Mercurial > hg > truffle
annotate src/share/vm/oops/methodData.hpp @ 21205:f34ae5c01864
include reexecute, rethrow_exception and return_oop info when disassembling debug scopes
| author | Doug Simon <doug.simon@oracle.com> |
|---|---|
| date | Mon, 04 May 2015 10:39:12 +0200 |
| parents | 7848fc12602b |
| children | a04dfbf81bc4 |
| 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 |
| 20804 | 545 |
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546 #ifdef GRAAL |
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547 // bytecode threw any exception |
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548 , exception_seen_flag = null_seen_flag + 1 |
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549 #endif |
| 0 | 550 }; |
| 551 enum { bit_cell_count = 0 }; // no additional data fields needed. | |
| 552 public: | |
| 553 BitData(DataLayout* layout) : ProfileData(layout) { | |
| 554 } | |
| 555 | |
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556 virtual bool is_BitData() const { return true; } |
| 0 | 557 |
| 558 static int static_cell_count() { | |
| 559 return bit_cell_count; | |
| 560 } | |
| 561 | |
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562 virtual int cell_count() const { |
| 0 | 563 return static_cell_count(); |
| 564 } | |
| 565 | |
| 566 // Accessor | |
| 567 | |
| 568 // The null_seen flag bit is specially known to the interpreter. | |
| 569 // Consulting it allows the compiler to avoid setting up null_check traps. | |
| 570 bool null_seen() { return flag_at(null_seen_flag); } | |
| 571 void set_null_seen() { set_flag_at(null_seen_flag); } | |
| 572 | |
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573 #ifdef GRAAL |
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574 // true if an exception was thrown at the specific BCI |
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575 bool exception_seen() { return flag_at(exception_seen_flag); } |
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576 void set_exception_seen() { set_flag_at(exception_seen_flag); } |
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577 #endif |
| 0 | 578 |
| 579 // Code generation support | |
| 580 static int null_seen_byte_constant() { | |
| 581 return flag_number_to_byte_constant(null_seen_flag); | |
| 582 } | |
| 583 | |
| 584 static ByteSize bit_data_size() { | |
| 585 return cell_offset(bit_cell_count); | |
| 586 } | |
| 587 | |
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588 #ifdef CC_INTERP |
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589 static int bit_data_size_in_bytes() { |
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590 return cell_offset_in_bytes(bit_cell_count); |
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591 } |
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592 |
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593 static void set_null_seen(DataLayout* layout) { |
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594 set_flag_at(layout, null_seen_flag); |
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595 } |
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596 |
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597 static DataLayout* advance(DataLayout* layout) { |
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598 return (DataLayout*) (((address)layout) + (ssize_t)BitData::bit_data_size_in_bytes()); |
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599 } |
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600 #endif // CC_INTERP |
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601 |
| 0 | 602 #ifndef PRODUCT |
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603 void print_data_on(outputStream* st, const char* extra = NULL) const; |
| 0 | 604 #endif |
| 605 }; | |
| 606 | |
| 607 // CounterData | |
| 608 // | |
| 609 // A CounterData corresponds to a simple counter. | |
| 610 class CounterData : public BitData { | |
| 611 protected: | |
| 612 enum { | |
| 613 count_off, | |
| 614 counter_cell_count | |
| 615 }; | |
| 616 public: | |
| 617 CounterData(DataLayout* layout) : BitData(layout) {} | |
| 618 | |
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619 virtual bool is_CounterData() const { return true; } |
| 0 | 620 |
| 621 static int static_cell_count() { | |
| 622 return counter_cell_count; | |
| 623 } | |
| 624 | |
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625 virtual int cell_count() const { |
| 0 | 626 return static_cell_count(); |
| 627 } | |
| 628 | |
| 629 // Direct accessor | |
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630 uint count() const { |
| 0 | 631 return uint_at(count_off); |
| 632 } | |
| 633 | |
| 634 // Code generation support | |
| 635 static ByteSize count_offset() { | |
| 636 return cell_offset(count_off); | |
| 637 } | |
| 638 static ByteSize counter_data_size() { | |
| 639 return cell_offset(counter_cell_count); | |
| 640 } | |
| 641 | |
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642 void set_count(uint count) { |
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643 set_uint_at(count_off, count); |
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644 } |
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645 |
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646 #ifdef CC_INTERP |
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647 static int counter_data_size_in_bytes() { |
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648 return cell_offset_in_bytes(counter_cell_count); |
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649 } |
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650 |
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651 static void increment_count_no_overflow(DataLayout* layout) { |
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652 increment_uint_at_no_overflow(layout, count_off); |
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653 } |
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654 |
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655 // Support counter decrementation at checkcast / subtype check failed. |
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656 static void decrement_count(DataLayout* layout) { |
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657 increment_uint_at_no_overflow(layout, count_off, -1); |
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658 } |
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659 |
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660 static DataLayout* advance(DataLayout* layout) { |
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661 return (DataLayout*) (((address)layout) + (ssize_t)CounterData::counter_data_size_in_bytes()); |
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662 } |
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663 #endif // CC_INTERP |
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664 |
| 0 | 665 #ifndef PRODUCT |
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666 void print_data_on(outputStream* st, const char* extra = NULL) const; |
| 0 | 667 #endif |
| 668 }; | |
| 669 | |
| 670 // JumpData | |
| 671 // | |
| 672 // A JumpData is used to access profiling information for a direct | |
| 673 // branch. It is a counter, used for counting the number of branches, | |
| 674 // plus a data displacement, used for realigning the data pointer to | |
| 675 // the corresponding target bci. | |
| 676 class JumpData : public ProfileData { | |
| 677 protected: | |
| 678 enum { | |
| 679 taken_off_set, | |
| 680 displacement_off_set, | |
| 681 jump_cell_count | |
| 682 }; | |
| 683 | |
| 684 void set_displacement(int displacement) { | |
| 685 set_int_at(displacement_off_set, displacement); | |
| 686 } | |
| 687 | |
| 688 public: | |
| 689 JumpData(DataLayout* layout) : ProfileData(layout) { | |
| 690 assert(layout->tag() == DataLayout::jump_data_tag || | |
| 691 layout->tag() == DataLayout::branch_data_tag, "wrong type"); | |
| 692 } | |
| 693 | |
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694 virtual bool is_JumpData() const { return true; } |
| 0 | 695 |
| 696 static int static_cell_count() { | |
| 697 return jump_cell_count; | |
| 698 } | |
| 699 | |
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700 virtual int cell_count() const { |
| 0 | 701 return static_cell_count(); |
| 702 } | |
| 703 | |
| 704 // Direct accessor | |
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705 uint taken() const { |
| 0 | 706 return uint_at(taken_off_set); |
| 707 } | |
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708 |
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709 void set_taken(uint cnt) { |
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710 set_uint_at(taken_off_set, cnt); |
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711 } |
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712 |
| 0 | 713 // Saturating counter |
| 714 uint inc_taken() { | |
| 715 uint cnt = taken() + 1; | |
| 716 // Did we wrap? Will compiler screw us?? | |
| 717 if (cnt == 0) cnt--; | |
| 718 set_uint_at(taken_off_set, cnt); | |
| 719 return cnt; | |
| 720 } | |
| 721 | |
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722 int displacement() const { |
| 0 | 723 return int_at(displacement_off_set); |
| 724 } | |
| 725 | |
| 726 // Code generation support | |
| 727 static ByteSize taken_offset() { | |
| 728 return cell_offset(taken_off_set); | |
| 729 } | |
| 730 | |
| 731 static ByteSize displacement_offset() { | |
| 732 return cell_offset(displacement_off_set); | |
| 733 } | |
| 734 | |
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735 #ifdef CC_INTERP |
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736 static void increment_taken_count_no_overflow(DataLayout* layout) { |
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737 increment_uint_at_no_overflow(layout, taken_off_set); |
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738 } |
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739 |
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740 static DataLayout* advance_taken(DataLayout* layout) { |
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741 return (DataLayout*) (((address)layout) + (ssize_t)int_at(layout, displacement_off_set)); |
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742 } |
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743 |
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744 static uint taken_count(DataLayout* layout) { |
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745 return (uint) uint_at(layout, taken_off_set); |
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746 } |
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747 #endif // CC_INTERP |
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748 |
| 0 | 749 // Specific initialization. |
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750 void post_initialize(BytecodeStream* stream, MethodData* mdo); |
| 0 | 751 |
| 752 #ifndef PRODUCT | |
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753 void print_data_on(outputStream* st, const char* extra = NULL) const; |
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754 #endif |
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755 }; |
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756 |
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757 // Entries in a ProfileData object to record types: it can either be |
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758 // none (no profile), unknown (conflicting profile data) or a klass if |
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759 // a single one is seen. Whether a null reference was seen is also |
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760 // recorded. No counter is associated with the type and a single type |
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761 // is tracked (unlike VirtualCallData). |
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762 class TypeEntries { |
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763 |
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764 public: |
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765 |
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766 // A single cell is used to record information for a type: |
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767 // - the cell is initialized to 0 |
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768 // - when a type is discovered it is stored in the cell |
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769 // - bit zero of the cell is used to record whether a null reference |
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770 // was encountered or not |
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771 // - bit 1 is set to record a conflict in the type information |
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772 |
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773 enum { |
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774 null_seen = 1, |
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775 type_mask = ~null_seen, |
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776 type_unknown = 2, |
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777 status_bits = null_seen | type_unknown, |
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778 type_klass_mask = ~status_bits |
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779 }; |
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780 |
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781 // what to initialize a cell to |
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782 static intptr_t type_none() { |
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783 return 0; |
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784 } |
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785 |
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786 // null seen = bit 0 set? |
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787 static bool was_null_seen(intptr_t v) { |
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788 return (v & null_seen) != 0; |
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789 } |
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|
790 |
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791 // conflicting type information = bit 1 set? |
|
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792 static bool is_type_unknown(intptr_t v) { |
|
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793 return (v & type_unknown) != 0; |
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|
794 } |
|
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|
795 |
|
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796 // not type information yet = all bits cleared, ignoring bit 0? |
|
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797 static bool is_type_none(intptr_t v) { |
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798 return (v & type_mask) == 0; |
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|
799 } |
|
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|
800 |
|
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801 // recorded type: cell without bit 0 and 1 |
|
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802 static intptr_t klass_part(intptr_t v) { |
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803 intptr_t r = v & type_klass_mask; |
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804 return r; |
|
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|
805 } |
|
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|
806 |
|
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|
807 // type recorded |
|
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|
808 static Klass* valid_klass(intptr_t k) { |
|
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809 if (!is_type_none(k) && |
|
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|
810 !is_type_unknown(k)) { |
| 13080 | 811 Klass* res = (Klass*)klass_part(k); |
| 812 assert(res != NULL, "invalid"); | |
| 813 return res; | |
|
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814 } else { |
|
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|
815 return NULL; |
|
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|
816 } |
|
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|
817 } |
|
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|
818 |
|
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819 static intptr_t with_status(intptr_t k, intptr_t in) { |
|
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820 return k | (in & status_bits); |
|
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|
821 } |
|
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|
822 |
|
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823 static intptr_t with_status(Klass* k, intptr_t in) { |
|
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824 return with_status((intptr_t)k, in); |
|
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|
825 } |
|
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|
826 |
|
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|
827 #ifndef PRODUCT |
|
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828 static void print_klass(outputStream* st, intptr_t k); |
|
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829 #endif |
|
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|
830 |
|
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|
831 // GC support |
|
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832 static bool is_loader_alive(BoolObjectClosure* is_alive_cl, intptr_t p); |
|
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|
833 |
|
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|
834 protected: |
|
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|
835 // ProfileData object these entries are part of |
|
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|
836 ProfileData* _pd; |
|
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837 // offset within the ProfileData object where the entries start |
|
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|
838 const int _base_off; |
|
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|
839 |
|
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|
840 TypeEntries(int base_off) |
|
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841 : _base_off(base_off), _pd(NULL) {} |
|
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|
842 |
|
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|
843 void set_intptr_at(int index, intptr_t value) { |
|
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844 _pd->set_intptr_at(index, value); |
|
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|
845 } |
|
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|
846 |
|
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|
847 intptr_t intptr_at(int index) const { |
|
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848 return _pd->intptr_at(index); |
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|
849 } |
|
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|
850 |
|
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|
851 public: |
|
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|
852 void set_profile_data(ProfileData* pd) { |
|
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|
853 _pd = pd; |
|
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|
854 } |
|
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|
855 }; |
|
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|
856 |
|
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|
857 // Type entries used for arguments passed at a call and parameters on |
|
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|
858 // method entry. 2 cells per entry: one for the type encoded as in |
|
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|
859 // TypeEntries and one initialized with the stack slot where the |
|
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|
860 // profiled object is to be found so that the interpreter can locate |
|
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|
861 // it quickly. |
|
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|
862 class TypeStackSlotEntries : public TypeEntries { |
|
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|
863 |
|
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|
864 private: |
|
d13d7aba8c12
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|
865 enum { |
|
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|
866 stack_slot_entry, |
|
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|
867 type_entry, |
|
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|
868 per_arg_cell_count |
|
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|
869 }; |
|
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|
870 |
|
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|
871 // offset of cell for stack slot for entry i within ProfileData object |
|
12882
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872 int stack_slot_offset(int i) const { |
|
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873 return _base_off + stack_slot_local_offset(i); |
|
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|
874 } |
|
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|
875 |
|
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|
876 protected: |
|
12882
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|
877 const int _number_of_entries; |
|
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|
878 |
|
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|
879 // offset of cell for type for entry i within ProfileData object |
|
12882
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|
880 int type_offset(int i) const { |
|
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|
881 return _base_off + type_local_offset(i); |
|
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|
882 } |
|
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|
883 |
|
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|
884 public: |
|
d13d7aba8c12
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|
885 |
|
12882
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|
886 TypeStackSlotEntries(int base_off, int nb_entries) |
|
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887 : TypeEntries(base_off), _number_of_entries(nb_entries) {} |
|
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|
888 |
|
12962
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|
889 static int compute_cell_count(Symbol* signature, bool include_receiver, int max); |
|
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|
890 |
|
12962
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|
891 void post_initialize(Symbol* signature, bool has_receiver, bool include_receiver); |
|
12875
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|
892 |
|
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|
893 // offset of cell for stack slot for entry i within this block of cells for a TypeStackSlotEntries |
|
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|
894 static int stack_slot_local_offset(int i) { |
|
12882
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|
895 return i * per_arg_cell_count + stack_slot_entry; |
|
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|
896 } |
|
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|
897 |
|
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|
898 // offset of cell for type for entry i within this block of cells for a TypeStackSlotEntries |
|
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|
899 static int type_local_offset(int i) { |
|
12882
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|
900 return i * per_arg_cell_count + type_entry; |
|
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|
901 } |
|
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|
902 |
|
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|
903 // stack slot for entry i |
|
d13d7aba8c12
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|
904 uint stack_slot(int i) const { |
|
12882
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|
905 assert(i >= 0 && i < _number_of_entries, "oob"); |
|
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|
906 return _pd->uint_at(stack_slot_offset(i)); |
|
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|
907 } |
|
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changeset
|
908 |
|
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|
909 // set stack slot for entry i |
|
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|
910 void set_stack_slot(int i, uint num) { |
|
12882
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|
911 assert(i >= 0 && i < _number_of_entries, "oob"); |
|
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|
912 _pd->set_uint_at(stack_slot_offset(i), num); |
|
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|
913 } |
|
d13d7aba8c12
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|
914 |
|
d13d7aba8c12
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|
915 // type for entry i |
|
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|
916 intptr_t type(int i) const { |
|
12882
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changeset
|
917 assert(i >= 0 && i < _number_of_entries, "oob"); |
|
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|
918 return _pd->intptr_at(type_offset(i)); |
|
12875
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|
919 } |
|
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|
920 |
|
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|
921 // set type for entry i |
|
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|
922 void set_type(int i, intptr_t k) { |
|
12882
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923 assert(i >= 0 && i < _number_of_entries, "oob"); |
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924 _pd->set_intptr_at(type_offset(i), k); |
|
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925 } |
|
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|
926 |
|
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|
927 static ByteSize per_arg_size() { |
|
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928 return in_ByteSize(per_arg_cell_count * DataLayout::cell_size); |
|
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929 } |
|
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|
930 |
|
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|
931 static int per_arg_count() { |
|
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|
932 return per_arg_cell_count ; |
|
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|
933 } |
|
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|
934 |
|
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935 // GC support |
|
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936 void clean_weak_klass_links(BoolObjectClosure* is_alive_closure); |
|
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937 |
|
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|
938 #ifndef PRODUCT |
|
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939 void print_data_on(outputStream* st) const; |
|
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940 #endif |
|
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|
941 }; |
|
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942 |
|
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943 // Type entry used for return from a call. A single cell to record the |
|
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944 // type. |
|
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945 class ReturnTypeEntry : public TypeEntries { |
|
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946 |
|
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|
947 private: |
|
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|
948 enum { |
|
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949 cell_count = 1 |
|
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950 }; |
|
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|
951 |
|
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952 public: |
|
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953 ReturnTypeEntry(int base_off) |
|
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954 : TypeEntries(base_off) {} |
|
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|
955 |
|
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|
956 void post_initialize() { |
|
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957 set_type(type_none()); |
|
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|
958 } |
|
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|
959 |
|
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|
960 intptr_t type() const { |
|
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961 return _pd->intptr_at(_base_off); |
|
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962 } |
|
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|
963 |
|
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964 void set_type(intptr_t k) { |
|
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965 _pd->set_intptr_at(_base_off, k); |
|
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966 } |
|
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|
967 |
|
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968 static int static_cell_count() { |
|
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969 return cell_count; |
|
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|
970 } |
|
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|
971 |
|
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|
972 static ByteSize size() { |
|
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973 return in_ByteSize(cell_count * DataLayout::cell_size); |
|
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|
974 } |
|
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|
975 |
|
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|
976 ByteSize type_offset() { |
|
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977 return DataLayout::cell_offset(_base_off); |
|
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978 } |
|
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|
979 |
|
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|
980 // GC support |
|
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|
981 void clean_weak_klass_links(BoolObjectClosure* is_alive_closure); |
|
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|
982 |
|
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|
983 #ifndef PRODUCT |
|
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|
984 void print_data_on(outputStream* st) const; |
|
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|
985 #endif |
|
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|
986 }; |
|
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|
987 |
|
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|
988 // Entries to collect type information at a call: contains arguments |
|
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989 // (TypeStackSlotEntries), a return type (ReturnTypeEntry) and a |
|
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990 // number of cells. Because the number of cells for the return type is |
|
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991 // smaller than the number of cells for the type of an arguments, the |
|
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992 // number of cells is used to tell how many arguments are profiled and |
|
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993 // whether a return value is profiled. See has_arguments() and |
|
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994 // has_return(). |
|
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|
995 class TypeEntriesAtCall { |
|
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|
996 private: |
|
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997 static int stack_slot_local_offset(int i) { |
|
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998 return header_cell_count() + TypeStackSlotEntries::stack_slot_local_offset(i); |
|
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|
999 } |
|
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|
1000 |
|
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1001 static int argument_type_local_offset(int i) { |
|
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1002 return header_cell_count() + TypeStackSlotEntries::type_local_offset(i);; |
|
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1003 } |
|
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|
1004 |
|
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|
1005 public: |
|
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|
1006 |
|
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|
1007 static int header_cell_count() { |
|
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1008 return 1; |
|
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|
1009 } |
|
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|
1010 |
|
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1011 static int cell_count_local_offset() { |
|
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1012 return 0; |
|
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1013 } |
|
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|
1014 |
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1015 static int compute_cell_count(BytecodeStream* stream); |
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1016 |
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1017 static void initialize(DataLayout* dl, int base, int cell_count) { |
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1018 int off = base + cell_count_local_offset(); |
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1019 dl->set_cell_at(off, cell_count - base - header_cell_count()); |
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1020 } |
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1021 |
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1022 static bool arguments_profiling_enabled(); |
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1023 static bool return_profiling_enabled(); |
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1024 |
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1025 // Code generation support |
|
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1026 static ByteSize cell_count_offset() { |
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1027 return in_ByteSize(cell_count_local_offset() * DataLayout::cell_size); |
|
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1028 } |
|
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1029 |
|
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1030 static ByteSize args_data_offset() { |
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1031 return in_ByteSize(header_cell_count() * DataLayout::cell_size); |
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1032 } |
|
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1033 |
|
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1034 static ByteSize stack_slot_offset(int i) { |
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1035 return in_ByteSize(stack_slot_local_offset(i) * DataLayout::cell_size); |
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1036 } |
|
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|
1037 |
|
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1038 static ByteSize argument_type_offset(int i) { |
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1039 return in_ByteSize(argument_type_local_offset(i) * DataLayout::cell_size); |
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1040 } |
|
17900
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|
1041 |
|
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|
1042 static ByteSize return_only_size() { |
|
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1043 return ReturnTypeEntry::size() + in_ByteSize(header_cell_count() * DataLayout::cell_size); |
|
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|
1044 } |
|
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|
1045 |
|
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1046 }; |
|
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|
1047 |
|
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1048 // CallTypeData |
|
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|
1049 // |
|
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1050 // A CallTypeData is used to access profiling information about a non |
|
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1051 // virtual call for which we collect type information about arguments |
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1052 // and return value. |
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1053 class CallTypeData : public CounterData { |
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1054 private: |
|
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1055 // entries for arguments if any |
|
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1056 TypeStackSlotEntries _args; |
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1057 // entry for return type if any |
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1058 ReturnTypeEntry _ret; |
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1059 |
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1060 int cell_count_global_offset() const { |
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1061 return CounterData::static_cell_count() + TypeEntriesAtCall::cell_count_local_offset(); |
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1062 } |
|
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1063 |
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1064 // number of cells not counting the header |
|
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1065 int cell_count_no_header() const { |
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1066 return uint_at(cell_count_global_offset()); |
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1067 } |
|
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1068 |
|
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1069 void check_number_of_arguments(int total) { |
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1070 assert(number_of_arguments() == total, "should be set in DataLayout::initialize"); |
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1071 } |
|
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1072 |
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1073 public: |
|
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1074 CallTypeData(DataLayout* layout) : |
|
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1075 CounterData(layout), |
|
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1076 _args(CounterData::static_cell_count()+TypeEntriesAtCall::header_cell_count(), number_of_arguments()), |
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1077 _ret(cell_count() - ReturnTypeEntry::static_cell_count()) |
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1078 { |
|
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1079 assert(layout->tag() == DataLayout::call_type_data_tag, "wrong type"); |
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1080 // Some compilers (VC++) don't want this passed in member initialization list |
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1081 _args.set_profile_data(this); |
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1082 _ret.set_profile_data(this); |
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1083 } |
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1084 |
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1085 const TypeStackSlotEntries* args() const { |
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1086 assert(has_arguments(), "no profiling of arguments"); |
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1087 return &_args; |
|
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1088 } |
|
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1089 |
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1090 const ReturnTypeEntry* ret() const { |
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1091 assert(has_return(), "no profiling of return value"); |
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1092 return &_ret; |
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1093 } |
|
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1094 |
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1095 virtual bool is_CallTypeData() const { return true; } |
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1096 |
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1097 static int static_cell_count() { |
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1098 return -1; |
|
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1099 } |
|
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1100 |
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1101 static int compute_cell_count(BytecodeStream* stream) { |
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1102 return CounterData::static_cell_count() + TypeEntriesAtCall::compute_cell_count(stream); |
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1103 } |
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1104 |
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1105 static void initialize(DataLayout* dl, int cell_count) { |
|
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1106 TypeEntriesAtCall::initialize(dl, CounterData::static_cell_count(), cell_count); |
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1107 } |
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1108 |
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1109 virtual void post_initialize(BytecodeStream* stream, MethodData* mdo); |
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1110 |
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1111 virtual int cell_count() const { |
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1112 return CounterData::static_cell_count() + |
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1113 TypeEntriesAtCall::header_cell_count() + |
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1114 int_at_unchecked(cell_count_global_offset()); |
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1115 } |
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1116 |
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1117 int number_of_arguments() const { |
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1118 return cell_count_no_header() / TypeStackSlotEntries::per_arg_count(); |
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1119 } |
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1120 |
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1121 void set_argument_type(int i, Klass* k) { |
|
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1122 assert(has_arguments(), "no arguments!"); |
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1123 intptr_t current = _args.type(i); |
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1124 _args.set_type(i, TypeEntries::with_status(k, current)); |
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1125 } |
|
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1126 |
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1127 void set_return_type(Klass* k) { |
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1128 assert(has_return(), "no return!"); |
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1129 intptr_t current = _ret.type(); |
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1130 _ret.set_type(TypeEntries::with_status(k, current)); |
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1131 } |
|
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1132 |
|
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1133 // An entry for a return value takes less space than an entry for an |
|
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1134 // argument so if the number of cells exceeds the number of cells |
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1135 // needed for an argument, this object contains type information for |
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1136 // at least one argument. |
|
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1137 bool has_arguments() const { |
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1138 bool res = cell_count_no_header() >= TypeStackSlotEntries::per_arg_count(); |
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1139 assert (!res || TypeEntriesAtCall::arguments_profiling_enabled(), "no profiling of arguments"); |
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1140 return res; |
|
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1141 } |
|
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1142 |
|
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1143 // An entry for a return value takes less space than an entry for an |
|
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1144 // argument, so if the remainder of the number of cells divided by |
|
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1145 // the number of cells for an argument is not null, a return value |
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1146 // is profiled in this object. |
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1147 bool has_return() const { |
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1148 bool res = (cell_count_no_header() % TypeStackSlotEntries::per_arg_count()) != 0; |
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1149 assert (!res || TypeEntriesAtCall::return_profiling_enabled(), "no profiling of return values"); |
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1150 return res; |
|
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1151 } |
|
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1152 |
|
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1153 // Code generation support |
|
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1154 static ByteSize args_data_offset() { |
|
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1155 return cell_offset(CounterData::static_cell_count()) + TypeEntriesAtCall::args_data_offset(); |
|
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1156 } |
|
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1157 |
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1158 // GC support |
|
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1159 virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure) { |
|
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1160 if (has_arguments()) { |
|
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1161 _args.clean_weak_klass_links(is_alive_closure); |
|
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1162 } |
|
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1163 if (has_return()) { |
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1164 _ret.clean_weak_klass_links(is_alive_closure); |
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1165 } |
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1166 } |
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1167 |
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1168 #ifndef PRODUCT |
|
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1169 virtual void print_data_on(outputStream* st, const char* extra = NULL) const; |
| 0 | 1170 #endif |
| 1171 }; | |
| 1172 | |
| 1173 // ReceiverTypeData | |
| 1174 // | |
| 1175 // A ReceiverTypeData is used to access profiling information about a | |
| 1176 // dynamic type check. It consists of a counter which counts the total times | |
|
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1177 // that the check is reached, and a series of (Klass*, count) pairs |
| 0 | 1178 // which are used to store a type profile for the receiver of the check. |
| 1179 class ReceiverTypeData : public CounterData { | |
| 1180 protected: | |
| 1181 enum { | |
|
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1182 #ifdef GRAAL |
|
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1183 // Description of the different counters |
|
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1184 // ReceiverTypeData for instanceof/checkcast/aastore: |
|
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1185 // C1/C2: count is incremented on type overflow and decremented for failed type checks |
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1186 // Graal: count decremented for failed type checks and nonprofiled_count is incremented on type overflow |
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1187 // TODO (chaeubl): in fact, Graal should also increment the count for failed type checks to mimic the C1/C2 behavior |
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1188 // VirtualCallData for invokevirtual/invokeinterface: |
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1189 // C1/C2: count is incremented on type overflow |
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1190 // Graal: count is incremented on type overflow, nonprofiled_count is incremented on method overflow |
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1191 |
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1192 // Graal is interested in knowing the percentage of type checks involving a type not explicitly in the profile |
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1193 nonprofiled_count_off_set = counter_cell_count, |
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1194 receiver0_offset, |
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1195 #else |
| 0 | 1196 receiver0_offset = counter_cell_count, |
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1197 #endif |
| 0 | 1198 count0_offset, |
| 1199 receiver_type_row_cell_count = (count0_offset + 1) - receiver0_offset | |
| 1200 }; | |
| 1201 | |
| 1202 public: | |
| 1203 ReceiverTypeData(DataLayout* layout) : CounterData(layout) { | |
| 1204 assert(layout->tag() == DataLayout::receiver_type_data_tag || | |
|
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1205 layout->tag() == DataLayout::virtual_call_data_tag || |
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1206 layout->tag() == DataLayout::virtual_call_type_data_tag, "wrong type"); |
| 0 | 1207 } |
| 1208 | |
|
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1209 virtual bool is_ReceiverTypeData() const { return true; } |
| 0 | 1210 |
| 1211 static int static_cell_count() { | |
|
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1212 return counter_cell_count + (uint) TypeProfileWidth * receiver_type_row_cell_count GRAAL_ONLY(+ 1); |
| 0 | 1213 } |
| 1214 | |
|
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1215 virtual int cell_count() const { |
| 0 | 1216 return static_cell_count(); |
| 1217 } | |
| 1218 | |
| 1219 // Direct accessors | |
| 1220 static uint row_limit() { | |
| 1221 return TypeProfileWidth; | |
| 1222 } | |
| 1223 static int receiver_cell_index(uint row) { | |
| 1224 return receiver0_offset + row * receiver_type_row_cell_count; | |
| 1225 } | |
| 1226 static int receiver_count_cell_index(uint row) { | |
| 1227 return count0_offset + row * receiver_type_row_cell_count; | |
| 1228 } | |
| 1229 | |
|
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1230 Klass* receiver(uint row) const { |
| 0 | 1231 assert(row < row_limit(), "oob"); |
| 1232 | |
|
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1233 Klass* recv = (Klass*)intptr_at(receiver_cell_index(row)); |
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1234 assert(recv == NULL || recv->is_klass(), "wrong type"); |
| 0 | 1235 return recv; |
| 1236 } | |
| 1237 | |
|
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1238 void set_receiver(uint row, Klass* k) { |
| 941 | 1239 assert((uint)row < row_limit(), "oob"); |
|
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1240 set_intptr_at(receiver_cell_index(row), (uintptr_t)k); |
| 941 | 1241 } |
| 1242 | |
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1243 uint receiver_count(uint row) const { |
| 0 | 1244 assert(row < row_limit(), "oob"); |
| 1245 return uint_at(receiver_count_cell_index(row)); | |
| 1246 } | |
| 1247 | |
| 941 | 1248 void set_receiver_count(uint row, uint count) { |
| 1249 assert(row < row_limit(), "oob"); | |
| 1250 set_uint_at(receiver_count_cell_index(row), count); | |
| 1251 } | |
| 1252 | |
| 1253 void clear_row(uint row) { | |
| 1254 assert(row < row_limit(), "oob"); | |
|
1251
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1255 // Clear total count - indicator of polymorphic call site. |
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1256 // The site may look like as monomorphic after that but |
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1257 // it allow to have more accurate profiling information because |
|
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1258 // there was execution phase change since klasses were unloaded. |
|
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1259 // If the site is still polymorphic then MDO will be updated |
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1260 // to reflect it. But it could be the case that the site becomes |
|
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1261 // only bimorphic. Then keeping total count not 0 will be wrong. |
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1262 // Even if we use monomorphic (when it is not) for compilation |
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1263 // we will only have trap, deoptimization and recompile again |
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1264 // with updated MDO after executing method in Interpreter. |
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1265 // An additional receiver will be recorded in the cleaned row |
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1266 // during next call execution. |
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1267 // |
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1268 // Note: our profiling logic works with empty rows in any slot. |
|
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1269 // We do sorting a profiling info (ciCallProfile) for compilation. |
|
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1270 // |
|
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|
1271 set_count(0); |
| 941 | 1272 set_receiver(row, NULL); |
| 1273 set_receiver_count(row, 0); | |
|
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1274 #ifdef GRAAL |
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1275 if (!this->is_VirtualCallData()) { |
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1276 // if this is a ReceiverTypeData for Graal, the nonprofiled_count |
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1277 // must also be reset (see "Description of the different counters" above) |
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1278 set_nonprofiled_count(0); |
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1279 } |
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1280 #endif |
| 941 | 1281 } |
| 1282 | |
| 0 | 1283 // Code generation support |
| 1284 static ByteSize receiver_offset(uint row) { | |
| 1285 return cell_offset(receiver_cell_index(row)); | |
| 1286 } | |
| 1287 static ByteSize receiver_count_offset(uint row) { | |
| 1288 return cell_offset(receiver_count_cell_index(row)); | |
| 1289 } | |
|
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1290 #ifdef GRAAL |
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1291 static ByteSize nonprofiled_receiver_count_offset() { |
|
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1292 return cell_offset(nonprofiled_count_off_set); |
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1293 } |
|
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1294 uint nonprofiled_count() const { |
|
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1295 return uint_at(nonprofiled_count_off_set); |
|
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1296 } |
|
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1297 void set_nonprofiled_count(uint count) { |
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1298 set_uint_at(nonprofiled_count_off_set, count); |
|
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1299 } |
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1300 #endif |
| 0 | 1301 static ByteSize receiver_type_data_size() { |
| 1302 return cell_offset(static_cell_count()); | |
| 1303 } | |
| 1304 | |
| 1305 // GC support | |
|
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1306 virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure); |
| 0 | 1307 |
|
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1308 #ifdef CC_INTERP |
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1309 static int receiver_type_data_size_in_bytes() { |
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1310 return cell_offset_in_bytes(static_cell_count()); |
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1311 } |
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1312 |
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1313 static Klass *receiver_unchecked(DataLayout* layout, uint row) { |
|
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1314 Klass* recv = (Klass*)layout->cell_at(receiver_cell_index(row)); |
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1315 return recv; |
|
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1316 } |
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1317 |
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1318 static void increment_receiver_count_no_overflow(DataLayout* layout, Klass *rcvr) { |
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1319 const int num_rows = row_limit(); |
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1320 // Receiver already exists? |
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1321 for (int row = 0; row < num_rows; row++) { |
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1322 if (receiver_unchecked(layout, row) == rcvr) { |
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1323 increment_uint_at_no_overflow(layout, receiver_count_cell_index(row)); |
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1324 return; |
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1325 } |
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1326 } |
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1327 // New receiver, find a free slot. |
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1328 for (int row = 0; row < num_rows; row++) { |
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1329 if (receiver_unchecked(layout, row) == NULL) { |
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1330 set_intptr_at(layout, receiver_cell_index(row), (intptr_t)rcvr); |
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1331 increment_uint_at_no_overflow(layout, receiver_count_cell_index(row)); |
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1332 return; |
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1333 } |
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1334 } |
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1335 // Receiver did not match any saved receiver and there is no empty row for it. |
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1336 // Increment total counter to indicate polymorphic case. |
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1337 increment_count_no_overflow(layout); |
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1338 } |
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1339 |
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1340 static DataLayout* advance(DataLayout* layout) { |
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1341 return (DataLayout*) (((address)layout) + (ssize_t)ReceiverTypeData::receiver_type_data_size_in_bytes()); |
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1342 } |
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1343 #endif // CC_INTERP |
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1344 |
| 0 | 1345 #ifndef PRODUCT |
|
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|
1346 void print_receiver_data_on(outputStream* st) const; |
|
17728
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8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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13080
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|
1347 void print_data_on(outputStream* st, const char* extra = NULL) const; |
| 0 | 1348 #endif |
| 1349 }; | |
| 1350 | |
| 1351 // VirtualCallData | |
| 1352 // | |
| 1353 // A VirtualCallData is used to access profiling information about a | |
| 1354 // virtual call. For now, it has nothing more than a ReceiverTypeData. | |
| 1355 class VirtualCallData : public ReceiverTypeData { | |
| 1356 public: | |
| 1357 VirtualCallData(DataLayout* layout) : ReceiverTypeData(layout) { | |
|
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|
1358 assert(layout->tag() == DataLayout::virtual_call_data_tag || |
|
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8023657: New type profiling points: arguments to call
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|
1359 layout->tag() == DataLayout::virtual_call_type_data_tag, "wrong type"); |
| 0 | 1360 } |
| 1361 | |
|
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|
1362 virtual bool is_VirtualCallData() const { return true; } |
| 0 | 1363 |
| 1364 static int static_cell_count() { | |
| 1365 // At this point we could add more profile state, e.g., for arguments. | |
| 1366 // 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>
parents:
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|
1367 return ReceiverTypeData::static_cell_count() GRAAL_ONLY(+ (uint) MethodProfileWidth * receiver_type_row_cell_count); |
| 0 | 1368 } |
| 1369 | |
|
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|
1370 virtual int cell_count() const { |
| 0 | 1371 return static_cell_count(); |
| 1372 } | |
| 1373 | |
| 1374 // Direct accessors | |
| 1375 static ByteSize virtual_call_data_size() { | |
| 1376 return cell_offset(static_cell_count()); | |
| 1377 } | |
| 1378 | |
|
14420
abe03600372a
8024468: PPC64 (part 201): cppInterpreter: implement bytecode profiling
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|
1379 #ifdef CC_INTERP |
|
abe03600372a
8024468: PPC64 (part 201): cppInterpreter: implement bytecode profiling
goetz
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|
1380 static int virtual_call_data_size_in_bytes() { |
|
abe03600372a
8024468: PPC64 (part 201): cppInterpreter: implement bytecode profiling
goetz
parents:
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|
1381 return cell_offset_in_bytes(static_cell_count()); |
|
abe03600372a
8024468: PPC64 (part 201): cppInterpreter: implement bytecode profiling
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parents:
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diff
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|
1382 } |
|
abe03600372a
8024468: PPC64 (part 201): cppInterpreter: implement bytecode profiling
goetz
parents:
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diff
changeset
|
1383 |
|
abe03600372a
8024468: PPC64 (part 201): cppInterpreter: implement bytecode profiling
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|
1384 static DataLayout* advance(DataLayout* layout) { |
|
abe03600372a
8024468: PPC64 (part 201): cppInterpreter: implement bytecode profiling
goetz
parents:
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|
1385 return (DataLayout*) (((address)layout) + (ssize_t)VirtualCallData::virtual_call_data_size_in_bytes()); |
|
abe03600372a
8024468: PPC64 (part 201): cppInterpreter: implement bytecode profiling
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|
1386 } |
|
abe03600372a
8024468: PPC64 (part 201): cppInterpreter: implement bytecode profiling
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|
1387 #endif // CC_INTERP |
|
abe03600372a
8024468: PPC64 (part 201): cppInterpreter: implement bytecode profiling
goetz
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|
1388 |
|
9760
c76b43ed5089
Added infrastructure for recording invoked methods in the profiling information.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9088
diff
changeset
|
1389 #ifdef GRAAL |
|
c76b43ed5089
Added infrastructure for recording invoked methods in the profiling information.
Christian Haeubl <haeubl@ssw.jku.at>
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diff
changeset
|
1390 static ByteSize method_offset(uint row) { |
|
c76b43ed5089
Added infrastructure for recording invoked methods in the profiling information.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
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diff
changeset
|
1391 return cell_offset(method_cell_index(row)); |
|
c76b43ed5089
Added infrastructure for recording invoked methods in the profiling information.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
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diff
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|
1392 } |
|
c76b43ed5089
Added infrastructure for recording invoked methods in the profiling information.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9088
diff
changeset
|
1393 static ByteSize method_count_offset(uint row) { |
|
c76b43ed5089
Added infrastructure for recording invoked methods in the profiling information.
Christian Haeubl <haeubl@ssw.jku.at>
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changeset
|
1394 return cell_offset(method_count_cell_index(row)); |
|
c76b43ed5089
Added infrastructure for recording invoked methods in the profiling information.
Christian Haeubl <haeubl@ssw.jku.at>
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diff
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|
1395 } |
|
c76b43ed5089
Added infrastructure for recording invoked methods in the profiling information.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9088
diff
changeset
|
1396 static int method_cell_index(uint row) { |
|
c76b43ed5089
Added infrastructure for recording invoked methods in the profiling information.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
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diff
changeset
|
1397 return receiver0_offset + (row + TypeProfileWidth) * receiver_type_row_cell_count; |
|
c76b43ed5089
Added infrastructure for recording invoked methods in the profiling information.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9088
diff
changeset
|
1398 } |
|
c76b43ed5089
Added infrastructure for recording invoked methods in the profiling information.
Christian Haeubl <haeubl@ssw.jku.at>
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diff
changeset
|
1399 static int method_count_cell_index(uint row) { |
|
c76b43ed5089
Added infrastructure for recording invoked methods in the profiling information.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9088
diff
changeset
|
1400 return count0_offset + (row + TypeProfileWidth) * receiver_type_row_cell_count; |
|
c76b43ed5089
Added infrastructure for recording invoked methods in the profiling information.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9088
diff
changeset
|
1401 } |
|
9762
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1402 static uint method_row_limit() { |
|
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1403 return MethodProfileWidth; |
|
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1404 } |
|
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1405 |
|
13108
d84fa69a9874
added support for printing method profiles for virtual calls
Doug Simon <doug.simon@oracle.com>
parents:
13086
diff
changeset
|
1406 Method* method(uint row) const { |
|
9762
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1407 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
|
1408 |
|
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1409 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>
parents:
9760
diff
changeset
|
1410 assert(method == NULL || method->is_method(), "must be"); |
|
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1411 return method; |
|
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1412 } |
|
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1413 |
|
13108
d84fa69a9874
added support for printing method profiles for virtual calls
Doug Simon <doug.simon@oracle.com>
parents:
13086
diff
changeset
|
1414 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
|
1415 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
|
1416 return uint_at(method_count_cell_index(row)); |
|
d84fa69a9874
added support for printing method profiles for virtual calls
Doug Simon <doug.simon@oracle.com>
parents:
13086
diff
changeset
|
1417 } |
|
d84fa69a9874
added support for printing method profiles for virtual calls
Doug Simon <doug.simon@oracle.com>
parents:
13086
diff
changeset
|
1418 |
|
9762
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1419 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
|
1420 assert((uint)row < method_row_limit(), "oob"); |
|
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1421 set_intptr_at(method_cell_index(row), (uintptr_t)m); |
|
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1422 } |
|
9760
c76b43ed5089
Added infrastructure for recording invoked methods in the profiling information.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9088
diff
changeset
|
1423 |
|
9762
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1424 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
|
1425 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
|
1426 set_uint_at(method_count_cell_index(row), count); |
| 0 | 1427 } |
| 1428 | |
|
9762
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1429 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
|
1430 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
|
1431 // Clear total count - indicator of polymorphic call site (see comment for clear_row() in ReceiverTypeData). |
|
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1432 set_nonprofiled_count(0); |
|
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1433 set_method(row, NULL); |
|
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1434 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
|
1435 } |
|
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1436 |
|
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1437 // GC support |
|
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1438 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
|
1439 |
|
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14543
diff
changeset
|
1440 // Redefinition support |
|
8762b6b8fbb6
fix scanning of method data for redefined methods
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14543
diff
changeset
|
1441 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
|
1442 #endif |
|
57e5211846f9
Added class unloading support to the method profiling infrastructure.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9760
diff
changeset
|
1443 |
| 0 | 1444 #ifndef PRODUCT |
|
13108
d84fa69a9874
added support for printing method profiles for virtual calls
Doug Simon <doug.simon@oracle.com>
parents:
13086
diff
changeset
|
1445 #ifdef GRAAL |
|
d84fa69a9874
added support for printing method profiles for virtual calls
Doug Simon <doug.simon@oracle.com>
parents:
13086
diff
changeset
|
1446 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
|
1447 #endif |
|
17728
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
13080
diff
changeset
|
1448 void print_data_on(outputStream* st, const char* extra = NULL) const; |
|
12875
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1449 #endif |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1450 }; |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1451 |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1452 // VirtualCallTypeData |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1453 // |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
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12316
diff
changeset
|
1454 // A VirtualCallTypeData is used to access profiling information about |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
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|
1455 // a virtual call for which we collect type information about |
|
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1456 // arguments and return value. |
|
12875
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8023657: New type profiling points: arguments to call
roland
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12316
diff
changeset
|
1457 class VirtualCallTypeData : public VirtualCallData { |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1458 private: |
|
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1459 // entries for arguments if any |
|
12875
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1460 TypeStackSlotEntries _args; |
|
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1461 // entry for return type if any |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1462 ReturnTypeEntry _ret; |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1463 |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1464 int cell_count_global_offset() const { |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1465 return VirtualCallData::static_cell_count() + TypeEntriesAtCall::cell_count_local_offset(); |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1466 } |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1467 |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1468 // number of cells not counting the header |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1469 int cell_count_no_header() const { |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1470 return uint_at(cell_count_global_offset()); |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1471 } |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1472 |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1473 void check_number_of_arguments(int total) { |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1474 assert(number_of_arguments() == total, "should be set in DataLayout::initialize"); |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1475 } |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1476 |
|
12875
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1477 public: |
|
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1478 VirtualCallTypeData(DataLayout* layout) : |
|
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1479 VirtualCallData(layout), |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1480 _args(VirtualCallData::static_cell_count()+TypeEntriesAtCall::header_cell_count(), number_of_arguments()), |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1481 _ret(cell_count() - ReturnTypeEntry::static_cell_count()) |
|
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1482 { |
|
12875
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8023657: New type profiling points: arguments to call
roland
parents:
12316
diff
changeset
|
1483 assert(layout->tag() == DataLayout::virtual_call_type_data_tag, "wrong type"); |
|
d13d7aba8c12
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1484 // Some compilers (VC++) don't want this passed in member initialization list |
|
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1485 _args.set_profile_data(this); |
|
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1486 _ret.set_profile_data(this); |
|
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1487 } |
|
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1488 |
|
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1489 const TypeStackSlotEntries* args() const { |
|
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1490 assert(has_arguments(), "no profiling of arguments"); |
|
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1491 return &_args; |
|
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1492 } |
|
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1493 |
|
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1494 const ReturnTypeEntry* ret() const { |
|
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1495 assert(has_return(), "no profiling of return value"); |
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1496 return &_ret; |
|
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1497 } |
|
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1498 |
|
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1499 virtual bool is_VirtualCallTypeData() const { return true; } |
|
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1500 |
|
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1501 static int static_cell_count() { |
|
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1502 return -1; |
|
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1503 } |
|
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1504 |
|
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1505 static int compute_cell_count(BytecodeStream* stream) { |
|
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1506 return VirtualCallData::static_cell_count() + TypeEntriesAtCall::compute_cell_count(stream); |
|
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1507 } |
|
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1508 |
|
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1509 static void initialize(DataLayout* dl, int cell_count) { |
|
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1510 TypeEntriesAtCall::initialize(dl, VirtualCallData::static_cell_count(), cell_count); |
|
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1511 } |
|
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1512 |
|
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1513 virtual void post_initialize(BytecodeStream* stream, MethodData* mdo); |
|
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1514 |
|
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1515 virtual int cell_count() const { |
|
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1516 return VirtualCallData::static_cell_count() + |
|
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1517 TypeEntriesAtCall::header_cell_count() + |
|
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1518 int_at_unchecked(cell_count_global_offset()); |
|
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1519 } |
|
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1520 |
|
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1521 int number_of_arguments() const { |
|
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1522 return cell_count_no_header() / TypeStackSlotEntries::per_arg_count(); |
|
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1523 } |
|
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1524 |
|
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1525 void set_argument_type(int i, Klass* k) { |
|
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1526 assert(has_arguments(), "no arguments!"); |
|
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1527 intptr_t current = _args.type(i); |
|
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1528 _args.set_type(i, TypeEntries::with_status(k, current)); |
|
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1529 } |
|
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1530 |
|
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1531 void set_return_type(Klass* k) { |
|
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1532 assert(has_return(), "no return!"); |
|
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1533 intptr_t current = _ret.type(); |
|
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1534 _ret.set_type(TypeEntries::with_status(k, current)); |
|
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1535 } |
|
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1536 |
|
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1537 // An entry for a return value takes less space than an entry for an |
|
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1538 // argument, so if the remainder of the number of cells divided by |
|
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1539 // the number of cells for an argument is not null, a return value |
|
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1540 // is profiled in this object. |
|
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1541 bool has_return() const { |
|
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1542 bool res = (cell_count_no_header() % TypeStackSlotEntries::per_arg_count()) != 0; |
|
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1543 assert (!res || TypeEntriesAtCall::return_profiling_enabled(), "no profiling of return values"); |
|
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1544 return res; |
|
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|
1545 } |
|
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|
1546 |
|
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1547 // An entry for a return value takes less space than an entry for an |
|
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1548 // argument so if the number of cells exceeds the number of cells |
|
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1549 // needed for an argument, this object contains type information for |
|
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1550 // at least one argument. |
|
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1551 bool has_arguments() const { |
|
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1552 bool res = cell_count_no_header() >= TypeStackSlotEntries::per_arg_count(); |
|
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1553 assert (!res || TypeEntriesAtCall::arguments_profiling_enabled(), "no profiling of arguments"); |
|
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1554 return res; |
|
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|
1555 } |
|
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1556 |
|
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1557 // Code generation support |
|
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1558 static ByteSize args_data_offset() { |
|
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1559 return cell_offset(VirtualCallData::static_cell_count()) + TypeEntriesAtCall::args_data_offset(); |
|
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1560 } |
|
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1561 |
|
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1562 // GC support |
|
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1563 virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure) { |
|
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1564 ReceiverTypeData::clean_weak_klass_links(is_alive_closure); |
|
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1565 if (has_arguments()) { |
|
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1566 _args.clean_weak_klass_links(is_alive_closure); |
|
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1567 } |
|
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1568 if (has_return()) { |
|
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1569 _ret.clean_weak_klass_links(is_alive_closure); |
|
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1570 } |
|
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1571 } |
|
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1572 |
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1573 #ifndef PRODUCT |
|
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1574 virtual void print_data_on(outputStream* st, const char* extra = NULL) const; |
| 0 | 1575 #endif |
| 1576 }; | |
| 1577 | |
| 1578 // RetData | |
| 1579 // | |
| 1580 // A RetData is used to access profiling information for a ret bytecode. | |
| 1581 // It is composed of a count of the number of times that the ret has | |
| 1582 // been executed, followed by a series of triples of the form | |
| 1583 // (bci, count, di) which count the number of times that some bci was the | |
| 1584 // target of the ret and cache a corresponding data displacement. | |
| 1585 class RetData : public CounterData { | |
| 1586 protected: | |
| 1587 enum { | |
| 1588 bci0_offset = counter_cell_count, | |
| 1589 count0_offset, | |
| 1590 displacement0_offset, | |
| 1591 ret_row_cell_count = (displacement0_offset + 1) - bci0_offset | |
| 1592 }; | |
| 1593 | |
| 1594 void set_bci(uint row, int bci) { | |
| 1595 assert((uint)row < row_limit(), "oob"); | |
| 1596 set_int_at(bci0_offset + row * ret_row_cell_count, bci); | |
| 1597 } | |
| 1598 void release_set_bci(uint row, int bci) { | |
| 1599 assert((uint)row < row_limit(), "oob"); | |
| 1600 // 'release' when setting the bci acts as a valid flag for other | |
| 1601 // threads wrt bci_count and bci_displacement. | |
| 1602 release_set_int_at(bci0_offset + row * ret_row_cell_count, bci); | |
| 1603 } | |
| 1604 void set_bci_count(uint row, uint count) { | |
| 1605 assert((uint)row < row_limit(), "oob"); | |
| 1606 set_uint_at(count0_offset + row * ret_row_cell_count, count); | |
| 1607 } | |
| 1608 void set_bci_displacement(uint row, int disp) { | |
| 1609 set_int_at(displacement0_offset + row * ret_row_cell_count, disp); | |
| 1610 } | |
| 1611 | |
| 1612 public: | |
| 1613 RetData(DataLayout* layout) : CounterData(layout) { | |
| 1614 assert(layout->tag() == DataLayout::ret_data_tag, "wrong type"); | |
| 1615 } | |
| 1616 | |
|
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1617 virtual bool is_RetData() const { return true; } |
| 0 | 1618 |
| 1619 enum { | |
| 1620 no_bci = -1 // value of bci when bci1/2 are not in use. | |
| 1621 }; | |
| 1622 | |
| 1623 static int static_cell_count() { | |
| 1624 return counter_cell_count + (uint) BciProfileWidth * ret_row_cell_count; | |
| 1625 } | |
| 1626 | |
|
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1627 virtual int cell_count() const { |
| 0 | 1628 return static_cell_count(); |
| 1629 } | |
| 1630 | |
| 1631 static uint row_limit() { | |
| 1632 return BciProfileWidth; | |
| 1633 } | |
| 1634 static int bci_cell_index(uint row) { | |
| 1635 return bci0_offset + row * ret_row_cell_count; | |
| 1636 } | |
| 1637 static int bci_count_cell_index(uint row) { | |
| 1638 return count0_offset + row * ret_row_cell_count; | |
| 1639 } | |
| 1640 static int bci_displacement_cell_index(uint row) { | |
| 1641 return displacement0_offset + row * ret_row_cell_count; | |
| 1642 } | |
| 1643 | |
| 1644 // Direct accessors | |
|
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1645 int bci(uint row) const { |
| 0 | 1646 return int_at(bci_cell_index(row)); |
| 1647 } | |
|
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1648 uint bci_count(uint row) const { |
| 0 | 1649 return uint_at(bci_count_cell_index(row)); |
| 1650 } | |
|
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1651 int bci_displacement(uint row) const { |
| 0 | 1652 return int_at(bci_displacement_cell_index(row)); |
| 1653 } | |
| 1654 | |
| 1655 // Interpreter Runtime support | |
|
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1656 address fixup_ret(int return_bci, MethodData* mdo); |
| 0 | 1657 |
| 1658 // Code generation support | |
| 1659 static ByteSize bci_offset(uint row) { | |
| 1660 return cell_offset(bci_cell_index(row)); | |
| 1661 } | |
| 1662 static ByteSize bci_count_offset(uint row) { | |
| 1663 return cell_offset(bci_count_cell_index(row)); | |
| 1664 } | |
| 1665 static ByteSize bci_displacement_offset(uint row) { | |
| 1666 return cell_offset(bci_displacement_cell_index(row)); | |
| 1667 } | |
| 1668 | |
|
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1669 #ifdef CC_INTERP |
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1670 static DataLayout* advance(MethodData *md, int bci); |
|
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1671 #endif // CC_INTERP |
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1672 |
| 0 | 1673 // Specific initialization. |
|
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1674 void post_initialize(BytecodeStream* stream, MethodData* mdo); |
| 0 | 1675 |
| 1676 #ifndef PRODUCT | |
|
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1677 void print_data_on(outputStream* st, const char* extra = NULL) const; |
| 0 | 1678 #endif |
| 1679 }; | |
| 1680 | |
| 1681 // BranchData | |
| 1682 // | |
| 1683 // A BranchData is used to access profiling data for a two-way branch. | |
| 1684 // It consists of taken and not_taken counts as well as a data displacement | |
| 1685 // for the taken case. | |
| 1686 class BranchData : public JumpData { | |
| 1687 protected: | |
| 1688 enum { | |
| 1689 not_taken_off_set = jump_cell_count, | |
| 1690 branch_cell_count | |
| 1691 }; | |
| 1692 | |
| 1693 void set_displacement(int displacement) { | |
| 1694 set_int_at(displacement_off_set, displacement); | |
| 1695 } | |
| 1696 | |
| 1697 public: | |
| 1698 BranchData(DataLayout* layout) : JumpData(layout) { | |
| 1699 assert(layout->tag() == DataLayout::branch_data_tag, "wrong type"); | |
| 1700 } | |
| 1701 | |
|
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1702 virtual bool is_BranchData() const { return true; } |
| 0 | 1703 |
| 1704 static int static_cell_count() { | |
| 1705 return branch_cell_count; | |
| 1706 } | |
| 1707 | |
|
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1708 virtual int cell_count() const { |
| 0 | 1709 return static_cell_count(); |
| 1710 } | |
| 1711 | |
| 1712 // Direct accessor | |
|
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1713 uint not_taken() const { |
| 0 | 1714 return uint_at(not_taken_off_set); |
| 1715 } | |
| 1716 | |
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1717 void set_not_taken(uint cnt) { |
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1718 set_uint_at(not_taken_off_set, cnt); |
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1719 } |
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1720 |
| 0 | 1721 uint inc_not_taken() { |
| 1722 uint cnt = not_taken() + 1; | |
| 1723 // Did we wrap? Will compiler screw us?? | |
| 1724 if (cnt == 0) cnt--; | |
| 1725 set_uint_at(not_taken_off_set, cnt); | |
| 1726 return cnt; | |
| 1727 } | |
| 1728 | |
| 1729 // Code generation support | |
| 1730 static ByteSize not_taken_offset() { | |
| 1731 return cell_offset(not_taken_off_set); | |
| 1732 } | |
| 1733 static ByteSize branch_data_size() { | |
| 1734 return cell_offset(branch_cell_count); | |
| 1735 } | |
| 1736 | |
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1737 #ifdef CC_INTERP |
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1738 static int branch_data_size_in_bytes() { |
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1739 return cell_offset_in_bytes(branch_cell_count); |
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1740 } |
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1741 |
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1742 static void increment_not_taken_count_no_overflow(DataLayout* layout) { |
|
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1743 increment_uint_at_no_overflow(layout, not_taken_off_set); |
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1744 } |
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1745 |
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1746 static DataLayout* advance_not_taken(DataLayout* layout) { |
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1747 return (DataLayout*) (((address)layout) + (ssize_t)BranchData::branch_data_size_in_bytes()); |
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1748 } |
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1749 #endif // CC_INTERP |
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1750 |
| 0 | 1751 // Specific initialization. |
|
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1752 void post_initialize(BytecodeStream* stream, MethodData* mdo); |
| 0 | 1753 |
| 1754 #ifndef PRODUCT | |
|
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1755 void print_data_on(outputStream* st, const char* extra = NULL) const; |
| 0 | 1756 #endif |
| 1757 }; | |
| 1758 | |
| 1759 // ArrayData | |
| 1760 // | |
| 1761 // A ArrayData is a base class for accessing profiling data which does | |
| 1762 // not have a statically known size. It consists of an array length | |
| 1763 // and an array start. | |
| 1764 class ArrayData : public ProfileData { | |
| 1765 protected: | |
| 1766 friend class DataLayout; | |
| 1767 | |
| 1768 enum { | |
| 1769 array_len_off_set, | |
| 1770 array_start_off_set | |
| 1771 }; | |
| 1772 | |
|
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1773 uint array_uint_at(int index) const { |
| 0 | 1774 int aindex = index + array_start_off_set; |
| 1775 return uint_at(aindex); | |
| 1776 } | |
|
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1777 int array_int_at(int index) const { |
| 0 | 1778 int aindex = index + array_start_off_set; |
| 1779 return int_at(aindex); | |
| 1780 } | |
|
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1781 oop array_oop_at(int index) const { |
| 0 | 1782 int aindex = index + array_start_off_set; |
| 1783 return oop_at(aindex); | |
| 1784 } | |
| 1785 void array_set_int_at(int index, int value) { | |
| 1786 int aindex = index + array_start_off_set; | |
| 1787 set_int_at(aindex, value); | |
| 1788 } | |
| 1789 | |
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1790 #ifdef CC_INTERP |
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1791 // Static low level accessors for DataLayout with ArrayData's semantics. |
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1792 |
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1793 static void increment_array_uint_at_no_overflow(DataLayout* layout, int index) { |
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1794 int aindex = index + array_start_off_set; |
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1795 increment_uint_at_no_overflow(layout, aindex); |
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1796 } |
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1797 |
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1798 static int array_int_at(DataLayout* layout, int index) { |
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1799 int aindex = index + array_start_off_set; |
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1800 return int_at(layout, aindex); |
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1801 } |
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1802 #endif // CC_INTERP |
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1803 |
| 0 | 1804 // Code generation support for subclasses. |
| 1805 static ByteSize array_element_offset(int index) { | |
| 1806 return cell_offset(array_start_off_set + index); | |
| 1807 } | |
| 1808 | |
| 1809 public: | |
| 1810 ArrayData(DataLayout* layout) : ProfileData(layout) {} | |
| 1811 | |
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1812 virtual bool is_ArrayData() const { return true; } |
| 0 | 1813 |
| 1814 static int static_cell_count() { | |
| 1815 return -1; | |
| 1816 } | |
| 1817 | |
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1818 int array_len() const { |
| 0 | 1819 return int_at_unchecked(array_len_off_set); |
| 1820 } | |
| 1821 | |
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1822 virtual int cell_count() const { |
| 0 | 1823 return array_len() + 1; |
| 1824 } | |
| 1825 | |
| 1826 // Code generation support | |
| 1827 static ByteSize array_len_offset() { | |
| 1828 return cell_offset(array_len_off_set); | |
| 1829 } | |
| 1830 static ByteSize array_start_offset() { | |
| 1831 return cell_offset(array_start_off_set); | |
| 1832 } | |
| 1833 }; | |
| 1834 | |
| 1835 // MultiBranchData | |
| 1836 // | |
| 1837 // A MultiBranchData is used to access profiling information for | |
| 1838 // a multi-way branch (*switch bytecodes). It consists of a series | |
| 1839 // of (count, displacement) pairs, which count the number of times each | |
| 1840 // case was taken and specify the data displacment for each branch target. | |
| 1841 class MultiBranchData : public ArrayData { | |
| 1842 protected: | |
| 1843 enum { | |
| 1844 default_count_off_set, | |
| 1845 default_disaplacement_off_set, | |
| 1846 case_array_start | |
| 1847 }; | |
| 1848 enum { | |
| 1849 relative_count_off_set, | |
| 1850 relative_displacement_off_set, | |
| 1851 per_case_cell_count | |
| 1852 }; | |
| 1853 | |
| 1854 void set_default_displacement(int displacement) { | |
| 1855 array_set_int_at(default_disaplacement_off_set, displacement); | |
| 1856 } | |
| 1857 void set_displacement_at(int index, int displacement) { | |
| 1858 array_set_int_at(case_array_start + | |
| 1859 index * per_case_cell_count + | |
| 1860 relative_displacement_off_set, | |
| 1861 displacement); | |
| 1862 } | |
| 1863 | |
| 1864 public: | |
| 1865 MultiBranchData(DataLayout* layout) : ArrayData(layout) { | |
| 1866 assert(layout->tag() == DataLayout::multi_branch_data_tag, "wrong type"); | |
| 1867 } | |
| 1868 | |
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1869 virtual bool is_MultiBranchData() const { return true; } |
| 0 | 1870 |
| 1871 static int compute_cell_count(BytecodeStream* stream); | |
| 1872 | |
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1873 int number_of_cases() const { |
| 0 | 1874 int alen = array_len() - 2; // get rid of default case here. |
| 1875 assert(alen % per_case_cell_count == 0, "must be even"); | |
| 1876 return (alen / per_case_cell_count); | |
| 1877 } | |
| 1878 | |
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1879 uint default_count() const { |
| 0 | 1880 return array_uint_at(default_count_off_set); |
| 1881 } | |
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1882 int default_displacement() const { |
| 0 | 1883 return array_int_at(default_disaplacement_off_set); |
| 1884 } | |
| 1885 | |
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1886 uint count_at(int index) const { |
| 0 | 1887 return array_uint_at(case_array_start + |
| 1888 index * per_case_cell_count + | |
| 1889 relative_count_off_set); | |
| 1890 } | |
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1891 int displacement_at(int index) const { |
| 0 | 1892 return array_int_at(case_array_start + |
| 1893 index * per_case_cell_count + | |
| 1894 relative_displacement_off_set); | |
| 1895 } | |
| 1896 | |
| 1897 // Code generation support | |
| 1898 static ByteSize default_count_offset() { | |
| 1899 return array_element_offset(default_count_off_set); | |
| 1900 } | |
| 1901 static ByteSize default_displacement_offset() { | |
| 1902 return array_element_offset(default_disaplacement_off_set); | |
| 1903 } | |
| 1904 static ByteSize case_count_offset(int index) { | |
| 1905 return case_array_offset() + | |
| 1906 (per_case_size() * index) + | |
| 1907 relative_count_offset(); | |
| 1908 } | |
| 1909 static ByteSize case_array_offset() { | |
| 1910 return array_element_offset(case_array_start); | |
| 1911 } | |
| 1912 static ByteSize per_case_size() { | |
| 1913 return in_ByteSize(per_case_cell_count) * cell_size; | |
| 1914 } | |
| 1915 static ByteSize relative_count_offset() { | |
| 1916 return in_ByteSize(relative_count_off_set) * cell_size; | |
| 1917 } | |
| 1918 static ByteSize relative_displacement_offset() { | |
| 1919 return in_ByteSize(relative_displacement_off_set) * cell_size; | |
| 1920 } | |
| 1921 | |
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1922 #ifdef CC_INTERP |
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1923 static void increment_count_no_overflow(DataLayout* layout, int index) { |
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1924 if (index == -1) { |
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1925 increment_array_uint_at_no_overflow(layout, default_count_off_set); |
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1926 } else { |
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1927 increment_array_uint_at_no_overflow(layout, case_array_start + |
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1928 index * per_case_cell_count + |
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1929 relative_count_off_set); |
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1930 } |
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1931 } |
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1932 |
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1933 static DataLayout* advance(DataLayout* layout, int index) { |
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1934 if (index == -1) { |
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1935 return (DataLayout*) (((address)layout) + (ssize_t)array_int_at(layout, default_disaplacement_off_set)); |
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1936 } else { |
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1937 return (DataLayout*) (((address)layout) + (ssize_t)array_int_at(layout, case_array_start + |
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1938 index * per_case_cell_count + |
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1939 relative_displacement_off_set)); |
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1940 } |
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1941 } |
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1942 #endif // CC_INTERP |
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1943 |
| 0 | 1944 // Specific initialization. |
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1945 void post_initialize(BytecodeStream* stream, MethodData* mdo); |
| 0 | 1946 |
| 1947 #ifndef PRODUCT | |
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1948 void print_data_on(outputStream* st, const char* extra = NULL) const; |
| 0 | 1949 #endif |
| 1950 }; | |
| 1951 | |
|
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1952 class ArgInfoData : public ArrayData { |
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1953 |
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1954 public: |
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1955 ArgInfoData(DataLayout* layout) : ArrayData(layout) { |
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1956 assert(layout->tag() == DataLayout::arg_info_data_tag, "wrong type"); |
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1957 } |
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1958 |
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1959 virtual bool is_ArgInfoData() const { return true; } |
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1960 |
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1961 |
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1962 int number_of_args() const { |
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1963 return array_len(); |
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1964 } |
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1965 |
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1966 uint arg_modified(int arg) const { |
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1967 return array_uint_at(arg); |
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1968 } |
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1969 |
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1970 void set_arg_modified(int arg, uint val) { |
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1971 array_set_int_at(arg, val); |
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1972 } |
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1973 |
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1974 #ifndef PRODUCT |
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1975 void print_data_on(outputStream* st, const char* extra = NULL) const; |
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1976 #endif |
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1977 }; |
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1978 |
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1979 // ParametersTypeData |
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1980 // |
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1981 // A ParametersTypeData is used to access profiling information about |
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1982 // types of parameters to a method |
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1983 class ParametersTypeData : public ArrayData { |
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1984 |
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1985 private: |
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1986 TypeStackSlotEntries _parameters; |
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1987 |
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1988 static int stack_slot_local_offset(int i) { |
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1989 assert_profiling_enabled(); |
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1990 return array_start_off_set + TypeStackSlotEntries::stack_slot_local_offset(i); |
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1991 } |
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1992 |
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1993 static int type_local_offset(int i) { |
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1994 assert_profiling_enabled(); |
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1995 return array_start_off_set + TypeStackSlotEntries::type_local_offset(i); |
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1996 } |
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1997 |
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1998 static bool profiling_enabled(); |
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1999 static void assert_profiling_enabled() { |
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2000 assert(profiling_enabled(), "method parameters profiling should be on"); |
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2001 } |
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2002 |
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2003 public: |
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2004 ParametersTypeData(DataLayout* layout) : ArrayData(layout), _parameters(1, number_of_parameters()) { |
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2005 assert(layout->tag() == DataLayout::parameters_type_data_tag, "wrong type"); |
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2006 // Some compilers (VC++) don't want this passed in member initialization list |
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2007 _parameters.set_profile_data(this); |
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2008 } |
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2009 |
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2010 static int compute_cell_count(Method* m); |
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2011 |
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2012 virtual bool is_ParametersTypeData() const { return true; } |
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2013 |
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2014 virtual void post_initialize(BytecodeStream* stream, MethodData* mdo); |
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2015 |
|
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2016 int number_of_parameters() const { |
|
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2017 return array_len() / TypeStackSlotEntries::per_arg_count(); |
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2018 } |
|
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2019 |
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2020 const TypeStackSlotEntries* parameters() const { return &_parameters; } |
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|
2021 |
|
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2022 uint stack_slot(int i) const { |
|
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2023 return _parameters.stack_slot(i); |
|
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|
2024 } |
|
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|
2025 |
|
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2026 void set_type(int i, Klass* k) { |
|
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2027 intptr_t current = _parameters.type(i); |
|
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|
2028 _parameters.set_type(i, TypeEntries::with_status((intptr_t)k, current)); |
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2029 } |
|
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|
2030 |
|
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|
2031 virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure) { |
|
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2032 _parameters.clean_weak_klass_links(is_alive_closure); |
|
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2033 } |
|
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2034 |
|
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2035 #ifndef PRODUCT |
|
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|
2036 virtual void print_data_on(outputStream* st, const char* extra = NULL) const; |
|
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|
2037 #endif |
|
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|
2038 |
|
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|
2039 static ByteSize stack_slot_offset(int i) { |
|
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|
2040 return cell_offset(stack_slot_local_offset(i)); |
|
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|
2041 } |
|
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|
2042 |
|
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|
2043 static ByteSize type_offset(int i) { |
|
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|
2044 return cell_offset(type_local_offset(i)); |
|
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|
2045 } |
|
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|
2046 }; |
|
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|
2047 |
|
17728
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|
2048 // SpeculativeTrapData |
|
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|
2049 // |
|
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|
2050 // A SpeculativeTrapData is used to record traps due to type |
|
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|
2051 // speculation. It records the root of the compilation: that type |
|
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|
2052 // speculation is wrong in the context of one compilation (for |
|
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|
2053 // method1) doesn't mean it's wrong in the context of another one (for |
|
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|
2054 // method2). Type speculation could have more/different data in the |
|
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|
2055 // context of the compilation of method2 and it's worthwhile to try an |
|
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|
2056 // optimization that failed for compilation of method1 in the context |
|
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|
2057 // of compilation of method2. |
|
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|
2058 // Space for SpeculativeTrapData entries is allocated from the extra |
|
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|
2059 // data space in the MDO. If we run out of space, the trap data for |
|
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|
2060 // the ProfileData at that bci is updated. |
|
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|
2061 class SpeculativeTrapData : public ProfileData { |
|
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|
2062 protected: |
|
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|
2063 enum { |
|
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|
2064 method_offset, |
|
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|
2065 speculative_trap_cell_count |
|
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|
2066 }; |
|
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|
2067 public: |
|
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|
2068 SpeculativeTrapData(DataLayout* layout) : ProfileData(layout) { |
|
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|
2069 assert(layout->tag() == DataLayout::speculative_trap_data_tag, "wrong type"); |
|
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|
2070 } |
|
b8413a9cbb84
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|
2071 |
|
b8413a9cbb84
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|
2072 virtual bool is_SpeculativeTrapData() const { return true; } |
|
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|
2073 |
|
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|
2074 static int static_cell_count() { |
|
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|
2075 return speculative_trap_cell_count; |
|
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|
2076 } |
|
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|
2077 |
|
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|
2078 virtual int cell_count() const { |
|
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|
2079 return static_cell_count(); |
|
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|
2080 } |
|
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|
2081 |
|
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|
2082 // Direct accessor |
|
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|
2083 Method* method() const { |
|
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|
2084 return (Method*)intptr_at(method_offset); |
|
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|
2085 } |
|
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2086 |
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2087 void set_method(Method* m) { |
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2088 set_intptr_at(method_offset, (intptr_t)m); |
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2089 } |
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2090 |
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2091 #ifndef PRODUCT |
|
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2092 virtual void print_data_on(outputStream* st, const char* extra = NULL) const; |
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2093 #endif |
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|
2094 }; |
|
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2095 |
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2096 // MethodData* |
| 0 | 2097 // |
|
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2098 // A MethodData* holds information which has been collected about |
| 0 | 2099 // a method. Its layout looks like this: |
| 2100 // | |
| 2101 // ----------------------------- | |
| 2102 // | header | | |
| 2103 // | klass | | |
| 2104 // ----------------------------- | |
| 2105 // | method | | |
|
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2106 // | size of the MethodData* | |
| 0 | 2107 // ----------------------------- |
| 2108 // | Data entries... | | |
| 2109 // | (variable size) | | |
| 2110 // | | | |
| 2111 // . . | |
| 2112 // . . | |
| 2113 // . . | |
| 2114 // | | | |
| 2115 // ----------------------------- | |
| 2116 // | |
| 2117 // The data entry area is a heterogeneous array of DataLayouts. Each | |
| 2118 // DataLayout in the array corresponds to a specific bytecode in the | |
| 2119 // method. The entries in the array are sorted by the corresponding | |
| 2120 // bytecode. Access to the data is via resource-allocated ProfileData, | |
| 2121 // which point to the underlying blocks of DataLayout structures. | |
| 2122 // | |
| 2123 // During interpretation, if profiling in enabled, the interpreter | |
| 2124 // maintains a method data pointer (mdp), which points at the entry | |
| 2125 // in the array corresponding to the current bci. In the course of | |
| 2126 // intepretation, when a bytecode is encountered that has profile data | |
| 2127 // associated with it, the entry pointed to by mdp is updated, then the | |
| 2128 // mdp is adjusted to point to the next appropriate DataLayout. If mdp | |
| 2129 // is NULL to begin with, the interpreter assumes that the current method | |
| 2130 // is not (yet) being profiled. | |
| 2131 // | |
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2132 // In MethodData* parlance, "dp" is a "data pointer", the actual address |
| 0 | 2133 // of a DataLayout element. A "di" is a "data index", the offset in bytes |
| 2134 // from the base of the data entry array. A "displacement" is the byte offset | |
| 2135 // in certain ProfileData objects that indicate the amount the mdp must be | |
| 2136 // adjusted in the event of a change in control flow. | |
| 2137 // | |
| 2138 | |
|
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2139 CC_INTERP_ONLY(class BytecodeInterpreter;) |
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2140 |
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2141 class MethodData : public Metadata { |
| 0 | 2142 friend class VMStructs; |
|
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2143 CC_INTERP_ONLY(friend class BytecodeInterpreter;) |
| 0 | 2144 private: |
| 2145 friend class ProfileData; | |
| 2146 | |
|
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2147 // Back pointer to the Method* |
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2148 Method* _method; |
| 0 | 2149 |
| 2150 // Size of this oop in bytes | |
| 2151 int _size; | |
| 2152 | |
| 2153 // Cached hint for bci_to_dp and bci_to_data | |
| 2154 int _hint_di; | |
| 2155 | |
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2156 Mutex _extra_data_lock; |
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2157 |
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2158 MethodData(methodHandle method, int size, TRAPS); |
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2159 public: |
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2160 static MethodData* allocate(ClassLoaderData* loader_data, methodHandle method, TRAPS); |
|
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2161 MethodData() : _extra_data_lock(Monitor::leaf, "MDO extra data lock") {}; // For ciMethodData |
|
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2162 |
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2163 bool is_methodData() const volatile { return true; } |
|
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2164 void initialize(); |
|
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2165 |
| 0 | 2166 // Whole-method sticky bits and flags |
| 2167 enum { | |
| 20804 | 2168 _trap_hist_limit = 20 GRAAL_ONLY(+5), // decoupled from Deoptimization::Reason_LIMIT |
| 0 | 2169 _trap_hist_mask = max_jubyte, |
| 2170 _extra_data_count = 4 // extra DataLayout headers, for trap history | |
| 2171 }; // Public flag values | |
| 2172 private: | |
| 2173 uint _nof_decompiles; // count of all nmethod removals | |
| 2174 uint _nof_overflow_recompiles; // recompile count, excluding recomp. bits | |
| 2175 uint _nof_overflow_traps; // trap count, excluding _trap_hist | |
| 2176 union { | |
| 2177 intptr_t _align; | |
| 2178 u1 _array[_trap_hist_limit]; | |
| 2179 } _trap_hist; | |
| 2180 | |
| 2181 // Support for interprocedural escape analysis, from Thomas Kotzmann. | |
| 2182 intx _eflags; // flags on escape information | |
| 2183 intx _arg_local; // bit set of non-escaping arguments | |
| 2184 intx _arg_stack; // bit set of stack-allocatable arguments | |
| 2185 intx _arg_returned; // bit set of returned arguments | |
| 2186 | |
| 1783 | 2187 int _creation_mileage; // method mileage at MDO creation |
| 2188 | |
| 2189 // How many invocations has this MDO seen? | |
| 2190 // These counters are used to determine the exact age of MDO. | |
| 2191 // We need those because in tiered a method can be concurrently | |
| 2192 // executed at different levels. | |
| 2193 InvocationCounter _invocation_counter; | |
| 2194 // Same for backedges. | |
| 2195 InvocationCounter _backedge_counter; | |
| 2252 | 2196 // Counter values at the time profiling started. |
| 2197 int _invocation_counter_start; | |
| 2198 int _backedge_counter_start; | |
| 17780 | 2199 |
| 2200 #if INCLUDE_RTM_OPT | |
| 2201 // State of RTM code generation during compilation of the method | |
| 2202 int _rtm_state; | |
| 2203 #endif | |
| 2204 | |
| 1783 | 2205 // Number of loops and blocks is computed when compiling the first |
| 2206 // time with C1. It is used to determine if method is trivial. | |
| 2207 short _num_loops; | |
| 2208 short _num_blocks; | |
| 2209 // Does this method contain anything worth profiling? | |
|
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2210 enum WouldProfile {unknown, no_profile, profile}; |
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2211 WouldProfile _would_profile; |
| 0 | 2212 |
|
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|
2213 #ifdef GRAAL |
|
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2214 // Support for HotSpotMethodData.setCompiledGraphSize(int) |
|
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|
2215 int _graal_node_count; |
|
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|
2216 #endif |
|
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|
2217 |
| 0 | 2218 // Size of _data array in bytes. (Excludes header and extra_data fields.) |
| 2219 int _data_size; | |
| 2220 | |
|
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2221 // data index for the area dedicated to parameters. -1 if no |
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|
2222 // parameter profiling. |
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2223 int _parameters_type_data_di; |
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|
2224 |
| 0 | 2225 // Beginning of the data entries |
| 2226 intptr_t _data[1]; | |
| 2227 | |
| 2228 // Helper for size computation | |
| 2229 static int compute_data_size(BytecodeStream* stream); | |
| 2230 static int bytecode_cell_count(Bytecodes::Code code); | |
|
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2231 static bool is_speculative_trap_bytecode(Bytecodes::Code code); |
| 0 | 2232 enum { no_profile_data = -1, variable_cell_count = -2 }; |
| 2233 | |
| 2234 // Helper for initialization | |
|
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2235 DataLayout* data_layout_at(int data_index) const { |
| 0 | 2236 assert(data_index % sizeof(intptr_t) == 0, "unaligned"); |
| 2237 return (DataLayout*) (((address)_data) + data_index); | |
| 2238 } | |
| 2239 | |
| 2240 // Initialize an individual data segment. Returns the size of | |
| 2241 // the segment in bytes. | |
| 2242 int initialize_data(BytecodeStream* stream, int data_index); | |
| 2243 | |
| 2244 // Helper for data_at | |
|
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2245 DataLayout* limit_data_position() const { |
| 0 | 2246 return (DataLayout*)((address)data_base() + _data_size); |
| 2247 } | |
|
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2248 bool out_of_bounds(int data_index) const { |
| 0 | 2249 return data_index >= data_size(); |
| 2250 } | |
| 2251 | |
| 2252 // Give each of the data entries a chance to perform specific | |
| 2253 // data initialization. | |
| 2254 void post_initialize(BytecodeStream* stream); | |
| 2255 | |
| 2256 // hint accessors | |
| 2257 int hint_di() const { return _hint_di; } | |
| 2258 void set_hint_di(int di) { | |
| 2259 assert(!out_of_bounds(di), "hint_di out of bounds"); | |
| 2260 _hint_di = di; | |
| 2261 } | |
| 2262 ProfileData* data_before(int bci) { | |
| 2263 // avoid SEGV on this edge case | |
| 2264 if (data_size() == 0) | |
| 2265 return NULL; | |
| 2266 int hint = hint_di(); | |
| 2267 if (data_layout_at(hint)->bci() <= bci) | |
| 2268 return data_at(hint); | |
| 2269 return first_data(); | |
| 2270 } | |
| 2271 | |
| 2272 // What is the index of the first data entry? | |
|
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2273 int first_di() const { return 0; } |
| 0 | 2274 |
|
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2275 ProfileData* bci_to_extra_data_helper(int bci, Method* m, DataLayout*& dp, bool concurrent); |
| 0 | 2276 // Find or create an extra ProfileData: |
|
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2277 ProfileData* bci_to_extra_data(int bci, Method* m, bool create_if_missing); |
| 0 | 2278 |
|
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|
2279 // return the argument info cell |
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|
2280 ArgInfoData *arg_info(); |
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2281 |
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2282 enum { |
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2283 no_type_profile = 0, |
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2284 type_profile_jsr292 = 1, |
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|
2285 type_profile_all = 2 |
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|
2286 }; |
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|
2287 |
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2288 static bool profile_jsr292(methodHandle m, int bci); |
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|
2289 static int profile_arguments_flag(); |
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|
2290 static bool profile_all_arguments(); |
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|
2291 static bool profile_arguments_for_invoke(methodHandle m, int bci); |
|
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2292 static int profile_return_flag(); |
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2293 static bool profile_all_return(); |
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2294 static bool profile_return_for_invoke(methodHandle m, int bci); |
|
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|
2295 static int profile_parameters_flag(); |
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|
2296 static bool profile_parameters_jsr292_only(); |
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2297 static bool profile_all_parameters(); |
|
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2298 |
|
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2299 void clean_extra_data(BoolObjectClosure* is_alive); |
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2300 void clean_extra_data_helper(DataLayout* dp, int shift, bool reset = false); |
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2301 void verify_extra_data_clean(BoolObjectClosure* is_alive); |
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2302 |
| 0 | 2303 public: |
| 2304 static int header_size() { | |
|
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2305 return sizeof(MethodData)/wordSize; |
| 0 | 2306 } |
| 2307 | |
|
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2308 // Compute the size of a MethodData* before it is created. |
| 0 | 2309 static int compute_allocation_size_in_bytes(methodHandle method); |
| 2310 static int compute_allocation_size_in_words(methodHandle method); | |
|
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2311 static int compute_extra_data_count(int data_size, int empty_bc_count, bool needs_speculative_traps); |
| 0 | 2312 |
| 2313 // Determine if a given bytecode can have profile information. | |
| 2314 static bool bytecode_has_profile(Bytecodes::Code code) { | |
| 2315 return bytecode_cell_count(code) != no_profile_data; | |
| 2316 } | |
| 2317 | |
|
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2318 // reset into original state |
|
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2319 void init(); |
| 0 | 2320 |
| 2321 // My size | |
|
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2322 int size_in_bytes() const { return _size; } |
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2323 int size() const { return align_object_size(align_size_up(_size, BytesPerWord)/BytesPerWord); } |
| 7956 | 2324 #if INCLUDE_SERVICES |
| 2325 void collect_statistics(KlassSizeStats *sz) const; | |
| 2326 #endif | |
| 0 | 2327 |
| 2328 int creation_mileage() const { return _creation_mileage; } | |
| 2329 void set_creation_mileage(int x) { _creation_mileage = x; } | |
| 1783 | 2330 |
| 2331 int invocation_count() { | |
| 2332 if (invocation_counter()->carry()) { | |
| 2333 return InvocationCounter::count_limit; | |
| 2334 } | |
| 2335 return invocation_counter()->count(); | |
| 2336 } | |
| 2337 int backedge_count() { | |
| 2338 if (backedge_counter()->carry()) { | |
| 2339 return InvocationCounter::count_limit; | |
| 2340 } | |
| 2341 return backedge_counter()->count(); | |
| 2342 } | |
| 2343 | |
| 2252 | 2344 int invocation_count_start() { |
| 2345 if (invocation_counter()->carry()) { | |
| 2346 return 0; | |
| 2347 } | |
| 2348 return _invocation_counter_start; | |
| 2349 } | |
| 2350 | |
| 2351 int backedge_count_start() { | |
| 2352 if (backedge_counter()->carry()) { | |
| 2353 return 0; | |
| 2354 } | |
| 2355 return _backedge_counter_start; | |
| 2356 } | |
| 2357 | |
| 2358 int invocation_count_delta() { return invocation_count() - invocation_count_start(); } | |
| 2359 int backedge_count_delta() { return backedge_count() - backedge_count_start(); } | |
| 2360 | |
| 2361 void reset_start_counters() { | |
| 2362 _invocation_counter_start = invocation_count(); | |
| 2363 _backedge_counter_start = backedge_count(); | |
| 2364 } | |
| 2365 | |
| 1783 | 2366 InvocationCounter* invocation_counter() { return &_invocation_counter; } |
| 2367 InvocationCounter* backedge_counter() { return &_backedge_counter; } | |
| 2368 | |
| 17780 | 2369 #if INCLUDE_RTM_OPT |
| 2370 int rtm_state() const { | |
| 2371 return _rtm_state; | |
| 2372 } | |
| 2373 void set_rtm_state(RTMState rstate) { | |
| 2374 _rtm_state = (int)rstate; | |
| 2375 } | |
| 2376 void atomic_set_rtm_state(RTMState rstate) { | |
| 2377 Atomic::store((int)rstate, &_rtm_state); | |
| 2378 } | |
| 2379 | |
| 2380 static int rtm_state_offset_in_bytes() { | |
| 2381 return offset_of(MethodData, _rtm_state); | |
| 2382 } | |
| 2383 #endif | |
| 2384 | |
|
20651
600c44255e5f
8056071: compiler/whitebox/IsMethodCompilableTest.java fails with 'method() is not compilable after 3 iterations'
thartmann
parents:
20457
diff
changeset
|
2385 void set_would_profile(bool p) { _would_profile = p ? profile : no_profile; } |
|
600c44255e5f
8056071: compiler/whitebox/IsMethodCompilableTest.java fails with 'method() is not compilable after 3 iterations'
thartmann
parents:
20457
diff
changeset
|
2386 bool would_profile() const { return _would_profile != no_profile; } |
| 1783 | 2387 |
| 2388 int num_loops() const { return _num_loops; } | |
| 2389 void set_num_loops(int n) { _num_loops = n; } | |
| 2390 int num_blocks() const { return _num_blocks; } | |
| 2391 void set_num_blocks(int n) { _num_blocks = n; } | |
| 2392 | |
| 0 | 2393 bool is_mature() const; // consult mileage and ProfileMaturityPercentage |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3905
diff
changeset
|
2394 static int mileage_of(Method* m); |
| 0 | 2395 |
| 2396 // Support for interprocedural escape analysis, from Thomas Kotzmann. | |
| 2397 enum EscapeFlag { | |
| 2398 estimated = 1 << 0, | |
|
78
e1e86702e43e
6680665: bytecode Escape Analyzer produces incorrect escape information for methods without oop arguments
kvn
parents:
45
diff
changeset
|
2399 return_local = 1 << 1, |
|
e1e86702e43e
6680665: bytecode Escape Analyzer produces incorrect escape information for methods without oop arguments
kvn
parents:
45
diff
changeset
|
2400 return_allocated = 1 << 2, |
|
e1e86702e43e
6680665: bytecode Escape Analyzer produces incorrect escape information for methods without oop arguments
kvn
parents:
45
diff
changeset
|
2401 allocated_escapes = 1 << 3, |
|
e1e86702e43e
6680665: bytecode Escape Analyzer produces incorrect escape information for methods without oop arguments
kvn
parents:
45
diff
changeset
|
2402 unknown_modified = 1 << 4 |
| 0 | 2403 }; |
| 2404 | |
| 2405 intx eflags() { return _eflags; } | |
| 2406 intx arg_local() { return _arg_local; } | |
| 2407 intx arg_stack() { return _arg_stack; } | |
| 2408 intx arg_returned() { return _arg_returned; } | |
|
45
48a3fa21394b
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
0
diff
changeset
|
2409 uint arg_modified(int a) { ArgInfoData *aid = arg_info(); |
|
9080
b84fd7d73702
8007288: Additional WB API for compiler's testing
iignatyev
parents:
8000
diff
changeset
|
2410 assert(aid != NULL, "arg_info must be not null"); |
|
45
48a3fa21394b
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
0
diff
changeset
|
2411 assert(a >= 0 && a < aid->number_of_args(), "valid argument number"); |
|
48a3fa21394b
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
0
diff
changeset
|
2412 return aid->arg_modified(a); } |
| 0 | 2413 |
| 2414 void set_eflags(intx v) { _eflags = v; } | |
| 2415 void set_arg_local(intx v) { _arg_local = v; } | |
| 2416 void set_arg_stack(intx v) { _arg_stack = v; } | |
| 2417 void set_arg_returned(intx v) { _arg_returned = v; } | |
|
45
48a3fa21394b
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
0
diff
changeset
|
2418 void set_arg_modified(int a, uint v) { ArgInfoData *aid = arg_info(); |
|
9080
b84fd7d73702
8007288: Additional WB API for compiler's testing
iignatyev
parents:
8000
diff
changeset
|
2419 assert(aid != NULL, "arg_info must be not null"); |
|
45
48a3fa21394b
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
0
diff
changeset
|
2420 assert(a >= 0 && a < aid->number_of_args(), "valid argument number"); |
|
48a3fa21394b
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
0
diff
changeset
|
2421 aid->set_arg_modified(a, v); } |
| 0 | 2422 |
| 2423 void clear_escape_info() { _eflags = _arg_local = _arg_stack = _arg_returned = 0; } | |
| 2424 | |
| 2425 // Location and size of data area | |
| 2426 address data_base() const { | |
| 2427 return (address) _data; | |
| 2428 } | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3905
diff
changeset
|
2429 int data_size() const { |
| 0 | 2430 return _data_size; |
| 2431 } | |
| 2432 | |
| 2433 // Accessors | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3905
diff
changeset
|
2434 Method* method() const { return _method; } |
| 0 | 2435 |
| 2436 // Get the data at an arbitrary (sort of) data index. | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3905
diff
changeset
|
2437 ProfileData* data_at(int data_index) const; |
| 0 | 2438 |
| 2439 // Walk through the data in order. | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3905
diff
changeset
|
2440 ProfileData* first_data() const { return data_at(first_di()); } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3905
diff
changeset
|
2441 ProfileData* next_data(ProfileData* current) const; |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3905
diff
changeset
|
2442 bool is_valid(ProfileData* current) const { return current != NULL; } |
| 0 | 2443 |
| 2444 // Convert a dp (data pointer) to a di (data index). | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3905
diff
changeset
|
2445 int dp_to_di(address dp) const { |
| 0 | 2446 return dp - ((address)_data); |
| 2447 } | |
| 2448 | |
| 2449 address di_to_dp(int di) { | |
| 2450 return (address)data_layout_at(di); | |
| 2451 } | |
| 2452 | |
| 2453 // bci to di/dp conversion. | |
| 2454 address bci_to_dp(int bci); | |
| 2455 int bci_to_di(int bci) { | |
| 2456 return dp_to_di(bci_to_dp(bci)); | |
| 2457 } | |
| 2458 | |
| 2459 // Get the data at an arbitrary bci, or NULL if there is none. | |
| 2460 ProfileData* bci_to_data(int bci); | |
| 2461 | |
| 2462 // Same, but try to create an extra_data record if one is needed: | |
|
17728
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
13080
diff
changeset
|
2463 ProfileData* allocate_bci_to_data(int bci, Method* m) { |
|
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
13080
diff
changeset
|
2464 ProfileData* data = NULL; |
|
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
13080
diff
changeset
|
2465 // If m not NULL, try to allocate a SpeculativeTrapData entry |
|
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
13080
diff
changeset
|
2466 if (m == NULL) { |
|
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
13080
diff
changeset
|
2467 data = bci_to_data(bci); |
|
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
13080
diff
changeset
|
2468 } |
|
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
13080
diff
changeset
|
2469 if (data != NULL) { |
|
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
13080
diff
changeset
|
2470 return data; |
|
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
13080
diff
changeset
|
2471 } |
|
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
13080
diff
changeset
|
2472 data = bci_to_extra_data(bci, m, true); |
|
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
13080
diff
changeset
|
2473 if (data != NULL) { |
|
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
13080
diff
changeset
|
2474 return data; |
|
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
13080
diff
changeset
|
2475 } |
|
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
13080
diff
changeset
|
2476 // If SpeculativeTrapData allocation fails try to allocate a |
|
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
13080
diff
changeset
|
2477 // regular entry |
|
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
13080
diff
changeset
|
2478 data = bci_to_data(bci); |
|
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
13080
diff
changeset
|
2479 if (data != NULL) { |
|
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
13080
diff
changeset
|
2480 return data; |
|
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
13080
diff
changeset
|
2481 } |
|
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
13080
diff
changeset
|
2482 return bci_to_extra_data(bci, NULL, true); |
| 0 | 2483 } |
| 2484 | |
| 2485 // Add a handful of extra data records, for trap tracking. | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3905
diff
changeset
|
2486 DataLayout* extra_data_base() const { return limit_data_position(); } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3905
diff
changeset
|
2487 DataLayout* extra_data_limit() const { return (DataLayout*)((address)this + size_in_bytes()); } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3905
diff
changeset
|
2488 int extra_data_size() const { return (address)extra_data_limit() |
| 0 | 2489 - (address)extra_data_base(); } |
|
17728
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
13080
diff
changeset
|
2490 static DataLayout* next_extra(DataLayout* dp); |
| 0 | 2491 |
| 2492 // Return (uint)-1 for overflow. | |
| 2493 uint trap_count(int reason) const { | |
|
13279
05de8cf71a41
fixed broken assertions
Doug Simon <doug.simon@oracle.com>
parents:
13216
diff
changeset
|
2494 assert((uint)reason < GRAAL_ONLY(2*) _trap_hist_limit, "oob"); |
| 0 | 2495 return (int)((_trap_hist._array[reason]+1) & _trap_hist_mask) - 1; |
| 2496 } | |
| 2497 // For loops: | |
| 2498 static uint trap_reason_limit() { return _trap_hist_limit; } | |
| 2499 static uint trap_count_limit() { return _trap_hist_mask; } | |
| 2500 uint inc_trap_count(int reason) { | |
| 2501 // Count another trap, anywhere in this method. | |
| 2502 assert(reason >= 0, "must be single trap"); | |
|
13279
05de8cf71a41
fixed broken assertions
Doug Simon <doug.simon@oracle.com>
parents:
13216
diff
changeset
|
2503 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>
parents:
5111
diff
changeset
|
2504 uint cnt1 = 1 + _trap_hist._array[reason]; |
|
dad1ac9dba7d
finished first implementation of disabling runtime feedback selectively based on deoptimization history
Christian Haeubl <christian.haeubl@oracle.com>
parents:
5111
diff
changeset
|
2505 if ((cnt1 & _trap_hist_mask) != 0) { // if no counter overflow... |
|
dad1ac9dba7d
finished first implementation of disabling runtime feedback selectively based on deoptimization history
Christian Haeubl <christian.haeubl@oracle.com>
parents:
5111
diff
changeset
|
2506 _trap_hist._array[reason] = cnt1; |
|
dad1ac9dba7d
finished first implementation of disabling runtime feedback selectively based on deoptimization history
Christian Haeubl <christian.haeubl@oracle.com>
parents:
5111
diff
changeset
|
2507 return cnt1; |
| 0 | 2508 } else { |
|
5114
dad1ac9dba7d
finished first implementation of disabling runtime feedback selectively based on deoptimization history
Christian Haeubl <christian.haeubl@oracle.com>
parents:
5111
diff
changeset
|
2509 return _trap_hist_mask + (++_nof_overflow_traps); |
| 0 | 2510 } |
| 2511 } | |
| 2512 | |
| 2513 uint overflow_trap_count() const { | |
| 2514 return _nof_overflow_traps; | |
| 2515 } | |
| 2516 uint overflow_recompile_count() const { | |
| 2517 return _nof_overflow_recompiles; | |
| 2518 } | |
| 2519 void inc_overflow_recompile_count() { | |
| 2520 _nof_overflow_recompiles += 1; | |
| 2521 } | |
| 2522 uint decompile_count() const { | |
| 2523 return _nof_decompiles; | |
| 2524 } | |
| 2525 void inc_decompile_count() { | |
| 2526 _nof_decompiles += 1; | |
|
1206
87684f1a88b5
6614597: Performance variability in jvm2008 xml.validation
kvn
parents:
948
diff
changeset
|
2527 if (decompile_count() > (uint)PerMethodRecompilationCutoff) { |
| 7998 | 2528 method()->set_not_compilable(CompLevel_full_optimization, true, "decompile_count > PerMethodRecompilationCutoff"); |
|
1206
87684f1a88b5
6614597: Performance variability in jvm2008 xml.validation
kvn
parents:
948
diff
changeset
|
2529 } |
| 0 | 2530 } |
| 2531 | |
|
12962
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
2532 // Return pointer to area dedicated to parameters in MDO |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
2533 ParametersTypeData* parameters_type_data() const { |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
2534 return _parameters_type_data_di != -1 ? data_layout_at(_parameters_type_data_di)->data_in()->as_ParametersTypeData() : NULL; |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
2535 } |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
2536 |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
2537 int parameters_type_data_di() const { |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
2538 assert(_parameters_type_data_di != -1, "no args type data"); |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
2539 return _parameters_type_data_di; |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
2540 } |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
2541 |
| 0 | 2542 // Support for code generation |
| 2543 static ByteSize data_offset() { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3905
diff
changeset
|
2544 return byte_offset_of(MethodData, _data[0]); |
| 0 | 2545 } |
| 2546 | |
|
5114
dad1ac9dba7d
finished first implementation of disabling runtime feedback selectively based on deoptimization history
Christian Haeubl <christian.haeubl@oracle.com>
parents:
5111
diff
changeset
|
2547 static ByteSize trap_history_offset() { |
|
6948
e522a00b91aa
Merge with http://hg.openjdk.java.net/hsx/hsx25/hotspot/ after NPG - C++ build works
Doug Simon <doug.simon@oracle.com>
diff
changeset
|
2548 return byte_offset_of(MethodData, _trap_hist._array); |
|
5114
dad1ac9dba7d
finished first implementation of disabling runtime feedback selectively based on deoptimization history
Christian Haeubl <christian.haeubl@oracle.com>
parents:
5111
diff
changeset
|
2549 } |
|
dad1ac9dba7d
finished first implementation of disabling runtime feedback selectively based on deoptimization history
Christian Haeubl <christian.haeubl@oracle.com>
parents:
5111
diff
changeset
|
2550 |
| 1783 | 2551 static ByteSize invocation_counter_offset() { |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3905
diff
changeset
|
2552 return byte_offset_of(MethodData, _invocation_counter); |
| 1783 | 2553 } |
| 2554 static ByteSize backedge_counter_offset() { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3905
diff
changeset
|
2555 return byte_offset_of(MethodData, _backedge_counter); |
| 1783 | 2556 } |
| 2557 | |
|
12962
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
2558 static ByteSize parameters_type_data_di_offset() { |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
2559 return byte_offset_of(MethodData, _parameters_type_data_di); |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
2560 } |
|
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
2561 |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3905
diff
changeset
|
2562 // Deallocation support - no pointer fields to deallocate |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3905
diff
changeset
|
2563 void deallocate_contents(ClassLoaderData* loader_data) {} |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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2564 |
| 0 | 2565 // GC support |
|
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2566 void set_size(int object_size_in_bytes) { _size = object_size_in_bytes; } |
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2567 |
|
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2568 // Printing |
|
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2569 #ifndef PRODUCT |
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2570 void print_on (outputStream* st) const; |
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2571 #endif |
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2572 void print_value_on(outputStream* st) const; |
| 0 | 2573 |
| 2574 #ifndef PRODUCT | |
| 2575 // printing support for method data | |
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2576 void print_data_on(outputStream* st) const; |
| 0 | 2577 #endif |
| 2578 | |
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2579 const char* internal_name() const { return "{method data}"; } |
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2580 |
| 0 | 2581 // verification |
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2582 void verify_on(outputStream* st); |
| 0 | 2583 void verify_data_on(outputStream* st); |
|
12875
d13d7aba8c12
8023657: New type profiling points: arguments to call
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2584 |
|
12962
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
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2585 static bool profile_parameters_for_method(methodHandle m); |
|
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2586 static bool profile_arguments(); |
|
17900
ce9fd31ffd14
8039975: SIGSEGV in MethodData::next_data(ProfileData*)
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|
2587 static bool profile_arguments_jsr292_only(); |
|
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2588 static bool profile_return(); |
|
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2589 static bool profile_parameters(); |
|
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2590 static bool profile_return_jsr292_only(); |
|
17728
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8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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|
2591 |
|
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|
2592 void clean_method_data(BoolObjectClosure* is_alive); |
| 18041 | 2593 |
|
14860
8762b6b8fbb6
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Tom Rodriguez <tom.rodriguez@oracle.com>
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14543
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|
2594 void clean_weak_method_links(); |
| 0 | 2595 }; |
| 1972 | 2596 |
| 2597 #endif // SHARE_VM_OOPS_METHODDATAOOP_HPP |