Mercurial > hg > truffle
comparison src/share/vm/services/memoryManager.cpp @ 6725:da91efe96a93
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 |
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date | Sat, 01 Sep 2012 13:25:18 -0400 |
parents | d2a62e0f25eb |
children | dbd5837b342f |
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6724:36d1d483d5d6 | 6725:da91efe96a93 |
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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); |