Mercurial > hg > graal-jvmci-8
annotate src/share/vm/oops/methodData.hpp @ 24234:ea6f94ab283b default tip
Added tag jvmci-0.36 for changeset 8128b98d4736
author | Gilles Duboscq <gilles.m.duboscq@oracle.com> |
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date | Mon, 18 Sep 2017 18:49:45 +0200 |
parents | 038908669316 |
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rev | line source |
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0 | 1 /* |
7956 | 2 * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_OOPS_METHODDATAOOP_HPP |
26 #define SHARE_VM_OOPS_METHODDATAOOP_HPP | |
27 | |
28 #include "interpreter/bytecodes.hpp" | |
29 #include "memory/universe.hpp" | |
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30 #include "oops/method.hpp" |
1972 | 31 #include "oops/oop.hpp" |
32 #include "runtime/orderAccess.hpp" | |
33 | |
0 | 34 class BytecodeStream; |
7956 | 35 class KlassSizeStats; |
0 | 36 |
37 // The MethodData object collects counts and other profile information | |
38 // during zeroth-tier (interpretive) and first-tier execution. | |
39 // The profile is used later by compilation heuristics. Some heuristics | |
40 // enable use of aggressive (or "heroic") optimizations. An aggressive | |
41 // optimization often has a down-side, a corner case that it handles | |
42 // poorly, but which is thought to be rare. The profile provides | |
43 // evidence of this rarity for a given method or even BCI. It allows | |
44 // the compiler to back out of the optimization at places where it | |
45 // has historically been a poor choice. Other heuristics try to use | |
46 // specific information gathered about types observed at a given site. | |
47 // | |
48 // All data in the profile is approximate. It is expected to be accurate | |
49 // on the whole, but the system expects occasional inaccuraces, due to | |
50 // counter overflow, multiprocessor races during data collection, space | |
51 // limitations, missing MDO blocks, etc. Bad or missing data will degrade | |
52 // optimization quality but will not affect correctness. Also, each MDO | |
53 // is marked with its birth-date ("creation_mileage") which can be used | |
54 // to assess the quality ("maturity") of its data. | |
55 // | |
56 // Short (<32-bit) counters are designed to overflow to a known "saturated" | |
57 // state. Also, certain recorded per-BCI events are given one-bit counters | |
58 // which overflow to a saturated state which applied to all counters at | |
59 // that BCI. In other words, there is a small lattice which approximates | |
60 // the ideal of an infinite-precision counter for each event at each BCI, | |
61 // and the lattice quickly "bottoms out" in a state where all counters | |
62 // are taken to be indefinitely large. | |
63 // | |
64 // The reader will find many data races in profile gathering code, starting | |
65 // with invocation counter incrementation. None of these races harm correct | |
66 // execution of the compiled code. | |
67 | |
941 | 68 // forward decl |
69 class ProfileData; | |
70 | |
0 | 71 // DataLayout |
72 // | |
73 // Overlay for generic profiling data. | |
74 class DataLayout VALUE_OBJ_CLASS_SPEC { | |
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75 friend class VMStructs; |
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76 |
0 | 77 private: |
78 // Every data layout begins with a header. This header | |
79 // contains a tag, which is used to indicate the size/layout | |
80 // of the data, 4 bits of flags, which can be used in any way, | |
81 // 4 bits of trap history (none/one reason/many reasons), | |
82 // and a bci, which is used to tie this piece of data to a | |
83 // specific bci in the bytecodes. | |
84 union { | |
85 intptr_t _bits; | |
86 struct { | |
87 u1 _tag; | |
88 u1 _flags; | |
89 u2 _bci; | |
90 } _struct; | |
91 } _header; | |
92 | |
93 // The data layout has an arbitrary number of cells, each sized | |
94 // to accomodate a pointer or an integer. | |
95 intptr_t _cells[1]; | |
96 | |
97 // Some types of data layouts need a length field. | |
98 static bool needs_array_len(u1 tag); | |
99 | |
100 public: | |
101 enum { | |
102 counter_increment = 1 | |
103 }; | |
104 | |
105 enum { | |
106 cell_size = sizeof(intptr_t) | |
107 }; | |
108 | |
109 // Tag values | |
110 enum { | |
111 no_tag, | |
112 bit_data_tag, | |
113 counter_data_tag, | |
114 jump_data_tag, | |
115 receiver_type_data_tag, | |
116 virtual_call_data_tag, | |
117 ret_data_tag, | |
118 branch_data_tag, | |
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119 multi_branch_data_tag, |
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120 arg_info_data_tag, |
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121 call_type_data_tag, |
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122 virtual_call_type_data_tag, |
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123 parameters_type_data_tag, |
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124 speculative_trap_data_tag |
0 | 125 }; |
126 | |
127 enum { | |
128 // The _struct._flags word is formatted as [trap_state:4 | flags:4]. | |
129 // The trap state breaks down further as [recompile:1 | reason:3]. | |
130 // This further breakdown is defined in deoptimization.cpp. | |
131 // See Deoptimization::trap_state_reason for an assert that | |
132 // trap_bits is big enough to hold reasons < Reason_RECORDED_LIMIT. | |
133 // | |
134 // The trap_state is collected only if ProfileTraps is true. | |
135 trap_bits = 1+3, // 3: enough to distinguish [0..Reason_RECORDED_LIMIT]. | |
136 trap_shift = BitsPerByte - trap_bits, | |
137 trap_mask = right_n_bits(trap_bits), | |
138 trap_mask_in_place = (trap_mask << trap_shift), | |
139 flag_limit = trap_shift, | |
140 flag_mask = right_n_bits(flag_limit), | |
141 first_flag = 0 | |
142 }; | |
143 | |
144 // Size computation | |
145 static int header_size_in_bytes() { | |
146 return cell_size; | |
147 } | |
148 static int header_size_in_cells() { | |
149 return 1; | |
150 } | |
151 | |
152 static int compute_size_in_bytes(int cell_count) { | |
153 return header_size_in_bytes() + cell_count * cell_size; | |
154 } | |
155 | |
156 // Initialization | |
157 void initialize(u1 tag, u2 bci, int cell_count); | |
158 | |
159 // Accessors | |
160 u1 tag() { | |
161 return _header._struct._tag; | |
162 } | |
163 | |
164 // Return a few bits of trap state. Range is [0..trap_mask]. | |
165 // The state tells if traps with zero, one, or many reasons have occurred. | |
166 // It also tells whether zero or many recompilations have occurred. | |
167 // The associated trap histogram in the MDO itself tells whether | |
168 // traps are common or not. If a BCI shows that a trap X has | |
169 // occurred, and the MDO shows N occurrences of X, we make the | |
170 // simplifying assumption that all N occurrences can be blamed | |
171 // on that BCI. | |
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172 int trap_state() const { |
0 | 173 return ((_header._struct._flags >> trap_shift) & trap_mask); |
174 } | |
175 | |
176 void set_trap_state(int new_state) { | |
177 assert(ProfileTraps, "used only under +ProfileTraps"); | |
178 uint old_flags = (_header._struct._flags & flag_mask); | |
179 _header._struct._flags = (new_state << trap_shift) | old_flags; | |
180 } | |
181 | |
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182 u1 flags() const { |
0 | 183 return _header._struct._flags; |
184 } | |
185 | |
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186 u2 bci() const { |
0 | 187 return _header._struct._bci; |
188 } | |
189 | |
190 void set_header(intptr_t value) { | |
191 _header._bits = value; | |
192 } | |
193 intptr_t header() { | |
194 return _header._bits; | |
195 } | |
196 void set_cell_at(int index, intptr_t value) { | |
197 _cells[index] = value; | |
198 } | |
199 void release_set_cell_at(int index, intptr_t value) { | |
200 OrderAccess::release_store_ptr(&_cells[index], value); | |
201 } | |
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202 intptr_t cell_at(int index) const { |
0 | 203 return _cells[index]; |
204 } | |
205 | |
206 void set_flag_at(int flag_number) { | |
207 assert(flag_number < flag_limit, "oob"); | |
208 _header._struct._flags |= (0x1 << flag_number); | |
209 } | |
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210 bool flag_at(int flag_number) const { |
0 | 211 assert(flag_number < flag_limit, "oob"); |
212 return (_header._struct._flags & (0x1 << flag_number)) != 0; | |
213 } | |
214 | |
215 // Low-level support for code generation. | |
216 static ByteSize header_offset() { | |
217 return byte_offset_of(DataLayout, _header); | |
218 } | |
219 static ByteSize tag_offset() { | |
220 return byte_offset_of(DataLayout, _header._struct._tag); | |
221 } | |
222 static ByteSize flags_offset() { | |
223 return byte_offset_of(DataLayout, _header._struct._flags); | |
224 } | |
225 static ByteSize bci_offset() { | |
226 return byte_offset_of(DataLayout, _header._struct._bci); | |
227 } | |
228 static ByteSize cell_offset(int index) { | |
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229 return byte_offset_of(DataLayout, _cells) + in_ByteSize(index * cell_size); |
0 | 230 } |
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231 #ifdef CC_INTERP |
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232 static int cell_offset_in_bytes(int index) { |
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233 return (int)offset_of(DataLayout, _cells[index]); |
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234 } |
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235 #endif // CC_INTERP |
0 | 236 // Return a value which, when or-ed as a byte into _flags, sets the flag. |
237 static int flag_number_to_byte_constant(int flag_number) { | |
238 assert(0 <= flag_number && flag_number < flag_limit, "oob"); | |
239 DataLayout temp; temp.set_header(0); | |
240 temp.set_flag_at(flag_number); | |
241 return temp._header._struct._flags; | |
242 } | |
243 // Return a value which, when or-ed as a word into _header, sets the flag. | |
244 static intptr_t flag_mask_to_header_mask(int byte_constant) { | |
245 DataLayout temp; temp.set_header(0); | |
246 temp._header._struct._flags = byte_constant; | |
247 return temp._header._bits; | |
248 } | |
941 | 249 |
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250 ProfileData* data_in(); |
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251 |
941 | 252 // GC support |
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253 void clean_weak_klass_links(BoolObjectClosure* cl); |
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254 |
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255 // Redefinition support |
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256 void clean_weak_method_links(); |
0 | 257 }; |
258 | |
259 | |
260 // ProfileData class hierarchy | |
261 class ProfileData; | |
262 class BitData; | |
263 class CounterData; | |
264 class ReceiverTypeData; | |
265 class VirtualCallData; | |
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266 class VirtualCallTypeData; |
0 | 267 class RetData; |
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268 class CallTypeData; |
0 | 269 class JumpData; |
270 class BranchData; | |
271 class ArrayData; | |
272 class MultiBranchData; | |
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273 class ArgInfoData; |
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274 class ParametersTypeData; |
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275 class SpeculativeTrapData; |
0 | 276 |
277 // ProfileData | |
278 // | |
279 // A ProfileData object is created to refer to a section of profiling | |
280 // data in a structured way. | |
281 class ProfileData : public ResourceObj { | |
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282 friend class TypeEntries; |
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283 friend class ReturnTypeEntry; |
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284 friend class TypeStackSlotEntries; |
0 | 285 private: |
286 #ifndef PRODUCT | |
287 enum { | |
288 tab_width_one = 16, | |
289 tab_width_two = 36 | |
290 }; | |
291 #endif // !PRODUCT | |
292 | |
293 // This is a pointer to a section of profiling data. | |
294 DataLayout* _data; | |
295 | |
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296 char* print_data_on_helper(const MethodData* md) const; |
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297 |
0 | 298 protected: |
299 DataLayout* data() { return _data; } | |
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300 const DataLayout* data() const { return _data; } |
0 | 301 |
302 enum { | |
303 cell_size = DataLayout::cell_size | |
304 }; | |
305 | |
306 public: | |
307 // How many cells are in this? | |
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308 virtual int cell_count() const { |
0 | 309 ShouldNotReachHere(); |
310 return -1; | |
311 } | |
312 | |
313 // Return the size of this data. | |
314 int size_in_bytes() { | |
315 return DataLayout::compute_size_in_bytes(cell_count()); | |
316 } | |
317 | |
318 protected: | |
319 // Low-level accessors for underlying data | |
320 void set_intptr_at(int index, intptr_t value) { | |
321 assert(0 <= index && index < cell_count(), "oob"); | |
322 data()->set_cell_at(index, value); | |
323 } | |
324 void release_set_intptr_at(int index, intptr_t value) { | |
325 assert(0 <= index && index < cell_count(), "oob"); | |
326 data()->release_set_cell_at(index, value); | |
327 } | |
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328 intptr_t intptr_at(int index) const { |
0 | 329 assert(0 <= index && index < cell_count(), "oob"); |
330 return data()->cell_at(index); | |
331 } | |
332 void set_uint_at(int index, uint value) { | |
333 set_intptr_at(index, (intptr_t) value); | |
334 } | |
335 void release_set_uint_at(int index, uint value) { | |
336 release_set_intptr_at(index, (intptr_t) value); | |
337 } | |
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338 uint uint_at(int index) const { |
0 | 339 return (uint)intptr_at(index); |
340 } | |
341 void set_int_at(int index, int value) { | |
342 set_intptr_at(index, (intptr_t) value); | |
343 } | |
344 void release_set_int_at(int index, int value) { | |
345 release_set_intptr_at(index, (intptr_t) value); | |
346 } | |
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347 int int_at(int index) const { |
0 | 348 return (int)intptr_at(index); |
349 } | |
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350 int int_at_unchecked(int index) const { |
0 | 351 return (int)data()->cell_at(index); |
352 } | |
353 void set_oop_at(int index, oop value) { | |
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354 set_intptr_at(index, cast_from_oop<intptr_t>(value)); |
0 | 355 } |
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356 oop oop_at(int index) const { |
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357 return cast_to_oop(intptr_at(index)); |
0 | 358 } |
359 | |
360 void set_flag_at(int flag_number) { | |
361 data()->set_flag_at(flag_number); | |
362 } | |
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363 bool flag_at(int flag_number) const { |
0 | 364 return data()->flag_at(flag_number); |
365 } | |
366 | |
367 // two convenient imports for use by subclasses: | |
368 static ByteSize cell_offset(int index) { | |
369 return DataLayout::cell_offset(index); | |
370 } | |
371 static int flag_number_to_byte_constant(int flag_number) { | |
372 return DataLayout::flag_number_to_byte_constant(flag_number); | |
373 } | |
374 | |
375 ProfileData(DataLayout* data) { | |
376 _data = data; | |
377 } | |
378 | |
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379 #ifdef CC_INTERP |
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380 // Static low level accessors for DataLayout with ProfileData's semantics. |
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381 |
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382 static int cell_offset_in_bytes(int index) { |
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383 return DataLayout::cell_offset_in_bytes(index); |
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384 } |
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385 |
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386 static void increment_uint_at_no_overflow(DataLayout* layout, int index, |
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387 int inc = DataLayout::counter_increment) { |
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388 uint count = ((uint)layout->cell_at(index)) + inc; |
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389 if (count == 0) return; |
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390 layout->set_cell_at(index, (intptr_t) count); |
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391 } |
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392 |
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393 static int int_at(DataLayout* layout, int index) { |
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394 return (int)layout->cell_at(index); |
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395 } |
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396 |
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397 static int uint_at(DataLayout* layout, int index) { |
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398 return (uint)layout->cell_at(index); |
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399 } |
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400 |
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401 static oop oop_at(DataLayout* layout, int index) { |
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402 return cast_to_oop(layout->cell_at(index)); |
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403 } |
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404 |
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405 static void set_intptr_at(DataLayout* layout, int index, intptr_t value) { |
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406 layout->set_cell_at(index, (intptr_t) value); |
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407 } |
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408 |
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409 static void set_flag_at(DataLayout* layout, int flag_number) { |
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410 layout->set_flag_at(flag_number); |
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411 } |
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412 #endif // CC_INTERP |
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413 |
0 | 414 public: |
415 // Constructor for invalid ProfileData. | |
416 ProfileData(); | |
417 | |
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418 u2 bci() const { |
0 | 419 return data()->bci(); |
420 } | |
421 | |
422 address dp() { | |
423 return (address)_data; | |
424 } | |
425 | |
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426 int trap_state() const { |
0 | 427 return data()->trap_state(); |
428 } | |
429 void set_trap_state(int new_state) { | |
430 data()->set_trap_state(new_state); | |
431 } | |
432 | |
433 // Type checking | |
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434 virtual bool is_BitData() const { return false; } |
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435 virtual bool is_CounterData() const { return false; } |
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436 virtual bool is_JumpData() const { return false; } |
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437 virtual bool is_ReceiverTypeData()const { return false; } |
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438 virtual bool is_VirtualCallData() const { return false; } |
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439 virtual bool is_RetData() const { return false; } |
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440 virtual bool is_BranchData() const { return false; } |
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441 virtual bool is_ArrayData() const { return false; } |
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442 virtual bool is_MultiBranchData() const { return false; } |
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443 virtual bool is_ArgInfoData() const { return false; } |
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444 virtual bool is_CallTypeData() const { return false; } |
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445 virtual bool is_VirtualCallTypeData()const { return false; } |
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446 virtual bool is_ParametersTypeData() const { return false; } |
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447 virtual bool is_SpeculativeTrapData()const { return false; } |
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448 |
0 | 449 |
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450 BitData* as_BitData() const { |
0 | 451 assert(is_BitData(), "wrong type"); |
452 return is_BitData() ? (BitData*) this : NULL; | |
453 } | |
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454 CounterData* as_CounterData() const { |
0 | 455 assert(is_CounterData(), "wrong type"); |
456 return is_CounterData() ? (CounterData*) this : NULL; | |
457 } | |
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458 JumpData* as_JumpData() const { |
0 | 459 assert(is_JumpData(), "wrong type"); |
460 return is_JumpData() ? (JumpData*) this : NULL; | |
461 } | |
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462 ReceiverTypeData* as_ReceiverTypeData() const { |
0 | 463 assert(is_ReceiverTypeData(), "wrong type"); |
464 return is_ReceiverTypeData() ? (ReceiverTypeData*)this : NULL; | |
465 } | |
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466 VirtualCallData* as_VirtualCallData() const { |
0 | 467 assert(is_VirtualCallData(), "wrong type"); |
468 return is_VirtualCallData() ? (VirtualCallData*)this : NULL; | |
469 } | |
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470 RetData* as_RetData() const { |
0 | 471 assert(is_RetData(), "wrong type"); |
472 return is_RetData() ? (RetData*) this : NULL; | |
473 } | |
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474 BranchData* as_BranchData() const { |
0 | 475 assert(is_BranchData(), "wrong type"); |
476 return is_BranchData() ? (BranchData*) this : NULL; | |
477 } | |
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478 ArrayData* as_ArrayData() const { |
0 | 479 assert(is_ArrayData(), "wrong type"); |
480 return is_ArrayData() ? (ArrayData*) this : NULL; | |
481 } | |
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482 MultiBranchData* as_MultiBranchData() const { |
0 | 483 assert(is_MultiBranchData(), "wrong type"); |
484 return is_MultiBranchData() ? (MultiBranchData*)this : NULL; | |
485 } | |
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486 ArgInfoData* as_ArgInfoData() const { |
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487 assert(is_ArgInfoData(), "wrong type"); |
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488 return is_ArgInfoData() ? (ArgInfoData*)this : NULL; |
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489 } |
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490 CallTypeData* as_CallTypeData() const { |
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491 assert(is_CallTypeData(), "wrong type"); |
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492 return is_CallTypeData() ? (CallTypeData*)this : NULL; |
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493 } |
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494 VirtualCallTypeData* as_VirtualCallTypeData() const { |
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495 assert(is_VirtualCallTypeData(), "wrong type"); |
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496 return is_VirtualCallTypeData() ? (VirtualCallTypeData*)this : NULL; |
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497 } |
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498 ParametersTypeData* as_ParametersTypeData() const { |
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499 assert(is_ParametersTypeData(), "wrong type"); |
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500 return is_ParametersTypeData() ? (ParametersTypeData*)this : NULL; |
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501 } |
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502 SpeculativeTrapData* as_SpeculativeTrapData() const { |
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503 assert(is_SpeculativeTrapData(), "wrong type"); |
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504 return is_SpeculativeTrapData() ? (SpeculativeTrapData*)this : NULL; |
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505 } |
0 | 506 |
507 | |
508 // Subclass specific initialization | |
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509 virtual void post_initialize(BytecodeStream* stream, MethodData* mdo) {} |
0 | 510 |
511 // GC support | |
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512 virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure) {} |
0 | 513 |
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514 // Redefinition support |
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515 virtual void clean_weak_method_links() {} |
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516 |
0 | 517 // CI translation: ProfileData can represent both MethodDataOop data |
518 // as well as CIMethodData data. This function is provided for translating | |
519 // an oop in a ProfileData to the ci equivalent. Generally speaking, | |
520 // most ProfileData don't require any translation, so we provide the null | |
521 // translation here, and the required translators are in the ci subclasses. | |
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522 virtual void translate_from(const ProfileData* data) {} |
0 | 523 |
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524 virtual void print_data_on(outputStream* st, const char* extra = NULL) const { |
0 | 525 ShouldNotReachHere(); |
526 } | |
527 | |
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528 void print_data_on(outputStream* st, const MethodData* md) const; |
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529 |
0 | 530 #ifndef PRODUCT |
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531 void print_shared(outputStream* st, const char* name, const char* extra) const; |
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532 void tab(outputStream* st, bool first = false) const; |
0 | 533 #endif |
534 }; | |
535 | |
536 // BitData | |
537 // | |
538 // A BitData holds a flag or two in its header. | |
539 class BitData : public ProfileData { | |
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540 friend class VMStructs; |
0 | 541 protected: |
542 enum { | |
543 // null_seen: | |
544 // saw a null operand (cast/aastore/instanceof) | |
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545 null_seen_flag = DataLayout::first_flag + 0 |
20804 | 546 |
22298 | 547 #if INCLUDE_JVMCI |
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548 // bytecode threw any exception |
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549 , exception_seen_flag = null_seen_flag + 1 |
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550 #endif |
0 | 551 }; |
552 enum { bit_cell_count = 0 }; // no additional data fields needed. | |
553 public: | |
554 BitData(DataLayout* layout) : ProfileData(layout) { | |
555 } | |
556 | |
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557 virtual bool is_BitData() const { return true; } |
0 | 558 |
559 static int static_cell_count() { | |
560 return bit_cell_count; | |
561 } | |
562 | |
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563 virtual int cell_count() const { |
0 | 564 return static_cell_count(); |
565 } | |
566 | |
567 // Accessor | |
568 | |
569 // The null_seen flag bit is specially known to the interpreter. | |
570 // Consulting it allows the compiler to avoid setting up null_check traps. | |
571 bool null_seen() { return flag_at(null_seen_flag); } | |
572 void set_null_seen() { set_flag_at(null_seen_flag); } | |
573 | |
22298 | 574 #if INCLUDE_JVMCI |
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575 // true if an exception was thrown at the specific BCI |
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576 bool exception_seen() { return flag_at(exception_seen_flag); } |
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577 void set_exception_seen() { set_flag_at(exception_seen_flag); } |
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578 #endif |
0 | 579 |
580 // Code generation support | |
581 static int null_seen_byte_constant() { | |
582 return flag_number_to_byte_constant(null_seen_flag); | |
583 } | |
584 | |
585 static ByteSize bit_data_size() { | |
586 return cell_offset(bit_cell_count); | |
587 } | |
588 | |
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589 #ifdef CC_INTERP |
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590 static int bit_data_size_in_bytes() { |
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591 return cell_offset_in_bytes(bit_cell_count); |
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592 } |
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593 |
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594 static void set_null_seen(DataLayout* layout) { |
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595 set_flag_at(layout, null_seen_flag); |
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596 } |
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597 |
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598 static DataLayout* advance(DataLayout* layout) { |
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599 return (DataLayout*) (((address)layout) + (ssize_t)BitData::bit_data_size_in_bytes()); |
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600 } |
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601 #endif // CC_INTERP |
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602 |
0 | 603 #ifndef PRODUCT |
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604 void print_data_on(outputStream* st, const char* extra = NULL) const; |
0 | 605 #endif |
606 }; | |
607 | |
608 // CounterData | |
609 // | |
610 // A CounterData corresponds to a simple counter. | |
611 class CounterData : public BitData { | |
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612 friend class VMStructs; |
0 | 613 protected: |
614 enum { | |
615 count_off, | |
616 counter_cell_count | |
617 }; | |
618 public: | |
619 CounterData(DataLayout* layout) : BitData(layout) {} | |
620 | |
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621 virtual bool is_CounterData() const { return true; } |
0 | 622 |
623 static int static_cell_count() { | |
624 return counter_cell_count; | |
625 } | |
626 | |
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627 virtual int cell_count() const { |
0 | 628 return static_cell_count(); |
629 } | |
630 | |
631 // Direct accessor | |
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632 uint count() const { |
0 | 633 return uint_at(count_off); |
634 } | |
635 | |
636 // Code generation support | |
637 static ByteSize count_offset() { | |
638 return cell_offset(count_off); | |
639 } | |
640 static ByteSize counter_data_size() { | |
641 return cell_offset(counter_cell_count); | |
642 } | |
643 | |
1251
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644 void set_count(uint count) { |
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645 set_uint_at(count_off, count); |
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646 } |
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647 |
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648 #ifdef CC_INTERP |
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649 static int counter_data_size_in_bytes() { |
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650 return cell_offset_in_bytes(counter_cell_count); |
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651 } |
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652 |
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653 static void increment_count_no_overflow(DataLayout* layout) { |
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654 increment_uint_at_no_overflow(layout, count_off); |
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655 } |
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656 |
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657 // Support counter decrementation at checkcast / subtype check failed. |
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658 static void decrement_count(DataLayout* layout) { |
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659 increment_uint_at_no_overflow(layout, count_off, -1); |
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660 } |
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661 |
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662 static DataLayout* advance(DataLayout* layout) { |
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663 return (DataLayout*) (((address)layout) + (ssize_t)CounterData::counter_data_size_in_bytes()); |
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664 } |
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665 #endif // CC_INTERP |
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666 |
0 | 667 #ifndef PRODUCT |
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668 void print_data_on(outputStream* st, const char* extra = NULL) const; |
0 | 669 #endif |
670 }; | |
671 | |
672 // JumpData | |
673 // | |
674 // A JumpData is used to access profiling information for a direct | |
675 // branch. It is a counter, used for counting the number of branches, | |
676 // plus a data displacement, used for realigning the data pointer to | |
677 // the corresponding target bci. | |
678 class JumpData : public ProfileData { | |
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679 friend class VMStructs; |
0 | 680 protected: |
681 enum { | |
682 taken_off_set, | |
683 displacement_off_set, | |
684 jump_cell_count | |
685 }; | |
686 | |
687 void set_displacement(int displacement) { | |
688 set_int_at(displacement_off_set, displacement); | |
689 } | |
690 | |
691 public: | |
692 JumpData(DataLayout* layout) : ProfileData(layout) { | |
693 assert(layout->tag() == DataLayout::jump_data_tag || | |
694 layout->tag() == DataLayout::branch_data_tag, "wrong type"); | |
695 } | |
696 | |
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697 virtual bool is_JumpData() const { return true; } |
0 | 698 |
699 static int static_cell_count() { | |
700 return jump_cell_count; | |
701 } | |
702 | |
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703 virtual int cell_count() const { |
0 | 704 return static_cell_count(); |
705 } | |
706 | |
707 // Direct accessor | |
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708 uint taken() const { |
0 | 709 return uint_at(taken_off_set); |
710 } | |
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711 |
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712 void set_taken(uint cnt) { |
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713 set_uint_at(taken_off_set, cnt); |
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714 } |
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715 |
0 | 716 // Saturating counter |
717 uint inc_taken() { | |
718 uint cnt = taken() + 1; | |
719 // Did we wrap? Will compiler screw us?? | |
720 if (cnt == 0) cnt--; | |
721 set_uint_at(taken_off_set, cnt); | |
722 return cnt; | |
723 } | |
724 | |
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725 int displacement() const { |
0 | 726 return int_at(displacement_off_set); |
727 } | |
728 | |
729 // Code generation support | |
730 static ByteSize taken_offset() { | |
731 return cell_offset(taken_off_set); | |
732 } | |
733 | |
734 static ByteSize displacement_offset() { | |
735 return cell_offset(displacement_off_set); | |
736 } | |
737 | |
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738 #ifdef CC_INTERP |
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739 static void increment_taken_count_no_overflow(DataLayout* layout) { |
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740 increment_uint_at_no_overflow(layout, taken_off_set); |
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741 } |
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742 |
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743 static DataLayout* advance_taken(DataLayout* layout) { |
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744 return (DataLayout*) (((address)layout) + (ssize_t)int_at(layout, displacement_off_set)); |
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745 } |
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746 |
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747 static uint taken_count(DataLayout* layout) { |
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748 return (uint) uint_at(layout, taken_off_set); |
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749 } |
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750 #endif // CC_INTERP |
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751 |
0 | 752 // Specific initialization. |
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753 void post_initialize(BytecodeStream* stream, MethodData* mdo); |
0 | 754 |
755 #ifndef PRODUCT | |
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756 void print_data_on(outputStream* st, const char* extra = NULL) const; |
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757 #endif |
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758 }; |
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759 |
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760 // Entries in a ProfileData object to record types: it can either be |
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761 // none (no profile), unknown (conflicting profile data) or a klass if |
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762 // a single one is seen. Whether a null reference was seen is also |
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763 // recorded. No counter is associated with the type and a single type |
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764 // is tracked (unlike VirtualCallData). |
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765 class TypeEntries { |
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766 |
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767 public: |
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768 |
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769 // A single cell is used to record information for a type: |
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770 // - the cell is initialized to 0 |
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771 // - when a type is discovered it is stored in the cell |
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772 // - bit zero of the cell is used to record whether a null reference |
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773 // was encountered or not |
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774 // - bit 1 is set to record a conflict in the type information |
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775 |
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776 enum { |
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777 null_seen = 1, |
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778 type_mask = ~null_seen, |
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779 type_unknown = 2, |
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780 status_bits = null_seen | type_unknown, |
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781 type_klass_mask = ~status_bits |
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782 }; |
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783 |
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784 // what to initialize a cell to |
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785 static intptr_t type_none() { |
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786 return 0; |
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787 } |
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788 |
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789 // null seen = bit 0 set? |
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790 static bool was_null_seen(intptr_t v) { |
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791 return (v & null_seen) != 0; |
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792 } |
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793 |
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794 // conflicting type information = bit 1 set? |
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795 static bool is_type_unknown(intptr_t v) { |
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796 return (v & type_unknown) != 0; |
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797 } |
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798 |
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799 // not type information yet = all bits cleared, ignoring bit 0? |
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800 static bool is_type_none(intptr_t v) { |
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801 return (v & type_mask) == 0; |
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802 } |
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803 |
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804 // recorded type: cell without bit 0 and 1 |
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805 static intptr_t klass_part(intptr_t v) { |
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806 intptr_t r = v & type_klass_mask; |
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807 return r; |
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808 } |
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809 |
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810 // type recorded |
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811 static Klass* valid_klass(intptr_t k) { |
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812 if (!is_type_none(k) && |
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813 !is_type_unknown(k)) { |
13080 | 814 Klass* res = (Klass*)klass_part(k); |
815 assert(res != NULL, "invalid"); | |
816 return res; | |
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817 } else { |
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818 return NULL; |
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819 } |
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820 } |
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821 |
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822 static intptr_t with_status(intptr_t k, intptr_t in) { |
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823 return k | (in & status_bits); |
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824 } |
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825 |
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826 static intptr_t with_status(Klass* k, intptr_t in) { |
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827 return with_status((intptr_t)k, in); |
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828 } |
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|
829 |
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830 #ifndef PRODUCT |
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831 static void print_klass(outputStream* st, intptr_t k); |
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832 #endif |
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833 |
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834 // GC support |
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835 static bool is_loader_alive(BoolObjectClosure* is_alive_cl, intptr_t p); |
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836 |
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837 protected: |
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838 // ProfileData object these entries are part of |
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839 ProfileData* _pd; |
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840 // offset within the ProfileData object where the entries start |
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841 const int _base_off; |
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842 |
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843 TypeEntries(int base_off) |
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844 : _base_off(base_off), _pd(NULL) {} |
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845 |
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846 void set_intptr_at(int index, intptr_t value) { |
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847 _pd->set_intptr_at(index, value); |
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848 } |
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849 |
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850 intptr_t intptr_at(int index) const { |
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851 return _pd->intptr_at(index); |
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852 } |
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853 |
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854 public: |
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855 void set_profile_data(ProfileData* pd) { |
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856 _pd = pd; |
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857 } |
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|
858 }; |
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859 |
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860 // Type entries used for arguments passed at a call and parameters on |
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861 // method entry. 2 cells per entry: one for the type encoded as in |
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862 // TypeEntries and one initialized with the stack slot where the |
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863 // profiled object is to be found so that the interpreter can locate |
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864 // it quickly. |
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865 class TypeStackSlotEntries : public TypeEntries { |
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|
866 |
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|
867 private: |
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|
868 enum { |
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869 stack_slot_entry, |
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|
870 type_entry, |
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|
871 per_arg_cell_count |
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|
872 }; |
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|
873 |
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874 // offset of cell for stack slot for entry i within ProfileData object |
12882
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875 int stack_slot_offset(int i) const { |
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876 return _base_off + stack_slot_local_offset(i); |
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|
877 } |
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|
878 |
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|
879 protected: |
12882
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880 const int _number_of_entries; |
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881 |
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882 // offset of cell for type for entry i within ProfileData object |
12882
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883 int type_offset(int i) const { |
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884 return _base_off + type_local_offset(i); |
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|
885 } |
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|
886 |
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|
887 public: |
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|
888 |
12882
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889 TypeStackSlotEntries(int base_off, int nb_entries) |
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890 : TypeEntries(base_off), _number_of_entries(nb_entries) {} |
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891 |
12962
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892 static int compute_cell_count(Symbol* signature, bool include_receiver, int max); |
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893 |
12962
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|
894 void post_initialize(Symbol* signature, bool has_receiver, bool include_receiver); |
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|
895 |
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896 // offset of cell for stack slot for entry i within this block of cells for a TypeStackSlotEntries |
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897 static int stack_slot_local_offset(int i) { |
12882
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898 return i * per_arg_cell_count + stack_slot_entry; |
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|
899 } |
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|
900 |
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901 // offset of cell for type for entry i within this block of cells for a TypeStackSlotEntries |
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902 static int type_local_offset(int i) { |
12882
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903 return i * per_arg_cell_count + type_entry; |
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|
904 } |
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|
905 |
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|
906 // stack slot for entry i |
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|
907 uint stack_slot(int i) const { |
12882
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908 assert(i >= 0 && i < _number_of_entries, "oob"); |
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909 return _pd->uint_at(stack_slot_offset(i)); |
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|
910 } |
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|
911 |
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|
912 // set stack slot for entry i |
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|
913 void set_stack_slot(int i, uint num) { |
12882
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914 assert(i >= 0 && i < _number_of_entries, "oob"); |
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915 _pd->set_uint_at(stack_slot_offset(i), num); |
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|
916 } |
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|
917 |
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918 // type for entry i |
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919 intptr_t type(int i) const { |
12882
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920 assert(i >= 0 && i < _number_of_entries, "oob"); |
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921 return _pd->intptr_at(type_offset(i)); |
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|
922 } |
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|
923 |
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|
924 // set type for entry i |
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|
925 void set_type(int i, intptr_t k) { |
12882
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926 assert(i >= 0 && i < _number_of_entries, "oob"); |
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927 _pd->set_intptr_at(type_offset(i), k); |
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|
928 } |
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|
929 |
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|
930 static ByteSize per_arg_size() { |
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|
931 return in_ByteSize(per_arg_cell_count * DataLayout::cell_size); |
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|
932 } |
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|
933 |
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|
934 static int per_arg_count() { |
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|
935 return per_arg_cell_count ; |
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|
936 } |
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|
937 |
12882
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|
938 // GC support |
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|
939 void clean_weak_klass_links(BoolObjectClosure* is_alive_closure); |
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|
940 |
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|
941 #ifndef PRODUCT |
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|
942 void print_data_on(outputStream* st) const; |
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|
943 #endif |
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|
944 }; |
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|
945 |
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|
946 // Type entry used for return from a call. A single cell to record the |
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|
947 // type. |
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|
948 class ReturnTypeEntry : public TypeEntries { |
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|
949 |
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|
950 private: |
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|
951 enum { |
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|
952 cell_count = 1 |
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953 }; |
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954 |
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955 public: |
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956 ReturnTypeEntry(int base_off) |
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957 : TypeEntries(base_off) {} |
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958 |
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959 void post_initialize() { |
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960 set_type(type_none()); |
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961 } |
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962 |
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963 intptr_t type() const { |
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964 return _pd->intptr_at(_base_off); |
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965 } |
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966 |
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967 void set_type(intptr_t k) { |
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968 _pd->set_intptr_at(_base_off, k); |
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969 } |
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970 |
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971 static int static_cell_count() { |
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972 return cell_count; |
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973 } |
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974 |
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975 static ByteSize size() { |
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976 return in_ByteSize(cell_count * DataLayout::cell_size); |
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977 } |
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978 |
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979 ByteSize type_offset() { |
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980 return DataLayout::cell_offset(_base_off); |
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981 } |
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982 |
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983 // GC support |
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984 void clean_weak_klass_links(BoolObjectClosure* is_alive_closure); |
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985 |
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986 #ifndef PRODUCT |
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987 void print_data_on(outputStream* st) const; |
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988 #endif |
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989 }; |
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990 |
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991 // Entries to collect type information at a call: contains arguments |
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992 // (TypeStackSlotEntries), a return type (ReturnTypeEntry) and a |
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993 // number of cells. Because the number of cells for the return type is |
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994 // smaller than the number of cells for the type of an arguments, the |
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995 // number of cells is used to tell how many arguments are profiled and |
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996 // whether a return value is profiled. See has_arguments() and |
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997 // has_return(). |
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998 class TypeEntriesAtCall { |
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999 private: |
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1000 static int stack_slot_local_offset(int i) { |
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1001 return header_cell_count() + TypeStackSlotEntries::stack_slot_local_offset(i); |
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1002 } |
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1003 |
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1004 static int argument_type_local_offset(int i) { |
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1005 return header_cell_count() + TypeStackSlotEntries::type_local_offset(i);; |
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1006 } |
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1007 |
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1008 public: |
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1009 |
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1010 static int header_cell_count() { |
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1011 return 1; |
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1012 } |
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1013 |
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1014 static int cell_count_local_offset() { |
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1015 return 0; |
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1016 } |
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1017 |
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1018 static int compute_cell_count(BytecodeStream* stream); |
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1019 |
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1020 static void initialize(DataLayout* dl, int base, int cell_count) { |
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1021 int off = base + cell_count_local_offset(); |
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1022 dl->set_cell_at(off, cell_count - base - header_cell_count()); |
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1023 } |
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1024 |
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1025 static bool arguments_profiling_enabled(); |
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1026 static bool return_profiling_enabled(); |
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1027 |
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1028 // Code generation support |
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1029 static ByteSize cell_count_offset() { |
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1030 return in_ByteSize(cell_count_local_offset() * DataLayout::cell_size); |
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1031 } |
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1032 |
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1033 static ByteSize args_data_offset() { |
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1034 return in_ByteSize(header_cell_count() * DataLayout::cell_size); |
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1035 } |
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1036 |
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1037 static ByteSize stack_slot_offset(int i) { |
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1038 return in_ByteSize(stack_slot_local_offset(i) * DataLayout::cell_size); |
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1039 } |
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1040 |
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1041 static ByteSize argument_type_offset(int i) { |
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1042 return in_ByteSize(argument_type_local_offset(i) * DataLayout::cell_size); |
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1043 } |
17900
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1044 |
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1045 static ByteSize return_only_size() { |
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1046 return ReturnTypeEntry::size() + in_ByteSize(header_cell_count() * DataLayout::cell_size); |
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1047 } |
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1048 |
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1049 }; |
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1050 |
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1051 // CallTypeData |
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1052 // |
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1053 // A CallTypeData is used to access profiling information about a non |
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1054 // virtual call for which we collect type information about arguments |
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1055 // and return value. |
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1056 class CallTypeData : public CounterData { |
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1057 private: |
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1058 // entries for arguments if any |
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1059 TypeStackSlotEntries _args; |
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1060 // entry for return type if any |
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1061 ReturnTypeEntry _ret; |
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1062 |
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1063 int cell_count_global_offset() const { |
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1064 return CounterData::static_cell_count() + TypeEntriesAtCall::cell_count_local_offset(); |
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1065 } |
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1066 |
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1067 // number of cells not counting the header |
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1068 int cell_count_no_header() const { |
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1069 return uint_at(cell_count_global_offset()); |
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1070 } |
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1071 |
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1072 void check_number_of_arguments(int total) { |
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1073 assert(number_of_arguments() == total, "should be set in DataLayout::initialize"); |
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1074 } |
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1075 |
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1076 public: |
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1077 CallTypeData(DataLayout* layout) : |
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1078 CounterData(layout), |
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1079 _args(CounterData::static_cell_count()+TypeEntriesAtCall::header_cell_count(), number_of_arguments()), |
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1080 _ret(cell_count() - ReturnTypeEntry::static_cell_count()) |
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1081 { |
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1082 assert(layout->tag() == DataLayout::call_type_data_tag, "wrong type"); |
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1083 // Some compilers (VC++) don't want this passed in member initialization list |
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1084 _args.set_profile_data(this); |
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1085 _ret.set_profile_data(this); |
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1086 } |
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1087 |
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1088 const TypeStackSlotEntries* args() const { |
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1089 assert(has_arguments(), "no profiling of arguments"); |
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1090 return &_args; |
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1091 } |
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1092 |
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1093 const ReturnTypeEntry* ret() const { |
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1094 assert(has_return(), "no profiling of return value"); |
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1095 return &_ret; |
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1096 } |
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1097 |
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1098 virtual bool is_CallTypeData() const { return true; } |
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1099 |
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1100 static int static_cell_count() { |
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1101 return -1; |
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1102 } |
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1103 |
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1104 static int compute_cell_count(BytecodeStream* stream) { |
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1105 return CounterData::static_cell_count() + TypeEntriesAtCall::compute_cell_count(stream); |
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1106 } |
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1107 |
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1108 static void initialize(DataLayout* dl, int cell_count) { |
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1109 TypeEntriesAtCall::initialize(dl, CounterData::static_cell_count(), cell_count); |
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1110 } |
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1111 |
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1112 virtual void post_initialize(BytecodeStream* stream, MethodData* mdo); |
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1113 |
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1114 virtual int cell_count() const { |
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1115 return CounterData::static_cell_count() + |
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1116 TypeEntriesAtCall::header_cell_count() + |
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1117 int_at_unchecked(cell_count_global_offset()); |
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1118 } |
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1119 |
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1120 int number_of_arguments() const { |
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1121 return cell_count_no_header() / TypeStackSlotEntries::per_arg_count(); |
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1122 } |
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1123 |
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1124 void set_argument_type(int i, Klass* k) { |
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1125 assert(has_arguments(), "no arguments!"); |
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1126 intptr_t current = _args.type(i); |
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1127 _args.set_type(i, TypeEntries::with_status(k, current)); |
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1128 } |
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1129 |
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1130 void set_return_type(Klass* k) { |
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1131 assert(has_return(), "no return!"); |
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1132 intptr_t current = _ret.type(); |
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1133 _ret.set_type(TypeEntries::with_status(k, current)); |
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1134 } |
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1135 |
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1136 // An entry for a return value takes less space than an entry for an |
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1137 // argument so if the number of cells exceeds the number of cells |
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1138 // needed for an argument, this object contains type information for |
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1139 // at least one argument. |
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1140 bool has_arguments() const { |
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1141 bool res = cell_count_no_header() >= TypeStackSlotEntries::per_arg_count(); |
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1142 assert (!res || TypeEntriesAtCall::arguments_profiling_enabled(), "no profiling of arguments"); |
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1143 return res; |
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1144 } |
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1145 |
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1146 // An entry for a return value takes less space than an entry for an |
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1147 // argument, so if the remainder of the number of cells divided by |
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1148 // the number of cells for an argument is not null, a return value |
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1149 // is profiled in this object. |
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1150 bool has_return() const { |
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1151 bool res = (cell_count_no_header() % TypeStackSlotEntries::per_arg_count()) != 0; |
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1152 assert (!res || TypeEntriesAtCall::return_profiling_enabled(), "no profiling of return values"); |
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1153 return res; |
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1154 } |
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1155 |
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1156 // Code generation support |
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1157 static ByteSize args_data_offset() { |
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1158 return cell_offset(CounterData::static_cell_count()) + TypeEntriesAtCall::args_data_offset(); |
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1159 } |
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1160 |
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1161 // GC support |
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1162 virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure) { |
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1163 if (has_arguments()) { |
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1164 _args.clean_weak_klass_links(is_alive_closure); |
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1165 } |
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1166 if (has_return()) { |
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1167 _ret.clean_weak_klass_links(is_alive_closure); |
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1168 } |
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1169 } |
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1170 |
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1171 #ifndef PRODUCT |
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1172 virtual void print_data_on(outputStream* st, const char* extra = NULL) const; |
0 | 1173 #endif |
1174 }; | |
1175 | |
1176 // ReceiverTypeData | |
1177 // | |
1178 // A ReceiverTypeData is used to access profiling information about a | |
1179 // dynamic type check. It consists of a counter which counts the total times | |
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1180 // that the check is reached, and a series of (Klass*, count) pairs |
0 | 1181 // which are used to store a type profile for the receiver of the check. |
1182 class ReceiverTypeData : public CounterData { | |
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1183 friend class VMStructs; |
0 | 1184 protected: |
1185 enum { | |
22298 | 1186 #if INCLUDE_JVMCI |
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1187 // Description of the different counters |
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1188 // ReceiverTypeData for instanceof/checkcast/aastore: |
23774 | 1189 // count is decremented for failed type checks |
1190 // JVMCI only: nonprofiled_count is incremented on type overflow | |
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1191 // VirtualCallData for invokevirtual/invokeinterface: |
23774 | 1192 // count is incremented on type overflow |
1193 // JVMCI only: nonprofiled_count is incremented on method overflow | |
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1194 |
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1195 // JVMCI is interested in knowing the percentage of type checks involving a type not explicitly in the profile |
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1196 nonprofiled_count_off_set = counter_cell_count, |
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1197 receiver0_offset, |
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1198 #else |
0 | 1199 receiver0_offset = counter_cell_count, |
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1200 #endif |
0 | 1201 count0_offset, |
1202 receiver_type_row_cell_count = (count0_offset + 1) - receiver0_offset | |
1203 }; | |
1204 | |
1205 public: | |
1206 ReceiverTypeData(DataLayout* layout) : CounterData(layout) { | |
1207 assert(layout->tag() == DataLayout::receiver_type_data_tag || | |
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1208 layout->tag() == DataLayout::virtual_call_data_tag || |
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1209 layout->tag() == DataLayout::virtual_call_type_data_tag, "wrong type"); |
0 | 1210 } |
1211 | |
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1212 virtual bool is_ReceiverTypeData() const { return true; } |
0 | 1213 |
1214 static int static_cell_count() { | |
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1215 return counter_cell_count + (uint) TypeProfileWidth * receiver_type_row_cell_count JVMCI_ONLY(+ 1); |
0 | 1216 } |
1217 | |
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1218 virtual int cell_count() const { |
0 | 1219 return static_cell_count(); |
1220 } | |
1221 | |
1222 // Direct accessors | |
1223 static uint row_limit() { | |
1224 return TypeProfileWidth; | |
1225 } | |
1226 static int receiver_cell_index(uint row) { | |
1227 return receiver0_offset + row * receiver_type_row_cell_count; | |
1228 } | |
1229 static int receiver_count_cell_index(uint row) { | |
1230 return count0_offset + row * receiver_type_row_cell_count; | |
1231 } | |
1232 | |
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1233 Klass* receiver(uint row) const { |
0 | 1234 assert(row < row_limit(), "oob"); |
1235 | |
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1236 Klass* recv = (Klass*)intptr_at(receiver_cell_index(row)); |
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1237 assert(recv == NULL || recv->is_klass(), "wrong type"); |
0 | 1238 return recv; |
1239 } | |
1240 | |
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1241 void set_receiver(uint row, Klass* k) { |
941 | 1242 assert((uint)row < row_limit(), "oob"); |
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1243 set_intptr_at(receiver_cell_index(row), (uintptr_t)k); |
941 | 1244 } |
1245 | |
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1246 uint receiver_count(uint row) const { |
0 | 1247 assert(row < row_limit(), "oob"); |
1248 return uint_at(receiver_count_cell_index(row)); | |
1249 } | |
1250 | |
941 | 1251 void set_receiver_count(uint row, uint count) { |
1252 assert(row < row_limit(), "oob"); | |
1253 set_uint_at(receiver_count_cell_index(row), count); | |
1254 } | |
1255 | |
1256 void clear_row(uint row) { | |
1257 assert(row < row_limit(), "oob"); | |
1251
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1258 // Clear total count - indicator of polymorphic call site. |
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1259 // The site may look like as monomorphic after that but |
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1260 // it allow to have more accurate profiling information because |
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1261 // there was execution phase change since klasses were unloaded. |
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1262 // If the site is still polymorphic then MDO will be updated |
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1263 // to reflect it. But it could be the case that the site becomes |
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1264 // only bimorphic. Then keeping total count not 0 will be wrong. |
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1265 // Even if we use monomorphic (when it is not) for compilation |
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1266 // we will only have trap, deoptimization and recompile again |
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1267 // with updated MDO after executing method in Interpreter. |
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1268 // An additional receiver will be recorded in the cleaned row |
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1269 // during next call execution. |
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1270 // |
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1271 // Note: our profiling logic works with empty rows in any slot. |
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1272 // We do sorting a profiling info (ciCallProfile) for compilation. |
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1273 // |
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|
1274 set_count(0); |
941 | 1275 set_receiver(row, NULL); |
1276 set_receiver_count(row, 0); | |
22298 | 1277 #if INCLUDE_JVMCI |
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1278 if (!this->is_VirtualCallData()) { |
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1279 // if this is a ReceiverTypeData for JVMCI, the nonprofiled_count |
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1280 // must also be reset (see "Description of the different counters" above) |
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1281 set_nonprofiled_count(0); |
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1282 } |
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1283 #endif |
941 | 1284 } |
1285 | |
0 | 1286 // Code generation support |
1287 static ByteSize receiver_offset(uint row) { | |
1288 return cell_offset(receiver_cell_index(row)); | |
1289 } | |
1290 static ByteSize receiver_count_offset(uint row) { | |
1291 return cell_offset(receiver_count_cell_index(row)); | |
1292 } | |
22298 | 1293 #if INCLUDE_JVMCI |
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1294 static ByteSize nonprofiled_receiver_count_offset() { |
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1295 return cell_offset(nonprofiled_count_off_set); |
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1296 } |
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1297 uint nonprofiled_count() const { |
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1298 return uint_at(nonprofiled_count_off_set); |
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1299 } |
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1300 void set_nonprofiled_count(uint count) { |
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1301 set_uint_at(nonprofiled_count_off_set, count); |
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1302 } |
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1303 #endif |
0 | 1304 static ByteSize receiver_type_data_size() { |
1305 return cell_offset(static_cell_count()); | |
1306 } | |
1307 | |
1308 // GC support | |
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1309 virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure); |
0 | 1310 |
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1311 #ifdef CC_INTERP |
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1312 static int receiver_type_data_size_in_bytes() { |
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1313 return cell_offset_in_bytes(static_cell_count()); |
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1314 } |
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1315 |
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1316 static Klass *receiver_unchecked(DataLayout* layout, uint row) { |
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1317 Klass* recv = (Klass*)layout->cell_at(receiver_cell_index(row)); |
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1318 return recv; |
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1319 } |
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1320 |
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1321 static void increment_receiver_count_no_overflow(DataLayout* layout, Klass *rcvr) { |
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1322 const int num_rows = row_limit(); |
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1323 // Receiver already exists? |
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1324 for (int row = 0; row < num_rows; row++) { |
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1325 if (receiver_unchecked(layout, row) == rcvr) { |
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1326 increment_uint_at_no_overflow(layout, receiver_count_cell_index(row)); |
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1327 return; |
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1328 } |
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1329 } |
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1330 // New receiver, find a free slot. |
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1331 for (int row = 0; row < num_rows; row++) { |
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1332 if (receiver_unchecked(layout, row) == NULL) { |
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1333 set_intptr_at(layout, receiver_cell_index(row), (intptr_t)rcvr); |
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1334 increment_uint_at_no_overflow(layout, receiver_count_cell_index(row)); |
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1335 return; |
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1336 } |
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1337 } |
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1338 // Receiver did not match any saved receiver and there is no empty row for it. |
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1339 // Increment total counter to indicate polymorphic case. |
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1340 increment_count_no_overflow(layout); |
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1341 } |
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1342 |
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1343 static DataLayout* advance(DataLayout* layout) { |
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1344 return (DataLayout*) (((address)layout) + (ssize_t)ReceiverTypeData::receiver_type_data_size_in_bytes()); |
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1345 } |
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1346 #endif // CC_INTERP |
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1347 |
0 | 1348 #ifndef PRODUCT |
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1349 void print_receiver_data_on(outputStream* st) const; |
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1350 void print_data_on(outputStream* st, const char* extra = NULL) const; |
0 | 1351 #endif |
1352 }; | |
1353 | |
1354 // VirtualCallData | |
1355 // | |
1356 // A VirtualCallData is used to access profiling information about a | |
1357 // virtual call. For now, it has nothing more than a ReceiverTypeData. | |
1358 class VirtualCallData : public ReceiverTypeData { | |
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1359 friend class VMStructs; |
0 | 1360 public: |
1361 VirtualCallData(DataLayout* layout) : ReceiverTypeData(layout) { | |
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1362 assert(layout->tag() == DataLayout::virtual_call_data_tag || |
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1363 layout->tag() == DataLayout::virtual_call_type_data_tag, "wrong type"); |
0 | 1364 } |
1365 | |
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1366 virtual bool is_VirtualCallData() const { return true; } |
0 | 1367 |
1368 static int static_cell_count() { | |
1369 // At this point we could add more profile state, e.g., for arguments. | |
1370 // But for now it's the same size as the base record type. | |
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1371 return ReceiverTypeData::static_cell_count() JVMCI_ONLY(+ (uint) MethodProfileWidth * receiver_type_row_cell_count); |
0 | 1372 } |
1373 | |
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1374 virtual int cell_count() const { |
0 | 1375 return static_cell_count(); |
1376 } | |
1377 | |
1378 // Direct accessors | |
1379 static ByteSize virtual_call_data_size() { | |
1380 return cell_offset(static_cell_count()); | |
1381 } | |
1382 | |
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1383 #ifdef CC_INTERP |
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1384 static int virtual_call_data_size_in_bytes() { |
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1385 return cell_offset_in_bytes(static_cell_count()); |
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1386 } |
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1387 |
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1388 static DataLayout* advance(DataLayout* layout) { |
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1389 return (DataLayout*) (((address)layout) + (ssize_t)VirtualCallData::virtual_call_data_size_in_bytes()); |
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1390 } |
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1391 #endif // CC_INTERP |
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1392 |
22298 | 1393 #if INCLUDE_JVMCI |
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1394 static ByteSize method_offset(uint row) { |
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1395 return cell_offset(method_cell_index(row)); |
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1396 } |
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1397 static ByteSize method_count_offset(uint row) { |
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1398 return cell_offset(method_count_cell_index(row)); |
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1399 } |
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1400 static int method_cell_index(uint row) { |
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1401 return receiver0_offset + (row + TypeProfileWidth) * receiver_type_row_cell_count; |
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1402 } |
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1403 static int method_count_cell_index(uint row) { |
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1404 return count0_offset + (row + TypeProfileWidth) * receiver_type_row_cell_count; |
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1405 } |
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1406 static uint method_row_limit() { |
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1407 return MethodProfileWidth; |
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1408 } |
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1409 |
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1410 Method* method(uint row) const { |
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1411 assert(row < method_row_limit(), "oob"); |
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1412 |
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1413 Method* method = (Method*)intptr_at(method_cell_index(row)); |
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1414 assert(method == NULL || method->is_method(), "must be"); |
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|
1415 return method; |
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1416 } |
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1417 |
13108
d84fa69a9874
added support for printing method profiles for virtual calls
Doug Simon <doug.simon@oracle.com>
parents:
13086
diff
changeset
|
1418 uint method_count(uint row) const { |
d84fa69a9874
added support for printing method profiles for virtual calls
Doug Simon <doug.simon@oracle.com>
parents:
13086
diff
changeset
|
1419 assert(row < method_row_limit(), "oob"); |
d84fa69a9874
added support for printing method profiles for virtual calls
Doug Simon <doug.simon@oracle.com>
parents:
13086
diff
changeset
|
1420 return uint_at(method_count_cell_index(row)); |
d84fa69a9874
added support for printing method profiles for virtual calls
Doug Simon <doug.simon@oracle.com>
parents:
13086
diff
changeset
|
1421 } |
d84fa69a9874
added support for printing method profiles for virtual calls
Doug Simon <doug.simon@oracle.com>
parents:
13086
diff
changeset
|
1422 |
9762
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1423 void set_method(uint row, Method* m) { |
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1424 assert((uint)row < method_row_limit(), "oob"); |
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1425 set_intptr_at(method_cell_index(row), (uintptr_t)m); |
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1426 } |
9760
c76b43ed5089
Added infrastructure for recording invoked methods in the profiling information.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9088
diff
changeset
|
1427 |
9762
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1428 void set_method_count(uint row, uint count) { |
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1429 assert(row < method_row_limit(), "oob"); |
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1430 set_uint_at(method_count_cell_index(row), count); |
0 | 1431 } |
1432 | |
9762
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1433 void clear_method_row(uint row) { |
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1434 assert(row < method_row_limit(), "oob"); |
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1435 // Clear total count - indicator of polymorphic call site (see comment for clear_row() in ReceiverTypeData). |
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1436 set_nonprofiled_count(0); |
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1437 set_method(row, NULL); |
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1438 set_method_count(row, 0); |
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1439 } |
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1440 |
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1441 // GC support |
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1442 virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure); |
14860
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14543
diff
changeset
|
1443 |
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14543
diff
changeset
|
1444 // Redefinition support |
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14543
diff
changeset
|
1445 virtual void clean_weak_method_links(); |
9762
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1446 #endif |
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1447 |
0 | 1448 #ifndef PRODUCT |
22298 | 1449 #if INCLUDE_JVMCI |
13108
d84fa69a9874
added support for printing method profiles for virtual calls
Doug Simon <doug.simon@oracle.com>
parents:
13086
diff
changeset
|
1450 void print_method_data_on(outputStream* st) const; |
d84fa69a9874
added support for printing method profiles for virtual calls
Doug Simon <doug.simon@oracle.com>
parents:
13086
diff
changeset
|
1451 #endif |
17728
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
13080
diff
changeset
|
1452 void print_data_on(outputStream* st, const char* extra = NULL) const; |
12875
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
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12316
diff
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|
1453 #endif |
d13d7aba8c12
8023657: New type profiling points: arguments to call
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12316
diff
changeset
|
1454 }; |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1455 |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1456 // VirtualCallTypeData |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1457 // |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1458 // A VirtualCallTypeData is used to access profiling information about |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1459 // a virtual call for which we collect type information about |
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
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diff
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|
1460 // arguments and return value. |
12875
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8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1461 class VirtualCallTypeData : public VirtualCallData { |
22572
c3b49e9d0f48
HotSpotMethodData shouldn't hardcode constants
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
22298
diff
changeset
|
1462 friend class VMStructs; |
12875
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1463 private: |
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1464 // entries for arguments if any |
12875
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
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|
1465 TypeStackSlotEntries _args; |
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
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12875
diff
changeset
|
1466 // entry for return type if any |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1467 ReturnTypeEntry _ret; |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
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12875
diff
changeset
|
1468 |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1469 int cell_count_global_offset() const { |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
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12875
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|
1470 return VirtualCallData::static_cell_count() + TypeEntriesAtCall::cell_count_local_offset(); |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
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diff
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|
1471 } |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1472 |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1473 // number of cells not counting the header |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1474 int cell_count_no_header() const { |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
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|
1475 return uint_at(cell_count_global_offset()); |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
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|
1476 } |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1477 |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1478 void check_number_of_arguments(int total) { |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1479 assert(number_of_arguments() == total, "should be set in DataLayout::initialize"); |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
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|
1480 } |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1481 |
12875
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roland
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12316
diff
changeset
|
1482 public: |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1483 VirtualCallTypeData(DataLayout* layout) : |
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1484 VirtualCallData(layout), |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1485 _args(VirtualCallData::static_cell_count()+TypeEntriesAtCall::header_cell_count(), number_of_arguments()), |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
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|
1486 _ret(cell_count() - ReturnTypeEntry::static_cell_count()) |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1487 { |
12875
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roland
parents:
12316
diff
changeset
|
1488 assert(layout->tag() == DataLayout::virtual_call_type_data_tag, "wrong type"); |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1489 // Some compilers (VC++) don't want this passed in member initialization list |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1490 _args.set_profile_data(this); |
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1491 _ret.set_profile_data(this); |
12875
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8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1492 } |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1493 |
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1494 const TypeStackSlotEntries* args() const { |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1495 assert(has_arguments(), "no profiling of arguments"); |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1496 return &_args; |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1497 } |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1498 |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1499 const ReturnTypeEntry* ret() const { |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1500 assert(has_return(), "no profiling of return value"); |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1501 return &_ret; |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1502 } |
12875
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8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1503 |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1504 virtual bool is_VirtualCallTypeData() const { return true; } |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1505 |
d13d7aba8c12
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parents:
12316
diff
changeset
|
1506 static int static_cell_count() { |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1507 return -1; |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1508 } |
d13d7aba8c12
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parents:
12316
diff
changeset
|
1509 |
d13d7aba8c12
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parents:
12316
diff
changeset
|
1510 static int compute_cell_count(BytecodeStream* stream) { |
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1511 return VirtualCallData::static_cell_count() + TypeEntriesAtCall::compute_cell_count(stream); |
12875
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parents:
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diff
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|
1512 } |
d13d7aba8c12
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parents:
12316
diff
changeset
|
1513 |
d13d7aba8c12
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parents:
12316
diff
changeset
|
1514 static void initialize(DataLayout* dl, int cell_count) { |
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
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|
1515 TypeEntriesAtCall::initialize(dl, VirtualCallData::static_cell_count(), cell_count); |
12875
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diff
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|
1516 } |
d13d7aba8c12
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12316
diff
changeset
|
1517 |
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1518 virtual void post_initialize(BytecodeStream* stream, MethodData* mdo); |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
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12875
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|
1519 |
12875
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12316
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|
1520 virtual int cell_count() const { |
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
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|
1521 return VirtualCallData::static_cell_count() + |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
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|
1522 TypeEntriesAtCall::header_cell_count() + |
ce0cc25bc5e2
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roland
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|
1523 int_at_unchecked(cell_count_global_offset()); |
12875
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diff
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|
1524 } |
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|
1525 |
12882
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roland
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12875
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changeset
|
1526 int number_of_arguments() const { |
ce0cc25bc5e2
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roland
parents:
12875
diff
changeset
|
1527 return cell_count_no_header() / TypeStackSlotEntries::per_arg_count(); |
12875
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|
1528 } |
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12316
diff
changeset
|
1529 |
d13d7aba8c12
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12316
diff
changeset
|
1530 void set_argument_type(int i, Klass* k) { |
12882
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8026054: New type profiling points: type of return values at calls
roland
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12875
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|
1531 assert(has_arguments(), "no arguments!"); |
12875
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12316
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|
1532 intptr_t current = _args.type(i); |
d13d7aba8c12
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12316
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|
1533 _args.set_type(i, TypeEntries::with_status(k, current)); |
d13d7aba8c12
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|
1534 } |
d13d7aba8c12
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|
1535 |
12882
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12875
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changeset
|
1536 void set_return_type(Klass* k) { |
ce0cc25bc5e2
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12875
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changeset
|
1537 assert(has_return(), "no return!"); |
ce0cc25bc5e2
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roland
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12875
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changeset
|
1538 intptr_t current = _ret.type(); |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
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12875
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changeset
|
1539 _ret.set_type(TypeEntries::with_status(k, current)); |
ce0cc25bc5e2
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roland
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12875
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|
1540 } |
ce0cc25bc5e2
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changeset
|
1541 |
ce0cc25bc5e2
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roland
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changeset
|
1542 // An entry for a return value takes less space than an entry for an |
ce0cc25bc5e2
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roland
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12875
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changeset
|
1543 // argument, so if the remainder of the number of cells divided by |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
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12875
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changeset
|
1544 // the number of cells for an argument is not null, a return value |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
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1545 // is profiled in this object. |
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1546 bool has_return() const { |
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1547 bool res = (cell_count_no_header() % TypeStackSlotEntries::per_arg_count()) != 0; |
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1548 assert (!res || TypeEntriesAtCall::return_profiling_enabled(), "no profiling of return values"); |
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1549 return res; |
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1550 } |
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1551 |
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1552 // An entry for a return value takes less space than an entry for an |
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1553 // argument so if the number of cells exceeds the number of cells |
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1554 // needed for an argument, this object contains type information for |
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1555 // at least one argument. |
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1556 bool has_arguments() const { |
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1557 bool res = cell_count_no_header() >= TypeStackSlotEntries::per_arg_count(); |
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1558 assert (!res || TypeEntriesAtCall::arguments_profiling_enabled(), "no profiling of arguments"); |
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1559 return res; |
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1560 } |
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1561 |
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1562 // Code generation support |
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1563 static ByteSize args_data_offset() { |
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1564 return cell_offset(VirtualCallData::static_cell_count()) + TypeEntriesAtCall::args_data_offset(); |
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1565 } |
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1566 |
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1567 // GC support |
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1568 virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure) { |
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1569 ReceiverTypeData::clean_weak_klass_links(is_alive_closure); |
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1570 if (has_arguments()) { |
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1571 _args.clean_weak_klass_links(is_alive_closure); |
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1572 } |
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1573 if (has_return()) { |
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1574 _ret.clean_weak_klass_links(is_alive_closure); |
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1575 } |
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1576 } |
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1577 |
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1578 #ifndef PRODUCT |
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1579 virtual void print_data_on(outputStream* st, const char* extra = NULL) const; |
0 | 1580 #endif |
1581 }; | |
1582 | |
1583 // RetData | |
1584 // | |
1585 // A RetData is used to access profiling information for a ret bytecode. | |
1586 // It is composed of a count of the number of times that the ret has | |
1587 // been executed, followed by a series of triples of the form | |
1588 // (bci, count, di) which count the number of times that some bci was the | |
1589 // target of the ret and cache a corresponding data displacement. | |
1590 class RetData : public CounterData { | |
1591 protected: | |
1592 enum { | |
1593 bci0_offset = counter_cell_count, | |
1594 count0_offset, | |
1595 displacement0_offset, | |
1596 ret_row_cell_count = (displacement0_offset + 1) - bci0_offset | |
1597 }; | |
1598 | |
1599 void set_bci(uint row, int bci) { | |
1600 assert((uint)row < row_limit(), "oob"); | |
1601 set_int_at(bci0_offset + row * ret_row_cell_count, bci); | |
1602 } | |
1603 void release_set_bci(uint row, int bci) { | |
1604 assert((uint)row < row_limit(), "oob"); | |
1605 // 'release' when setting the bci acts as a valid flag for other | |
1606 // threads wrt bci_count and bci_displacement. | |
1607 release_set_int_at(bci0_offset + row * ret_row_cell_count, bci); | |
1608 } | |
1609 void set_bci_count(uint row, uint count) { | |
1610 assert((uint)row < row_limit(), "oob"); | |
1611 set_uint_at(count0_offset + row * ret_row_cell_count, count); | |
1612 } | |
1613 void set_bci_displacement(uint row, int disp) { | |
1614 set_int_at(displacement0_offset + row * ret_row_cell_count, disp); | |
1615 } | |
1616 | |
1617 public: | |
1618 RetData(DataLayout* layout) : CounterData(layout) { | |
1619 assert(layout->tag() == DataLayout::ret_data_tag, "wrong type"); | |
1620 } | |
1621 | |
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1622 virtual bool is_RetData() const { return true; } |
0 | 1623 |
1624 enum { | |
1625 no_bci = -1 // value of bci when bci1/2 are not in use. | |
1626 }; | |
1627 | |
1628 static int static_cell_count() { | |
1629 return counter_cell_count + (uint) BciProfileWidth * ret_row_cell_count; | |
1630 } | |
1631 | |
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1632 virtual int cell_count() const { |
0 | 1633 return static_cell_count(); |
1634 } | |
1635 | |
1636 static uint row_limit() { | |
1637 return BciProfileWidth; | |
1638 } | |
1639 static int bci_cell_index(uint row) { | |
1640 return bci0_offset + row * ret_row_cell_count; | |
1641 } | |
1642 static int bci_count_cell_index(uint row) { | |
1643 return count0_offset + row * ret_row_cell_count; | |
1644 } | |
1645 static int bci_displacement_cell_index(uint row) { | |
1646 return displacement0_offset + row * ret_row_cell_count; | |
1647 } | |
1648 | |
1649 // Direct accessors | |
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1650 int bci(uint row) const { |
0 | 1651 return int_at(bci_cell_index(row)); |
1652 } | |
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1653 uint bci_count(uint row) const { |
0 | 1654 return uint_at(bci_count_cell_index(row)); |
1655 } | |
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1656 int bci_displacement(uint row) const { |
0 | 1657 return int_at(bci_displacement_cell_index(row)); |
1658 } | |
1659 | |
1660 // Interpreter Runtime support | |
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1661 address fixup_ret(int return_bci, MethodData* mdo); |
0 | 1662 |
1663 // Code generation support | |
1664 static ByteSize bci_offset(uint row) { | |
1665 return cell_offset(bci_cell_index(row)); | |
1666 } | |
1667 static ByteSize bci_count_offset(uint row) { | |
1668 return cell_offset(bci_count_cell_index(row)); | |
1669 } | |
1670 static ByteSize bci_displacement_offset(uint row) { | |
1671 return cell_offset(bci_displacement_cell_index(row)); | |
1672 } | |
1673 | |
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1674 #ifdef CC_INTERP |
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1675 static DataLayout* advance(MethodData *md, int bci); |
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1676 #endif // CC_INTERP |
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1677 |
0 | 1678 // Specific initialization. |
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1679 void post_initialize(BytecodeStream* stream, MethodData* mdo); |
0 | 1680 |
1681 #ifndef PRODUCT | |
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1682 void print_data_on(outputStream* st, const char* extra = NULL) const; |
0 | 1683 #endif |
1684 }; | |
1685 | |
1686 // BranchData | |
1687 // | |
1688 // A BranchData is used to access profiling data for a two-way branch. | |
1689 // It consists of taken and not_taken counts as well as a data displacement | |
1690 // for the taken case. | |
1691 class BranchData : public JumpData { | |
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1692 friend class VMStructs; |
0 | 1693 protected: |
1694 enum { | |
1695 not_taken_off_set = jump_cell_count, | |
1696 branch_cell_count | |
1697 }; | |
1698 | |
1699 void set_displacement(int displacement) { | |
1700 set_int_at(displacement_off_set, displacement); | |
1701 } | |
1702 | |
1703 public: | |
1704 BranchData(DataLayout* layout) : JumpData(layout) { | |
1705 assert(layout->tag() == DataLayout::branch_data_tag, "wrong type"); | |
1706 } | |
1707 | |
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1708 virtual bool is_BranchData() const { return true; } |
0 | 1709 |
1710 static int static_cell_count() { | |
1711 return branch_cell_count; | |
1712 } | |
1713 | |
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1714 virtual int cell_count() const { |
0 | 1715 return static_cell_count(); |
1716 } | |
1717 | |
1718 // Direct accessor | |
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1719 uint not_taken() const { |
0 | 1720 return uint_at(not_taken_off_set); |
1721 } | |
1722 | |
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1723 void set_not_taken(uint cnt) { |
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1724 set_uint_at(not_taken_off_set, cnt); |
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1725 } |
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1726 |
0 | 1727 uint inc_not_taken() { |
1728 uint cnt = not_taken() + 1; | |
1729 // Did we wrap? Will compiler screw us?? | |
1730 if (cnt == 0) cnt--; | |
1731 set_uint_at(not_taken_off_set, cnt); | |
1732 return cnt; | |
1733 } | |
1734 | |
1735 // Code generation support | |
1736 static ByteSize not_taken_offset() { | |
1737 return cell_offset(not_taken_off_set); | |
1738 } | |
1739 static ByteSize branch_data_size() { | |
1740 return cell_offset(branch_cell_count); | |
1741 } | |
1742 | |
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1743 #ifdef CC_INTERP |
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1744 static int branch_data_size_in_bytes() { |
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1745 return cell_offset_in_bytes(branch_cell_count); |
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1746 } |
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1747 |
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1748 static void increment_not_taken_count_no_overflow(DataLayout* layout) { |
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1749 increment_uint_at_no_overflow(layout, not_taken_off_set); |
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1750 } |
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1751 |
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1752 static DataLayout* advance_not_taken(DataLayout* layout) { |
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1753 return (DataLayout*) (((address)layout) + (ssize_t)BranchData::branch_data_size_in_bytes()); |
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1754 } |
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1755 #endif // CC_INTERP |
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1756 |
0 | 1757 // Specific initialization. |
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1758 void post_initialize(BytecodeStream* stream, MethodData* mdo); |
0 | 1759 |
1760 #ifndef PRODUCT | |
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1761 void print_data_on(outputStream* st, const char* extra = NULL) const; |
0 | 1762 #endif |
1763 }; | |
1764 | |
1765 // ArrayData | |
1766 // | |
1767 // A ArrayData is a base class for accessing profiling data which does | |
1768 // not have a statically known size. It consists of an array length | |
1769 // and an array start. | |
1770 class ArrayData : public ProfileData { | |
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1771 friend class VMStructs; |
0 | 1772 protected: |
1773 friend class DataLayout; | |
1774 | |
1775 enum { | |
1776 array_len_off_set, | |
1777 array_start_off_set | |
1778 }; | |
1779 | |
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1780 uint array_uint_at(int index) const { |
0 | 1781 int aindex = index + array_start_off_set; |
1782 return uint_at(aindex); | |
1783 } | |
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1784 int array_int_at(int index) const { |
0 | 1785 int aindex = index + array_start_off_set; |
1786 return int_at(aindex); | |
1787 } | |
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1788 oop array_oop_at(int index) const { |
0 | 1789 int aindex = index + array_start_off_set; |
1790 return oop_at(aindex); | |
1791 } | |
1792 void array_set_int_at(int index, int value) { | |
1793 int aindex = index + array_start_off_set; | |
1794 set_int_at(aindex, value); | |
1795 } | |
1796 | |
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1797 #ifdef CC_INTERP |
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1798 // Static low level accessors for DataLayout with ArrayData's semantics. |
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1799 |
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1800 static void increment_array_uint_at_no_overflow(DataLayout* layout, int index) { |
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1801 int aindex = index + array_start_off_set; |
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1802 increment_uint_at_no_overflow(layout, aindex); |
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1803 } |
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1804 |
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1805 static int array_int_at(DataLayout* layout, int index) { |
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1806 int aindex = index + array_start_off_set; |
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1807 return int_at(layout, aindex); |
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1808 } |
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1809 #endif // CC_INTERP |
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1810 |
0 | 1811 // Code generation support for subclasses. |
1812 static ByteSize array_element_offset(int index) { | |
1813 return cell_offset(array_start_off_set + index); | |
1814 } | |
1815 | |
1816 public: | |
1817 ArrayData(DataLayout* layout) : ProfileData(layout) {} | |
1818 | |
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1819 virtual bool is_ArrayData() const { return true; } |
0 | 1820 |
1821 static int static_cell_count() { | |
1822 return -1; | |
1823 } | |
1824 | |
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1825 int array_len() const { |
0 | 1826 return int_at_unchecked(array_len_off_set); |
1827 } | |
1828 | |
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1829 virtual int cell_count() const { |
0 | 1830 return array_len() + 1; |
1831 } | |
1832 | |
1833 // Code generation support | |
1834 static ByteSize array_len_offset() { | |
1835 return cell_offset(array_len_off_set); | |
1836 } | |
1837 static ByteSize array_start_offset() { | |
1838 return cell_offset(array_start_off_set); | |
1839 } | |
1840 }; | |
1841 | |
1842 // MultiBranchData | |
1843 // | |
1844 // A MultiBranchData is used to access profiling information for | |
1845 // a multi-way branch (*switch bytecodes). It consists of a series | |
1846 // of (count, displacement) pairs, which count the number of times each | |
1847 // case was taken and specify the data displacment for each branch target. | |
1848 class MultiBranchData : public ArrayData { | |
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1849 friend class VMStructs; |
0 | 1850 protected: |
1851 enum { | |
1852 default_count_off_set, | |
1853 default_disaplacement_off_set, | |
1854 case_array_start | |
1855 }; | |
1856 enum { | |
1857 relative_count_off_set, | |
1858 relative_displacement_off_set, | |
1859 per_case_cell_count | |
1860 }; | |
1861 | |
1862 void set_default_displacement(int displacement) { | |
1863 array_set_int_at(default_disaplacement_off_set, displacement); | |
1864 } | |
1865 void set_displacement_at(int index, int displacement) { | |
1866 array_set_int_at(case_array_start + | |
1867 index * per_case_cell_count + | |
1868 relative_displacement_off_set, | |
1869 displacement); | |
1870 } | |
1871 | |
1872 public: | |
1873 MultiBranchData(DataLayout* layout) : ArrayData(layout) { | |
1874 assert(layout->tag() == DataLayout::multi_branch_data_tag, "wrong type"); | |
1875 } | |
1876 | |
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1877 virtual bool is_MultiBranchData() const { return true; } |
0 | 1878 |
1879 static int compute_cell_count(BytecodeStream* stream); | |
1880 | |
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1881 int number_of_cases() const { |
0 | 1882 int alen = array_len() - 2; // get rid of default case here. |
1883 assert(alen % per_case_cell_count == 0, "must be even"); | |
1884 return (alen / per_case_cell_count); | |
1885 } | |
1886 | |
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1887 uint default_count() const { |
0 | 1888 return array_uint_at(default_count_off_set); |
1889 } | |
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1890 int default_displacement() const { |
0 | 1891 return array_int_at(default_disaplacement_off_set); |
1892 } | |
1893 | |
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1894 uint count_at(int index) const { |
0 | 1895 return array_uint_at(case_array_start + |
1896 index * per_case_cell_count + | |
1897 relative_count_off_set); | |
1898 } | |
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1899 int displacement_at(int index) const { |
0 | 1900 return array_int_at(case_array_start + |
1901 index * per_case_cell_count + | |
1902 relative_displacement_off_set); | |
1903 } | |
1904 | |
1905 // Code generation support | |
1906 static ByteSize default_count_offset() { | |
1907 return array_element_offset(default_count_off_set); | |
1908 } | |
1909 static ByteSize default_displacement_offset() { | |
1910 return array_element_offset(default_disaplacement_off_set); | |
1911 } | |
1912 static ByteSize case_count_offset(int index) { | |
1913 return case_array_offset() + | |
1914 (per_case_size() * index) + | |
1915 relative_count_offset(); | |
1916 } | |
1917 static ByteSize case_array_offset() { | |
1918 return array_element_offset(case_array_start); | |
1919 } | |
1920 static ByteSize per_case_size() { | |
1921 return in_ByteSize(per_case_cell_count) * cell_size; | |
1922 } | |
1923 static ByteSize relative_count_offset() { | |
1924 return in_ByteSize(relative_count_off_set) * cell_size; | |
1925 } | |
1926 static ByteSize relative_displacement_offset() { | |
1927 return in_ByteSize(relative_displacement_off_set) * cell_size; | |
1928 } | |
1929 | |
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1930 #ifdef CC_INTERP |
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1931 static void increment_count_no_overflow(DataLayout* layout, int index) { |
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1932 if (index == -1) { |
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1933 increment_array_uint_at_no_overflow(layout, default_count_off_set); |
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1934 } else { |
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1935 increment_array_uint_at_no_overflow(layout, case_array_start + |
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1936 index * per_case_cell_count + |
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1937 relative_count_off_set); |
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1938 } |
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1939 } |
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1940 |
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1941 static DataLayout* advance(DataLayout* layout, int index) { |
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1942 if (index == -1) { |
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1943 return (DataLayout*) (((address)layout) + (ssize_t)array_int_at(layout, default_disaplacement_off_set)); |
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1944 } else { |
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1945 return (DataLayout*) (((address)layout) + (ssize_t)array_int_at(layout, case_array_start + |
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1946 index * per_case_cell_count + |
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1947 relative_displacement_off_set)); |
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1948 } |
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1949 } |
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1950 #endif // CC_INTERP |
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1951 |
0 | 1952 // Specific initialization. |
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1953 void post_initialize(BytecodeStream* stream, MethodData* mdo); |
0 | 1954 |
1955 #ifndef PRODUCT | |
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1956 void print_data_on(outputStream* st, const char* extra = NULL) const; |
0 | 1957 #endif |
1958 }; | |
1959 | |
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1960 class ArgInfoData : public ArrayData { |
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1961 |
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1962 public: |
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1963 ArgInfoData(DataLayout* layout) : ArrayData(layout) { |
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1964 assert(layout->tag() == DataLayout::arg_info_data_tag, "wrong type"); |
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1965 } |
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1966 |
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1967 virtual bool is_ArgInfoData() const { return true; } |
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1968 |
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1969 |
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1970 int number_of_args() const { |
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1971 return array_len(); |
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1972 } |
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1973 |
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1974 uint arg_modified(int arg) const { |
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1975 return array_uint_at(arg); |
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1976 } |
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1977 |
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1978 void set_arg_modified(int arg, uint val) { |
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1979 array_set_int_at(arg, val); |
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1980 } |
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1981 |
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1982 #ifndef PRODUCT |
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1983 void print_data_on(outputStream* st, const char* extra = NULL) const; |
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1984 #endif |
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1985 }; |
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1986 |
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1987 // ParametersTypeData |
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1988 // |
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1989 // A ParametersTypeData is used to access profiling information about |
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1990 // types of parameters to a method |
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1991 class ParametersTypeData : public ArrayData { |
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1992 |
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1993 private: |
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1994 TypeStackSlotEntries _parameters; |
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1995 |
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1996 static int stack_slot_local_offset(int i) { |
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1997 assert_profiling_enabled(); |
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1998 return array_start_off_set + TypeStackSlotEntries::stack_slot_local_offset(i); |
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1999 } |
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2000 |
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2001 static int type_local_offset(int i) { |
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2002 assert_profiling_enabled(); |
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2003 return array_start_off_set + TypeStackSlotEntries::type_local_offset(i); |
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2004 } |
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2005 |
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2006 static bool profiling_enabled(); |
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2007 static void assert_profiling_enabled() { |
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2008 assert(profiling_enabled(), "method parameters profiling should be on"); |
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2009 } |
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2010 |
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2011 public: |
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2012 ParametersTypeData(DataLayout* layout) : ArrayData(layout), _parameters(1, number_of_parameters()) { |
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2013 assert(layout->tag() == DataLayout::parameters_type_data_tag, "wrong type"); |
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2014 // Some compilers (VC++) don't want this passed in member initialization list |
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2015 _parameters.set_profile_data(this); |
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2016 } |
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2017 |
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2018 static int compute_cell_count(Method* m); |
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2019 |
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2020 virtual bool is_ParametersTypeData() const { return true; } |
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2021 |
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2022 virtual void post_initialize(BytecodeStream* stream, MethodData* mdo); |
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2023 |
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2024 int number_of_parameters() const { |
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2025 return array_len() / TypeStackSlotEntries::per_arg_count(); |
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2026 } |
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2027 |
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2028 const TypeStackSlotEntries* parameters() const { return &_parameters; } |
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2029 |
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2030 uint stack_slot(int i) const { |
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2031 return _parameters.stack_slot(i); |
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2032 } |
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2033 |
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2034 void set_type(int i, Klass* k) { |
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2035 intptr_t current = _parameters.type(i); |
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2036 _parameters.set_type(i, TypeEntries::with_status((intptr_t)k, current)); |
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2037 } |
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|
2038 |
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|
2039 virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure) { |
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2040 _parameters.clean_weak_klass_links(is_alive_closure); |
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2041 } |
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2042 |
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2043 #ifndef PRODUCT |
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2044 virtual void print_data_on(outputStream* st, const char* extra = NULL) const; |
12962
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2045 #endif |
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2046 |
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2047 static ByteSize stack_slot_offset(int i) { |
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2048 return cell_offset(stack_slot_local_offset(i)); |
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2049 } |
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2050 |
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2051 static ByteSize type_offset(int i) { |
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2052 return cell_offset(type_local_offset(i)); |
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2053 } |
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2054 }; |
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2055 |
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2056 // SpeculativeTrapData |
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2057 // |
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2058 // A SpeculativeTrapData is used to record traps due to type |
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2059 // speculation. It records the root of the compilation: that type |
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2060 // speculation is wrong in the context of one compilation (for |
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2061 // method1) doesn't mean it's wrong in the context of another one (for |
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2062 // method2). Type speculation could have more/different data in the |
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2063 // context of the compilation of method2 and it's worthwhile to try an |
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2064 // optimization that failed for compilation of method1 in the context |
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2065 // of compilation of method2. |
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2066 // Space for SpeculativeTrapData entries is allocated from the extra |
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2067 // data space in the MDO. If we run out of space, the trap data for |
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2068 // the ProfileData at that bci is updated. |
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2069 class SpeculativeTrapData : public ProfileData { |
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2070 protected: |
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2071 enum { |
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2072 method_offset, |
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2073 speculative_trap_cell_count |
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2074 }; |
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2075 public: |
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2076 SpeculativeTrapData(DataLayout* layout) : ProfileData(layout) { |
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2077 assert(layout->tag() == DataLayout::speculative_trap_data_tag, "wrong type"); |
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2078 } |
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2079 |
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2080 virtual bool is_SpeculativeTrapData() const { return true; } |
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2081 |
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2082 static int static_cell_count() { |
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2083 return speculative_trap_cell_count; |
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2084 } |
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2085 |
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2086 virtual int cell_count() const { |
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2087 return static_cell_count(); |
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2088 } |
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2089 |
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2090 // Direct accessor |
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2091 Method* method() const { |
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2092 return (Method*)intptr_at(method_offset); |
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2093 } |
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2094 |
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2095 void set_method(Method* m) { |
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2096 set_intptr_at(method_offset, (intptr_t)m); |
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2097 } |
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2098 |
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2099 #ifndef PRODUCT |
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2100 virtual void print_data_on(outputStream* st, const char* extra = NULL) const; |
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2101 #endif |
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2102 }; |
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2103 |
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2104 // MethodData* |
0 | 2105 // |
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2106 // A MethodData* holds information which has been collected about |
0 | 2107 // a method. Its layout looks like this: |
2108 // | |
2109 // ----------------------------- | |
2110 // | header | | |
2111 // | klass | | |
2112 // ----------------------------- | |
2113 // | method | | |
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2114 // | size of the MethodData* | |
0 | 2115 // ----------------------------- |
2116 // | Data entries... | | |
2117 // | (variable size) | | |
2118 // | | | |
2119 // . . | |
2120 // . . | |
2121 // . . | |
2122 // | | | |
2123 // ----------------------------- | |
2124 // | |
2125 // The data entry area is a heterogeneous array of DataLayouts. Each | |
2126 // DataLayout in the array corresponds to a specific bytecode in the | |
2127 // method. The entries in the array are sorted by the corresponding | |
2128 // bytecode. Access to the data is via resource-allocated ProfileData, | |
2129 // which point to the underlying blocks of DataLayout structures. | |
2130 // | |
2131 // During interpretation, if profiling in enabled, the interpreter | |
2132 // maintains a method data pointer (mdp), which points at the entry | |
2133 // in the array corresponding to the current bci. In the course of | |
2134 // intepretation, when a bytecode is encountered that has profile data | |
2135 // associated with it, the entry pointed to by mdp is updated, then the | |
2136 // mdp is adjusted to point to the next appropriate DataLayout. If mdp | |
2137 // is NULL to begin with, the interpreter assumes that the current method | |
2138 // is not (yet) being profiled. | |
2139 // | |
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2140 // In MethodData* parlance, "dp" is a "data pointer", the actual address |
0 | 2141 // of a DataLayout element. A "di" is a "data index", the offset in bytes |
2142 // from the base of the data entry array. A "displacement" is the byte offset | |
2143 // in certain ProfileData objects that indicate the amount the mdp must be | |
2144 // adjusted in the event of a change in control flow. | |
2145 // | |
2146 | |
14420
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2147 CC_INTERP_ONLY(class BytecodeInterpreter;) |
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2148 |
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2149 class MethodData : public Metadata { |
0 | 2150 friend class VMStructs; |
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2151 CC_INTERP_ONLY(friend class BytecodeInterpreter;) |
0 | 2152 private: |
2153 friend class ProfileData; | |
2154 | |
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2155 // Back pointer to the Method* |
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2156 Method* _method; |
0 | 2157 |
2158 // Size of this oop in bytes | |
2159 int _size; | |
2160 | |
2161 // Cached hint for bci_to_dp and bci_to_data | |
2162 int _hint_di; | |
2163 | |
17733
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2164 Mutex _extra_data_lock; |
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2165 |
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2166 MethodData(methodHandle method, int size, TRAPS); |
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2167 public: |
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2168 static MethodData* allocate(ClassLoaderData* loader_data, methodHandle method, TRAPS); |
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2169 MethodData() : _extra_data_lock(Monitor::leaf, "MDO extra data lock") {}; // For ciMethodData |
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2170 |
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2171 bool is_methodData() const volatile { return true; } |
18137
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|
2172 void initialize(); |
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2173 |
0 | 2174 // Whole-method sticky bits and flags |
2175 enum { | |
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2176 _trap_hist_limit = 20 JVMCI_ONLY(+5), // decoupled from Deoptimization::Reason_LIMIT |
0 | 2177 _trap_hist_mask = max_jubyte, |
2178 _extra_data_count = 4 // extra DataLayout headers, for trap history | |
2179 }; // Public flag values | |
2180 private: | |
2181 uint _nof_decompiles; // count of all nmethod removals | |
2182 uint _nof_overflow_recompiles; // recompile count, excluding recomp. bits | |
2183 uint _nof_overflow_traps; // trap count, excluding _trap_hist | |
2184 union { | |
2185 intptr_t _align; | |
23773
5796b1867b68
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|
2186 u1 _array[JVMCI_ONLY(2 *) _trap_hist_limit]; |
0 | 2187 } _trap_hist; |
2188 | |
2189 // Support for interprocedural escape analysis, from Thomas Kotzmann. | |
2190 intx _eflags; // flags on escape information | |
2191 intx _arg_local; // bit set of non-escaping arguments | |
2192 intx _arg_stack; // bit set of stack-allocatable arguments | |
2193 intx _arg_returned; // bit set of returned arguments | |
2194 | |
1783 | 2195 int _creation_mileage; // method mileage at MDO creation |
2196 | |
2197 // How many invocations has this MDO seen? | |
2198 // These counters are used to determine the exact age of MDO. | |
2199 // We need those because in tiered a method can be concurrently | |
2200 // executed at different levels. | |
2201 InvocationCounter _invocation_counter; | |
2202 // Same for backedges. | |
2203 InvocationCounter _backedge_counter; | |
2252 | 2204 // Counter values at the time profiling started. |
2205 int _invocation_counter_start; | |
2206 int _backedge_counter_start; | |
17780 | 2207 |
2208 #if INCLUDE_RTM_OPT | |
2209 // State of RTM code generation during compilation of the method | |
2210 int _rtm_state; | |
2211 #endif | |
2212 | |
1783 | 2213 // Number of loops and blocks is computed when compiling the first |
2214 // time with C1. It is used to determine if method is trivial. | |
2215 short _num_loops; | |
2216 short _num_blocks; | |
2217 // Does this method contain anything worth profiling? | |
20651
600c44255e5f
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|
2218 enum WouldProfile {unknown, no_profile, profile}; |
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|
2219 WouldProfile _would_profile; |
0 | 2220 |
22298 | 2221 #if INCLUDE_JVMCI |
21545
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|
2222 // Support for HotSpotMethodData.setCompiledIRSize(int) |
a04dfbf81bc4
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|
2223 int _jvmci_ir_size; |
14543
12eaf1a47a90
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Doug Simon <doug.simon@oracle.com>
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14518
diff
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|
2224 #endif |
12eaf1a47a90
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Doug Simon <doug.simon@oracle.com>
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14518
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|
2225 |
0 | 2226 // Size of _data array in bytes. (Excludes header and extra_data fields.) |
2227 int _data_size; | |
2228 | |
12962
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2229 // data index for the area dedicated to parameters. -1 if no |
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|
2230 // parameter profiling. |
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|
2231 int _parameters_type_data_di; |
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|
2232 |
0 | 2233 // Beginning of the data entries |
2234 intptr_t _data[1]; | |
2235 | |
2236 // Helper for size computation | |
2237 static int compute_data_size(BytecodeStream* stream); | |
2238 static int bytecode_cell_count(Bytecodes::Code code); | |
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2239 static bool is_speculative_trap_bytecode(Bytecodes::Code code); |
0 | 2240 enum { no_profile_data = -1, variable_cell_count = -2 }; |
2241 | |
2242 // Helper for initialization | |
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2243 DataLayout* data_layout_at(int data_index) const { |
0 | 2244 assert(data_index % sizeof(intptr_t) == 0, "unaligned"); |
2245 return (DataLayout*) (((address)_data) + data_index); | |
2246 } | |
2247 | |
2248 // Initialize an individual data segment. Returns the size of | |
2249 // the segment in bytes. | |
2250 int initialize_data(BytecodeStream* stream, int data_index); | |
2251 | |
2252 // Helper for data_at | |
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2253 DataLayout* limit_data_position() const { |
0 | 2254 return (DataLayout*)((address)data_base() + _data_size); |
2255 } | |
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2256 bool out_of_bounds(int data_index) const { |
0 | 2257 return data_index >= data_size(); |
2258 } | |
2259 | |
2260 // Give each of the data entries a chance to perform specific | |
2261 // data initialization. | |
2262 void post_initialize(BytecodeStream* stream); | |
2263 | |
2264 // hint accessors | |
2265 int hint_di() const { return _hint_di; } | |
2266 void set_hint_di(int di) { | |
2267 assert(!out_of_bounds(di), "hint_di out of bounds"); | |
2268 _hint_di = di; | |
2269 } | |
2270 ProfileData* data_before(int bci) { | |
2271 // avoid SEGV on this edge case | |
2272 if (data_size() == 0) | |
2273 return NULL; | |
2274 int hint = hint_di(); | |
2275 if (data_layout_at(hint)->bci() <= bci) | |
2276 return data_at(hint); | |
2277 return first_data(); | |
2278 } | |
2279 | |
2280 // What is the index of the first data entry? | |
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2281 int first_di() const { return 0; } |
0 | 2282 |
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2283 ProfileData* bci_to_extra_data_helper(int bci, Method* m, DataLayout*& dp, bool concurrent); |
0 | 2284 // Find or create an extra ProfileData: |
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2285 ProfileData* bci_to_extra_data(int bci, Method* m, bool create_if_missing); |
0 | 2286 |
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2287 // return the argument info cell |
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2288 ArgInfoData *arg_info(); |
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2289 |
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2290 enum { |
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2291 no_type_profile = 0, |
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2292 type_profile_jsr292 = 1, |
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2293 type_profile_all = 2 |
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2294 }; |
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2295 |
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2296 static bool profile_jsr292(methodHandle m, int bci); |
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2297 static int profile_arguments_flag(); |
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2298 static bool profile_all_arguments(); |
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2299 static bool profile_arguments_for_invoke(methodHandle m, int bci); |
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2300 static int profile_return_flag(); |
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2301 static bool profile_all_return(); |
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2302 static bool profile_return_for_invoke(methodHandle m, int bci); |
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2303 static int profile_parameters_flag(); |
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2304 static bool profile_parameters_jsr292_only(); |
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2305 static bool profile_all_parameters(); |
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2306 |
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2307 void clean_extra_data(BoolObjectClosure* is_alive); |
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2308 void clean_extra_data_helper(DataLayout* dp, int shift, bool reset = false); |
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2309 void verify_extra_data_clean(BoolObjectClosure* is_alive); |
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2310 |
0 | 2311 public: |
2312 static int header_size() { | |
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2313 return sizeof(MethodData)/wordSize; |
0 | 2314 } |
2315 | |
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2316 // Compute the size of a MethodData* before it is created. |
0 | 2317 static int compute_allocation_size_in_bytes(methodHandle method); |
2318 static int compute_allocation_size_in_words(methodHandle method); | |
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2319 static int compute_extra_data_count(int data_size, int empty_bc_count, bool needs_speculative_traps); |
0 | 2320 |
2321 // Determine if a given bytecode can have profile information. | |
2322 static bool bytecode_has_profile(Bytecodes::Code code) { | |
2323 return bytecode_cell_count(code) != no_profile_data; | |
2324 } | |
2325 | |
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2326 // reset into original state |
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2327 void init(); |
0 | 2328 |
2329 // My size | |
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2330 int size_in_bytes() const { return _size; } |
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2331 int size() const { return align_object_size(align_size_up(_size, BytesPerWord)/BytesPerWord); } |
7956 | 2332 #if INCLUDE_SERVICES |
2333 void collect_statistics(KlassSizeStats *sz) const; | |
2334 #endif | |
0 | 2335 |
2336 int creation_mileage() const { return _creation_mileage; } | |
2337 void set_creation_mileage(int x) { _creation_mileage = x; } | |
1783 | 2338 |
2339 int invocation_count() { | |
2340 if (invocation_counter()->carry()) { | |
2341 return InvocationCounter::count_limit; | |
2342 } | |
2343 return invocation_counter()->count(); | |
2344 } | |
2345 int backedge_count() { | |
2346 if (backedge_counter()->carry()) { | |
2347 return InvocationCounter::count_limit; | |
2348 } | |
2349 return backedge_counter()->count(); | |
2350 } | |
2351 | |
2252 | 2352 int invocation_count_start() { |
2353 if (invocation_counter()->carry()) { | |
2354 return 0; | |
2355 } | |
2356 return _invocation_counter_start; | |
2357 } | |
2358 | |
2359 int backedge_count_start() { | |
2360 if (backedge_counter()->carry()) { | |
2361 return 0; | |
2362 } | |
2363 return _backedge_counter_start; | |
2364 } | |
2365 | |
2366 int invocation_count_delta() { return invocation_count() - invocation_count_start(); } | |
2367 int backedge_count_delta() { return backedge_count() - backedge_count_start(); } | |
2368 | |
2369 void reset_start_counters() { | |
2370 _invocation_counter_start = invocation_count(); | |
2371 _backedge_counter_start = backedge_count(); | |
2372 } | |
2373 | |
1783 | 2374 InvocationCounter* invocation_counter() { return &_invocation_counter; } |
2375 InvocationCounter* backedge_counter() { return &_backedge_counter; } | |
2376 | |
17780 | 2377 #if INCLUDE_RTM_OPT |
2378 int rtm_state() const { | |
2379 return _rtm_state; | |
2380 } | |
2381 void set_rtm_state(RTMState rstate) { | |
2382 _rtm_state = (int)rstate; | |
2383 } | |
2384 void atomic_set_rtm_state(RTMState rstate) { | |
2385 Atomic::store((int)rstate, &_rtm_state); | |
2386 } | |
2387 | |
2388 static int rtm_state_offset_in_bytes() { | |
2389 return offset_of(MethodData, _rtm_state); | |
2390 } | |
2391 #endif | |
2392 | |
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2393 void set_would_profile(bool p) { _would_profile = p ? profile : no_profile; } |
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2394 bool would_profile() const { return _would_profile != no_profile; } |
1783 | 2395 |
2396 int num_loops() const { return _num_loops; } | |
2397 void set_num_loops(int n) { _num_loops = n; } | |
2398 int num_blocks() const { return _num_blocks; } | |
2399 void set_num_blocks(int n) { _num_blocks = n; } | |
2400 | |
0 | 2401 bool is_mature() const; // consult mileage and ProfileMaturityPercentage |
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2402 static int mileage_of(Method* m); |
0 | 2403 |
2404 // Support for interprocedural escape analysis, from Thomas Kotzmann. | |
2405 enum EscapeFlag { | |
2406 estimated = 1 << 0, | |
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2407 return_local = 1 << 1, |
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2408 return_allocated = 1 << 2, |
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2409 allocated_escapes = 1 << 3, |
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2410 unknown_modified = 1 << 4 |
0 | 2411 }; |
2412 | |
2413 intx eflags() { return _eflags; } | |
2414 intx arg_local() { return _arg_local; } | |
2415 intx arg_stack() { return _arg_stack; } | |
2416 intx arg_returned() { return _arg_returned; } | |
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2417 uint arg_modified(int a) { ArgInfoData *aid = arg_info(); |
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2418 assert(aid != NULL, "arg_info must be not null"); |
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2419 assert(a >= 0 && a < aid->number_of_args(), "valid argument number"); |
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2420 return aid->arg_modified(a); } |
0 | 2421 |
2422 void set_eflags(intx v) { _eflags = v; } | |
2423 void set_arg_local(intx v) { _arg_local = v; } | |
2424 void set_arg_stack(intx v) { _arg_stack = v; } | |
2425 void set_arg_returned(intx v) { _arg_returned = v; } | |
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2426 void set_arg_modified(int a, uint v) { ArgInfoData *aid = arg_info(); |
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2427 assert(aid != NULL, "arg_info must be not null"); |
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2428 assert(a >= 0 && a < aid->number_of_args(), "valid argument number"); |
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2429 aid->set_arg_modified(a, v); } |
0 | 2430 |
2431 void clear_escape_info() { _eflags = _arg_local = _arg_stack = _arg_returned = 0; } | |
2432 | |
2433 // Location and size of data area | |
2434 address data_base() const { | |
2435 return (address) _data; | |
2436 } | |
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2437 int data_size() const { |
0 | 2438 return _data_size; |
2439 } | |
2440 | |
2441 // Accessors | |
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2442 Method* method() const { return _method; } |
0 | 2443 |
2444 // Get the data at an arbitrary (sort of) data index. | |
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2445 ProfileData* data_at(int data_index) const; |
0 | 2446 |
2447 // Walk through the data in order. | |
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2448 ProfileData* first_data() const { return data_at(first_di()); } |
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2449 ProfileData* next_data(ProfileData* current) const; |
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2450 bool is_valid(ProfileData* current) const { return current != NULL; } |
0 | 2451 |
2452 // Convert a dp (data pointer) to a di (data index). | |
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2453 int dp_to_di(address dp) const { |
0 | 2454 return dp - ((address)_data); |
2455 } | |
2456 | |
2457 address di_to_dp(int di) { | |
2458 return (address)data_layout_at(di); | |
2459 } | |
2460 | |
2461 // bci to di/dp conversion. | |
2462 address bci_to_dp(int bci); | |
2463 int bci_to_di(int bci) { | |
2464 return dp_to_di(bci_to_dp(bci)); | |
2465 } | |
2466 | |
2467 // Get the data at an arbitrary bci, or NULL if there is none. | |
2468 ProfileData* bci_to_data(int bci); | |
2469 | |
2470 // Same, but try to create an extra_data record if one is needed: | |
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2471 ProfileData* allocate_bci_to_data(int bci, Method* m) { |
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2472 ProfileData* data = NULL; |
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2473 // If m not NULL, try to allocate a SpeculativeTrapData entry |
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2474 if (m == NULL) { |
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2475 data = bci_to_data(bci); |
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2476 } |
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2477 if (data != NULL) { |
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2478 return data; |
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2479 } |
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2480 data = bci_to_extra_data(bci, m, true); |
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2481 if (data != NULL) { |
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2482 return data; |
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2483 } |
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2484 // If SpeculativeTrapData allocation fails try to allocate a |
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2485 // regular entry |
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2486 data = bci_to_data(bci); |
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2487 if (data != NULL) { |
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2488 return data; |
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2489 } |
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2490 return bci_to_extra_data(bci, NULL, true); |
0 | 2491 } |
2492 | |
2493 // Add a handful of extra data records, for trap tracking. | |
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2494 DataLayout* extra_data_base() const { return limit_data_position(); } |
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2495 DataLayout* extra_data_limit() const { return (DataLayout*)((address)this + size_in_bytes()); } |
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2496 int extra_data_size() const { return (address)extra_data_limit() |
0 | 2497 - (address)extra_data_base(); } |
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2498 static DataLayout* next_extra(DataLayout* dp); |
0 | 2499 |
2500 // Return (uint)-1 for overflow. | |
2501 uint trap_count(int reason) const { | |
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2502 assert((uint)reason < JVMCI_ONLY(2*) _trap_hist_limit, "oob"); |
0 | 2503 return (int)((_trap_hist._array[reason]+1) & _trap_hist_mask) - 1; |
2504 } | |
2505 // For loops: | |
2506 static uint trap_reason_limit() { return _trap_hist_limit; } | |
2507 static uint trap_count_limit() { return _trap_hist_mask; } | |
2508 uint inc_trap_count(int reason) { | |
2509 // Count another trap, anywhere in this method. | |
2510 assert(reason >= 0, "must be single trap"); | |
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2511 assert((uint)reason < JVMCI_ONLY(2*) _trap_hist_limit, "oob"); |
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2512 uint cnt1 = 1 + _trap_hist._array[reason]; |
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2513 if ((cnt1 & _trap_hist_mask) != 0) { // if no counter overflow... |
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2514 _trap_hist._array[reason] = cnt1; |
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2515 return cnt1; |
0 | 2516 } else { |
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2517 return _trap_hist_mask + (++_nof_overflow_traps); |
0 | 2518 } |
2519 } | |
2520 | |
2521 uint overflow_trap_count() const { | |
2522 return _nof_overflow_traps; | |
2523 } | |
2524 uint overflow_recompile_count() const { | |
2525 return _nof_overflow_recompiles; | |
2526 } | |
2527 void inc_overflow_recompile_count() { | |
2528 _nof_overflow_recompiles += 1; | |
2529 } | |
2530 uint decompile_count() const { | |
2531 return _nof_decompiles; | |
2532 } | |
2533 void inc_decompile_count() { | |
2534 _nof_decompiles += 1; | |
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2535 if (decompile_count() > (uint)PerMethodRecompilationCutoff) { |
7998 | 2536 method()->set_not_compilable(CompLevel_full_optimization, true, "decompile_count > PerMethodRecompilationCutoff"); |
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2537 } |
0 | 2538 } |
2539 | |
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2540 // Return pointer to area dedicated to parameters in MDO |
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2541 ParametersTypeData* parameters_type_data() const { |
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2542 return _parameters_type_data_di != -1 ? data_layout_at(_parameters_type_data_di)->data_in()->as_ParametersTypeData() : NULL; |
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2543 } |
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2544 |
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2545 int parameters_type_data_di() const { |
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2546 assert(_parameters_type_data_di != -1, "no args type data"); |
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2547 return _parameters_type_data_di; |
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2548 } |
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2549 |
0 | 2550 // Support for code generation |
2551 static ByteSize data_offset() { | |
6725
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2552 return byte_offset_of(MethodData, _data[0]); |
0 | 2553 } |
2554 | |
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2555 static ByteSize trap_history_offset() { |
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2556 return byte_offset_of(MethodData, _trap_hist._array); |
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2557 } |
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2558 |
1783 | 2559 static ByteSize invocation_counter_offset() { |
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2560 return byte_offset_of(MethodData, _invocation_counter); |
1783 | 2561 } |
2562 static ByteSize backedge_counter_offset() { | |
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2563 return byte_offset_of(MethodData, _backedge_counter); |
1783 | 2564 } |
2565 | |
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2566 static ByteSize parameters_type_data_di_offset() { |
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2567 return byte_offset_of(MethodData, _parameters_type_data_di); |
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2568 } |
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2569 |
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2570 // Deallocation support - no pointer fields to deallocate |
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2571 void deallocate_contents(ClassLoaderData* loader_data) {} |
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2572 |
0 | 2573 // GC support |
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2574 void set_size(int object_size_in_bytes) { _size = object_size_in_bytes; } |
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2575 |
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2576 // Printing |
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2577 #ifndef PRODUCT |
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2578 void print_on (outputStream* st) const; |
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2579 #endif |
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2580 void print_value_on(outputStream* st) const; |
0 | 2581 |
2582 #ifndef PRODUCT | |
2583 // printing support for method data | |
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2584 void print_data_on(outputStream* st) const; |
0 | 2585 #endif |
2586 | |
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2587 const char* internal_name() const { return "{method data}"; } |
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2588 |
0 | 2589 // verification |
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2590 void verify_on(outputStream* st); |
0 | 2591 void verify_data_on(outputStream* st); |
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2592 |
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2593 static bool profile_parameters_for_method(methodHandle m); |
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2594 static bool profile_arguments(); |
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2595 static bool profile_arguments_jsr292_only(); |
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2596 static bool profile_return(); |
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2597 static bool profile_parameters(); |
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2598 static bool profile_return_jsr292_only(); |
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2599 |
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2600 void clean_method_data(BoolObjectClosure* is_alive); |
18041 | 2601 |
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2602 void clean_weak_method_links(); |
0 | 2603 }; |
1972 | 2604 |
2605 #endif // SHARE_VM_OOPS_METHODDATAOOP_HPP |