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annotate src/share/vm/runtime/rframe.hpp @ 21195:a4b60873851b
LIRKind: add #merge().
author | Josef Eisl <josef.eisl@jku.at> |
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date | Thu, 23 Apr 2015 11:30:06 +0200 |
parents | da91efe96a93 |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 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 | |
0 | 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 | |
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72 static int computeSends(Method* m); |
0 | 73 static int computeSends(nmethod* nm); |
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74 static int computeCumulSends(Method* m); |
0 | 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 }; | |
1972 | 124 |
125 #endif // SHARE_VM_RUNTIME_RFRAME_HPP |