Comment #2 on issue 1467 by [email protected]: NewGC: Port to Windows
http://code.google.com/p/v8/issues/detail?id=1467
VirtualMemory::ReleaseRegion is implemented as VirtualFree(base, size,
MEM_DECOMMIT) on Windows.
This means we never actually return any virtual memory to the OS.
We should use MEM_RELEASE to return virtual memory back to OS. This
requires certain redesign of MemoryAllocator, because it has keep track of
the base pointer returned by VirtualAlloc to properly release it later.
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