Mercurial > hg > truffle
annotate src/share/vm/runtime/vframe_hp.hpp @ 1145:e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
Summary: Autonomic per-worker free block cache sizing, tunable coalition policies, fixes to per-size block statistics, retuned gain and bandwidth of some feedback loop filters to allow quicker reactivity to abrupt changes in ambient demand, and other heuristics to reduce fragmentation of the CMS old gen. Also tightened some assertions, including those related to locking.
Reviewed-by: jmasa
| author | ysr |
|---|---|
| date | Wed, 23 Dec 2009 09:23:54 -0800 |
| parents | 89e0543e1737 |
| children | c18cbe5936b8 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 948 | 2 * Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
| 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 class compiledVFrame: public javaVFrame { | |
| 26 public: | |
| 27 // JVM state | |
|
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28 methodOop method() const; |
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29 int bci() const; |
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30 bool should_reexecute() const; |
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31 StackValueCollection* locals() const; |
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32 StackValueCollection* expressions() const; |
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33 GrowableArray<MonitorInfo*>* monitors() const; |
| 0 | 34 |
| 35 void set_locals(StackValueCollection* values) const; | |
| 36 | |
| 37 // Virtuals defined in vframe | |
| 38 bool is_compiled_frame() const { return true; } | |
| 39 vframe* sender() const; | |
| 40 bool is_top() const; | |
| 41 | |
| 42 // Casting | |
| 43 static compiledVFrame* cast(vframe* vf) { | |
| 44 assert(vf == NULL || vf->is_compiled_frame(), "must be compiled frame"); | |
| 45 return (compiledVFrame*) vf; | |
| 46 } | |
| 47 | |
| 48 public: | |
| 49 // Constructors | |
| 50 compiledVFrame(const frame* fr, const RegisterMap* reg_map, JavaThread* thread, nmethod* nm); | |
| 51 | |
| 52 // Update a local in a compiled frame. Update happens when deopt occurs | |
| 53 void update_local(BasicType type, int index, jvalue value); | |
| 54 | |
| 55 // Returns the active nmethod | |
| 56 nmethod* code() const; | |
| 57 | |
| 58 // Returns the scopeDesc | |
| 59 ScopeDesc* scope() const { return _scope; } | |
| 60 | |
| 61 // Returns SynchronizationEntryBCI or bci() (used for synchronization) | |
| 62 int raw_bci() const; | |
| 63 | |
| 64 protected: | |
| 65 ScopeDesc* _scope; | |
| 66 | |
| 67 | |
| 68 //StackValue resolve(ScopeValue* sv) const; | |
| 69 BasicLock* resolve_monitor_lock(Location location) const; | |
| 70 StackValue *create_stack_value(ScopeValue *sv) const; | |
| 71 | |
| 72 private: | |
| 73 compiledVFrame(const frame* fr, const RegisterMap* reg_map, JavaThread* thread, ScopeDesc* scope); | |
| 74 | |
| 75 #ifndef PRODUCT | |
| 76 public: | |
| 77 void verify() const; | |
| 78 #endif | |
| 79 }; | |
| 80 | |
| 81 // In order to implement set_locals for compiled vframes we must | |
| 82 // store updated locals in a data structure that contains enough | |
| 83 // information to recognize equality with a vframe and to store | |
| 84 // any updated locals. | |
| 85 | |
| 86 class jvmtiDeferredLocalVariable; | |
| 87 class jvmtiDeferredLocalVariableSet : public CHeapObj { | |
| 88 private: | |
| 89 | |
| 90 methodOop _method; // must be GC'd | |
| 91 int _bci; | |
| 92 intptr_t* _id; | |
| 93 GrowableArray<jvmtiDeferredLocalVariable*>* _locals; | |
| 94 | |
| 95 public: | |
| 96 // JVM state | |
| 97 methodOop method() const { return _method; } | |
| 98 int bci() const { return _bci; } | |
| 99 intptr_t* id() const { return _id; } | |
| 100 GrowableArray<jvmtiDeferredLocalVariable*>* locals() const { return _locals; } | |
| 101 void set_local_at(int idx, BasicType typ, jvalue val); | |
| 102 | |
| 103 // Does the vframe match this jvmtiDeferredLocalVariableSet | |
| 104 bool matches(vframe* vf); | |
| 105 // GC | |
| 106 void oops_do(OopClosure* f); | |
| 107 | |
| 108 // constructor | |
| 109 jvmtiDeferredLocalVariableSet(methodOop method, int bci, intptr_t* id); | |
| 110 | |
| 111 // destructor | |
| 112 ~jvmtiDeferredLocalVariableSet(); | |
| 113 | |
| 114 | |
| 115 }; | |
| 116 | |
| 117 class jvmtiDeferredLocalVariable : public CHeapObj { | |
| 118 public: | |
| 119 | |
| 120 jvmtiDeferredLocalVariable(int index, BasicType type, jvalue value); | |
| 121 | |
| 122 BasicType type(void) { return _type; } | |
| 123 int index(void) { return _index; } | |
| 124 jvalue value(void) { return _value; } | |
| 125 // Only mutator is for value as only it can change | |
| 126 void set_value(jvalue value) { _value = value; } | |
| 127 // For gc | |
| 128 oop* oop_addr(void) { return (oop*) &_value.l; } | |
| 129 | |
| 130 private: | |
| 131 | |
| 132 BasicType _type; | |
| 133 jvalue _value; | |
| 134 int _index; | |
| 135 | |
| 136 }; |