Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/prims/jvmtiGetLoadedClasses.cpp
src/share/vm/prims/jvmtiGetLoadedClasses.cpp
- changeset 9195
- 9ffa7549c389
- parent 6198
- 55fb97c4c58d
- child 9203
- 53eec13fbaa5
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| 9194:54344847b209 | 9195:9ffa7549c389 |
|---|---|
| 1 /* | 1 /* |
| 2 * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved. | 2 * Copyright (c) 2003, 2018, Oracle and/or its affiliates. All rights reserved. |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | 4 * |
| 5 * This code is free software; you can redistribute it and/or modify it | 5 * This code is free software; you can redistribute it and/or modify it |
| 6 * under the terms of the GNU General Public License version 2 only, as | 6 * under the terms of the GNU General Public License version 2 only, as |
| 7 * published by the Free Software Foundation. | 7 * published by the Free Software Foundation. |
| 25 #include "precompiled.hpp" | 25 #include "precompiled.hpp" |
| 26 #include "classfile/systemDictionary.hpp" | 26 #include "classfile/systemDictionary.hpp" |
| 27 #include "memory/universe.inline.hpp" | 27 #include "memory/universe.inline.hpp" |
| 28 #include "prims/jvmtiGetLoadedClasses.hpp" | 28 #include "prims/jvmtiGetLoadedClasses.hpp" |
| 29 #include "runtime/thread.hpp" | 29 #include "runtime/thread.hpp" |
| 30 #if INCLUDE_ALL_GCS | |
| 31 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp" | |
| 32 #endif | |
| 30 | 33 |
| 31 | 34 |
| 32 // The closure for GetLoadedClasses | 35 // The closure for GetLoadedClasses |
| 33 class LoadedClassesClosure : public KlassClosure { | 36 class LoadedClassesClosure : public KlassClosure { |
| 34 private: | 37 private: |
| 35 Stack<jclass, mtInternal> _classStack; | 38 Stack<jclass, mtInternal> _classStack; |
| 36 JvmtiEnv* _env; | 39 JvmtiEnv* _env; |
| 37 | 40 |
| 41 // Tell the GC to keep this klass alive | |
| 42 static void ensure_klass_alive(oop o) { | |
| 43 // A klass that was previously considered dead can be looked up in the | |
| 44 // CLD/SD, and its _java_mirror or _class_loader can be stored in a root | |
| 45 // or a reachable object making it alive again. The SATB part of G1 needs | |
| 46 // to get notified about this potential resurrection, otherwise the marking | |
| 47 // might not find the object. | |
| 48 #if INCLUDE_ALL_GCS | |
| 49 if (UseG1GC && o != NULL) { | |
| 50 G1SATBCardTableModRefBS::enqueue(o); | |
| 51 } | |
| 52 #endif | |
| 53 } | |
| 54 | |
| 38 public: | 55 public: |
| 39 LoadedClassesClosure(JvmtiEnv* env) { | 56 LoadedClassesClosure(JvmtiEnv* env) { |
| 40 _env = env; | 57 _env = env; |
| 41 } | 58 } |
| 42 | 59 |
| 43 void do_klass(Klass* k) { | 60 void do_klass(Klass* k) { |
| 44 // Collect all jclasses | 61 // Collect all jclasses |
| 45 _classStack.push((jclass) _env->jni_reference(k->java_mirror())); | 62 _classStack.push((jclass) _env->jni_reference(k->java_mirror())); |
| 63 ensure_klass_alive(k->java_mirror()); | |
| 46 } | 64 } |
| 47 | 65 |
| 48 int extract(jclass* result_list) { | 66 int extract(jclass* result_list) { |
| 49 // The size of the Stack will be 0 after extract, so get it here | 67 // The size of the Stack will be 0 after extract, so get it here |
| 50 int count = (int)_classStack.size(); | 68 int count = (int)_classStack.size(); |
