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8075957: Reduce calls to the GC specific object visitors in oopDesc

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Reviewed-by: brutisso, mgerdin, pliden
This commit is contained in:
Stefan Karlsson 2015-03-26 11:28:19 +01:00
parent 602b7d79e9
commit ba1d121fe0
26 changed files with 82 additions and 76 deletions
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12
hotspot/src/share/vm/gc_implementation/parallelScavenge/psCompactionManager.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2005, 2013, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2005, 2015, 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
@ -28,12 +28,11 @@
#include "gc_implementation/parallelScavenge/objectStartArray.hpp"
#include "gc_implementation/parallelScavenge/parMarkBitMap.hpp"
#include "gc_implementation/parallelScavenge/parallelScavengeHeap.hpp"
#include "gc_implementation/parallelScavenge/psCompactionManager.hpp"
#include "gc_implementation/parallelScavenge/psCompactionManager.inline.hpp"
#include "gc_implementation/parallelScavenge/psOldGen.hpp"
#include "gc_implementation/parallelScavenge/psParallelCompact.hpp"
#include "oops/objArrayKlass.inline.hpp"
#include "oops/oop.inline.hpp"
#include "oops/oop.pcgc.inline.hpp"
#include "runtime/atomic.inline.hpp"
#include "utilities/stack.inline.hpp"
@ -180,17 +179,16 @@ void ParCompactionManager::follow_marking_stacks() {
// Drain the overflow stack first, to allow stealing from the marking stack.
oop obj;
while (marking_stack()->pop_overflow(obj)) {
obj->follow_contents(this);
follow_contents(obj);
}
while (marking_stack()->pop_local(obj)) {
obj->follow_contents(this);
follow_contents(obj);
}
// Process ObjArrays one at a time to avoid marking stack bloat.
ObjArrayTask task;
if (_objarray_stack.pop_overflow(task) || _objarray_stack.pop_local(task)) {
ObjArrayKlass* k = (ObjArrayKlass*)task.obj()->klass();
k->oop_follow_contents(this, task.obj(), task.index());
follow_contents((objArrayOop)task.obj(), task.index());
}
} while (!marking_stacks_empty());