Mercurial > hg > truffle
annotate src/share/vm/oops/methodData.hpp @ 14714:b602356a9cfc
additional canonicalizers for accesses and value nodes (improves number of implicit null checks)
author | Lukas Stadler <lukas.stadler@oracle.com> |
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date | Thu, 20 Mar 2014 17:15:36 +0100 |
parents | b51e29501f30 |
children | 92aa6797d639 |
rev | line source |
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0 | 1 /* |
7956 | 2 * Copyright (c) 2000, 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_OOPS_METHODDATAOOP_HPP |
26 #define SHARE_VM_OOPS_METHODDATAOOP_HPP | |
27 | |
28 #include "interpreter/bytecodes.hpp" | |
29 #include "memory/universe.hpp" | |
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30 #include "oops/method.hpp" |
1972 | 31 #include "oops/oop.hpp" |
32 #include "runtime/orderAccess.hpp" | |
33 | |
0 | 34 class BytecodeStream; |
7956 | 35 class KlassSizeStats; |
0 | 36 |
37 // The MethodData object collects counts and other profile information | |
38 // during zeroth-tier (interpretive) and first-tier execution. | |
39 // The profile is used later by compilation heuristics. Some heuristics | |
40 // enable use of aggressive (or "heroic") optimizations. An aggressive | |
41 // optimization often has a down-side, a corner case that it handles | |
42 // poorly, but which is thought to be rare. The profile provides | |
43 // evidence of this rarity for a given method or even BCI. It allows | |
44 // the compiler to back out of the optimization at places where it | |
45 // has historically been a poor choice. Other heuristics try to use | |
46 // specific information gathered about types observed at a given site. | |
47 // | |
48 // All data in the profile is approximate. It is expected to be accurate | |
49 // on the whole, but the system expects occasional inaccuraces, due to | |
50 // counter overflow, multiprocessor races during data collection, space | |
51 // limitations, missing MDO blocks, etc. Bad or missing data will degrade | |
52 // optimization quality but will not affect correctness. Also, each MDO | |
53 // is marked with its birth-date ("creation_mileage") which can be used | |
54 // to assess the quality ("maturity") of its data. | |
55 // | |
56 // Short (<32-bit) counters are designed to overflow to a known "saturated" | |
57 // state. Also, certain recorded per-BCI events are given one-bit counters | |
58 // which overflow to a saturated state which applied to all counters at | |
59 // that BCI. In other words, there is a small lattice which approximates | |
60 // the ideal of an infinite-precision counter for each event at each BCI, | |
61 // and the lattice quickly "bottoms out" in a state where all counters | |
62 // are taken to be indefinitely large. | |
63 // | |
64 // The reader will find many data races in profile gathering code, starting | |
65 // with invocation counter incrementation. None of these races harm correct | |
66 // execution of the compiled code. | |
67 | |
941 | 68 // forward decl |
69 class ProfileData; | |
70 | |
0 | 71 // DataLayout |
72 // | |
73 // Overlay for generic profiling data. | |
74 class DataLayout VALUE_OBJ_CLASS_SPEC { | |
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75 friend class VMStructs; |
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76 |
0 | 77 private: |
78 // Every data layout begins with a header. This header | |
79 // contains a tag, which is used to indicate the size/layout | |
80 // of the data, 4 bits of flags, which can be used in any way, | |
81 // 4 bits of trap history (none/one reason/many reasons), | |
82 // and a bci, which is used to tie this piece of data to a | |
83 // specific bci in the bytecodes. | |
84 union { | |
85 intptr_t _bits; | |
86 struct { | |
87 u1 _tag; | |
88 u1 _flags; | |
89 u2 _bci; | |
90 } _struct; | |
91 } _header; | |
92 | |
93 // The data layout has an arbitrary number of cells, each sized | |
94 // to accomodate a pointer or an integer. | |
95 intptr_t _cells[1]; | |
96 | |
97 // Some types of data layouts need a length field. | |
98 static bool needs_array_len(u1 tag); | |
99 | |
100 public: | |
101 enum { | |
102 counter_increment = 1 | |
103 }; | |
104 | |
105 enum { | |
106 cell_size = sizeof(intptr_t) | |
107 }; | |
108 | |
109 // Tag values | |
110 enum { | |
111 no_tag, | |
112 bit_data_tag, | |
113 counter_data_tag, | |
114 jump_data_tag, | |
115 receiver_type_data_tag, | |
116 virtual_call_data_tag, | |
117 ret_data_tag, | |
118 branch_data_tag, | |
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119 multi_branch_data_tag, |
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120 arg_info_data_tag, |
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121 call_type_data_tag, |
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122 virtual_call_type_data_tag, |
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123 parameters_type_data_tag, |
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124 speculative_trap_data_tag |
0 | 125 }; |
126 | |
127 enum { | |
128 // The _struct._flags word is formatted as [trap_state:4 | flags:4]. | |
129 // The trap state breaks down further as [recompile:1 | reason:3]. | |
130 // This further breakdown is defined in deoptimization.cpp. | |
131 // See Deoptimization::trap_state_reason for an assert that | |
132 // trap_bits is big enough to hold reasons < Reason_RECORDED_LIMIT. | |
133 // | |
134 // The trap_state is collected only if ProfileTraps is true. | |
135 trap_bits = 1+3, // 3: enough to distinguish [0..Reason_RECORDED_LIMIT]. | |
136 trap_shift = BitsPerByte - trap_bits, | |
137 trap_mask = right_n_bits(trap_bits), | |
138 trap_mask_in_place = (trap_mask << trap_shift), | |
139 flag_limit = trap_shift, | |
140 flag_mask = right_n_bits(flag_limit), | |
141 first_flag = 0 | |
142 }; | |
143 | |
144 // Size computation | |
145 static int header_size_in_bytes() { | |
146 return cell_size; | |
147 } | |
148 static int header_size_in_cells() { | |
149 return 1; | |
150 } | |
151 | |
152 static int compute_size_in_bytes(int cell_count) { | |
153 return header_size_in_bytes() + cell_count * cell_size; | |
154 } | |
155 | |
156 // Initialization | |
157 void initialize(u1 tag, u2 bci, int cell_count); | |
158 | |
159 // Accessors | |
160 u1 tag() { | |
161 return _header._struct._tag; | |
162 } | |
163 | |
164 // Return a few bits of trap state. Range is [0..trap_mask]. | |
165 // The state tells if traps with zero, one, or many reasons have occurred. | |
166 // It also tells whether zero or many recompilations have occurred. | |
167 // The associated trap histogram in the MDO itself tells whether | |
168 // traps are common or not. If a BCI shows that a trap X has | |
169 // occurred, and the MDO shows N occurrences of X, we make the | |
170 // simplifying assumption that all N occurrences can be blamed | |
171 // on that BCI. | |
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172 int trap_state() const { |
0 | 173 return ((_header._struct._flags >> trap_shift) & trap_mask); |
174 } | |
175 | |
176 void set_trap_state(int new_state) { | |
177 assert(ProfileTraps, "used only under +ProfileTraps"); | |
178 uint old_flags = (_header._struct._flags & flag_mask); | |
179 _header._struct._flags = (new_state << trap_shift) | old_flags; | |
180 } | |
181 | |
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182 u1 flags() const { |
0 | 183 return _header._struct._flags; |
184 } | |
185 | |
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186 u2 bci() const { |
0 | 187 return _header._struct._bci; |
188 } | |
189 | |
190 void set_header(intptr_t value) { | |
191 _header._bits = value; | |
192 } | |
193 intptr_t header() { | |
194 return _header._bits; | |
195 } | |
196 void set_cell_at(int index, intptr_t value) { | |
197 _cells[index] = value; | |
198 } | |
199 void release_set_cell_at(int index, intptr_t value) { | |
200 OrderAccess::release_store_ptr(&_cells[index], value); | |
201 } | |
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202 intptr_t cell_at(int index) const { |
0 | 203 return _cells[index]; |
204 } | |
205 | |
206 void set_flag_at(int flag_number) { | |
207 assert(flag_number < flag_limit, "oob"); | |
208 _header._struct._flags |= (0x1 << flag_number); | |
209 } | |
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210 bool flag_at(int flag_number) const { |
0 | 211 assert(flag_number < flag_limit, "oob"); |
212 return (_header._struct._flags & (0x1 << flag_number)) != 0; | |
213 } | |
214 | |
215 // Low-level support for code generation. | |
216 static ByteSize header_offset() { | |
217 return byte_offset_of(DataLayout, _header); | |
218 } | |
219 static ByteSize tag_offset() { | |
220 return byte_offset_of(DataLayout, _header._struct._tag); | |
221 } | |
222 static ByteSize flags_offset() { | |
223 return byte_offset_of(DataLayout, _header._struct._flags); | |
224 } | |
225 static ByteSize bci_offset() { | |
226 return byte_offset_of(DataLayout, _header._struct._bci); | |
227 } | |
228 static ByteSize cell_offset(int index) { | |
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229 return byte_offset_of(DataLayout, _cells) + in_ByteSize(index * cell_size); |
0 | 230 } |
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231 #ifdef CC_INTERP |
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232 static int cell_offset_in_bytes(int index) { |
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233 return (int)offset_of(DataLayout, _cells[index]); |
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234 } |
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235 #endif // CC_INTERP |
0 | 236 // Return a value which, when or-ed as a byte into _flags, sets the flag. |
237 static int flag_number_to_byte_constant(int flag_number) { | |
238 assert(0 <= flag_number && flag_number < flag_limit, "oob"); | |
239 DataLayout temp; temp.set_header(0); | |
240 temp.set_flag_at(flag_number); | |
241 return temp._header._struct._flags; | |
242 } | |
243 // Return a value which, when or-ed as a word into _header, sets the flag. | |
244 static intptr_t flag_mask_to_header_mask(int byte_constant) { | |
245 DataLayout temp; temp.set_header(0); | |
246 temp._header._struct._flags = byte_constant; | |
247 return temp._header._bits; | |
248 } | |
941 | 249 |
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250 ProfileData* data_in(); |
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251 |
941 | 252 // GC support |
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253 void clean_weak_klass_links(BoolObjectClosure* cl); |
0 | 254 }; |
255 | |
256 | |
257 // ProfileData class hierarchy | |
258 class ProfileData; | |
259 class BitData; | |
260 class CounterData; | |
261 class ReceiverTypeData; | |
262 class VirtualCallData; | |
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263 class VirtualCallTypeData; |
0 | 264 class RetData; |
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265 class CallTypeData; |
0 | 266 class JumpData; |
267 class BranchData; | |
268 class ArrayData; | |
269 class MultiBranchData; | |
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270 class ArgInfoData; |
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271 class ParametersTypeData; |
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272 class SpeculativeTrapData; |
0 | 273 |
274 // ProfileData | |
275 // | |
276 // A ProfileData object is created to refer to a section of profiling | |
277 // data in a structured way. | |
278 class ProfileData : public ResourceObj { | |
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279 friend class TypeEntries; |
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280 friend class ReturnTypeEntry; |
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281 friend class TypeStackSlotEntries; |
0 | 282 private: |
283 #ifndef PRODUCT | |
284 enum { | |
285 tab_width_one = 16, | |
286 tab_width_two = 36 | |
287 }; | |
288 #endif // !PRODUCT | |
289 | |
290 // This is a pointer to a section of profiling data. | |
291 DataLayout* _data; | |
292 | |
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293 char* print_data_on_helper(const MethodData* md) const; |
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294 |
0 | 295 protected: |
296 DataLayout* data() { return _data; } | |
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297 const DataLayout* data() const { return _data; } |
0 | 298 |
299 enum { | |
300 cell_size = DataLayout::cell_size | |
301 }; | |
302 | |
303 public: | |
304 // How many cells are in this? | |
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305 virtual int cell_count() const { |
0 | 306 ShouldNotReachHere(); |
307 return -1; | |
308 } | |
309 | |
310 // Return the size of this data. | |
311 int size_in_bytes() { | |
312 return DataLayout::compute_size_in_bytes(cell_count()); | |
313 } | |
314 | |
315 protected: | |
316 // Low-level accessors for underlying data | |
317 void set_intptr_at(int index, intptr_t value) { | |
318 assert(0 <= index && index < cell_count(), "oob"); | |
319 data()->set_cell_at(index, value); | |
320 } | |
321 void release_set_intptr_at(int index, intptr_t value) { | |
322 assert(0 <= index && index < cell_count(), "oob"); | |
323 data()->release_set_cell_at(index, value); | |
324 } | |
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325 intptr_t intptr_at(int index) const { |
0 | 326 assert(0 <= index && index < cell_count(), "oob"); |
327 return data()->cell_at(index); | |
328 } | |
329 void set_uint_at(int index, uint value) { | |
330 set_intptr_at(index, (intptr_t) value); | |
331 } | |
332 void release_set_uint_at(int index, uint value) { | |
333 release_set_intptr_at(index, (intptr_t) value); | |
334 } | |
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335 uint uint_at(int index) const { |
0 | 336 return (uint)intptr_at(index); |
337 } | |
338 void set_int_at(int index, int value) { | |
339 set_intptr_at(index, (intptr_t) value); | |
340 } | |
341 void release_set_int_at(int index, int value) { | |
342 release_set_intptr_at(index, (intptr_t) value); | |
343 } | |
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344 int int_at(int index) const { |
0 | 345 return (int)intptr_at(index); |
346 } | |
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347 int int_at_unchecked(int index) const { |
0 | 348 return (int)data()->cell_at(index); |
349 } | |
350 void set_oop_at(int index, oop value) { | |
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351 set_intptr_at(index, cast_from_oop<intptr_t>(value)); |
0 | 352 } |
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353 oop oop_at(int index) const { |
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354 return cast_to_oop(intptr_at(index)); |
0 | 355 } |
356 | |
357 void set_flag_at(int flag_number) { | |
358 data()->set_flag_at(flag_number); | |
359 } | |
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360 bool flag_at(int flag_number) const { |
0 | 361 return data()->flag_at(flag_number); |
362 } | |
363 | |
364 // two convenient imports for use by subclasses: | |
365 static ByteSize cell_offset(int index) { | |
366 return DataLayout::cell_offset(index); | |
367 } | |
368 static int flag_number_to_byte_constant(int flag_number) { | |
369 return DataLayout::flag_number_to_byte_constant(flag_number); | |
370 } | |
371 | |
372 ProfileData(DataLayout* data) { | |
373 _data = data; | |
374 } | |
375 | |
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376 #ifdef CC_INTERP |
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377 // Static low level accessors for DataLayout with ProfileData's semantics. |
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378 |
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379 static int cell_offset_in_bytes(int index) { |
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380 return DataLayout::cell_offset_in_bytes(index); |
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381 } |
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382 |
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383 static void increment_uint_at_no_overflow(DataLayout* layout, int index, |
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384 int inc = DataLayout::counter_increment) { |
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385 uint count = ((uint)layout->cell_at(index)) + inc; |
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386 if (count == 0) return; |
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387 layout->set_cell_at(index, (intptr_t) count); |
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388 } |
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389 |
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390 static int int_at(DataLayout* layout, int index) { |
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391 return (int)layout->cell_at(index); |
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392 } |
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393 |
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394 static int uint_at(DataLayout* layout, int index) { |
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395 return (uint)layout->cell_at(index); |
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396 } |
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397 |
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398 static oop oop_at(DataLayout* layout, int index) { |
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399 return cast_to_oop(layout->cell_at(index)); |
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400 } |
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401 |
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402 static void set_intptr_at(DataLayout* layout, int index, intptr_t value) { |
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403 layout->set_cell_at(index, (intptr_t) value); |
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404 } |
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405 |
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406 static void set_flag_at(DataLayout* layout, int flag_number) { |
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407 layout->set_flag_at(flag_number); |
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408 } |
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409 #endif // CC_INTERP |
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410 |
0 | 411 public: |
412 // Constructor for invalid ProfileData. | |
413 ProfileData(); | |
414 | |
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415 u2 bci() const { |
0 | 416 return data()->bci(); |
417 } | |
418 | |
419 address dp() { | |
420 return (address)_data; | |
421 } | |
422 | |
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423 int trap_state() const { |
0 | 424 return data()->trap_state(); |
425 } | |
426 void set_trap_state(int new_state) { | |
427 data()->set_trap_state(new_state); | |
428 } | |
429 | |
430 // Type checking | |
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431 virtual bool is_BitData() const { return false; } |
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432 virtual bool is_CounterData() const { return false; } |
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433 virtual bool is_JumpData() const { return false; } |
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434 virtual bool is_ReceiverTypeData()const { return false; } |
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435 virtual bool is_VirtualCallData() const { return false; } |
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436 virtual bool is_RetData() const { return false; } |
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437 virtual bool is_BranchData() const { return false; } |
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438 virtual bool is_ArrayData() const { return false; } |
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439 virtual bool is_MultiBranchData() const { return false; } |
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440 virtual bool is_ArgInfoData() const { return false; } |
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441 virtual bool is_CallTypeData() const { return false; } |
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442 virtual bool is_VirtualCallTypeData()const { return false; } |
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443 virtual bool is_ParametersTypeData() const { return false; } |
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444 virtual bool is_SpeculativeTrapData()const { return false; } |
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445 |
0 | 446 |
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447 BitData* as_BitData() const { |
0 | 448 assert(is_BitData(), "wrong type"); |
449 return is_BitData() ? (BitData*) this : NULL; | |
450 } | |
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451 CounterData* as_CounterData() const { |
0 | 452 assert(is_CounterData(), "wrong type"); |
453 return is_CounterData() ? (CounterData*) this : NULL; | |
454 } | |
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455 JumpData* as_JumpData() const { |
0 | 456 assert(is_JumpData(), "wrong type"); |
457 return is_JumpData() ? (JumpData*) this : NULL; | |
458 } | |
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459 ReceiverTypeData* as_ReceiverTypeData() const { |
0 | 460 assert(is_ReceiverTypeData(), "wrong type"); |
461 return is_ReceiverTypeData() ? (ReceiverTypeData*)this : NULL; | |
462 } | |
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463 VirtualCallData* as_VirtualCallData() const { |
0 | 464 assert(is_VirtualCallData(), "wrong type"); |
465 return is_VirtualCallData() ? (VirtualCallData*)this : NULL; | |
466 } | |
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467 RetData* as_RetData() const { |
0 | 468 assert(is_RetData(), "wrong type"); |
469 return is_RetData() ? (RetData*) this : NULL; | |
470 } | |
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471 BranchData* as_BranchData() const { |
0 | 472 assert(is_BranchData(), "wrong type"); |
473 return is_BranchData() ? (BranchData*) this : NULL; | |
474 } | |
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475 ArrayData* as_ArrayData() const { |
0 | 476 assert(is_ArrayData(), "wrong type"); |
477 return is_ArrayData() ? (ArrayData*) this : NULL; | |
478 } | |
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479 MultiBranchData* as_MultiBranchData() const { |
0 | 480 assert(is_MultiBranchData(), "wrong type"); |
481 return is_MultiBranchData() ? (MultiBranchData*)this : NULL; | |
482 } | |
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483 ArgInfoData* as_ArgInfoData() const { |
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484 assert(is_ArgInfoData(), "wrong type"); |
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485 return is_ArgInfoData() ? (ArgInfoData*)this : NULL; |
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486 } |
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487 CallTypeData* as_CallTypeData() const { |
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488 assert(is_CallTypeData(), "wrong type"); |
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489 return is_CallTypeData() ? (CallTypeData*)this : NULL; |
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490 } |
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491 VirtualCallTypeData* as_VirtualCallTypeData() const { |
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492 assert(is_VirtualCallTypeData(), "wrong type"); |
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493 return is_VirtualCallTypeData() ? (VirtualCallTypeData*)this : NULL; |
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494 } |
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495 ParametersTypeData* as_ParametersTypeData() const { |
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496 assert(is_ParametersTypeData(), "wrong type"); |
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497 return is_ParametersTypeData() ? (ParametersTypeData*)this : NULL; |
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498 } |
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499 SpeculativeTrapData* as_SpeculativeTrapData() const { |
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500 assert(is_SpeculativeTrapData(), "wrong type"); |
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501 return is_SpeculativeTrapData() ? (SpeculativeTrapData*)this : NULL; |
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502 } |
0 | 503 |
504 | |
505 // Subclass specific initialization | |
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506 virtual void post_initialize(BytecodeStream* stream, MethodData* mdo) {} |
0 | 507 |
508 // GC support | |
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509 virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure) {} |
0 | 510 |
511 // CI translation: ProfileData can represent both MethodDataOop data | |
512 // as well as CIMethodData data. This function is provided for translating | |
513 // an oop in a ProfileData to the ci equivalent. Generally speaking, | |
514 // most ProfileData don't require any translation, so we provide the null | |
515 // translation here, and the required translators are in the ci subclasses. | |
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516 virtual void translate_from(const ProfileData* data) {} |
0 | 517 |
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518 virtual void print_data_on(outputStream* st, const char* extra = NULL) const { |
0 | 519 ShouldNotReachHere(); |
520 } | |
521 | |
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522 void print_data_on(outputStream* st, const MethodData* md) const; |
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523 |
0 | 524 #ifndef PRODUCT |
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525 void print_shared(outputStream* st, const char* name, const char* extra) const; |
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526 void tab(outputStream* st, bool first = false) const; |
0 | 527 #endif |
528 }; | |
529 | |
530 // BitData | |
531 // | |
532 // A BitData holds a flag or two in its header. | |
533 class BitData : public ProfileData { | |
534 protected: | |
535 enum { | |
536 // null_seen: | |
537 // saw a null operand (cast/aastore/instanceof) | |
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538 null_seen_flag = DataLayout::first_flag + 0 |
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539 #ifdef GRAAL |
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540 // bytecode threw any exception |
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541 , exception_seen_flag = null_seen_flag + 1 |
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542 #endif |
0 | 543 }; |
544 enum { bit_cell_count = 0 }; // no additional data fields needed. | |
545 public: | |
546 BitData(DataLayout* layout) : ProfileData(layout) { | |
547 } | |
548 | |
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549 virtual bool is_BitData() const { return true; } |
0 | 550 |
551 static int static_cell_count() { | |
552 return bit_cell_count; | |
553 } | |
554 | |
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555 virtual int cell_count() const { |
0 | 556 return static_cell_count(); |
557 } | |
558 | |
559 // Accessor | |
560 | |
561 // The null_seen flag bit is specially known to the interpreter. | |
562 // Consulting it allows the compiler to avoid setting up null_check traps. | |
563 bool null_seen() { return flag_at(null_seen_flag); } | |
564 void set_null_seen() { set_flag_at(null_seen_flag); } | |
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565 #ifdef GRAAL |
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566 // true if an exception was thrown at the specific BCI |
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567 bool exception_seen() { return flag_at(exception_seen_flag); } |
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568 void set_exception_seen() { set_flag_at(exception_seen_flag); } |
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569 #endif |
0 | 570 |
571 // Code generation support | |
572 static int null_seen_byte_constant() { | |
573 return flag_number_to_byte_constant(null_seen_flag); | |
574 } | |
575 | |
576 static ByteSize bit_data_size() { | |
577 return cell_offset(bit_cell_count); | |
578 } | |
579 | |
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580 #ifdef CC_INTERP |
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581 static int bit_data_size_in_bytes() { |
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582 return cell_offset_in_bytes(bit_cell_count); |
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583 } |
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584 |
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585 static void set_null_seen(DataLayout* layout) { |
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586 set_flag_at(layout, null_seen_flag); |
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587 } |
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588 |
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589 static DataLayout* advance(DataLayout* layout) { |
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590 return (DataLayout*) (((address)layout) + (ssize_t)BitData::bit_data_size_in_bytes()); |
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591 } |
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592 #endif // CC_INTERP |
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593 |
0 | 594 #ifndef PRODUCT |
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595 void print_data_on(outputStream* st, const char* extra = NULL) const; |
0 | 596 #endif |
597 }; | |
598 | |
599 // CounterData | |
600 // | |
601 // A CounterData corresponds to a simple counter. | |
602 class CounterData : public BitData { | |
603 protected: | |
604 enum { | |
605 count_off, | |
606 counter_cell_count | |
607 }; | |
608 public: | |
609 CounterData(DataLayout* layout) : BitData(layout) {} | |
610 | |
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611 virtual bool is_CounterData() const { return true; } |
0 | 612 |
613 static int static_cell_count() { | |
614 return counter_cell_count; | |
615 } | |
616 | |
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617 virtual int cell_count() const { |
0 | 618 return static_cell_count(); |
619 } | |
620 | |
621 // Direct accessor | |
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622 uint count() const { |
0 | 623 return uint_at(count_off); |
624 } | |
625 | |
626 // Code generation support | |
627 static ByteSize count_offset() { | |
628 return cell_offset(count_off); | |
629 } | |
630 static ByteSize counter_data_size() { | |
631 return cell_offset(counter_cell_count); | |
632 } | |
633 | |
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634 void set_count(uint count) { |
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635 set_uint_at(count_off, count); |
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636 } |
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637 |
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638 #ifdef CC_INTERP |
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639 static int counter_data_size_in_bytes() { |
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640 return cell_offset_in_bytes(counter_cell_count); |
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641 } |
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642 |
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643 static void increment_count_no_overflow(DataLayout* layout) { |
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644 increment_uint_at_no_overflow(layout, count_off); |
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645 } |
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646 |
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647 // Support counter decrementation at checkcast / subtype check failed. |
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648 static void decrement_count(DataLayout* layout) { |
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649 increment_uint_at_no_overflow(layout, count_off, -1); |
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650 } |
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651 |
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652 static DataLayout* advance(DataLayout* layout) { |
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653 return (DataLayout*) (((address)layout) + (ssize_t)CounterData::counter_data_size_in_bytes()); |
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654 } |
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655 #endif // CC_INTERP |
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656 |
0 | 657 #ifndef PRODUCT |
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658 void print_data_on(outputStream* st, const char* extra = NULL) const; |
0 | 659 #endif |
660 }; | |
661 | |
662 // JumpData | |
663 // | |
664 // A JumpData is used to access profiling information for a direct | |
665 // branch. It is a counter, used for counting the number of branches, | |
666 // plus a data displacement, used for realigning the data pointer to | |
667 // the corresponding target bci. | |
668 class JumpData : public ProfileData { | |
669 protected: | |
670 enum { | |
671 taken_off_set, | |
672 displacement_off_set, | |
673 jump_cell_count | |
674 }; | |
675 | |
676 void set_displacement(int displacement) { | |
677 set_int_at(displacement_off_set, displacement); | |
678 } | |
679 | |
680 public: | |
681 JumpData(DataLayout* layout) : ProfileData(layout) { | |
682 assert(layout->tag() == DataLayout::jump_data_tag || | |
683 layout->tag() == DataLayout::branch_data_tag, "wrong type"); | |
684 } | |
685 | |
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686 virtual bool is_JumpData() const { return true; } |
0 | 687 |
688 static int static_cell_count() { | |
689 return jump_cell_count; | |
690 } | |
691 | |
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692 virtual int cell_count() const { |
0 | 693 return static_cell_count(); |
694 } | |
695 | |
696 // Direct accessor | |
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697 uint taken() const { |
0 | 698 return uint_at(taken_off_set); |
699 } | |
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700 |
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701 void set_taken(uint cnt) { |
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702 set_uint_at(taken_off_set, cnt); |
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703 } |
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704 |
0 | 705 // Saturating counter |
706 uint inc_taken() { | |
707 uint cnt = taken() + 1; | |
708 // Did we wrap? Will compiler screw us?? | |
709 if (cnt == 0) cnt--; | |
710 set_uint_at(taken_off_set, cnt); | |
711 return cnt; | |
712 } | |
713 | |
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714 int displacement() const { |
0 | 715 return int_at(displacement_off_set); |
716 } | |
717 | |
718 // Code generation support | |
719 static ByteSize taken_offset() { | |
720 return cell_offset(taken_off_set); | |
721 } | |
722 | |
723 static ByteSize displacement_offset() { | |
724 return cell_offset(displacement_off_set); | |
725 } | |
726 | |
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727 #ifdef CC_INTERP |
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728 static void increment_taken_count_no_overflow(DataLayout* layout) { |
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729 increment_uint_at_no_overflow(layout, taken_off_set); |
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730 } |
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731 |
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732 static DataLayout* advance_taken(DataLayout* layout) { |
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733 return (DataLayout*) (((address)layout) + (ssize_t)int_at(layout, displacement_off_set)); |
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734 } |
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735 |
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736 static uint taken_count(DataLayout* layout) { |
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737 return (uint) uint_at(layout, taken_off_set); |
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738 } |
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739 #endif // CC_INTERP |
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740 |
0 | 741 // Specific initialization. |
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742 void post_initialize(BytecodeStream* stream, MethodData* mdo); |
0 | 743 |
744 #ifndef PRODUCT | |
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745 void print_data_on(outputStream* st, const char* extra = NULL) const; |
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746 #endif |
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747 }; |
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748 |
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749 // Entries in a ProfileData object to record types: it can either be |
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750 // none (no profile), unknown (conflicting profile data) or a klass if |
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751 // a single one is seen. Whether a null reference was seen is also |
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752 // recorded. No counter is associated with the type and a single type |
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753 // is tracked (unlike VirtualCallData). |
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754 class TypeEntries { |
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755 |
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756 public: |
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757 |
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758 // A single cell is used to record information for a type: |
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759 // - the cell is initialized to 0 |
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760 // - when a type is discovered it is stored in the cell |
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761 // - bit zero of the cell is used to record whether a null reference |
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762 // was encountered or not |
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763 // - bit 1 is set to record a conflict in the type information |
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764 |
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765 enum { |
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766 null_seen = 1, |
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767 type_mask = ~null_seen, |
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768 type_unknown = 2, |
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769 status_bits = null_seen | type_unknown, |
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770 type_klass_mask = ~status_bits |
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771 }; |
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772 |
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773 // what to initialize a cell to |
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774 static intptr_t type_none() { |
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775 return 0; |
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776 } |
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777 |
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778 // null seen = bit 0 set? |
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779 static bool was_null_seen(intptr_t v) { |
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780 return (v & null_seen) != 0; |
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781 } |
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782 |
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783 // conflicting type information = bit 1 set? |
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784 static bool is_type_unknown(intptr_t v) { |
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785 return (v & type_unknown) != 0; |
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786 } |
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787 |
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788 // not type information yet = all bits cleared, ignoring bit 0? |
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789 static bool is_type_none(intptr_t v) { |
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790 return (v & type_mask) == 0; |
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791 } |
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792 |
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793 // recorded type: cell without bit 0 and 1 |
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794 static intptr_t klass_part(intptr_t v) { |
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795 intptr_t r = v & type_klass_mask; |
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796 return r; |
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797 } |
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798 |
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799 // type recorded |
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800 static Klass* valid_klass(intptr_t k) { |
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801 if (!is_type_none(k) && |
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802 !is_type_unknown(k)) { |
13080 | 803 Klass* res = (Klass*)klass_part(k); |
804 assert(res != NULL, "invalid"); | |
805 return res; | |
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806 } else { |
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807 return NULL; |
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808 } |
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809 } |
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810 |
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811 static intptr_t with_status(intptr_t k, intptr_t in) { |
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812 return k | (in & status_bits); |
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|
813 } |
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|
814 |
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815 static intptr_t with_status(Klass* k, intptr_t in) { |
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816 return with_status((intptr_t)k, in); |
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|
817 } |
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|
818 |
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|
819 #ifndef PRODUCT |
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820 static void print_klass(outputStream* st, intptr_t k); |
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821 #endif |
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|
822 |
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|
823 // GC support |
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824 static bool is_loader_alive(BoolObjectClosure* is_alive_cl, intptr_t p); |
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|
825 |
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|
826 protected: |
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827 // ProfileData object these entries are part of |
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828 ProfileData* _pd; |
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829 // offset within the ProfileData object where the entries start |
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|
830 const int _base_off; |
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|
831 |
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|
832 TypeEntries(int base_off) |
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833 : _base_off(base_off), _pd(NULL) {} |
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|
834 |
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835 void set_intptr_at(int index, intptr_t value) { |
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836 _pd->set_intptr_at(index, value); |
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|
837 } |
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|
838 |
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|
839 intptr_t intptr_at(int index) const { |
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840 return _pd->intptr_at(index); |
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|
841 } |
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|
842 |
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|
843 public: |
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|
844 void set_profile_data(ProfileData* pd) { |
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|
845 _pd = pd; |
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|
846 } |
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|
847 }; |
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|
848 |
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849 // Type entries used for arguments passed at a call and parameters on |
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850 // method entry. 2 cells per entry: one for the type encoded as in |
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851 // TypeEntries and one initialized with the stack slot where the |
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852 // profiled object is to be found so that the interpreter can locate |
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|
853 // it quickly. |
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854 class TypeStackSlotEntries : public TypeEntries { |
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|
855 |
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|
856 private: |
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|
857 enum { |
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|
858 stack_slot_entry, |
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|
859 type_entry, |
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|
860 per_arg_cell_count |
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|
861 }; |
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|
862 |
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|
863 // offset of cell for stack slot for entry i within ProfileData object |
12882
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864 int stack_slot_offset(int i) const { |
12875
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865 return _base_off + stack_slot_local_offset(i); |
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|
866 } |
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|
867 |
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|
868 protected: |
12882
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|
869 const int _number_of_entries; |
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|
870 |
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|
871 // offset of cell for type for entry i within ProfileData object |
12882
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872 int type_offset(int i) const { |
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|
873 return _base_off + type_local_offset(i); |
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|
874 } |
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|
875 |
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|
876 public: |
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|
877 |
12882
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|
878 TypeStackSlotEntries(int base_off, int nb_entries) |
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879 : TypeEntries(base_off), _number_of_entries(nb_entries) {} |
12875
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|
880 |
12962
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|
881 static int compute_cell_count(Symbol* signature, bool include_receiver, int max); |
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|
882 |
12962
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|
883 void post_initialize(Symbol* signature, bool has_receiver, bool include_receiver); |
12875
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|
884 |
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|
885 // offset of cell for stack slot for entry i within this block of cells for a TypeStackSlotEntries |
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|
886 static int stack_slot_local_offset(int i) { |
12882
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887 return i * per_arg_cell_count + stack_slot_entry; |
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|
888 } |
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|
889 |
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|
890 // offset of cell for type for entry i within this block of cells for a TypeStackSlotEntries |
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|
891 static int type_local_offset(int i) { |
12882
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892 return i * per_arg_cell_count + type_entry; |
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|
893 } |
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|
894 |
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|
895 // stack slot for entry i |
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|
896 uint stack_slot(int i) const { |
12882
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|
897 assert(i >= 0 && i < _number_of_entries, "oob"); |
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898 return _pd->uint_at(stack_slot_offset(i)); |
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|
899 } |
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|
900 |
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|
901 // set stack slot for entry i |
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|
902 void set_stack_slot(int i, uint num) { |
12882
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903 assert(i >= 0 && i < _number_of_entries, "oob"); |
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|
904 _pd->set_uint_at(stack_slot_offset(i), num); |
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|
905 } |
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|
906 |
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|
907 // type for entry i |
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|
908 intptr_t type(int i) const { |
12882
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|
909 assert(i >= 0 && i < _number_of_entries, "oob"); |
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910 return _pd->intptr_at(type_offset(i)); |
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|
911 } |
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|
912 |
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|
913 // set type for entry i |
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|
914 void set_type(int i, intptr_t k) { |
12882
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|
915 assert(i >= 0 && i < _number_of_entries, "oob"); |
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|
916 _pd->set_intptr_at(type_offset(i), k); |
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|
917 } |
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|
918 |
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|
919 static ByteSize per_arg_size() { |
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|
920 return in_ByteSize(per_arg_cell_count * DataLayout::cell_size); |
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|
921 } |
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|
922 |
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|
923 static int per_arg_count() { |
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|
924 return per_arg_cell_count ; |
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|
925 } |
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|
926 |
12882
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|
927 // GC support |
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|
928 void clean_weak_klass_links(BoolObjectClosure* is_alive_closure); |
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|
929 |
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|
930 #ifndef PRODUCT |
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|
931 void print_data_on(outputStream* st) const; |
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|
932 #endif |
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|
933 }; |
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|
934 |
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|
935 // Type entry used for return from a call. A single cell to record the |
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|
936 // type. |
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|
937 class ReturnTypeEntry : public TypeEntries { |
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|
938 |
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|
939 private: |
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|
940 enum { |
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|
941 cell_count = 1 |
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|
942 }; |
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|
943 |
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|
944 public: |
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|
945 ReturnTypeEntry(int base_off) |
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|
946 : TypeEntries(base_off) {} |
12875
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|
947 |
12882
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|
948 void post_initialize() { |
ce0cc25bc5e2
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|
949 set_type(type_none()); |
ce0cc25bc5e2
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|
950 } |
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951 |
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952 intptr_t type() const { |
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953 return _pd->intptr_at(_base_off); |
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954 } |
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955 |
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956 void set_type(intptr_t k) { |
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957 _pd->set_intptr_at(_base_off, k); |
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958 } |
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959 |
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960 static int static_cell_count() { |
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961 return cell_count; |
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962 } |
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963 |
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964 static ByteSize size() { |
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965 return in_ByteSize(cell_count * DataLayout::cell_size); |
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966 } |
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967 |
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968 ByteSize type_offset() { |
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969 return DataLayout::cell_offset(_base_off); |
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970 } |
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971 |
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972 // GC support |
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973 void clean_weak_klass_links(BoolObjectClosure* is_alive_closure); |
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974 |
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975 #ifndef PRODUCT |
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976 void print_data_on(outputStream* st) const; |
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977 #endif |
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978 }; |
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979 |
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980 // Entries to collect type information at a call: contains arguments |
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981 // (TypeStackSlotEntries), a return type (ReturnTypeEntry) and a |
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982 // number of cells. Because the number of cells for the return type is |
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983 // smaller than the number of cells for the type of an arguments, the |
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984 // number of cells is used to tell how many arguments are profiled and |
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985 // whether a return value is profiled. See has_arguments() and |
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986 // has_return(). |
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987 class TypeEntriesAtCall { |
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988 private: |
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989 static int stack_slot_local_offset(int i) { |
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990 return header_cell_count() + TypeStackSlotEntries::stack_slot_local_offset(i); |
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991 } |
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992 |
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993 static int argument_type_local_offset(int i) { |
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994 return header_cell_count() + TypeStackSlotEntries::type_local_offset(i);; |
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995 } |
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996 |
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997 public: |
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998 |
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999 static int header_cell_count() { |
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1000 return 1; |
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1001 } |
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1002 |
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1003 static int cell_count_local_offset() { |
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1004 return 0; |
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1005 } |
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1006 |
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1007 static int compute_cell_count(BytecodeStream* stream); |
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1008 |
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1009 static void initialize(DataLayout* dl, int base, int cell_count) { |
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1010 int off = base + cell_count_local_offset(); |
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1011 dl->set_cell_at(off, cell_count - base - header_cell_count()); |
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1012 } |
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1013 |
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1014 static bool arguments_profiling_enabled(); |
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1015 static bool return_profiling_enabled(); |
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1016 |
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1017 // Code generation support |
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1018 static ByteSize cell_count_offset() { |
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1019 return in_ByteSize(cell_count_local_offset() * DataLayout::cell_size); |
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1020 } |
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1021 |
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1022 static ByteSize args_data_offset() { |
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1023 return in_ByteSize(header_cell_count() * DataLayout::cell_size); |
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1024 } |
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1025 |
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1026 static ByteSize stack_slot_offset(int i) { |
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1027 return in_ByteSize(stack_slot_local_offset(i) * DataLayout::cell_size); |
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1028 } |
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1029 |
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1030 static ByteSize argument_type_offset(int i) { |
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1031 return in_ByteSize(argument_type_local_offset(i) * DataLayout::cell_size); |
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1032 } |
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1033 }; |
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1034 |
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1035 // CallTypeData |
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1036 // |
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1037 // A CallTypeData is used to access profiling information about a non |
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1038 // virtual call for which we collect type information about arguments |
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1039 // and return value. |
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1040 class CallTypeData : public CounterData { |
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1041 private: |
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1042 // entries for arguments if any |
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1043 TypeStackSlotEntries _args; |
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1044 // entry for return type if any |
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1045 ReturnTypeEntry _ret; |
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1046 |
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1047 int cell_count_global_offset() const { |
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1048 return CounterData::static_cell_count() + TypeEntriesAtCall::cell_count_local_offset(); |
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1049 } |
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1050 |
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1051 // number of cells not counting the header |
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1052 int cell_count_no_header() const { |
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1053 return uint_at(cell_count_global_offset()); |
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1054 } |
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1055 |
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1056 void check_number_of_arguments(int total) { |
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1057 assert(number_of_arguments() == total, "should be set in DataLayout::initialize"); |
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1058 } |
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1059 |
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1060 public: |
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1061 CallTypeData(DataLayout* layout) : |
12882
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1062 CounterData(layout), |
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1063 _args(CounterData::static_cell_count()+TypeEntriesAtCall::header_cell_count(), number_of_arguments()), |
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1064 _ret(cell_count() - ReturnTypeEntry::static_cell_count()) |
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1065 { |
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1066 assert(layout->tag() == DataLayout::call_type_data_tag, "wrong type"); |
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1067 // Some compilers (VC++) don't want this passed in member initialization list |
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1068 _args.set_profile_data(this); |
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1069 _ret.set_profile_data(this); |
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1070 } |
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1071 |
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1072 const TypeStackSlotEntries* args() const { |
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1073 assert(has_arguments(), "no profiling of arguments"); |
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1074 return &_args; |
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1075 } |
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|
1076 |
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1077 const ReturnTypeEntry* ret() const { |
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1078 assert(has_return(), "no profiling of return value"); |
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1079 return &_ret; |
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1080 } |
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1081 |
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1082 virtual bool is_CallTypeData() const { return true; } |
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1083 |
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1084 static int static_cell_count() { |
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1085 return -1; |
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1086 } |
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1087 |
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1088 static int compute_cell_count(BytecodeStream* stream) { |
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1089 return CounterData::static_cell_count() + TypeEntriesAtCall::compute_cell_count(stream); |
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1090 } |
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1091 |
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1092 static void initialize(DataLayout* dl, int cell_count) { |
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1093 TypeEntriesAtCall::initialize(dl, CounterData::static_cell_count(), cell_count); |
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1094 } |
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1095 |
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1096 virtual void post_initialize(BytecodeStream* stream, MethodData* mdo); |
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1097 |
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1098 virtual int cell_count() const { |
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1099 return CounterData::static_cell_count() + |
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1100 TypeEntriesAtCall::header_cell_count() + |
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1101 int_at_unchecked(cell_count_global_offset()); |
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1102 } |
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1103 |
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1104 int number_of_arguments() const { |
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1105 return cell_count_no_header() / TypeStackSlotEntries::per_arg_count(); |
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1106 } |
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1107 |
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1108 void set_argument_type(int i, Klass* k) { |
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1109 assert(has_arguments(), "no arguments!"); |
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1110 intptr_t current = _args.type(i); |
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1111 _args.set_type(i, TypeEntries::with_status(k, current)); |
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1112 } |
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1113 |
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1114 void set_return_type(Klass* k) { |
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1115 assert(has_return(), "no return!"); |
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1116 intptr_t current = _ret.type(); |
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1117 _ret.set_type(TypeEntries::with_status(k, current)); |
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1118 } |
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1119 |
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1120 // An entry for a return value takes less space than an entry for an |
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1121 // argument so if the number of cells exceeds the number of cells |
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1122 // needed for an argument, this object contains type information for |
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1123 // at least one argument. |
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1124 bool has_arguments() const { |
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1125 bool res = cell_count_no_header() >= TypeStackSlotEntries::per_arg_count(); |
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1126 assert (!res || TypeEntriesAtCall::arguments_profiling_enabled(), "no profiling of arguments"); |
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1127 return res; |
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1128 } |
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1129 |
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1130 // An entry for a return value takes less space than an entry for an |
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1131 // argument, so if the remainder of the number of cells divided by |
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1132 // the number of cells for an argument is not null, a return value |
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1133 // is profiled in this object. |
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1134 bool has_return() const { |
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1135 bool res = (cell_count_no_header() % TypeStackSlotEntries::per_arg_count()) != 0; |
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1136 assert (!res || TypeEntriesAtCall::return_profiling_enabled(), "no profiling of return values"); |
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1137 return res; |
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1138 } |
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1139 |
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1140 // Code generation support |
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1141 static ByteSize args_data_offset() { |
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1142 return cell_offset(CounterData::static_cell_count()) + TypeEntriesAtCall::args_data_offset(); |
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1143 } |
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1144 |
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1145 // GC support |
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1146 virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure) { |
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1147 if (has_arguments()) { |
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1148 _args.clean_weak_klass_links(is_alive_closure); |
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1149 } |
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1150 if (has_return()) { |
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1151 _ret.clean_weak_klass_links(is_alive_closure); |
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1152 } |
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1153 } |
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1154 |
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1155 #ifndef PRODUCT |
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1156 virtual void print_data_on(outputStream* st, const char* extra = NULL) const; |
0 | 1157 #endif |
1158 }; | |
1159 | |
1160 // ReceiverTypeData | |
1161 // | |
1162 // A ReceiverTypeData is used to access profiling information about a | |
1163 // dynamic type check. It consists of a counter which counts the total times | |
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1164 // that the check is reached, and a series of (Klass*, count) pairs |
0 | 1165 // which are used to store a type profile for the receiver of the check. |
1166 class ReceiverTypeData : public CounterData { | |
1167 protected: | |
1168 enum { | |
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1169 #ifdef GRAAL |
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1170 // Description of the different counters |
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1171 // ReceiverTypeData for instanceof/checkcast/aastore: |
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1172 // C1/C2: count is incremented on type overflow and decremented for failed type checks |
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1173 // Graal: count decremented for failed type checks and nonprofiled_count is incremented on type overflow |
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1174 // TODO (chaeubl): in fact, Graal should also increment the count for failed type checks to mimic the C1/C2 behavior |
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1175 // VirtualCallData for invokevirtual/invokeinterface: |
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1176 // C1/C2: count is incremented on type overflow |
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1177 // Graal: count is incremented on type overflow, nonprofiled_count is incremented on method overflow |
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1178 |
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1179 // Graal is interested in knowing the percentage of type checks involving a type not explicitly in the profile |
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1180 nonprofiled_count_off_set = counter_cell_count, |
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1181 receiver0_offset, |
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1182 #else |
0 | 1183 receiver0_offset = counter_cell_count, |
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1184 #endif |
0 | 1185 count0_offset, |
1186 receiver_type_row_cell_count = (count0_offset + 1) - receiver0_offset | |
1187 }; | |
1188 | |
1189 public: | |
1190 ReceiverTypeData(DataLayout* layout) : CounterData(layout) { | |
1191 assert(layout->tag() == DataLayout::receiver_type_data_tag || | |
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1192 layout->tag() == DataLayout::virtual_call_data_tag || |
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1193 layout->tag() == DataLayout::virtual_call_type_data_tag, "wrong type"); |
0 | 1194 } |
1195 | |
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1196 virtual bool is_ReceiverTypeData() const { return true; } |
0 | 1197 |
1198 static int static_cell_count() { | |
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1199 return counter_cell_count + (uint) TypeProfileWidth * receiver_type_row_cell_count GRAAL_ONLY(+ 1); |
0 | 1200 } |
1201 | |
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1202 virtual int cell_count() const { |
0 | 1203 return static_cell_count(); |
1204 } | |
1205 | |
1206 // Direct accessors | |
1207 static uint row_limit() { | |
1208 return TypeProfileWidth; | |
1209 } | |
1210 static int receiver_cell_index(uint row) { | |
1211 return receiver0_offset + row * receiver_type_row_cell_count; | |
1212 } | |
1213 static int receiver_count_cell_index(uint row) { | |
1214 return count0_offset + row * receiver_type_row_cell_count; | |
1215 } | |
1216 | |
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1217 Klass* receiver(uint row) const { |
0 | 1218 assert(row < row_limit(), "oob"); |
1219 | |
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1220 Klass* recv = (Klass*)intptr_at(receiver_cell_index(row)); |
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1221 assert(recv == NULL || recv->is_klass(), "wrong type"); |
0 | 1222 return recv; |
1223 } | |
1224 | |
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1225 void set_receiver(uint row, Klass* k) { |
941 | 1226 assert((uint)row < row_limit(), "oob"); |
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1227 set_intptr_at(receiver_cell_index(row), (uintptr_t)k); |
941 | 1228 } |
1229 | |
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1230 uint receiver_count(uint row) const { |
0 | 1231 assert(row < row_limit(), "oob"); |
1232 return uint_at(receiver_count_cell_index(row)); | |
1233 } | |
1234 | |
941 | 1235 void set_receiver_count(uint row, uint count) { |
1236 assert(row < row_limit(), "oob"); | |
1237 set_uint_at(receiver_count_cell_index(row), count); | |
1238 } | |
1239 | |
1240 void clear_row(uint row) { | |
1241 assert(row < row_limit(), "oob"); | |
1251
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1242 // Clear total count - indicator of polymorphic call site. |
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1243 // The site may look like as monomorphic after that but |
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1244 // it allow to have more accurate profiling information because |
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1245 // there was execution phase change since klasses were unloaded. |
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1246 // If the site is still polymorphic then MDO will be updated |
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1247 // to reflect it. But it could be the case that the site becomes |
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1248 // only bimorphic. Then keeping total count not 0 will be wrong. |
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1249 // Even if we use monomorphic (when it is not) for compilation |
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1250 // we will only have trap, deoptimization and recompile again |
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1251 // with updated MDO after executing method in Interpreter. |
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1252 // An additional receiver will be recorded in the cleaned row |
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1253 // during next call execution. |
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1254 // |
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1255 // Note: our profiling logic works with empty rows in any slot. |
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1256 // We do sorting a profiling info (ciCallProfile) for compilation. |
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1257 // |
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1258 set_count(0); |
941 | 1259 set_receiver(row, NULL); |
1260 set_receiver_count(row, 0); | |
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1261 #ifdef GRAAL |
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1262 if (!this->is_VirtualCallData()) { |
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1263 // if this is a ReceiverTypeData for Graal, the nonprofiled_count |
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1264 // must also be reset (see "Description of the different counters" above) |
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1265 set_nonprofiled_count(0); |
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1266 } |
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1267 #endif |
941 | 1268 } |
1269 | |
0 | 1270 // Code generation support |
1271 static ByteSize receiver_offset(uint row) { | |
1272 return cell_offset(receiver_cell_index(row)); | |
1273 } | |
1274 static ByteSize receiver_count_offset(uint row) { | |
1275 return cell_offset(receiver_count_cell_index(row)); | |
1276 } | |
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1277 #ifdef GRAAL |
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1278 static ByteSize nonprofiled_receiver_count_offset() { |
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1279 return cell_offset(nonprofiled_count_off_set); |
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1280 } |
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1281 uint nonprofiled_count() const { |
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1282 return uint_at(nonprofiled_count_off_set); |
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1283 } |
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1284 void set_nonprofiled_count(uint count) { |
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1285 set_uint_at(nonprofiled_count_off_set, count); |
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1286 } |
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1287 #endif |
0 | 1288 static ByteSize receiver_type_data_size() { |
1289 return cell_offset(static_cell_count()); | |
1290 } | |
1291 | |
1292 // GC support | |
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1293 virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure); |
0 | 1294 |
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1295 #ifdef CC_INTERP |
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1296 static int receiver_type_data_size_in_bytes() { |
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1297 return cell_offset_in_bytes(static_cell_count()); |
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1298 } |
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1299 |
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1300 static Klass *receiver_unchecked(DataLayout* layout, uint row) { |
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1301 Klass* recv = (Klass*)layout->cell_at(receiver_cell_index(row)); |
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1302 return recv; |
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1303 } |
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1304 |
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1305 static void increment_receiver_count_no_overflow(DataLayout* layout, Klass *rcvr) { |
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1306 const int num_rows = row_limit(); |
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1307 // Receiver already exists? |
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1308 for (int row = 0; row < num_rows; row++) { |
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1309 if (receiver_unchecked(layout, row) == rcvr) { |
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1310 increment_uint_at_no_overflow(layout, receiver_count_cell_index(row)); |
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1311 return; |
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1312 } |
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1313 } |
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1314 // New receiver, find a free slot. |
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1315 for (int row = 0; row < num_rows; row++) { |
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1316 if (receiver_unchecked(layout, row) == NULL) { |
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1317 set_intptr_at(layout, receiver_cell_index(row), (intptr_t)rcvr); |
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1318 increment_uint_at_no_overflow(layout, receiver_count_cell_index(row)); |
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1319 return; |
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1320 } |
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1321 } |
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1322 // Receiver did not match any saved receiver and there is no empty row for it. |
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1323 // Increment total counter to indicate polymorphic case. |
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1324 increment_count_no_overflow(layout); |
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1325 } |
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1326 |
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1327 static DataLayout* advance(DataLayout* layout) { |
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1328 return (DataLayout*) (((address)layout) + (ssize_t)ReceiverTypeData::receiver_type_data_size_in_bytes()); |
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1329 } |
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1330 #endif // CC_INTERP |
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1331 |
0 | 1332 #ifndef PRODUCT |
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1333 void print_receiver_data_on(outputStream* st) const; |
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1334 void print_data_on(outputStream* st, const char* extra = NULL) const; |
0 | 1335 #endif |
1336 }; | |
1337 | |
1338 // VirtualCallData | |
1339 // | |
1340 // A VirtualCallData is used to access profiling information about a | |
1341 // virtual call. For now, it has nothing more than a ReceiverTypeData. | |
1342 class VirtualCallData : public ReceiverTypeData { | |
1343 public: | |
1344 VirtualCallData(DataLayout* layout) : ReceiverTypeData(layout) { | |
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1345 assert(layout->tag() == DataLayout::virtual_call_data_tag || |
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1346 layout->tag() == DataLayout::virtual_call_type_data_tag, "wrong type"); |
0 | 1347 } |
1348 | |
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1349 virtual bool is_VirtualCallData() const { return true; } |
0 | 1350 |
1351 static int static_cell_count() { | |
1352 // At this point we could add more profile state, e.g., for arguments. | |
1353 // But for now it's the same size as the base record type. | |
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1354 return ReceiverTypeData::static_cell_count() GRAAL_ONLY(+ (uint) MethodProfileWidth * receiver_type_row_cell_count); |
0 | 1355 } |
1356 | |
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1357 virtual int cell_count() const { |
0 | 1358 return static_cell_count(); |
1359 } | |
1360 | |
1361 // Direct accessors | |
1362 static ByteSize virtual_call_data_size() { | |
1363 return cell_offset(static_cell_count()); | |
1364 } | |
1365 | |
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1366 #ifdef CC_INTERP |
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1367 static int virtual_call_data_size_in_bytes() { |
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1368 return cell_offset_in_bytes(static_cell_count()); |
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1369 } |
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1370 |
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1371 static DataLayout* advance(DataLayout* layout) { |
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1372 return (DataLayout*) (((address)layout) + (ssize_t)VirtualCallData::virtual_call_data_size_in_bytes()); |
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1373 } |
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1374 #endif // CC_INTERP |
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1375 |
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1376 #ifdef GRAAL |
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1377 static ByteSize method_offset(uint row) { |
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1378 return cell_offset(method_cell_index(row)); |
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1379 } |
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1380 static ByteSize method_count_offset(uint row) { |
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1381 return cell_offset(method_count_cell_index(row)); |
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1382 } |
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1383 static int method_cell_index(uint row) { |
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1384 return receiver0_offset + (row + TypeProfileWidth) * receiver_type_row_cell_count; |
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1385 } |
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1386 static int method_count_cell_index(uint row) { |
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1387 return count0_offset + (row + TypeProfileWidth) * receiver_type_row_cell_count; |
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1388 } |
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1389 static uint method_row_limit() { |
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1390 return MethodProfileWidth; |
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1391 } |
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1392 |
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1393 Method* method(uint row) const { |
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1394 assert(row < method_row_limit(), "oob"); |
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1395 |
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1396 Method* method = (Method*)intptr_at(method_cell_index(row)); |
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1397 assert(method == NULL || method->is_method(), "must be"); |
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1398 return method; |
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1399 } |
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1400 |
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1401 uint method_count(uint row) const { |
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1402 assert(row < method_row_limit(), "oob"); |
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1403 return uint_at(method_count_cell_index(row)); |
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13086
diff
changeset
|
1404 } |
d84fa69a9874
added support for printing method profiles for virtual calls
Doug Simon <doug.simon@oracle.com>
parents:
13086
diff
changeset
|
1405 |
9762
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1406 void set_method(uint row, Method* m) { |
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1407 assert((uint)row < method_row_limit(), "oob"); |
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1408 set_intptr_at(method_cell_index(row), (uintptr_t)m); |
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1409 } |
9760
c76b43ed5089
Added infrastructure for recording invoked methods in the profiling information.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9088
diff
changeset
|
1410 |
9762
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1411 void set_method_count(uint row, uint count) { |
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1412 assert(row < method_row_limit(), "oob"); |
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1413 set_uint_at(method_count_cell_index(row), count); |
0 | 1414 } |
1415 | |
9762
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1416 void clear_method_row(uint row) { |
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1417 assert(row < method_row_limit(), "oob"); |
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1418 // Clear total count - indicator of polymorphic call site (see comment for clear_row() in ReceiverTypeData). |
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1419 set_nonprofiled_count(0); |
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1420 set_method(row, NULL); |
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1421 set_method_count(row, 0); |
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1422 } |
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1423 |
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1424 // GC support |
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1425 virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure); |
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1426 #endif |
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1427 |
0 | 1428 #ifndef PRODUCT |
13108
d84fa69a9874
added support for printing method profiles for virtual calls
Doug Simon <doug.simon@oracle.com>
parents:
13086
diff
changeset
|
1429 #ifdef GRAAL |
d84fa69a9874
added support for printing method profiles for virtual calls
Doug Simon <doug.simon@oracle.com>
parents:
13086
diff
changeset
|
1430 void print_method_data_on(outputStream* st) const; |
d84fa69a9874
added support for printing method profiles for virtual calls
Doug Simon <doug.simon@oracle.com>
parents:
13086
diff
changeset
|
1431 #endif |
14500
fdad2932c73f
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
14435
diff
changeset
|
1432 void print_data_on(outputStream* st, const char* extra = NULL) const; |
12875
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1433 #endif |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1434 }; |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1435 |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1436 // VirtualCallTypeData |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1437 // |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1438 // A VirtualCallTypeData is used to access profiling information about |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1439 // a virtual call for which we collect type information about |
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1440 // arguments and return value. |
12875
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1441 class VirtualCallTypeData : public VirtualCallData { |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1442 private: |
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1443 // entries for arguments if any |
12875
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1444 TypeStackSlotEntries _args; |
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1445 // entry for return type if any |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1446 ReturnTypeEntry _ret; |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1447 |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1448 int cell_count_global_offset() const { |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1449 return VirtualCallData::static_cell_count() + TypeEntriesAtCall::cell_count_local_offset(); |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
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|
1450 } |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1451 |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1452 // number of cells not counting the header |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1453 int cell_count_no_header() const { |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1454 return uint_at(cell_count_global_offset()); |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1455 } |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1456 |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1457 void check_number_of_arguments(int total) { |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1458 assert(number_of_arguments() == total, "should be set in DataLayout::initialize"); |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1459 } |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1460 |
12875
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1461 public: |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1462 VirtualCallTypeData(DataLayout* layout) : |
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1463 VirtualCallData(layout), |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1464 _args(VirtualCallData::static_cell_count()+TypeEntriesAtCall::header_cell_count(), number_of_arguments()), |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1465 _ret(cell_count() - ReturnTypeEntry::static_cell_count()) |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1466 { |
12875
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1467 assert(layout->tag() == DataLayout::virtual_call_type_data_tag, "wrong type"); |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1468 // Some compilers (VC++) don't want this passed in member initialization list |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1469 _args.set_profile_data(this); |
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1470 _ret.set_profile_data(this); |
12875
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1471 } |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1472 |
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1473 const TypeStackSlotEntries* args() const { |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1474 assert(has_arguments(), "no profiling of arguments"); |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1475 return &_args; |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1476 } |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1477 |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1478 const ReturnTypeEntry* ret() const { |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1479 assert(has_return(), "no profiling of return value"); |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1480 return &_ret; |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1481 } |
12875
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1482 |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1483 virtual bool is_VirtualCallTypeData() const { return true; } |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1484 |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1485 static int static_cell_count() { |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1486 return -1; |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1487 } |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1488 |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1489 static int compute_cell_count(BytecodeStream* stream) { |
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1490 return VirtualCallData::static_cell_count() + TypeEntriesAtCall::compute_cell_count(stream); |
12875
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1491 } |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1492 |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1493 static void initialize(DataLayout* dl, int cell_count) { |
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1494 TypeEntriesAtCall::initialize(dl, VirtualCallData::static_cell_count(), cell_count); |
12875
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1495 } |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1496 |
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1497 virtual void post_initialize(BytecodeStream* stream, MethodData* mdo); |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1498 |
12875
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1499 virtual int cell_count() const { |
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1500 return VirtualCallData::static_cell_count() + |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1501 TypeEntriesAtCall::header_cell_count() + |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1502 int_at_unchecked(cell_count_global_offset()); |
12875
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8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1503 } |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1504 |
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1505 int number_of_arguments() const { |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1506 return cell_count_no_header() / TypeStackSlotEntries::per_arg_count(); |
12875
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roland
parents:
12316
diff
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|
1507 } |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1508 |
d13d7aba8c12
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roland
parents:
12316
diff
changeset
|
1509 void set_argument_type(int i, Klass* k) { |
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1510 assert(has_arguments(), "no arguments!"); |
12875
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8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1511 intptr_t current = _args.type(i); |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1512 _args.set_type(i, TypeEntries::with_status(k, current)); |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1513 } |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1514 |
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1515 void set_return_type(Klass* k) { |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1516 assert(has_return(), "no return!"); |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1517 intptr_t current = _ret.type(); |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
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12875
diff
changeset
|
1518 _ret.set_type(TypeEntries::with_status(k, current)); |
ce0cc25bc5e2
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roland
parents:
12875
diff
changeset
|
1519 } |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1520 |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1521 // An entry for a return value takes less space than an entry for an |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
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changeset
|
1522 // argument, so if the remainder of the number of cells divided by |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
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changeset
|
1523 // the number of cells for an argument is not null, a return value |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
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changeset
|
1524 // is profiled in this object. |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1525 bool has_return() const { |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1526 bool res = (cell_count_no_header() % TypeStackSlotEntries::per_arg_count()) != 0; |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1527 assert (!res || TypeEntriesAtCall::return_profiling_enabled(), "no profiling of return values"); |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1528 return res; |
ce0cc25bc5e2
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roland
parents:
12875
diff
changeset
|
1529 } |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1530 |
12962
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1531 // An entry for a return value takes less space than an entry for an |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1532 // argument so if the number of cells exceeds the number of cells |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1533 // needed for an argument, this object contains type information for |
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1534 // at least one argument. |
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1535 bool has_arguments() const { |
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1536 bool res = cell_count_no_header() >= TypeStackSlotEntries::per_arg_count(); |
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1537 assert (!res || TypeEntriesAtCall::arguments_profiling_enabled(), "no profiling of arguments"); |
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1538 return res; |
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1539 } |
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1540 |
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1541 // Code generation support |
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1542 static ByteSize args_data_offset() { |
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1543 return cell_offset(VirtualCallData::static_cell_count()) + TypeEntriesAtCall::args_data_offset(); |
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1544 } |
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1545 |
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1546 // GC support |
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1547 virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure) { |
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1548 ReceiverTypeData::clean_weak_klass_links(is_alive_closure); |
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1549 if (has_arguments()) { |
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1550 _args.clean_weak_klass_links(is_alive_closure); |
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1551 } |
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1552 if (has_return()) { |
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1553 _ret.clean_weak_klass_links(is_alive_closure); |
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1554 } |
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1555 } |
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1556 |
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1557 #ifndef PRODUCT |
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1558 virtual void print_data_on(outputStream* st, const char* extra = NULL) const; |
0 | 1559 #endif |
1560 }; | |
1561 | |
1562 // RetData | |
1563 // | |
1564 // A RetData is used to access profiling information for a ret bytecode. | |
1565 // It is composed of a count of the number of times that the ret has | |
1566 // been executed, followed by a series of triples of the form | |
1567 // (bci, count, di) which count the number of times that some bci was the | |
1568 // target of the ret and cache a corresponding data displacement. | |
1569 class RetData : public CounterData { | |
1570 protected: | |
1571 enum { | |
1572 bci0_offset = counter_cell_count, | |
1573 count0_offset, | |
1574 displacement0_offset, | |
1575 ret_row_cell_count = (displacement0_offset + 1) - bci0_offset | |
1576 }; | |
1577 | |
1578 void set_bci(uint row, int bci) { | |
1579 assert((uint)row < row_limit(), "oob"); | |
1580 set_int_at(bci0_offset + row * ret_row_cell_count, bci); | |
1581 } | |
1582 void release_set_bci(uint row, int bci) { | |
1583 assert((uint)row < row_limit(), "oob"); | |
1584 // 'release' when setting the bci acts as a valid flag for other | |
1585 // threads wrt bci_count and bci_displacement. | |
1586 release_set_int_at(bci0_offset + row * ret_row_cell_count, bci); | |
1587 } | |
1588 void set_bci_count(uint row, uint count) { | |
1589 assert((uint)row < row_limit(), "oob"); | |
1590 set_uint_at(count0_offset + row * ret_row_cell_count, count); | |
1591 } | |
1592 void set_bci_displacement(uint row, int disp) { | |
1593 set_int_at(displacement0_offset + row * ret_row_cell_count, disp); | |
1594 } | |
1595 | |
1596 public: | |
1597 RetData(DataLayout* layout) : CounterData(layout) { | |
1598 assert(layout->tag() == DataLayout::ret_data_tag, "wrong type"); | |
1599 } | |
1600 | |
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1601 virtual bool is_RetData() const { return true; } |
0 | 1602 |
1603 enum { | |
1604 no_bci = -1 // value of bci when bci1/2 are not in use. | |
1605 }; | |
1606 | |
1607 static int static_cell_count() { | |
1608 return counter_cell_count + (uint) BciProfileWidth * ret_row_cell_count; | |
1609 } | |
1610 | |
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1611 virtual int cell_count() const { |
0 | 1612 return static_cell_count(); |
1613 } | |
1614 | |
1615 static uint row_limit() { | |
1616 return BciProfileWidth; | |
1617 } | |
1618 static int bci_cell_index(uint row) { | |
1619 return bci0_offset + row * ret_row_cell_count; | |
1620 } | |
1621 static int bci_count_cell_index(uint row) { | |
1622 return count0_offset + row * ret_row_cell_count; | |
1623 } | |
1624 static int bci_displacement_cell_index(uint row) { | |
1625 return displacement0_offset + row * ret_row_cell_count; | |
1626 } | |
1627 | |
1628 // Direct accessors | |
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1629 int bci(uint row) const { |
0 | 1630 return int_at(bci_cell_index(row)); |
1631 } | |
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1632 uint bci_count(uint row) const { |
0 | 1633 return uint_at(bci_count_cell_index(row)); |
1634 } | |
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1635 int bci_displacement(uint row) const { |
0 | 1636 return int_at(bci_displacement_cell_index(row)); |
1637 } | |
1638 | |
1639 // Interpreter Runtime support | |
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1640 address fixup_ret(int return_bci, MethodData* mdo); |
0 | 1641 |
1642 // Code generation support | |
1643 static ByteSize bci_offset(uint row) { | |
1644 return cell_offset(bci_cell_index(row)); | |
1645 } | |
1646 static ByteSize bci_count_offset(uint row) { | |
1647 return cell_offset(bci_count_cell_index(row)); | |
1648 } | |
1649 static ByteSize bci_displacement_offset(uint row) { | |
1650 return cell_offset(bci_displacement_cell_index(row)); | |
1651 } | |
1652 | |
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1653 #ifdef CC_INTERP |
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1654 static DataLayout* advance(MethodData *md, int bci); |
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1655 #endif // CC_INTERP |
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1656 |
0 | 1657 // Specific initialization. |
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1658 void post_initialize(BytecodeStream* stream, MethodData* mdo); |
0 | 1659 |
1660 #ifndef PRODUCT | |
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1661 void print_data_on(outputStream* st, const char* extra = NULL) const; |
0 | 1662 #endif |
1663 }; | |
1664 | |
1665 // BranchData | |
1666 // | |
1667 // A BranchData is used to access profiling data for a two-way branch. | |
1668 // It consists of taken and not_taken counts as well as a data displacement | |
1669 // for the taken case. | |
1670 class BranchData : public JumpData { | |
1671 protected: | |
1672 enum { | |
1673 not_taken_off_set = jump_cell_count, | |
1674 branch_cell_count | |
1675 }; | |
1676 | |
1677 void set_displacement(int displacement) { | |
1678 set_int_at(displacement_off_set, displacement); | |
1679 } | |
1680 | |
1681 public: | |
1682 BranchData(DataLayout* layout) : JumpData(layout) { | |
1683 assert(layout->tag() == DataLayout::branch_data_tag, "wrong type"); | |
1684 } | |
1685 | |
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1686 virtual bool is_BranchData() const { return true; } |
0 | 1687 |
1688 static int static_cell_count() { | |
1689 return branch_cell_count; | |
1690 } | |
1691 | |
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1692 virtual int cell_count() const { |
0 | 1693 return static_cell_count(); |
1694 } | |
1695 | |
1696 // Direct accessor | |
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1697 uint not_taken() const { |
0 | 1698 return uint_at(not_taken_off_set); |
1699 } | |
1700 | |
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1701 void set_not_taken(uint cnt) { |
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1702 set_uint_at(not_taken_off_set, cnt); |
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1703 } |
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1704 |
0 | 1705 uint inc_not_taken() { |
1706 uint cnt = not_taken() + 1; | |
1707 // Did we wrap? Will compiler screw us?? | |
1708 if (cnt == 0) cnt--; | |
1709 set_uint_at(not_taken_off_set, cnt); | |
1710 return cnt; | |
1711 } | |
1712 | |
1713 // Code generation support | |
1714 static ByteSize not_taken_offset() { | |
1715 return cell_offset(not_taken_off_set); | |
1716 } | |
1717 static ByteSize branch_data_size() { | |
1718 return cell_offset(branch_cell_count); | |
1719 } | |
1720 | |
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1721 #ifdef CC_INTERP |
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1722 static int branch_data_size_in_bytes() { |
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1723 return cell_offset_in_bytes(branch_cell_count); |
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1724 } |
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1725 |
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1726 static void increment_not_taken_count_no_overflow(DataLayout* layout) { |
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1727 increment_uint_at_no_overflow(layout, not_taken_off_set); |
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1728 } |
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1729 |
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1730 static DataLayout* advance_not_taken(DataLayout* layout) { |
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1731 return (DataLayout*) (((address)layout) + (ssize_t)BranchData::branch_data_size_in_bytes()); |
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1732 } |
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1733 #endif // CC_INTERP |
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1734 |
0 | 1735 // Specific initialization. |
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1736 void post_initialize(BytecodeStream* stream, MethodData* mdo); |
0 | 1737 |
1738 #ifndef PRODUCT | |
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1739 void print_data_on(outputStream* st, const char* extra = NULL) const; |
0 | 1740 #endif |
1741 }; | |
1742 | |
1743 // ArrayData | |
1744 // | |
1745 // A ArrayData is a base class for accessing profiling data which does | |
1746 // not have a statically known size. It consists of an array length | |
1747 // and an array start. | |
1748 class ArrayData : public ProfileData { | |
1749 protected: | |
1750 friend class DataLayout; | |
1751 | |
1752 enum { | |
1753 array_len_off_set, | |
1754 array_start_off_set | |
1755 }; | |
1756 | |
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1757 uint array_uint_at(int index) const { |
0 | 1758 int aindex = index + array_start_off_set; |
1759 return uint_at(aindex); | |
1760 } | |
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1761 int array_int_at(int index) const { |
0 | 1762 int aindex = index + array_start_off_set; |
1763 return int_at(aindex); | |
1764 } | |
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1765 oop array_oop_at(int index) const { |
0 | 1766 int aindex = index + array_start_off_set; |
1767 return oop_at(aindex); | |
1768 } | |
1769 void array_set_int_at(int index, int value) { | |
1770 int aindex = index + array_start_off_set; | |
1771 set_int_at(aindex, value); | |
1772 } | |
1773 | |
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1774 #ifdef CC_INTERP |
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1775 // Static low level accessors for DataLayout with ArrayData's semantics. |
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1776 |
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1777 static void increment_array_uint_at_no_overflow(DataLayout* layout, int index) { |
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1778 int aindex = index + array_start_off_set; |
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1779 increment_uint_at_no_overflow(layout, aindex); |
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1780 } |
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1781 |
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1782 static int array_int_at(DataLayout* layout, int index) { |
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1783 int aindex = index + array_start_off_set; |
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1784 return int_at(layout, aindex); |
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1785 } |
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1786 #endif // CC_INTERP |
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1787 |
0 | 1788 // Code generation support for subclasses. |
1789 static ByteSize array_element_offset(int index) { | |
1790 return cell_offset(array_start_off_set + index); | |
1791 } | |
1792 | |
1793 public: | |
1794 ArrayData(DataLayout* layout) : ProfileData(layout) {} | |
1795 | |
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1796 virtual bool is_ArrayData() const { return true; } |
0 | 1797 |
1798 static int static_cell_count() { | |
1799 return -1; | |
1800 } | |
1801 | |
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1802 int array_len() const { |
0 | 1803 return int_at_unchecked(array_len_off_set); |
1804 } | |
1805 | |
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1806 virtual int cell_count() const { |
0 | 1807 return array_len() + 1; |
1808 } | |
1809 | |
1810 // Code generation support | |
1811 static ByteSize array_len_offset() { | |
1812 return cell_offset(array_len_off_set); | |
1813 } | |
1814 static ByteSize array_start_offset() { | |
1815 return cell_offset(array_start_off_set); | |
1816 } | |
1817 }; | |
1818 | |
1819 // MultiBranchData | |
1820 // | |
1821 // A MultiBranchData is used to access profiling information for | |
1822 // a multi-way branch (*switch bytecodes). It consists of a series | |
1823 // of (count, displacement) pairs, which count the number of times each | |
1824 // case was taken and specify the data displacment for each branch target. | |
1825 class MultiBranchData : public ArrayData { | |
1826 protected: | |
1827 enum { | |
1828 default_count_off_set, | |
1829 default_disaplacement_off_set, | |
1830 case_array_start | |
1831 }; | |
1832 enum { | |
1833 relative_count_off_set, | |
1834 relative_displacement_off_set, | |
1835 per_case_cell_count | |
1836 }; | |
1837 | |
1838 void set_default_displacement(int displacement) { | |
1839 array_set_int_at(default_disaplacement_off_set, displacement); | |
1840 } | |
1841 void set_displacement_at(int index, int displacement) { | |
1842 array_set_int_at(case_array_start + | |
1843 index * per_case_cell_count + | |
1844 relative_displacement_off_set, | |
1845 displacement); | |
1846 } | |
1847 | |
1848 public: | |
1849 MultiBranchData(DataLayout* layout) : ArrayData(layout) { | |
1850 assert(layout->tag() == DataLayout::multi_branch_data_tag, "wrong type"); | |
1851 } | |
1852 | |
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1853 virtual bool is_MultiBranchData() const { return true; } |
0 | 1854 |
1855 static int compute_cell_count(BytecodeStream* stream); | |
1856 | |
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1857 int number_of_cases() const { |
0 | 1858 int alen = array_len() - 2; // get rid of default case here. |
1859 assert(alen % per_case_cell_count == 0, "must be even"); | |
1860 return (alen / per_case_cell_count); | |
1861 } | |
1862 | |
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1863 uint default_count() const { |
0 | 1864 return array_uint_at(default_count_off_set); |
1865 } | |
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1866 int default_displacement() const { |
0 | 1867 return array_int_at(default_disaplacement_off_set); |
1868 } | |
1869 | |
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1870 uint count_at(int index) const { |
0 | 1871 return array_uint_at(case_array_start + |
1872 index * per_case_cell_count + | |
1873 relative_count_off_set); | |
1874 } | |
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1875 int displacement_at(int index) const { |
0 | 1876 return array_int_at(case_array_start + |
1877 index * per_case_cell_count + | |
1878 relative_displacement_off_set); | |
1879 } | |
1880 | |
1881 // Code generation support | |
1882 static ByteSize default_count_offset() { | |
1883 return array_element_offset(default_count_off_set); | |
1884 } | |
1885 static ByteSize default_displacement_offset() { | |
1886 return array_element_offset(default_disaplacement_off_set); | |
1887 } | |
1888 static ByteSize case_count_offset(int index) { | |
1889 return case_array_offset() + | |
1890 (per_case_size() * index) + | |
1891 relative_count_offset(); | |
1892 } | |
1893 static ByteSize case_array_offset() { | |
1894 return array_element_offset(case_array_start); | |
1895 } | |
1896 static ByteSize per_case_size() { | |
1897 return in_ByteSize(per_case_cell_count) * cell_size; | |
1898 } | |
1899 static ByteSize relative_count_offset() { | |
1900 return in_ByteSize(relative_count_off_set) * cell_size; | |
1901 } | |
1902 static ByteSize relative_displacement_offset() { | |
1903 return in_ByteSize(relative_displacement_off_set) * cell_size; | |
1904 } | |
1905 | |
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1906 #ifdef CC_INTERP |
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1907 static void increment_count_no_overflow(DataLayout* layout, int index) { |
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1908 if (index == -1) { |
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1909 increment_array_uint_at_no_overflow(layout, default_count_off_set); |
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1910 } else { |
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1911 increment_array_uint_at_no_overflow(layout, case_array_start + |
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1912 index * per_case_cell_count + |
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1913 relative_count_off_set); |
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1914 } |
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1915 } |
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1916 |
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1917 static DataLayout* advance(DataLayout* layout, int index) { |
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1918 if (index == -1) { |
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1919 return (DataLayout*) (((address)layout) + (ssize_t)array_int_at(layout, default_disaplacement_off_set)); |
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1920 } else { |
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1921 return (DataLayout*) (((address)layout) + (ssize_t)array_int_at(layout, case_array_start + |
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1922 index * per_case_cell_count + |
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1923 relative_displacement_off_set)); |
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1924 } |
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1925 } |
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1926 #endif // CC_INTERP |
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1927 |
0 | 1928 // Specific initialization. |
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1929 void post_initialize(BytecodeStream* stream, MethodData* mdo); |
0 | 1930 |
1931 #ifndef PRODUCT | |
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1932 void print_data_on(outputStream* st, const char* extra = NULL) const; |
0 | 1933 #endif |
1934 }; | |
1935 | |
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1936 class ArgInfoData : public ArrayData { |
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1937 |
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1938 public: |
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1939 ArgInfoData(DataLayout* layout) : ArrayData(layout) { |
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1940 assert(layout->tag() == DataLayout::arg_info_data_tag, "wrong type"); |
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1941 } |
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1942 |
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1943 virtual bool is_ArgInfoData() const { return true; } |
45
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1944 |
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1945 |
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1946 int number_of_args() const { |
45
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1947 return array_len(); |
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1948 } |
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1949 |
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1950 uint arg_modified(int arg) const { |
45
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1951 return array_uint_at(arg); |
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1952 } |
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1953 |
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1954 void set_arg_modified(int arg, uint val) { |
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1955 array_set_int_at(arg, val); |
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1956 } |
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1957 |
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1958 #ifndef PRODUCT |
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1959 void print_data_on(outputStream* st, const char* extra = NULL) const; |
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1960 #endif |
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1961 }; |
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1962 |
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1963 // ParametersTypeData |
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1964 // |
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1965 // A ParametersTypeData is used to access profiling information about |
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1966 // types of parameters to a method |
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1967 class ParametersTypeData : public ArrayData { |
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1968 |
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1969 private: |
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1970 TypeStackSlotEntries _parameters; |
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1971 |
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1972 static int stack_slot_local_offset(int i) { |
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1973 assert_profiling_enabled(); |
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1974 return array_start_off_set + TypeStackSlotEntries::stack_slot_local_offset(i); |
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1975 } |
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1976 |
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1977 static int type_local_offset(int i) { |
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1978 assert_profiling_enabled(); |
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1979 return array_start_off_set + TypeStackSlotEntries::type_local_offset(i); |
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1980 } |
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1981 |
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1982 static bool profiling_enabled(); |
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1983 static void assert_profiling_enabled() { |
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1984 assert(profiling_enabled(), "method parameters profiling should be on"); |
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1985 } |
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1986 |
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1987 public: |
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1988 ParametersTypeData(DataLayout* layout) : ArrayData(layout), _parameters(1, number_of_parameters()) { |
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1989 assert(layout->tag() == DataLayout::parameters_type_data_tag, "wrong type"); |
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1990 // Some compilers (VC++) don't want this passed in member initialization list |
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1991 _parameters.set_profile_data(this); |
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1992 } |
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1993 |
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1994 static int compute_cell_count(Method* m); |
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1995 |
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1996 virtual bool is_ParametersTypeData() const { return true; } |
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1997 |
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1998 virtual void post_initialize(BytecodeStream* stream, MethodData* mdo); |
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1999 |
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2000 int number_of_parameters() const { |
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2001 return array_len() / TypeStackSlotEntries::per_arg_count(); |
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2002 } |
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2003 |
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2004 const TypeStackSlotEntries* parameters() const { return &_parameters; } |
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2005 |
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2006 uint stack_slot(int i) const { |
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2007 return _parameters.stack_slot(i); |
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2008 } |
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2009 |
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2010 void set_type(int i, Klass* k) { |
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2011 intptr_t current = _parameters.type(i); |
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2012 _parameters.set_type(i, TypeEntries::with_status((intptr_t)k, current)); |
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2013 } |
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2014 |
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2015 virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure) { |
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2016 _parameters.clean_weak_klass_links(is_alive_closure); |
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2017 } |
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2018 |
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2019 #ifndef PRODUCT |
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2020 virtual void print_data_on(outputStream* st, const char* extra = NULL) const; |
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2021 #endif |
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2022 |
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2023 static ByteSize stack_slot_offset(int i) { |
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2024 return cell_offset(stack_slot_local_offset(i)); |
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2025 } |
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2026 |
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2027 static ByteSize type_offset(int i) { |
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2028 return cell_offset(type_local_offset(i)); |
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2029 } |
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2030 }; |
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2031 |
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2032 // SpeculativeTrapData |
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2033 // |
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2034 // A SpeculativeTrapData is used to record traps due to type |
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2035 // speculation. It records the root of the compilation: that type |
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2036 // speculation is wrong in the context of one compilation (for |
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2037 // method1) doesn't mean it's wrong in the context of another one (for |
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2038 // method2). Type speculation could have more/different data in the |
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2039 // context of the compilation of method2 and it's worthwhile to try an |
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2040 // optimization that failed for compilation of method1 in the context |
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2041 // of compilation of method2. |
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2042 // Space for SpeculativeTrapData entries is allocated from the extra |
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2043 // data space in the MDO. If we run out of space, the trap data for |
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2044 // the ProfileData at that bci is updated. |
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2045 class SpeculativeTrapData : public ProfileData { |
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2046 protected: |
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2047 enum { |
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2048 method_offset, |
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2049 speculative_trap_cell_count |
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2050 }; |
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2051 public: |
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2052 SpeculativeTrapData(DataLayout* layout) : ProfileData(layout) { |
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2053 assert(layout->tag() == DataLayout::speculative_trap_data_tag, "wrong type"); |
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2054 } |
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2055 |
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2056 virtual bool is_SpeculativeTrapData() const { return true; } |
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2057 |
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2058 static int static_cell_count() { |
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2059 return speculative_trap_cell_count; |
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2060 } |
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2061 |
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2062 virtual int cell_count() const { |
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2063 return static_cell_count(); |
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2064 } |
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2065 |
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2066 // Direct accessor |
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2067 Method* method() const { |
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2068 return (Method*)intptr_at(method_offset); |
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2069 } |
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2070 |
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2071 void set_method(Method* m) { |
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2072 set_intptr_at(method_offset, (intptr_t)m); |
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2073 } |
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2074 |
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2075 #ifndef PRODUCT |
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2076 virtual void print_data_on(outputStream* st, const char* extra = NULL) const; |
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2077 #endif |
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2078 }; |
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2079 |
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2080 // MethodData* |
0 | 2081 // |
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2082 // A MethodData* holds information which has been collected about |
0 | 2083 // a method. Its layout looks like this: |
2084 // | |
2085 // ----------------------------- | |
2086 // | header | | |
2087 // | klass | | |
2088 // ----------------------------- | |
2089 // | method | | |
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2090 // | size of the MethodData* | |
0 | 2091 // ----------------------------- |
2092 // | Data entries... | | |
2093 // | (variable size) | | |
2094 // | | | |
2095 // . . | |
2096 // . . | |
2097 // . . | |
2098 // | | | |
2099 // ----------------------------- | |
2100 // | |
2101 // The data entry area is a heterogeneous array of DataLayouts. Each | |
2102 // DataLayout in the array corresponds to a specific bytecode in the | |
2103 // method. The entries in the array are sorted by the corresponding | |
2104 // bytecode. Access to the data is via resource-allocated ProfileData, | |
2105 // which point to the underlying blocks of DataLayout structures. | |
2106 // | |
2107 // During interpretation, if profiling in enabled, the interpreter | |
2108 // maintains a method data pointer (mdp), which points at the entry | |
2109 // in the array corresponding to the current bci. In the course of | |
2110 // intepretation, when a bytecode is encountered that has profile data | |
2111 // associated with it, the entry pointed to by mdp is updated, then the | |
2112 // mdp is adjusted to point to the next appropriate DataLayout. If mdp | |
2113 // is NULL to begin with, the interpreter assumes that the current method | |
2114 // is not (yet) being profiled. | |
2115 // | |
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2116 // In MethodData* parlance, "dp" is a "data pointer", the actual address |
0 | 2117 // of a DataLayout element. A "di" is a "data index", the offset in bytes |
2118 // from the base of the data entry array. A "displacement" is the byte offset | |
2119 // in certain ProfileData objects that indicate the amount the mdp must be | |
2120 // adjusted in the event of a change in control flow. | |
2121 // | |
2122 | |
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2123 CC_INTERP_ONLY(class BytecodeInterpreter;) |
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2124 |
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2125 class MethodData : public Metadata { |
0 | 2126 friend class VMStructs; |
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2127 CC_INTERP_ONLY(friend class BytecodeInterpreter;) |
0 | 2128 private: |
2129 friend class ProfileData; | |
2130 | |
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2131 // Back pointer to the Method* |
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2132 Method* _method; |
0 | 2133 |
2134 // Size of this oop in bytes | |
2135 int _size; | |
2136 | |
2137 // Cached hint for bci_to_dp and bci_to_data | |
2138 int _hint_di; | |
2139 | |
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2140 Mutex _extra_data_lock; |
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2141 |
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2142 MethodData(methodHandle method, int size, TRAPS); |
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2143 public: |
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2144 static MethodData* allocate(ClassLoaderData* loader_data, methodHandle method, TRAPS); |
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2145 MethodData() : _extra_data_lock(Monitor::leaf, "MDO extra data lock") {}; // For ciMethodData |
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2146 |
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2147 bool is_methodData() const volatile { return true; } |
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2148 void initialize(bool for_reprofile = false); |
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2149 |
0 | 2150 // Whole-method sticky bits and flags |
2151 enum { | |
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2152 #ifdef GRAAL |
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2153 _trap_hist_limit = 18, // decoupled from Deoptimization::Reason_LIMIT |
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2154 #else |
3345 | 2155 _trap_hist_limit = 17, // decoupled from Deoptimization::Reason_LIMIT |
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2156 #endif |
0 | 2157 _trap_hist_mask = max_jubyte, |
2158 _extra_data_count = 4 // extra DataLayout headers, for trap history | |
2159 }; // Public flag values | |
2160 private: | |
2161 uint _nof_decompiles; // count of all nmethod removals | |
2162 uint _nof_overflow_recompiles; // recompile count, excluding recomp. bits | |
2163 uint _nof_overflow_traps; // trap count, excluding _trap_hist | |
2164 union { | |
2165 intptr_t _align; | |
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2166 #ifdef GRAAL |
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2167 u1 _array[2*_trap_hist_limit]; |
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2168 #else |
0 | 2169 u1 _array[_trap_hist_limit]; |
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2170 #endif |
0 | 2171 } _trap_hist; |
2172 | |
2173 // Support for interprocedural escape analysis, from Thomas Kotzmann. | |
2174 intx _eflags; // flags on escape information | |
2175 intx _arg_local; // bit set of non-escaping arguments | |
2176 intx _arg_stack; // bit set of stack-allocatable arguments | |
2177 intx _arg_returned; // bit set of returned arguments | |
2178 | |
1783 | 2179 int _creation_mileage; // method mileage at MDO creation |
2180 | |
2181 // How many invocations has this MDO seen? | |
2182 // These counters are used to determine the exact age of MDO. | |
2183 // We need those because in tiered a method can be concurrently | |
2184 // executed at different levels. | |
2185 InvocationCounter _invocation_counter; | |
2186 // Same for backedges. | |
2187 InvocationCounter _backedge_counter; | |
2252 | 2188 // Counter values at the time profiling started. |
2189 int _invocation_counter_start; | |
2190 int _backedge_counter_start; | |
1783 | 2191 // Number of loops and blocks is computed when compiling the first |
2192 // time with C1. It is used to determine if method is trivial. | |
2193 short _num_loops; | |
2194 short _num_blocks; | |
2195 // Highest compile level this method has ever seen. | |
2196 u1 _highest_comp_level; | |
2197 // Same for OSR level | |
2198 u1 _highest_osr_comp_level; | |
2199 // Does this method contain anything worth profiling? | |
2200 bool _would_profile; | |
0 | 2201 |
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2202 #ifdef GRAAL |
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2203 // Support for HotSpotMethodData.setCompiledGraphSize(int) |
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2204 int _graal_node_count; |
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2205 #endif |
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2206 |
0 | 2207 // Size of _data array in bytes. (Excludes header and extra_data fields.) |
2208 int _data_size; | |
2209 | |
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2210 // data index for the area dedicated to parameters. -1 if no |
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|
2211 // parameter profiling. |
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|
2212 int _parameters_type_data_di; |
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2213 |
0 | 2214 // Beginning of the data entries |
2215 intptr_t _data[1]; | |
2216 | |
2217 // Helper for size computation | |
2218 static int compute_data_size(BytecodeStream* stream); | |
2219 static int bytecode_cell_count(Bytecodes::Code code); | |
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2220 static bool is_speculative_trap_bytecode(Bytecodes::Code code); |
0 | 2221 enum { no_profile_data = -1, variable_cell_count = -2 }; |
2222 | |
2223 // Helper for initialization | |
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2224 DataLayout* data_layout_at(int data_index) const { |
0 | 2225 assert(data_index % sizeof(intptr_t) == 0, "unaligned"); |
2226 return (DataLayout*) (((address)_data) + data_index); | |
2227 } | |
2228 | |
2229 // Initialize an individual data segment. Returns the size of | |
2230 // the segment in bytes. | |
2231 int initialize_data(BytecodeStream* stream, int data_index); | |
2232 | |
2233 // Helper for data_at | |
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2234 DataLayout* limit_data_position() const { |
0 | 2235 return (DataLayout*)((address)data_base() + _data_size); |
2236 } | |
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2237 bool out_of_bounds(int data_index) const { |
0 | 2238 return data_index >= data_size(); |
2239 } | |
2240 | |
2241 // Give each of the data entries a chance to perform specific | |
2242 // data initialization. | |
2243 void post_initialize(BytecodeStream* stream); | |
2244 | |
2245 // hint accessors | |
2246 int hint_di() const { return _hint_di; } | |
2247 void set_hint_di(int di) { | |
2248 assert(!out_of_bounds(di), "hint_di out of bounds"); | |
2249 _hint_di = di; | |
2250 } | |
2251 ProfileData* data_before(int bci) { | |
2252 // avoid SEGV on this edge case | |
2253 if (data_size() == 0) | |
2254 return NULL; | |
2255 int hint = hint_di(); | |
2256 if (data_layout_at(hint)->bci() <= bci) | |
2257 return data_at(hint); | |
2258 return first_data(); | |
2259 } | |
2260 | |
2261 // What is the index of the first data entry? | |
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2262 int first_di() const { return 0; } |
0 | 2263 |
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2264 ProfileData* bci_to_extra_data_helper(int bci, Method* m, DataLayout*& dp, bool concurrent); |
0 | 2265 // Find or create an extra ProfileData: |
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2266 ProfileData* bci_to_extra_data(int bci, Method* m, bool create_if_missing); |
0 | 2267 |
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2268 // return the argument info cell |
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2269 ArgInfoData *arg_info(); |
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2270 |
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2271 enum { |
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2272 no_type_profile = 0, |
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2273 type_profile_jsr292 = 1, |
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2274 type_profile_all = 2 |
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2275 }; |
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2276 |
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2277 static bool profile_jsr292(methodHandle m, int bci); |
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2278 static int profile_arguments_flag(); |
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2279 static bool profile_arguments_jsr292_only(); |
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2280 static bool profile_all_arguments(); |
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2281 static bool profile_arguments_for_invoke(methodHandle m, int bci); |
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2282 static int profile_return_flag(); |
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2283 static bool profile_all_return(); |
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2284 static bool profile_return_for_invoke(methodHandle m, int bci); |
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2285 static int profile_parameters_flag(); |
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2286 static bool profile_parameters_jsr292_only(); |
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2287 static bool profile_all_parameters(); |
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2288 |
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2289 void clean_extra_data(BoolObjectClosure* is_alive); |
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2290 void clean_extra_data_helper(DataLayout* dp, int shift, bool reset = false); |
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2291 void verify_extra_data_clean(BoolObjectClosure* is_alive); |
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2292 |
0 | 2293 public: |
2294 static int header_size() { | |
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2295 return sizeof(MethodData)/wordSize; |
0 | 2296 } |
2297 | |
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2298 // Compute the size of a MethodData* before it is created. |
0 | 2299 static int compute_allocation_size_in_bytes(methodHandle method); |
2300 static int compute_allocation_size_in_words(methodHandle method); | |
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2301 static int compute_extra_data_count(int data_size, int empty_bc_count, bool needs_speculative_traps); |
0 | 2302 |
2303 // Determine if a given bytecode can have profile information. | |
2304 static bool bytecode_has_profile(Bytecodes::Code code) { | |
2305 return bytecode_cell_count(code) != no_profile_data; | |
2306 } | |
2307 | |
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2308 // reset into original state |
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2309 void init(); |
0 | 2310 |
2311 // My size | |
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2312 int size_in_bytes() const { return _size; } |
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2313 int size() const { return align_object_size(align_size_up(_size, BytesPerWord)/BytesPerWord); } |
7956 | 2314 #if INCLUDE_SERVICES |
2315 void collect_statistics(KlassSizeStats *sz) const; | |
2316 #endif | |
0 | 2317 |
2318 int creation_mileage() const { return _creation_mileage; } | |
2319 void set_creation_mileage(int x) { _creation_mileage = x; } | |
1783 | 2320 |
2321 int invocation_count() { | |
2322 if (invocation_counter()->carry()) { | |
2323 return InvocationCounter::count_limit; | |
2324 } | |
2325 return invocation_counter()->count(); | |
2326 } | |
2327 int backedge_count() { | |
2328 if (backedge_counter()->carry()) { | |
2329 return InvocationCounter::count_limit; | |
2330 } | |
2331 return backedge_counter()->count(); | |
2332 } | |
2333 | |
2252 | 2334 int invocation_count_start() { |
2335 if (invocation_counter()->carry()) { | |
2336 return 0; | |
2337 } | |
2338 return _invocation_counter_start; | |
2339 } | |
2340 | |
2341 int backedge_count_start() { | |
2342 if (backedge_counter()->carry()) { | |
2343 return 0; | |
2344 } | |
2345 return _backedge_counter_start; | |
2346 } | |
2347 | |
2348 int invocation_count_delta() { return invocation_count() - invocation_count_start(); } | |
2349 int backedge_count_delta() { return backedge_count() - backedge_count_start(); } | |
2350 | |
2351 void reset_start_counters() { | |
2352 _invocation_counter_start = invocation_count(); | |
2353 _backedge_counter_start = backedge_count(); | |
2354 } | |
2355 | |
1783 | 2356 InvocationCounter* invocation_counter() { return &_invocation_counter; } |
2357 InvocationCounter* backedge_counter() { return &_backedge_counter; } | |
2358 | |
2359 void set_would_profile(bool p) { _would_profile = p; } | |
2360 bool would_profile() const { return _would_profile; } | |
2361 | |
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2362 int highest_comp_level() const { return _highest_comp_level; } |
1783 | 2363 void set_highest_comp_level(int level) { _highest_comp_level = level; } |
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2364 int highest_osr_comp_level() const { return _highest_osr_comp_level; } |
1783 | 2365 void set_highest_osr_comp_level(int level) { _highest_osr_comp_level = level; } |
2366 | |
2367 int num_loops() const { return _num_loops; } | |
2368 void set_num_loops(int n) { _num_loops = n; } | |
2369 int num_blocks() const { return _num_blocks; } | |
2370 void set_num_blocks(int n) { _num_blocks = n; } | |
2371 | |
0 | 2372 bool is_mature() const; // consult mileage and ProfileMaturityPercentage |
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2373 static int mileage_of(Method* m); |
0 | 2374 |
2375 // Support for interprocedural escape analysis, from Thomas Kotzmann. | |
2376 enum EscapeFlag { | |
2377 estimated = 1 << 0, | |
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2378 return_local = 1 << 1, |
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2379 return_allocated = 1 << 2, |
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2380 allocated_escapes = 1 << 3, |
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2381 unknown_modified = 1 << 4 |
0 | 2382 }; |
2383 | |
2384 intx eflags() { return _eflags; } | |
2385 intx arg_local() { return _arg_local; } | |
2386 intx arg_stack() { return _arg_stack; } | |
2387 intx arg_returned() { return _arg_returned; } | |
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2388 uint arg_modified(int a) { ArgInfoData *aid = arg_info(); |
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2389 assert(aid != NULL, "arg_info must be not null"); |
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2390 assert(a >= 0 && a < aid->number_of_args(), "valid argument number"); |
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2391 return aid->arg_modified(a); } |
0 | 2392 |
2393 void set_eflags(intx v) { _eflags = v; } | |
2394 void set_arg_local(intx v) { _arg_local = v; } | |
2395 void set_arg_stack(intx v) { _arg_stack = v; } | |
2396 void set_arg_returned(intx v) { _arg_returned = v; } | |
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2397 void set_arg_modified(int a, uint v) { ArgInfoData *aid = arg_info(); |
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2398 assert(aid != NULL, "arg_info must be not null"); |
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2399 assert(a >= 0 && a < aid->number_of_args(), "valid argument number"); |
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2400 aid->set_arg_modified(a, v); } |
0 | 2401 |
2402 void clear_escape_info() { _eflags = _arg_local = _arg_stack = _arg_returned = 0; } | |
2403 | |
2404 // Location and size of data area | |
2405 address data_base() const { | |
2406 return (address) _data; | |
2407 } | |
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2408 int data_size() const { |
0 | 2409 return _data_size; |
2410 } | |
2411 | |
2412 // Accessors | |
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2413 Method* method() const { return _method; } |
0 | 2414 |
2415 // Get the data at an arbitrary (sort of) data index. | |
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2416 ProfileData* data_at(int data_index) const; |
0 | 2417 |
2418 // Walk through the data in order. | |
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2419 ProfileData* first_data() const { return data_at(first_di()); } |
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2420 ProfileData* next_data(ProfileData* current) const; |
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2421 bool is_valid(ProfileData* current) const { return current != NULL; } |
0 | 2422 |
2423 // Convert a dp (data pointer) to a di (data index). | |
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2424 int dp_to_di(address dp) const { |
0 | 2425 return dp - ((address)_data); |
2426 } | |
2427 | |
2428 address di_to_dp(int di) { | |
2429 return (address)data_layout_at(di); | |
2430 } | |
2431 | |
2432 // bci to di/dp conversion. | |
2433 address bci_to_dp(int bci); | |
2434 int bci_to_di(int bci) { | |
2435 return dp_to_di(bci_to_dp(bci)); | |
2436 } | |
2437 | |
2438 // Get the data at an arbitrary bci, or NULL if there is none. | |
2439 ProfileData* bci_to_data(int bci); | |
2440 | |
2441 // Same, but try to create an extra_data record if one is needed: | |
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2442 ProfileData* allocate_bci_to_data(int bci, Method* m) { |
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2443 ProfileData* data = NULL; |
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2444 // If m not NULL, try to allocate a SpeculativeTrapData entry |
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2445 if (m == NULL) { |
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2446 data = bci_to_data(bci); |
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2447 } |
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2448 if (data != NULL) { |
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2449 return data; |
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2450 } |
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2451 data = bci_to_extra_data(bci, m, true); |
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2452 if (data != NULL) { |
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2453 return data; |
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2454 } |
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2455 // If SpeculativeTrapData allocation fails try to allocate a |
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2456 // regular entry |
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2457 data = bci_to_data(bci); |
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2458 if (data != NULL) { |
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2459 return data; |
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2460 } |
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2461 return bci_to_extra_data(bci, NULL, true); |
0 | 2462 } |
2463 | |
2464 // Add a handful of extra data records, for trap tracking. | |
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2465 DataLayout* extra_data_base() const { return limit_data_position(); } |
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2466 DataLayout* extra_data_limit() const { return (DataLayout*)((address)this + size_in_bytes()); } |
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2467 int extra_data_size() const { return (address)extra_data_limit() |
0 | 2468 - (address)extra_data_base(); } |
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2469 static DataLayout* next_extra(DataLayout* dp); |
0 | 2470 |
2471 // Return (uint)-1 for overflow. | |
2472 uint trap_count(int reason) const { | |
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2473 assert((uint)reason < GRAAL_ONLY(2*) _trap_hist_limit, "oob"); |
0 | 2474 return (int)((_trap_hist._array[reason]+1) & _trap_hist_mask) - 1; |
2475 } | |
2476 // For loops: | |
2477 static uint trap_reason_limit() { return _trap_hist_limit; } | |
2478 static uint trap_count_limit() { return _trap_hist_mask; } | |
2479 uint inc_trap_count(int reason) { | |
2480 // Count another trap, anywhere in this method. | |
2481 assert(reason >= 0, "must be single trap"); | |
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|
2482 assert((uint)reason < GRAAL_ONLY(2*) _trap_hist_limit, "oob"); |
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|
2483 uint cnt1 = 1 + _trap_hist._array[reason]; |
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2484 if ((cnt1 & _trap_hist_mask) != 0) { // if no counter overflow... |
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2485 _trap_hist._array[reason] = cnt1; |
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2486 return cnt1; |
0 | 2487 } else { |
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2488 return _trap_hist_mask + (++_nof_overflow_traps); |
0 | 2489 } |
2490 } | |
2491 | |
2492 uint overflow_trap_count() const { | |
2493 return _nof_overflow_traps; | |
2494 } | |
2495 uint overflow_recompile_count() const { | |
2496 return _nof_overflow_recompiles; | |
2497 } | |
2498 void inc_overflow_recompile_count() { | |
2499 _nof_overflow_recompiles += 1; | |
2500 } | |
2501 uint decompile_count() const { | |
2502 return _nof_decompiles; | |
2503 } | |
2504 void inc_decompile_count() { | |
2505 _nof_decompiles += 1; | |
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2506 if (decompile_count() > (uint)PerMethodRecompilationCutoff) { |
7998 | 2507 method()->set_not_compilable(CompLevel_full_optimization, true, "decompile_count > PerMethodRecompilationCutoff"); |
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2508 } |
0 | 2509 } |
2510 | |
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2511 // Return pointer to area dedicated to parameters in MDO |
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2512 ParametersTypeData* parameters_type_data() const { |
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2513 return _parameters_type_data_di != -1 ? data_layout_at(_parameters_type_data_di)->data_in()->as_ParametersTypeData() : NULL; |
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2514 } |
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2515 |
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2516 int parameters_type_data_di() const { |
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2517 assert(_parameters_type_data_di != -1, "no args type data"); |
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2518 return _parameters_type_data_di; |
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2519 } |
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2520 |
0 | 2521 // Support for code generation |
2522 static ByteSize data_offset() { | |
6725
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2523 return byte_offset_of(MethodData, _data[0]); |
0 | 2524 } |
2525 | |
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2526 static ByteSize trap_history_offset() { |
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2527 return byte_offset_of(MethodData, _trap_hist._array); |
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2528 } |
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2529 |
1783 | 2530 static ByteSize invocation_counter_offset() { |
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2531 return byte_offset_of(MethodData, _invocation_counter); |
1783 | 2532 } |
2533 static ByteSize backedge_counter_offset() { | |
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2534 return byte_offset_of(MethodData, _backedge_counter); |
1783 | 2535 } |
2536 | |
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2537 static ByteSize parameters_type_data_di_offset() { |
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2538 return byte_offset_of(MethodData, _parameters_type_data_di); |
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2539 } |
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2540 |
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2541 // Deallocation support - no pointer fields to deallocate |
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2542 void deallocate_contents(ClassLoaderData* loader_data) {} |
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2543 |
0 | 2544 // GC support |
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2545 void set_size(int object_size_in_bytes) { _size = object_size_in_bytes; } |
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2546 |
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2547 // Printing |
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2548 #ifndef PRODUCT |
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2549 void print_on (outputStream* st) const; |
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2550 #endif |
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2551 void print_value_on(outputStream* st) const; |
0 | 2552 |
2553 #ifndef PRODUCT | |
2554 // printing support for method data | |
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2555 void print_data_on(outputStream* st) const; |
0 | 2556 #endif |
2557 | |
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2558 const char* internal_name() const { return "{method data}"; } |
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2559 |
0 | 2560 // verification |
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2561 void verify_on(outputStream* st); |
0 | 2562 void verify_data_on(outputStream* st); |
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2563 |
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2564 static bool profile_parameters_for_method(methodHandle m); |
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2565 static bool profile_arguments(); |
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2566 static bool profile_return(); |
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2567 static bool profile_parameters(); |
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2568 static bool profile_return_jsr292_only(); |
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2569 |
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2570 void clean_method_data(BoolObjectClosure* is_alive); |
0 | 2571 }; |
1972 | 2572 |
2573 #endif // SHARE_VM_OOPS_METHODDATAOOP_HPP |