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7121496: G1: do the per-region evacuation failure handling work in parallel

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Parallelize the removal of self forwarding pointers etc. by wrapping in a HeapRegion closure, which is then wrapped inside an AbstractGangTask.

Reviewed-by: tonyp, iveresov
This commit is contained in:
John Cuthbertson 2011-12-23 11:14:18 -08:00
parent c18293c806
commit 39d61f89a2
5 changed files with 262 additions and 168 deletions
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20
hotspot/src/share/vm/gc_implementation/g1/concurrentMark.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2001, 2012, Oracle and/or its affiliates. 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
@ -3080,19 +3080,6 @@ public:
}
};
class SetClaimValuesInCSetHRClosure: public HeapRegionClosure {
jint _claim_value;
public:
SetClaimValuesInCSetHRClosure(jint claim_value) :
_claim_value(claim_value) { }
bool doHeapRegion(HeapRegion* hr) {
hr->set_claim_value(_claim_value);
return false;
}
};
class G1ParCompleteMarkInCSetTask: public AbstractGangTask {
protected:
G1CollectedHeap* _g1h;
@ -3135,9 +3122,8 @@ void ConcurrentMark::complete_marking_in_collection_set() {
assert(g1h->check_cset_heap_region_claim_values(HeapRegion::CompleteMarkCSetClaimValue), "sanity");
// Now reset the claim values in the regions in the collection set.
SetClaimValuesInCSetHRClosure set_cv_cl(HeapRegion::InitialClaimValue);
g1h->collection_set_iterate(&set_cv_cl);
// Reset the claim values in the regions in the collection set.
g1h->reset_cset_heap_region_claim_values();
assert(g1h->check_cset_heap_region_claim_values(HeapRegion::InitialClaimValue), "sanity");