Mercurial > hg > truffle
annotate src/share/vm/oops/methodData.hpp @ 18137:94faadc823ea
MethodData::initialize: remove unused argument
| author | Gilles Duboscq <duboscq@ssw.jku.at> |
|---|---|
| date | Tue, 21 Oct 2014 10:28:43 +0200 |
| parents | 52b4284cb496 |
| children | 99e5d0a7600e |
| rev | line source |
|---|---|
| 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 { | |
| 540 protected: | |
| 541 enum { | |
| 542 // null_seen: | |
| 543 // saw a null operand (cast/aastore/instanceof) | |
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544 null_seen_flag = DataLayout::first_flag + 0 |
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545 #ifdef GRAAL |
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546 // bytecode threw any exception |
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547 , exception_seen_flag = null_seen_flag + 1 |
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548 #endif |
| 0 | 549 }; |
| 550 enum { bit_cell_count = 0 }; // no additional data fields needed. | |
| 551 public: | |
| 552 BitData(DataLayout* layout) : ProfileData(layout) { | |
| 553 } | |
| 554 | |
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555 virtual bool is_BitData() const { return true; } |
| 0 | 556 |
| 557 static int static_cell_count() { | |
| 558 return bit_cell_count; | |
| 559 } | |
| 560 | |
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561 virtual int cell_count() const { |
| 0 | 562 return static_cell_count(); |
| 563 } | |
| 564 | |
| 565 // Accessor | |
| 566 | |
| 567 // The null_seen flag bit is specially known to the interpreter. | |
| 568 // Consulting it allows the compiler to avoid setting up null_check traps. | |
| 569 bool null_seen() { return flag_at(null_seen_flag); } | |
| 570 void set_null_seen() { set_flag_at(null_seen_flag); } | |
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571 #ifdef GRAAL |
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572 // true if an exception was thrown at the specific BCI |
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573 bool exception_seen() { return flag_at(exception_seen_flag); } |
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574 void set_exception_seen() { set_flag_at(exception_seen_flag); } |
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575 #endif |
| 0 | 576 |
| 577 // Code generation support | |
| 578 static int null_seen_byte_constant() { | |
| 579 return flag_number_to_byte_constant(null_seen_flag); | |
| 580 } | |
| 581 | |
| 582 static ByteSize bit_data_size() { | |
| 583 return cell_offset(bit_cell_count); | |
| 584 } | |
| 585 | |
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586 #ifdef CC_INTERP |
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587 static int bit_data_size_in_bytes() { |
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588 return cell_offset_in_bytes(bit_cell_count); |
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589 } |
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590 |
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591 static void set_null_seen(DataLayout* layout) { |
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592 set_flag_at(layout, null_seen_flag); |
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593 } |
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594 |
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595 static DataLayout* advance(DataLayout* layout) { |
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596 return (DataLayout*) (((address)layout) + (ssize_t)BitData::bit_data_size_in_bytes()); |
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597 } |
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598 #endif // CC_INTERP |
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599 |
| 0 | 600 #ifndef PRODUCT |
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601 void print_data_on(outputStream* st, const char* extra = NULL) const; |
| 0 | 602 #endif |
| 603 }; | |
| 604 | |
| 605 // CounterData | |
| 606 // | |
| 607 // A CounterData corresponds to a simple counter. | |
| 608 class CounterData : public BitData { | |
| 609 protected: | |
| 610 enum { | |
| 611 count_off, | |
| 612 counter_cell_count | |
| 613 }; | |
| 614 public: | |
| 615 CounterData(DataLayout* layout) : BitData(layout) {} | |
| 616 | |
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617 virtual bool is_CounterData() const { return true; } |
| 0 | 618 |
| 619 static int static_cell_count() { | |
| 620 return counter_cell_count; | |
| 621 } | |
| 622 | |
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623 virtual int cell_count() const { |
| 0 | 624 return static_cell_count(); |
| 625 } | |
| 626 | |
| 627 // Direct accessor | |
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628 uint count() const { |
| 0 | 629 return uint_at(count_off); |
| 630 } | |
| 631 | |
| 632 // Code generation support | |
| 633 static ByteSize count_offset() { | |
| 634 return cell_offset(count_off); | |
| 635 } | |
| 636 static ByteSize counter_data_size() { | |
| 637 return cell_offset(counter_cell_count); | |
| 638 } | |
| 639 | |
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640 void set_count(uint count) { |
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641 set_uint_at(count_off, count); |
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642 } |
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643 |
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644 #ifdef CC_INTERP |
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645 static int counter_data_size_in_bytes() { |
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646 return cell_offset_in_bytes(counter_cell_count); |
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647 } |
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648 |
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649 static void increment_count_no_overflow(DataLayout* layout) { |
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650 increment_uint_at_no_overflow(layout, count_off); |
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651 } |
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652 |
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653 // Support counter decrementation at checkcast / subtype check failed. |
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654 static void decrement_count(DataLayout* layout) { |
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655 increment_uint_at_no_overflow(layout, count_off, -1); |
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656 } |
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657 |
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658 static DataLayout* advance(DataLayout* layout) { |
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659 return (DataLayout*) (((address)layout) + (ssize_t)CounterData::counter_data_size_in_bytes()); |
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660 } |
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661 #endif // CC_INTERP |
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662 |
| 0 | 663 #ifndef PRODUCT |
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664 void print_data_on(outputStream* st, const char* extra = NULL) const; |
| 0 | 665 #endif |
| 666 }; | |
| 667 | |
| 668 // JumpData | |
| 669 // | |
| 670 // A JumpData is used to access profiling information for a direct | |
| 671 // branch. It is a counter, used for counting the number of branches, | |
| 672 // plus a data displacement, used for realigning the data pointer to | |
| 673 // the corresponding target bci. | |
| 674 class JumpData : public ProfileData { | |
| 675 protected: | |
| 676 enum { | |
| 677 taken_off_set, | |
| 678 displacement_off_set, | |
| 679 jump_cell_count | |
| 680 }; | |
| 681 | |
| 682 void set_displacement(int displacement) { | |
| 683 set_int_at(displacement_off_set, displacement); | |
| 684 } | |
| 685 | |
| 686 public: | |
| 687 JumpData(DataLayout* layout) : ProfileData(layout) { | |
| 688 assert(layout->tag() == DataLayout::jump_data_tag || | |
| 689 layout->tag() == DataLayout::branch_data_tag, "wrong type"); | |
| 690 } | |
| 691 | |
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692 virtual bool is_JumpData() const { return true; } |
| 0 | 693 |
| 694 static int static_cell_count() { | |
| 695 return jump_cell_count; | |
| 696 } | |
| 697 | |
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698 virtual int cell_count() const { |
| 0 | 699 return static_cell_count(); |
| 700 } | |
| 701 | |
| 702 // Direct accessor | |
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703 uint taken() const { |
| 0 | 704 return uint_at(taken_off_set); |
| 705 } | |
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706 |
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707 void set_taken(uint cnt) { |
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708 set_uint_at(taken_off_set, cnt); |
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709 } |
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710 |
| 0 | 711 // Saturating counter |
| 712 uint inc_taken() { | |
| 713 uint cnt = taken() + 1; | |
| 714 // Did we wrap? Will compiler screw us?? | |
| 715 if (cnt == 0) cnt--; | |
| 716 set_uint_at(taken_off_set, cnt); | |
| 717 return cnt; | |
| 718 } | |
| 719 | |
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720 int displacement() const { |
| 0 | 721 return int_at(displacement_off_set); |
| 722 } | |
| 723 | |
| 724 // Code generation support | |
| 725 static ByteSize taken_offset() { | |
| 726 return cell_offset(taken_off_set); | |
| 727 } | |
| 728 | |
| 729 static ByteSize displacement_offset() { | |
| 730 return cell_offset(displacement_off_set); | |
| 731 } | |
| 732 | |
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733 #ifdef CC_INTERP |
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734 static void increment_taken_count_no_overflow(DataLayout* layout) { |
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735 increment_uint_at_no_overflow(layout, taken_off_set); |
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736 } |
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737 |
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738 static DataLayout* advance_taken(DataLayout* layout) { |
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739 return (DataLayout*) (((address)layout) + (ssize_t)int_at(layout, displacement_off_set)); |
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740 } |
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741 |
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742 static uint taken_count(DataLayout* layout) { |
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743 return (uint) uint_at(layout, taken_off_set); |
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744 } |
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745 #endif // CC_INTERP |
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746 |
| 0 | 747 // Specific initialization. |
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748 void post_initialize(BytecodeStream* stream, MethodData* mdo); |
| 0 | 749 |
| 750 #ifndef PRODUCT | |
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751 void print_data_on(outputStream* st, const char* extra = NULL) const; |
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752 #endif |
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753 }; |
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754 |
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755 // Entries in a ProfileData object to record types: it can either be |
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756 // none (no profile), unknown (conflicting profile data) or a klass if |
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757 // a single one is seen. Whether a null reference was seen is also |
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758 // recorded. No counter is associated with the type and a single type |
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759 // is tracked (unlike VirtualCallData). |
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760 class TypeEntries { |
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761 |
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762 public: |
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763 |
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764 // A single cell is used to record information for a type: |
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765 // - the cell is initialized to 0 |
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766 // - when a type is discovered it is stored in the cell |
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767 // - bit zero of the cell is used to record whether a null reference |
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768 // was encountered or not |
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769 // - bit 1 is set to record a conflict in the type information |
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770 |
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771 enum { |
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772 null_seen = 1, |
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773 type_mask = ~null_seen, |
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774 type_unknown = 2, |
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775 status_bits = null_seen | type_unknown, |
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776 type_klass_mask = ~status_bits |
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777 }; |
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778 |
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779 // what to initialize a cell to |
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780 static intptr_t type_none() { |
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781 return 0; |
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782 } |
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783 |
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784 // null seen = bit 0 set? |
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785 static bool was_null_seen(intptr_t v) { |
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786 return (v & null_seen) != 0; |
|
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787 } |
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|
788 |
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789 // conflicting type information = bit 1 set? |
|
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790 static bool is_type_unknown(intptr_t v) { |
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791 return (v & type_unknown) != 0; |
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|
792 } |
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|
793 |
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794 // not type information yet = all bits cleared, ignoring bit 0? |
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795 static bool is_type_none(intptr_t v) { |
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796 return (v & type_mask) == 0; |
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|
797 } |
|
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|
798 |
|
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|
799 // recorded type: cell without bit 0 and 1 |
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800 static intptr_t klass_part(intptr_t v) { |
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801 intptr_t r = v & type_klass_mask; |
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802 return r; |
|
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|
803 } |
|
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|
804 |
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|
805 // type recorded |
|
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806 static Klass* valid_klass(intptr_t k) { |
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807 if (!is_type_none(k) && |
|
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|
808 !is_type_unknown(k)) { |
| 13080 | 809 Klass* res = (Klass*)klass_part(k); |
| 810 assert(res != NULL, "invalid"); | |
| 811 return res; | |
|
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812 } else { |
|
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|
813 return NULL; |
|
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|
814 } |
|
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|
815 } |
|
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|
816 |
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817 static intptr_t with_status(intptr_t k, intptr_t in) { |
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818 return k | (in & status_bits); |
|
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|
819 } |
|
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|
820 |
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821 static intptr_t with_status(Klass* k, intptr_t in) { |
|
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822 return with_status((intptr_t)k, in); |
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|
823 } |
|
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|
824 |
|
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|
825 #ifndef PRODUCT |
|
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826 static void print_klass(outputStream* st, intptr_t k); |
|
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|
827 #endif |
|
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|
828 |
|
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|
829 // GC support |
|
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830 static bool is_loader_alive(BoolObjectClosure* is_alive_cl, intptr_t p); |
|
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|
831 |
|
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|
832 protected: |
|
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|
833 // ProfileData object these entries are part of |
|
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|
834 ProfileData* _pd; |
|
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835 // offset within the ProfileData object where the entries start |
|
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|
836 const int _base_off; |
|
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|
837 |
|
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|
838 TypeEntries(int base_off) |
|
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|
839 : _base_off(base_off), _pd(NULL) {} |
|
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|
840 |
|
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|
841 void set_intptr_at(int index, intptr_t value) { |
|
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842 _pd->set_intptr_at(index, value); |
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|
843 } |
|
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|
844 |
|
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|
845 intptr_t intptr_at(int index) const { |
|
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846 return _pd->intptr_at(index); |
|
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|
847 } |
|
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|
848 |
|
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|
849 public: |
|
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|
850 void set_profile_data(ProfileData* pd) { |
|
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|
851 _pd = pd; |
|
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|
852 } |
|
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|
853 }; |
|
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|
854 |
|
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|
855 // Type entries used for arguments passed at a call and parameters on |
|
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|
856 // method entry. 2 cells per entry: one for the type encoded as in |
|
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|
857 // TypeEntries and one initialized with the stack slot where the |
|
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858 // profiled object is to be found so that the interpreter can locate |
|
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859 // it quickly. |
|
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|
860 class TypeStackSlotEntries : public TypeEntries { |
|
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|
861 |
|
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|
862 private: |
|
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|
863 enum { |
|
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|
864 stack_slot_entry, |
|
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|
865 type_entry, |
|
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|
866 per_arg_cell_count |
|
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|
867 }; |
|
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|
868 |
|
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|
869 // offset of cell for stack slot for entry i within ProfileData object |
|
12882
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870 int stack_slot_offset(int i) const { |
|
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|
871 return _base_off + stack_slot_local_offset(i); |
|
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|
872 } |
|
d13d7aba8c12
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|
873 |
|
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|
874 protected: |
|
12882
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875 const int _number_of_entries; |
|
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|
876 |
|
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|
877 // offset of cell for type for entry i within ProfileData object |
|
12882
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|
878 int type_offset(int i) const { |
|
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|
879 return _base_off + type_local_offset(i); |
|
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|
880 } |
|
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|
881 |
|
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|
882 public: |
|
d13d7aba8c12
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|
883 |
|
12882
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|
884 TypeStackSlotEntries(int base_off, int nb_entries) |
|
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885 : TypeEntries(base_off), _number_of_entries(nb_entries) {} |
|
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|
886 |
|
12962
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|
887 static int compute_cell_count(Symbol* signature, bool include_receiver, int max); |
|
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|
888 |
|
12962
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|
889 void post_initialize(Symbol* signature, bool has_receiver, bool include_receiver); |
|
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|
890 |
|
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|
891 // offset of cell for stack slot for entry i within this block of cells for a TypeStackSlotEntries |
|
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|
892 static int stack_slot_local_offset(int i) { |
|
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|
893 return i * per_arg_cell_count + stack_slot_entry; |
|
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|
894 } |
|
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|
895 |
|
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|
896 // offset of cell for type for entry i within this block of cells for a TypeStackSlotEntries |
|
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|
897 static int type_local_offset(int i) { |
|
12882
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|
898 return i * per_arg_cell_count + type_entry; |
|
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|
899 } |
|
d13d7aba8c12
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|
900 |
|
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|
901 // stack slot for entry i |
|
d13d7aba8c12
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|
902 uint stack_slot(int i) const { |
|
12882
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|
903 assert(i >= 0 && i < _number_of_entries, "oob"); |
|
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|
904 return _pd->uint_at(stack_slot_offset(i)); |
|
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|
905 } |
|
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changeset
|
906 |
|
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|
907 // set stack slot for entry i |
|
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|
908 void set_stack_slot(int i, uint num) { |
|
12882
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|
909 assert(i >= 0 && i < _number_of_entries, "oob"); |
|
ce0cc25bc5e2
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|
910 _pd->set_uint_at(stack_slot_offset(i), num); |
|
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|
911 } |
|
d13d7aba8c12
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|
912 |
|
d13d7aba8c12
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|
913 // type for entry i |
|
d13d7aba8c12
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|
914 intptr_t type(int i) const { |
|
12882
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|
915 assert(i >= 0 && i < _number_of_entries, "oob"); |
|
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|
916 return _pd->intptr_at(type_offset(i)); |
|
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|
917 } |
|
d13d7aba8c12
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|
918 |
|
d13d7aba8c12
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|
919 // set type for entry i |
|
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|
920 void set_type(int i, intptr_t k) { |
|
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921 assert(i >= 0 && i < _number_of_entries, "oob"); |
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922 _pd->set_intptr_at(type_offset(i), k); |
|
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923 } |
|
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924 |
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925 static ByteSize per_arg_size() { |
|
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926 return in_ByteSize(per_arg_cell_count * DataLayout::cell_size); |
|
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927 } |
|
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|
928 |
|
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929 static int per_arg_count() { |
|
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930 return per_arg_cell_count ; |
|
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|
931 } |
|
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|
932 |
|
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933 // GC support |
|
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934 void clean_weak_klass_links(BoolObjectClosure* is_alive_closure); |
|
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935 |
|
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936 #ifndef PRODUCT |
|
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937 void print_data_on(outputStream* st) const; |
|
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938 #endif |
|
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939 }; |
|
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940 |
|
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941 // Type entry used for return from a call. A single cell to record the |
|
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942 // type. |
|
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943 class ReturnTypeEntry : public TypeEntries { |
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944 |
|
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945 private: |
|
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946 enum { |
|
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947 cell_count = 1 |
|
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948 }; |
|
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|
949 |
|
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950 public: |
|
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951 ReturnTypeEntry(int base_off) |
|
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952 : TypeEntries(base_off) {} |
|
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953 |
|
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954 void post_initialize() { |
|
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955 set_type(type_none()); |
|
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956 } |
|
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957 |
|
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958 intptr_t type() const { |
|
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959 return _pd->intptr_at(_base_off); |
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960 } |
|
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|
961 |
|
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962 void set_type(intptr_t k) { |
|
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963 _pd->set_intptr_at(_base_off, k); |
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964 } |
|
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965 |
|
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966 static int static_cell_count() { |
|
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967 return cell_count; |
|
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968 } |
|
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|
969 |
|
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970 static ByteSize size() { |
|
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971 return in_ByteSize(cell_count * DataLayout::cell_size); |
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972 } |
|
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973 |
|
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974 ByteSize type_offset() { |
|
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975 return DataLayout::cell_offset(_base_off); |
|
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976 } |
|
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|
977 |
|
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978 // GC support |
|
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979 void clean_weak_klass_links(BoolObjectClosure* is_alive_closure); |
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|
980 |
|
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981 #ifndef PRODUCT |
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982 void print_data_on(outputStream* st) const; |
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983 #endif |
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|
984 }; |
|
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|
985 |
|
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986 // Entries to collect type information at a call: contains arguments |
|
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987 // (TypeStackSlotEntries), a return type (ReturnTypeEntry) and a |
|
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988 // number of cells. Because the number of cells for the return type is |
|
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989 // smaller than the number of cells for the type of an arguments, the |
|
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990 // number of cells is used to tell how many arguments are profiled and |
|
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991 // whether a return value is profiled. See has_arguments() and |
|
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992 // has_return(). |
|
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993 class TypeEntriesAtCall { |
|
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994 private: |
|
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995 static int stack_slot_local_offset(int i) { |
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996 return header_cell_count() + TypeStackSlotEntries::stack_slot_local_offset(i); |
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997 } |
|
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|
998 |
|
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999 static int argument_type_local_offset(int i) { |
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1000 return header_cell_count() + TypeStackSlotEntries::type_local_offset(i);; |
|
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1001 } |
|
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|
1002 |
|
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1003 public: |
|
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1004 |
|
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1005 static int header_cell_count() { |
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1006 return 1; |
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1007 } |
|
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1008 |
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1009 static int cell_count_local_offset() { |
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1010 return 0; |
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1011 } |
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1012 |
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1013 static int compute_cell_count(BytecodeStream* stream); |
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1014 |
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1015 static void initialize(DataLayout* dl, int base, int cell_count) { |
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1016 int off = base + cell_count_local_offset(); |
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1017 dl->set_cell_at(off, cell_count - base - header_cell_count()); |
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1018 } |
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1019 |
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1020 static bool arguments_profiling_enabled(); |
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1021 static bool return_profiling_enabled(); |
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1022 |
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1023 // Code generation support |
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1024 static ByteSize cell_count_offset() { |
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1025 return in_ByteSize(cell_count_local_offset() * DataLayout::cell_size); |
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1026 } |
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1027 |
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1028 static ByteSize args_data_offset() { |
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1029 return in_ByteSize(header_cell_count() * DataLayout::cell_size); |
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1030 } |
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1031 |
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1032 static ByteSize stack_slot_offset(int i) { |
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1033 return in_ByteSize(stack_slot_local_offset(i) * DataLayout::cell_size); |
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1034 } |
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1035 |
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1036 static ByteSize argument_type_offset(int i) { |
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1037 return in_ByteSize(argument_type_local_offset(i) * DataLayout::cell_size); |
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1038 } |
|
17900
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1039 |
|
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1040 static ByteSize return_only_size() { |
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1041 return ReturnTypeEntry::size() + in_ByteSize(header_cell_count() * DataLayout::cell_size); |
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1042 } |
|
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1043 |
|
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1044 }; |
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1045 |
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1046 // CallTypeData |
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1047 // |
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1048 // A CallTypeData is used to access profiling information about a non |
|
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1049 // virtual call for which we collect type information about arguments |
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1050 // and return value. |
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1051 class CallTypeData : public CounterData { |
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1052 private: |
|
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1053 // entries for arguments if any |
|
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1054 TypeStackSlotEntries _args; |
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1055 // entry for return type if any |
|
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1056 ReturnTypeEntry _ret; |
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1057 |
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1058 int cell_count_global_offset() const { |
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1059 return CounterData::static_cell_count() + TypeEntriesAtCall::cell_count_local_offset(); |
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1060 } |
|
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1061 |
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1062 // number of cells not counting the header |
|
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1063 int cell_count_no_header() const { |
|
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1064 return uint_at(cell_count_global_offset()); |
|
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1065 } |
|
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1066 |
|
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1067 void check_number_of_arguments(int total) { |
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1068 assert(number_of_arguments() == total, "should be set in DataLayout::initialize"); |
|
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1069 } |
|
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1070 |
|
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1071 public: |
|
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1072 CallTypeData(DataLayout* layout) : |
|
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1073 CounterData(layout), |
|
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1074 _args(CounterData::static_cell_count()+TypeEntriesAtCall::header_cell_count(), number_of_arguments()), |
|
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1075 _ret(cell_count() - ReturnTypeEntry::static_cell_count()) |
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1076 { |
|
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1077 assert(layout->tag() == DataLayout::call_type_data_tag, "wrong type"); |
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1078 // Some compilers (VC++) don't want this passed in member initialization list |
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1079 _args.set_profile_data(this); |
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1080 _ret.set_profile_data(this); |
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1081 } |
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1082 |
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1083 const TypeStackSlotEntries* args() const { |
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1084 assert(has_arguments(), "no profiling of arguments"); |
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1085 return &_args; |
|
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1086 } |
|
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1087 |
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1088 const ReturnTypeEntry* ret() const { |
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1089 assert(has_return(), "no profiling of return value"); |
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1090 return &_ret; |
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1091 } |
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1092 |
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1093 virtual bool is_CallTypeData() const { return true; } |
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1094 |
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1095 static int static_cell_count() { |
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1096 return -1; |
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1097 } |
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1098 |
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1099 static int compute_cell_count(BytecodeStream* stream) { |
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1100 return CounterData::static_cell_count() + TypeEntriesAtCall::compute_cell_count(stream); |
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1101 } |
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1102 |
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1103 static void initialize(DataLayout* dl, int cell_count) { |
|
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1104 TypeEntriesAtCall::initialize(dl, CounterData::static_cell_count(), cell_count); |
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1105 } |
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1106 |
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1107 virtual void post_initialize(BytecodeStream* stream, MethodData* mdo); |
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1108 |
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1109 virtual int cell_count() const { |
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1110 return CounterData::static_cell_count() + |
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1111 TypeEntriesAtCall::header_cell_count() + |
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1112 int_at_unchecked(cell_count_global_offset()); |
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1113 } |
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1114 |
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1115 int number_of_arguments() const { |
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1116 return cell_count_no_header() / TypeStackSlotEntries::per_arg_count(); |
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1117 } |
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1118 |
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1119 void set_argument_type(int i, Klass* k) { |
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1120 assert(has_arguments(), "no arguments!"); |
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1121 intptr_t current = _args.type(i); |
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1122 _args.set_type(i, TypeEntries::with_status(k, current)); |
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1123 } |
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1124 |
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1125 void set_return_type(Klass* k) { |
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1126 assert(has_return(), "no return!"); |
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1127 intptr_t current = _ret.type(); |
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1128 _ret.set_type(TypeEntries::with_status(k, current)); |
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1129 } |
|
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1130 |
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1131 // An entry for a return value takes less space than an entry for an |
|
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1132 // argument so if the number of cells exceeds the number of cells |
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1133 // needed for an argument, this object contains type information for |
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1134 // at least one argument. |
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1135 bool has_arguments() const { |
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1136 bool res = cell_count_no_header() >= TypeStackSlotEntries::per_arg_count(); |
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1137 assert (!res || TypeEntriesAtCall::arguments_profiling_enabled(), "no profiling of arguments"); |
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1138 return res; |
|
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1139 } |
|
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1140 |
|
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1141 // An entry for a return value takes less space than an entry for an |
|
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1142 // argument, so if the remainder of the number of cells divided by |
|
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1143 // the number of cells for an argument is not null, a return value |
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1144 // is profiled in this object. |
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1145 bool has_return() const { |
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1146 bool res = (cell_count_no_header() % TypeStackSlotEntries::per_arg_count()) != 0; |
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1147 assert (!res || TypeEntriesAtCall::return_profiling_enabled(), "no profiling of return values"); |
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1148 return res; |
|
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1149 } |
|
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1150 |
|
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1151 // Code generation support |
|
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1152 static ByteSize args_data_offset() { |
|
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1153 return cell_offset(CounterData::static_cell_count()) + TypeEntriesAtCall::args_data_offset(); |
|
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1154 } |
|
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1155 |
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1156 // GC support |
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1157 virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure) { |
|
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1158 if (has_arguments()) { |
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1159 _args.clean_weak_klass_links(is_alive_closure); |
|
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1160 } |
|
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1161 if (has_return()) { |
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1162 _ret.clean_weak_klass_links(is_alive_closure); |
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1163 } |
|
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1164 } |
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1165 |
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1166 #ifndef PRODUCT |
|
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1167 virtual void print_data_on(outputStream* st, const char* extra = NULL) const; |
| 0 | 1168 #endif |
| 1169 }; | |
| 1170 | |
| 1171 // ReceiverTypeData | |
| 1172 // | |
| 1173 // A ReceiverTypeData is used to access profiling information about a | |
| 1174 // dynamic type check. It consists of a counter which counts the total times | |
|
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1175 // that the check is reached, and a series of (Klass*, count) pairs |
| 0 | 1176 // which are used to store a type profile for the receiver of the check. |
| 1177 class ReceiverTypeData : public CounterData { | |
| 1178 protected: | |
| 1179 enum { | |
|
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1180 #ifdef GRAAL |
|
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1181 // Description of the different counters |
|
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1182 // ReceiverTypeData for instanceof/checkcast/aastore: |
|
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1183 // C1/C2: count is incremented on type overflow and decremented for failed type checks |
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1184 // Graal: count decremented for failed type checks and nonprofiled_count is incremented on type overflow |
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1185 // TODO (chaeubl): in fact, Graal should also increment the count for failed type checks to mimic the C1/C2 behavior |
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1186 // VirtualCallData for invokevirtual/invokeinterface: |
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1187 // C1/C2: count is incremented on type overflow |
|
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1188 // Graal: count is incremented on type overflow, nonprofiled_count is incremented on method overflow |
|
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1189 |
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1190 // Graal is interested in knowing the percentage of type checks involving a type not explicitly in the profile |
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1191 nonprofiled_count_off_set = counter_cell_count, |
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1192 receiver0_offset, |
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1193 #else |
| 0 | 1194 receiver0_offset = counter_cell_count, |
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1195 #endif |
| 0 | 1196 count0_offset, |
| 1197 receiver_type_row_cell_count = (count0_offset + 1) - receiver0_offset | |
| 1198 }; | |
| 1199 | |
| 1200 public: | |
| 1201 ReceiverTypeData(DataLayout* layout) : CounterData(layout) { | |
| 1202 assert(layout->tag() == DataLayout::receiver_type_data_tag || | |
|
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1203 layout->tag() == DataLayout::virtual_call_data_tag || |
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1204 layout->tag() == DataLayout::virtual_call_type_data_tag, "wrong type"); |
| 0 | 1205 } |
| 1206 | |
|
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1207 virtual bool is_ReceiverTypeData() const { return true; } |
| 0 | 1208 |
| 1209 static int static_cell_count() { | |
|
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1210 return counter_cell_count + (uint) TypeProfileWidth * receiver_type_row_cell_count GRAAL_ONLY(+ 1); |
| 0 | 1211 } |
| 1212 | |
|
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1213 virtual int cell_count() const { |
| 0 | 1214 return static_cell_count(); |
| 1215 } | |
| 1216 | |
| 1217 // Direct accessors | |
| 1218 static uint row_limit() { | |
| 1219 return TypeProfileWidth; | |
| 1220 } | |
| 1221 static int receiver_cell_index(uint row) { | |
| 1222 return receiver0_offset + row * receiver_type_row_cell_count; | |
| 1223 } | |
| 1224 static int receiver_count_cell_index(uint row) { | |
| 1225 return count0_offset + row * receiver_type_row_cell_count; | |
| 1226 } | |
| 1227 | |
|
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1228 Klass* receiver(uint row) const { |
| 0 | 1229 assert(row < row_limit(), "oob"); |
| 1230 | |
|
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1231 Klass* recv = (Klass*)intptr_at(receiver_cell_index(row)); |
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1232 assert(recv == NULL || recv->is_klass(), "wrong type"); |
| 0 | 1233 return recv; |
| 1234 } | |
| 1235 | |
|
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1236 void set_receiver(uint row, Klass* k) { |
| 941 | 1237 assert((uint)row < row_limit(), "oob"); |
|
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1238 set_intptr_at(receiver_cell_index(row), (uintptr_t)k); |
| 941 | 1239 } |
| 1240 | |
|
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1241 uint receiver_count(uint row) const { |
| 0 | 1242 assert(row < row_limit(), "oob"); |
| 1243 return uint_at(receiver_count_cell_index(row)); | |
| 1244 } | |
| 1245 | |
| 941 | 1246 void set_receiver_count(uint row, uint count) { |
| 1247 assert(row < row_limit(), "oob"); | |
| 1248 set_uint_at(receiver_count_cell_index(row), count); | |
| 1249 } | |
| 1250 | |
| 1251 void clear_row(uint row) { | |
| 1252 assert(row < row_limit(), "oob"); | |
|
1251
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1253 // Clear total count - indicator of polymorphic call site. |
|
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1254 // The site may look like as monomorphic after that but |
|
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1255 // it allow to have more accurate profiling information because |
|
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1256 // there was execution phase change since klasses were unloaded. |
|
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1257 // If the site is still polymorphic then MDO will be updated |
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1258 // to reflect it. But it could be the case that the site becomes |
|
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1259 // only bimorphic. Then keeping total count not 0 will be wrong. |
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1260 // Even if we use monomorphic (when it is not) for compilation |
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1261 // we will only have trap, deoptimization and recompile again |
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1262 // with updated MDO after executing method in Interpreter. |
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1263 // An additional receiver will be recorded in the cleaned row |
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1264 // during next call execution. |
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1265 // |
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1266 // Note: our profiling logic works with empty rows in any slot. |
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1267 // We do sorting a profiling info (ciCallProfile) for compilation. |
|
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1268 // |
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|
1269 set_count(0); |
| 941 | 1270 set_receiver(row, NULL); |
| 1271 set_receiver_count(row, 0); | |
|
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1272 #ifdef GRAAL |
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1273 if (!this->is_VirtualCallData()) { |
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1274 // if this is a ReceiverTypeData for Graal, the nonprofiled_count |
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1275 // must also be reset (see "Description of the different counters" above) |
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1276 set_nonprofiled_count(0); |
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1277 } |
|
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1278 #endif |
| 941 | 1279 } |
| 1280 | |
| 0 | 1281 // Code generation support |
| 1282 static ByteSize receiver_offset(uint row) { | |
| 1283 return cell_offset(receiver_cell_index(row)); | |
| 1284 } | |
| 1285 static ByteSize receiver_count_offset(uint row) { | |
| 1286 return cell_offset(receiver_count_cell_index(row)); | |
| 1287 } | |
|
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1288 #ifdef GRAAL |
|
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|
1289 static ByteSize nonprofiled_receiver_count_offset() { |
|
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1290 return cell_offset(nonprofiled_count_off_set); |
|
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1291 } |
|
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1292 uint nonprofiled_count() const { |
|
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1293 return uint_at(nonprofiled_count_off_set); |
|
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1294 } |
|
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1295 void set_nonprofiled_count(uint count) { |
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1296 set_uint_at(nonprofiled_count_off_set, count); |
|
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1297 } |
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1298 #endif |
| 0 | 1299 static ByteSize receiver_type_data_size() { |
| 1300 return cell_offset(static_cell_count()); | |
| 1301 } | |
| 1302 | |
| 1303 // GC support | |
|
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1304 virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure); |
| 0 | 1305 |
|
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1306 #ifdef CC_INTERP |
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1307 static int receiver_type_data_size_in_bytes() { |
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1308 return cell_offset_in_bytes(static_cell_count()); |
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1309 } |
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1310 |
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1311 static Klass *receiver_unchecked(DataLayout* layout, uint row) { |
|
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1312 Klass* recv = (Klass*)layout->cell_at(receiver_cell_index(row)); |
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1313 return recv; |
|
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1314 } |
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1315 |
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1316 static void increment_receiver_count_no_overflow(DataLayout* layout, Klass *rcvr) { |
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1317 const int num_rows = row_limit(); |
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1318 // Receiver already exists? |
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1319 for (int row = 0; row < num_rows; row++) { |
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1320 if (receiver_unchecked(layout, row) == rcvr) { |
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1321 increment_uint_at_no_overflow(layout, receiver_count_cell_index(row)); |
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1322 return; |
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1323 } |
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1324 } |
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1325 // New receiver, find a free slot. |
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1326 for (int row = 0; row < num_rows; row++) { |
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1327 if (receiver_unchecked(layout, row) == NULL) { |
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1328 set_intptr_at(layout, receiver_cell_index(row), (intptr_t)rcvr); |
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1329 increment_uint_at_no_overflow(layout, receiver_count_cell_index(row)); |
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1330 return; |
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1331 } |
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1332 } |
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1333 // Receiver did not match any saved receiver and there is no empty row for it. |
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1334 // Increment total counter to indicate polymorphic case. |
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1335 increment_count_no_overflow(layout); |
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1336 } |
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1337 |
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1338 static DataLayout* advance(DataLayout* layout) { |
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1339 return (DataLayout*) (((address)layout) + (ssize_t)ReceiverTypeData::receiver_type_data_size_in_bytes()); |
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1340 } |
|
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1341 #endif // CC_INTERP |
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1342 |
| 0 | 1343 #ifndef PRODUCT |
|
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|
1344 void print_receiver_data_on(outputStream* st) const; |
|
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|
1345 void print_data_on(outputStream* st, const char* extra = NULL) const; |
| 0 | 1346 #endif |
| 1347 }; | |
| 1348 | |
| 1349 // VirtualCallData | |
| 1350 // | |
| 1351 // A VirtualCallData is used to access profiling information about a | |
| 1352 // virtual call. For now, it has nothing more than a ReceiverTypeData. | |
| 1353 class VirtualCallData : public ReceiverTypeData { | |
| 1354 public: | |
| 1355 VirtualCallData(DataLayout* layout) : ReceiverTypeData(layout) { | |
|
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|
1356 assert(layout->tag() == DataLayout::virtual_call_data_tag || |
|
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8023657: New type profiling points: arguments to call
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|
1357 layout->tag() == DataLayout::virtual_call_type_data_tag, "wrong type"); |
| 0 | 1358 } |
| 1359 | |
|
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|
1360 virtual bool is_VirtualCallData() const { return true; } |
| 0 | 1361 |
| 1362 static int static_cell_count() { | |
| 1363 // At this point we could add more profile state, e.g., for arguments. | |
| 1364 // But for now it's the same size as the base record type. | |
|
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Added infrastructure for recording invoked methods in the profiling information.
Christian Haeubl <haeubl@ssw.jku.at>
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|
1365 return ReceiverTypeData::static_cell_count() GRAAL_ONLY(+ (uint) MethodProfileWidth * receiver_type_row_cell_count); |
| 0 | 1366 } |
| 1367 | |
|
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|
1368 virtual int cell_count() const { |
| 0 | 1369 return static_cell_count(); |
| 1370 } | |
| 1371 | |
| 1372 // Direct accessors | |
| 1373 static ByteSize virtual_call_data_size() { | |
| 1374 return cell_offset(static_cell_count()); | |
| 1375 } | |
| 1376 | |
|
14420
abe03600372a
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|
1377 #ifdef CC_INTERP |
|
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|
1378 static int virtual_call_data_size_in_bytes() { |
|
abe03600372a
8024468: PPC64 (part 201): cppInterpreter: implement bytecode profiling
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|
1379 return cell_offset_in_bytes(static_cell_count()); |
|
abe03600372a
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|
1380 } |
|
abe03600372a
8024468: PPC64 (part 201): cppInterpreter: implement bytecode profiling
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|
1381 |
|
abe03600372a
8024468: PPC64 (part 201): cppInterpreter: implement bytecode profiling
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|
1382 static DataLayout* advance(DataLayout* layout) { |
|
abe03600372a
8024468: PPC64 (part 201): cppInterpreter: implement bytecode profiling
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|
1383 return (DataLayout*) (((address)layout) + (ssize_t)VirtualCallData::virtual_call_data_size_in_bytes()); |
|
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|
1384 } |
|
abe03600372a
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|
1385 #endif // CC_INTERP |
|
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8024468: PPC64 (part 201): cppInterpreter: implement bytecode profiling
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|
1386 |
|
9760
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Added infrastructure for recording invoked methods in the profiling information.
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|
1387 #ifdef GRAAL |
|
c76b43ed5089
Added infrastructure for recording invoked methods in the profiling information.
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diff
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|
1388 static ByteSize method_offset(uint row) { |
|
c76b43ed5089
Added infrastructure for recording invoked methods in the profiling information.
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|
1389 return cell_offset(method_cell_index(row)); |
|
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Added infrastructure for recording invoked methods in the profiling information.
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|
1390 } |
|
c76b43ed5089
Added infrastructure for recording invoked methods in the profiling information.
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diff
changeset
|
1391 static ByteSize method_count_offset(uint row) { |
|
c76b43ed5089
Added infrastructure for recording invoked methods in the profiling information.
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|
1392 return cell_offset(method_count_cell_index(row)); |
|
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|
1393 } |
|
c76b43ed5089
Added infrastructure for recording invoked methods in the profiling information.
Christian Haeubl <haeubl@ssw.jku.at>
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changeset
|
1394 static int method_cell_index(uint row) { |
|
c76b43ed5089
Added infrastructure for recording invoked methods in the profiling information.
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|
1395 return receiver0_offset + (row + TypeProfileWidth) * receiver_type_row_cell_count; |
|
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|
1396 } |
|
c76b43ed5089
Added infrastructure for recording invoked methods in the profiling information.
Christian Haeubl <haeubl@ssw.jku.at>
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|
1397 static int method_count_cell_index(uint row) { |
|
c76b43ed5089
Added infrastructure for recording invoked methods in the profiling information.
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|
1398 return count0_offset + (row + TypeProfileWidth) * receiver_type_row_cell_count; |
|
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|
1399 } |
|
9762
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
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changeset
|
1400 static uint method_row_limit() { |
|
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
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|
1401 return MethodProfileWidth; |
|
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
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diff
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|
1402 } |
|
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
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9760
diff
changeset
|
1403 |
|
13108
d84fa69a9874
added support for printing method profiles for virtual calls
Doug Simon <doug.simon@oracle.com>
parents:
13086
diff
changeset
|
1404 Method* method(uint row) const { |
|
9762
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
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9760
diff
changeset
|
1405 assert(row < method_row_limit(), "oob"); |
|
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
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|
1406 |
|
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
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9760
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changeset
|
1407 Method* method = (Method*)intptr_at(method_cell_index(row)); |
|
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
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9760
diff
changeset
|
1408 assert(method == NULL || method->is_method(), "must be"); |
|
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
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changeset
|
1409 return method; |
|
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
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diff
changeset
|
1410 } |
|
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
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diff
changeset
|
1411 |
|
13108
d84fa69a9874
added support for printing method profiles for virtual calls
Doug Simon <doug.simon@oracle.com>
parents:
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diff
changeset
|
1412 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
|
1413 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
|
1414 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:
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diff
changeset
|
1415 } |
|
d84fa69a9874
added support for printing method profiles for virtual calls
Doug Simon <doug.simon@oracle.com>
parents:
13086
diff
changeset
|
1416 |
|
9762
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1417 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
|
1418 assert((uint)row < method_row_limit(), "oob"); |
|
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
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9760
diff
changeset
|
1419 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>
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|
1420 } |
|
9760
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changeset
|
1421 |
|
9762
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
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9760
diff
changeset
|
1422 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
|
1423 assert(row < method_row_limit(), "oob"); |
|
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
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9760
diff
changeset
|
1424 set_uint_at(method_count_cell_index(row), count); |
| 0 | 1425 } |
| 1426 | |
|
9762
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
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9760
diff
changeset
|
1427 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
|
1428 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
|
1429 // 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>
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9760
diff
changeset
|
1430 set_nonprofiled_count(0); |
|
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1431 set_method(row, NULL); |
|
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1432 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
|
1433 } |
|
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
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9760
diff
changeset
|
1434 |
|
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
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9760
diff
changeset
|
1435 // GC support |
|
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1436 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
|
1437 |
|
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14543
diff
changeset
|
1438 // Redefinition support |
|
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14543
diff
changeset
|
1439 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
|
1440 #endif |
|
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
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9760
diff
changeset
|
1441 |
| 0 | 1442 #ifndef PRODUCT |
|
13108
d84fa69a9874
added support for printing method profiles for virtual calls
Doug Simon <doug.simon@oracle.com>
parents:
13086
diff
changeset
|
1443 #ifdef GRAAL |
|
d84fa69a9874
added support for printing method profiles for virtual calls
Doug Simon <doug.simon@oracle.com>
parents:
13086
diff
changeset
|
1444 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
|
1445 #endif |
|
17728
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
13080
diff
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|
1446 void print_data_on(outputStream* st, const char* extra = NULL) const; |
|
12875
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8023657: New type profiling points: arguments to call
roland
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12316
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|
1447 #endif |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
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12316
diff
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|
1448 }; |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
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12316
diff
changeset
|
1449 |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
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12316
diff
changeset
|
1450 // VirtualCallTypeData |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
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diff
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|
1451 // |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
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12316
diff
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|
1452 // A VirtualCallTypeData is used to access profiling information about |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
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12316
diff
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|
1453 // a virtual call for which we collect type information about |
|
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
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12875
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|
1454 // arguments and return value. |
|
12875
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|
1455 class VirtualCallTypeData : public VirtualCallData { |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
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12316
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|
1456 private: |
|
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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changeset
|
1457 // entries for arguments if any |
|
12875
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8023657: New type profiling points: arguments to call
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12316
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|
1458 TypeStackSlotEntries _args; |
|
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1459 // entry for return type if any |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
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12875
diff
changeset
|
1460 ReturnTypeEntry _ret; |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
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12875
diff
changeset
|
1461 |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
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12875
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changeset
|
1462 int cell_count_global_offset() const { |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
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12875
diff
changeset
|
1463 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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|
1464 } |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
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12875
diff
changeset
|
1465 |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
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12875
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changeset
|
1466 // number of cells not counting the header |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
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12875
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|
1467 int cell_count_no_header() const { |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1468 return uint_at(cell_count_global_offset()); |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
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12875
diff
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|
1469 } |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
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12875
diff
changeset
|
1470 |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
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12875
diff
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|
1471 void check_number_of_arguments(int total) { |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
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12875
diff
changeset
|
1472 assert(number_of_arguments() == total, "should be set in DataLayout::initialize"); |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
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12875
diff
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|
1473 } |
|
ce0cc25bc5e2
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roland
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diff
changeset
|
1474 |
|
12875
d13d7aba8c12
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12316
diff
changeset
|
1475 public: |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
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12316
diff
changeset
|
1476 VirtualCallTypeData(DataLayout* layout) : |
|
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1477 VirtualCallData(layout), |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
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12875
diff
changeset
|
1478 _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
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12875
diff
changeset
|
1479 _ret(cell_count() - ReturnTypeEntry::static_cell_count()) |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
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12875
diff
changeset
|
1480 { |
|
12875
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8023657: New type profiling points: arguments to call
roland
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12316
diff
changeset
|
1481 assert(layout->tag() == DataLayout::virtual_call_type_data_tag, "wrong type"); |
|
d13d7aba8c12
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1482 // Some compilers (VC++) don't want this passed in member initialization list |
|
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1483 _args.set_profile_data(this); |
|
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1484 _ret.set_profile_data(this); |
|
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1485 } |
|
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1486 |
|
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1487 const TypeStackSlotEntries* args() const { |
|
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1488 assert(has_arguments(), "no profiling of arguments"); |
|
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1489 return &_args; |
|
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1490 } |
|
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1491 |
|
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1492 const ReturnTypeEntry* ret() const { |
|
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1493 assert(has_return(), "no profiling of return value"); |
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1494 return &_ret; |
|
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1495 } |
|
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1496 |
|
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1497 virtual bool is_VirtualCallTypeData() const { return true; } |
|
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1498 |
|
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1499 static int static_cell_count() { |
|
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1500 return -1; |
|
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1501 } |
|
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1502 |
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1503 static int compute_cell_count(BytecodeStream* stream) { |
|
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1504 return VirtualCallData::static_cell_count() + TypeEntriesAtCall::compute_cell_count(stream); |
|
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1505 } |
|
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1506 |
|
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1507 static void initialize(DataLayout* dl, int cell_count) { |
|
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1508 TypeEntriesAtCall::initialize(dl, VirtualCallData::static_cell_count(), cell_count); |
|
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1509 } |
|
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1510 |
|
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1511 virtual void post_initialize(BytecodeStream* stream, MethodData* mdo); |
|
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1512 |
|
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1513 virtual int cell_count() const { |
|
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1514 return VirtualCallData::static_cell_count() + |
|
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1515 TypeEntriesAtCall::header_cell_count() + |
|
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1516 int_at_unchecked(cell_count_global_offset()); |
|
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1517 } |
|
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1518 |
|
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1519 int number_of_arguments() const { |
|
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1520 return cell_count_no_header() / TypeStackSlotEntries::per_arg_count(); |
|
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1521 } |
|
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1522 |
|
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1523 void set_argument_type(int i, Klass* k) { |
|
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1524 assert(has_arguments(), "no arguments!"); |
|
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1525 intptr_t current = _args.type(i); |
|
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1526 _args.set_type(i, TypeEntries::with_status(k, current)); |
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1527 } |
|
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1528 |
|
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1529 void set_return_type(Klass* k) { |
|
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1530 assert(has_return(), "no return!"); |
|
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1531 intptr_t current = _ret.type(); |
|
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1532 _ret.set_type(TypeEntries::with_status(k, current)); |
|
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1533 } |
|
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1534 |
|
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1535 // An entry for a return value takes less space than an entry for an |
|
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1536 // argument, so if the remainder of the number of cells divided by |
|
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1537 // the number of cells for an argument is not null, a return value |
|
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1538 // is profiled in this object. |
|
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1539 bool has_return() const { |
|
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1540 bool res = (cell_count_no_header() % TypeStackSlotEntries::per_arg_count()) != 0; |
|
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1541 assert (!res || TypeEntriesAtCall::return_profiling_enabled(), "no profiling of return values"); |
|
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1542 return res; |
|
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1543 } |
|
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1544 |
|
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1545 // An entry for a return value takes less space than an entry for an |
|
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1546 // argument so if the number of cells exceeds the number of cells |
|
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1547 // needed for an argument, this object contains type information for |
|
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1548 // at least one argument. |
|
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1549 bool has_arguments() const { |
|
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1550 bool res = cell_count_no_header() >= TypeStackSlotEntries::per_arg_count(); |
|
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1551 assert (!res || TypeEntriesAtCall::arguments_profiling_enabled(), "no profiling of arguments"); |
|
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1552 return res; |
|
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|
1553 } |
|
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1554 |
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1555 // Code generation support |
|
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1556 static ByteSize args_data_offset() { |
|
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1557 return cell_offset(VirtualCallData::static_cell_count()) + TypeEntriesAtCall::args_data_offset(); |
|
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1558 } |
|
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1559 |
|
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1560 // GC support |
|
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1561 virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure) { |
|
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1562 ReceiverTypeData::clean_weak_klass_links(is_alive_closure); |
|
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1563 if (has_arguments()) { |
|
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1564 _args.clean_weak_klass_links(is_alive_closure); |
|
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1565 } |
|
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1566 if (has_return()) { |
|
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1567 _ret.clean_weak_klass_links(is_alive_closure); |
|
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1568 } |
|
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1569 } |
|
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1570 |
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1571 #ifndef PRODUCT |
|
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1572 virtual void print_data_on(outputStream* st, const char* extra = NULL) const; |
| 0 | 1573 #endif |
| 1574 }; | |
| 1575 | |
| 1576 // RetData | |
| 1577 // | |
| 1578 // A RetData is used to access profiling information for a ret bytecode. | |
| 1579 // It is composed of a count of the number of times that the ret has | |
| 1580 // been executed, followed by a series of triples of the form | |
| 1581 // (bci, count, di) which count the number of times that some bci was the | |
| 1582 // target of the ret and cache a corresponding data displacement. | |
| 1583 class RetData : public CounterData { | |
| 1584 protected: | |
| 1585 enum { | |
| 1586 bci0_offset = counter_cell_count, | |
| 1587 count0_offset, | |
| 1588 displacement0_offset, | |
| 1589 ret_row_cell_count = (displacement0_offset + 1) - bci0_offset | |
| 1590 }; | |
| 1591 | |
| 1592 void set_bci(uint row, int bci) { | |
| 1593 assert((uint)row < row_limit(), "oob"); | |
| 1594 set_int_at(bci0_offset + row * ret_row_cell_count, bci); | |
| 1595 } | |
| 1596 void release_set_bci(uint row, int bci) { | |
| 1597 assert((uint)row < row_limit(), "oob"); | |
| 1598 // 'release' when setting the bci acts as a valid flag for other | |
| 1599 // threads wrt bci_count and bci_displacement. | |
| 1600 release_set_int_at(bci0_offset + row * ret_row_cell_count, bci); | |
| 1601 } | |
| 1602 void set_bci_count(uint row, uint count) { | |
| 1603 assert((uint)row < row_limit(), "oob"); | |
| 1604 set_uint_at(count0_offset + row * ret_row_cell_count, count); | |
| 1605 } | |
| 1606 void set_bci_displacement(uint row, int disp) { | |
| 1607 set_int_at(displacement0_offset + row * ret_row_cell_count, disp); | |
| 1608 } | |
| 1609 | |
| 1610 public: | |
| 1611 RetData(DataLayout* layout) : CounterData(layout) { | |
| 1612 assert(layout->tag() == DataLayout::ret_data_tag, "wrong type"); | |
| 1613 } | |
| 1614 | |
|
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1615 virtual bool is_RetData() const { return true; } |
| 0 | 1616 |
| 1617 enum { | |
| 1618 no_bci = -1 // value of bci when bci1/2 are not in use. | |
| 1619 }; | |
| 1620 | |
| 1621 static int static_cell_count() { | |
| 1622 return counter_cell_count + (uint) BciProfileWidth * ret_row_cell_count; | |
| 1623 } | |
| 1624 | |
|
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1625 virtual int cell_count() const { |
| 0 | 1626 return static_cell_count(); |
| 1627 } | |
| 1628 | |
| 1629 static uint row_limit() { | |
| 1630 return BciProfileWidth; | |
| 1631 } | |
| 1632 static int bci_cell_index(uint row) { | |
| 1633 return bci0_offset + row * ret_row_cell_count; | |
| 1634 } | |
| 1635 static int bci_count_cell_index(uint row) { | |
| 1636 return count0_offset + row * ret_row_cell_count; | |
| 1637 } | |
| 1638 static int bci_displacement_cell_index(uint row) { | |
| 1639 return displacement0_offset + row * ret_row_cell_count; | |
| 1640 } | |
| 1641 | |
| 1642 // Direct accessors | |
|
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1643 int bci(uint row) const { |
| 0 | 1644 return int_at(bci_cell_index(row)); |
| 1645 } | |
|
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1646 uint bci_count(uint row) const { |
| 0 | 1647 return uint_at(bci_count_cell_index(row)); |
| 1648 } | |
|
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1649 int bci_displacement(uint row) const { |
| 0 | 1650 return int_at(bci_displacement_cell_index(row)); |
| 1651 } | |
| 1652 | |
| 1653 // Interpreter Runtime support | |
|
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1654 address fixup_ret(int return_bci, MethodData* mdo); |
| 0 | 1655 |
| 1656 // Code generation support | |
| 1657 static ByteSize bci_offset(uint row) { | |
| 1658 return cell_offset(bci_cell_index(row)); | |
| 1659 } | |
| 1660 static ByteSize bci_count_offset(uint row) { | |
| 1661 return cell_offset(bci_count_cell_index(row)); | |
| 1662 } | |
| 1663 static ByteSize bci_displacement_offset(uint row) { | |
| 1664 return cell_offset(bci_displacement_cell_index(row)); | |
| 1665 } | |
| 1666 | |
|
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1667 #ifdef CC_INTERP |
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1668 static DataLayout* advance(MethodData *md, int bci); |
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1669 #endif // CC_INTERP |
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1670 |
| 0 | 1671 // Specific initialization. |
|
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1672 void post_initialize(BytecodeStream* stream, MethodData* mdo); |
| 0 | 1673 |
| 1674 #ifndef PRODUCT | |
|
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1675 void print_data_on(outputStream* st, const char* extra = NULL) const; |
| 0 | 1676 #endif |
| 1677 }; | |
| 1678 | |
| 1679 // BranchData | |
| 1680 // | |
| 1681 // A BranchData is used to access profiling data for a two-way branch. | |
| 1682 // It consists of taken and not_taken counts as well as a data displacement | |
| 1683 // for the taken case. | |
| 1684 class BranchData : public JumpData { | |
| 1685 protected: | |
| 1686 enum { | |
| 1687 not_taken_off_set = jump_cell_count, | |
| 1688 branch_cell_count | |
| 1689 }; | |
| 1690 | |
| 1691 void set_displacement(int displacement) { | |
| 1692 set_int_at(displacement_off_set, displacement); | |
| 1693 } | |
| 1694 | |
| 1695 public: | |
| 1696 BranchData(DataLayout* layout) : JumpData(layout) { | |
| 1697 assert(layout->tag() == DataLayout::branch_data_tag, "wrong type"); | |
| 1698 } | |
| 1699 | |
|
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1700 virtual bool is_BranchData() const { return true; } |
| 0 | 1701 |
| 1702 static int static_cell_count() { | |
| 1703 return branch_cell_count; | |
| 1704 } | |
| 1705 | |
|
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1706 virtual int cell_count() const { |
| 0 | 1707 return static_cell_count(); |
| 1708 } | |
| 1709 | |
| 1710 // Direct accessor | |
|
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1711 uint not_taken() const { |
| 0 | 1712 return uint_at(not_taken_off_set); |
| 1713 } | |
| 1714 | |
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1715 void set_not_taken(uint cnt) { |
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1716 set_uint_at(not_taken_off_set, cnt); |
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1717 } |
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1718 |
| 0 | 1719 uint inc_not_taken() { |
| 1720 uint cnt = not_taken() + 1; | |
| 1721 // Did we wrap? Will compiler screw us?? | |
| 1722 if (cnt == 0) cnt--; | |
| 1723 set_uint_at(not_taken_off_set, cnt); | |
| 1724 return cnt; | |
| 1725 } | |
| 1726 | |
| 1727 // Code generation support | |
| 1728 static ByteSize not_taken_offset() { | |
| 1729 return cell_offset(not_taken_off_set); | |
| 1730 } | |
| 1731 static ByteSize branch_data_size() { | |
| 1732 return cell_offset(branch_cell_count); | |
| 1733 } | |
| 1734 | |
|
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1735 #ifdef CC_INTERP |
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1736 static int branch_data_size_in_bytes() { |
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1737 return cell_offset_in_bytes(branch_cell_count); |
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1738 } |
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1739 |
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1740 static void increment_not_taken_count_no_overflow(DataLayout* layout) { |
|
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1741 increment_uint_at_no_overflow(layout, not_taken_off_set); |
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1742 } |
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1743 |
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1744 static DataLayout* advance_not_taken(DataLayout* layout) { |
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1745 return (DataLayout*) (((address)layout) + (ssize_t)BranchData::branch_data_size_in_bytes()); |
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1746 } |
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1747 #endif // CC_INTERP |
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1748 |
| 0 | 1749 // Specific initialization. |
|
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1750 void post_initialize(BytecodeStream* stream, MethodData* mdo); |
| 0 | 1751 |
| 1752 #ifndef PRODUCT | |
|
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1753 void print_data_on(outputStream* st, const char* extra = NULL) const; |
| 0 | 1754 #endif |
| 1755 }; | |
| 1756 | |
| 1757 // ArrayData | |
| 1758 // | |
| 1759 // A ArrayData is a base class for accessing profiling data which does | |
| 1760 // not have a statically known size. It consists of an array length | |
| 1761 // and an array start. | |
| 1762 class ArrayData : public ProfileData { | |
| 1763 protected: | |
| 1764 friend class DataLayout; | |
| 1765 | |
| 1766 enum { | |
| 1767 array_len_off_set, | |
| 1768 array_start_off_set | |
| 1769 }; | |
| 1770 | |
|
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1771 uint array_uint_at(int index) const { |
| 0 | 1772 int aindex = index + array_start_off_set; |
| 1773 return uint_at(aindex); | |
| 1774 } | |
|
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1775 int array_int_at(int index) const { |
| 0 | 1776 int aindex = index + array_start_off_set; |
| 1777 return int_at(aindex); | |
| 1778 } | |
|
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1779 oop array_oop_at(int index) const { |
| 0 | 1780 int aindex = index + array_start_off_set; |
| 1781 return oop_at(aindex); | |
| 1782 } | |
| 1783 void array_set_int_at(int index, int value) { | |
| 1784 int aindex = index + array_start_off_set; | |
| 1785 set_int_at(aindex, value); | |
| 1786 } | |
| 1787 | |
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1788 #ifdef CC_INTERP |
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1789 // Static low level accessors for DataLayout with ArrayData's semantics. |
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1790 |
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1791 static void increment_array_uint_at_no_overflow(DataLayout* layout, int index) { |
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1792 int aindex = index + array_start_off_set; |
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1793 increment_uint_at_no_overflow(layout, aindex); |
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1794 } |
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1795 |
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1796 static int array_int_at(DataLayout* layout, int index) { |
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1797 int aindex = index + array_start_off_set; |
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1798 return int_at(layout, aindex); |
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1799 } |
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1800 #endif // CC_INTERP |
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1801 |
| 0 | 1802 // Code generation support for subclasses. |
| 1803 static ByteSize array_element_offset(int index) { | |
| 1804 return cell_offset(array_start_off_set + index); | |
| 1805 } | |
| 1806 | |
| 1807 public: | |
| 1808 ArrayData(DataLayout* layout) : ProfileData(layout) {} | |
| 1809 | |
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1810 virtual bool is_ArrayData() const { return true; } |
| 0 | 1811 |
| 1812 static int static_cell_count() { | |
| 1813 return -1; | |
| 1814 } | |
| 1815 | |
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1816 int array_len() const { |
| 0 | 1817 return int_at_unchecked(array_len_off_set); |
| 1818 } | |
| 1819 | |
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1820 virtual int cell_count() const { |
| 0 | 1821 return array_len() + 1; |
| 1822 } | |
| 1823 | |
| 1824 // Code generation support | |
| 1825 static ByteSize array_len_offset() { | |
| 1826 return cell_offset(array_len_off_set); | |
| 1827 } | |
| 1828 static ByteSize array_start_offset() { | |
| 1829 return cell_offset(array_start_off_set); | |
| 1830 } | |
| 1831 }; | |
| 1832 | |
| 1833 // MultiBranchData | |
| 1834 // | |
| 1835 // A MultiBranchData is used to access profiling information for | |
| 1836 // a multi-way branch (*switch bytecodes). It consists of a series | |
| 1837 // of (count, displacement) pairs, which count the number of times each | |
| 1838 // case was taken and specify the data displacment for each branch target. | |
| 1839 class MultiBranchData : public ArrayData { | |
| 1840 protected: | |
| 1841 enum { | |
| 1842 default_count_off_set, | |
| 1843 default_disaplacement_off_set, | |
| 1844 case_array_start | |
| 1845 }; | |
| 1846 enum { | |
| 1847 relative_count_off_set, | |
| 1848 relative_displacement_off_set, | |
| 1849 per_case_cell_count | |
| 1850 }; | |
| 1851 | |
| 1852 void set_default_displacement(int displacement) { | |
| 1853 array_set_int_at(default_disaplacement_off_set, displacement); | |
| 1854 } | |
| 1855 void set_displacement_at(int index, int displacement) { | |
| 1856 array_set_int_at(case_array_start + | |
| 1857 index * per_case_cell_count + | |
| 1858 relative_displacement_off_set, | |
| 1859 displacement); | |
| 1860 } | |
| 1861 | |
| 1862 public: | |
| 1863 MultiBranchData(DataLayout* layout) : ArrayData(layout) { | |
| 1864 assert(layout->tag() == DataLayout::multi_branch_data_tag, "wrong type"); | |
| 1865 } | |
| 1866 | |
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1867 virtual bool is_MultiBranchData() const { return true; } |
| 0 | 1868 |
| 1869 static int compute_cell_count(BytecodeStream* stream); | |
| 1870 | |
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1871 int number_of_cases() const { |
| 0 | 1872 int alen = array_len() - 2; // get rid of default case here. |
| 1873 assert(alen % per_case_cell_count == 0, "must be even"); | |
| 1874 return (alen / per_case_cell_count); | |
| 1875 } | |
| 1876 | |
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1877 uint default_count() const { |
| 0 | 1878 return array_uint_at(default_count_off_set); |
| 1879 } | |
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1880 int default_displacement() const { |
| 0 | 1881 return array_int_at(default_disaplacement_off_set); |
| 1882 } | |
| 1883 | |
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1884 uint count_at(int index) const { |
| 0 | 1885 return array_uint_at(case_array_start + |
| 1886 index * per_case_cell_count + | |
| 1887 relative_count_off_set); | |
| 1888 } | |
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1889 int displacement_at(int index) const { |
| 0 | 1890 return array_int_at(case_array_start + |
| 1891 index * per_case_cell_count + | |
| 1892 relative_displacement_off_set); | |
| 1893 } | |
| 1894 | |
| 1895 // Code generation support | |
| 1896 static ByteSize default_count_offset() { | |
| 1897 return array_element_offset(default_count_off_set); | |
| 1898 } | |
| 1899 static ByteSize default_displacement_offset() { | |
| 1900 return array_element_offset(default_disaplacement_off_set); | |
| 1901 } | |
| 1902 static ByteSize case_count_offset(int index) { | |
| 1903 return case_array_offset() + | |
| 1904 (per_case_size() * index) + | |
| 1905 relative_count_offset(); | |
| 1906 } | |
| 1907 static ByteSize case_array_offset() { | |
| 1908 return array_element_offset(case_array_start); | |
| 1909 } | |
| 1910 static ByteSize per_case_size() { | |
| 1911 return in_ByteSize(per_case_cell_count) * cell_size; | |
| 1912 } | |
| 1913 static ByteSize relative_count_offset() { | |
| 1914 return in_ByteSize(relative_count_off_set) * cell_size; | |
| 1915 } | |
| 1916 static ByteSize relative_displacement_offset() { | |
| 1917 return in_ByteSize(relative_displacement_off_set) * cell_size; | |
| 1918 } | |
| 1919 | |
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1920 #ifdef CC_INTERP |
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1921 static void increment_count_no_overflow(DataLayout* layout, int index) { |
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1922 if (index == -1) { |
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1923 increment_array_uint_at_no_overflow(layout, default_count_off_set); |
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1924 } else { |
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1925 increment_array_uint_at_no_overflow(layout, case_array_start + |
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1926 index * per_case_cell_count + |
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1927 relative_count_off_set); |
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1928 } |
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1929 } |
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1930 |
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1931 static DataLayout* advance(DataLayout* layout, int index) { |
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1932 if (index == -1) { |
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1933 return (DataLayout*) (((address)layout) + (ssize_t)array_int_at(layout, default_disaplacement_off_set)); |
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1934 } else { |
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1935 return (DataLayout*) (((address)layout) + (ssize_t)array_int_at(layout, case_array_start + |
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1936 index * per_case_cell_count + |
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1937 relative_displacement_off_set)); |
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1938 } |
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1939 } |
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1940 #endif // CC_INTERP |
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1941 |
| 0 | 1942 // Specific initialization. |
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1943 void post_initialize(BytecodeStream* stream, MethodData* mdo); |
| 0 | 1944 |
| 1945 #ifndef PRODUCT | |
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1946 void print_data_on(outputStream* st, const char* extra = NULL) const; |
| 0 | 1947 #endif |
| 1948 }; | |
| 1949 | |
|
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1950 class ArgInfoData : public ArrayData { |
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1951 |
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1952 public: |
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1953 ArgInfoData(DataLayout* layout) : ArrayData(layout) { |
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1954 assert(layout->tag() == DataLayout::arg_info_data_tag, "wrong type"); |
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1955 } |
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1956 |
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1957 virtual bool is_ArgInfoData() const { return true; } |
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1958 |
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1959 |
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1960 int number_of_args() const { |
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1961 return array_len(); |
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1962 } |
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1963 |
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1964 uint arg_modified(int arg) const { |
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1965 return array_uint_at(arg); |
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1966 } |
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1967 |
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1968 void set_arg_modified(int arg, uint val) { |
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1969 array_set_int_at(arg, val); |
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1970 } |
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1971 |
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1972 #ifndef PRODUCT |
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1973 void print_data_on(outputStream* st, const char* extra = NULL) const; |
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1974 #endif |
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1975 }; |
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1976 |
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1977 // ParametersTypeData |
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1978 // |
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1979 // A ParametersTypeData is used to access profiling information about |
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1980 // types of parameters to a method |
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1981 class ParametersTypeData : public ArrayData { |
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1982 |
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1983 private: |
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1984 TypeStackSlotEntries _parameters; |
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1985 |
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1986 static int stack_slot_local_offset(int i) { |
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1987 assert_profiling_enabled(); |
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1988 return array_start_off_set + TypeStackSlotEntries::stack_slot_local_offset(i); |
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1989 } |
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1990 |
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1991 static int type_local_offset(int i) { |
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1992 assert_profiling_enabled(); |
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1993 return array_start_off_set + TypeStackSlotEntries::type_local_offset(i); |
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1994 } |
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1995 |
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1996 static bool profiling_enabled(); |
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1997 static void assert_profiling_enabled() { |
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1998 assert(profiling_enabled(), "method parameters profiling should be on"); |
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1999 } |
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2000 |
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2001 public: |
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2002 ParametersTypeData(DataLayout* layout) : ArrayData(layout), _parameters(1, number_of_parameters()) { |
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2003 assert(layout->tag() == DataLayout::parameters_type_data_tag, "wrong type"); |
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2004 // Some compilers (VC++) don't want this passed in member initialization list |
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2005 _parameters.set_profile_data(this); |
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2006 } |
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2007 |
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2008 static int compute_cell_count(Method* m); |
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2009 |
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2010 virtual bool is_ParametersTypeData() const { return true; } |
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2011 |
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2012 virtual void post_initialize(BytecodeStream* stream, MethodData* mdo); |
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2013 |
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2014 int number_of_parameters() const { |
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2015 return array_len() / TypeStackSlotEntries::per_arg_count(); |
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|
2016 } |
|
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2017 |
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2018 const TypeStackSlotEntries* parameters() const { return &_parameters; } |
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2019 |
|
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2020 uint stack_slot(int i) const { |
|
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2021 return _parameters.stack_slot(i); |
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|
2022 } |
|
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2023 |
|
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2024 void set_type(int i, Klass* k) { |
|
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2025 intptr_t current = _parameters.type(i); |
|
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2026 _parameters.set_type(i, TypeEntries::with_status((intptr_t)k, current)); |
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2027 } |
|
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|
2028 |
|
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2029 virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure) { |
|
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2030 _parameters.clean_weak_klass_links(is_alive_closure); |
|
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2031 } |
|
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2032 |
|
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2033 #ifndef PRODUCT |
|
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2034 virtual void print_data_on(outputStream* st, const char* extra = NULL) const; |
|
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2035 #endif |
|
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|
2036 |
|
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2037 static ByteSize stack_slot_offset(int i) { |
|
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2038 return cell_offset(stack_slot_local_offset(i)); |
|
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|
2039 } |
|
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|
2040 |
|
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2041 static ByteSize type_offset(int i) { |
|
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|
2042 return cell_offset(type_local_offset(i)); |
|
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|
2043 } |
|
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|
2044 }; |
|
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|
2045 |
|
17728
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|
2046 // SpeculativeTrapData |
|
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|
2047 // |
|
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|
2048 // A SpeculativeTrapData is used to record traps due to type |
|
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|
2049 // speculation. It records the root of the compilation: that type |
|
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2050 // speculation is wrong in the context of one compilation (for |
|
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2051 // method1) doesn't mean it's wrong in the context of another one (for |
|
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2052 // method2). Type speculation could have more/different data in the |
|
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|
2053 // context of the compilation of method2 and it's worthwhile to try an |
|
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|
2054 // optimization that failed for compilation of method1 in the context |
|
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|
2055 // of compilation of method2. |
|
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|
2056 // Space for SpeculativeTrapData entries is allocated from the extra |
|
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|
2057 // data space in the MDO. If we run out of space, the trap data for |
|
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|
2058 // the ProfileData at that bci is updated. |
|
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|
2059 class SpeculativeTrapData : public ProfileData { |
|
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|
2060 protected: |
|
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|
2061 enum { |
|
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|
2062 method_offset, |
|
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|
2063 speculative_trap_cell_count |
|
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|
2064 }; |
|
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|
2065 public: |
|
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|
2066 SpeculativeTrapData(DataLayout* layout) : ProfileData(layout) { |
|
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|
2067 assert(layout->tag() == DataLayout::speculative_trap_data_tag, "wrong type"); |
|
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|
2068 } |
|
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|
2069 |
|
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|
2070 virtual bool is_SpeculativeTrapData() const { return true; } |
|
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|
2071 |
|
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|
2072 static int static_cell_count() { |
|
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|
2073 return speculative_trap_cell_count; |
|
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|
2074 } |
|
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|
2075 |
|
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|
2076 virtual int cell_count() const { |
|
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|
2077 return static_cell_count(); |
|
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|
2078 } |
|
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|
2079 |
|
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|
2080 // Direct accessor |
|
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|
2081 Method* method() const { |
|
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|
2082 return (Method*)intptr_at(method_offset); |
|
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|
2083 } |
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2084 |
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2085 void set_method(Method* m) { |
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2086 set_intptr_at(method_offset, (intptr_t)m); |
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2087 } |
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2088 |
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2089 #ifndef PRODUCT |
|
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2090 virtual void print_data_on(outputStream* st, const char* extra = NULL) const; |
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2091 #endif |
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2092 }; |
|
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2093 |
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2094 // MethodData* |
| 0 | 2095 // |
|
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2096 // A MethodData* holds information which has been collected about |
| 0 | 2097 // a method. Its layout looks like this: |
| 2098 // | |
| 2099 // ----------------------------- | |
| 2100 // | header | | |
| 2101 // | klass | | |
| 2102 // ----------------------------- | |
| 2103 // | method | | |
|
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2104 // | size of the MethodData* | |
| 0 | 2105 // ----------------------------- |
| 2106 // | Data entries... | | |
| 2107 // | (variable size) | | |
| 2108 // | | | |
| 2109 // . . | |
| 2110 // . . | |
| 2111 // . . | |
| 2112 // | | | |
| 2113 // ----------------------------- | |
| 2114 // | |
| 2115 // The data entry area is a heterogeneous array of DataLayouts. Each | |
| 2116 // DataLayout in the array corresponds to a specific bytecode in the | |
| 2117 // method. The entries in the array are sorted by the corresponding | |
| 2118 // bytecode. Access to the data is via resource-allocated ProfileData, | |
| 2119 // which point to the underlying blocks of DataLayout structures. | |
| 2120 // | |
| 2121 // During interpretation, if profiling in enabled, the interpreter | |
| 2122 // maintains a method data pointer (mdp), which points at the entry | |
| 2123 // in the array corresponding to the current bci. In the course of | |
| 2124 // intepretation, when a bytecode is encountered that has profile data | |
| 2125 // associated with it, the entry pointed to by mdp is updated, then the | |
| 2126 // mdp is adjusted to point to the next appropriate DataLayout. If mdp | |
| 2127 // is NULL to begin with, the interpreter assumes that the current method | |
| 2128 // is not (yet) being profiled. | |
| 2129 // | |
|
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2130 // In MethodData* parlance, "dp" is a "data pointer", the actual address |
| 0 | 2131 // of a DataLayout element. A "di" is a "data index", the offset in bytes |
| 2132 // from the base of the data entry array. A "displacement" is the byte offset | |
| 2133 // in certain ProfileData objects that indicate the amount the mdp must be | |
| 2134 // adjusted in the event of a change in control flow. | |
| 2135 // | |
| 2136 | |
|
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2137 CC_INTERP_ONLY(class BytecodeInterpreter;) |
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2138 |
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2139 class MethodData : public Metadata { |
| 0 | 2140 friend class VMStructs; |
|
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2141 CC_INTERP_ONLY(friend class BytecodeInterpreter;) |
| 0 | 2142 private: |
| 2143 friend class ProfileData; | |
| 2144 | |
|
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2145 // Back pointer to the Method* |
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2146 Method* _method; |
| 0 | 2147 |
| 2148 // Size of this oop in bytes | |
| 2149 int _size; | |
| 2150 | |
| 2151 // Cached hint for bci_to_dp and bci_to_data | |
| 2152 int _hint_di; | |
| 2153 | |
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2154 Mutex _extra_data_lock; |
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2155 |
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2156 MethodData(methodHandle method, int size, TRAPS); |
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2157 public: |
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|
2158 static MethodData* allocate(ClassLoaderData* loader_data, methodHandle method, TRAPS); |
|
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2159 MethodData() : _extra_data_lock(Monitor::leaf, "MDO extra data lock") {}; // For ciMethodData |
|
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2160 |
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|
2161 bool is_methodData() const volatile { return true; } |
|
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|
2162 void initialize(); |
|
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2163 |
| 0 | 2164 // Whole-method sticky bits and flags |
| 2165 enum { | |
| 18041 | 2166 _trap_hist_limit = 19 GRAAL_ONLY(+2), // decoupled from Deoptimization::Reason_LIMIT |
| 0 | 2167 _trap_hist_mask = max_jubyte, |
| 2168 _extra_data_count = 4 // extra DataLayout headers, for trap history | |
| 2169 }; // Public flag values | |
| 2170 private: | |
| 2171 uint _nof_decompiles; // count of all nmethod removals | |
| 2172 uint _nof_overflow_recompiles; // recompile count, excluding recomp. bits | |
| 2173 uint _nof_overflow_traps; // trap count, excluding _trap_hist | |
| 2174 union { | |
| 2175 intptr_t _align; | |
|
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|
2176 #ifdef GRAAL |
|
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|
2177 u1 _array[2*_trap_hist_limit]; |
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2178 #else |
| 0 | 2179 u1 _array[_trap_hist_limit]; |
|
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|
2180 #endif |
| 0 | 2181 } _trap_hist; |
| 2182 | |
| 2183 // Support for interprocedural escape analysis, from Thomas Kotzmann. | |
| 2184 intx _eflags; // flags on escape information | |
| 2185 intx _arg_local; // bit set of non-escaping arguments | |
| 2186 intx _arg_stack; // bit set of stack-allocatable arguments | |
| 2187 intx _arg_returned; // bit set of returned arguments | |
| 2188 | |
| 1783 | 2189 int _creation_mileage; // method mileage at MDO creation |
| 2190 | |
| 2191 // How many invocations has this MDO seen? | |
| 2192 // These counters are used to determine the exact age of MDO. | |
| 2193 // We need those because in tiered a method can be concurrently | |
| 2194 // executed at different levels. | |
| 2195 InvocationCounter _invocation_counter; | |
| 2196 // Same for backedges. | |
| 2197 InvocationCounter _backedge_counter; | |
| 2252 | 2198 // Counter values at the time profiling started. |
| 2199 int _invocation_counter_start; | |
| 2200 int _backedge_counter_start; | |
| 17780 | 2201 |
| 2202 #if INCLUDE_RTM_OPT | |
| 2203 // State of RTM code generation during compilation of the method | |
| 2204 int _rtm_state; | |
| 2205 #endif | |
| 2206 | |
| 1783 | 2207 // Number of loops and blocks is computed when compiling the first |
| 2208 // time with C1. It is used to determine if method is trivial. | |
| 2209 short _num_loops; | |
| 2210 short _num_blocks; | |
| 2211 // Highest compile level this method has ever seen. | |
| 2212 u1 _highest_comp_level; | |
| 2213 // Same for OSR level | |
| 2214 u1 _highest_osr_comp_level; | |
| 2215 // Does this method contain anything worth profiling? | |
| 2216 bool _would_profile; | |
| 0 | 2217 |
|
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|
2218 #ifdef GRAAL |
|
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|
2219 // Support for HotSpotMethodData.setCompiledGraphSize(int) |
|
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|
2220 int _graal_node_count; |
|
12eaf1a47a90
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|
2221 #endif |
|
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|
2222 |
| 0 | 2223 // Size of _data array in bytes. (Excludes header and extra_data fields.) |
| 2224 int _data_size; | |
| 2225 | |
|
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|
2226 // data index for the area dedicated to parameters. -1 if no |
|
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|
2227 // parameter profiling. |
|
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|
2228 int _parameters_type_data_di; |
|
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|
2229 |
| 0 | 2230 // Beginning of the data entries |
| 2231 intptr_t _data[1]; | |
| 2232 | |
| 2233 // Helper for size computation | |
| 2234 static int compute_data_size(BytecodeStream* stream); | |
| 2235 static int bytecode_cell_count(Bytecodes::Code code); | |
|
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|
2236 static bool is_speculative_trap_bytecode(Bytecodes::Code code); |
| 0 | 2237 enum { no_profile_data = -1, variable_cell_count = -2 }; |
| 2238 | |
| 2239 // Helper for initialization | |
|
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2240 DataLayout* data_layout_at(int data_index) const { |
| 0 | 2241 assert(data_index % sizeof(intptr_t) == 0, "unaligned"); |
| 2242 return (DataLayout*) (((address)_data) + data_index); | |
| 2243 } | |
| 2244 | |
| 2245 // Initialize an individual data segment. Returns the size of | |
| 2246 // the segment in bytes. | |
| 2247 int initialize_data(BytecodeStream* stream, int data_index); | |
| 2248 | |
| 2249 // Helper for data_at | |
|
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2250 DataLayout* limit_data_position() const { |
| 0 | 2251 return (DataLayout*)((address)data_base() + _data_size); |
| 2252 } | |
|
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2253 bool out_of_bounds(int data_index) const { |
| 0 | 2254 return data_index >= data_size(); |
| 2255 } | |
| 2256 | |
| 2257 // Give each of the data entries a chance to perform specific | |
| 2258 // data initialization. | |
| 2259 void post_initialize(BytecodeStream* stream); | |
| 2260 | |
| 2261 // hint accessors | |
| 2262 int hint_di() const { return _hint_di; } | |
| 2263 void set_hint_di(int di) { | |
| 2264 assert(!out_of_bounds(di), "hint_di out of bounds"); | |
| 2265 _hint_di = di; | |
| 2266 } | |
| 2267 ProfileData* data_before(int bci) { | |
| 2268 // avoid SEGV on this edge case | |
| 2269 if (data_size() == 0) | |
| 2270 return NULL; | |
| 2271 int hint = hint_di(); | |
| 2272 if (data_layout_at(hint)->bci() <= bci) | |
| 2273 return data_at(hint); | |
| 2274 return first_data(); | |
| 2275 } | |
| 2276 | |
| 2277 // What is the index of the first data entry? | |
|
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|
2278 int first_di() const { return 0; } |
| 0 | 2279 |
|
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2280 ProfileData* bci_to_extra_data_helper(int bci, Method* m, DataLayout*& dp, bool concurrent); |
| 0 | 2281 // Find or create an extra ProfileData: |
|
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2282 ProfileData* bci_to_extra_data(int bci, Method* m, bool create_if_missing); |
| 0 | 2283 |
|
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|
2284 // return the argument info cell |
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|
2285 ArgInfoData *arg_info(); |
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|
2286 |
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2287 enum { |
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2288 no_type_profile = 0, |
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|
2289 type_profile_jsr292 = 1, |
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2290 type_profile_all = 2 |
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|
2291 }; |
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|
2292 |
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|
2293 static bool profile_jsr292(methodHandle m, int bci); |
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2294 static int profile_arguments_flag(); |
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|
2295 static bool profile_all_arguments(); |
|
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|
2296 static bool profile_arguments_for_invoke(methodHandle m, int bci); |
|
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2297 static int profile_return_flag(); |
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2298 static bool profile_all_return(); |
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2299 static bool profile_return_for_invoke(methodHandle m, int bci); |
|
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|
2300 static int profile_parameters_flag(); |
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|
2301 static bool profile_parameters_jsr292_only(); |
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2302 static bool profile_all_parameters(); |
|
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2303 |
|
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2304 void clean_extra_data(BoolObjectClosure* is_alive); |
|
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2305 void clean_extra_data_helper(DataLayout* dp, int shift, bool reset = false); |
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2306 void verify_extra_data_clean(BoolObjectClosure* is_alive); |
|
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2307 |
| 0 | 2308 public: |
| 2309 static int header_size() { | |
|
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2310 return sizeof(MethodData)/wordSize; |
| 0 | 2311 } |
| 2312 | |
|
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2313 // Compute the size of a MethodData* before it is created. |
| 0 | 2314 static int compute_allocation_size_in_bytes(methodHandle method); |
| 2315 static int compute_allocation_size_in_words(methodHandle method); | |
|
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2316 static int compute_extra_data_count(int data_size, int empty_bc_count, bool needs_speculative_traps); |
| 0 | 2317 |
| 2318 // Determine if a given bytecode can have profile information. | |
| 2319 static bool bytecode_has_profile(Bytecodes::Code code) { | |
| 2320 return bytecode_cell_count(code) != no_profile_data; | |
| 2321 } | |
| 2322 | |
|
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|
2323 // reset into original state |
|
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|
2324 void init(); |
| 0 | 2325 |
| 2326 // My size | |
|
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|
2327 int size_in_bytes() const { return _size; } |
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2328 int size() const { return align_object_size(align_size_up(_size, BytesPerWord)/BytesPerWord); } |
| 7956 | 2329 #if INCLUDE_SERVICES |
| 2330 void collect_statistics(KlassSizeStats *sz) const; | |
| 2331 #endif | |
| 0 | 2332 |
| 2333 int creation_mileage() const { return _creation_mileage; } | |
| 2334 void set_creation_mileage(int x) { _creation_mileage = x; } | |
| 1783 | 2335 |
| 2336 int invocation_count() { | |
| 2337 if (invocation_counter()->carry()) { | |
| 2338 return InvocationCounter::count_limit; | |
| 2339 } | |
| 2340 return invocation_counter()->count(); | |
| 2341 } | |
| 2342 int backedge_count() { | |
| 2343 if (backedge_counter()->carry()) { | |
| 2344 return InvocationCounter::count_limit; | |
| 2345 } | |
| 2346 return backedge_counter()->count(); | |
| 2347 } | |
| 2348 | |
| 2252 | 2349 int invocation_count_start() { |
| 2350 if (invocation_counter()->carry()) { | |
| 2351 return 0; | |
| 2352 } | |
| 2353 return _invocation_counter_start; | |
| 2354 } | |
| 2355 | |
| 2356 int backedge_count_start() { | |
| 2357 if (backedge_counter()->carry()) { | |
| 2358 return 0; | |
| 2359 } | |
| 2360 return _backedge_counter_start; | |
| 2361 } | |
| 2362 | |
| 2363 int invocation_count_delta() { return invocation_count() - invocation_count_start(); } | |
| 2364 int backedge_count_delta() { return backedge_count() - backedge_count_start(); } | |
| 2365 | |
| 2366 void reset_start_counters() { | |
| 2367 _invocation_counter_start = invocation_count(); | |
| 2368 _backedge_counter_start = backedge_count(); | |
| 2369 } | |
| 2370 | |
| 1783 | 2371 InvocationCounter* invocation_counter() { return &_invocation_counter; } |
| 2372 InvocationCounter* backedge_counter() { return &_backedge_counter; } | |
| 2373 | |
| 17780 | 2374 #if INCLUDE_RTM_OPT |
| 2375 int rtm_state() const { | |
| 2376 return _rtm_state; | |
| 2377 } | |
| 2378 void set_rtm_state(RTMState rstate) { | |
| 2379 _rtm_state = (int)rstate; | |
| 2380 } | |
| 2381 void atomic_set_rtm_state(RTMState rstate) { | |
| 2382 Atomic::store((int)rstate, &_rtm_state); | |
| 2383 } | |
| 2384 | |
| 2385 static int rtm_state_offset_in_bytes() { | |
| 2386 return offset_of(MethodData, _rtm_state); | |
| 2387 } | |
| 2388 #endif | |
| 2389 | |
| 1783 | 2390 void set_would_profile(bool p) { _would_profile = p; } |
| 2391 bool would_profile() const { return _would_profile; } | |
| 2392 | |
|
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2393 int highest_comp_level() const { return _highest_comp_level; } |
| 1783 | 2394 void set_highest_comp_level(int level) { _highest_comp_level = level; } |
|
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|
2395 int highest_osr_comp_level() const { return _highest_osr_comp_level; } |
| 1783 | 2396 void set_highest_osr_comp_level(int level) { _highest_osr_comp_level = level; } |
| 2397 | |
| 2398 int num_loops() const { return _num_loops; } | |
| 2399 void set_num_loops(int n) { _num_loops = n; } | |
| 2400 int num_blocks() const { return _num_blocks; } | |
| 2401 void set_num_blocks(int n) { _num_blocks = n; } | |
| 2402 | |
| 0 | 2403 bool is_mature() const; // consult mileage and ProfileMaturityPercentage |
|
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|
2404 static int mileage_of(Method* m); |
| 0 | 2405 |
| 2406 // Support for interprocedural escape analysis, from Thomas Kotzmann. | |
| 2407 enum EscapeFlag { | |
| 2408 estimated = 1 << 0, | |
|
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|
2409 return_local = 1 << 1, |
|
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|
2410 return_allocated = 1 << 2, |
|
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|
2411 allocated_escapes = 1 << 3, |
|
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|
2412 unknown_modified = 1 << 4 |
| 0 | 2413 }; |
| 2414 | |
| 2415 intx eflags() { return _eflags; } | |
| 2416 intx arg_local() { return _arg_local; } | |
| 2417 intx arg_stack() { return _arg_stack; } | |
| 2418 intx arg_returned() { return _arg_returned; } | |
|
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|
2419 uint arg_modified(int a) { ArgInfoData *aid = arg_info(); |
|
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|
2420 assert(aid != NULL, "arg_info must be not null"); |
|
45
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|
2421 assert(a >= 0 && a < aid->number_of_args(), "valid argument number"); |
|
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|
2422 return aid->arg_modified(a); } |
| 0 | 2423 |
| 2424 void set_eflags(intx v) { _eflags = v; } | |
| 2425 void set_arg_local(intx v) { _arg_local = v; } | |
| 2426 void set_arg_stack(intx v) { _arg_stack = v; } | |
| 2427 void set_arg_returned(intx v) { _arg_returned = v; } | |
|
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|
2428 void set_arg_modified(int a, uint v) { ArgInfoData *aid = arg_info(); |
|
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|
2429 assert(aid != NULL, "arg_info must be not null"); |
|
45
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|
2430 assert(a >= 0 && a < aid->number_of_args(), "valid argument number"); |
|
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|
2431 aid->set_arg_modified(a, v); } |
| 0 | 2432 |
| 2433 void clear_escape_info() { _eflags = _arg_local = _arg_stack = _arg_returned = 0; } | |
| 2434 | |
| 2435 // Location and size of data area | |
| 2436 address data_base() const { | |
| 2437 return (address) _data; | |
| 2438 } | |
|
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|
2439 int data_size() const { |
| 0 | 2440 return _data_size; |
| 2441 } | |
| 2442 | |
| 2443 // Accessors | |
|
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|
2444 Method* method() const { return _method; } |
| 0 | 2445 |
| 2446 // Get the data at an arbitrary (sort of) data index. | |
|
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|
2447 ProfileData* data_at(int data_index) const; |
| 0 | 2448 |
| 2449 // Walk through the data in order. | |
|
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|
2450 ProfileData* first_data() const { return data_at(first_di()); } |
|
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|
2451 ProfileData* next_data(ProfileData* current) const; |
|
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|
2452 bool is_valid(ProfileData* current) const { return current != NULL; } |
| 0 | 2453 |
| 2454 // Convert a dp (data pointer) to a di (data index). | |
|
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|
2455 int dp_to_di(address dp) const { |
| 0 | 2456 return dp - ((address)_data); |
| 2457 } | |
| 2458 | |
| 2459 address di_to_dp(int di) { | |
| 2460 return (address)data_layout_at(di); | |
| 2461 } | |
| 2462 | |
| 2463 // bci to di/dp conversion. | |
| 2464 address bci_to_dp(int bci); | |
| 2465 int bci_to_di(int bci) { | |
| 2466 return dp_to_di(bci_to_dp(bci)); | |
| 2467 } | |
| 2468 | |
| 2469 // Get the data at an arbitrary bci, or NULL if there is none. | |
| 2470 ProfileData* bci_to_data(int bci); | |
| 2471 | |
| 2472 // Same, but try to create an extra_data record if one is needed: | |
|
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|
2473 ProfileData* allocate_bci_to_data(int bci, Method* m) { |
|
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|
2474 ProfileData* data = NULL; |
|
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|
2475 // If m not NULL, try to allocate a SpeculativeTrapData entry |
|
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|
2476 if (m == NULL) { |
|
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|
2477 data = bci_to_data(bci); |
|
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|
2478 } |
|
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|
2479 if (data != NULL) { |
|
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|
2480 return data; |
|
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|
2481 } |
|
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|
2482 data = bci_to_extra_data(bci, m, true); |
|
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|
2483 if (data != NULL) { |
|
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|
2484 return data; |
|
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|
2485 } |
|
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|
2486 // If SpeculativeTrapData allocation fails try to allocate a |
|
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|
2487 // regular entry |
|
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|
2488 data = bci_to_data(bci); |
|
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|
2489 if (data != NULL) { |
|
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|
2490 return data; |
|
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|
2491 } |
|
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|
2492 return bci_to_extra_data(bci, NULL, true); |
| 0 | 2493 } |
| 2494 | |
| 2495 // Add a handful of extra data records, for trap tracking. | |
|
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|
2496 DataLayout* extra_data_base() const { return limit_data_position(); } |
|
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6964458: Reimplement class meta-data storage to use native memory
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|
2497 DataLayout* extra_data_limit() const { return (DataLayout*)((address)this + size_in_bytes()); } |
|
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|
2498 int extra_data_size() const { return (address)extra_data_limit() |
| 0 | 2499 - (address)extra_data_base(); } |
|
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|
2500 static DataLayout* next_extra(DataLayout* dp); |
| 0 | 2501 |
| 2502 // Return (uint)-1 for overflow. | |
| 2503 uint trap_count(int reason) const { | |
|
13279
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Doug Simon <doug.simon@oracle.com>
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13216
diff
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|
2504 assert((uint)reason < GRAAL_ONLY(2*) _trap_hist_limit, "oob"); |
| 0 | 2505 return (int)((_trap_hist._array[reason]+1) & _trap_hist_mask) - 1; |
| 2506 } | |
| 2507 // For loops: | |
| 2508 static uint trap_reason_limit() { return _trap_hist_limit; } | |
| 2509 static uint trap_count_limit() { return _trap_hist_mask; } | |
| 2510 uint inc_trap_count(int reason) { | |
| 2511 // Count another trap, anywhere in this method. | |
| 2512 assert(reason >= 0, "must be single trap"); | |
|
13279
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Doug Simon <doug.simon@oracle.com>
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13216
diff
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|
2513 assert((uint)reason < GRAAL_ONLY(2*) _trap_hist_limit, "oob"); |
|
5114
dad1ac9dba7d
finished first implementation of disabling runtime feedback selectively based on deoptimization history
Christian Haeubl <christian.haeubl@oracle.com>
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diff
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|
2514 uint cnt1 = 1 + _trap_hist._array[reason]; |
|
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|
2515 if ((cnt1 & _trap_hist_mask) != 0) { // if no counter overflow... |
|
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|
2516 _trap_hist._array[reason] = cnt1; |
|
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|
2517 return cnt1; |
| 0 | 2518 } else { |
|
5114
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|
2519 return _trap_hist_mask + (++_nof_overflow_traps); |
| 0 | 2520 } |
| 2521 } | |
| 2522 | |
| 2523 uint overflow_trap_count() const { | |
| 2524 return _nof_overflow_traps; | |
| 2525 } | |
| 2526 uint overflow_recompile_count() const { | |
| 2527 return _nof_overflow_recompiles; | |
| 2528 } | |
| 2529 void inc_overflow_recompile_count() { | |
| 2530 _nof_overflow_recompiles += 1; | |
| 2531 } | |
| 2532 uint decompile_count() const { | |
| 2533 return _nof_decompiles; | |
| 2534 } | |
| 2535 void inc_decompile_count() { | |
| 2536 _nof_decompiles += 1; | |
|
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|
2537 if (decompile_count() > (uint)PerMethodRecompilationCutoff) { |
| 7998 | 2538 method()->set_not_compilable(CompLevel_full_optimization, true, "decompile_count > PerMethodRecompilationCutoff"); |
|
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|
2539 } |
| 0 | 2540 } |
| 2541 | |
|
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|
2542 // Return pointer to area dedicated to parameters in MDO |
|
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|
2543 ParametersTypeData* parameters_type_data() const { |
|
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|
2544 return _parameters_type_data_di != -1 ? data_layout_at(_parameters_type_data_di)->data_in()->as_ParametersTypeData() : NULL; |
|
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|
2545 } |
|
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|
2546 |
|
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|
2547 int parameters_type_data_di() const { |
|
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|
2548 assert(_parameters_type_data_di != -1, "no args type data"); |
|
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|
2549 return _parameters_type_data_di; |
|
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|
2550 } |
|
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|
2551 |
| 0 | 2552 // Support for code generation |
| 2553 static ByteSize data_offset() { | |
|
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|
2554 return byte_offset_of(MethodData, _data[0]); |
| 0 | 2555 } |
| 2556 | |
|
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|
2557 static ByteSize trap_history_offset() { |
|
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Doug Simon <doug.simon@oracle.com>
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|
2558 return byte_offset_of(MethodData, _trap_hist._array); |
|
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|
2559 } |
|
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|
2560 |
| 1783 | 2561 static ByteSize invocation_counter_offset() { |
|
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|
2562 return byte_offset_of(MethodData, _invocation_counter); |
| 1783 | 2563 } |
| 2564 static ByteSize backedge_counter_offset() { | |
|
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|
2565 return byte_offset_of(MethodData, _backedge_counter); |
| 1783 | 2566 } |
| 2567 | |
|
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|
2568 static ByteSize parameters_type_data_di_offset() { |
|
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|
2569 return byte_offset_of(MethodData, _parameters_type_data_di); |
|
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2570 } |
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2571 |
|
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2572 // Deallocation support - no pointer fields to deallocate |
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2573 void deallocate_contents(ClassLoaderData* loader_data) {} |
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2574 |
| 0 | 2575 // GC support |
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2576 void set_size(int object_size_in_bytes) { _size = object_size_in_bytes; } |
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2577 |
|
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2578 // Printing |
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2579 #ifndef PRODUCT |
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2580 void print_on (outputStream* st) const; |
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2581 #endif |
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2582 void print_value_on(outputStream* st) const; |
| 0 | 2583 |
| 2584 #ifndef PRODUCT | |
| 2585 // printing support for method data | |
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2586 void print_data_on(outputStream* st) const; |
| 0 | 2587 #endif |
| 2588 | |
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2589 const char* internal_name() const { return "{method data}"; } |
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2590 |
| 0 | 2591 // verification |
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2592 void verify_on(outputStream* st); |
| 0 | 2593 void verify_data_on(outputStream* st); |
|
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2594 |
|
12962
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2595 static bool profile_parameters_for_method(methodHandle m); |
|
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2596 static bool profile_arguments(); |
|
17900
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2597 static bool profile_arguments_jsr292_only(); |
|
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2598 static bool profile_return(); |
|
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2599 static bool profile_parameters(); |
|
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2600 static bool profile_return_jsr292_only(); |
|
17728
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|
2601 |
|
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2602 void clean_method_data(BoolObjectClosure* is_alive); |
| 18041 | 2603 |
|
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2604 void clean_weak_method_links(); |
| 0 | 2605 }; |
| 1972 | 2606 |
| 2607 #endif // SHARE_VM_OOPS_METHODDATAOOP_HPP |