graal-compiler: src/share/vm/classfile/classLoaderData.cpp annotate

annotate src/share/vm/classfile/classLoaderData.cpp @ 7417:1b1e16471e46

8005002: Crash because of a raw oop in ClassLoaderData::add_dependency Summary: Move the handelization of 'last' to a point before the GC might enter. Reviewed-by: dholmes, sspitsyn, coleenp

author	stefank
date	Wed, 12 Dec 2012 22:41:13 +0100
parents	90273fc0a981
children	c52660592f37

rev	line source
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	1 /*
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	2 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	4 *
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	5 * This code is free software; you can redistribute it and/or modify it
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	6 * under the terms of the GNU General Public License version 2 only, as
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	7 * published by the Free Software Foundation.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	8 *
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	9 * This code is distributed in the hope that it will be useful, but WITHOUT
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	12 * version 2 for more details (a copy is included in the LICENSE file that
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	13 * accompanied this code).
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	14 *
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	15 * You should have received a copy of the GNU General Public License version
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	16 * 2 along with this work; if not, write to the Free Software Foundation,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	18 *
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	20 * or visit www.oracle.com if you need additional information or have any
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	21 * questions.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	22 *
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	23 */
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	24
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	25 // A ClassLoaderData identifies the full set of class types that a class
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	26 // loader's name resolution strategy produces for a given configuration of the
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	27 // class loader.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	28 // Class types in the ClassLoaderData may be defined by from class file binaries
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	29 // provided by the class loader, or from other class loader it interacts with
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	30 // according to its name resolution strategy.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	31 //
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	32 // Class loaders that implement a deterministic name resolution strategy
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	33 // (including with respect to their delegation behavior), such as the boot, the
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	34 // extension, and the system loaders of the JDK's built-in class loader
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	35 // hierarchy, always produce the same linkset for a given configuration.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	36 //
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	37 // ClassLoaderData carries information related to a linkset (e.g.,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	38 // metaspace holding its klass definitions).
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	39 // The System Dictionary and related data structures (e.g., placeholder table,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	40 // loader constraints table) as well as the runtime representation of classes
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	41 // only reference ClassLoaderData.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	42 //
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	43 // Instances of java.lang.ClassLoader holds a pointer to a ClassLoaderData that
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	44 // that represent the loader's "linking domain" in the JVM.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	45 //
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	46 // The bootstrap loader (represented by NULL) also has a ClassLoaderData,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	47 // the singleton class the_null_class_loader_data().
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	48
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	49 #include "precompiled.hpp"
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	50 #include "classfile/classLoaderData.hpp"
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	51 #include "classfile/classLoaderData.inline.hpp"
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	52 #include "classfile/javaClasses.hpp"
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	53 #include "classfile/systemDictionary.hpp"
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	54 #include "code/codeCache.hpp"
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	55 #include "memory/metadataFactory.hpp"
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	56 #include "memory/metaspaceShared.hpp"
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	57 #include "prims/jvmtiRedefineClasses.hpp"
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	58 #include "runtime/jniHandles.hpp"
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	59 #include "runtime/mutex.hpp"
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	60 #include "runtime/safepoint.hpp"
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	61 #include "runtime/synchronizer.hpp"
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	62 #include "utilities/growableArray.hpp"
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	63 #include "utilities/ostream.hpp"
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	64
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	65 ClassLoaderData * ClassLoaderData::_the_null_class_loader_data = NULL;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	66
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	67 ClassLoaderData::ClassLoaderData(Handle h_class_loader) : _class_loader(h_class_loader()),
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	68 _metaspace(NULL), _unloading(false), _keep_alive(false), _klasses(NULL),
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	69 _claimed(0), _jmethod_ids(NULL), _handles(NULL), _deallocate_list(NULL),
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	70 _next(NULL), _dependencies(NULL),
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	71 _metaspace_lock(new Mutex(Monitor::leaf+1, "Metaspace allocation lock", true)) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	72 // empty
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	73 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	74
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	75 void ClassLoaderData::init_dependencies(TRAPS) {
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	76 // Create empty dependencies array to add to. CMS requires this to be
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	77 // an oop so that it can track additions via card marks. We think.
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	78 _dependencies = (oop)oopFactory::new_objectArray(2, CHECK);
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	79 }
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	80
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	81 bool ClassLoaderData::claim() {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	82 if (_claimed == 1) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	83 return false;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	84 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	85
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	86 return (int) Atomic::cmpxchg(1, &_claimed, 0) == 0;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	87 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	88
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	89 void ClassLoaderData::oops_do(OopClosure* f, KlassClosure* klass_closure, bool must_claim) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	90 if (must_claim && !claim()) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	91 return;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	92 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	93
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	94 f->do_oop(&_class_loader);
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	95 f->do_oop(&_dependencies);
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	96 _handles->oops_do(f);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	97 if (klass_closure != NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	98 classes_do(klass_closure);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	99 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	100 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	101
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	102 void ClassLoaderData::classes_do(KlassClosure* klass_closure) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	103 for (Klass* k = _klasses; k != NULL; k = k->next_link()) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	104 klass_closure->do_klass(k);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	105 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	106 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	107
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	108 void ClassLoaderData::classes_do(void f(InstanceKlass*)) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	109 for (Klass* k = _klasses; k != NULL; k = k->next_link()) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	110 if (k->oop_is_instance()) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	111 f(InstanceKlass::cast(k));
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	112 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	113 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	114 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	115
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	116 void ClassLoaderData::record_dependency(Klass* k, TRAPS) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	117 ClassLoaderData * const from_cld = this;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	118 ClassLoaderData * const to_cld = k->class_loader_data();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	119
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	120 // Dependency to the null class loader data doesn't need to be recorded
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	121 // because the null class loader data never goes away.
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	122 if (to_cld->is_the_null_class_loader_data()) {
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	123 return;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	124 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	125
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	126 oop to;
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	127 if (to_cld->is_anonymous()) {
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	128 // Anonymous class dependencies are through the mirror.
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	129 to = k->java_mirror();
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	130 } else {
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	131 to = to_cld->class_loader();
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	132
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	133 // If from_cld is anonymous, even if it's class_loader is a parent of 'to'
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	134 // we still have to add it. The class_loader won't keep from_cld alive.
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	135 if (!from_cld->is_anonymous()) {
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	136 // Check that this dependency isn't from the same or parent class_loader
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	137 oop from = from_cld->class_loader();
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	138
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	139 oop curr = from;
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	140 while (curr != NULL) {
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	141 if (curr == to) {
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	142 return; // this class loader is in the parent list, no need to add it.
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	143 }
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	144 curr = java_lang_ClassLoader::parent(curr);
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	145 }
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	146 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	147 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	148
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	149 // It's a dependency we won't find through GC, add it. This is relatively rare
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	150 // Must handle over GC point.
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	151 Handle dependency(THREAD, to);
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	152 from_cld->add_dependency(dependency, CHECK);
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	153 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	154
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	155
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	156 void ClassLoaderData::add_dependency(Handle dependency, TRAPS) {
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	157 // Check first if this dependency is already in the list.
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	158 // Save a pointer to the last to add to under the lock.
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	159 objArrayOop ok = (objArrayOop)_dependencies;
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	160 objArrayOop last = NULL;
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	161 while (ok != NULL) {
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	162 last = ok;
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	163 if (ok->obj_at(0) == dependency()) {
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	164 // Don't need to add it
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	165 return;
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	166 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	167 ok = (objArrayOop)ok->obj_at(1);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	168 }
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	169
7417 1b1e16471e46 8005002: Crash because of a raw oop in ClassLoaderData::add_dependency stefank parents: 7185 diff changeset	170 // Must handle over GC points
1b1e16471e46 8005002: Crash because of a raw oop in ClassLoaderData::add_dependency stefank parents: 7185 diff changeset	171 assert (last != NULL, "dependencies should be initialized");
1b1e16471e46 8005002: Crash because of a raw oop in ClassLoaderData::add_dependency stefank parents: 7185 diff changeset	172 objArrayHandle last_handle(THREAD, last);
1b1e16471e46 8005002: Crash because of a raw oop in ClassLoaderData::add_dependency stefank parents: 7185 diff changeset	173
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	174 // Create a new dependency node with fields for (class_loader or mirror, next)
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	175 objArrayOop deps = oopFactory::new_objectArray(2, CHECK);
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	176 deps->obj_at_put(0, dependency());
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	177
7417 1b1e16471e46 8005002: Crash because of a raw oop in ClassLoaderData::add_dependency stefank parents: 7185 diff changeset	178 // Must handle over GC points
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	179 objArrayHandle new_dependency(THREAD, deps);
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	180
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	181 // Add the dependency under lock
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	182 locked_add_dependency(last_handle, new_dependency);
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	183 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	184
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	185 void ClassLoaderData::locked_add_dependency(objArrayHandle last_handle,
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	186 objArrayHandle new_dependency) {
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	187
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	188 // Have to lock and put the new dependency on the end of the dependency
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	189 // array so the card mark for CMS sees that this dependency is new.
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	190 // Can probably do this lock free with some effort.
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	191 MutexLockerEx ml(metaspace_lock(), Mutex::_no_safepoint_check_flag);
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	192
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	193 oop loader_or_mirror = new_dependency->obj_at(0);
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	194
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	195 // Since the dependencies are only added, add to the end.
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	196 objArrayOop end = last_handle();
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	197 objArrayOop last = NULL;
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	198 while (end != NULL) {
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	199 last = end;
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	200 // check again if another thread added it to the end.
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	201 if (end->obj_at(0) == loader_or_mirror) {
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	202 // Don't need to add it
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	203 return;
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	204 }
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	205 end = (objArrayOop)end->obj_at(1);
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	206 }
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	207 assert (last != NULL, "dependencies should be initialized");
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	208 // fill in the first element with the oop in new_dependency.
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	209 if (last->obj_at(0) == NULL) {
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	210 last->obj_at_put(0, new_dependency->obj_at(0));
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	211 } else {
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	212 last->obj_at_put(1, new_dependency());
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	213 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	214 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	215
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	216 void ClassLoaderDataGraph::clear_claimed_marks() {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	217 for (ClassLoaderData* cld = _head; cld != NULL; cld = cld->next()) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	218 cld->clear_claimed();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	219 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	220 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	221
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	222 void ClassLoaderData::add_class(Klass* k) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	223 MutexLockerEx ml(metaspace_lock(), Mutex::_no_safepoint_check_flag);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	224 Klass* old_value = _klasses;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	225 k->set_next_link(old_value);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	226 // link the new item into the list
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	227 _klasses = k;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	228
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	229 if (TraceClassLoaderData && Verbose && k->class_loader_data() != NULL) {
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	230 ResourceMark rm;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	231 tty->print_cr("[TraceClassLoaderData] Adding k: " PTR_FORMAT " %s to CLD: "
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	232 PTR_FORMAT " loader: " PTR_FORMAT " %s",
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	233 k,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	234 k->external_name(),
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	235 k->class_loader_data(),
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	236 k->class_loader(),
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	237 loader_name());
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	238 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	239 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	240
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	241 // This is called by InstanceKlass::deallocate_contents() to remove the
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	242 // scratch_class for redefine classes. We need a lock because there it may not
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	243 // be called at a safepoint if there's an error.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	244 void ClassLoaderData::remove_class(Klass* scratch_class) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	245 MutexLockerEx ml(metaspace_lock(), Mutex::_no_safepoint_check_flag);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	246 Klass* prev = NULL;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	247 for (Klass* k = _klasses; k != NULL; k = k->next_link()) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	248 if (k == scratch_class) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	249 if (prev == NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	250 _klasses = k->next_link();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	251 } else {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	252 Klass* next = k->next_link();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	253 prev->set_next_link(next);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	254 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	255 return;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	256 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	257 prev = k;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	258 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	259 ShouldNotReachHere(); // should have found this class!!
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	260 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	261
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	262
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	263 bool ClassLoaderData::is_anonymous() const {
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	264 Klass* k = _klasses;
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	265 return (_keep_alive \|\| (k != NULL && k->oop_is_instance() &&
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	266 InstanceKlass::cast(k)->is_anonymous()));
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	267 }
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	268
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	269 void ClassLoaderData::unload() {
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	270 _unloading = true;
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	271
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	272 if (TraceClassLoaderData) {
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	273 ResourceMark rm;
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	274 tty->print("[ClassLoaderData: unload loader data "PTR_FORMAT, this);
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	275 tty->print(" for instance "PTR_FORMAT" of %s", class_loader(),
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	276 loader_name());
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	277 if (is_anonymous()) {
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	278 tty->print(" for anonymous class "PTR_FORMAT " ", _klasses);
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	279 }
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	280 tty->print_cr("]");
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	281 }
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	282 }
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	283
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	284 bool ClassLoaderData::is_alive(BoolObjectClosure* is_alive_closure) const {
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	285 bool alive =
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	286 is_anonymous() ?
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	287 is_alive_closure->do_object_b(_klasses->java_mirror()) :
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	288 class_loader() == NULL \|\| is_alive_closure->do_object_b(class_loader());
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	289 assert(!alive \|\| claimed(), "must be claimed");
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	290 return alive;
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	291 }
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	292
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	293
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	294 ClassLoaderData::~ClassLoaderData() {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	295 Metaspace *m = _metaspace;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	296 if (m != NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	297 _metaspace = NULL;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	298 // release the metaspace
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	299 delete m;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	300 // release the handles
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	301 if (_handles != NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	302 JNIHandleBlock::release_block(_handles);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	303 _handles = NULL;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	304 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	305 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	306
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	307 // Clear all the JNI handles for methods
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	308 // These aren't deallocated and are going to look like a leak, but that's
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	309 // needed because we can't really get rid of jmethodIDs because we don't
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	310 // know when native code is going to stop using them. The spec says that
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	311 // they're "invalid" but existing programs likely rely on their being
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	312 // NULL after class unloading.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	313 if (_jmethod_ids != NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	314 Method::clear_jmethod_ids(this);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	315 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	316 // Delete lock
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	317 delete _metaspace_lock;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	318
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	319 // Delete free list
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	320 if (_deallocate_list != NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	321 delete _deallocate_list;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	322 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	323 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	324
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	325 Metaspace* ClassLoaderData::metaspace_non_null() {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	326 // If the metaspace has not been allocated, create a new one. Might want
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	327 // to create smaller arena for Reflection class loaders also.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	328 // The reason for the delayed allocation is because some class loaders are
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	329 // simply for delegating with no metadata of their own.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	330 if (_metaspace == NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	331 MutexLockerEx ml(metaspace_lock(), Mutex::_no_safepoint_check_flag);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	332 // Check again if metaspace has been allocated while we were getting this lock.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	333 if (_metaspace != NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	334 return _metaspace;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	335 }
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	336 if (this == the_null_class_loader_data()) {
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	337 assert (class_loader() == NULL, "Must be");
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	338 size_t word_size = Metaspace::first_chunk_word_size();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	339 set_metaspace(new Metaspace(_metaspace_lock, word_size));
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	340 } else {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	341 set_metaspace(new Metaspace(_metaspace_lock)); // default size for now.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	342 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	343 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	344 return _metaspace;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	345 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	346
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	347 JNIHandleBlock* ClassLoaderData::handles() const { return _handles; }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	348 void ClassLoaderData::set_handles(JNIHandleBlock* handles) { _handles = handles; }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	349
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	350 jobject ClassLoaderData::add_handle(Handle h) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	351 MutexLockerEx ml(metaspace_lock(), Mutex::_no_safepoint_check_flag);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	352 if (handles() == NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	353 set_handles(JNIHandleBlock::allocate_block());
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	354 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	355 return handles()->allocate_handle(h());
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	356 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	357
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	358 // Add this metadata pointer to be freed when it's safe. This is only during
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	359 // class unloading because Handles might point to this metadata field.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	360 void ClassLoaderData::add_to_deallocate_list(Metadata* m) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	361 // Metadata in shared region isn't deleted.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	362 if (!m->is_shared()) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	363 MutexLockerEx ml(metaspace_lock(), Mutex::_no_safepoint_check_flag);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	364 if (_deallocate_list == NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	365 _deallocate_list = new (ResourceObj::C_HEAP, mtClass) GrowableArray<Metadata*>(100, true);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	366 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	367 _deallocate_list->append_if_missing(m);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	368 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	369 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	370
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	371 // Deallocate free metadata on the free list. How useful the PermGen was!
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	372 void ClassLoaderData::free_deallocate_list() {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	373 // Don't need lock, at safepoint
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	374 assert(SafepointSynchronize::is_at_safepoint(), "only called at safepoint");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	375 if (_deallocate_list == NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	376 return;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	377 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	378 // Go backwards because this removes entries that are freed.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	379 for (int i = _deallocate_list->length() - 1; i >= 0; i--) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	380 Metadata* m = _deallocate_list->at(i);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	381 if (!m->on_stack()) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	382 _deallocate_list->remove_at(i);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	383 // There are only three types of metadata that we deallocate directly.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	384 // Cast them so they can be used by the template function.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	385 if (m->is_method()) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	386 MetadataFactory::free_metadata(this, (Method*)m);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	387 } else if (m->is_constantPool()) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	388 MetadataFactory::free_metadata(this, (ConstantPool*)m);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	389 } else if (m->is_klass()) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	390 MetadataFactory::free_metadata(this, (InstanceKlass*)m);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	391 } else {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	392 ShouldNotReachHere();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	393 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	394 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	395 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	396 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	397
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	398 // These anonymous class loaders are to contain classes used for JSR292
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	399 ClassLoaderData* ClassLoaderData::anonymous_class_loader_data(oop loader, TRAPS) {
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	400 // Add a new class loader data to the graph.
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	401 ClassLoaderData* cld = ClassLoaderDataGraph::add(NULL, loader, CHECK_NULL);
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	402 return cld;
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	403 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	404
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	405 const char* ClassLoaderData::loader_name() {
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	406 // Handles null class loader
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	407 return SystemDictionary::loader_name(class_loader());
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	408 }
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	409
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	410 #ifndef PRODUCT
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	411 // Define to dump klasses
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	412 #undef CLD_DUMP_KLASSES
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	413
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	414 void ClassLoaderData::dump(outputStream * const out) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	415 ResourceMark rm;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	416 out->print("ClassLoaderData CLD: "PTR_FORMAT", loader: "PTR_FORMAT", loader_klass: "PTR_FORMAT" %s {",
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	417 this, class_loader(),
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	418 class_loader() != NULL ? class_loader()->klass() : NULL, loader_name());
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	419 if (claimed()) out->print(" claimed ");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	420 if (is_unloading()) out->print(" unloading ");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	421 out->print(" handles " INTPTR_FORMAT, handles());
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	422 out->cr();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	423 if (metaspace_or_null() != NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	424 out->print_cr("metaspace: " PTR_FORMAT, metaspace_or_null());
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	425 metaspace_or_null()->dump(out);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	426 } else {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	427 out->print_cr("metaspace: NULL");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	428 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	429
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	430 #ifdef CLD_DUMP_KLASSES
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	431 if (Verbose) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	432 ResourceMark rm;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	433 Klass* k = _klasses;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	434 while (k != NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	435 out->print_cr("klass "PTR_FORMAT", %s, CT: %d, MUT: %d", k, k->name()->as_C_string(),
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	436 k->has_modified_oops(), k->has_accumulated_modified_oops());
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	437 k = k->next_link();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	438 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	439 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	440 #endif // CLD_DUMP_KLASSES
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	441 #undef CLD_DUMP_KLASSES
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	442 if (_jmethod_ids != NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	443 Method::print_jmethod_ids(this, out);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	444 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	445 out->print_cr("}");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	446 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	447 #endif // PRODUCT
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	448
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	449 void ClassLoaderData::verify() {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	450 oop cl = class_loader();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	451
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	452 guarantee(this == class_loader_data(cl) \|\| is_anonymous(), "Must be the same");
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	453 guarantee(cl != NULL \|\| this == ClassLoaderData::the_null_class_loader_data() \|\| is_anonymous(), "must be");
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	454
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	455 // Verify the integrity of the allocated space.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	456 if (metaspace_or_null() != NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	457 metaspace_or_null()->verify();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	458 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	459
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	460 for (Klass* k = _klasses; k != NULL; k = k->next_link()) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	461 guarantee(k->class_loader_data() == this, "Must be the same");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	462 k->verify();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	463 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	464 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	465
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	466
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	467 // GC root of class loader data created.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	468 ClassLoaderData* ClassLoaderDataGraph::_head = NULL;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	469 ClassLoaderData* ClassLoaderDataGraph::_unloading = NULL;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	470 ClassLoaderData* ClassLoaderDataGraph::_saved_head = NULL;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	471
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	472
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	473 // Add a new class loader data node to the list. Assign the newly created
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	474 // ClassLoaderData into the java/lang/ClassLoader object as a hidden field
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	475 ClassLoaderData* ClassLoaderDataGraph::add(ClassLoaderData** cld_addr, Handle loader, TRAPS) {
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	476 // Not assigned a class loader data yet.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	477 // Create one.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	478 ClassLoaderData* *list_head = &_head;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	479 ClassLoaderData* next = _head;
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	480 ClassLoaderData* cld = new ClassLoaderData(loader);
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	481
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	482 if (cld_addr != NULL) {
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	483 // First, Atomically set it
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	484 ClassLoaderData* old = (ClassLoaderData*) Atomic::cmpxchg_ptr(cld, cld_addr, NULL);
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	485 if (old != NULL) {
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	486 delete cld;
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	487 // Returns the data.
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	488 return old;
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	489 }
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	490 } else {
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	491 // Disallow unloading for this CLD during initialization if there is no
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	492 // class_loader oop to link this to.
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	493 cld->set_keep_alive(true);
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	494 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	495
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	496 // We won the race, and therefore the task of adding the data to the list of
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	497 // class loader data
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	498 do {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	499 cld->set_next(next);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	500 ClassLoaderData* exchanged = (ClassLoaderData*)Atomic::cmpxchg_ptr(cld, list_head, next);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	501 if (exchanged == next) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	502 if (TraceClassLoaderData) {
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	503 ResourceMark rm;
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	504 tty->print("[ClassLoaderData: ");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	505 tty->print("create class loader data "PTR_FORMAT, cld);
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	506 tty->print(" for instance "PTR_FORMAT" of %s", cld->class_loader(),
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	507 cld->loader_name());
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	508 tty->print_cr("]");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	509 }
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	510 // Create dependencies after the CLD is added to the list. Otherwise,
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	511 // the GC GC will not find the CLD and the _class_loader field will
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	512 // not be updated.
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	513 cld->init_dependencies(CHECK_NULL);
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	514 return cld;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	515 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	516 next = exchanged;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	517 } while (true);
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	518
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	519 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	520
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	521 void ClassLoaderDataGraph::oops_do(OopClosure* f, KlassClosure* klass_closure, bool must_claim) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	522 for (ClassLoaderData* cld = _head; cld != NULL; cld = cld->next()) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	523 cld->oops_do(f, klass_closure, must_claim);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	524 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	525 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	526
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	527 void ClassLoaderDataGraph::keep_alive_oops_do(OopClosure* f, KlassClosure* klass_closure, bool must_claim) {
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	528 for (ClassLoaderData* cld = _head; cld != NULL; cld = cld->next()) {
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	529 if (cld->keep_alive()) {
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	530 cld->oops_do(f, klass_closure, must_claim);
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	531 }
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	532 }
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	533 }
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	534
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	535 void ClassLoaderDataGraph::always_strong_oops_do(OopClosure* f, KlassClosure* klass_closure, bool must_claim) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	536 if (ClassUnloading) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	537 ClassLoaderData::the_null_class_loader_data()->oops_do(f, klass_closure, must_claim);
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	538 // keep any special CLDs alive.
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	539 ClassLoaderDataGraph::keep_alive_oops_do(f, klass_closure, must_claim);
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	540 } else {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	541 ClassLoaderDataGraph::oops_do(f, klass_closure, must_claim);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	542 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	543 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	544
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	545 void ClassLoaderDataGraph::classes_do(KlassClosure* klass_closure) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	546 for (ClassLoaderData* cld = _head; cld != NULL; cld = cld->next()) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	547 cld->classes_do(klass_closure);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	548 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	549 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	550
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	551 GrowableArray<ClassLoaderData> ClassLoaderDataGraph::new_clds() {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	552 assert(_head == NULL \|\| _saved_head != NULL, "remember_new_clds(true) not called?");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	553
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	554 GrowableArray<ClassLoaderData> array = new GrowableArray<ClassLoaderData*>();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	555
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	556 // The CLDs in [_head, _saved_head] were all added during last call to remember_new_clds(true);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	557 ClassLoaderData* curr = _head;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	558 while (curr != _saved_head) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	559 if (!curr->claimed()) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	560 array->push(curr);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	561
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	562 if (TraceClassLoaderData) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	563 tty->print("[ClassLoaderData] found new CLD: ");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	564 curr->print_value_on(tty);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	565 tty->cr();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	566 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	567 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	568
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	569 curr = curr->_next;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	570 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	571
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	572 return array;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	573 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	574
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	575 #ifndef PRODUCT
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	576 // for debugging and hsfind(x)
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	577 bool ClassLoaderDataGraph::contains(address x) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	578 // I think we need the _metaspace_lock taken here because the class loader
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	579 // data graph could be changing while we are walking it (new entries added,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	580 // new entries being unloaded, etc).
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	581 if (DumpSharedSpaces) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	582 // There are only two metaspaces to worry about.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	583 ClassLoaderData* ncld = ClassLoaderData::the_null_class_loader_data();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	584 return (ncld->ro_metaspace()->contains(x) \|\| ncld->rw_metaspace()->contains(x));
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	585 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	586
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	587 if (UseSharedSpaces && MetaspaceShared::is_in_shared_space(x)) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	588 return true;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	589 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	590
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	591 for (ClassLoaderData* cld = _head; cld != NULL; cld = cld->next()) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	592 if (cld->metaspace_or_null() != NULL && cld->metaspace_or_null()->contains(x)) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	593 return true;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	594 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	595 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	596
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	597 // Could also be on an unloading list which is okay, ie. still allocated
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	598 // for a little while.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	599 for (ClassLoaderData* ucld = _unloading; ucld != NULL; ucld = ucld->next()) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	600 if (ucld->metaspace_or_null() != NULL && ucld->metaspace_or_null()->contains(x)) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	601 return true;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	602 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	603 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	604 return false;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	605 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	606
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	607 bool ClassLoaderDataGraph::contains_loader_data(ClassLoaderData* loader_data) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	608 for (ClassLoaderData* data = _head; data != NULL; data = data->next()) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	609 if (loader_data == data) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	610 return true;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	611 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	612 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	613
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	614 return false;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	615 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	616 #endif // PRODUCT
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	617
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	618
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	619 // Move class loader data from main list to the unloaded list for unloading
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	620 // and deallocation later.
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	621 bool ClassLoaderDataGraph::do_unloading(BoolObjectClosure* is_alive_closure) {
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	622 ClassLoaderData* data = _head;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	623 ClassLoaderData* prev = NULL;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	624 bool seen_dead_loader = false;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	625 // mark metadata seen on the stack and code cache so we can delete
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	626 // unneeded entries.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	627 bool has_redefined_a_class = JvmtiExport::has_redefined_a_class();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	628 MetadataOnStackMark md_on_stack;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	629 while (data != NULL) {
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	630 if (data->keep_alive() \|\| data->is_alive(is_alive_closure)) {
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	631 if (has_redefined_a_class) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	632 data->classes_do(InstanceKlass::purge_previous_versions);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	633 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	634 data->free_deallocate_list();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	635 prev = data;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	636 data = data->next();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	637 continue;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	638 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	639 seen_dead_loader = true;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	640 ClassLoaderData* dead = data;
7185 90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap coleenp parents: 6725 diff changeset	641 dead->unload();
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	642 data = data->next();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	643 // Remove from loader list.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	644 if (prev != NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	645 prev->set_next(data);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	646 } else {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	647 assert(dead == _head, "sanity check");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	648 _head = data;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	649 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	650 dead->set_next(_unloading);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	651 _unloading = dead;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	652 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	653 return seen_dead_loader;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	654 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	655
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	656 void ClassLoaderDataGraph::purge() {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	657 ClassLoaderData* list = _unloading;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	658 _unloading = NULL;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	659 ClassLoaderData* next = list;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	660 while (next != NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	661 ClassLoaderData* purge_me = next;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	662 next = purge_me->next();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	663 delete purge_me;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	664 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	665 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	666
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	667 // CDS support
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	668
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	669 // Global metaspaces for writing information to the shared archive. When
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	670 // application CDS is supported, we may need one per metaspace, so this
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	671 // sort of looks like it.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	672 Metaspace* ClassLoaderData::_ro_metaspace = NULL;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	673 Metaspace* ClassLoaderData::_rw_metaspace = NULL;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	674 static bool _shared_metaspaces_initialized = false;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	675
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	676 // Initialize shared metaspaces (change to call from somewhere not lazily)
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	677 void ClassLoaderData::initialize_shared_metaspaces() {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	678 assert(DumpSharedSpaces, "only use this for dumping shared spaces");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	679 assert(this == ClassLoaderData::the_null_class_loader_data(),
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	680 "only supported for null loader data for now");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	681 assert (!_shared_metaspaces_initialized, "only initialize once");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	682 MutexLockerEx ml(metaspace_lock(), Mutex::_no_safepoint_check_flag);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	683 _ro_metaspace = new Metaspace(_metaspace_lock, SharedReadOnlySize/wordSize);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	684 _rw_metaspace = new Metaspace(_metaspace_lock, SharedReadWriteSize/wordSize);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	685 _shared_metaspaces_initialized = true;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	686 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	687
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	688 Metaspace* ClassLoaderData::ro_metaspace() {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	689 assert(_ro_metaspace != NULL, "should already be initialized");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	690 return _ro_metaspace;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	691 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	692
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	693 Metaspace* ClassLoaderData::rw_metaspace() {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	694 assert(_rw_metaspace != NULL, "should already be initialized");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	695 return _rw_metaspace;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	696 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	697
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	698
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	699 ClassLoaderDataGraphMetaspaceIterator::ClassLoaderDataGraphMetaspaceIterator() {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	700 _data = ClassLoaderDataGraph::_head;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	701 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	702
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	703 ClassLoaderDataGraphMetaspaceIterator::~ClassLoaderDataGraphMetaspaceIterator() {}
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	704
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	705 #ifndef PRODUCT
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	706 // callable from debugger
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	707 extern "C" int print_loader_data_graph() {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	708 ClassLoaderDataGraph::dump_on(tty);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	709 return 0;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	710 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	711
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	712 void ClassLoaderDataGraph::verify() {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	713 for (ClassLoaderData* data = _head; data != NULL; data = data->next()) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	714 data->verify();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	715 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	716 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	717
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	718 void ClassLoaderDataGraph::dump_on(outputStream * const out) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	719 for (ClassLoaderData* data = _head; data != NULL; data = data->next()) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	720 data->dump(out);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	721 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	722 MetaspaceAux::dump(out);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	723 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	724
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	725 void ClassLoaderData::print_value_on(outputStream* out) const {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	726 if (class_loader() == NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	727 out->print_cr("NULL class_loader");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	728 } else {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	729 out->print("class loader "PTR_FORMAT, this);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	730 class_loader()->print_value_on(out);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	731 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	732 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: diff changeset	733 #endif // PRODUCT

Mercurial > hg > graal-compiler

annotate src/share/vm/classfile/classLoaderData.cpp @ 7417:1b1e16471e46