Mercurial > hg > truffle
annotate src/share/vm/oops/methodData.hpp @ 17780:606acabe7b5c
8031320: Use Intel RTM instructions for locks
Summary: Use RTM for inflated locks and stack locks.
Reviewed-by: iveresov, twisti, roland, dcubed
author | kvn |
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date | Thu, 20 Mar 2014 17:49:27 -0700 |
parents | 1a43981d86ea |
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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 } |
231 // Return a value which, when or-ed as a byte into _flags, sets the flag. | |
232 static int flag_number_to_byte_constant(int flag_number) { | |
233 assert(0 <= flag_number && flag_number < flag_limit, "oob"); | |
234 DataLayout temp; temp.set_header(0); | |
235 temp.set_flag_at(flag_number); | |
236 return temp._header._struct._flags; | |
237 } | |
238 // Return a value which, when or-ed as a word into _header, sets the flag. | |
239 static intptr_t flag_mask_to_header_mask(int byte_constant) { | |
240 DataLayout temp; temp.set_header(0); | |
241 temp._header._struct._flags = byte_constant; | |
242 return temp._header._bits; | |
243 } | |
941 | 244 |
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245 ProfileData* data_in(); |
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246 |
941 | 247 // GC support |
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248 void clean_weak_klass_links(BoolObjectClosure* cl); |
0 | 249 }; |
250 | |
251 | |
252 // ProfileData class hierarchy | |
253 class ProfileData; | |
254 class BitData; | |
255 class CounterData; | |
256 class ReceiverTypeData; | |
257 class VirtualCallData; | |
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258 class VirtualCallTypeData; |
0 | 259 class RetData; |
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260 class CallTypeData; |
0 | 261 class JumpData; |
262 class BranchData; | |
263 class ArrayData; | |
264 class MultiBranchData; | |
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265 class ArgInfoData; |
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266 class ParametersTypeData; |
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267 class SpeculativeTrapData; |
0 | 268 |
269 // ProfileData | |
270 // | |
271 // A ProfileData object is created to refer to a section of profiling | |
272 // data in a structured way. | |
273 class ProfileData : public ResourceObj { | |
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274 friend class TypeEntries; |
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275 friend class ReturnTypeEntry; |
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276 friend class TypeStackSlotEntries; |
0 | 277 private: |
278 #ifndef PRODUCT | |
279 enum { | |
280 tab_width_one = 16, | |
281 tab_width_two = 36 | |
282 }; | |
283 #endif // !PRODUCT | |
284 | |
285 // This is a pointer to a section of profiling data. | |
286 DataLayout* _data; | |
287 | |
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288 char* print_data_on_helper(const MethodData* md) const; |
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289 |
0 | 290 protected: |
291 DataLayout* data() { return _data; } | |
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292 const DataLayout* data() const { return _data; } |
0 | 293 |
294 enum { | |
295 cell_size = DataLayout::cell_size | |
296 }; | |
297 | |
298 public: | |
299 // How many cells are in this? | |
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300 virtual int cell_count() const { |
0 | 301 ShouldNotReachHere(); |
302 return -1; | |
303 } | |
304 | |
305 // Return the size of this data. | |
306 int size_in_bytes() { | |
307 return DataLayout::compute_size_in_bytes(cell_count()); | |
308 } | |
309 | |
310 protected: | |
311 // Low-level accessors for underlying data | |
312 void set_intptr_at(int index, intptr_t value) { | |
313 assert(0 <= index && index < cell_count(), "oob"); | |
314 data()->set_cell_at(index, value); | |
315 } | |
316 void release_set_intptr_at(int index, intptr_t value) { | |
317 assert(0 <= index && index < cell_count(), "oob"); | |
318 data()->release_set_cell_at(index, value); | |
319 } | |
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320 intptr_t intptr_at(int index) const { |
0 | 321 assert(0 <= index && index < cell_count(), "oob"); |
322 return data()->cell_at(index); | |
323 } | |
324 void set_uint_at(int index, uint value) { | |
325 set_intptr_at(index, (intptr_t) value); | |
326 } | |
327 void release_set_uint_at(int index, uint value) { | |
328 release_set_intptr_at(index, (intptr_t) value); | |
329 } | |
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330 uint uint_at(int index) const { |
0 | 331 return (uint)intptr_at(index); |
332 } | |
333 void set_int_at(int index, int value) { | |
334 set_intptr_at(index, (intptr_t) value); | |
335 } | |
336 void release_set_int_at(int index, int value) { | |
337 release_set_intptr_at(index, (intptr_t) value); | |
338 } | |
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339 int int_at(int index) const { |
0 | 340 return (int)intptr_at(index); |
341 } | |
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342 int int_at_unchecked(int index) const { |
0 | 343 return (int)data()->cell_at(index); |
344 } | |
345 void set_oop_at(int index, oop value) { | |
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346 set_intptr_at(index, cast_from_oop<intptr_t>(value)); |
0 | 347 } |
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348 oop oop_at(int index) const { |
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349 return cast_to_oop(intptr_at(index)); |
0 | 350 } |
351 | |
352 void set_flag_at(int flag_number) { | |
353 data()->set_flag_at(flag_number); | |
354 } | |
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355 bool flag_at(int flag_number) const { |
0 | 356 return data()->flag_at(flag_number); |
357 } | |
358 | |
359 // two convenient imports for use by subclasses: | |
360 static ByteSize cell_offset(int index) { | |
361 return DataLayout::cell_offset(index); | |
362 } | |
363 static int flag_number_to_byte_constant(int flag_number) { | |
364 return DataLayout::flag_number_to_byte_constant(flag_number); | |
365 } | |
366 | |
367 ProfileData(DataLayout* data) { | |
368 _data = data; | |
369 } | |
370 | |
371 public: | |
372 // Constructor for invalid ProfileData. | |
373 ProfileData(); | |
374 | |
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375 u2 bci() const { |
0 | 376 return data()->bci(); |
377 } | |
378 | |
379 address dp() { | |
380 return (address)_data; | |
381 } | |
382 | |
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383 int trap_state() const { |
0 | 384 return data()->trap_state(); |
385 } | |
386 void set_trap_state(int new_state) { | |
387 data()->set_trap_state(new_state); | |
388 } | |
389 | |
390 // Type checking | |
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391 virtual bool is_BitData() const { return false; } |
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392 virtual bool is_CounterData() const { return false; } |
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393 virtual bool is_JumpData() const { return false; } |
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394 virtual bool is_ReceiverTypeData()const { return false; } |
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395 virtual bool is_VirtualCallData() const { return false; } |
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396 virtual bool is_RetData() const { return false; } |
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397 virtual bool is_BranchData() const { return false; } |
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398 virtual bool is_ArrayData() const { return false; } |
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399 virtual bool is_MultiBranchData() const { return false; } |
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400 virtual bool is_ArgInfoData() const { return false; } |
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401 virtual bool is_CallTypeData() const { return false; } |
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402 virtual bool is_VirtualCallTypeData()const { return false; } |
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403 virtual bool is_ParametersTypeData() const { return false; } |
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404 virtual bool is_SpeculativeTrapData()const { return false; } |
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405 |
0 | 406 |
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407 BitData* as_BitData() const { |
0 | 408 assert(is_BitData(), "wrong type"); |
409 return is_BitData() ? (BitData*) this : NULL; | |
410 } | |
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411 CounterData* as_CounterData() const { |
0 | 412 assert(is_CounterData(), "wrong type"); |
413 return is_CounterData() ? (CounterData*) this : NULL; | |
414 } | |
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415 JumpData* as_JumpData() const { |
0 | 416 assert(is_JumpData(), "wrong type"); |
417 return is_JumpData() ? (JumpData*) this : NULL; | |
418 } | |
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419 ReceiverTypeData* as_ReceiverTypeData() const { |
0 | 420 assert(is_ReceiverTypeData(), "wrong type"); |
421 return is_ReceiverTypeData() ? (ReceiverTypeData*)this : NULL; | |
422 } | |
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423 VirtualCallData* as_VirtualCallData() const { |
0 | 424 assert(is_VirtualCallData(), "wrong type"); |
425 return is_VirtualCallData() ? (VirtualCallData*)this : NULL; | |
426 } | |
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427 RetData* as_RetData() const { |
0 | 428 assert(is_RetData(), "wrong type"); |
429 return is_RetData() ? (RetData*) this : NULL; | |
430 } | |
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431 BranchData* as_BranchData() const { |
0 | 432 assert(is_BranchData(), "wrong type"); |
433 return is_BranchData() ? (BranchData*) this : NULL; | |
434 } | |
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435 ArrayData* as_ArrayData() const { |
0 | 436 assert(is_ArrayData(), "wrong type"); |
437 return is_ArrayData() ? (ArrayData*) this : NULL; | |
438 } | |
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439 MultiBranchData* as_MultiBranchData() const { |
0 | 440 assert(is_MultiBranchData(), "wrong type"); |
441 return is_MultiBranchData() ? (MultiBranchData*)this : NULL; | |
442 } | |
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443 ArgInfoData* as_ArgInfoData() const { |
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444 assert(is_ArgInfoData(), "wrong type"); |
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445 return is_ArgInfoData() ? (ArgInfoData*)this : NULL; |
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446 } |
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447 CallTypeData* as_CallTypeData() const { |
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448 assert(is_CallTypeData(), "wrong type"); |
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449 return is_CallTypeData() ? (CallTypeData*)this : NULL; |
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450 } |
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451 VirtualCallTypeData* as_VirtualCallTypeData() const { |
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452 assert(is_VirtualCallTypeData(), "wrong type"); |
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453 return is_VirtualCallTypeData() ? (VirtualCallTypeData*)this : NULL; |
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454 } |
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455 ParametersTypeData* as_ParametersTypeData() const { |
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456 assert(is_ParametersTypeData(), "wrong type"); |
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457 return is_ParametersTypeData() ? (ParametersTypeData*)this : NULL; |
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458 } |
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459 SpeculativeTrapData* as_SpeculativeTrapData() const { |
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460 assert(is_SpeculativeTrapData(), "wrong type"); |
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461 return is_SpeculativeTrapData() ? (SpeculativeTrapData*)this : NULL; |
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462 } |
0 | 463 |
464 | |
465 // Subclass specific initialization | |
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466 virtual void post_initialize(BytecodeStream* stream, MethodData* mdo) {} |
0 | 467 |
468 // GC support | |
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469 virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure) {} |
0 | 470 |
471 // CI translation: ProfileData can represent both MethodDataOop data | |
472 // as well as CIMethodData data. This function is provided for translating | |
473 // an oop in a ProfileData to the ci equivalent. Generally speaking, | |
474 // most ProfileData don't require any translation, so we provide the null | |
475 // translation here, and the required translators are in the ci subclasses. | |
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476 virtual void translate_from(const ProfileData* data) {} |
0 | 477 |
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478 virtual void print_data_on(outputStream* st, const char* extra = NULL) const { |
0 | 479 ShouldNotReachHere(); |
480 } | |
481 | |
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482 void print_data_on(outputStream* st, const MethodData* md) const; |
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483 |
0 | 484 #ifndef PRODUCT |
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485 void print_shared(outputStream* st, const char* name, const char* extra) const; |
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486 void tab(outputStream* st, bool first = false) const; |
0 | 487 #endif |
488 }; | |
489 | |
490 // BitData | |
491 // | |
492 // A BitData holds a flag or two in its header. | |
493 class BitData : public ProfileData { | |
494 protected: | |
495 enum { | |
496 // null_seen: | |
497 // saw a null operand (cast/aastore/instanceof) | |
498 null_seen_flag = DataLayout::first_flag + 0 | |
499 }; | |
500 enum { bit_cell_count = 0 }; // no additional data fields needed. | |
501 public: | |
502 BitData(DataLayout* layout) : ProfileData(layout) { | |
503 } | |
504 | |
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505 virtual bool is_BitData() const { return true; } |
0 | 506 |
507 static int static_cell_count() { | |
508 return bit_cell_count; | |
509 } | |
510 | |
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511 virtual int cell_count() const { |
0 | 512 return static_cell_count(); |
513 } | |
514 | |
515 // Accessor | |
516 | |
517 // The null_seen flag bit is specially known to the interpreter. | |
518 // Consulting it allows the compiler to avoid setting up null_check traps. | |
519 bool null_seen() { return flag_at(null_seen_flag); } | |
520 void set_null_seen() { set_flag_at(null_seen_flag); } | |
521 | |
522 | |
523 // Code generation support | |
524 static int null_seen_byte_constant() { | |
525 return flag_number_to_byte_constant(null_seen_flag); | |
526 } | |
527 | |
528 static ByteSize bit_data_size() { | |
529 return cell_offset(bit_cell_count); | |
530 } | |
531 | |
532 #ifndef PRODUCT | |
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533 void print_data_on(outputStream* st, const char* extra = NULL) const; |
0 | 534 #endif |
535 }; | |
536 | |
537 // CounterData | |
538 // | |
539 // A CounterData corresponds to a simple counter. | |
540 class CounterData : public BitData { | |
541 protected: | |
542 enum { | |
543 count_off, | |
544 counter_cell_count | |
545 }; | |
546 public: | |
547 CounterData(DataLayout* layout) : BitData(layout) {} | |
548 | |
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549 virtual bool is_CounterData() const { return true; } |
0 | 550 |
551 static int static_cell_count() { | |
552 return counter_cell_count; | |
553 } | |
554 | |
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555 virtual int cell_count() const { |
0 | 556 return static_cell_count(); |
557 } | |
558 | |
559 // Direct accessor | |
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560 uint count() const { |
0 | 561 return uint_at(count_off); |
562 } | |
563 | |
564 // Code generation support | |
565 static ByteSize count_offset() { | |
566 return cell_offset(count_off); | |
567 } | |
568 static ByteSize counter_data_size() { | |
569 return cell_offset(counter_cell_count); | |
570 } | |
571 | |
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572 void set_count(uint count) { |
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573 set_uint_at(count_off, count); |
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574 } |
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575 |
0 | 576 #ifndef PRODUCT |
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577 void print_data_on(outputStream* st, const char* extra = NULL) const; |
0 | 578 #endif |
579 }; | |
580 | |
581 // JumpData | |
582 // | |
583 // A JumpData is used to access profiling information for a direct | |
584 // branch. It is a counter, used for counting the number of branches, | |
585 // plus a data displacement, used for realigning the data pointer to | |
586 // the corresponding target bci. | |
587 class JumpData : public ProfileData { | |
588 protected: | |
589 enum { | |
590 taken_off_set, | |
591 displacement_off_set, | |
592 jump_cell_count | |
593 }; | |
594 | |
595 void set_displacement(int displacement) { | |
596 set_int_at(displacement_off_set, displacement); | |
597 } | |
598 | |
599 public: | |
600 JumpData(DataLayout* layout) : ProfileData(layout) { | |
601 assert(layout->tag() == DataLayout::jump_data_tag || | |
602 layout->tag() == DataLayout::branch_data_tag, "wrong type"); | |
603 } | |
604 | |
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605 virtual bool is_JumpData() const { return true; } |
0 | 606 |
607 static int static_cell_count() { | |
608 return jump_cell_count; | |
609 } | |
610 | |
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611 virtual int cell_count() const { |
0 | 612 return static_cell_count(); |
613 } | |
614 | |
615 // Direct accessor | |
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616 uint taken() const { |
0 | 617 return uint_at(taken_off_set); |
618 } | |
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619 |
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620 void set_taken(uint cnt) { |
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621 set_uint_at(taken_off_set, cnt); |
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622 } |
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623 |
0 | 624 // Saturating counter |
625 uint inc_taken() { | |
626 uint cnt = taken() + 1; | |
627 // Did we wrap? Will compiler screw us?? | |
628 if (cnt == 0) cnt--; | |
629 set_uint_at(taken_off_set, cnt); | |
630 return cnt; | |
631 } | |
632 | |
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633 int displacement() const { |
0 | 634 return int_at(displacement_off_set); |
635 } | |
636 | |
637 // Code generation support | |
638 static ByteSize taken_offset() { | |
639 return cell_offset(taken_off_set); | |
640 } | |
641 | |
642 static ByteSize displacement_offset() { | |
643 return cell_offset(displacement_off_set); | |
644 } | |
645 | |
646 // Specific initialization. | |
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647 void post_initialize(BytecodeStream* stream, MethodData* mdo); |
0 | 648 |
649 #ifndef PRODUCT | |
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650 void print_data_on(outputStream* st, const char* extra = NULL) const; |
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651 #endif |
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652 }; |
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653 |
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654 // Entries in a ProfileData object to record types: it can either be |
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655 // none (no profile), unknown (conflicting profile data) or a klass if |
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656 // a single one is seen. Whether a null reference was seen is also |
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657 // recorded. No counter is associated with the type and a single type |
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658 // is tracked (unlike VirtualCallData). |
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659 class TypeEntries { |
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660 |
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661 public: |
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662 |
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663 // A single cell is used to record information for a type: |
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664 // - the cell is initialized to 0 |
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665 // - when a type is discovered it is stored in the cell |
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666 // - bit zero of the cell is used to record whether a null reference |
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667 // was encountered or not |
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668 // - bit 1 is set to record a conflict in the type information |
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669 |
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670 enum { |
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671 null_seen = 1, |
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672 type_mask = ~null_seen, |
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673 type_unknown = 2, |
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674 status_bits = null_seen | type_unknown, |
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675 type_klass_mask = ~status_bits |
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676 }; |
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677 |
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678 // what to initialize a cell to |
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679 static intptr_t type_none() { |
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680 return 0; |
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681 } |
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682 |
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683 // null seen = bit 0 set? |
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684 static bool was_null_seen(intptr_t v) { |
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685 return (v & null_seen) != 0; |
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686 } |
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687 |
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688 // conflicting type information = bit 1 set? |
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689 static bool is_type_unknown(intptr_t v) { |
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690 return (v & type_unknown) != 0; |
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|
691 } |
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|
692 |
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693 // not type information yet = all bits cleared, ignoring bit 0? |
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694 static bool is_type_none(intptr_t v) { |
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695 return (v & type_mask) == 0; |
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|
696 } |
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|
697 |
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698 // recorded type: cell without bit 0 and 1 |
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699 static intptr_t klass_part(intptr_t v) { |
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700 intptr_t r = v & type_klass_mask; |
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701 return r; |
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|
702 } |
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|
703 |
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704 // type recorded |
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705 static Klass* valid_klass(intptr_t k) { |
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706 if (!is_type_none(k) && |
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707 !is_type_unknown(k)) { |
13080 | 708 Klass* res = (Klass*)klass_part(k); |
709 assert(res != NULL, "invalid"); | |
710 return res; | |
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711 } else { |
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712 return NULL; |
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|
713 } |
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|
714 } |
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|
715 |
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716 static intptr_t with_status(intptr_t k, intptr_t in) { |
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717 return k | (in & status_bits); |
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|
718 } |
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|
719 |
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720 static intptr_t with_status(Klass* k, intptr_t in) { |
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721 return with_status((intptr_t)k, in); |
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722 } |
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|
723 |
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|
724 #ifndef PRODUCT |
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725 static void print_klass(outputStream* st, intptr_t k); |
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726 #endif |
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727 |
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|
728 // GC support |
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729 static bool is_loader_alive(BoolObjectClosure* is_alive_cl, intptr_t p); |
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|
730 |
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|
731 protected: |
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732 // ProfileData object these entries are part of |
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733 ProfileData* _pd; |
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734 // offset within the ProfileData object where the entries start |
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|
735 const int _base_off; |
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|
736 |
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|
737 TypeEntries(int base_off) |
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738 : _base_off(base_off), _pd(NULL) {} |
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|
739 |
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740 void set_intptr_at(int index, intptr_t value) { |
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741 _pd->set_intptr_at(index, value); |
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|
742 } |
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|
743 |
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|
744 intptr_t intptr_at(int index) const { |
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|
745 return _pd->intptr_at(index); |
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|
746 } |
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|
747 |
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|
748 public: |
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|
749 void set_profile_data(ProfileData* pd) { |
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|
750 _pd = pd; |
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|
751 } |
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|
752 }; |
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|
753 |
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|
754 // Type entries used for arguments passed at a call and parameters on |
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|
755 // method entry. 2 cells per entry: one for the type encoded as in |
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|
756 // TypeEntries and one initialized with the stack slot where the |
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|
757 // profiled object is to be found so that the interpreter can locate |
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|
758 // it quickly. |
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|
759 class TypeStackSlotEntries : public TypeEntries { |
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|
760 |
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|
761 private: |
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|
762 enum { |
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|
763 stack_slot_entry, |
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|
764 type_entry, |
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|
765 per_arg_cell_count |
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|
766 }; |
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|
767 |
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|
768 // offset of cell for stack slot for entry i within ProfileData object |
12882
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769 int stack_slot_offset(int i) const { |
12875
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770 return _base_off + stack_slot_local_offset(i); |
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|
771 } |
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|
772 |
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|
773 protected: |
12882
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|
774 const int _number_of_entries; |
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|
775 |
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|
776 // offset of cell for type for entry i within ProfileData object |
12882
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777 int type_offset(int i) const { |
12875
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778 return _base_off + type_local_offset(i); |
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|
779 } |
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|
780 |
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|
781 public: |
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|
782 |
12882
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|
783 TypeStackSlotEntries(int base_off, int nb_entries) |
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784 : TypeEntries(base_off), _number_of_entries(nb_entries) {} |
12875
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|
785 |
12962
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|
786 static int compute_cell_count(Symbol* signature, bool include_receiver, int max); |
12875
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|
787 |
12962
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|
788 void post_initialize(Symbol* signature, bool has_receiver, bool include_receiver); |
12875
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|
789 |
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|
790 // offset of cell for stack slot for entry i within this block of cells for a TypeStackSlotEntries |
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|
791 static int stack_slot_local_offset(int i) { |
12882
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792 return i * per_arg_cell_count + stack_slot_entry; |
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|
793 } |
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|
794 |
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|
795 // offset of cell for type for entry i within this block of cells for a TypeStackSlotEntries |
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|
796 static int type_local_offset(int i) { |
12882
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|
797 return i * per_arg_cell_count + type_entry; |
12875
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|
798 } |
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|
799 |
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|
800 // stack slot for entry i |
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|
801 uint stack_slot(int i) const { |
12882
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|
802 assert(i >= 0 && i < _number_of_entries, "oob"); |
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803 return _pd->uint_at(stack_slot_offset(i)); |
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|
804 } |
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|
805 |
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|
806 // set stack slot for entry i |
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|
807 void set_stack_slot(int i, uint num) { |
12882
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|
808 assert(i >= 0 && i < _number_of_entries, "oob"); |
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|
809 _pd->set_uint_at(stack_slot_offset(i), num); |
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|
810 } |
d13d7aba8c12
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|
811 |
d13d7aba8c12
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|
812 // type for entry i |
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|
813 intptr_t type(int i) const { |
12882
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|
814 assert(i >= 0 && i < _number_of_entries, "oob"); |
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|
815 return _pd->intptr_at(type_offset(i)); |
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|
816 } |
d13d7aba8c12
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|
817 |
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|
818 // set type for entry i |
d13d7aba8c12
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|
819 void set_type(int i, intptr_t k) { |
12882
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|
820 assert(i >= 0 && i < _number_of_entries, "oob"); |
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|
821 _pd->set_intptr_at(type_offset(i), k); |
12875
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|
822 } |
d13d7aba8c12
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|
823 |
d13d7aba8c12
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|
824 static ByteSize per_arg_size() { |
d13d7aba8c12
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|
825 return in_ByteSize(per_arg_cell_count * DataLayout::cell_size); |
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826 } |
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827 |
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828 static int per_arg_count() { |
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829 return per_arg_cell_count ; |
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830 } |
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831 |
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832 // GC support |
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833 void clean_weak_klass_links(BoolObjectClosure* is_alive_closure); |
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834 |
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835 #ifndef PRODUCT |
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836 void print_data_on(outputStream* st) const; |
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837 #endif |
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838 }; |
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839 |
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840 // Type entry used for return from a call. A single cell to record the |
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841 // type. |
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842 class ReturnTypeEntry : public TypeEntries { |
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843 |
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844 private: |
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845 enum { |
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846 cell_count = 1 |
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847 }; |
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848 |
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849 public: |
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850 ReturnTypeEntry(int base_off) |
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851 : TypeEntries(base_off) {} |
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852 |
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853 void post_initialize() { |
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854 set_type(type_none()); |
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855 } |
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856 |
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857 intptr_t type() const { |
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858 return _pd->intptr_at(_base_off); |
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859 } |
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860 |
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861 void set_type(intptr_t k) { |
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862 _pd->set_intptr_at(_base_off, k); |
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863 } |
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864 |
12882
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865 static int static_cell_count() { |
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866 return cell_count; |
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867 } |
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868 |
12882
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869 static ByteSize size() { |
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870 return in_ByteSize(cell_count * DataLayout::cell_size); |
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871 } |
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|
872 |
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873 ByteSize type_offset() { |
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874 return DataLayout::cell_offset(_base_off); |
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875 } |
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|
876 |
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877 // GC support |
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878 void clean_weak_klass_links(BoolObjectClosure* is_alive_closure); |
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879 |
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|
880 #ifndef PRODUCT |
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881 void print_data_on(outputStream* st) const; |
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882 #endif |
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883 }; |
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|
884 |
12882
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885 // Entries to collect type information at a call: contains arguments |
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886 // (TypeStackSlotEntries), a return type (ReturnTypeEntry) and a |
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887 // number of cells. Because the number of cells for the return type is |
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888 // smaller than the number of cells for the type of an arguments, the |
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889 // number of cells is used to tell how many arguments are profiled and |
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890 // whether a return value is profiled. See has_arguments() and |
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891 // has_return(). |
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892 class TypeEntriesAtCall { |
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|
893 private: |
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894 static int stack_slot_local_offset(int i) { |
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895 return header_cell_count() + TypeStackSlotEntries::stack_slot_local_offset(i); |
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896 } |
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|
897 |
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898 static int argument_type_local_offset(int i) { |
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899 return header_cell_count() + TypeStackSlotEntries::type_local_offset(i);; |
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900 } |
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|
901 |
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|
902 public: |
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|
903 |
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|
904 static int header_cell_count() { |
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905 return 1; |
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|
906 } |
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|
907 |
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908 static int cell_count_local_offset() { |
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909 return 0; |
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|
910 } |
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|
911 |
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912 static int compute_cell_count(BytecodeStream* stream); |
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913 |
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914 static void initialize(DataLayout* dl, int base, int cell_count) { |
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915 int off = base + cell_count_local_offset(); |
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916 dl->set_cell_at(off, cell_count - base - header_cell_count()); |
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917 } |
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918 |
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919 static bool arguments_profiling_enabled(); |
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920 static bool return_profiling_enabled(); |
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921 |
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922 // Code generation support |
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923 static ByteSize cell_count_offset() { |
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924 return in_ByteSize(cell_count_local_offset() * DataLayout::cell_size); |
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925 } |
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926 |
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927 static ByteSize args_data_offset() { |
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928 return in_ByteSize(header_cell_count() * DataLayout::cell_size); |
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929 } |
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|
930 |
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931 static ByteSize stack_slot_offset(int i) { |
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932 return in_ByteSize(stack_slot_local_offset(i) * DataLayout::cell_size); |
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933 } |
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|
934 |
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935 static ByteSize argument_type_offset(int i) { |
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936 return in_ByteSize(argument_type_local_offset(i) * DataLayout::cell_size); |
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937 } |
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|
938 }; |
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|
939 |
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940 // CallTypeData |
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941 // |
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942 // A CallTypeData is used to access profiling information about a non |
12882
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943 // virtual call for which we collect type information about arguments |
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944 // and return value. |
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945 class CallTypeData : public CounterData { |
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|
946 private: |
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947 // entries for arguments if any |
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948 TypeStackSlotEntries _args; |
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949 // entry for return type if any |
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950 ReturnTypeEntry _ret; |
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|
951 |
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952 int cell_count_global_offset() const { |
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953 return CounterData::static_cell_count() + TypeEntriesAtCall::cell_count_local_offset(); |
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|
954 } |
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|
955 |
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956 // number of cells not counting the header |
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957 int cell_count_no_header() const { |
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958 return uint_at(cell_count_global_offset()); |
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959 } |
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|
960 |
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961 void check_number_of_arguments(int total) { |
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962 assert(number_of_arguments() == total, "should be set in DataLayout::initialize"); |
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963 } |
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964 |
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965 public: |
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966 CallTypeData(DataLayout* layout) : |
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967 CounterData(layout), |
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968 _args(CounterData::static_cell_count()+TypeEntriesAtCall::header_cell_count(), number_of_arguments()), |
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969 _ret(cell_count() - ReturnTypeEntry::static_cell_count()) |
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970 { |
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971 assert(layout->tag() == DataLayout::call_type_data_tag, "wrong type"); |
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972 // Some compilers (VC++) don't want this passed in member initialization list |
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973 _args.set_profile_data(this); |
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974 _ret.set_profile_data(this); |
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975 } |
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976 |
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977 const TypeStackSlotEntries* args() const { |
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978 assert(has_arguments(), "no profiling of arguments"); |
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979 return &_args; |
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980 } |
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981 |
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982 const ReturnTypeEntry* ret() const { |
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983 assert(has_return(), "no profiling of return value"); |
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984 return &_ret; |
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985 } |
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986 |
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987 virtual bool is_CallTypeData() const { return true; } |
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988 |
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989 static int static_cell_count() { |
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990 return -1; |
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991 } |
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992 |
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993 static int compute_cell_count(BytecodeStream* stream) { |
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994 return CounterData::static_cell_count() + TypeEntriesAtCall::compute_cell_count(stream); |
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995 } |
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996 |
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997 static void initialize(DataLayout* dl, int cell_count) { |
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998 TypeEntriesAtCall::initialize(dl, CounterData::static_cell_count(), cell_count); |
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999 } |
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1000 |
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1001 virtual void post_initialize(BytecodeStream* stream, MethodData* mdo); |
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1002 |
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1003 virtual int cell_count() const { |
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1004 return CounterData::static_cell_count() + |
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1005 TypeEntriesAtCall::header_cell_count() + |
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1006 int_at_unchecked(cell_count_global_offset()); |
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1007 } |
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1008 |
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1009 int number_of_arguments() const { |
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1010 return cell_count_no_header() / TypeStackSlotEntries::per_arg_count(); |
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1011 } |
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1012 |
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1013 void set_argument_type(int i, Klass* k) { |
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1014 assert(has_arguments(), "no arguments!"); |
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1015 intptr_t current = _args.type(i); |
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1016 _args.set_type(i, TypeEntries::with_status(k, current)); |
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1017 } |
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1018 |
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1019 void set_return_type(Klass* k) { |
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1020 assert(has_return(), "no return!"); |
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1021 intptr_t current = _ret.type(); |
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1022 _ret.set_type(TypeEntries::with_status(k, current)); |
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1023 } |
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1024 |
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1025 // An entry for a return value takes less space than an entry for an |
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1026 // argument so if the number of cells exceeds the number of cells |
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1027 // needed for an argument, this object contains type information for |
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1028 // at least one argument. |
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1029 bool has_arguments() const { |
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1030 bool res = cell_count_no_header() >= TypeStackSlotEntries::per_arg_count(); |
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1031 assert (!res || TypeEntriesAtCall::arguments_profiling_enabled(), "no profiling of arguments"); |
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1032 return res; |
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1033 } |
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1034 |
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1035 // An entry for a return value takes less space than an entry for an |
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1036 // argument, so if the remainder of the number of cells divided by |
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1037 // the number of cells for an argument is not null, a return value |
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1038 // is profiled in this object. |
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1039 bool has_return() const { |
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1040 bool res = (cell_count_no_header() % TypeStackSlotEntries::per_arg_count()) != 0; |
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1041 assert (!res || TypeEntriesAtCall::return_profiling_enabled(), "no profiling of return values"); |
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1042 return res; |
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1043 } |
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1044 |
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1045 // Code generation support |
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1046 static ByteSize args_data_offset() { |
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1047 return cell_offset(CounterData::static_cell_count()) + TypeEntriesAtCall::args_data_offset(); |
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1048 } |
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1049 |
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1050 // GC support |
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1051 virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure) { |
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1052 if (has_arguments()) { |
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1053 _args.clean_weak_klass_links(is_alive_closure); |
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1054 } |
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1055 if (has_return()) { |
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1056 _ret.clean_weak_klass_links(is_alive_closure); |
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1057 } |
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1058 } |
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1059 |
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1060 #ifndef PRODUCT |
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1061 virtual void print_data_on(outputStream* st, const char* extra = NULL) const; |
0 | 1062 #endif |
1063 }; | |
1064 | |
1065 // ReceiverTypeData | |
1066 // | |
1067 // A ReceiverTypeData is used to access profiling information about a | |
1068 // dynamic type check. It consists of a counter which counts the total times | |
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1069 // that the check is reached, and a series of (Klass*, count) pairs |
0 | 1070 // which are used to store a type profile for the receiver of the check. |
1071 class ReceiverTypeData : public CounterData { | |
1072 protected: | |
1073 enum { | |
1074 receiver0_offset = counter_cell_count, | |
1075 count0_offset, | |
1076 receiver_type_row_cell_count = (count0_offset + 1) - receiver0_offset | |
1077 }; | |
1078 | |
1079 public: | |
1080 ReceiverTypeData(DataLayout* layout) : CounterData(layout) { | |
1081 assert(layout->tag() == DataLayout::receiver_type_data_tag || | |
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1082 layout->tag() == DataLayout::virtual_call_data_tag || |
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1083 layout->tag() == DataLayout::virtual_call_type_data_tag, "wrong type"); |
0 | 1084 } |
1085 | |
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1086 virtual bool is_ReceiverTypeData() const { return true; } |
0 | 1087 |
1088 static int static_cell_count() { | |
1089 return counter_cell_count + (uint) TypeProfileWidth * receiver_type_row_cell_count; | |
1090 } | |
1091 | |
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1092 virtual int cell_count() const { |
0 | 1093 return static_cell_count(); |
1094 } | |
1095 | |
1096 // Direct accessors | |
1097 static uint row_limit() { | |
1098 return TypeProfileWidth; | |
1099 } | |
1100 static int receiver_cell_index(uint row) { | |
1101 return receiver0_offset + row * receiver_type_row_cell_count; | |
1102 } | |
1103 static int receiver_count_cell_index(uint row) { | |
1104 return count0_offset + row * receiver_type_row_cell_count; | |
1105 } | |
1106 | |
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1107 Klass* receiver(uint row) const { |
0 | 1108 assert(row < row_limit(), "oob"); |
1109 | |
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1110 Klass* recv = (Klass*)intptr_at(receiver_cell_index(row)); |
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1111 assert(recv == NULL || recv->is_klass(), "wrong type"); |
0 | 1112 return recv; |
1113 } | |
1114 | |
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1115 void set_receiver(uint row, Klass* k) { |
941 | 1116 assert((uint)row < row_limit(), "oob"); |
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1117 set_intptr_at(receiver_cell_index(row), (uintptr_t)k); |
941 | 1118 } |
1119 | |
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1120 uint receiver_count(uint row) const { |
0 | 1121 assert(row < row_limit(), "oob"); |
1122 return uint_at(receiver_count_cell_index(row)); | |
1123 } | |
1124 | |
941 | 1125 void set_receiver_count(uint row, uint count) { |
1126 assert(row < row_limit(), "oob"); | |
1127 set_uint_at(receiver_count_cell_index(row), count); | |
1128 } | |
1129 | |
1130 void clear_row(uint row) { | |
1131 assert(row < row_limit(), "oob"); | |
1251
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1132 // Clear total count - indicator of polymorphic call site. |
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1133 // The site may look like as monomorphic after that but |
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1134 // it allow to have more accurate profiling information because |
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1135 // there was execution phase change since klasses were unloaded. |
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1136 // If the site is still polymorphic then MDO will be updated |
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1137 // to reflect it. But it could be the case that the site becomes |
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1138 // only bimorphic. Then keeping total count not 0 will be wrong. |
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1139 // Even if we use monomorphic (when it is not) for compilation |
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1140 // we will only have trap, deoptimization and recompile again |
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1141 // with updated MDO after executing method in Interpreter. |
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1142 // An additional receiver will be recorded in the cleaned row |
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1143 // during next call execution. |
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1144 // |
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1145 // Note: our profiling logic works with empty rows in any slot. |
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1146 // We do sorting a profiling info (ciCallProfile) for compilation. |
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1147 // |
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1148 set_count(0); |
941 | 1149 set_receiver(row, NULL); |
1150 set_receiver_count(row, 0); | |
1151 } | |
1152 | |
0 | 1153 // Code generation support |
1154 static ByteSize receiver_offset(uint row) { | |
1155 return cell_offset(receiver_cell_index(row)); | |
1156 } | |
1157 static ByteSize receiver_count_offset(uint row) { | |
1158 return cell_offset(receiver_count_cell_index(row)); | |
1159 } | |
1160 static ByteSize receiver_type_data_size() { | |
1161 return cell_offset(static_cell_count()); | |
1162 } | |
1163 | |
1164 // GC support | |
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1165 virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure); |
0 | 1166 |
1167 #ifndef PRODUCT | |
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1168 void print_receiver_data_on(outputStream* st) const; |
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1169 void print_data_on(outputStream* st, const char* extra = NULL) const; |
0 | 1170 #endif |
1171 }; | |
1172 | |
1173 // VirtualCallData | |
1174 // | |
1175 // A VirtualCallData is used to access profiling information about a | |
1176 // virtual call. For now, it has nothing more than a ReceiverTypeData. | |
1177 class VirtualCallData : public ReceiverTypeData { | |
1178 public: | |
1179 VirtualCallData(DataLayout* layout) : ReceiverTypeData(layout) { | |
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1180 assert(layout->tag() == DataLayout::virtual_call_data_tag || |
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1181 layout->tag() == DataLayout::virtual_call_type_data_tag, "wrong type"); |
0 | 1182 } |
1183 | |
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1184 virtual bool is_VirtualCallData() const { return true; } |
0 | 1185 |
1186 static int static_cell_count() { | |
1187 // At this point we could add more profile state, e.g., for arguments. | |
1188 // But for now it's the same size as the base record type. | |
1189 return ReceiverTypeData::static_cell_count(); | |
1190 } | |
1191 | |
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1192 virtual int cell_count() const { |
0 | 1193 return static_cell_count(); |
1194 } | |
1195 | |
1196 // Direct accessors | |
1197 static ByteSize virtual_call_data_size() { | |
1198 return cell_offset(static_cell_count()); | |
1199 } | |
1200 | |
1201 #ifndef PRODUCT | |
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1202 void print_data_on(outputStream* st, const char* extra = NULL) const; |
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1203 #endif |
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1204 }; |
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1205 |
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1206 // VirtualCallTypeData |
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1207 // |
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1208 // A VirtualCallTypeData is used to access profiling information about |
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1209 // a virtual call for which we collect type information about |
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1210 // arguments and return value. |
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1211 class VirtualCallTypeData : public VirtualCallData { |
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1212 private: |
12882
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1213 // entries for arguments if any |
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1214 TypeStackSlotEntries _args; |
12882
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1215 // entry for return type if any |
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1216 ReturnTypeEntry _ret; |
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1217 |
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1218 int cell_count_global_offset() const { |
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1219 return VirtualCallData::static_cell_count() + TypeEntriesAtCall::cell_count_local_offset(); |
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1220 } |
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1221 |
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1222 // number of cells not counting the header |
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1223 int cell_count_no_header() const { |
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1224 return uint_at(cell_count_global_offset()); |
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1225 } |
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1226 |
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1227 void check_number_of_arguments(int total) { |
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1228 assert(number_of_arguments() == total, "should be set in DataLayout::initialize"); |
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1229 } |
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1230 |
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1231 public: |
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1232 VirtualCallTypeData(DataLayout* layout) : |
12882
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1233 VirtualCallData(layout), |
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1234 _args(VirtualCallData::static_cell_count()+TypeEntriesAtCall::header_cell_count(), number_of_arguments()), |
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1235 _ret(cell_count() - ReturnTypeEntry::static_cell_count()) |
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1236 { |
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1237 assert(layout->tag() == DataLayout::virtual_call_type_data_tag, "wrong type"); |
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1238 // Some compilers (VC++) don't want this passed in member initialization list |
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1239 _args.set_profile_data(this); |
12882
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1240 _ret.set_profile_data(this); |
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1241 } |
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1242 |
12882
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1243 const TypeStackSlotEntries* args() const { |
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1244 assert(has_arguments(), "no profiling of arguments"); |
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1245 return &_args; |
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1246 } |
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1247 |
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1248 const ReturnTypeEntry* ret() const { |
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1249 assert(has_return(), "no profiling of return value"); |
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1250 return &_ret; |
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1251 } |
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1252 |
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1253 virtual bool is_VirtualCallTypeData() const { return true; } |
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1254 |
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1255 static int static_cell_count() { |
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1256 return -1; |
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1257 } |
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1258 |
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1259 static int compute_cell_count(BytecodeStream* stream) { |
12882
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1260 return VirtualCallData::static_cell_count() + TypeEntriesAtCall::compute_cell_count(stream); |
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1261 } |
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1262 |
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1263 static void initialize(DataLayout* dl, int cell_count) { |
12882
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1264 TypeEntriesAtCall::initialize(dl, VirtualCallData::static_cell_count(), cell_count); |
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1265 } |
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1266 |
12882
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1267 virtual void post_initialize(BytecodeStream* stream, MethodData* mdo); |
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1268 |
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1269 virtual int cell_count() const { |
12882
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1270 return VirtualCallData::static_cell_count() + |
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1271 TypeEntriesAtCall::header_cell_count() + |
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1272 int_at_unchecked(cell_count_global_offset()); |
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1273 } |
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1274 |
12882
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1275 int number_of_arguments() const { |
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1276 return cell_count_no_header() / TypeStackSlotEntries::per_arg_count(); |
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1277 } |
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|
1278 |
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1279 void set_argument_type(int i, Klass* k) { |
12882
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1280 assert(has_arguments(), "no arguments!"); |
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1281 intptr_t current = _args.type(i); |
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1282 _args.set_type(i, TypeEntries::with_status(k, current)); |
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1283 } |
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1284 |
12882
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1285 void set_return_type(Klass* k) { |
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1286 assert(has_return(), "no return!"); |
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1287 intptr_t current = _ret.type(); |
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1288 _ret.set_type(TypeEntries::with_status(k, current)); |
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1289 } |
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1290 |
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1291 // An entry for a return value takes less space than an entry for an |
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1292 // argument, so if the remainder of the number of cells divided by |
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1293 // the number of cells for an argument is not null, a return value |
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1294 // is profiled in this object. |
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1295 bool has_return() const { |
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1296 bool res = (cell_count_no_header() % TypeStackSlotEntries::per_arg_count()) != 0; |
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1297 assert (!res || TypeEntriesAtCall::return_profiling_enabled(), "no profiling of return values"); |
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1298 return res; |
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1299 } |
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|
1300 |
12962
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1301 // An entry for a return value takes less space than an entry for an |
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1302 // argument so if the number of cells exceeds the number of cells |
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1303 // needed for an argument, this object contains type information for |
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1304 // at least one argument. |
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1305 bool has_arguments() const { |
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1306 bool res = cell_count_no_header() >= TypeStackSlotEntries::per_arg_count(); |
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1307 assert (!res || TypeEntriesAtCall::arguments_profiling_enabled(), "no profiling of arguments"); |
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1308 return res; |
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1309 } |
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1310 |
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1311 // Code generation support |
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1312 static ByteSize args_data_offset() { |
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1313 return cell_offset(VirtualCallData::static_cell_count()) + TypeEntriesAtCall::args_data_offset(); |
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1314 } |
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1315 |
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1316 // GC support |
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1317 virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure) { |
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1318 ReceiverTypeData::clean_weak_klass_links(is_alive_closure); |
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1319 if (has_arguments()) { |
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1320 _args.clean_weak_klass_links(is_alive_closure); |
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1321 } |
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1322 if (has_return()) { |
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1323 _ret.clean_weak_klass_links(is_alive_closure); |
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1324 } |
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1325 } |
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1326 |
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1327 #ifndef PRODUCT |
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1328 virtual void print_data_on(outputStream* st, const char* extra = NULL) const; |
0 | 1329 #endif |
1330 }; | |
1331 | |
1332 // RetData | |
1333 // | |
1334 // A RetData is used to access profiling information for a ret bytecode. | |
1335 // It is composed of a count of the number of times that the ret has | |
1336 // been executed, followed by a series of triples of the form | |
1337 // (bci, count, di) which count the number of times that some bci was the | |
1338 // target of the ret and cache a corresponding data displacement. | |
1339 class RetData : public CounterData { | |
1340 protected: | |
1341 enum { | |
1342 bci0_offset = counter_cell_count, | |
1343 count0_offset, | |
1344 displacement0_offset, | |
1345 ret_row_cell_count = (displacement0_offset + 1) - bci0_offset | |
1346 }; | |
1347 | |
1348 void set_bci(uint row, int bci) { | |
1349 assert((uint)row < row_limit(), "oob"); | |
1350 set_int_at(bci0_offset + row * ret_row_cell_count, bci); | |
1351 } | |
1352 void release_set_bci(uint row, int bci) { | |
1353 assert((uint)row < row_limit(), "oob"); | |
1354 // 'release' when setting the bci acts as a valid flag for other | |
1355 // threads wrt bci_count and bci_displacement. | |
1356 release_set_int_at(bci0_offset + row * ret_row_cell_count, bci); | |
1357 } | |
1358 void set_bci_count(uint row, uint count) { | |
1359 assert((uint)row < row_limit(), "oob"); | |
1360 set_uint_at(count0_offset + row * ret_row_cell_count, count); | |
1361 } | |
1362 void set_bci_displacement(uint row, int disp) { | |
1363 set_int_at(displacement0_offset + row * ret_row_cell_count, disp); | |
1364 } | |
1365 | |
1366 public: | |
1367 RetData(DataLayout* layout) : CounterData(layout) { | |
1368 assert(layout->tag() == DataLayout::ret_data_tag, "wrong type"); | |
1369 } | |
1370 | |
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1371 virtual bool is_RetData() const { return true; } |
0 | 1372 |
1373 enum { | |
1374 no_bci = -1 // value of bci when bci1/2 are not in use. | |
1375 }; | |
1376 | |
1377 static int static_cell_count() { | |
1378 return counter_cell_count + (uint) BciProfileWidth * ret_row_cell_count; | |
1379 } | |
1380 | |
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1381 virtual int cell_count() const { |
0 | 1382 return static_cell_count(); |
1383 } | |
1384 | |
1385 static uint row_limit() { | |
1386 return BciProfileWidth; | |
1387 } | |
1388 static int bci_cell_index(uint row) { | |
1389 return bci0_offset + row * ret_row_cell_count; | |
1390 } | |
1391 static int bci_count_cell_index(uint row) { | |
1392 return count0_offset + row * ret_row_cell_count; | |
1393 } | |
1394 static int bci_displacement_cell_index(uint row) { | |
1395 return displacement0_offset + row * ret_row_cell_count; | |
1396 } | |
1397 | |
1398 // Direct accessors | |
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1399 int bci(uint row) const { |
0 | 1400 return int_at(bci_cell_index(row)); |
1401 } | |
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1402 uint bci_count(uint row) const { |
0 | 1403 return uint_at(bci_count_cell_index(row)); |
1404 } | |
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1405 int bci_displacement(uint row) const { |
0 | 1406 return int_at(bci_displacement_cell_index(row)); |
1407 } | |
1408 | |
1409 // Interpreter Runtime support | |
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1410 address fixup_ret(int return_bci, MethodData* mdo); |
0 | 1411 |
1412 // Code generation support | |
1413 static ByteSize bci_offset(uint row) { | |
1414 return cell_offset(bci_cell_index(row)); | |
1415 } | |
1416 static ByteSize bci_count_offset(uint row) { | |
1417 return cell_offset(bci_count_cell_index(row)); | |
1418 } | |
1419 static ByteSize bci_displacement_offset(uint row) { | |
1420 return cell_offset(bci_displacement_cell_index(row)); | |
1421 } | |
1422 | |
1423 // Specific initialization. | |
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1424 void post_initialize(BytecodeStream* stream, MethodData* mdo); |
0 | 1425 |
1426 #ifndef PRODUCT | |
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1427 void print_data_on(outputStream* st, const char* extra = NULL) const; |
0 | 1428 #endif |
1429 }; | |
1430 | |
1431 // BranchData | |
1432 // | |
1433 // A BranchData is used to access profiling data for a two-way branch. | |
1434 // It consists of taken and not_taken counts as well as a data displacement | |
1435 // for the taken case. | |
1436 class BranchData : public JumpData { | |
1437 protected: | |
1438 enum { | |
1439 not_taken_off_set = jump_cell_count, | |
1440 branch_cell_count | |
1441 }; | |
1442 | |
1443 void set_displacement(int displacement) { | |
1444 set_int_at(displacement_off_set, displacement); | |
1445 } | |
1446 | |
1447 public: | |
1448 BranchData(DataLayout* layout) : JumpData(layout) { | |
1449 assert(layout->tag() == DataLayout::branch_data_tag, "wrong type"); | |
1450 } | |
1451 | |
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1452 virtual bool is_BranchData() const { return true; } |
0 | 1453 |
1454 static int static_cell_count() { | |
1455 return branch_cell_count; | |
1456 } | |
1457 | |
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1458 virtual int cell_count() const { |
0 | 1459 return static_cell_count(); |
1460 } | |
1461 | |
1462 // Direct accessor | |
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1463 uint not_taken() const { |
0 | 1464 return uint_at(not_taken_off_set); |
1465 } | |
1466 | |
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1467 void set_not_taken(uint cnt) { |
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1468 set_uint_at(not_taken_off_set, cnt); |
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1469 } |
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1470 |
0 | 1471 uint inc_not_taken() { |
1472 uint cnt = not_taken() + 1; | |
1473 // Did we wrap? Will compiler screw us?? | |
1474 if (cnt == 0) cnt--; | |
1475 set_uint_at(not_taken_off_set, cnt); | |
1476 return cnt; | |
1477 } | |
1478 | |
1479 // Code generation support | |
1480 static ByteSize not_taken_offset() { | |
1481 return cell_offset(not_taken_off_set); | |
1482 } | |
1483 static ByteSize branch_data_size() { | |
1484 return cell_offset(branch_cell_count); | |
1485 } | |
1486 | |
1487 // Specific initialization. | |
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1488 void post_initialize(BytecodeStream* stream, MethodData* mdo); |
0 | 1489 |
1490 #ifndef PRODUCT | |
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1491 void print_data_on(outputStream* st, const char* extra = NULL) const; |
0 | 1492 #endif |
1493 }; | |
1494 | |
1495 // ArrayData | |
1496 // | |
1497 // A ArrayData is a base class for accessing profiling data which does | |
1498 // not have a statically known size. It consists of an array length | |
1499 // and an array start. | |
1500 class ArrayData : public ProfileData { | |
1501 protected: | |
1502 friend class DataLayout; | |
1503 | |
1504 enum { | |
1505 array_len_off_set, | |
1506 array_start_off_set | |
1507 }; | |
1508 | |
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1509 uint array_uint_at(int index) const { |
0 | 1510 int aindex = index + array_start_off_set; |
1511 return uint_at(aindex); | |
1512 } | |
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1513 int array_int_at(int index) const { |
0 | 1514 int aindex = index + array_start_off_set; |
1515 return int_at(aindex); | |
1516 } | |
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1517 oop array_oop_at(int index) const { |
0 | 1518 int aindex = index + array_start_off_set; |
1519 return oop_at(aindex); | |
1520 } | |
1521 void array_set_int_at(int index, int value) { | |
1522 int aindex = index + array_start_off_set; | |
1523 set_int_at(aindex, value); | |
1524 } | |
1525 | |
1526 // Code generation support for subclasses. | |
1527 static ByteSize array_element_offset(int index) { | |
1528 return cell_offset(array_start_off_set + index); | |
1529 } | |
1530 | |
1531 public: | |
1532 ArrayData(DataLayout* layout) : ProfileData(layout) {} | |
1533 | |
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1534 virtual bool is_ArrayData() const { return true; } |
0 | 1535 |
1536 static int static_cell_count() { | |
1537 return -1; | |
1538 } | |
1539 | |
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1540 int array_len() const { |
0 | 1541 return int_at_unchecked(array_len_off_set); |
1542 } | |
1543 | |
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1544 virtual int cell_count() const { |
0 | 1545 return array_len() + 1; |
1546 } | |
1547 | |
1548 // Code generation support | |
1549 static ByteSize array_len_offset() { | |
1550 return cell_offset(array_len_off_set); | |
1551 } | |
1552 static ByteSize array_start_offset() { | |
1553 return cell_offset(array_start_off_set); | |
1554 } | |
1555 }; | |
1556 | |
1557 // MultiBranchData | |
1558 // | |
1559 // A MultiBranchData is used to access profiling information for | |
1560 // a multi-way branch (*switch bytecodes). It consists of a series | |
1561 // of (count, displacement) pairs, which count the number of times each | |
1562 // case was taken and specify the data displacment for each branch target. | |
1563 class MultiBranchData : public ArrayData { | |
1564 protected: | |
1565 enum { | |
1566 default_count_off_set, | |
1567 default_disaplacement_off_set, | |
1568 case_array_start | |
1569 }; | |
1570 enum { | |
1571 relative_count_off_set, | |
1572 relative_displacement_off_set, | |
1573 per_case_cell_count | |
1574 }; | |
1575 | |
1576 void set_default_displacement(int displacement) { | |
1577 array_set_int_at(default_disaplacement_off_set, displacement); | |
1578 } | |
1579 void set_displacement_at(int index, int displacement) { | |
1580 array_set_int_at(case_array_start + | |
1581 index * per_case_cell_count + | |
1582 relative_displacement_off_set, | |
1583 displacement); | |
1584 } | |
1585 | |
1586 public: | |
1587 MultiBranchData(DataLayout* layout) : ArrayData(layout) { | |
1588 assert(layout->tag() == DataLayout::multi_branch_data_tag, "wrong type"); | |
1589 } | |
1590 | |
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1591 virtual bool is_MultiBranchData() const { return true; } |
0 | 1592 |
1593 static int compute_cell_count(BytecodeStream* stream); | |
1594 | |
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1595 int number_of_cases() const { |
0 | 1596 int alen = array_len() - 2; // get rid of default case here. |
1597 assert(alen % per_case_cell_count == 0, "must be even"); | |
1598 return (alen / per_case_cell_count); | |
1599 } | |
1600 | |
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1601 uint default_count() const { |
0 | 1602 return array_uint_at(default_count_off_set); |
1603 } | |
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1604 int default_displacement() const { |
0 | 1605 return array_int_at(default_disaplacement_off_set); |
1606 } | |
1607 | |
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1608 uint count_at(int index) const { |
0 | 1609 return array_uint_at(case_array_start + |
1610 index * per_case_cell_count + | |
1611 relative_count_off_set); | |
1612 } | |
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1613 int displacement_at(int index) const { |
0 | 1614 return array_int_at(case_array_start + |
1615 index * per_case_cell_count + | |
1616 relative_displacement_off_set); | |
1617 } | |
1618 | |
1619 // Code generation support | |
1620 static ByteSize default_count_offset() { | |
1621 return array_element_offset(default_count_off_set); | |
1622 } | |
1623 static ByteSize default_displacement_offset() { | |
1624 return array_element_offset(default_disaplacement_off_set); | |
1625 } | |
1626 static ByteSize case_count_offset(int index) { | |
1627 return case_array_offset() + | |
1628 (per_case_size() * index) + | |
1629 relative_count_offset(); | |
1630 } | |
1631 static ByteSize case_array_offset() { | |
1632 return array_element_offset(case_array_start); | |
1633 } | |
1634 static ByteSize per_case_size() { | |
1635 return in_ByteSize(per_case_cell_count) * cell_size; | |
1636 } | |
1637 static ByteSize relative_count_offset() { | |
1638 return in_ByteSize(relative_count_off_set) * cell_size; | |
1639 } | |
1640 static ByteSize relative_displacement_offset() { | |
1641 return in_ByteSize(relative_displacement_off_set) * cell_size; | |
1642 } | |
1643 | |
1644 // Specific initialization. | |
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1645 void post_initialize(BytecodeStream* stream, MethodData* mdo); |
0 | 1646 |
1647 #ifndef PRODUCT | |
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1648 void print_data_on(outputStream* st, const char* extra = NULL) const; |
0 | 1649 #endif |
1650 }; | |
1651 | |
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1652 class ArgInfoData : public ArrayData { |
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1653 |
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1654 public: |
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1655 ArgInfoData(DataLayout* layout) : ArrayData(layout) { |
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1656 assert(layout->tag() == DataLayout::arg_info_data_tag, "wrong type"); |
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1657 } |
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1658 |
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1659 virtual bool is_ArgInfoData() const { return true; } |
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1660 |
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1661 |
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1662 int number_of_args() const { |
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1663 return array_len(); |
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1664 } |
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0
diff
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|
1665 |
12875
d13d7aba8c12
8023657: New type profiling points: arguments to call
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12316
diff
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|
1666 uint arg_modified(int arg) const { |
45
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diff
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|
1667 return array_uint_at(arg); |
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diff
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|
1668 } |
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parents:
0
diff
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|
1669 |
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0
diff
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|
1670 void set_arg_modified(int arg, uint val) { |
48a3fa21394b
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kvn
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diff
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|
1671 array_set_int_at(arg, val); |
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diff
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|
1672 } |
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0
diff
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|
1673 |
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kvn
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0
diff
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|
1674 #ifndef PRODUCT |
17728
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|
1675 void print_data_on(outputStream* st, const char* extra = NULL) const; |
45
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diff
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|
1676 #endif |
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diff
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|
1677 }; |
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diff
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|
1678 |
12962
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|
1679 // ParametersTypeData |
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|
1680 // |
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8026251: New type profiling points: parameters to methods
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|
1681 // A ParametersTypeData is used to access profiling information about |
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8026251: New type profiling points: parameters to methods
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|
1682 // types of parameters to a method |
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|
1683 class ParametersTypeData : public ArrayData { |
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8026251: New type profiling points: parameters to methods
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|
1684 |
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|
1685 private: |
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|
1686 TypeStackSlotEntries _parameters; |
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|
1687 |
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8026251: New type profiling points: parameters to methods
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|
1688 static int stack_slot_local_offset(int i) { |
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|
1689 assert_profiling_enabled(); |
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|
1690 return array_start_off_set + TypeStackSlotEntries::stack_slot_local_offset(i); |
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|
1691 } |
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|
1692 |
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|
1693 static int type_local_offset(int i) { |
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|
1694 assert_profiling_enabled(); |
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|
1695 return array_start_off_set + TypeStackSlotEntries::type_local_offset(i); |
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8026251: New type profiling points: parameters to methods
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|
1696 } |
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|
1697 |
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|
1698 static bool profiling_enabled(); |
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diff
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|
1699 static void assert_profiling_enabled() { |
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|
1700 assert(profiling_enabled(), "method parameters profiling should be on"); |
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8026251: New type profiling points: parameters to methods
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|
1701 } |
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|
1702 |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
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diff
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|
1703 public: |
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|
1704 ParametersTypeData(DataLayout* layout) : ArrayData(layout), _parameters(1, number_of_parameters()) { |
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|
1705 assert(layout->tag() == DataLayout::parameters_type_data_tag, "wrong type"); |
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|
1706 // Some compilers (VC++) don't want this passed in member initialization list |
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8026251: New type profiling points: parameters to methods
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diff
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|
1707 _parameters.set_profile_data(this); |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
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parents:
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diff
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|
1708 } |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
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diff
changeset
|
1709 |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
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diff
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|
1710 static int compute_cell_count(Method* m); |
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8026251: New type profiling points: parameters to methods
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diff
changeset
|
1711 |
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8026251: New type profiling points: parameters to methods
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|
1712 virtual bool is_ParametersTypeData() const { return true; } |
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8026251: New type profiling points: parameters to methods
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|
1713 |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
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diff
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|
1714 virtual void post_initialize(BytecodeStream* stream, MethodData* mdo); |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
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diff
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|
1715 |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
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diff
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|
1716 int number_of_parameters() const { |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
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|
1717 return array_len() / TypeStackSlotEntries::per_arg_count(); |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
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|
1718 } |
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|
1719 |
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|
1720 const TypeStackSlotEntries* parameters() const { return &_parameters; } |
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|
1721 |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
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|
1722 uint stack_slot(int i) const { |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
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diff
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|
1723 return _parameters.stack_slot(i); |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
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diff
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|
1724 } |
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|
1725 |
5ccbab1c69f3
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|
1726 void set_type(int i, Klass* k) { |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
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|
1727 intptr_t current = _parameters.type(i); |
5ccbab1c69f3
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diff
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|
1728 _parameters.set_type(i, TypeEntries::with_status((intptr_t)k, current)); |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
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diff
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|
1729 } |
5ccbab1c69f3
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diff
changeset
|
1730 |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
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|
1731 virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure) { |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
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diff
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|
1732 _parameters.clean_weak_klass_links(is_alive_closure); |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
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|
1733 } |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
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12882
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|
1734 |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
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12882
diff
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|
1735 #ifndef PRODUCT |
17728
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|
1736 virtual void print_data_on(outputStream* st, const char* extra = NULL) const; |
12962
5ccbab1c69f3
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|
1737 #endif |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
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diff
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|
1738 |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
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|
1739 static ByteSize stack_slot_offset(int i) { |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
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parents:
12882
diff
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|
1740 return cell_offset(stack_slot_local_offset(i)); |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
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12882
diff
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|
1741 } |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1742 |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1743 static ByteSize type_offset(int i) { |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1744 return cell_offset(type_local_offset(i)); |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1745 } |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
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12882
diff
changeset
|
1746 }; |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1747 |
17728
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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|
1748 // SpeculativeTrapData |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
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diff
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|
1749 // |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
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13080
diff
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|
1750 // A SpeculativeTrapData is used to record traps due to type |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
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diff
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|
1751 // speculation. It records the root of the compilation: that type |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
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diff
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|
1752 // speculation is wrong in the context of one compilation (for |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
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diff
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|
1753 // method1) doesn't mean it's wrong in the context of another one (for |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
13080
diff
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|
1754 // method2). Type speculation could have more/different data in the |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
13080
diff
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|
1755 // context of the compilation of method2 and it's worthwhile to try an |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
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13080
diff
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|
1756 // optimization that failed for compilation of method1 in the context |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
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diff
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|
1757 // of compilation of method2. |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
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diff
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|
1758 // Space for SpeculativeTrapData entries is allocated from the extra |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
13080
diff
changeset
|
1759 // data space in the MDO. If we run out of space, the trap data for |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
13080
diff
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|
1760 // the ProfileData at that bci is updated. |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
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diff
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|
1761 class SpeculativeTrapData : public ProfileData { |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
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13080
diff
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|
1762 protected: |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
13080
diff
changeset
|
1763 enum { |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
13080
diff
changeset
|
1764 method_offset, |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
13080
diff
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|
1765 speculative_trap_cell_count |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
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13080
diff
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|
1766 }; |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
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13080
diff
changeset
|
1767 public: |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
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13080
diff
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|
1768 SpeculativeTrapData(DataLayout* layout) : ProfileData(layout) { |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
13080
diff
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|
1769 assert(layout->tag() == DataLayout::speculative_trap_data_tag, "wrong type"); |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
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diff
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|
1770 } |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
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13080
diff
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|
1771 |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
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diff
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|
1772 virtual bool is_SpeculativeTrapData() const { return true; } |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
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diff
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|
1773 |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
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diff
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|
1774 static int static_cell_count() { |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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diff
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|
1775 return speculative_trap_cell_count; |
b8413a9cbb84
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roland
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diff
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|
1776 } |
b8413a9cbb84
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roland
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|
1777 |
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roland
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diff
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|
1778 virtual int cell_count() const { |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
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|
1779 return static_cell_count(); |
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roland
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|
1780 } |
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8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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|
1781 |
b8413a9cbb84
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diff
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|
1782 // Direct accessor |
b8413a9cbb84
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roland
parents:
13080
diff
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|
1783 Method* method() const { |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
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13080
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|
1784 return (Method*)intptr_at(method_offset); |
b8413a9cbb84
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|
1785 } |
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|
1786 |
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|
1787 void set_method(Method* m) { |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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diff
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|
1788 set_intptr_at(method_offset, (intptr_t)m); |
b8413a9cbb84
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roland
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|
1789 } |
b8413a9cbb84
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|
1790 |
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roland
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diff
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|
1791 #ifndef PRODUCT |
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roland
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diff
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|
1792 virtual void print_data_on(outputStream* st, const char* extra = NULL) const; |
b8413a9cbb84
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roland
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|
1793 #endif |
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|
1794 }; |
b8413a9cbb84
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|
1795 |
6725
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coleenp
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3905
diff
changeset
|
1796 // MethodData* |
0 | 1797 // |
6725
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1798 // A MethodData* holds information which has been collected about |
0 | 1799 // a method. Its layout looks like this: |
1800 // | |
1801 // ----------------------------- | |
1802 // | header | | |
1803 // | klass | | |
1804 // ----------------------------- | |
1805 // | method | | |
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1806 // | size of the MethodData* | |
0 | 1807 // ----------------------------- |
1808 // | Data entries... | | |
1809 // | (variable size) | | |
1810 // | | | |
1811 // . . | |
1812 // . . | |
1813 // . . | |
1814 // | | | |
1815 // ----------------------------- | |
1816 // | |
1817 // The data entry area is a heterogeneous array of DataLayouts. Each | |
1818 // DataLayout in the array corresponds to a specific bytecode in the | |
1819 // method. The entries in the array are sorted by the corresponding | |
1820 // bytecode. Access to the data is via resource-allocated ProfileData, | |
1821 // which point to the underlying blocks of DataLayout structures. | |
1822 // | |
1823 // During interpretation, if profiling in enabled, the interpreter | |
1824 // maintains a method data pointer (mdp), which points at the entry | |
1825 // in the array corresponding to the current bci. In the course of | |
1826 // intepretation, when a bytecode is encountered that has profile data | |
1827 // associated with it, the entry pointed to by mdp is updated, then the | |
1828 // mdp is adjusted to point to the next appropriate DataLayout. If mdp | |
1829 // is NULL to begin with, the interpreter assumes that the current method | |
1830 // is not (yet) being profiled. | |
1831 // | |
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1832 // In MethodData* parlance, "dp" is a "data pointer", the actual address |
0 | 1833 // of a DataLayout element. A "di" is a "data index", the offset in bytes |
1834 // from the base of the data entry array. A "displacement" is the byte offset | |
1835 // in certain ProfileData objects that indicate the amount the mdp must be | |
1836 // adjusted in the event of a change in control flow. | |
1837 // | |
1838 | |
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1839 class MethodData : public Metadata { |
0 | 1840 friend class VMStructs; |
1841 private: | |
1842 friend class ProfileData; | |
1843 | |
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1844 // Back pointer to the Method* |
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1845 Method* _method; |
0 | 1846 |
1847 // Size of this oop in bytes | |
1848 int _size; | |
1849 | |
1850 // Cached hint for bci_to_dp and bci_to_data | |
1851 int _hint_di; | |
1852 | |
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1853 Mutex _extra_data_lock; |
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1854 |
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1855 MethodData(methodHandle method, int size, TRAPS); |
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1856 public: |
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1857 static MethodData* allocate(ClassLoaderData* loader_data, methodHandle method, TRAPS); |
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1858 MethodData() : _extra_data_lock(Monitor::leaf, "MDO extra data lock") {}; // For ciMethodData |
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1859 |
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1860 bool is_methodData() const volatile { return true; } |
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1861 |
0 | 1862 // Whole-method sticky bits and flags |
1863 enum { | |
17780 | 1864 _trap_hist_limit = 19, // decoupled from Deoptimization::Reason_LIMIT |
0 | 1865 _trap_hist_mask = max_jubyte, |
1866 _extra_data_count = 4 // extra DataLayout headers, for trap history | |
1867 }; // Public flag values | |
1868 private: | |
1869 uint _nof_decompiles; // count of all nmethod removals | |
1870 uint _nof_overflow_recompiles; // recompile count, excluding recomp. bits | |
1871 uint _nof_overflow_traps; // trap count, excluding _trap_hist | |
1872 union { | |
1873 intptr_t _align; | |
1874 u1 _array[_trap_hist_limit]; | |
1875 } _trap_hist; | |
1876 | |
1877 // Support for interprocedural escape analysis, from Thomas Kotzmann. | |
1878 intx _eflags; // flags on escape information | |
1879 intx _arg_local; // bit set of non-escaping arguments | |
1880 intx _arg_stack; // bit set of stack-allocatable arguments | |
1881 intx _arg_returned; // bit set of returned arguments | |
1882 | |
1783 | 1883 int _creation_mileage; // method mileage at MDO creation |
1884 | |
1885 // How many invocations has this MDO seen? | |
1886 // These counters are used to determine the exact age of MDO. | |
1887 // We need those because in tiered a method can be concurrently | |
1888 // executed at different levels. | |
1889 InvocationCounter _invocation_counter; | |
1890 // Same for backedges. | |
1891 InvocationCounter _backedge_counter; | |
2252 | 1892 // Counter values at the time profiling started. |
1893 int _invocation_counter_start; | |
1894 int _backedge_counter_start; | |
17780 | 1895 |
1896 #if INCLUDE_RTM_OPT | |
1897 // State of RTM code generation during compilation of the method | |
1898 int _rtm_state; | |
1899 #endif | |
1900 | |
1783 | 1901 // Number of loops and blocks is computed when compiling the first |
1902 // time with C1. It is used to determine if method is trivial. | |
1903 short _num_loops; | |
1904 short _num_blocks; | |
1905 // Highest compile level this method has ever seen. | |
1906 u1 _highest_comp_level; | |
1907 // Same for OSR level | |
1908 u1 _highest_osr_comp_level; | |
1909 // Does this method contain anything worth profiling? | |
1910 bool _would_profile; | |
0 | 1911 |
1912 // Size of _data array in bytes. (Excludes header and extra_data fields.) | |
1913 int _data_size; | |
1914 | |
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1915 // data index for the area dedicated to parameters. -1 if no |
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1916 // parameter profiling. |
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1917 int _parameters_type_data_di; |
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1918 |
0 | 1919 // Beginning of the data entries |
1920 intptr_t _data[1]; | |
1921 | |
1922 // Helper for size computation | |
1923 static int compute_data_size(BytecodeStream* stream); | |
1924 static int bytecode_cell_count(Bytecodes::Code code); | |
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1925 static bool is_speculative_trap_bytecode(Bytecodes::Code code); |
0 | 1926 enum { no_profile_data = -1, variable_cell_count = -2 }; |
1927 | |
1928 // Helper for initialization | |
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1929 DataLayout* data_layout_at(int data_index) const { |
0 | 1930 assert(data_index % sizeof(intptr_t) == 0, "unaligned"); |
1931 return (DataLayout*) (((address)_data) + data_index); | |
1932 } | |
1933 | |
1934 // Initialize an individual data segment. Returns the size of | |
1935 // the segment in bytes. | |
1936 int initialize_data(BytecodeStream* stream, int data_index); | |
1937 | |
1938 // Helper for data_at | |
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1939 DataLayout* limit_data_position() const { |
0 | 1940 return (DataLayout*)((address)data_base() + _data_size); |
1941 } | |
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1942 bool out_of_bounds(int data_index) const { |
0 | 1943 return data_index >= data_size(); |
1944 } | |
1945 | |
1946 // Give each of the data entries a chance to perform specific | |
1947 // data initialization. | |
1948 void post_initialize(BytecodeStream* stream); | |
1949 | |
1950 // hint accessors | |
1951 int hint_di() const { return _hint_di; } | |
1952 void set_hint_di(int di) { | |
1953 assert(!out_of_bounds(di), "hint_di out of bounds"); | |
1954 _hint_di = di; | |
1955 } | |
1956 ProfileData* data_before(int bci) { | |
1957 // avoid SEGV on this edge case | |
1958 if (data_size() == 0) | |
1959 return NULL; | |
1960 int hint = hint_di(); | |
1961 if (data_layout_at(hint)->bci() <= bci) | |
1962 return data_at(hint); | |
1963 return first_data(); | |
1964 } | |
1965 | |
1966 // What is the index of the first data entry? | |
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1967 int first_di() const { return 0; } |
0 | 1968 |
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1969 ProfileData* bci_to_extra_data_helper(int bci, Method* m, DataLayout*& dp, bool concurrent); |
0 | 1970 // Find or create an extra ProfileData: |
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1971 ProfileData* bci_to_extra_data(int bci, Method* m, bool create_if_missing); |
0 | 1972 |
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1973 // return the argument info cell |
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1974 ArgInfoData *arg_info(); |
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1975 |
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1976 enum { |
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1977 no_type_profile = 0, |
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1978 type_profile_jsr292 = 1, |
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1979 type_profile_all = 2 |
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1980 }; |
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1981 |
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1982 static bool profile_jsr292(methodHandle m, int bci); |
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1983 static int profile_arguments_flag(); |
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1984 static bool profile_arguments_jsr292_only(); |
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1985 static bool profile_all_arguments(); |
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1986 static bool profile_arguments_for_invoke(methodHandle m, int bci); |
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1987 static int profile_return_flag(); |
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1988 static bool profile_all_return(); |
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1989 static bool profile_return_for_invoke(methodHandle m, int bci); |
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1990 static int profile_parameters_flag(); |
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1991 static bool profile_parameters_jsr292_only(); |
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1992 static bool profile_all_parameters(); |
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1993 |
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1994 void clean_extra_data(BoolObjectClosure* is_alive); |
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1995 void clean_extra_data_helper(DataLayout* dp, int shift, bool reset = false); |
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1996 void verify_extra_data_clean(BoolObjectClosure* is_alive); |
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1997 |
0 | 1998 public: |
1999 static int header_size() { | |
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2000 return sizeof(MethodData)/wordSize; |
0 | 2001 } |
2002 | |
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2003 // Compute the size of a MethodData* before it is created. |
0 | 2004 static int compute_allocation_size_in_bytes(methodHandle method); |
2005 static int compute_allocation_size_in_words(methodHandle method); | |
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2006 static int compute_extra_data_count(int data_size, int empty_bc_count, bool needs_speculative_traps); |
0 | 2007 |
2008 // Determine if a given bytecode can have profile information. | |
2009 static bool bytecode_has_profile(Bytecodes::Code code) { | |
2010 return bytecode_cell_count(code) != no_profile_data; | |
2011 } | |
2012 | |
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2013 // reset into original state |
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2014 void init(); |
0 | 2015 |
2016 // My size | |
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2017 int size_in_bytes() const { return _size; } |
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2018 int size() const { return align_object_size(align_size_up(_size, BytesPerWord)/BytesPerWord); } |
7956 | 2019 #if INCLUDE_SERVICES |
2020 void collect_statistics(KlassSizeStats *sz) const; | |
2021 #endif | |
0 | 2022 |
2023 int creation_mileage() const { return _creation_mileage; } | |
2024 void set_creation_mileage(int x) { _creation_mileage = x; } | |
1783 | 2025 |
2026 int invocation_count() { | |
2027 if (invocation_counter()->carry()) { | |
2028 return InvocationCounter::count_limit; | |
2029 } | |
2030 return invocation_counter()->count(); | |
2031 } | |
2032 int backedge_count() { | |
2033 if (backedge_counter()->carry()) { | |
2034 return InvocationCounter::count_limit; | |
2035 } | |
2036 return backedge_counter()->count(); | |
2037 } | |
2038 | |
2252 | 2039 int invocation_count_start() { |
2040 if (invocation_counter()->carry()) { | |
2041 return 0; | |
2042 } | |
2043 return _invocation_counter_start; | |
2044 } | |
2045 | |
2046 int backedge_count_start() { | |
2047 if (backedge_counter()->carry()) { | |
2048 return 0; | |
2049 } | |
2050 return _backedge_counter_start; | |
2051 } | |
2052 | |
2053 int invocation_count_delta() { return invocation_count() - invocation_count_start(); } | |
2054 int backedge_count_delta() { return backedge_count() - backedge_count_start(); } | |
2055 | |
2056 void reset_start_counters() { | |
2057 _invocation_counter_start = invocation_count(); | |
2058 _backedge_counter_start = backedge_count(); | |
2059 } | |
2060 | |
1783 | 2061 InvocationCounter* invocation_counter() { return &_invocation_counter; } |
2062 InvocationCounter* backedge_counter() { return &_backedge_counter; } | |
2063 | |
17780 | 2064 #if INCLUDE_RTM_OPT |
2065 int rtm_state() const { | |
2066 return _rtm_state; | |
2067 } | |
2068 void set_rtm_state(RTMState rstate) { | |
2069 _rtm_state = (int)rstate; | |
2070 } | |
2071 void atomic_set_rtm_state(RTMState rstate) { | |
2072 Atomic::store((int)rstate, &_rtm_state); | |
2073 } | |
2074 | |
2075 static int rtm_state_offset_in_bytes() { | |
2076 return offset_of(MethodData, _rtm_state); | |
2077 } | |
2078 #endif | |
2079 | |
1783 | 2080 void set_would_profile(bool p) { _would_profile = p; } |
2081 bool would_profile() const { return _would_profile; } | |
2082 | |
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2083 int highest_comp_level() const { return _highest_comp_level; } |
1783 | 2084 void set_highest_comp_level(int level) { _highest_comp_level = level; } |
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2085 int highest_osr_comp_level() const { return _highest_osr_comp_level; } |
1783 | 2086 void set_highest_osr_comp_level(int level) { _highest_osr_comp_level = level; } |
2087 | |
2088 int num_loops() const { return _num_loops; } | |
2089 void set_num_loops(int n) { _num_loops = n; } | |
2090 int num_blocks() const { return _num_blocks; } | |
2091 void set_num_blocks(int n) { _num_blocks = n; } | |
2092 | |
0 | 2093 bool is_mature() const; // consult mileage and ProfileMaturityPercentage |
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2094 static int mileage_of(Method* m); |
0 | 2095 |
2096 // Support for interprocedural escape analysis, from Thomas Kotzmann. | |
2097 enum EscapeFlag { | |
2098 estimated = 1 << 0, | |
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2099 return_local = 1 << 1, |
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2100 return_allocated = 1 << 2, |
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2101 allocated_escapes = 1 << 3, |
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2102 unknown_modified = 1 << 4 |
0 | 2103 }; |
2104 | |
2105 intx eflags() { return _eflags; } | |
2106 intx arg_local() { return _arg_local; } | |
2107 intx arg_stack() { return _arg_stack; } | |
2108 intx arg_returned() { return _arg_returned; } | |
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2109 uint arg_modified(int a) { ArgInfoData *aid = arg_info(); |
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2110 assert(aid != NULL, "arg_info must be not null"); |
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2111 assert(a >= 0 && a < aid->number_of_args(), "valid argument number"); |
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2112 return aid->arg_modified(a); } |
0 | 2113 |
2114 void set_eflags(intx v) { _eflags = v; } | |
2115 void set_arg_local(intx v) { _arg_local = v; } | |
2116 void set_arg_stack(intx v) { _arg_stack = v; } | |
2117 void set_arg_returned(intx v) { _arg_returned = v; } | |
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2118 void set_arg_modified(int a, uint v) { ArgInfoData *aid = arg_info(); |
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2119 assert(aid != NULL, "arg_info must be not null"); |
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2120 assert(a >= 0 && a < aid->number_of_args(), "valid argument number"); |
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2121 aid->set_arg_modified(a, v); } |
0 | 2122 |
2123 void clear_escape_info() { _eflags = _arg_local = _arg_stack = _arg_returned = 0; } | |
2124 | |
2125 // Location and size of data area | |
2126 address data_base() const { | |
2127 return (address) _data; | |
2128 } | |
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2129 int data_size() const { |
0 | 2130 return _data_size; |
2131 } | |
2132 | |
2133 // Accessors | |
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2134 Method* method() const { return _method; } |
0 | 2135 |
2136 // Get the data at an arbitrary (sort of) data index. | |
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2137 ProfileData* data_at(int data_index) const; |
0 | 2138 |
2139 // Walk through the data in order. | |
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2140 ProfileData* first_data() const { return data_at(first_di()); } |
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2141 ProfileData* next_data(ProfileData* current) const; |
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2142 bool is_valid(ProfileData* current) const { return current != NULL; } |
0 | 2143 |
2144 // Convert a dp (data pointer) to a di (data index). | |
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2145 int dp_to_di(address dp) const { |
0 | 2146 return dp - ((address)_data); |
2147 } | |
2148 | |
2149 address di_to_dp(int di) { | |
2150 return (address)data_layout_at(di); | |
2151 } | |
2152 | |
2153 // bci to di/dp conversion. | |
2154 address bci_to_dp(int bci); | |
2155 int bci_to_di(int bci) { | |
2156 return dp_to_di(bci_to_dp(bci)); | |
2157 } | |
2158 | |
2159 // Get the data at an arbitrary bci, or NULL if there is none. | |
2160 ProfileData* bci_to_data(int bci); | |
2161 | |
2162 // Same, but try to create an extra_data record if one is needed: | |
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2163 ProfileData* allocate_bci_to_data(int bci, Method* m) { |
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2164 ProfileData* data = NULL; |
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2165 // If m not NULL, try to allocate a SpeculativeTrapData entry |
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2166 if (m == NULL) { |
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2167 data = bci_to_data(bci); |
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2168 } |
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2169 if (data != NULL) { |
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2170 return data; |
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2171 } |
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2172 data = bci_to_extra_data(bci, m, true); |
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2173 if (data != NULL) { |
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2174 return data; |
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2175 } |
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2176 // If SpeculativeTrapData allocation fails try to allocate a |
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2177 // regular entry |
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2178 data = bci_to_data(bci); |
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2179 if (data != NULL) { |
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2180 return data; |
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2181 } |
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2182 return bci_to_extra_data(bci, NULL, true); |
0 | 2183 } |
2184 | |
2185 // Add a handful of extra data records, for trap tracking. | |
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2186 DataLayout* extra_data_base() const { return limit_data_position(); } |
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2187 DataLayout* extra_data_limit() const { return (DataLayout*)((address)this + size_in_bytes()); } |
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2188 int extra_data_size() const { return (address)extra_data_limit() |
0 | 2189 - (address)extra_data_base(); } |
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2190 static DataLayout* next_extra(DataLayout* dp); |
0 | 2191 |
2192 // Return (uint)-1 for overflow. | |
2193 uint trap_count(int reason) const { | |
2194 assert((uint)reason < _trap_hist_limit, "oob"); | |
2195 return (int)((_trap_hist._array[reason]+1) & _trap_hist_mask) - 1; | |
2196 } | |
2197 // For loops: | |
2198 static uint trap_reason_limit() { return _trap_hist_limit; } | |
2199 static uint trap_count_limit() { return _trap_hist_mask; } | |
2200 uint inc_trap_count(int reason) { | |
2201 // Count another trap, anywhere in this method. | |
2202 assert(reason >= 0, "must be single trap"); | |
2203 if ((uint)reason < _trap_hist_limit) { | |
2204 uint cnt1 = 1 + _trap_hist._array[reason]; | |
2205 if ((cnt1 & _trap_hist_mask) != 0) { // if no counter overflow... | |
2206 _trap_hist._array[reason] = cnt1; | |
2207 return cnt1; | |
2208 } else { | |
2209 return _trap_hist_mask + (++_nof_overflow_traps); | |
2210 } | |
2211 } else { | |
2212 // Could not represent the count in the histogram. | |
2213 return (++_nof_overflow_traps); | |
2214 } | |
2215 } | |
2216 | |
2217 uint overflow_trap_count() const { | |
2218 return _nof_overflow_traps; | |
2219 } | |
2220 uint overflow_recompile_count() const { | |
2221 return _nof_overflow_recompiles; | |
2222 } | |
2223 void inc_overflow_recompile_count() { | |
2224 _nof_overflow_recompiles += 1; | |
2225 } | |
2226 uint decompile_count() const { | |
2227 return _nof_decompiles; | |
2228 } | |
2229 void inc_decompile_count() { | |
2230 _nof_decompiles += 1; | |
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2231 if (decompile_count() > (uint)PerMethodRecompilationCutoff) { |
7998 | 2232 method()->set_not_compilable(CompLevel_full_optimization, true, "decompile_count > PerMethodRecompilationCutoff"); |
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2233 } |
0 | 2234 } |
2235 | |
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2236 // Return pointer to area dedicated to parameters in MDO |
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2237 ParametersTypeData* parameters_type_data() const { |
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2238 return _parameters_type_data_di != -1 ? data_layout_at(_parameters_type_data_di)->data_in()->as_ParametersTypeData() : NULL; |
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2239 } |
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2240 |
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2241 int parameters_type_data_di() const { |
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2242 assert(_parameters_type_data_di != -1, "no args type data"); |
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2243 return _parameters_type_data_di; |
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2244 } |
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2245 |
0 | 2246 // Support for code generation |
2247 static ByteSize data_offset() { | |
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2248 return byte_offset_of(MethodData, _data[0]); |
0 | 2249 } |
2250 | |
1783 | 2251 static ByteSize invocation_counter_offset() { |
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2252 return byte_offset_of(MethodData, _invocation_counter); |
1783 | 2253 } |
2254 static ByteSize backedge_counter_offset() { | |
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2255 return byte_offset_of(MethodData, _backedge_counter); |
1783 | 2256 } |
2257 | |
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2258 static ByteSize parameters_type_data_di_offset() { |
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2259 return byte_offset_of(MethodData, _parameters_type_data_di); |
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2260 } |
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2261 |
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2262 // Deallocation support - no pointer fields to deallocate |
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2263 void deallocate_contents(ClassLoaderData* loader_data) {} |
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2264 |
0 | 2265 // GC support |
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2266 void set_size(int object_size_in_bytes) { _size = object_size_in_bytes; } |
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2267 |
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2268 // Printing |
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2269 #ifndef PRODUCT |
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2270 void print_on (outputStream* st) const; |
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2271 #endif |
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2272 void print_value_on(outputStream* st) const; |
0 | 2273 |
2274 #ifndef PRODUCT | |
2275 // printing support for method data | |
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2276 void print_data_on(outputStream* st) const; |
0 | 2277 #endif |
2278 | |
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2279 const char* internal_name() const { return "{method data}"; } |
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2280 |
0 | 2281 // verification |
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2282 void verify_on(outputStream* st); |
0 | 2283 void verify_data_on(outputStream* st); |
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2284 |
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2285 static bool profile_parameters_for_method(methodHandle m); |
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2286 static bool profile_arguments(); |
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2287 static bool profile_return(); |
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2288 static bool profile_parameters(); |
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2289 static bool profile_return_jsr292_only(); |
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2290 |
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2291 void clean_method_data(BoolObjectClosure* is_alive); |
0 | 2292 }; |
1972 | 2293 |
2294 #endif // SHARE_VM_OOPS_METHODDATAOOP_HPP |