Mercurial > hg > graal-compiler
view src/share/vm/runtime/stackValueCollection.hpp @ 2149:7e37af9d69ef
7011379: G1: overly long concurrent marking cycles
Summary: This changeset introduces filtering of SATB buffers at the point when they are about to be enqueued. If this filtering clears enough entries on each buffer, the buffer can then be re-used and not enqueued. This cuts down the number of SATB buffers that need to be processed by the concurrent marking threads.
Reviewed-by: johnc, ysr
author | tonyp |
---|---|
date | Wed, 19 Jan 2011 09:35:17 -0500 |
parents | f95d63e2154a |
children |
line wrap: on
line source
/* * Copyright (c) 2001, 2010, 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 * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #ifndef SHARE_VM_RUNTIME_STACKVALUECOLLECTION_HPP #define SHARE_VM_RUNTIME_STACKVALUECOLLECTION_HPP #include "memory/allocation.hpp" #include "runtime/stackValue.hpp" #include "utilities/growableArray.hpp" class StackValueCollection : public ResourceObj { private: GrowableArray<StackValue*>* _values; public: StackValueCollection() { _values = new GrowableArray<StackValue*>(); } StackValueCollection(int length) { _values = new GrowableArray<StackValue*>(length); } void add(StackValue *val) const { _values->push(val); } int size() const { return _values->length(); } bool is_empty() const { return (size() == 0); } StackValue* at(int i) const { return _values->at(i); } // Get typed locals/expressions jint int_at(int slot) const; jlong long_at(int slot) const; Handle obj_at(int slot) const; jfloat float_at(int slot) const; jdouble double_at(int slot) const; // Set typed locals/expressions void set_int_at(int slot, jint value); void set_long_at(int slot, jlong value); void set_obj_at(int slot, Handle value); void set_float_at(int slot, jfloat value); void set_double_at(int slot, jdouble value); void print(); }; #endif // SHARE_VM_RUNTIME_STACKVALUECOLLECTION_HPP