Mercurial > hg > graal-jvmci-8
annotate src/share/vm/oops/methodData.hpp @ 17728:b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
Summary: support for speculative traps that keep track of the root of the compilation in which a trap occurs.
Reviewed-by: kvn, twisti
author | roland |
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date | Tue, 25 Feb 2014 18:16:24 +0100 |
parents | 6e1826d5c23e |
children | 1a43981d86ea |
rev | line source |
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0 | 1 /* |
7956 | 2 * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
1552
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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 } | |
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193 bool atomic_set_header(intptr_t value) { |
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194 if (Atomic::cmpxchg_ptr(value, (volatile intptr_t*)&_header._bits, 0) == 0) { |
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195 return true; |
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196 } |
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197 return false; |
0 | 198 } |
199 intptr_t header() { | |
200 return _header._bits; | |
201 } | |
202 void set_cell_at(int index, intptr_t value) { | |
203 _cells[index] = value; | |
204 } | |
205 void release_set_cell_at(int index, intptr_t value) { | |
206 OrderAccess::release_store_ptr(&_cells[index], value); | |
207 } | |
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208 intptr_t cell_at(int index) const { |
0 | 209 return _cells[index]; |
210 } | |
211 | |
212 void set_flag_at(int flag_number) { | |
213 assert(flag_number < flag_limit, "oob"); | |
214 _header._struct._flags |= (0x1 << flag_number); | |
215 } | |
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216 bool flag_at(int flag_number) const { |
0 | 217 assert(flag_number < flag_limit, "oob"); |
218 return (_header._struct._flags & (0x1 << flag_number)) != 0; | |
219 } | |
220 | |
221 // Low-level support for code generation. | |
222 static ByteSize header_offset() { | |
223 return byte_offset_of(DataLayout, _header); | |
224 } | |
225 static ByteSize tag_offset() { | |
226 return byte_offset_of(DataLayout, _header._struct._tag); | |
227 } | |
228 static ByteSize flags_offset() { | |
229 return byte_offset_of(DataLayout, _header._struct._flags); | |
230 } | |
231 static ByteSize bci_offset() { | |
232 return byte_offset_of(DataLayout, _header._struct._bci); | |
233 } | |
234 static ByteSize cell_offset(int index) { | |
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235 return byte_offset_of(DataLayout, _cells) + in_ByteSize(index * cell_size); |
0 | 236 } |
237 // Return a value which, when or-ed as a byte into _flags, sets the flag. | |
238 static int flag_number_to_byte_constant(int flag_number) { | |
239 assert(0 <= flag_number && flag_number < flag_limit, "oob"); | |
240 DataLayout temp; temp.set_header(0); | |
241 temp.set_flag_at(flag_number); | |
242 return temp._header._struct._flags; | |
243 } | |
244 // Return a value which, when or-ed as a word into _header, sets the flag. | |
245 static intptr_t flag_mask_to_header_mask(int byte_constant) { | |
246 DataLayout temp; temp.set_header(0); | |
247 temp._header._struct._flags = byte_constant; | |
248 return temp._header._bits; | |
249 } | |
941 | 250 |
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251 ProfileData* data_in(); |
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252 |
941 | 253 // GC support |
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254 void clean_weak_klass_links(BoolObjectClosure* cl); |
0 | 255 }; |
256 | |
257 | |
258 // ProfileData class hierarchy | |
259 class ProfileData; | |
260 class BitData; | |
261 class CounterData; | |
262 class ReceiverTypeData; | |
263 class VirtualCallData; | |
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264 class VirtualCallTypeData; |
0 | 265 class RetData; |
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266 class CallTypeData; |
0 | 267 class JumpData; |
268 class BranchData; | |
269 class ArrayData; | |
270 class MultiBranchData; | |
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271 class ArgInfoData; |
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272 class ParametersTypeData; |
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273 class SpeculativeTrapData; |
0 | 274 |
275 // ProfileData | |
276 // | |
277 // A ProfileData object is created to refer to a section of profiling | |
278 // data in a structured way. | |
279 class ProfileData : public ResourceObj { | |
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280 friend class TypeEntries; |
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281 friend class ReturnTypeEntry; |
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282 friend class TypeStackSlotEntries; |
0 | 283 private: |
284 #ifndef PRODUCT | |
285 enum { | |
286 tab_width_one = 16, | |
287 tab_width_two = 36 | |
288 }; | |
289 #endif // !PRODUCT | |
290 | |
291 // This is a pointer to a section of profiling data. | |
292 DataLayout* _data; | |
293 | |
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294 char* print_data_on_helper(const MethodData* md) const; |
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295 |
0 | 296 protected: |
297 DataLayout* data() { return _data; } | |
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298 const DataLayout* data() const { return _data; } |
0 | 299 |
300 enum { | |
301 cell_size = DataLayout::cell_size | |
302 }; | |
303 | |
304 public: | |
305 // How many cells are in this? | |
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306 virtual int cell_count() const { |
0 | 307 ShouldNotReachHere(); |
308 return -1; | |
309 } | |
310 | |
311 // Return the size of this data. | |
312 int size_in_bytes() { | |
313 return DataLayout::compute_size_in_bytes(cell_count()); | |
314 } | |
315 | |
316 protected: | |
317 // Low-level accessors for underlying data | |
318 void set_intptr_at(int index, intptr_t value) { | |
319 assert(0 <= index && index < cell_count(), "oob"); | |
320 data()->set_cell_at(index, value); | |
321 } | |
322 void release_set_intptr_at(int index, intptr_t value) { | |
323 assert(0 <= index && index < cell_count(), "oob"); | |
324 data()->release_set_cell_at(index, value); | |
325 } | |
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326 intptr_t intptr_at(int index) const { |
0 | 327 assert(0 <= index && index < cell_count(), "oob"); |
328 return data()->cell_at(index); | |
329 } | |
330 void set_uint_at(int index, uint value) { | |
331 set_intptr_at(index, (intptr_t) value); | |
332 } | |
333 void release_set_uint_at(int index, uint value) { | |
334 release_set_intptr_at(index, (intptr_t) value); | |
335 } | |
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336 uint uint_at(int index) const { |
0 | 337 return (uint)intptr_at(index); |
338 } | |
339 void set_int_at(int index, int value) { | |
340 set_intptr_at(index, (intptr_t) value); | |
341 } | |
342 void release_set_int_at(int index, int value) { | |
343 release_set_intptr_at(index, (intptr_t) value); | |
344 } | |
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345 int int_at(int index) const { |
0 | 346 return (int)intptr_at(index); |
347 } | |
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348 int int_at_unchecked(int index) const { |
0 | 349 return (int)data()->cell_at(index); |
350 } | |
351 void set_oop_at(int index, oop value) { | |
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352 set_intptr_at(index, cast_from_oop<intptr_t>(value)); |
0 | 353 } |
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354 oop oop_at(int index) const { |
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355 return cast_to_oop(intptr_at(index)); |
0 | 356 } |
357 | |
358 void set_flag_at(int flag_number) { | |
359 data()->set_flag_at(flag_number); | |
360 } | |
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361 bool flag_at(int flag_number) const { |
0 | 362 return data()->flag_at(flag_number); |
363 } | |
364 | |
365 // two convenient imports for use by subclasses: | |
366 static ByteSize cell_offset(int index) { | |
367 return DataLayout::cell_offset(index); | |
368 } | |
369 static int flag_number_to_byte_constant(int flag_number) { | |
370 return DataLayout::flag_number_to_byte_constant(flag_number); | |
371 } | |
372 | |
373 ProfileData(DataLayout* data) { | |
374 _data = data; | |
375 } | |
376 | |
377 public: | |
378 // Constructor for invalid ProfileData. | |
379 ProfileData(); | |
380 | |
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381 u2 bci() const { |
0 | 382 return data()->bci(); |
383 } | |
384 | |
385 address dp() { | |
386 return (address)_data; | |
387 } | |
388 | |
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389 int trap_state() const { |
0 | 390 return data()->trap_state(); |
391 } | |
392 void set_trap_state(int new_state) { | |
393 data()->set_trap_state(new_state); | |
394 } | |
395 | |
396 // Type checking | |
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397 virtual bool is_BitData() const { return false; } |
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398 virtual bool is_CounterData() const { return false; } |
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399 virtual bool is_JumpData() const { return false; } |
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400 virtual bool is_ReceiverTypeData()const { return false; } |
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401 virtual bool is_VirtualCallData() const { return false; } |
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402 virtual bool is_RetData() const { return false; } |
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403 virtual bool is_BranchData() const { return false; } |
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404 virtual bool is_ArrayData() const { return false; } |
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405 virtual bool is_MultiBranchData() const { return false; } |
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406 virtual bool is_ArgInfoData() const { return false; } |
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407 virtual bool is_CallTypeData() const { return false; } |
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408 virtual bool is_VirtualCallTypeData()const { return false; } |
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409 virtual bool is_ParametersTypeData() const { return false; } |
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410 virtual bool is_SpeculativeTrapData()const { return false; } |
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411 |
0 | 412 |
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413 BitData* as_BitData() const { |
0 | 414 assert(is_BitData(), "wrong type"); |
415 return is_BitData() ? (BitData*) this : NULL; | |
416 } | |
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417 CounterData* as_CounterData() const { |
0 | 418 assert(is_CounterData(), "wrong type"); |
419 return is_CounterData() ? (CounterData*) this : NULL; | |
420 } | |
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421 JumpData* as_JumpData() const { |
0 | 422 assert(is_JumpData(), "wrong type"); |
423 return is_JumpData() ? (JumpData*) this : NULL; | |
424 } | |
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425 ReceiverTypeData* as_ReceiverTypeData() const { |
0 | 426 assert(is_ReceiverTypeData(), "wrong type"); |
427 return is_ReceiverTypeData() ? (ReceiverTypeData*)this : NULL; | |
428 } | |
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429 VirtualCallData* as_VirtualCallData() const { |
0 | 430 assert(is_VirtualCallData(), "wrong type"); |
431 return is_VirtualCallData() ? (VirtualCallData*)this : NULL; | |
432 } | |
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433 RetData* as_RetData() const { |
0 | 434 assert(is_RetData(), "wrong type"); |
435 return is_RetData() ? (RetData*) this : NULL; | |
436 } | |
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437 BranchData* as_BranchData() const { |
0 | 438 assert(is_BranchData(), "wrong type"); |
439 return is_BranchData() ? (BranchData*) this : NULL; | |
440 } | |
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441 ArrayData* as_ArrayData() const { |
0 | 442 assert(is_ArrayData(), "wrong type"); |
443 return is_ArrayData() ? (ArrayData*) this : NULL; | |
444 } | |
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445 MultiBranchData* as_MultiBranchData() const { |
0 | 446 assert(is_MultiBranchData(), "wrong type"); |
447 return is_MultiBranchData() ? (MultiBranchData*)this : NULL; | |
448 } | |
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449 ArgInfoData* as_ArgInfoData() const { |
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450 assert(is_ArgInfoData(), "wrong type"); |
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451 return is_ArgInfoData() ? (ArgInfoData*)this : NULL; |
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452 } |
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453 CallTypeData* as_CallTypeData() const { |
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454 assert(is_CallTypeData(), "wrong type"); |
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455 return is_CallTypeData() ? (CallTypeData*)this : NULL; |
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456 } |
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457 VirtualCallTypeData* as_VirtualCallTypeData() const { |
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458 assert(is_VirtualCallTypeData(), "wrong type"); |
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459 return is_VirtualCallTypeData() ? (VirtualCallTypeData*)this : NULL; |
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460 } |
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461 ParametersTypeData* as_ParametersTypeData() const { |
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462 assert(is_ParametersTypeData(), "wrong type"); |
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463 return is_ParametersTypeData() ? (ParametersTypeData*)this : NULL; |
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464 } |
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465 SpeculativeTrapData* as_SpeculativeTrapData() const { |
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466 assert(is_SpeculativeTrapData(), "wrong type"); |
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467 return is_SpeculativeTrapData() ? (SpeculativeTrapData*)this : NULL; |
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468 } |
0 | 469 |
470 | |
471 // Subclass specific initialization | |
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472 virtual void post_initialize(BytecodeStream* stream, MethodData* mdo) {} |
0 | 473 |
474 // GC support | |
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475 virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure) {} |
0 | 476 |
477 // CI translation: ProfileData can represent both MethodDataOop data | |
478 // as well as CIMethodData data. This function is provided for translating | |
479 // an oop in a ProfileData to the ci equivalent. Generally speaking, | |
480 // most ProfileData don't require any translation, so we provide the null | |
481 // translation here, and the required translators are in the ci subclasses. | |
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482 virtual void translate_from(const ProfileData* data) {} |
0 | 483 |
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484 virtual void print_data_on(outputStream* st, const char* extra = NULL) const { |
0 | 485 ShouldNotReachHere(); |
486 } | |
487 | |
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488 void print_data_on(outputStream* st, const MethodData* md) const; |
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489 |
0 | 490 #ifndef PRODUCT |
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491 void print_shared(outputStream* st, const char* name, const char* extra) const; |
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492 void tab(outputStream* st, bool first = false) const; |
0 | 493 #endif |
494 }; | |
495 | |
496 // BitData | |
497 // | |
498 // A BitData holds a flag or two in its header. | |
499 class BitData : public ProfileData { | |
500 protected: | |
501 enum { | |
502 // null_seen: | |
503 // saw a null operand (cast/aastore/instanceof) | |
504 null_seen_flag = DataLayout::first_flag + 0 | |
505 }; | |
506 enum { bit_cell_count = 0 }; // no additional data fields needed. | |
507 public: | |
508 BitData(DataLayout* layout) : ProfileData(layout) { | |
509 } | |
510 | |
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511 virtual bool is_BitData() const { return true; } |
0 | 512 |
513 static int static_cell_count() { | |
514 return bit_cell_count; | |
515 } | |
516 | |
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517 virtual int cell_count() const { |
0 | 518 return static_cell_count(); |
519 } | |
520 | |
521 // Accessor | |
522 | |
523 // The null_seen flag bit is specially known to the interpreter. | |
524 // Consulting it allows the compiler to avoid setting up null_check traps. | |
525 bool null_seen() { return flag_at(null_seen_flag); } | |
526 void set_null_seen() { set_flag_at(null_seen_flag); } | |
527 | |
528 | |
529 // Code generation support | |
530 static int null_seen_byte_constant() { | |
531 return flag_number_to_byte_constant(null_seen_flag); | |
532 } | |
533 | |
534 static ByteSize bit_data_size() { | |
535 return cell_offset(bit_cell_count); | |
536 } | |
537 | |
538 #ifndef PRODUCT | |
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539 void print_data_on(outputStream* st, const char* extra = NULL) const; |
0 | 540 #endif |
541 }; | |
542 | |
543 // CounterData | |
544 // | |
545 // A CounterData corresponds to a simple counter. | |
546 class CounterData : public BitData { | |
547 protected: | |
548 enum { | |
549 count_off, | |
550 counter_cell_count | |
551 }; | |
552 public: | |
553 CounterData(DataLayout* layout) : BitData(layout) {} | |
554 | |
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555 virtual bool is_CounterData() const { return true; } |
0 | 556 |
557 static int static_cell_count() { | |
558 return counter_cell_count; | |
559 } | |
560 | |
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561 virtual int cell_count() const { |
0 | 562 return static_cell_count(); |
563 } | |
564 | |
565 // Direct accessor | |
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566 uint count() const { |
0 | 567 return uint_at(count_off); |
568 } | |
569 | |
570 // Code generation support | |
571 static ByteSize count_offset() { | |
572 return cell_offset(count_off); | |
573 } | |
574 static ByteSize counter_data_size() { | |
575 return cell_offset(counter_cell_count); | |
576 } | |
577 | |
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578 void set_count(uint count) { |
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579 set_uint_at(count_off, count); |
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580 } |
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581 |
0 | 582 #ifndef PRODUCT |
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583 void print_data_on(outputStream* st, const char* extra = NULL) const; |
0 | 584 #endif |
585 }; | |
586 | |
587 // JumpData | |
588 // | |
589 // A JumpData is used to access profiling information for a direct | |
590 // branch. It is a counter, used for counting the number of branches, | |
591 // plus a data displacement, used for realigning the data pointer to | |
592 // the corresponding target bci. | |
593 class JumpData : public ProfileData { | |
594 protected: | |
595 enum { | |
596 taken_off_set, | |
597 displacement_off_set, | |
598 jump_cell_count | |
599 }; | |
600 | |
601 void set_displacement(int displacement) { | |
602 set_int_at(displacement_off_set, displacement); | |
603 } | |
604 | |
605 public: | |
606 JumpData(DataLayout* layout) : ProfileData(layout) { | |
607 assert(layout->tag() == DataLayout::jump_data_tag || | |
608 layout->tag() == DataLayout::branch_data_tag, "wrong type"); | |
609 } | |
610 | |
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611 virtual bool is_JumpData() const { return true; } |
0 | 612 |
613 static int static_cell_count() { | |
614 return jump_cell_count; | |
615 } | |
616 | |
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617 virtual int cell_count() const { |
0 | 618 return static_cell_count(); |
619 } | |
620 | |
621 // Direct accessor | |
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622 uint taken() const { |
0 | 623 return uint_at(taken_off_set); |
624 } | |
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625 |
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626 void set_taken(uint cnt) { |
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627 set_uint_at(taken_off_set, cnt); |
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628 } |
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629 |
0 | 630 // Saturating counter |
631 uint inc_taken() { | |
632 uint cnt = taken() + 1; | |
633 // Did we wrap? Will compiler screw us?? | |
634 if (cnt == 0) cnt--; | |
635 set_uint_at(taken_off_set, cnt); | |
636 return cnt; | |
637 } | |
638 | |
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639 int displacement() const { |
0 | 640 return int_at(displacement_off_set); |
641 } | |
642 | |
643 // Code generation support | |
644 static ByteSize taken_offset() { | |
645 return cell_offset(taken_off_set); | |
646 } | |
647 | |
648 static ByteSize displacement_offset() { | |
649 return cell_offset(displacement_off_set); | |
650 } | |
651 | |
652 // Specific initialization. | |
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653 void post_initialize(BytecodeStream* stream, MethodData* mdo); |
0 | 654 |
655 #ifndef PRODUCT | |
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656 void print_data_on(outputStream* st, const char* extra = NULL) const; |
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657 #endif |
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658 }; |
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659 |
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660 // Entries in a ProfileData object to record types: it can either be |
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661 // none (no profile), unknown (conflicting profile data) or a klass if |
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662 // a single one is seen. Whether a null reference was seen is also |
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663 // recorded. No counter is associated with the type and a single type |
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664 // is tracked (unlike VirtualCallData). |
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665 class TypeEntries { |
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666 |
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667 public: |
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668 |
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669 // A single cell is used to record information for a type: |
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670 // - the cell is initialized to 0 |
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671 // - when a type is discovered it is stored in the cell |
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672 // - bit zero of the cell is used to record whether a null reference |
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673 // was encountered or not |
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674 // - bit 1 is set to record a conflict in the type information |
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675 |
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676 enum { |
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677 null_seen = 1, |
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678 type_mask = ~null_seen, |
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679 type_unknown = 2, |
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680 status_bits = null_seen | type_unknown, |
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681 type_klass_mask = ~status_bits |
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682 }; |
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683 |
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684 // what to initialize a cell to |
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685 static intptr_t type_none() { |
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686 return 0; |
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687 } |
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688 |
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689 // null seen = bit 0 set? |
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690 static bool was_null_seen(intptr_t v) { |
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691 return (v & null_seen) != 0; |
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692 } |
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|
693 |
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694 // conflicting type information = bit 1 set? |
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695 static bool is_type_unknown(intptr_t v) { |
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696 return (v & type_unknown) != 0; |
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|
697 } |
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|
698 |
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699 // not type information yet = all bits cleared, ignoring bit 0? |
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700 static bool is_type_none(intptr_t v) { |
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701 return (v & type_mask) == 0; |
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702 } |
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703 |
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704 // recorded type: cell without bit 0 and 1 |
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705 static intptr_t klass_part(intptr_t v) { |
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706 intptr_t r = v & type_klass_mask; |
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707 return r; |
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|
708 } |
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709 |
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710 // type recorded |
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711 static Klass* valid_klass(intptr_t k) { |
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712 if (!is_type_none(k) && |
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713 !is_type_unknown(k)) { |
13080 | 714 Klass* res = (Klass*)klass_part(k); |
715 assert(res != NULL, "invalid"); | |
716 return res; | |
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717 } else { |
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718 return NULL; |
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719 } |
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|
720 } |
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|
721 |
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722 static intptr_t with_status(intptr_t k, intptr_t in) { |
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723 return k | (in & status_bits); |
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|
724 } |
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|
725 |
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726 static intptr_t with_status(Klass* k, intptr_t in) { |
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727 return with_status((intptr_t)k, in); |
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|
728 } |
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|
729 |
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|
730 #ifndef PRODUCT |
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731 static void print_klass(outputStream* st, intptr_t k); |
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732 #endif |
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733 |
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734 // GC support |
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735 static bool is_loader_alive(BoolObjectClosure* is_alive_cl, intptr_t p); |
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|
736 |
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737 protected: |
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738 // ProfileData object these entries are part of |
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739 ProfileData* _pd; |
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740 // offset within the ProfileData object where the entries start |
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741 const int _base_off; |
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|
742 |
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743 TypeEntries(int base_off) |
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744 : _base_off(base_off), _pd(NULL) {} |
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|
745 |
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746 void set_intptr_at(int index, intptr_t value) { |
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747 _pd->set_intptr_at(index, value); |
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|
748 } |
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|
749 |
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750 intptr_t intptr_at(int index) const { |
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751 return _pd->intptr_at(index); |
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|
752 } |
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|
753 |
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|
754 public: |
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|
755 void set_profile_data(ProfileData* pd) { |
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|
756 _pd = pd; |
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|
757 } |
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|
758 }; |
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|
759 |
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|
760 // Type entries used for arguments passed at a call and parameters on |
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761 // method entry. 2 cells per entry: one for the type encoded as in |
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762 // TypeEntries and one initialized with the stack slot where the |
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|
763 // profiled object is to be found so that the interpreter can locate |
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|
764 // it quickly. |
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|
765 class TypeStackSlotEntries : public TypeEntries { |
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|
766 |
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|
767 private: |
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|
768 enum { |
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|
769 stack_slot_entry, |
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|
770 type_entry, |
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|
771 per_arg_cell_count |
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|
772 }; |
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|
773 |
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|
774 // offset of cell for stack slot for entry i within ProfileData object |
12882
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775 int stack_slot_offset(int i) const { |
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776 return _base_off + stack_slot_local_offset(i); |
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|
777 } |
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|
778 |
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|
779 protected: |
12882
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|
780 const int _number_of_entries; |
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|
781 |
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|
782 // offset of cell for type for entry i within ProfileData object |
12882
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783 int type_offset(int i) const { |
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|
784 return _base_off + type_local_offset(i); |
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|
785 } |
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|
786 |
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|
787 public: |
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|
788 |
12882
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|
789 TypeStackSlotEntries(int base_off, int nb_entries) |
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790 : TypeEntries(base_off), _number_of_entries(nb_entries) {} |
12875
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|
791 |
12962
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|
792 static int compute_cell_count(Symbol* signature, bool include_receiver, int max); |
12875
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|
793 |
12962
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|
794 void post_initialize(Symbol* signature, bool has_receiver, bool include_receiver); |
12875
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|
795 |
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|
796 // offset of cell for stack slot for entry i within this block of cells for a TypeStackSlotEntries |
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|
797 static int stack_slot_local_offset(int i) { |
12882
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798 return i * per_arg_cell_count + stack_slot_entry; |
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|
799 } |
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|
800 |
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|
801 // offset of cell for type for entry i within this block of cells for a TypeStackSlotEntries |
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|
802 static int type_local_offset(int i) { |
12882
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803 return i * per_arg_cell_count + type_entry; |
12875
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|
804 } |
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|
805 |
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|
806 // stack slot for entry i |
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|
807 uint stack_slot(int i) const { |
12882
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808 assert(i >= 0 && i < _number_of_entries, "oob"); |
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809 return _pd->uint_at(stack_slot_offset(i)); |
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|
810 } |
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|
811 |
d13d7aba8c12
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|
812 // set stack slot for entry i |
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|
813 void set_stack_slot(int i, uint num) { |
12882
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|
814 assert(i >= 0 && i < _number_of_entries, "oob"); |
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|
815 _pd->set_uint_at(stack_slot_offset(i), num); |
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|
816 } |
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|
817 |
d13d7aba8c12
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|
818 // type for entry i |
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|
819 intptr_t type(int i) const { |
12882
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|
820 assert(i >= 0 && i < _number_of_entries, "oob"); |
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|
821 return _pd->intptr_at(type_offset(i)); |
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|
822 } |
d13d7aba8c12
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|
823 |
d13d7aba8c12
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|
824 // set type for entry i |
d13d7aba8c12
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|
825 void set_type(int i, intptr_t k) { |
12882
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826 assert(i >= 0 && i < _number_of_entries, "oob"); |
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827 _pd->set_intptr_at(type_offset(i), k); |
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828 } |
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829 |
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830 static ByteSize per_arg_size() { |
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831 return in_ByteSize(per_arg_cell_count * DataLayout::cell_size); |
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832 } |
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833 |
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834 static int per_arg_count() { |
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835 return per_arg_cell_count ; |
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836 } |
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837 |
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838 // GC support |
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839 void clean_weak_klass_links(BoolObjectClosure* is_alive_closure); |
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840 |
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841 #ifndef PRODUCT |
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842 void print_data_on(outputStream* st) const; |
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843 #endif |
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844 }; |
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845 |
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846 // Type entry used for return from a call. A single cell to record the |
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847 // type. |
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848 class ReturnTypeEntry : public TypeEntries { |
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849 |
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850 private: |
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851 enum { |
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852 cell_count = 1 |
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853 }; |
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854 |
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855 public: |
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856 ReturnTypeEntry(int base_off) |
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857 : TypeEntries(base_off) {} |
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858 |
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859 void post_initialize() { |
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860 set_type(type_none()); |
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861 } |
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862 |
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863 intptr_t type() const { |
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864 return _pd->intptr_at(_base_off); |
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865 } |
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866 |
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867 void set_type(intptr_t k) { |
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868 _pd->set_intptr_at(_base_off, k); |
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869 } |
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870 |
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871 static int static_cell_count() { |
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872 return cell_count; |
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873 } |
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874 |
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875 static ByteSize size() { |
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876 return in_ByteSize(cell_count * DataLayout::cell_size); |
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877 } |
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878 |
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879 ByteSize type_offset() { |
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880 return DataLayout::cell_offset(_base_off); |
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881 } |
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882 |
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883 // GC support |
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884 void clean_weak_klass_links(BoolObjectClosure* is_alive_closure); |
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885 |
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886 #ifndef PRODUCT |
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887 void print_data_on(outputStream* st) const; |
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888 #endif |
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889 }; |
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890 |
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891 // Entries to collect type information at a call: contains arguments |
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892 // (TypeStackSlotEntries), a return type (ReturnTypeEntry) and a |
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893 // number of cells. Because the number of cells for the return type is |
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894 // smaller than the number of cells for the type of an arguments, the |
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895 // number of cells is used to tell how many arguments are profiled and |
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896 // whether a return value is profiled. See has_arguments() and |
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897 // has_return(). |
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898 class TypeEntriesAtCall { |
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899 private: |
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900 static int stack_slot_local_offset(int i) { |
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901 return header_cell_count() + TypeStackSlotEntries::stack_slot_local_offset(i); |
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902 } |
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903 |
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904 static int argument_type_local_offset(int i) { |
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905 return header_cell_count() + TypeStackSlotEntries::type_local_offset(i);; |
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906 } |
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907 |
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908 public: |
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909 |
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910 static int header_cell_count() { |
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911 return 1; |
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912 } |
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913 |
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914 static int cell_count_local_offset() { |
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915 return 0; |
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916 } |
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917 |
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918 static int compute_cell_count(BytecodeStream* stream); |
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919 |
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920 static void initialize(DataLayout* dl, int base, int cell_count) { |
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921 int off = base + cell_count_local_offset(); |
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922 dl->set_cell_at(off, cell_count - base - header_cell_count()); |
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923 } |
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924 |
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925 static bool arguments_profiling_enabled(); |
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926 static bool return_profiling_enabled(); |
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927 |
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928 // Code generation support |
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929 static ByteSize cell_count_offset() { |
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930 return in_ByteSize(cell_count_local_offset() * DataLayout::cell_size); |
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931 } |
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932 |
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933 static ByteSize args_data_offset() { |
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934 return in_ByteSize(header_cell_count() * DataLayout::cell_size); |
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935 } |
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936 |
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937 static ByteSize stack_slot_offset(int i) { |
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938 return in_ByteSize(stack_slot_local_offset(i) * DataLayout::cell_size); |
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939 } |
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|
940 |
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941 static ByteSize argument_type_offset(int i) { |
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942 return in_ByteSize(argument_type_local_offset(i) * DataLayout::cell_size); |
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943 } |
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944 }; |
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945 |
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946 // CallTypeData |
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947 // |
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948 // A CallTypeData is used to access profiling information about a non |
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949 // virtual call for which we collect type information about arguments |
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950 // and return value. |
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951 class CallTypeData : public CounterData { |
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952 private: |
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953 // entries for arguments if any |
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954 TypeStackSlotEntries _args; |
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955 // entry for return type if any |
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956 ReturnTypeEntry _ret; |
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|
957 |
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958 int cell_count_global_offset() const { |
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959 return CounterData::static_cell_count() + TypeEntriesAtCall::cell_count_local_offset(); |
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960 } |
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|
961 |
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962 // number of cells not counting the header |
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963 int cell_count_no_header() const { |
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964 return uint_at(cell_count_global_offset()); |
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965 } |
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966 |
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967 void check_number_of_arguments(int total) { |
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968 assert(number_of_arguments() == total, "should be set in DataLayout::initialize"); |
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969 } |
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970 |
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971 public: |
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972 CallTypeData(DataLayout* layout) : |
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973 CounterData(layout), |
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974 _args(CounterData::static_cell_count()+TypeEntriesAtCall::header_cell_count(), number_of_arguments()), |
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975 _ret(cell_count() - ReturnTypeEntry::static_cell_count()) |
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976 { |
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977 assert(layout->tag() == DataLayout::call_type_data_tag, "wrong type"); |
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978 // Some compilers (VC++) don't want this passed in member initialization list |
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979 _args.set_profile_data(this); |
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980 _ret.set_profile_data(this); |
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981 } |
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982 |
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983 const TypeStackSlotEntries* args() const { |
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984 assert(has_arguments(), "no profiling of arguments"); |
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985 return &_args; |
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986 } |
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987 |
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988 const ReturnTypeEntry* ret() const { |
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989 assert(has_return(), "no profiling of return value"); |
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990 return &_ret; |
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991 } |
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992 |
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993 virtual bool is_CallTypeData() const { return true; } |
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994 |
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995 static int static_cell_count() { |
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996 return -1; |
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997 } |
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998 |
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999 static int compute_cell_count(BytecodeStream* stream) { |
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1000 return CounterData::static_cell_count() + TypeEntriesAtCall::compute_cell_count(stream); |
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1001 } |
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1002 |
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1003 static void initialize(DataLayout* dl, int cell_count) { |
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1004 TypeEntriesAtCall::initialize(dl, CounterData::static_cell_count(), cell_count); |
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1005 } |
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1006 |
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1007 virtual void post_initialize(BytecodeStream* stream, MethodData* mdo); |
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1008 |
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1009 virtual int cell_count() const { |
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1010 return CounterData::static_cell_count() + |
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1011 TypeEntriesAtCall::header_cell_count() + |
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1012 int_at_unchecked(cell_count_global_offset()); |
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1013 } |
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1014 |
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1015 int number_of_arguments() const { |
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1016 return cell_count_no_header() / TypeStackSlotEntries::per_arg_count(); |
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1017 } |
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1018 |
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1019 void set_argument_type(int i, Klass* k) { |
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1020 assert(has_arguments(), "no arguments!"); |
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1021 intptr_t current = _args.type(i); |
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1022 _args.set_type(i, TypeEntries::with_status(k, current)); |
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1023 } |
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1024 |
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1025 void set_return_type(Klass* k) { |
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1026 assert(has_return(), "no return!"); |
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1027 intptr_t current = _ret.type(); |
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1028 _ret.set_type(TypeEntries::with_status(k, current)); |
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1029 } |
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1030 |
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1031 // An entry for a return value takes less space than an entry for an |
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1032 // argument so if the number of cells exceeds the number of cells |
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1033 // needed for an argument, this object contains type information for |
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1034 // at least one argument. |
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1035 bool has_arguments() const { |
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1036 bool res = cell_count_no_header() >= TypeStackSlotEntries::per_arg_count(); |
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1037 assert (!res || TypeEntriesAtCall::arguments_profiling_enabled(), "no profiling of arguments"); |
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1038 return res; |
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1039 } |
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1040 |
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1041 // An entry for a return value takes less space than an entry for an |
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1042 // argument, so if the remainder of the number of cells divided by |
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1043 // the number of cells for an argument is not null, a return value |
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1044 // is profiled in this object. |
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1045 bool has_return() const { |
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1046 bool res = (cell_count_no_header() % TypeStackSlotEntries::per_arg_count()) != 0; |
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1047 assert (!res || TypeEntriesAtCall::return_profiling_enabled(), "no profiling of return values"); |
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1048 return res; |
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1049 } |
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1050 |
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1051 // Code generation support |
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1052 static ByteSize args_data_offset() { |
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1053 return cell_offset(CounterData::static_cell_count()) + TypeEntriesAtCall::args_data_offset(); |
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1054 } |
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1055 |
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1056 // GC support |
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1057 virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure) { |
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1058 if (has_arguments()) { |
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1059 _args.clean_weak_klass_links(is_alive_closure); |
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1060 } |
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1061 if (has_return()) { |
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1062 _ret.clean_weak_klass_links(is_alive_closure); |
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1063 } |
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1064 } |
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1065 |
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1066 #ifndef PRODUCT |
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1067 virtual void print_data_on(outputStream* st, const char* extra = NULL) const; |
0 | 1068 #endif |
1069 }; | |
1070 | |
1071 // ReceiverTypeData | |
1072 // | |
1073 // A ReceiverTypeData is used to access profiling information about a | |
1074 // dynamic type check. It consists of a counter which counts the total times | |
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1075 // that the check is reached, and a series of (Klass*, count) pairs |
0 | 1076 // which are used to store a type profile for the receiver of the check. |
1077 class ReceiverTypeData : public CounterData { | |
1078 protected: | |
1079 enum { | |
1080 receiver0_offset = counter_cell_count, | |
1081 count0_offset, | |
1082 receiver_type_row_cell_count = (count0_offset + 1) - receiver0_offset | |
1083 }; | |
1084 | |
1085 public: | |
1086 ReceiverTypeData(DataLayout* layout) : CounterData(layout) { | |
1087 assert(layout->tag() == DataLayout::receiver_type_data_tag || | |
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1088 layout->tag() == DataLayout::virtual_call_data_tag || |
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1089 layout->tag() == DataLayout::virtual_call_type_data_tag, "wrong type"); |
0 | 1090 } |
1091 | |
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1092 virtual bool is_ReceiverTypeData() const { return true; } |
0 | 1093 |
1094 static int static_cell_count() { | |
1095 return counter_cell_count + (uint) TypeProfileWidth * receiver_type_row_cell_count; | |
1096 } | |
1097 | |
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1098 virtual int cell_count() const { |
0 | 1099 return static_cell_count(); |
1100 } | |
1101 | |
1102 // Direct accessors | |
1103 static uint row_limit() { | |
1104 return TypeProfileWidth; | |
1105 } | |
1106 static int receiver_cell_index(uint row) { | |
1107 return receiver0_offset + row * receiver_type_row_cell_count; | |
1108 } | |
1109 static int receiver_count_cell_index(uint row) { | |
1110 return count0_offset + row * receiver_type_row_cell_count; | |
1111 } | |
1112 | |
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1113 Klass* receiver(uint row) const { |
0 | 1114 assert(row < row_limit(), "oob"); |
1115 | |
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1116 Klass* recv = (Klass*)intptr_at(receiver_cell_index(row)); |
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1117 assert(recv == NULL || recv->is_klass(), "wrong type"); |
0 | 1118 return recv; |
1119 } | |
1120 | |
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1121 void set_receiver(uint row, Klass* k) { |
941 | 1122 assert((uint)row < row_limit(), "oob"); |
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1123 set_intptr_at(receiver_cell_index(row), (uintptr_t)k); |
941 | 1124 } |
1125 | |
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1126 uint receiver_count(uint row) const { |
0 | 1127 assert(row < row_limit(), "oob"); |
1128 return uint_at(receiver_count_cell_index(row)); | |
1129 } | |
1130 | |
941 | 1131 void set_receiver_count(uint row, uint count) { |
1132 assert(row < row_limit(), "oob"); | |
1133 set_uint_at(receiver_count_cell_index(row), count); | |
1134 } | |
1135 | |
1136 void clear_row(uint row) { | |
1137 assert(row < row_limit(), "oob"); | |
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1138 // Clear total count - indicator of polymorphic call site. |
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1139 // The site may look like as monomorphic after that but |
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1140 // it allow to have more accurate profiling information because |
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1141 // there was execution phase change since klasses were unloaded. |
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1142 // If the site is still polymorphic then MDO will be updated |
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1143 // to reflect it. But it could be the case that the site becomes |
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1144 // only bimorphic. Then keeping total count not 0 will be wrong. |
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1145 // Even if we use monomorphic (when it is not) for compilation |
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1146 // we will only have trap, deoptimization and recompile again |
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1147 // with updated MDO after executing method in Interpreter. |
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1148 // An additional receiver will be recorded in the cleaned row |
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1149 // during next call execution. |
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1150 // |
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1151 // Note: our profiling logic works with empty rows in any slot. |
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1152 // We do sorting a profiling info (ciCallProfile) for compilation. |
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1153 // |
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1154 set_count(0); |
941 | 1155 set_receiver(row, NULL); |
1156 set_receiver_count(row, 0); | |
1157 } | |
1158 | |
0 | 1159 // Code generation support |
1160 static ByteSize receiver_offset(uint row) { | |
1161 return cell_offset(receiver_cell_index(row)); | |
1162 } | |
1163 static ByteSize receiver_count_offset(uint row) { | |
1164 return cell_offset(receiver_count_cell_index(row)); | |
1165 } | |
1166 static ByteSize receiver_type_data_size() { | |
1167 return cell_offset(static_cell_count()); | |
1168 } | |
1169 | |
1170 // GC support | |
6725
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1171 virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure); |
0 | 1172 |
1173 #ifndef PRODUCT | |
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1174 void print_receiver_data_on(outputStream* st) const; |
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1175 void print_data_on(outputStream* st, const char* extra = NULL) const; |
0 | 1176 #endif |
1177 }; | |
1178 | |
1179 // VirtualCallData | |
1180 // | |
1181 // A VirtualCallData is used to access profiling information about a | |
1182 // virtual call. For now, it has nothing more than a ReceiverTypeData. | |
1183 class VirtualCallData : public ReceiverTypeData { | |
1184 public: | |
1185 VirtualCallData(DataLayout* layout) : ReceiverTypeData(layout) { | |
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1186 assert(layout->tag() == DataLayout::virtual_call_data_tag || |
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1187 layout->tag() == DataLayout::virtual_call_type_data_tag, "wrong type"); |
0 | 1188 } |
1189 | |
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1190 virtual bool is_VirtualCallData() const { return true; } |
0 | 1191 |
1192 static int static_cell_count() { | |
1193 // At this point we could add more profile state, e.g., for arguments. | |
1194 // But for now it's the same size as the base record type. | |
1195 return ReceiverTypeData::static_cell_count(); | |
1196 } | |
1197 | |
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1198 virtual int cell_count() const { |
0 | 1199 return static_cell_count(); |
1200 } | |
1201 | |
1202 // Direct accessors | |
1203 static ByteSize virtual_call_data_size() { | |
1204 return cell_offset(static_cell_count()); | |
1205 } | |
1206 | |
1207 #ifndef PRODUCT | |
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1208 void print_data_on(outputStream* st, const char* extra = NULL) const; |
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1209 #endif |
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1210 }; |
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1211 |
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1212 // VirtualCallTypeData |
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1213 // |
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1214 // A VirtualCallTypeData is used to access profiling information about |
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1215 // a virtual call for which we collect type information about |
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1216 // arguments and return value. |
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1217 class VirtualCallTypeData : public VirtualCallData { |
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1218 private: |
12882
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1219 // entries for arguments if any |
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1220 TypeStackSlotEntries _args; |
12882
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1221 // entry for return type if any |
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1222 ReturnTypeEntry _ret; |
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1223 |
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1224 int cell_count_global_offset() const { |
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1225 return VirtualCallData::static_cell_count() + TypeEntriesAtCall::cell_count_local_offset(); |
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1226 } |
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1227 |
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1228 // number of cells not counting the header |
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1229 int cell_count_no_header() const { |
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1230 return uint_at(cell_count_global_offset()); |
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1231 } |
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1232 |
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1233 void check_number_of_arguments(int total) { |
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1234 assert(number_of_arguments() == total, "should be set in DataLayout::initialize"); |
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1235 } |
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1236 |
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1237 public: |
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1238 VirtualCallTypeData(DataLayout* layout) : |
12882
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1239 VirtualCallData(layout), |
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1240 _args(VirtualCallData::static_cell_count()+TypeEntriesAtCall::header_cell_count(), number_of_arguments()), |
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1241 _ret(cell_count() - ReturnTypeEntry::static_cell_count()) |
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1242 { |
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1243 assert(layout->tag() == DataLayout::virtual_call_type_data_tag, "wrong type"); |
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1244 // Some compilers (VC++) don't want this passed in member initialization list |
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1245 _args.set_profile_data(this); |
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1246 _ret.set_profile_data(this); |
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1247 } |
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1248 |
12882
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1249 const TypeStackSlotEntries* args() const { |
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1250 assert(has_arguments(), "no profiling of arguments"); |
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1251 return &_args; |
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1252 } |
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1253 |
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1254 const ReturnTypeEntry* ret() const { |
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1255 assert(has_return(), "no profiling of return value"); |
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1256 return &_ret; |
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1257 } |
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1258 |
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1259 virtual bool is_VirtualCallTypeData() const { return true; } |
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1260 |
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1261 static int static_cell_count() { |
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1262 return -1; |
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1263 } |
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1264 |
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1265 static int compute_cell_count(BytecodeStream* stream) { |
12882
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1266 return VirtualCallData::static_cell_count() + TypeEntriesAtCall::compute_cell_count(stream); |
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1267 } |
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1268 |
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1269 static void initialize(DataLayout* dl, int cell_count) { |
12882
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1270 TypeEntriesAtCall::initialize(dl, VirtualCallData::static_cell_count(), cell_count); |
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1271 } |
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1272 |
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1273 virtual void post_initialize(BytecodeStream* stream, MethodData* mdo); |
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1274 |
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1275 virtual int cell_count() const { |
12882
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1276 return VirtualCallData::static_cell_count() + |
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1277 TypeEntriesAtCall::header_cell_count() + |
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1278 int_at_unchecked(cell_count_global_offset()); |
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1279 } |
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1280 |
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1281 int number_of_arguments() const { |
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1282 return cell_count_no_header() / TypeStackSlotEntries::per_arg_count(); |
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1283 } |
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1284 |
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1285 void set_argument_type(int i, Klass* k) { |
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1286 assert(has_arguments(), "no arguments!"); |
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1287 intptr_t current = _args.type(i); |
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1288 _args.set_type(i, TypeEntries::with_status(k, current)); |
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1289 } |
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1290 |
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1291 void set_return_type(Klass* k) { |
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1292 assert(has_return(), "no return!"); |
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1293 intptr_t current = _ret.type(); |
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1294 _ret.set_type(TypeEntries::with_status(k, current)); |
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1295 } |
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1296 |
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1297 // An entry for a return value takes less space than an entry for an |
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1298 // argument, so if the remainder of the number of cells divided by |
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1299 // the number of cells for an argument is not null, a return value |
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1300 // is profiled in this object. |
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1301 bool has_return() const { |
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1302 bool res = (cell_count_no_header() % TypeStackSlotEntries::per_arg_count()) != 0; |
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1303 assert (!res || TypeEntriesAtCall::return_profiling_enabled(), "no profiling of return values"); |
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1304 return res; |
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1305 } |
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1306 |
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1307 // An entry for a return value takes less space than an entry for an |
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1308 // argument so if the number of cells exceeds the number of cells |
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1309 // needed for an argument, this object contains type information for |
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1310 // at least one argument. |
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1311 bool has_arguments() const { |
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1312 bool res = cell_count_no_header() >= TypeStackSlotEntries::per_arg_count(); |
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1313 assert (!res || TypeEntriesAtCall::arguments_profiling_enabled(), "no profiling of arguments"); |
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1314 return res; |
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1315 } |
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1316 |
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1317 // Code generation support |
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1318 static ByteSize args_data_offset() { |
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1319 return cell_offset(VirtualCallData::static_cell_count()) + TypeEntriesAtCall::args_data_offset(); |
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1320 } |
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1321 |
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1322 // GC support |
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1323 virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure) { |
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1324 ReceiverTypeData::clean_weak_klass_links(is_alive_closure); |
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1325 if (has_arguments()) { |
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1326 _args.clean_weak_klass_links(is_alive_closure); |
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1327 } |
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1328 if (has_return()) { |
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1329 _ret.clean_weak_klass_links(is_alive_closure); |
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1330 } |
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1331 } |
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1332 |
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1333 #ifndef PRODUCT |
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1334 virtual void print_data_on(outputStream* st, const char* extra = NULL) const; |
0 | 1335 #endif |
1336 }; | |
1337 | |
1338 // RetData | |
1339 // | |
1340 // A RetData is used to access profiling information for a ret bytecode. | |
1341 // It is composed of a count of the number of times that the ret has | |
1342 // been executed, followed by a series of triples of the form | |
1343 // (bci, count, di) which count the number of times that some bci was the | |
1344 // target of the ret and cache a corresponding data displacement. | |
1345 class RetData : public CounterData { | |
1346 protected: | |
1347 enum { | |
1348 bci0_offset = counter_cell_count, | |
1349 count0_offset, | |
1350 displacement0_offset, | |
1351 ret_row_cell_count = (displacement0_offset + 1) - bci0_offset | |
1352 }; | |
1353 | |
1354 void set_bci(uint row, int bci) { | |
1355 assert((uint)row < row_limit(), "oob"); | |
1356 set_int_at(bci0_offset + row * ret_row_cell_count, bci); | |
1357 } | |
1358 void release_set_bci(uint row, int bci) { | |
1359 assert((uint)row < row_limit(), "oob"); | |
1360 // 'release' when setting the bci acts as a valid flag for other | |
1361 // threads wrt bci_count and bci_displacement. | |
1362 release_set_int_at(bci0_offset + row * ret_row_cell_count, bci); | |
1363 } | |
1364 void set_bci_count(uint row, uint count) { | |
1365 assert((uint)row < row_limit(), "oob"); | |
1366 set_uint_at(count0_offset + row * ret_row_cell_count, count); | |
1367 } | |
1368 void set_bci_displacement(uint row, int disp) { | |
1369 set_int_at(displacement0_offset + row * ret_row_cell_count, disp); | |
1370 } | |
1371 | |
1372 public: | |
1373 RetData(DataLayout* layout) : CounterData(layout) { | |
1374 assert(layout->tag() == DataLayout::ret_data_tag, "wrong type"); | |
1375 } | |
1376 | |
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1377 virtual bool is_RetData() const { return true; } |
0 | 1378 |
1379 enum { | |
1380 no_bci = -1 // value of bci when bci1/2 are not in use. | |
1381 }; | |
1382 | |
1383 static int static_cell_count() { | |
1384 return counter_cell_count + (uint) BciProfileWidth * ret_row_cell_count; | |
1385 } | |
1386 | |
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1387 virtual int cell_count() const { |
0 | 1388 return static_cell_count(); |
1389 } | |
1390 | |
1391 static uint row_limit() { | |
1392 return BciProfileWidth; | |
1393 } | |
1394 static int bci_cell_index(uint row) { | |
1395 return bci0_offset + row * ret_row_cell_count; | |
1396 } | |
1397 static int bci_count_cell_index(uint row) { | |
1398 return count0_offset + row * ret_row_cell_count; | |
1399 } | |
1400 static int bci_displacement_cell_index(uint row) { | |
1401 return displacement0_offset + row * ret_row_cell_count; | |
1402 } | |
1403 | |
1404 // Direct accessors | |
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1405 int bci(uint row) const { |
0 | 1406 return int_at(bci_cell_index(row)); |
1407 } | |
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1408 uint bci_count(uint row) const { |
0 | 1409 return uint_at(bci_count_cell_index(row)); |
1410 } | |
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1411 int bci_displacement(uint row) const { |
0 | 1412 return int_at(bci_displacement_cell_index(row)); |
1413 } | |
1414 | |
1415 // Interpreter Runtime support | |
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1416 address fixup_ret(int return_bci, MethodData* mdo); |
0 | 1417 |
1418 // Code generation support | |
1419 static ByteSize bci_offset(uint row) { | |
1420 return cell_offset(bci_cell_index(row)); | |
1421 } | |
1422 static ByteSize bci_count_offset(uint row) { | |
1423 return cell_offset(bci_count_cell_index(row)); | |
1424 } | |
1425 static ByteSize bci_displacement_offset(uint row) { | |
1426 return cell_offset(bci_displacement_cell_index(row)); | |
1427 } | |
1428 | |
1429 // Specific initialization. | |
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1430 void post_initialize(BytecodeStream* stream, MethodData* mdo); |
0 | 1431 |
1432 #ifndef PRODUCT | |
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1433 void print_data_on(outputStream* st, const char* extra = NULL) const; |
0 | 1434 #endif |
1435 }; | |
1436 | |
1437 // BranchData | |
1438 // | |
1439 // A BranchData is used to access profiling data for a two-way branch. | |
1440 // It consists of taken and not_taken counts as well as a data displacement | |
1441 // for the taken case. | |
1442 class BranchData : public JumpData { | |
1443 protected: | |
1444 enum { | |
1445 not_taken_off_set = jump_cell_count, | |
1446 branch_cell_count | |
1447 }; | |
1448 | |
1449 void set_displacement(int displacement) { | |
1450 set_int_at(displacement_off_set, displacement); | |
1451 } | |
1452 | |
1453 public: | |
1454 BranchData(DataLayout* layout) : JumpData(layout) { | |
1455 assert(layout->tag() == DataLayout::branch_data_tag, "wrong type"); | |
1456 } | |
1457 | |
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1458 virtual bool is_BranchData() const { return true; } |
0 | 1459 |
1460 static int static_cell_count() { | |
1461 return branch_cell_count; | |
1462 } | |
1463 | |
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1464 virtual int cell_count() const { |
0 | 1465 return static_cell_count(); |
1466 } | |
1467 | |
1468 // Direct accessor | |
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1469 uint not_taken() const { |
0 | 1470 return uint_at(not_taken_off_set); |
1471 } | |
1472 | |
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1473 void set_not_taken(uint cnt) { |
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1474 set_uint_at(not_taken_off_set, cnt); |
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1475 } |
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1476 |
0 | 1477 uint inc_not_taken() { |
1478 uint cnt = not_taken() + 1; | |
1479 // Did we wrap? Will compiler screw us?? | |
1480 if (cnt == 0) cnt--; | |
1481 set_uint_at(not_taken_off_set, cnt); | |
1482 return cnt; | |
1483 } | |
1484 | |
1485 // Code generation support | |
1486 static ByteSize not_taken_offset() { | |
1487 return cell_offset(not_taken_off_set); | |
1488 } | |
1489 static ByteSize branch_data_size() { | |
1490 return cell_offset(branch_cell_count); | |
1491 } | |
1492 | |
1493 // Specific initialization. | |
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1494 void post_initialize(BytecodeStream* stream, MethodData* mdo); |
0 | 1495 |
1496 #ifndef PRODUCT | |
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1497 void print_data_on(outputStream* st, const char* extra = NULL) const; |
0 | 1498 #endif |
1499 }; | |
1500 | |
1501 // ArrayData | |
1502 // | |
1503 // A ArrayData is a base class for accessing profiling data which does | |
1504 // not have a statically known size. It consists of an array length | |
1505 // and an array start. | |
1506 class ArrayData : public ProfileData { | |
1507 protected: | |
1508 friend class DataLayout; | |
1509 | |
1510 enum { | |
1511 array_len_off_set, | |
1512 array_start_off_set | |
1513 }; | |
1514 | |
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1515 uint array_uint_at(int index) const { |
0 | 1516 int aindex = index + array_start_off_set; |
1517 return uint_at(aindex); | |
1518 } | |
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1519 int array_int_at(int index) const { |
0 | 1520 int aindex = index + array_start_off_set; |
1521 return int_at(aindex); | |
1522 } | |
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1523 oop array_oop_at(int index) const { |
0 | 1524 int aindex = index + array_start_off_set; |
1525 return oop_at(aindex); | |
1526 } | |
1527 void array_set_int_at(int index, int value) { | |
1528 int aindex = index + array_start_off_set; | |
1529 set_int_at(aindex, value); | |
1530 } | |
1531 | |
1532 // Code generation support for subclasses. | |
1533 static ByteSize array_element_offset(int index) { | |
1534 return cell_offset(array_start_off_set + index); | |
1535 } | |
1536 | |
1537 public: | |
1538 ArrayData(DataLayout* layout) : ProfileData(layout) {} | |
1539 | |
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1540 virtual bool is_ArrayData() const { return true; } |
0 | 1541 |
1542 static int static_cell_count() { | |
1543 return -1; | |
1544 } | |
1545 | |
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1546 int array_len() const { |
0 | 1547 return int_at_unchecked(array_len_off_set); |
1548 } | |
1549 | |
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1550 virtual int cell_count() const { |
0 | 1551 return array_len() + 1; |
1552 } | |
1553 | |
1554 // Code generation support | |
1555 static ByteSize array_len_offset() { | |
1556 return cell_offset(array_len_off_set); | |
1557 } | |
1558 static ByteSize array_start_offset() { | |
1559 return cell_offset(array_start_off_set); | |
1560 } | |
1561 }; | |
1562 | |
1563 // MultiBranchData | |
1564 // | |
1565 // A MultiBranchData is used to access profiling information for | |
1566 // a multi-way branch (*switch bytecodes). It consists of a series | |
1567 // of (count, displacement) pairs, which count the number of times each | |
1568 // case was taken and specify the data displacment for each branch target. | |
1569 class MultiBranchData : public ArrayData { | |
1570 protected: | |
1571 enum { | |
1572 default_count_off_set, | |
1573 default_disaplacement_off_set, | |
1574 case_array_start | |
1575 }; | |
1576 enum { | |
1577 relative_count_off_set, | |
1578 relative_displacement_off_set, | |
1579 per_case_cell_count | |
1580 }; | |
1581 | |
1582 void set_default_displacement(int displacement) { | |
1583 array_set_int_at(default_disaplacement_off_set, displacement); | |
1584 } | |
1585 void set_displacement_at(int index, int displacement) { | |
1586 array_set_int_at(case_array_start + | |
1587 index * per_case_cell_count + | |
1588 relative_displacement_off_set, | |
1589 displacement); | |
1590 } | |
1591 | |
1592 public: | |
1593 MultiBranchData(DataLayout* layout) : ArrayData(layout) { | |
1594 assert(layout->tag() == DataLayout::multi_branch_data_tag, "wrong type"); | |
1595 } | |
1596 | |
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1597 virtual bool is_MultiBranchData() const { return true; } |
0 | 1598 |
1599 static int compute_cell_count(BytecodeStream* stream); | |
1600 | |
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1601 int number_of_cases() const { |
0 | 1602 int alen = array_len() - 2; // get rid of default case here. |
1603 assert(alen % per_case_cell_count == 0, "must be even"); | |
1604 return (alen / per_case_cell_count); | |
1605 } | |
1606 | |
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1607 uint default_count() const { |
0 | 1608 return array_uint_at(default_count_off_set); |
1609 } | |
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1610 int default_displacement() const { |
0 | 1611 return array_int_at(default_disaplacement_off_set); |
1612 } | |
1613 | |
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1614 uint count_at(int index) const { |
0 | 1615 return array_uint_at(case_array_start + |
1616 index * per_case_cell_count + | |
1617 relative_count_off_set); | |
1618 } | |
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1619 int displacement_at(int index) const { |
0 | 1620 return array_int_at(case_array_start + |
1621 index * per_case_cell_count + | |
1622 relative_displacement_off_set); | |
1623 } | |
1624 | |
1625 // Code generation support | |
1626 static ByteSize default_count_offset() { | |
1627 return array_element_offset(default_count_off_set); | |
1628 } | |
1629 static ByteSize default_displacement_offset() { | |
1630 return array_element_offset(default_disaplacement_off_set); | |
1631 } | |
1632 static ByteSize case_count_offset(int index) { | |
1633 return case_array_offset() + | |
1634 (per_case_size() * index) + | |
1635 relative_count_offset(); | |
1636 } | |
1637 static ByteSize case_array_offset() { | |
1638 return array_element_offset(case_array_start); | |
1639 } | |
1640 static ByteSize per_case_size() { | |
1641 return in_ByteSize(per_case_cell_count) * cell_size; | |
1642 } | |
1643 static ByteSize relative_count_offset() { | |
1644 return in_ByteSize(relative_count_off_set) * cell_size; | |
1645 } | |
1646 static ByteSize relative_displacement_offset() { | |
1647 return in_ByteSize(relative_displacement_off_set) * cell_size; | |
1648 } | |
1649 | |
1650 // Specific initialization. | |
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1651 void post_initialize(BytecodeStream* stream, MethodData* mdo); |
0 | 1652 |
1653 #ifndef PRODUCT | |
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1654 void print_data_on(outputStream* st, const char* extra = NULL) const; |
0 | 1655 #endif |
1656 }; | |
1657 | |
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1658 class ArgInfoData : public ArrayData { |
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1659 |
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1660 public: |
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1661 ArgInfoData(DataLayout* layout) : ArrayData(layout) { |
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1662 assert(layout->tag() == DataLayout::arg_info_data_tag, "wrong type"); |
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1663 } |
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diff
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|
1664 |
12875
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12316
diff
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|
1665 virtual bool is_ArgInfoData() const { return true; } |
45
48a3fa21394b
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kvn
parents:
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diff
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|
1666 |
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0
diff
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|
1667 |
12875
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12316
diff
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|
1668 int number_of_args() const { |
45
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kvn
parents:
0
diff
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|
1669 return array_len(); |
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parents:
0
diff
changeset
|
1670 } |
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0
diff
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|
1671 |
12875
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12316
diff
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|
1672 uint arg_modified(int arg) const { |
45
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6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
0
diff
changeset
|
1673 return array_uint_at(arg); |
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kvn
parents:
0
diff
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|
1674 } |
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kvn
parents:
0
diff
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|
1675 |
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kvn
parents:
0
diff
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|
1676 void set_arg_modified(int arg, uint val) { |
48a3fa21394b
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
0
diff
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|
1677 array_set_int_at(arg, val); |
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kvn
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0
diff
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|
1678 } |
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0
diff
changeset
|
1679 |
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kvn
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0
diff
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|
1680 #ifndef PRODUCT |
17728
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|
1681 void print_data_on(outputStream* st, const char* extra = NULL) const; |
45
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diff
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|
1682 #endif |
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diff
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|
1683 }; |
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diff
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|
1684 |
12962
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|
1685 // ParametersTypeData |
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|
1686 // |
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|
1687 // 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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12882
diff
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|
1688 // types of parameters to a method |
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diff
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|
1689 class ParametersTypeData : public ArrayData { |
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8026251: New type profiling points: parameters to methods
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diff
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|
1690 |
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diff
changeset
|
1691 private: |
5ccbab1c69f3
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|
1692 TypeStackSlotEntries _parameters; |
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|
1693 |
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8026251: New type profiling points: parameters to methods
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|
1694 static int stack_slot_local_offset(int i) { |
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|
1695 assert_profiling_enabled(); |
5ccbab1c69f3
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|
1696 return array_start_off_set + TypeStackSlotEntries::stack_slot_local_offset(i); |
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8026251: New type profiling points: parameters to methods
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|
1697 } |
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12882
diff
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|
1698 |
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diff
changeset
|
1699 static int type_local_offset(int i) { |
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12882
diff
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|
1700 assert_profiling_enabled(); |
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|
1701 return array_start_off_set + TypeStackSlotEntries::type_local_offset(i); |
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|
1702 } |
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diff
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|
1703 |
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8026251: New type profiling points: parameters to methods
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diff
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|
1704 static bool profiling_enabled(); |
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8026251: New type profiling points: parameters to methods
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diff
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|
1705 static void assert_profiling_enabled() { |
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12882
diff
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|
1706 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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diff
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|
1707 } |
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diff
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|
1708 |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
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diff
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|
1709 public: |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
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diff
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|
1710 ParametersTypeData(DataLayout* layout) : ArrayData(layout), _parameters(1, number_of_parameters()) { |
5ccbab1c69f3
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parents:
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|
1711 assert(layout->tag() == DataLayout::parameters_type_data_tag, "wrong type"); |
5ccbab1c69f3
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parents:
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|
1712 // Some compilers (VC++) don't want this passed in member initialization list |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
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parents:
12882
diff
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|
1713 _parameters.set_profile_data(this); |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
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parents:
12882
diff
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|
1714 } |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
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parents:
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diff
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|
1715 |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
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12882
diff
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|
1716 static int compute_cell_count(Method* m); |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
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diff
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|
1717 |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
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|
1718 virtual bool is_ParametersTypeData() const { return true; } |
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8026251: New type profiling points: parameters to methods
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|
1719 |
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diff
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|
1720 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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|
1721 |
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8026251: New type profiling points: parameters to methods
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diff
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|
1722 int number_of_parameters() const { |
5ccbab1c69f3
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|
1723 return array_len() / TypeStackSlotEntries::per_arg_count(); |
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8026251: New type profiling points: parameters to methods
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|
1724 } |
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diff
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|
1725 |
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|
1726 const TypeStackSlotEntries* parameters() const { return &_parameters; } |
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8026251: New type profiling points: parameters to methods
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diff
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|
1727 |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
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diff
changeset
|
1728 uint stack_slot(int i) const { |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
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|
1729 return _parameters.stack_slot(i); |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
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parents:
12882
diff
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|
1730 } |
5ccbab1c69f3
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diff
changeset
|
1731 |
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8026251: New type profiling points: parameters to methods
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|
1732 void set_type(int i, Klass* k) { |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
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diff
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|
1733 intptr_t current = _parameters.type(i); |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
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12882
diff
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|
1734 _parameters.set_type(i, TypeEntries::with_status((intptr_t)k, current)); |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
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|
1735 } |
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diff
changeset
|
1736 |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
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12882
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|
1737 virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure) { |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
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|
1738 _parameters.clean_weak_klass_links(is_alive_closure); |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
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diff
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|
1739 } |
5ccbab1c69f3
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parents:
12882
diff
changeset
|
1740 |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
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|
1741 #ifndef PRODUCT |
17728
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8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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diff
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|
1742 virtual void print_data_on(outputStream* st, const char* extra = NULL) const; |
12962
5ccbab1c69f3
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roland
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diff
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|
1743 #endif |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
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|
1744 |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1745 static ByteSize stack_slot_offset(int i) { |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
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|
1746 return cell_offset(stack_slot_local_offset(i)); |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
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parents:
12882
diff
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|
1747 } |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
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|
1748 |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1749 static ByteSize type_offset(int i) { |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1750 return cell_offset(type_local_offset(i)); |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1751 } |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
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|
1752 }; |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1753 |
17728
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
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diff
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|
1754 // 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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|
1755 // |
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 // 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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|
1757 // 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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|
1758 // 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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|
1759 // 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
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diff
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|
1760 // 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
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diff
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|
1761 // 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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diff
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|
1762 // 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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|
1763 // of compilation of method2. |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
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|
1764 // Space for SpeculativeTrapData entries is allocated from the extra |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
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diff
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|
1765 // 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
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diff
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|
1766 // 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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|
1767 class SpeculativeTrapData : public ProfileData { |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
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diff
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|
1768 protected: |
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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|
1769 enum { |
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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|
1770 method_offset, |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
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diff
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|
1771 speculative_trap_cell_count |
b8413a9cbb84
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roland
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diff
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|
1772 }; |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
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diff
changeset
|
1773 public: |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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|
1774 SpeculativeTrapData(DataLayout* layout) : ProfileData(layout) { |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
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diff
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|
1775 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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|
1776 } |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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|
1777 |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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diff
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|
1778 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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|
1779 |
b8413a9cbb84
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diff
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|
1780 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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|
1781 return speculative_trap_cell_count; |
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roland
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diff
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|
1782 } |
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|
1783 |
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|
1784 virtual int cell_count() const { |
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8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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|
1785 return static_cell_count(); |
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|
1786 } |
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|
1787 |
b8413a9cbb84
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diff
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|
1788 // Direct accessor |
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roland
parents:
13080
diff
changeset
|
1789 Method* method() const { |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
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diff
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|
1790 return (Method*)intptr_at(method_offset); |
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|
1791 } |
b8413a9cbb84
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|
1792 |
b8413a9cbb84
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|
1793 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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|
1794 set_intptr_at(method_offset, (intptr_t)m); |
b8413a9cbb84
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|
1795 } |
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|
1796 |
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1797 #ifndef PRODUCT |
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1798 virtual void print_data_on(outputStream* st, const char* extra = NULL) const; |
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1799 #endif |
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1800 }; |
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1801 |
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1802 // MethodData* |
0 | 1803 // |
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1804 // A MethodData* holds information which has been collected about |
0 | 1805 // a method. Its layout looks like this: |
1806 // | |
1807 // ----------------------------- | |
1808 // | header | | |
1809 // | klass | | |
1810 // ----------------------------- | |
1811 // | method | | |
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1812 // | size of the MethodData* | |
0 | 1813 // ----------------------------- |
1814 // | Data entries... | | |
1815 // | (variable size) | | |
1816 // | | | |
1817 // . . | |
1818 // . . | |
1819 // . . | |
1820 // | | | |
1821 // ----------------------------- | |
1822 // | |
1823 // The data entry area is a heterogeneous array of DataLayouts. Each | |
1824 // DataLayout in the array corresponds to a specific bytecode in the | |
1825 // method. The entries in the array are sorted by the corresponding | |
1826 // bytecode. Access to the data is via resource-allocated ProfileData, | |
1827 // which point to the underlying blocks of DataLayout structures. | |
1828 // | |
1829 // During interpretation, if profiling in enabled, the interpreter | |
1830 // maintains a method data pointer (mdp), which points at the entry | |
1831 // in the array corresponding to the current bci. In the course of | |
1832 // intepretation, when a bytecode is encountered that has profile data | |
1833 // associated with it, the entry pointed to by mdp is updated, then the | |
1834 // mdp is adjusted to point to the next appropriate DataLayout. If mdp | |
1835 // is NULL to begin with, the interpreter assumes that the current method | |
1836 // is not (yet) being profiled. | |
1837 // | |
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1838 // In MethodData* parlance, "dp" is a "data pointer", the actual address |
0 | 1839 // of a DataLayout element. A "di" is a "data index", the offset in bytes |
1840 // from the base of the data entry array. A "displacement" is the byte offset | |
1841 // in certain ProfileData objects that indicate the amount the mdp must be | |
1842 // adjusted in the event of a change in control flow. | |
1843 // | |
1844 | |
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1845 class MethodData : public Metadata { |
0 | 1846 friend class VMStructs; |
1847 private: | |
1848 friend class ProfileData; | |
1849 | |
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1850 // Back pointer to the Method* |
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1851 Method* _method; |
0 | 1852 |
1853 // Size of this oop in bytes | |
1854 int _size; | |
1855 | |
1856 // Cached hint for bci_to_dp and bci_to_data | |
1857 int _hint_di; | |
1858 | |
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1859 MethodData(methodHandle method, int size, TRAPS); |
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1860 public: |
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1861 static MethodData* allocate(ClassLoaderData* loader_data, methodHandle method, TRAPS); |
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1862 MethodData() {}; // For ciMethodData |
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1863 |
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1864 bool is_methodData() const volatile { return true; } |
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1865 |
0 | 1866 // Whole-method sticky bits and flags |
1867 enum { | |
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1868 _trap_hist_limit = 18, // decoupled from Deoptimization::Reason_LIMIT |
0 | 1869 _trap_hist_mask = max_jubyte, |
1870 _extra_data_count = 4 // extra DataLayout headers, for trap history | |
1871 }; // Public flag values | |
1872 private: | |
1873 uint _nof_decompiles; // count of all nmethod removals | |
1874 uint _nof_overflow_recompiles; // recompile count, excluding recomp. bits | |
1875 uint _nof_overflow_traps; // trap count, excluding _trap_hist | |
1876 union { | |
1877 intptr_t _align; | |
1878 u1 _array[_trap_hist_limit]; | |
1879 } _trap_hist; | |
1880 | |
1881 // Support for interprocedural escape analysis, from Thomas Kotzmann. | |
1882 intx _eflags; // flags on escape information | |
1883 intx _arg_local; // bit set of non-escaping arguments | |
1884 intx _arg_stack; // bit set of stack-allocatable arguments | |
1885 intx _arg_returned; // bit set of returned arguments | |
1886 | |
1783 | 1887 int _creation_mileage; // method mileage at MDO creation |
1888 | |
1889 // How many invocations has this MDO seen? | |
1890 // These counters are used to determine the exact age of MDO. | |
1891 // We need those because in tiered a method can be concurrently | |
1892 // executed at different levels. | |
1893 InvocationCounter _invocation_counter; | |
1894 // Same for backedges. | |
1895 InvocationCounter _backedge_counter; | |
2252 | 1896 // Counter values at the time profiling started. |
1897 int _invocation_counter_start; | |
1898 int _backedge_counter_start; | |
1783 | 1899 // Number of loops and blocks is computed when compiling the first |
1900 // time with C1. It is used to determine if method is trivial. | |
1901 short _num_loops; | |
1902 short _num_blocks; | |
1903 // Highest compile level this method has ever seen. | |
1904 u1 _highest_comp_level; | |
1905 // Same for OSR level | |
1906 u1 _highest_osr_comp_level; | |
1907 // Does this method contain anything worth profiling? | |
1908 bool _would_profile; | |
0 | 1909 |
1910 // Size of _data array in bytes. (Excludes header and extra_data fields.) | |
1911 int _data_size; | |
1912 | |
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1913 // data index for the area dedicated to parameters. -1 if no |
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1914 // parameter profiling. |
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1915 int _parameters_type_data_di; |
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1916 |
0 | 1917 // Beginning of the data entries |
1918 intptr_t _data[1]; | |
1919 | |
1920 // Helper for size computation | |
1921 static int compute_data_size(BytecodeStream* stream); | |
1922 static int bytecode_cell_count(Bytecodes::Code code); | |
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1923 static bool is_speculative_trap_bytecode(Bytecodes::Code code); |
0 | 1924 enum { no_profile_data = -1, variable_cell_count = -2 }; |
1925 | |
1926 // Helper for initialization | |
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1927 DataLayout* data_layout_at(int data_index) const { |
0 | 1928 assert(data_index % sizeof(intptr_t) == 0, "unaligned"); |
1929 return (DataLayout*) (((address)_data) + data_index); | |
1930 } | |
1931 | |
1932 // Initialize an individual data segment. Returns the size of | |
1933 // the segment in bytes. | |
1934 int initialize_data(BytecodeStream* stream, int data_index); | |
1935 | |
1936 // Helper for data_at | |
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1937 DataLayout* limit_data_position() const { |
0 | 1938 return (DataLayout*)((address)data_base() + _data_size); |
1939 } | |
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1940 bool out_of_bounds(int data_index) const { |
0 | 1941 return data_index >= data_size(); |
1942 } | |
1943 | |
1944 // Give each of the data entries a chance to perform specific | |
1945 // data initialization. | |
1946 void post_initialize(BytecodeStream* stream); | |
1947 | |
1948 // hint accessors | |
1949 int hint_di() const { return _hint_di; } | |
1950 void set_hint_di(int di) { | |
1951 assert(!out_of_bounds(di), "hint_di out of bounds"); | |
1952 _hint_di = di; | |
1953 } | |
1954 ProfileData* data_before(int bci) { | |
1955 // avoid SEGV on this edge case | |
1956 if (data_size() == 0) | |
1957 return NULL; | |
1958 int hint = hint_di(); | |
1959 if (data_layout_at(hint)->bci() <= bci) | |
1960 return data_at(hint); | |
1961 return first_data(); | |
1962 } | |
1963 | |
1964 // What is the index of the first data entry? | |
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1965 int first_di() const { return 0; } |
0 | 1966 |
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1967 ProfileData* bci_to_extra_data_helper(int bci, Method* m, DataLayout*& dp); |
0 | 1968 // Find or create an extra ProfileData: |
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1969 ProfileData* bci_to_extra_data(int bci, Method* m, bool create_if_missing); |
0 | 1970 |
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1971 // return the argument info cell |
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1972 ArgInfoData *arg_info(); |
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1973 |
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1974 enum { |
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1975 no_type_profile = 0, |
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1976 type_profile_jsr292 = 1, |
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1977 type_profile_all = 2 |
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1978 }; |
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1979 |
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1980 static bool profile_jsr292(methodHandle m, int bci); |
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1981 static int profile_arguments_flag(); |
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1982 static bool profile_arguments_jsr292_only(); |
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1983 static bool profile_all_arguments(); |
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1984 static bool profile_arguments_for_invoke(methodHandle m, int bci); |
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1985 static int profile_return_flag(); |
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1986 static bool profile_all_return(); |
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1987 static bool profile_return_for_invoke(methodHandle m, int bci); |
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1988 static int profile_parameters_flag(); |
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1989 static bool profile_parameters_jsr292_only(); |
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1990 static bool profile_all_parameters(); |
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1991 |
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1992 void clean_extra_data(BoolObjectClosure* is_alive); |
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1993 void clean_extra_data_helper(DataLayout* dp, int shift, bool reset = false); |
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1994 void verify_extra_data_clean(BoolObjectClosure* is_alive); |
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1995 |
0 | 1996 public: |
1997 static int header_size() { | |
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1998 return sizeof(MethodData)/wordSize; |
0 | 1999 } |
2000 | |
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2001 // Compute the size of a MethodData* before it is created. |
0 | 2002 static int compute_allocation_size_in_bytes(methodHandle method); |
2003 static int compute_allocation_size_in_words(methodHandle method); | |
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2004 static int compute_extra_data_count(int data_size, int empty_bc_count, bool needs_speculative_traps); |
0 | 2005 |
2006 // Determine if a given bytecode can have profile information. | |
2007 static bool bytecode_has_profile(Bytecodes::Code code) { | |
2008 return bytecode_cell_count(code) != no_profile_data; | |
2009 } | |
2010 | |
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2011 // reset into original state |
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2012 void init(); |
0 | 2013 |
2014 // My size | |
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2015 int size_in_bytes() const { return _size; } |
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2016 int size() const { return align_object_size(align_size_up(_size, BytesPerWord)/BytesPerWord); } |
7956 | 2017 #if INCLUDE_SERVICES |
2018 void collect_statistics(KlassSizeStats *sz) const; | |
2019 #endif | |
0 | 2020 |
2021 int creation_mileage() const { return _creation_mileage; } | |
2022 void set_creation_mileage(int x) { _creation_mileage = x; } | |
1783 | 2023 |
2024 int invocation_count() { | |
2025 if (invocation_counter()->carry()) { | |
2026 return InvocationCounter::count_limit; | |
2027 } | |
2028 return invocation_counter()->count(); | |
2029 } | |
2030 int backedge_count() { | |
2031 if (backedge_counter()->carry()) { | |
2032 return InvocationCounter::count_limit; | |
2033 } | |
2034 return backedge_counter()->count(); | |
2035 } | |
2036 | |
2252 | 2037 int invocation_count_start() { |
2038 if (invocation_counter()->carry()) { | |
2039 return 0; | |
2040 } | |
2041 return _invocation_counter_start; | |
2042 } | |
2043 | |
2044 int backedge_count_start() { | |
2045 if (backedge_counter()->carry()) { | |
2046 return 0; | |
2047 } | |
2048 return _backedge_counter_start; | |
2049 } | |
2050 | |
2051 int invocation_count_delta() { return invocation_count() - invocation_count_start(); } | |
2052 int backedge_count_delta() { return backedge_count() - backedge_count_start(); } | |
2053 | |
2054 void reset_start_counters() { | |
2055 _invocation_counter_start = invocation_count(); | |
2056 _backedge_counter_start = backedge_count(); | |
2057 } | |
2058 | |
1783 | 2059 InvocationCounter* invocation_counter() { return &_invocation_counter; } |
2060 InvocationCounter* backedge_counter() { return &_backedge_counter; } | |
2061 | |
2062 void set_would_profile(bool p) { _would_profile = p; } | |
2063 bool would_profile() const { return _would_profile; } | |
2064 | |
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2065 int highest_comp_level() const { return _highest_comp_level; } |
1783 | 2066 void set_highest_comp_level(int level) { _highest_comp_level = level; } |
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2067 int highest_osr_comp_level() const { return _highest_osr_comp_level; } |
1783 | 2068 void set_highest_osr_comp_level(int level) { _highest_osr_comp_level = level; } |
2069 | |
2070 int num_loops() const { return _num_loops; } | |
2071 void set_num_loops(int n) { _num_loops = n; } | |
2072 int num_blocks() const { return _num_blocks; } | |
2073 void set_num_blocks(int n) { _num_blocks = n; } | |
2074 | |
0 | 2075 bool is_mature() const; // consult mileage and ProfileMaturityPercentage |
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2076 static int mileage_of(Method* m); |
0 | 2077 |
2078 // Support for interprocedural escape analysis, from Thomas Kotzmann. | |
2079 enum EscapeFlag { | |
2080 estimated = 1 << 0, | |
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2081 return_local = 1 << 1, |
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2082 return_allocated = 1 << 2, |
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2083 allocated_escapes = 1 << 3, |
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2084 unknown_modified = 1 << 4 |
0 | 2085 }; |
2086 | |
2087 intx eflags() { return _eflags; } | |
2088 intx arg_local() { return _arg_local; } | |
2089 intx arg_stack() { return _arg_stack; } | |
2090 intx arg_returned() { return _arg_returned; } | |
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2091 uint arg_modified(int a) { ArgInfoData *aid = arg_info(); |
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2092 assert(aid != NULL, "arg_info must be not null"); |
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2093 assert(a >= 0 && a < aid->number_of_args(), "valid argument number"); |
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2094 return aid->arg_modified(a); } |
0 | 2095 |
2096 void set_eflags(intx v) { _eflags = v; } | |
2097 void set_arg_local(intx v) { _arg_local = v; } | |
2098 void set_arg_stack(intx v) { _arg_stack = v; } | |
2099 void set_arg_returned(intx v) { _arg_returned = v; } | |
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2100 void set_arg_modified(int a, uint v) { ArgInfoData *aid = arg_info(); |
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2101 assert(aid != NULL, "arg_info must be not null"); |
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2102 assert(a >= 0 && a < aid->number_of_args(), "valid argument number"); |
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2103 aid->set_arg_modified(a, v); } |
0 | 2104 |
2105 void clear_escape_info() { _eflags = _arg_local = _arg_stack = _arg_returned = 0; } | |
2106 | |
2107 // Location and size of data area | |
2108 address data_base() const { | |
2109 return (address) _data; | |
2110 } | |
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2111 int data_size() const { |
0 | 2112 return _data_size; |
2113 } | |
2114 | |
2115 // Accessors | |
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2116 Method* method() const { return _method; } |
0 | 2117 |
2118 // Get the data at an arbitrary (sort of) data index. | |
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2119 ProfileData* data_at(int data_index) const; |
0 | 2120 |
2121 // Walk through the data in order. | |
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2122 ProfileData* first_data() const { return data_at(first_di()); } |
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2123 ProfileData* next_data(ProfileData* current) const; |
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2124 bool is_valid(ProfileData* current) const { return current != NULL; } |
0 | 2125 |
2126 // Convert a dp (data pointer) to a di (data index). | |
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2127 int dp_to_di(address dp) const { |
0 | 2128 return dp - ((address)_data); |
2129 } | |
2130 | |
2131 address di_to_dp(int di) { | |
2132 return (address)data_layout_at(di); | |
2133 } | |
2134 | |
2135 // bci to di/dp conversion. | |
2136 address bci_to_dp(int bci); | |
2137 int bci_to_di(int bci) { | |
2138 return dp_to_di(bci_to_dp(bci)); | |
2139 } | |
2140 | |
2141 // Get the data at an arbitrary bci, or NULL if there is none. | |
2142 ProfileData* bci_to_data(int bci); | |
2143 | |
2144 // Same, but try to create an extra_data record if one is needed: | |
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2145 ProfileData* allocate_bci_to_data(int bci, Method* m) { |
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2146 ProfileData* data = NULL; |
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2147 // If m not NULL, try to allocate a SpeculativeTrapData entry |
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2148 if (m == NULL) { |
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2149 data = bci_to_data(bci); |
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2150 } |
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2151 if (data != NULL) { |
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2152 return data; |
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2153 } |
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2154 data = bci_to_extra_data(bci, m, true); |
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2155 if (data != NULL) { |
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2156 return data; |
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2157 } |
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2158 // If SpeculativeTrapData allocation fails try to allocate a |
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2159 // regular entry |
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2160 data = bci_to_data(bci); |
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2161 if (data != NULL) { |
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2162 return data; |
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2163 } |
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2164 return bci_to_extra_data(bci, NULL, true); |
0 | 2165 } |
2166 | |
2167 // Add a handful of extra data records, for trap tracking. | |
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2168 DataLayout* extra_data_base() const { return limit_data_position(); } |
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2169 DataLayout* extra_data_limit() const { return (DataLayout*)((address)this + size_in_bytes()); } |
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2170 int extra_data_size() const { return (address)extra_data_limit() |
0 | 2171 - (address)extra_data_base(); } |
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2172 static DataLayout* next_extra(DataLayout* dp); |
0 | 2173 |
2174 // Return (uint)-1 for overflow. | |
2175 uint trap_count(int reason) const { | |
2176 assert((uint)reason < _trap_hist_limit, "oob"); | |
2177 return (int)((_trap_hist._array[reason]+1) & _trap_hist_mask) - 1; | |
2178 } | |
2179 // For loops: | |
2180 static uint trap_reason_limit() { return _trap_hist_limit; } | |
2181 static uint trap_count_limit() { return _trap_hist_mask; } | |
2182 uint inc_trap_count(int reason) { | |
2183 // Count another trap, anywhere in this method. | |
2184 assert(reason >= 0, "must be single trap"); | |
2185 if ((uint)reason < _trap_hist_limit) { | |
2186 uint cnt1 = 1 + _trap_hist._array[reason]; | |
2187 if ((cnt1 & _trap_hist_mask) != 0) { // if no counter overflow... | |
2188 _trap_hist._array[reason] = cnt1; | |
2189 return cnt1; | |
2190 } else { | |
2191 return _trap_hist_mask + (++_nof_overflow_traps); | |
2192 } | |
2193 } else { | |
2194 // Could not represent the count in the histogram. | |
2195 return (++_nof_overflow_traps); | |
2196 } | |
2197 } | |
2198 | |
2199 uint overflow_trap_count() const { | |
2200 return _nof_overflow_traps; | |
2201 } | |
2202 uint overflow_recompile_count() const { | |
2203 return _nof_overflow_recompiles; | |
2204 } | |
2205 void inc_overflow_recompile_count() { | |
2206 _nof_overflow_recompiles += 1; | |
2207 } | |
2208 uint decompile_count() const { | |
2209 return _nof_decompiles; | |
2210 } | |
2211 void inc_decompile_count() { | |
2212 _nof_decompiles += 1; | |
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2213 if (decompile_count() > (uint)PerMethodRecompilationCutoff) { |
7998 | 2214 method()->set_not_compilable(CompLevel_full_optimization, true, "decompile_count > PerMethodRecompilationCutoff"); |
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2215 } |
0 | 2216 } |
2217 | |
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2218 // Return pointer to area dedicated to parameters in MDO |
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2219 ParametersTypeData* parameters_type_data() const { |
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2220 return _parameters_type_data_di != -1 ? data_layout_at(_parameters_type_data_di)->data_in()->as_ParametersTypeData() : NULL; |
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2221 } |
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2222 |
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2223 int parameters_type_data_di() const { |
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2224 assert(_parameters_type_data_di != -1, "no args type data"); |
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2225 return _parameters_type_data_di; |
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2226 } |
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2227 |
0 | 2228 // Support for code generation |
2229 static ByteSize data_offset() { | |
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2230 return byte_offset_of(MethodData, _data[0]); |
0 | 2231 } |
2232 | |
1783 | 2233 static ByteSize invocation_counter_offset() { |
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2234 return byte_offset_of(MethodData, _invocation_counter); |
1783 | 2235 } |
2236 static ByteSize backedge_counter_offset() { | |
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2237 return byte_offset_of(MethodData, _backedge_counter); |
1783 | 2238 } |
2239 | |
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2240 static ByteSize parameters_type_data_di_offset() { |
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2241 return byte_offset_of(MethodData, _parameters_type_data_di); |
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2242 } |
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2243 |
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2244 // Deallocation support - no pointer fields to deallocate |
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2245 void deallocate_contents(ClassLoaderData* loader_data) {} |
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2246 |
0 | 2247 // GC support |
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2248 void set_size(int object_size_in_bytes) { _size = object_size_in_bytes; } |
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2249 |
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2250 // Printing |
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2251 #ifndef PRODUCT |
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2252 void print_on (outputStream* st) const; |
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2253 #endif |
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2254 void print_value_on(outputStream* st) const; |
0 | 2255 |
2256 #ifndef PRODUCT | |
2257 // printing support for method data | |
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2258 void print_data_on(outputStream* st) const; |
0 | 2259 #endif |
2260 | |
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2261 const char* internal_name() const { return "{method data}"; } |
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2262 |
0 | 2263 // verification |
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2264 void verify_on(outputStream* st); |
0 | 2265 void verify_data_on(outputStream* st); |
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2266 |
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2267 static bool profile_parameters_for_method(methodHandle m); |
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2268 static bool profile_arguments(); |
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2269 static bool profile_return(); |
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2270 static bool profile_parameters(); |
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2271 static bool profile_return_jsr292_only(); |
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2272 |
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2273 void clean_method_data(BoolObjectClosure* is_alive); |
0 | 2274 }; |
1972 | 2275 |
2276 #endif // SHARE_VM_OOPS_METHODDATAOOP_HPP |