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annotate src/share/vm/ci/ciMethodData.hpp @ 6822:f6b0eb4e44cf
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Reviewed-by: jrose, kvn
author | twisti |
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date | Mon, 01 Oct 2012 14:50:10 -0700 |
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0 | 1 /* |
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2 * Copyright (c) 2001, 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_CI_CIMETHODDATA_HPP |
26 #define SHARE_VM_CI_CIMETHODDATA_HPP | |
27 | |
28 #include "ci/ciClassList.hpp" | |
29 #include "ci/ciKlass.hpp" | |
30 #include "ci/ciObject.hpp" | |
31 #include "ci/ciUtilities.hpp" | |
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32 #include "oops/methodData.hpp" |
1972 | 33 #include "oops/oop.inline.hpp" |
34 | |
0 | 35 class ciBitData; |
36 class ciCounterData; | |
37 class ciJumpData; | |
38 class ciReceiverTypeData; | |
39 class ciRetData; | |
40 class ciBranchData; | |
41 class ciArrayData; | |
42 class ciMultiBranchData; | |
45
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43 class ciArgInfoData; |
0 | 44 |
45 typedef ProfileData ciProfileData; | |
46 | |
47 class ciBitData : public BitData { | |
48 public: | |
49 ciBitData(DataLayout* layout) : BitData(layout) {}; | |
50 }; | |
51 | |
52 class ciCounterData : public CounterData { | |
53 public: | |
54 ciCounterData(DataLayout* layout) : CounterData(layout) {}; | |
55 }; | |
56 | |
57 class ciJumpData : public JumpData { | |
58 public: | |
59 ciJumpData(DataLayout* layout) : JumpData(layout) {}; | |
60 }; | |
61 | |
62 class ciReceiverTypeData : public ReceiverTypeData { | |
63 public: | |
64 ciReceiverTypeData(DataLayout* layout) : ReceiverTypeData(layout) {}; | |
65 | |
66 void set_receiver(uint row, ciKlass* recv) { | |
67 assert((uint)row < row_limit(), "oob"); | |
68 set_intptr_at(receiver0_offset + row * receiver_type_row_cell_count, | |
69 (intptr_t) recv); | |
70 } | |
71 | |
72 ciKlass* receiver(uint row) { | |
73 assert((uint)row < row_limit(), "oob"); | |
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74 ciKlass* recv = (ciKlass*)intptr_at(receiver0_offset + row * receiver_type_row_cell_count); |
0 | 75 assert(recv == NULL || recv->is_klass(), "wrong type"); |
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76 return recv; |
0 | 77 } |
78 | |
79 // Copy & translate from oop based ReceiverTypeData | |
80 virtual void translate_from(ProfileData* data) { | |
81 translate_receiver_data_from(data); | |
82 } | |
83 void translate_receiver_data_from(ProfileData* data); | |
84 #ifndef PRODUCT | |
85 void print_data_on(outputStream* st); | |
86 void print_receiver_data_on(outputStream* st); | |
87 #endif | |
88 }; | |
89 | |
90 class ciVirtualCallData : public VirtualCallData { | |
91 // Fake multiple inheritance... It's a ciReceiverTypeData also. | |
92 ciReceiverTypeData* rtd_super() { return (ciReceiverTypeData*) this; } | |
93 | |
94 public: | |
95 ciVirtualCallData(DataLayout* layout) : VirtualCallData(layout) {}; | |
96 | |
97 void set_receiver(uint row, ciKlass* recv) { | |
98 rtd_super()->set_receiver(row, recv); | |
99 } | |
100 | |
101 ciKlass* receiver(uint row) { | |
102 return rtd_super()->receiver(row); | |
103 } | |
104 | |
105 // Copy & translate from oop based VirtualCallData | |
106 virtual void translate_from(ProfileData* data) { | |
107 rtd_super()->translate_receiver_data_from(data); | |
108 } | |
109 #ifndef PRODUCT | |
110 void print_data_on(outputStream* st); | |
111 #endif | |
112 }; | |
113 | |
114 | |
115 class ciRetData : public RetData { | |
116 public: | |
117 ciRetData(DataLayout* layout) : RetData(layout) {}; | |
118 }; | |
119 | |
120 class ciBranchData : public BranchData { | |
121 public: | |
122 ciBranchData(DataLayout* layout) : BranchData(layout) {}; | |
123 }; | |
124 | |
125 class ciArrayData : public ArrayData { | |
126 public: | |
127 ciArrayData(DataLayout* layout) : ArrayData(layout) {}; | |
128 }; | |
129 | |
130 class ciMultiBranchData : public MultiBranchData { | |
131 public: | |
132 ciMultiBranchData(DataLayout* layout) : MultiBranchData(layout) {}; | |
133 }; | |
134 | |
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135 class ciArgInfoData : public ArgInfoData { |
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136 public: |
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137 ciArgInfoData(DataLayout* layout) : ArgInfoData(layout) {}; |
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138 }; |
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139 |
0 | 140 // ciMethodData |
141 // | |
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142 // This class represents a MethodData* in the HotSpot virtual |
0 | 143 // machine. |
144 | |
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145 class ciMethodData : public ciMetadata { |
0 | 146 CI_PACKAGE_ACCESS |
147 | |
148 private: | |
149 // Size in bytes | |
150 int _data_size; | |
151 int _extra_data_size; | |
152 | |
153 // Data entries | |
154 intptr_t* _data; | |
155 | |
156 // Cached hint for data_before() | |
157 int _hint_di; | |
158 | |
159 // Is data attached? And is it mature? | |
160 enum { empty_state, immature_state, mature_state }; | |
161 u_char _state; | |
162 | |
163 // Set this true if empty extra_data slots are ever witnessed. | |
164 u_char _saw_free_extra_data; | |
165 | |
166 // Support for interprocedural escape analysis | |
167 intx _eflags; // flags on escape information | |
168 intx _arg_local; // bit set of non-escaping arguments | |
169 intx _arg_stack; // bit set of stack-allocatable arguments | |
170 intx _arg_returned; // bit set of returned arguments | |
171 | |
172 // Maturity of the oop when the snapshot is taken. | |
173 int _current_mileage; | |
174 | |
1783 | 175 // These counters hold the age of MDO in tiered. In tiered we can have the same method |
176 // running at different compilation levels concurrently. So, in order to precisely measure | |
177 // its maturity we need separate counters. | |
178 int _invocation_counter; | |
179 int _backedge_counter; | |
180 | |
0 | 181 // Coherent snapshot of original header. |
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182 MethodData _orig; |
0 | 183 |
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184 ciMethodData(MethodData* md); |
0 | 185 ciMethodData(); |
186 | |
187 // Accessors | |
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188 int data_size() const { return _data_size; } |
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189 int extra_data_size() const { return _extra_data_size; } |
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190 intptr_t * data() const { return _data; } |
0 | 191 |
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192 MethodData* get_MethodData() const { |
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193 return (MethodData*)_metadata; |
0 | 194 } |
195 | |
196 const char* type_string() { return "ciMethodData"; } | |
197 | |
198 void print_impl(outputStream* st); | |
199 | |
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200 DataLayout* data_layout_at(int data_index) const { |
0 | 201 assert(data_index % sizeof(intptr_t) == 0, "unaligned"); |
202 return (DataLayout*) (((address)_data) + data_index); | |
203 } | |
204 | |
205 bool out_of_bounds(int data_index) { | |
206 return data_index >= data_size(); | |
207 } | |
208 | |
209 // hint accessors | |
210 int hint_di() const { return _hint_di; } | |
211 void set_hint_di(int di) { | |
212 assert(!out_of_bounds(di), "hint_di out of bounds"); | |
213 _hint_di = di; | |
214 } | |
215 ciProfileData* data_before(int bci) { | |
216 // avoid SEGV on this edge case | |
217 if (data_size() == 0) | |
218 return NULL; | |
219 int hint = hint_di(); | |
220 if (data_layout_at(hint)->bci() <= bci) | |
221 return data_at(hint); | |
222 return first_data(); | |
223 } | |
224 | |
225 | |
226 // What is the index of the first data entry? | |
227 int first_di() { return 0; } | |
228 | |
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229 ciArgInfoData *arg_info() const; |
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230 |
0 | 231 public: |
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232 bool is_method_data() const { return true; } |
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233 |
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234 void set_mature() { _state = mature_state; } |
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235 |
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236 bool is_empty() { return _state == empty_state; } |
0 | 237 bool is_mature() { return _state == mature_state; } |
238 | |
239 int creation_mileage() { return _orig.creation_mileage(); } | |
240 int current_mileage() { return _current_mileage; } | |
241 | |
1783 | 242 int invocation_count() { return _invocation_counter; } |
243 int backedge_count() { return _backedge_counter; } | |
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244 // Transfer information about the method to MethodData*. |
1783 | 245 // would_profile means we would like to profile this method, |
246 // meaning it's not trivial. | |
247 void set_would_profile(bool p); | |
248 // Also set the numer of loops and blocks in the method. | |
249 // Again, this is used to determine if a method is trivial. | |
250 void set_compilation_stats(short loops, short blocks); | |
251 | |
0 | 252 void load_data(); |
253 | |
254 // Convert a dp (data pointer) to a di (data index). | |
255 int dp_to_di(address dp) { | |
256 return dp - ((address)_data); | |
257 } | |
258 | |
259 // Get the data at an arbitrary (sort of) data index. | |
260 ciProfileData* data_at(int data_index); | |
261 | |
262 // Walk through the data in order. | |
263 ciProfileData* first_data() { return data_at(first_di()); } | |
264 ciProfileData* next_data(ciProfileData* current); | |
265 bool is_valid(ciProfileData* current) { return current != NULL; } | |
266 | |
267 // Get the data at an arbitrary bci, or NULL if there is none. | |
268 ciProfileData* bci_to_data(int bci); | |
269 ciProfileData* bci_to_extra_data(int bci, bool create_if_missing); | |
270 | |
271 uint overflow_trap_count() const { | |
272 return _orig.overflow_trap_count(); | |
273 } | |
274 uint overflow_recompile_count() const { | |
275 return _orig.overflow_recompile_count(); | |
276 } | |
277 uint decompile_count() const { | |
278 return _orig.decompile_count(); | |
279 } | |
280 uint trap_count(int reason) const { | |
281 return _orig.trap_count(reason); | |
282 } | |
283 uint trap_reason_limit() const { return _orig.trap_reason_limit(); } | |
284 uint trap_count_limit() const { return _orig.trap_count_limit(); } | |
285 | |
286 // Helpful query functions that decode trap_state. | |
287 int has_trap_at(ciProfileData* data, int reason); | |
288 int has_trap_at(int bci, int reason) { | |
289 return has_trap_at(bci_to_data(bci), reason); | |
290 } | |
291 int trap_recompiled_at(ciProfileData* data); | |
292 int trap_recompiled_at(int bci) { | |
293 return trap_recompiled_at(bci_to_data(bci)); | |
294 } | |
295 | |
296 void clear_escape_info(); | |
297 bool has_escape_info(); | |
298 void update_escape_info(); | |
299 | |
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300 void set_eflag(MethodData::EscapeFlag f); |
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301 void clear_eflag(MethodData::EscapeFlag f); |
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302 bool eflag_set(MethodData::EscapeFlag f) const; |
0 | 303 |
304 void set_arg_local(int i); | |
305 void set_arg_stack(int i); | |
306 void set_arg_returned(int i); | |
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307 void set_arg_modified(int arg, uint val); |
0 | 308 |
309 bool is_arg_local(int i) const; | |
310 bool is_arg_stack(int i) const; | |
311 bool is_arg_returned(int i) const; | |
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312 uint arg_modified(int arg) const; |
0 | 313 |
314 // Code generation helper | |
315 ByteSize offset_of_slot(ciProfileData* data, ByteSize slot_offset_in_data); | |
316 int byte_offset_of_slot(ciProfileData* data, ByteSize slot_offset_in_data) { return in_bytes(offset_of_slot(data, slot_offset_in_data)); } | |
317 | |
318 #ifndef PRODUCT | |
319 // printing support for method data | |
320 void print(); | |
321 void print_data_on(outputStream* st); | |
322 #endif | |
323 }; | |
1972 | 324 |
325 #endif // SHARE_VM_CI_CIMETHODDATA_HPP |