Mercurial > hg > graal-jvmci-8
annotate src/share/vm/runtime/stackValueCollection.hpp @ 3979:4dfb2df418f2
6484982: G1: process references during evacuation pauses
Summary: G1 now uses two reference processors - one is used by concurrent marking and the other is used by STW GCs (both full and incremental evacuation pauses). In an evacuation pause, the reference processor is embedded into the closures used to scan objects. Doing so causes causes reference objects to be 'discovered' by the reference processor. At the end of the evacuation pause, these discovered reference objects are processed - preserving (and copying) referent objects (and their reachable graphs) as appropriate.
Reviewed-by: ysr, jwilhelm, brutisso, stefank, tonyp
| author | johnc |
|---|---|
| date | Thu, 22 Sep 2011 10:57:37 -0700 |
| parents | f95d63e2154a |
| children |
| rev | line source |
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| 0 | 1 /* |
| 1972 | 2 * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_RUNTIME_STACKVALUECOLLECTION_HPP |
| 26 #define SHARE_VM_RUNTIME_STACKVALUECOLLECTION_HPP | |
| 27 | |
| 28 #include "memory/allocation.hpp" | |
| 29 #include "runtime/stackValue.hpp" | |
| 30 #include "utilities/growableArray.hpp" | |
| 31 | |
| 0 | 32 class StackValueCollection : public ResourceObj { |
| 33 private: | |
| 34 GrowableArray<StackValue*>* _values; | |
| 35 | |
| 36 public: | |
| 37 StackValueCollection() { _values = new GrowableArray<StackValue*>(); } | |
| 38 StackValueCollection(int length) { _values = new GrowableArray<StackValue*>(length); } | |
| 39 | |
| 40 void add(StackValue *val) const { _values->push(val); } | |
| 41 int size() const { return _values->length(); } | |
| 42 bool is_empty() const { return (size() == 0); } | |
| 43 StackValue* at(int i) const { return _values->at(i); } | |
| 44 | |
| 45 // Get typed locals/expressions | |
| 46 jint int_at(int slot) const; | |
| 47 jlong long_at(int slot) const; | |
| 48 Handle obj_at(int slot) const; | |
| 49 jfloat float_at(int slot) const; | |
| 50 jdouble double_at(int slot) const; | |
| 51 | |
| 52 // Set typed locals/expressions | |
| 53 void set_int_at(int slot, jint value); | |
| 54 void set_long_at(int slot, jlong value); | |
| 55 void set_obj_at(int slot, Handle value); | |
| 56 void set_float_at(int slot, jfloat value); | |
| 57 void set_double_at(int slot, jdouble value); | |
| 58 | |
| 59 void print(); | |
| 60 }; | |
| 1972 | 61 |
| 62 #endif // SHARE_VM_RUNTIME_STACKVALUECOLLECTION_HPP |