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comparison src/share/vm/services/memoryManager.cpp @ 6725:da91efe96a93

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6964458: Reimplement class meta-data storage to use native memory Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
author coleenp
date Sat, 01 Sep 2012 13:25:18 -0400
parents d2a62e0f25eb
children dbd5837b342f
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6724:36d1d483d5d6 6725:da91efe96a93
1 /* 1 /*
2 * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 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 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
98 // loads from anything _memory_mgr_obj points to or implies. 98 // loads from anything _memory_mgr_obj points to or implies.
99 instanceOop mgr_obj = (instanceOop)OrderAccess::load_ptr_acquire(&_memory_mgr_obj); 99 instanceOop mgr_obj = (instanceOop)OrderAccess::load_ptr_acquire(&_memory_mgr_obj);
100 if (mgr_obj == NULL) { 100 if (mgr_obj == NULL) {
101 // It's ok for more than one thread to execute the code up to the locked region. 101 // It's ok for more than one thread to execute the code up to the locked region.
102 // Extra manager instances will just be gc'ed. 102 // Extra manager instances will just be gc'ed.
103 klassOop k = Management::sun_management_ManagementFactory_klass(CHECK_0); 103 Klass* k = Management::sun_management_ManagementFactory_klass(CHECK_0);
104 instanceKlassHandle ik(THREAD, k); 104 instanceKlassHandle ik(THREAD, k);
105 105
106 Handle mgr_name = java_lang_String::create_from_str(name(), CHECK_0); 106 Handle mgr_name = java_lang_String::create_from_str(name(), CHECK_0);
107 107
108 JavaValue result(T_OBJECT); 108 JavaValue result(T_OBJECT);