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comparison: src/share/vm/runtime/rframe.hpp
src/share/vm/runtime/rframe.hpp
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| 1 /* | |
| 2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. | |
| 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 20 * or visit www.oracle.com if you need additional information or have any | |
| 21 * questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 #ifndef SHARE_VM_RUNTIME_RFRAME_HPP | |
| 26 #define SHARE_VM_RUNTIME_RFRAME_HPP | |
| 27 | |
| 28 #include "memory/allocation.hpp" | |
| 29 #include "runtime/frame.inline.hpp" | |
| 30 | |
| 31 // rframes ("recompiler frames") decorate stack frames with some extra information | |
| 32 // needed by the recompiler. The recompiler views the stack (at the time of recompilation) | |
| 33 // as a list of rframes. | |
| 34 | |
| 35 class RFrame : public ResourceObj { | |
| 36 protected: | |
| 37 const frame _fr; // my frame | |
| 38 JavaThread* const _thread; // thread where frame resides. | |
| 39 RFrame* _caller; // caller / callee rframes (or NULL) | |
| 40 RFrame*const _callee; | |
| 41 const int _num; // stack frame number (0 = most recent) | |
| 42 int _invocations; // current invocation estimate (for this frame) | |
| 43 // (i.e., how often was this frame called) | |
| 44 int _distance; // recompilation search "distance" (measured in # of interpreted frames) | |
| 45 | |
| 46 RFrame(frame fr, JavaThread* thread, RFrame*const callee); | |
| 47 virtual void init() = 0; // compute invocations, loopDepth, etc. | |
| 48 void print(const char* name); | |
| 49 | |
| 50 public: | |
| 51 | |
| 52 static RFrame* new_RFrame(frame fr, JavaThread* thread, RFrame*const callee); | |
| 53 | |
| 54 virtual bool is_interpreted() const { return false; } | |
| 55 virtual bool is_compiled() const { return false; } | |
| 56 int distance() const { return _distance; } | |
| 57 void set_distance(int d); | |
| 58 int invocations() const { return _invocations; } | |
| 59 int num() const { return _num; } | |
| 60 frame fr() const { return _fr; } | |
| 61 JavaThread* thread() const { return _thread; } | |
| 62 virtual int cost() const = 0; // estimated inlining cost (size) | |
| 63 virtual methodHandle top_method() const = 0; | |
| 64 virtual javaVFrame* top_vframe() const = 0; | |
| 65 virtual nmethod* nm() const { ShouldNotCallThis(); return NULL; } | |
| 66 | |
| 67 RFrame* caller(); | |
| 68 RFrame* callee() const { return _callee; } | |
| 69 RFrame* parent() const; // rframe containing lexical scope (if any) | |
| 70 virtual void print() = 0; | |
| 71 | |
| 72 static int computeSends(Method* m); | |
| 73 static int computeSends(nmethod* nm); | |
| 74 static int computeCumulSends(Method* m); | |
| 75 static int computeCumulSends(nmethod* nm); | |
| 76 }; | |
| 77 | |
| 78 class CompiledRFrame : public RFrame { // frame containing a compiled method | |
| 79 protected: | |
| 80 nmethod* _nm; | |
| 81 javaVFrame* _vf; // top vframe; may be NULL (for most recent frame) | |
| 82 methodHandle _method; // top method | |
| 83 | |
| 84 CompiledRFrame(frame fr, JavaThread* thread, RFrame*const callee); | |
| 85 void init(); | |
| 86 friend class RFrame; | |
| 87 | |
| 88 public: | |
| 89 CompiledRFrame(frame fr, JavaThread* thread); // for nmethod triggering its counter (callee == NULL) | |
| 90 bool is_compiled() const { return true; } | |
| 91 methodHandle top_method() const { return _method; } | |
| 92 javaVFrame* top_vframe() const { return _vf; } | |
| 93 nmethod* nm() const { return _nm; } | |
| 94 int cost() const; | |
| 95 void print(); | |
| 96 }; | |
| 97 | |
| 98 class InterpretedRFrame : public RFrame { // interpreter frame | |
| 99 protected: | |
| 100 javaVFrame* _vf; // may be NULL (for most recent frame) | |
| 101 methodHandle _method; | |
| 102 | |
| 103 InterpretedRFrame(frame fr, JavaThread* thread, RFrame*const callee); | |
| 104 void init(); | |
| 105 friend class RFrame; | |
| 106 | |
| 107 public: | |
| 108 InterpretedRFrame(frame fr, JavaThread* thread, methodHandle m); // constructor for method triggering its invocation counter | |
| 109 bool is_interpreted() const { return true; } | |
| 110 methodHandle top_method() const { return _method; } | |
| 111 javaVFrame* top_vframe() const { return _vf; } | |
| 112 int cost() const; | |
| 113 void print(); | |
| 114 }; | |
| 115 | |
| 116 // treat deoptimized frames as interpreted | |
| 117 class DeoptimizedRFrame : public InterpretedRFrame { | |
| 118 protected: | |
| 119 DeoptimizedRFrame(frame fr, JavaThread* thread, RFrame*const callee); | |
| 120 friend class RFrame; | |
| 121 public: | |
| 122 void print(); | |
| 123 }; | |
| 124 | |
| 125 #endif // SHARE_VM_RUNTIME_RFRAME_HPP |
