Mercurial > hg > graal-compiler
annotate src/share/vm/ci/ciMethodData.cpp @ 1818:c93c652551b5
6986944: JSR 292 assert(caller_nm->is_method_handle_return(caller_frame.pc())) failed: must be MH call site
Reviewed-by: never, kvn
| author | twisti |
|---|---|
| date | Fri, 24 Sep 2010 03:51:43 -0700 |
| parents | d5d065957597 |
| children | f95d63e2154a |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 1783 | 2 * Copyright (c) 2001, 2010, 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 | |
| 25 #include "incls/_precompiled.incl" | |
| 26 #include "incls/_ciMethodData.cpp.incl" | |
| 27 | |
| 28 // ciMethodData | |
| 29 | |
| 30 // ------------------------------------------------------------------ | |
| 31 // ciMethodData::ciMethodData | |
| 32 // | |
| 33 ciMethodData::ciMethodData(methodDataHandle h_md) : ciObject(h_md) { | |
| 34 assert(h_md() != NULL, "no null method data"); | |
| 35 Copy::zero_to_words((HeapWord*) &_orig, sizeof(_orig) / sizeof(HeapWord)); | |
| 36 _data = NULL; | |
| 37 _data_size = 0; | |
| 38 _extra_data_size = 0; | |
| 39 _current_mileage = 0; | |
| 1783 | 40 _invocation_counter = 0; |
| 41 _backedge_counter = 0; | |
| 0 | 42 _state = empty_state; |
| 43 _saw_free_extra_data = false; | |
| 44 // Set an initial hint. Don't use set_hint_di() because | |
| 45 // first_di() may be out of bounds if data_size is 0. | |
| 46 _hint_di = first_di(); | |
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47 // Initialize the escape information (to "don't know."); |
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48 _eflags = _arg_local = _arg_stack = _arg_returned = 0; |
| 0 | 49 } |
| 50 | |
| 51 // ------------------------------------------------------------------ | |
| 52 // ciMethodData::ciMethodData | |
| 53 // | |
| 54 // No methodDataOop. | |
| 55 ciMethodData::ciMethodData() : ciObject() { | |
| 56 Copy::zero_to_words((HeapWord*) &_orig, sizeof(_orig) / sizeof(HeapWord)); | |
| 57 _data = NULL; | |
| 58 _data_size = 0; | |
| 59 _extra_data_size = 0; | |
| 60 _current_mileage = 0; | |
| 1783 | 61 _invocation_counter = 0; |
| 62 _backedge_counter = 0; | |
| 0 | 63 _state = empty_state; |
| 64 _saw_free_extra_data = false; | |
| 65 // Set an initial hint. Don't use set_hint_di() because | |
| 66 // first_di() may be out of bounds if data_size is 0. | |
| 67 _hint_di = first_di(); | |
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68 // Initialize the escape information (to "don't know."); |
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69 _eflags = _arg_local = _arg_stack = _arg_returned = 0; |
| 0 | 70 } |
| 71 | |
| 72 void ciMethodData::load_data() { | |
| 73 methodDataOop mdo = get_methodDataOop(); | |
| 74 if (mdo == NULL) return; | |
| 75 | |
| 76 // To do: don't copy the data if it is not "ripe" -- require a minimum # | |
| 77 // of invocations. | |
| 78 | |
| 79 // Snapshot the data -- actually, take an approximate snapshot of | |
| 80 // the data. Any concurrently executing threads may be changing the | |
| 81 // data as we copy it. | |
| 82 int skip_header = oopDesc::header_size(); | |
| 83 Copy::disjoint_words((HeapWord*) mdo + skip_header, | |
| 84 (HeapWord*) &_orig + skip_header, | |
| 85 sizeof(_orig) / HeapWordSize - skip_header); | |
| 86 DEBUG_ONLY(*_orig.adr_method() = NULL); // no dangling oops, please | |
| 87 Arena* arena = CURRENT_ENV->arena(); | |
| 88 _data_size = mdo->data_size(); | |
| 89 _extra_data_size = mdo->extra_data_size(); | |
| 90 int total_size = _data_size + _extra_data_size; | |
| 91 _data = (intptr_t *) arena->Amalloc(total_size); | |
| 92 Copy::disjoint_words((HeapWord*) mdo->data_base(), (HeapWord*) _data, total_size / HeapWordSize); | |
| 93 | |
| 94 // Traverse the profile data, translating any oops into their | |
| 95 // ci equivalents. | |
| 96 ResourceMark rm; | |
| 97 ciProfileData* ci_data = first_data(); | |
| 98 ProfileData* data = mdo->first_data(); | |
| 99 while (is_valid(ci_data)) { | |
| 100 ci_data->translate_from(data); | |
| 101 ci_data = next_data(ci_data); | |
| 102 data = mdo->next_data(data); | |
| 103 } | |
| 104 // Note: Extra data are all BitData, and do not need translation. | |
| 105 _current_mileage = methodDataOopDesc::mileage_of(mdo->method()); | |
| 1783 | 106 _invocation_counter = mdo->invocation_count(); |
| 107 _backedge_counter = mdo->backedge_count(); | |
| 0 | 108 _state = mdo->is_mature()? mature_state: immature_state; |
| 109 | |
| 110 _eflags = mdo->eflags(); | |
| 111 _arg_local = mdo->arg_local(); | |
| 112 _arg_stack = mdo->arg_stack(); | |
| 113 _arg_returned = mdo->arg_returned(); | |
| 114 } | |
| 115 | |
| 116 void ciReceiverTypeData::translate_receiver_data_from(ProfileData* data) { | |
| 117 for (uint row = 0; row < row_limit(); row++) { | |
| 118 klassOop k = data->as_ReceiverTypeData()->receiver(row); | |
| 119 if (k != NULL) { | |
| 120 ciKlass* klass = CURRENT_ENV->get_object(k)->as_klass(); | |
| 121 set_receiver(row, klass); | |
| 122 } | |
| 123 } | |
| 124 } | |
| 125 | |
| 126 | |
| 127 // Get the data at an arbitrary (sort of) data index. | |
| 128 ciProfileData* ciMethodData::data_at(int data_index) { | |
| 129 if (out_of_bounds(data_index)) { | |
| 130 return NULL; | |
| 131 } | |
| 132 DataLayout* data_layout = data_layout_at(data_index); | |
| 133 | |
| 134 switch (data_layout->tag()) { | |
| 135 case DataLayout::no_tag: | |
| 136 default: | |
| 137 ShouldNotReachHere(); | |
| 138 return NULL; | |
| 139 case DataLayout::bit_data_tag: | |
| 140 return new ciBitData(data_layout); | |
| 141 case DataLayout::counter_data_tag: | |
| 142 return new ciCounterData(data_layout); | |
| 143 case DataLayout::jump_data_tag: | |
| 144 return new ciJumpData(data_layout); | |
| 145 case DataLayout::receiver_type_data_tag: | |
| 146 return new ciReceiverTypeData(data_layout); | |
| 147 case DataLayout::virtual_call_data_tag: | |
| 148 return new ciVirtualCallData(data_layout); | |
| 149 case DataLayout::ret_data_tag: | |
| 150 return new ciRetData(data_layout); | |
| 151 case DataLayout::branch_data_tag: | |
| 152 return new ciBranchData(data_layout); | |
| 153 case DataLayout::multi_branch_data_tag: | |
| 154 return new ciMultiBranchData(data_layout); | |
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155 case DataLayout::arg_info_data_tag: |
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156 return new ciArgInfoData(data_layout); |
| 0 | 157 }; |
| 158 } | |
| 159 | |
| 160 // Iteration over data. | |
| 161 ciProfileData* ciMethodData::next_data(ciProfileData* current) { | |
| 162 int current_index = dp_to_di(current->dp()); | |
| 163 int next_index = current_index + current->size_in_bytes(); | |
| 164 ciProfileData* next = data_at(next_index); | |
| 165 return next; | |
| 166 } | |
| 167 | |
| 168 // Translate a bci to its corresponding data, or NULL. | |
| 169 ciProfileData* ciMethodData::bci_to_data(int bci) { | |
| 170 ciProfileData* data = data_before(bci); | |
| 171 for ( ; is_valid(data); data = next_data(data)) { | |
| 172 if (data->bci() == bci) { | |
| 173 set_hint_di(dp_to_di(data->dp())); | |
| 174 return data; | |
| 175 } else if (data->bci() > bci) { | |
| 176 break; | |
| 177 } | |
| 178 } | |
| 179 // bci_to_extra_data(bci) ... | |
| 180 DataLayout* dp = data_layout_at(data_size()); | |
| 181 DataLayout* end = data_layout_at(data_size() + extra_data_size()); | |
| 182 for (; dp < end; dp = methodDataOopDesc::next_extra(dp)) { | |
| 183 if (dp->tag() == DataLayout::no_tag) { | |
| 184 _saw_free_extra_data = true; // observed an empty slot (common case) | |
| 185 return NULL; | |
| 186 } | |
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187 if (dp->tag() == DataLayout::arg_info_data_tag) { |
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188 break; // ArgInfoData is at the end of extra data section. |
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189 } |
| 0 | 190 if (dp->bci() == bci) { |
| 191 assert(dp->tag() == DataLayout::bit_data_tag, "sane"); | |
| 192 return new ciBitData(dp); | |
| 193 } | |
| 194 } | |
| 195 return NULL; | |
| 196 } | |
| 197 | |
| 198 // Conservatively decode the trap_state of a ciProfileData. | |
| 199 int ciMethodData::has_trap_at(ciProfileData* data, int reason) { | |
| 200 typedef Deoptimization::DeoptReason DR_t; | |
| 201 int per_bc_reason | |
| 202 = Deoptimization::reason_recorded_per_bytecode_if_any((DR_t) reason); | |
| 203 if (trap_count(reason) == 0) { | |
| 204 // Impossible for this trap to have occurred, regardless of trap_state. | |
| 205 // Note: This happens if the MDO is empty. | |
| 206 return 0; | |
| 207 } else if (per_bc_reason == Deoptimization::Reason_none) { | |
| 208 // We cannot conclude anything; a trap happened somewhere, maybe here. | |
| 209 return -1; | |
| 210 } else if (data == NULL) { | |
| 211 // No profile here, not even an extra_data record allocated on the fly. | |
| 212 // If there are empty extra_data records, and there had been a trap, | |
| 213 // there would have been a non-null data pointer. If there are no | |
| 214 // free extra_data records, we must return a conservative -1. | |
| 215 if (_saw_free_extra_data) | |
| 216 return 0; // Q.E.D. | |
| 217 else | |
| 218 return -1; // bail with a conservative answer | |
| 219 } else { | |
| 220 return Deoptimization::trap_state_has_reason(data->trap_state(), per_bc_reason); | |
| 221 } | |
| 222 } | |
| 223 | |
| 224 int ciMethodData::trap_recompiled_at(ciProfileData* data) { | |
| 225 if (data == NULL) { | |
| 226 return (_saw_free_extra_data? 0: -1); // (see previous method) | |
| 227 } else { | |
| 228 return Deoptimization::trap_state_is_recompiled(data->trap_state())? 1: 0; | |
| 229 } | |
| 230 } | |
| 231 | |
| 232 void ciMethodData::clear_escape_info() { | |
| 233 VM_ENTRY_MARK; | |
| 234 methodDataOop mdo = get_methodDataOop(); | |
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235 if (mdo != NULL) { |
| 0 | 236 mdo->clear_escape_info(); |
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237 ArgInfoData *aid = arg_info(); |
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238 int arg_count = (aid == NULL) ? 0 : aid->number_of_args(); |
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239 for (int i = 0; i < arg_count; i++) { |
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240 set_arg_modified(i, 0); |
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241 } |
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242 } |
| 0 | 243 _eflags = _arg_local = _arg_stack = _arg_returned = 0; |
| 244 } | |
| 245 | |
| 246 // copy our escape info to the methodDataOop if it exists | |
| 247 void ciMethodData::update_escape_info() { | |
| 248 VM_ENTRY_MARK; | |
| 249 methodDataOop mdo = get_methodDataOop(); | |
| 250 if ( mdo != NULL) { | |
| 251 mdo->set_eflags(_eflags); | |
| 252 mdo->set_arg_local(_arg_local); | |
| 253 mdo->set_arg_stack(_arg_stack); | |
| 254 mdo->set_arg_returned(_arg_returned); | |
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255 int arg_count = mdo->method()->size_of_parameters(); |
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256 for (int i = 0; i < arg_count; i++) { |
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257 mdo->set_arg_modified(i, arg_modified(i)); |
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258 } |
| 0 | 259 } |
| 260 } | |
| 261 | |
| 1783 | 262 void ciMethodData::set_compilation_stats(short loops, short blocks) { |
| 263 VM_ENTRY_MARK; | |
| 264 methodDataOop mdo = get_methodDataOop(); | |
| 265 if (mdo != NULL) { | |
| 266 mdo->set_num_loops(loops); | |
| 267 mdo->set_num_blocks(blocks); | |
| 268 } | |
| 269 } | |
| 270 | |
| 271 void ciMethodData::set_would_profile(bool p) { | |
| 272 VM_ENTRY_MARK; | |
| 273 methodDataOop mdo = get_methodDataOop(); | |
| 274 if (mdo != NULL) { | |
| 275 mdo->set_would_profile(p); | |
| 276 } | |
| 277 } | |
| 278 | |
| 0 | 279 bool ciMethodData::has_escape_info() { |
| 280 return eflag_set(methodDataOopDesc::estimated); | |
| 281 } | |
| 282 | |
| 283 void ciMethodData::set_eflag(methodDataOopDesc::EscapeFlag f) { | |
| 284 set_bits(_eflags, f); | |
| 285 } | |
| 286 | |
| 287 void ciMethodData::clear_eflag(methodDataOopDesc::EscapeFlag f) { | |
| 288 clear_bits(_eflags, f); | |
| 289 } | |
| 290 | |
| 291 bool ciMethodData::eflag_set(methodDataOopDesc::EscapeFlag f) const { | |
| 292 return mask_bits(_eflags, f) != 0; | |
| 293 } | |
| 294 | |
| 295 void ciMethodData::set_arg_local(int i) { | |
| 296 set_nth_bit(_arg_local, i); | |
| 297 } | |
| 298 | |
| 299 void ciMethodData::set_arg_stack(int i) { | |
| 300 set_nth_bit(_arg_stack, i); | |
| 301 } | |
| 302 | |
| 303 void ciMethodData::set_arg_returned(int i) { | |
| 304 set_nth_bit(_arg_returned, i); | |
| 305 } | |
| 306 | |
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307 void ciMethodData::set_arg_modified(int arg, uint val) { |
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308 ArgInfoData *aid = arg_info(); |
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309 if (aid == NULL) |
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310 return; |
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311 assert(arg >= 0 && arg < aid->number_of_args(), "valid argument number"); |
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312 aid->set_arg_modified(arg, val); |
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313 } |
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314 |
| 0 | 315 bool ciMethodData::is_arg_local(int i) const { |
| 316 return is_set_nth_bit(_arg_local, i); | |
| 317 } | |
| 318 | |
| 319 bool ciMethodData::is_arg_stack(int i) const { | |
| 320 return is_set_nth_bit(_arg_stack, i); | |
| 321 } | |
| 322 | |
| 323 bool ciMethodData::is_arg_returned(int i) const { | |
| 324 return is_set_nth_bit(_arg_returned, i); | |
| 325 } | |
| 326 | |
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327 uint ciMethodData::arg_modified(int arg) const { |
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328 ArgInfoData *aid = arg_info(); |
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329 if (aid == NULL) |
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330 return 0; |
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331 assert(arg >= 0 && arg < aid->number_of_args(), "valid argument number"); |
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332 return aid->arg_modified(arg); |
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333 } |
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334 |
| 0 | 335 ByteSize ciMethodData::offset_of_slot(ciProfileData* data, ByteSize slot_offset_in_data) { |
| 336 // Get offset within methodDataOop of the data array | |
| 337 ByteSize data_offset = methodDataOopDesc::data_offset(); | |
| 338 | |
| 339 // Get cell offset of the ProfileData within data array | |
| 340 int cell_offset = dp_to_di(data->dp()); | |
| 341 | |
| 342 // Add in counter_offset, the # of bytes into the ProfileData of counter or flag | |
| 343 int offset = in_bytes(data_offset) + cell_offset + in_bytes(slot_offset_in_data); | |
| 344 | |
| 345 return in_ByteSize(offset); | |
| 346 } | |
| 347 | |
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348 ciArgInfoData *ciMethodData::arg_info() const { |
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349 // Should be last, have to skip all traps. |
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350 DataLayout* dp = data_layout_at(data_size()); |
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351 DataLayout* end = data_layout_at(data_size() + extra_data_size()); |
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352 for (; dp < end; dp = methodDataOopDesc::next_extra(dp)) { |
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353 if (dp->tag() == DataLayout::arg_info_data_tag) |
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354 return new ciArgInfoData(dp); |
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355 } |
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356 return NULL; |
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357 } |
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358 |
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359 |
| 0 | 360 // Implementation of the print method. |
| 361 void ciMethodData::print_impl(outputStream* st) { | |
| 362 ciObject::print_impl(st); | |
| 363 } | |
| 364 | |
| 365 #ifndef PRODUCT | |
| 366 void ciMethodData::print() { | |
| 367 print_data_on(tty); | |
| 368 } | |
| 369 | |
| 370 void ciMethodData::print_data_on(outputStream* st) { | |
| 371 ResourceMark rm; | |
| 372 ciProfileData* data; | |
| 373 for (data = first_data(); is_valid(data); data = next_data(data)) { | |
| 374 st->print("%d", dp_to_di(data->dp())); | |
| 375 st->fill_to(6); | |
| 376 data->print_data_on(st); | |
| 377 } | |
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378 st->print_cr("--- Extra data:"); |
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379 DataLayout* dp = data_layout_at(data_size()); |
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380 DataLayout* end = data_layout_at(data_size() + extra_data_size()); |
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381 for (; dp < end; dp = methodDataOopDesc::next_extra(dp)) { |
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382 if (dp->tag() == DataLayout::no_tag) continue; |
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383 if (dp->tag() == DataLayout::bit_data_tag) { |
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384 data = new BitData(dp); |
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385 } else { |
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386 assert(dp->tag() == DataLayout::arg_info_data_tag, "must be BitData or ArgInfo"); |
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387 data = new ciArgInfoData(dp); |
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388 dp = end; // ArgInfoData is at the end of extra data section. |
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389 } |
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390 st->print("%d", dp_to_di(data->dp())); |
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391 st->fill_to(6); |
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392 data->print_data_on(st); |
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393 } |
| 0 | 394 } |
| 395 | |
| 396 void ciReceiverTypeData::print_receiver_data_on(outputStream* st) { | |
| 397 uint row; | |
| 398 int entries = 0; | |
| 399 for (row = 0; row < row_limit(); row++) { | |
| 400 if (receiver(row) != NULL) entries++; | |
| 401 } | |
| 402 st->print_cr("count(%u) entries(%u)", count(), entries); | |
| 403 for (row = 0; row < row_limit(); row++) { | |
| 404 if (receiver(row) != NULL) { | |
| 405 tab(st); | |
| 406 receiver(row)->print_name_on(st); | |
| 407 st->print_cr("(%u)", receiver_count(row)); | |
| 408 } | |
| 409 } | |
| 410 } | |
| 411 | |
| 412 void ciReceiverTypeData::print_data_on(outputStream* st) { | |
| 413 print_shared(st, "ciReceiverTypeData"); | |
| 414 print_receiver_data_on(st); | |
| 415 } | |
| 416 | |
| 417 void ciVirtualCallData::print_data_on(outputStream* st) { | |
| 418 print_shared(st, "ciVirtualCallData"); | |
| 419 rtd_super()->print_receiver_data_on(st); | |
| 420 } | |
| 421 #endif |