: hotspot
    • Subcomponent:
      gc

      Backports

        Description

        The scope of the GCTraceTime timer is too large for string table processing for the parallel scavange GC, expanding beyond it.

        I.e. in psScavenge.cpp:
              469 GCTraceTime tm("StringTable", false, false, &_gc_timer);
              470 // Unlink any dead interned Strings and process the remaining live ones.
              471 PSScavengeRootsClosure root_closure(promotion_manager);
              472 StringTable::unlink_or_oops_do(&_is_alive_closure, &root_closure);

        The fix is to put braces around this section.

        Reported with this fix suggestion by J. Manson on the hotspot-dev list (http://mail.openjdk.java.net/pipermail/hotspot-dev/2013-October/011420.html)

        ILW: L (user reported timings are wrong), M (only used with event tracing/JFR enabled), H (no workaround) -> P5

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                Assignee:
                tschatzl Thomas Schatzl
                Reporter:
                tschatzl Thomas Schatzl
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