Mercurial > hg > truffle
annotate src/share/vm/runtime/vframeArray.hpp @ 20804:7848fc12602b
Merge with jdk8u40-b25
| author | Gilles Duboscq <gilles.m.duboscq@oracle.com> |
|---|---|
| date | Tue, 07 Apr 2015 14:58:49 +0200 |
| parents | 52b4284cb496 d3f3f7677537 |
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| rev | line source |
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| 0 | 1 /* |
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2 * Copyright (c) 1997, 2013, 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 { | |
| 3939 | 50 friend class VMStructs; |
| 51 | |
| 0 | 52 private: |
| 53 | |
| 54 frame _frame; // the interpreter frame we will unpack into | |
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55 int _bci; // raw bci for this vframe |
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56 bool _reexecute; // whether sould we reexecute this bytecode |
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57 Method* _method; // the method for this vframe |
| 0 | 58 MonitorChunk* _monitors; // active monitors for this vframe |
| 59 StackValueCollection* _locals; | |
| 60 StackValueCollection* _expressions; | |
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61 #ifdef ASSERT |
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62 bool _removed_monitors; |
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63 #endif |
| 0 | 64 |
| 65 public: | |
| 66 | |
| 67 frame* iframe(void) { return &_frame; } | |
| 68 | |
| 69 int bci(void) const; | |
| 70 | |
| 71 int raw_bci(void) const { return _bci; } | |
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72 bool should_reexecute(void) const { return _reexecute; } |
| 0 | 73 |
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74 Method* method(void) const { return _method; } |
| 0 | 75 |
| 76 MonitorChunk* monitors(void) const { return _monitors; } | |
| 77 | |
| 78 void free_monitors(JavaThread* jt); | |
| 79 | |
| 80 StackValueCollection* locals(void) const { return _locals; } | |
| 81 | |
| 82 StackValueCollection* expressions(void) const { return _expressions; } | |
| 83 | |
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84 void fill_in(compiledVFrame* vf, bool realloc_failures); |
| 0 | 85 |
| 86 // Formerly part of deoptimizedVFrame | |
| 87 | |
| 88 | |
| 89 // Returns the on stack word size for this frame | |
| 90 // callee_parameters is the number of callee locals residing inside this frame | |
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91 int on_stack_size(int callee_parameters, |
| 0 | 92 int callee_locals, |
| 93 bool is_top_frame, | |
| 94 int popframe_extra_stack_expression_els) const; | |
| 95 | |
| 96 // Unpacks the element to skeletal interpreter frame | |
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97 void unpack_on_stack(int caller_actual_parameters, |
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98 int callee_parameters, |
| 0 | 99 int callee_locals, |
| 100 frame* caller, | |
| 101 bool is_top_frame, | |
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102 bool is_bottom_frame, |
| 0 | 103 int exec_mode); |
| 104 | |
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105 #ifdef ASSERT |
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106 void set_removed_monitors() { |
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107 _removed_monitors = true; |
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108 } |
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109 #endif |
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110 |
| 0 | 111 #ifndef PRODUCT |
| 112 void print(outputStream* st); | |
| 113 #endif /* PRODUCT */ | |
| 114 }; | |
| 115 | |
| 116 // this can be a ResourceObj if we don't save the last one... | |
| 117 // but it does make debugging easier even if we can't look | |
| 118 // at the data in each vframeElement | |
| 119 | |
| 6197 | 120 class vframeArray: public CHeapObj<mtCompiler> { |
| 3939 | 121 friend class VMStructs; |
| 122 | |
| 0 | 123 private: |
| 124 | |
| 125 | |
| 126 // Here is what a vframeArray looks like in memory | |
| 127 | |
| 128 /* | |
| 129 fixed part | |
| 130 description of the original frame | |
| 131 _frames - number of vframes in this array | |
| 132 adapter info | |
| 133 callee register save area | |
| 134 variable part | |
| 135 vframeArrayElement [ 0 ] | |
| 136 ... | |
| 137 vframeArrayElement [_frames - 1] | |
| 138 | |
| 139 */ | |
| 140 | |
| 141 JavaThread* _owner_thread; | |
| 142 vframeArray* _next; | |
| 143 frame _original; // the original frame of the deoptee | |
| 144 frame _caller; // caller of root frame in vframeArray | |
| 145 frame _sender; | |
| 146 | |
| 147 Deoptimization::UnrollBlock* _unroll_block; | |
| 148 int _frame_size; | |
| 149 | |
| 150 int _frames; // number of javavframes in the array (does not count any adapter) | |
| 151 | |
| 152 intptr_t _callee_registers[RegisterMap::reg_count]; | |
| 153 unsigned char _valid[RegisterMap::reg_count]; | |
| 154 | |
| 155 vframeArrayElement _elements[1]; // First variable section. | |
| 156 | |
| 157 void fill_in_element(int index, compiledVFrame* vf); | |
| 158 | |
| 159 bool is_location_valid(int i) const { return _valid[i] != 0; } | |
| 160 void set_location_valid(int i, bool valid) { _valid[i] = valid; } | |
| 161 | |
| 162 public: | |
| 163 | |
| 164 | |
| 165 // Tells whether index is within bounds. | |
| 166 bool is_within_bounds(int index) const { return 0 <= index && index < frames(); } | |
| 167 | |
| 168 // Accessores for instance variable | |
| 169 int frames() const { return _frames; } | |
| 170 | |
| 171 static vframeArray* allocate(JavaThread* thread, int frame_size, GrowableArray<compiledVFrame*>* chunk, | |
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172 RegisterMap* reg_map, frame sender, frame caller, frame self, |
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173 bool realloc_failures); |
| 0 | 174 |
| 175 | |
| 176 vframeArrayElement* element(int index) { assert(is_within_bounds(index), "Bad index"); return &_elements[index]; } | |
| 177 | |
| 178 // Allocates a new vframe in the array and fills the array with vframe information in chunk | |
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179 void fill_in(JavaThread* thread, int frame_size, GrowableArray<compiledVFrame*>* chunk, const RegisterMap *reg_map, bool realloc_failures); |
| 0 | 180 |
| 181 // Returns the owner of this vframeArray | |
| 182 JavaThread* owner_thread() const { return _owner_thread; } | |
| 183 | |
| 184 // Accessors for next | |
| 185 vframeArray* next() const { return _next; } | |
| 186 void set_next(vframeArray* value) { _next = value; } | |
| 187 | |
| 188 // Accessors for sp | |
| 189 intptr_t* sp() const { return _original.sp(); } | |
| 190 | |
| 191 intptr_t* unextended_sp() const { return _original.unextended_sp(); } | |
| 192 | |
| 193 address original_pc() const { return _original.pc(); } | |
| 194 | |
| 195 frame original() const { return _original; } | |
| 196 | |
| 197 frame caller() const { return _caller; } | |
| 198 | |
| 199 frame sender() const { return _sender; } | |
| 200 | |
| 201 // Accessors for unroll block | |
| 202 Deoptimization::UnrollBlock* unroll_block() const { return _unroll_block; } | |
| 203 void set_unroll_block(Deoptimization::UnrollBlock* block) { _unroll_block = block; } | |
| 204 | |
| 205 // Returns the size of the frame that got deoptimized | |
| 206 int frame_size() const { return _frame_size; } | |
| 207 | |
| 208 // Unpack the array on the stack passed in stack interval | |
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209 void unpack_to_stack(frame &unpack_frame, int exec_mode, int caller_actual_parameters); |
| 0 | 210 |
| 211 // Deallocates monitor chunks allocated during deoptimization. | |
| 212 // This should be called when the array is not used anymore. | |
| 213 void deallocate_monitor_chunks(); | |
| 214 | |
| 215 | |
| 216 | |
| 217 // Accessor for register map | |
| 218 address register_location(int i) const; | |
| 219 | |
| 220 void print_on_2(outputStream* st) PRODUCT_RETURN; | |
| 221 void print_value_on(outputStream* st) const PRODUCT_RETURN; | |
| 222 | |
| 223 #ifndef PRODUCT | |
| 224 // Comparing | |
| 225 bool structural_compare(JavaThread* thread, GrowableArray<compiledVFrame*>* chunk); | |
| 226 #endif | |
| 227 | |
| 228 }; | |
| 1972 | 229 |
| 230 #endif // SHARE_VM_RUNTIME_VFRAMEARRAY_HPP |