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  1. JDK
  2. JDK-8151168

G1 mark stack is allocated manually using VirtualSpace methods

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      In G1CMMarkStack::allocate, the mark stack memory is allocated using VirtualSpace memory methods.

      Change this code to use an ArrayAllocator, reducing the code size significantly.

      Also add (optional) pre-touching.

            Unassigned Unassigned
            tschatzl Thomas Schatzl
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