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6819061: G1: eliminate serial Other times that are proportional to the collection set length

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6871109: G1: remove the concept of the scan only prefix

Removed scan only regions and associated code. The young portion of the collection set is now constructed incrementally - when a young region is retired as the current allocation region it is added to the collection set.

Reviewed-by: apetrusenko, iveresov, tonyp
This commit is contained in:
John Cuthbertson 2010-04-22 10:02:38 -07:00
parent db6aad1e4e
commit b1867e0dd5
12 changed files with 895 additions and 1013 deletions
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4
hotspot/src/share/vm/services/g1MemoryPool.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2007 Sun Microsystems, Inc. All Rights Reserved.
* Copyright 2007-2010 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -45,7 +45,7 @@ size_t G1MemoryPoolSuper::eden_space_committed(G1CollectedHeap* g1h) {
// See the comment at the top of g1MemoryPool.hpp
size_t G1MemoryPoolSuper::eden_space_used(G1CollectedHeap* g1h) {
size_t young_list_length = g1h->young_list_length();
size_t young_list_length = g1h->young_list()->length();
size_t eden_used = young_list_length * HeapRegion::GrainBytes;
size_t survivor_used = survivor_space_used(g1h);
eden_used = subtract_up_to_zero(eden_used, survivor_used);