Mercurial > hg > truffle
annotate src/share/vm/runtime/vframeArray.hpp @ 2831:f072013daba9
Added lookup method.
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Tue, 31 May 2011 11:32:48 +0200 |
parents | f95d63e2154a |
children | 3d2ab563047a |
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0 | 1 /* |
1972 | 2 * Copyright (c) 1997, 2010, 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_VFRAMEARRAY_HPP |
26 #define SHARE_VM_RUNTIME_VFRAMEARRAY_HPP | |
27 | |
28 #include "oops/arrayOop.hpp" | |
29 #include "runtime/deoptimization.hpp" | |
30 #include "runtime/frame.inline.hpp" | |
31 #include "runtime/monitorChunk.hpp" | |
32 #include "utilities/growableArray.hpp" | |
33 | |
0 | 34 // A vframeArray is an array used for momentarily storing off stack Java method activations |
35 // during deoptimization. Essentially it is an array of vframes where each vframe | |
36 // data is stored off stack. This structure will never exist across a safepoint so | |
37 // there is no need to gc any oops that are stored in the structure. | |
38 | |
39 | |
40 class LocalsClosure; | |
41 class ExpressionStackClosure; | |
42 class MonitorStackClosure; | |
43 class MonitorArrayElement; | |
44 class StackValueCollection; | |
45 | |
46 // A vframeArrayElement is an element of a vframeArray. Each element | |
47 // represent an interpreter frame which will eventually be created. | |
48 | |
49 class vframeArrayElement : public _ValueObj { | |
50 private: | |
51 | |
52 frame _frame; // the interpreter frame we will unpack into | |
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53 int _bci; // raw bci for this vframe |
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54 bool _reexecute; // whether sould we reexecute this bytecode |
0 | 55 methodOop _method; // the method for this vframe |
56 MonitorChunk* _monitors; // active monitors for this vframe | |
57 StackValueCollection* _locals; | |
58 StackValueCollection* _expressions; | |
59 | |
60 public: | |
61 | |
62 frame* iframe(void) { return &_frame; } | |
63 | |
64 int bci(void) const; | |
65 | |
66 int raw_bci(void) const { return _bci; } | |
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67 bool should_reexecute(void) const { return _reexecute; } |
0 | 68 |
69 methodOop method(void) const { return _method; } | |
70 | |
71 MonitorChunk* monitors(void) const { return _monitors; } | |
72 | |
73 void free_monitors(JavaThread* jt); | |
74 | |
75 StackValueCollection* locals(void) const { return _locals; } | |
76 | |
77 StackValueCollection* expressions(void) const { return _expressions; } | |
78 | |
79 void fill_in(compiledVFrame* vf); | |
80 | |
81 // Formerly part of deoptimizedVFrame | |
82 | |
83 | |
84 // Returns the on stack word size for this frame | |
85 // callee_parameters is the number of callee locals residing inside this frame | |
86 int on_stack_size(int callee_parameters, | |
87 int callee_locals, | |
88 bool is_top_frame, | |
89 int popframe_extra_stack_expression_els) const; | |
90 | |
91 // Unpacks the element to skeletal interpreter frame | |
92 void unpack_on_stack(int callee_parameters, | |
93 int callee_locals, | |
94 frame* caller, | |
95 bool is_top_frame, | |
96 int exec_mode); | |
97 | |
98 #ifndef PRODUCT | |
99 void print(outputStream* st); | |
100 #endif /* PRODUCT */ | |
101 }; | |
102 | |
103 // this can be a ResourceObj if we don't save the last one... | |
104 // but it does make debugging easier even if we can't look | |
105 // at the data in each vframeElement | |
106 | |
107 class vframeArray: public CHeapObj { | |
108 private: | |
109 | |
110 | |
111 // Here is what a vframeArray looks like in memory | |
112 | |
113 /* | |
114 fixed part | |
115 description of the original frame | |
116 _frames - number of vframes in this array | |
117 adapter info | |
118 callee register save area | |
119 variable part | |
120 vframeArrayElement [ 0 ] | |
121 ... | |
122 vframeArrayElement [_frames - 1] | |
123 | |
124 */ | |
125 | |
126 JavaThread* _owner_thread; | |
127 vframeArray* _next; | |
128 frame _original; // the original frame of the deoptee | |
129 frame _caller; // caller of root frame in vframeArray | |
130 frame _sender; | |
131 | |
132 Deoptimization::UnrollBlock* _unroll_block; | |
133 int _frame_size; | |
134 | |
135 int _frames; // number of javavframes in the array (does not count any adapter) | |
136 | |
137 intptr_t _callee_registers[RegisterMap::reg_count]; | |
138 unsigned char _valid[RegisterMap::reg_count]; | |
139 | |
140 vframeArrayElement _elements[1]; // First variable section. | |
141 | |
142 void fill_in_element(int index, compiledVFrame* vf); | |
143 | |
144 bool is_location_valid(int i) const { return _valid[i] != 0; } | |
145 void set_location_valid(int i, bool valid) { _valid[i] = valid; } | |
146 | |
147 public: | |
148 | |
149 | |
150 // Tells whether index is within bounds. | |
151 bool is_within_bounds(int index) const { return 0 <= index && index < frames(); } | |
152 | |
153 // Accessores for instance variable | |
154 int frames() const { return _frames; } | |
155 | |
156 static vframeArray* allocate(JavaThread* thread, int frame_size, GrowableArray<compiledVFrame*>* chunk, | |
157 RegisterMap* reg_map, frame sender, frame caller, frame self); | |
158 | |
159 | |
160 vframeArrayElement* element(int index) { assert(is_within_bounds(index), "Bad index"); return &_elements[index]; } | |
161 | |
162 // Allocates a new vframe in the array and fills the array with vframe information in chunk | |
163 void fill_in(JavaThread* thread, int frame_size, GrowableArray<compiledVFrame*>* chunk, const RegisterMap *reg_map); | |
164 | |
165 // Returns the owner of this vframeArray | |
166 JavaThread* owner_thread() const { return _owner_thread; } | |
167 | |
168 // Accessors for next | |
169 vframeArray* next() const { return _next; } | |
170 void set_next(vframeArray* value) { _next = value; } | |
171 | |
172 // Accessors for sp | |
173 intptr_t* sp() const { return _original.sp(); } | |
174 | |
175 intptr_t* unextended_sp() const { return _original.unextended_sp(); } | |
176 | |
177 address original_pc() const { return _original.pc(); } | |
178 | |
179 frame original() const { return _original; } | |
180 | |
181 frame caller() const { return _caller; } | |
182 | |
183 frame sender() const { return _sender; } | |
184 | |
185 // Accessors for unroll block | |
186 Deoptimization::UnrollBlock* unroll_block() const { return _unroll_block; } | |
187 void set_unroll_block(Deoptimization::UnrollBlock* block) { _unroll_block = block; } | |
188 | |
189 // Returns the size of the frame that got deoptimized | |
190 int frame_size() const { return _frame_size; } | |
191 | |
192 // Unpack the array on the stack passed in stack interval | |
193 void unpack_to_stack(frame &unpack_frame, int exec_mode); | |
194 | |
195 // Deallocates monitor chunks allocated during deoptimization. | |
196 // This should be called when the array is not used anymore. | |
197 void deallocate_monitor_chunks(); | |
198 | |
199 | |
200 | |
201 // Accessor for register map | |
202 address register_location(int i) const; | |
203 | |
204 void print_on_2(outputStream* st) PRODUCT_RETURN; | |
205 void print_value_on(outputStream* st) const PRODUCT_RETURN; | |
206 | |
207 #ifndef PRODUCT | |
208 // Comparing | |
209 bool structural_compare(JavaThread* thread, GrowableArray<compiledVFrame*>* chunk); | |
210 #endif | |
211 | |
212 }; | |
1972 | 213 |
214 #endif // SHARE_VM_RUNTIME_VFRAMEARRAY_HPP |