Mercurial > hg > truffle
comparison src/share/vm/ci/ciMethodData.hpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
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children | 48a3fa21394b |
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1 /* | |
2 * Copyright 2001-2007 Sun Microsystems, Inc. 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 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 ciBitData; | |
26 class ciCounterData; | |
27 class ciJumpData; | |
28 class ciReceiverTypeData; | |
29 class ciRetData; | |
30 class ciBranchData; | |
31 class ciArrayData; | |
32 class ciMultiBranchData; | |
33 | |
34 typedef ProfileData ciProfileData; | |
35 | |
36 class ciBitData : public BitData { | |
37 public: | |
38 ciBitData(DataLayout* layout) : BitData(layout) {}; | |
39 }; | |
40 | |
41 class ciCounterData : public CounterData { | |
42 public: | |
43 ciCounterData(DataLayout* layout) : CounterData(layout) {}; | |
44 }; | |
45 | |
46 class ciJumpData : public JumpData { | |
47 public: | |
48 ciJumpData(DataLayout* layout) : JumpData(layout) {}; | |
49 }; | |
50 | |
51 class ciReceiverTypeData : public ReceiverTypeData { | |
52 public: | |
53 ciReceiverTypeData(DataLayout* layout) : ReceiverTypeData(layout) {}; | |
54 | |
55 void set_receiver(uint row, ciKlass* recv) { | |
56 assert((uint)row < row_limit(), "oob"); | |
57 set_intptr_at(receiver0_offset + row * receiver_type_row_cell_count, | |
58 (intptr_t) recv); | |
59 } | |
60 | |
61 ciKlass* receiver(uint row) { | |
62 assert((uint)row < row_limit(), "oob"); | |
63 ciObject* recv = (ciObject*)intptr_at(receiver0_offset + row * receiver_type_row_cell_count); | |
64 assert(recv == NULL || recv->is_klass(), "wrong type"); | |
65 return (ciKlass*)recv; | |
66 } | |
67 | |
68 // Copy & translate from oop based ReceiverTypeData | |
69 virtual void translate_from(ProfileData* data) { | |
70 translate_receiver_data_from(data); | |
71 } | |
72 void translate_receiver_data_from(ProfileData* data); | |
73 #ifndef PRODUCT | |
74 void print_data_on(outputStream* st); | |
75 void print_receiver_data_on(outputStream* st); | |
76 #endif | |
77 }; | |
78 | |
79 class ciVirtualCallData : public VirtualCallData { | |
80 // Fake multiple inheritance... It's a ciReceiverTypeData also. | |
81 ciReceiverTypeData* rtd_super() { return (ciReceiverTypeData*) this; } | |
82 | |
83 public: | |
84 ciVirtualCallData(DataLayout* layout) : VirtualCallData(layout) {}; | |
85 | |
86 void set_receiver(uint row, ciKlass* recv) { | |
87 rtd_super()->set_receiver(row, recv); | |
88 } | |
89 | |
90 ciKlass* receiver(uint row) { | |
91 return rtd_super()->receiver(row); | |
92 } | |
93 | |
94 // Copy & translate from oop based VirtualCallData | |
95 virtual void translate_from(ProfileData* data) { | |
96 rtd_super()->translate_receiver_data_from(data); | |
97 } | |
98 #ifndef PRODUCT | |
99 void print_data_on(outputStream* st); | |
100 #endif | |
101 }; | |
102 | |
103 | |
104 class ciRetData : public RetData { | |
105 public: | |
106 ciRetData(DataLayout* layout) : RetData(layout) {}; | |
107 }; | |
108 | |
109 class ciBranchData : public BranchData { | |
110 public: | |
111 ciBranchData(DataLayout* layout) : BranchData(layout) {}; | |
112 }; | |
113 | |
114 class ciArrayData : public ArrayData { | |
115 public: | |
116 ciArrayData(DataLayout* layout) : ArrayData(layout) {}; | |
117 }; | |
118 | |
119 class ciMultiBranchData : public MultiBranchData { | |
120 public: | |
121 ciMultiBranchData(DataLayout* layout) : MultiBranchData(layout) {}; | |
122 }; | |
123 | |
124 // ciMethodData | |
125 // | |
126 // This class represents a methodDataOop in the HotSpot virtual | |
127 // machine. | |
128 | |
129 class ciMethodData : public ciObject { | |
130 CI_PACKAGE_ACCESS | |
131 | |
132 private: | |
133 // Size in bytes | |
134 int _data_size; | |
135 int _extra_data_size; | |
136 | |
137 // Data entries | |
138 intptr_t* _data; | |
139 | |
140 // Cached hint for data_before() | |
141 int _hint_di; | |
142 | |
143 // Is data attached? And is it mature? | |
144 enum { empty_state, immature_state, mature_state }; | |
145 u_char _state; | |
146 | |
147 // Set this true if empty extra_data slots are ever witnessed. | |
148 u_char _saw_free_extra_data; | |
149 | |
150 // Support for interprocedural escape analysis | |
151 intx _eflags; // flags on escape information | |
152 intx _arg_local; // bit set of non-escaping arguments | |
153 intx _arg_stack; // bit set of stack-allocatable arguments | |
154 intx _arg_returned; // bit set of returned arguments | |
155 | |
156 // Maturity of the oop when the snapshot is taken. | |
157 int _current_mileage; | |
158 | |
159 // Coherent snapshot of original header. | |
160 methodDataOopDesc _orig; | |
161 | |
162 ciMethodData(methodDataHandle h_md); | |
163 ciMethodData(); | |
164 | |
165 // Accessors | |
166 int data_size() { return _data_size; } | |
167 int extra_data_size() { return _extra_data_size; } | |
168 intptr_t * data() { return _data; } | |
169 | |
170 methodDataOop get_methodDataOop() const { | |
171 if (handle() == NULL) return NULL; | |
172 methodDataOop mdo = (methodDataOop)get_oop(); | |
173 assert(mdo != NULL, "illegal use of unloaded method data"); | |
174 return mdo; | |
175 } | |
176 | |
177 const char* type_string() { return "ciMethodData"; } | |
178 | |
179 void print_impl(outputStream* st); | |
180 | |
181 DataLayout* data_layout_at(int data_index) { | |
182 assert(data_index % sizeof(intptr_t) == 0, "unaligned"); | |
183 return (DataLayout*) (((address)_data) + data_index); | |
184 } | |
185 | |
186 bool out_of_bounds(int data_index) { | |
187 return data_index >= data_size(); | |
188 } | |
189 | |
190 // hint accessors | |
191 int hint_di() const { return _hint_di; } | |
192 void set_hint_di(int di) { | |
193 assert(!out_of_bounds(di), "hint_di out of bounds"); | |
194 _hint_di = di; | |
195 } | |
196 ciProfileData* data_before(int bci) { | |
197 // avoid SEGV on this edge case | |
198 if (data_size() == 0) | |
199 return NULL; | |
200 int hint = hint_di(); | |
201 if (data_layout_at(hint)->bci() <= bci) | |
202 return data_at(hint); | |
203 return first_data(); | |
204 } | |
205 | |
206 | |
207 // What is the index of the first data entry? | |
208 int first_di() { return 0; } | |
209 | |
210 public: | |
211 bool is_method_data() { return true; } | |
212 bool is_empty() { return _state == empty_state; } | |
213 bool is_mature() { return _state == mature_state; } | |
214 | |
215 int creation_mileage() { return _orig.creation_mileage(); } | |
216 int current_mileage() { return _current_mileage; } | |
217 | |
218 void load_data(); | |
219 | |
220 // Convert a dp (data pointer) to a di (data index). | |
221 int dp_to_di(address dp) { | |
222 return dp - ((address)_data); | |
223 } | |
224 | |
225 // Get the data at an arbitrary (sort of) data index. | |
226 ciProfileData* data_at(int data_index); | |
227 | |
228 // Walk through the data in order. | |
229 ciProfileData* first_data() { return data_at(first_di()); } | |
230 ciProfileData* next_data(ciProfileData* current); | |
231 bool is_valid(ciProfileData* current) { return current != NULL; } | |
232 | |
233 // Get the data at an arbitrary bci, or NULL if there is none. | |
234 ciProfileData* bci_to_data(int bci); | |
235 ciProfileData* bci_to_extra_data(int bci, bool create_if_missing); | |
236 | |
237 uint overflow_trap_count() const { | |
238 return _orig.overflow_trap_count(); | |
239 } | |
240 uint overflow_recompile_count() const { | |
241 return _orig.overflow_recompile_count(); | |
242 } | |
243 uint decompile_count() const { | |
244 return _orig.decompile_count(); | |
245 } | |
246 uint trap_count(int reason) const { | |
247 return _orig.trap_count(reason); | |
248 } | |
249 uint trap_reason_limit() const { return _orig.trap_reason_limit(); } | |
250 uint trap_count_limit() const { return _orig.trap_count_limit(); } | |
251 | |
252 // Helpful query functions that decode trap_state. | |
253 int has_trap_at(ciProfileData* data, int reason); | |
254 int has_trap_at(int bci, int reason) { | |
255 return has_trap_at(bci_to_data(bci), reason); | |
256 } | |
257 int trap_recompiled_at(ciProfileData* data); | |
258 int trap_recompiled_at(int bci) { | |
259 return trap_recompiled_at(bci_to_data(bci)); | |
260 } | |
261 | |
262 void clear_escape_info(); | |
263 bool has_escape_info(); | |
264 void update_escape_info(); | |
265 | |
266 void set_eflag(methodDataOopDesc::EscapeFlag f); | |
267 void clear_eflag(methodDataOopDesc::EscapeFlag f); | |
268 bool eflag_set(methodDataOopDesc::EscapeFlag f) const; | |
269 | |
270 void set_arg_local(int i); | |
271 void set_arg_stack(int i); | |
272 void set_arg_returned(int i); | |
273 | |
274 bool is_arg_local(int i) const; | |
275 bool is_arg_stack(int i) const; | |
276 bool is_arg_returned(int i) const; | |
277 | |
278 // Code generation helper | |
279 ByteSize offset_of_slot(ciProfileData* data, ByteSize slot_offset_in_data); | |
280 int byte_offset_of_slot(ciProfileData* data, ByteSize slot_offset_in_data) { return in_bytes(offset_of_slot(data, slot_offset_in_data)); } | |
281 | |
282 #ifndef PRODUCT | |
283 // printing support for method data | |
284 void print(); | |
285 void print_data_on(outputStream* st); | |
286 #endif | |
287 }; |