Mercurial > hg > truffle
annotate src/share/vm/ci/ciMethodData.cpp @ 1972:f95d63e2154a
6989984: Use standard include model for Hospot
Summary: Replaced MakeDeps and the includeDB files with more standardized solutions.
Reviewed-by: coleenp, kvn, kamg
| author | stefank |
|---|---|
| date | Tue, 23 Nov 2010 13:22:55 -0800 |
| parents | d5d065957597 |
| children | da91efe96a93 |
| 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 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "ci/ciMethodData.hpp" | |
| 27 #include "ci/ciUtilities.hpp" | |
| 28 #include "memory/allocation.inline.hpp" | |
| 29 #include "memory/resourceArea.hpp" | |
| 30 #include "runtime/deoptimization.hpp" | |
| 31 #include "utilities/copy.hpp" | |
| 0 | 32 |
| 33 // ciMethodData | |
| 34 | |
| 35 // ------------------------------------------------------------------ | |
| 36 // ciMethodData::ciMethodData | |
| 37 // | |
| 38 ciMethodData::ciMethodData(methodDataHandle h_md) : ciObject(h_md) { | |
| 39 assert(h_md() != NULL, "no null method data"); | |
| 40 Copy::zero_to_words((HeapWord*) &_orig, sizeof(_orig) / sizeof(HeapWord)); | |
| 41 _data = NULL; | |
| 42 _data_size = 0; | |
| 43 _extra_data_size = 0; | |
| 44 _current_mileage = 0; | |
| 1783 | 45 _invocation_counter = 0; |
| 46 _backedge_counter = 0; | |
| 0 | 47 _state = empty_state; |
| 48 _saw_free_extra_data = false; | |
| 49 // Set an initial hint. Don't use set_hint_di() because | |
| 50 // first_di() may be out of bounds if data_size is 0. | |
| 51 _hint_di = first_di(); | |
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52 // Initialize the escape information (to "don't know."); |
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53 _eflags = _arg_local = _arg_stack = _arg_returned = 0; |
| 0 | 54 } |
| 55 | |
| 56 // ------------------------------------------------------------------ | |
| 57 // ciMethodData::ciMethodData | |
| 58 // | |
| 59 // No methodDataOop. | |
| 60 ciMethodData::ciMethodData() : ciObject() { | |
| 61 Copy::zero_to_words((HeapWord*) &_orig, sizeof(_orig) / sizeof(HeapWord)); | |
| 62 _data = NULL; | |
| 63 _data_size = 0; | |
| 64 _extra_data_size = 0; | |
| 65 _current_mileage = 0; | |
| 1783 | 66 _invocation_counter = 0; |
| 67 _backedge_counter = 0; | |
| 0 | 68 _state = empty_state; |
| 69 _saw_free_extra_data = false; | |
| 70 // Set an initial hint. Don't use set_hint_di() because | |
| 71 // first_di() may be out of bounds if data_size is 0. | |
| 72 _hint_di = first_di(); | |
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73 // Initialize the escape information (to "don't know."); |
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74 _eflags = _arg_local = _arg_stack = _arg_returned = 0; |
| 0 | 75 } |
| 76 | |
| 77 void ciMethodData::load_data() { | |
| 78 methodDataOop mdo = get_methodDataOop(); | |
| 79 if (mdo == NULL) return; | |
| 80 | |
| 81 // To do: don't copy the data if it is not "ripe" -- require a minimum # | |
| 82 // of invocations. | |
| 83 | |
| 84 // Snapshot the data -- actually, take an approximate snapshot of | |
| 85 // the data. Any concurrently executing threads may be changing the | |
| 86 // data as we copy it. | |
| 87 int skip_header = oopDesc::header_size(); | |
| 88 Copy::disjoint_words((HeapWord*) mdo + skip_header, | |
| 89 (HeapWord*) &_orig + skip_header, | |
| 90 sizeof(_orig) / HeapWordSize - skip_header); | |
| 91 DEBUG_ONLY(*_orig.adr_method() = NULL); // no dangling oops, please | |
| 92 Arena* arena = CURRENT_ENV->arena(); | |
| 93 _data_size = mdo->data_size(); | |
| 94 _extra_data_size = mdo->extra_data_size(); | |
| 95 int total_size = _data_size + _extra_data_size; | |
| 96 _data = (intptr_t *) arena->Amalloc(total_size); | |
| 97 Copy::disjoint_words((HeapWord*) mdo->data_base(), (HeapWord*) _data, total_size / HeapWordSize); | |
| 98 | |
| 99 // Traverse the profile data, translating any oops into their | |
| 100 // ci equivalents. | |
| 101 ResourceMark rm; | |
| 102 ciProfileData* ci_data = first_data(); | |
| 103 ProfileData* data = mdo->first_data(); | |
| 104 while (is_valid(ci_data)) { | |
| 105 ci_data->translate_from(data); | |
| 106 ci_data = next_data(ci_data); | |
| 107 data = mdo->next_data(data); | |
| 108 } | |
| 109 // Note: Extra data are all BitData, and do not need translation. | |
| 110 _current_mileage = methodDataOopDesc::mileage_of(mdo->method()); | |
| 1783 | 111 _invocation_counter = mdo->invocation_count(); |
| 112 _backedge_counter = mdo->backedge_count(); | |
| 0 | 113 _state = mdo->is_mature()? mature_state: immature_state; |
| 114 | |
| 115 _eflags = mdo->eflags(); | |
| 116 _arg_local = mdo->arg_local(); | |
| 117 _arg_stack = mdo->arg_stack(); | |
| 118 _arg_returned = mdo->arg_returned(); | |
| 119 } | |
| 120 | |
| 121 void ciReceiverTypeData::translate_receiver_data_from(ProfileData* data) { | |
| 122 for (uint row = 0; row < row_limit(); row++) { | |
| 123 klassOop k = data->as_ReceiverTypeData()->receiver(row); | |
| 124 if (k != NULL) { | |
| 125 ciKlass* klass = CURRENT_ENV->get_object(k)->as_klass(); | |
| 126 set_receiver(row, klass); | |
| 127 } | |
| 128 } | |
| 129 } | |
| 130 | |
| 131 | |
| 132 // Get the data at an arbitrary (sort of) data index. | |
| 133 ciProfileData* ciMethodData::data_at(int data_index) { | |
| 134 if (out_of_bounds(data_index)) { | |
| 135 return NULL; | |
| 136 } | |
| 137 DataLayout* data_layout = data_layout_at(data_index); | |
| 138 | |
| 139 switch (data_layout->tag()) { | |
| 140 case DataLayout::no_tag: | |
| 141 default: | |
| 142 ShouldNotReachHere(); | |
| 143 return NULL; | |
| 144 case DataLayout::bit_data_tag: | |
| 145 return new ciBitData(data_layout); | |
| 146 case DataLayout::counter_data_tag: | |
| 147 return new ciCounterData(data_layout); | |
| 148 case DataLayout::jump_data_tag: | |
| 149 return new ciJumpData(data_layout); | |
| 150 case DataLayout::receiver_type_data_tag: | |
| 151 return new ciReceiverTypeData(data_layout); | |
| 152 case DataLayout::virtual_call_data_tag: | |
| 153 return new ciVirtualCallData(data_layout); | |
| 154 case DataLayout::ret_data_tag: | |
| 155 return new ciRetData(data_layout); | |
| 156 case DataLayout::branch_data_tag: | |
| 157 return new ciBranchData(data_layout); | |
| 158 case DataLayout::multi_branch_data_tag: | |
| 159 return new ciMultiBranchData(data_layout); | |
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160 case DataLayout::arg_info_data_tag: |
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161 return new ciArgInfoData(data_layout); |
| 0 | 162 }; |
| 163 } | |
| 164 | |
| 165 // Iteration over data. | |
| 166 ciProfileData* ciMethodData::next_data(ciProfileData* current) { | |
| 167 int current_index = dp_to_di(current->dp()); | |
| 168 int next_index = current_index + current->size_in_bytes(); | |
| 169 ciProfileData* next = data_at(next_index); | |
| 170 return next; | |
| 171 } | |
| 172 | |
| 173 // Translate a bci to its corresponding data, or NULL. | |
| 174 ciProfileData* ciMethodData::bci_to_data(int bci) { | |
| 175 ciProfileData* data = data_before(bci); | |
| 176 for ( ; is_valid(data); data = next_data(data)) { | |
| 177 if (data->bci() == bci) { | |
| 178 set_hint_di(dp_to_di(data->dp())); | |
| 179 return data; | |
| 180 } else if (data->bci() > bci) { | |
| 181 break; | |
| 182 } | |
| 183 } | |
| 184 // bci_to_extra_data(bci) ... | |
| 185 DataLayout* dp = data_layout_at(data_size()); | |
| 186 DataLayout* end = data_layout_at(data_size() + extra_data_size()); | |
| 187 for (; dp < end; dp = methodDataOopDesc::next_extra(dp)) { | |
| 188 if (dp->tag() == DataLayout::no_tag) { | |
| 189 _saw_free_extra_data = true; // observed an empty slot (common case) | |
| 190 return NULL; | |
| 191 } | |
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192 if (dp->tag() == DataLayout::arg_info_data_tag) { |
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193 break; // ArgInfoData is at the end of extra data section. |
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194 } |
| 0 | 195 if (dp->bci() == bci) { |
| 196 assert(dp->tag() == DataLayout::bit_data_tag, "sane"); | |
| 197 return new ciBitData(dp); | |
| 198 } | |
| 199 } | |
| 200 return NULL; | |
| 201 } | |
| 202 | |
| 203 // Conservatively decode the trap_state of a ciProfileData. | |
| 204 int ciMethodData::has_trap_at(ciProfileData* data, int reason) { | |
| 205 typedef Deoptimization::DeoptReason DR_t; | |
| 206 int per_bc_reason | |
| 207 = Deoptimization::reason_recorded_per_bytecode_if_any((DR_t) reason); | |
| 208 if (trap_count(reason) == 0) { | |
| 209 // Impossible for this trap to have occurred, regardless of trap_state. | |
| 210 // Note: This happens if the MDO is empty. | |
| 211 return 0; | |
| 212 } else if (per_bc_reason == Deoptimization::Reason_none) { | |
| 213 // We cannot conclude anything; a trap happened somewhere, maybe here. | |
| 214 return -1; | |
| 215 } else if (data == NULL) { | |
| 216 // No profile here, not even an extra_data record allocated on the fly. | |
| 217 // If there are empty extra_data records, and there had been a trap, | |
| 218 // there would have been a non-null data pointer. If there are no | |
| 219 // free extra_data records, we must return a conservative -1. | |
| 220 if (_saw_free_extra_data) | |
| 221 return 0; // Q.E.D. | |
| 222 else | |
| 223 return -1; // bail with a conservative answer | |
| 224 } else { | |
| 225 return Deoptimization::trap_state_has_reason(data->trap_state(), per_bc_reason); | |
| 226 } | |
| 227 } | |
| 228 | |
| 229 int ciMethodData::trap_recompiled_at(ciProfileData* data) { | |
| 230 if (data == NULL) { | |
| 231 return (_saw_free_extra_data? 0: -1); // (see previous method) | |
| 232 } else { | |
| 233 return Deoptimization::trap_state_is_recompiled(data->trap_state())? 1: 0; | |
| 234 } | |
| 235 } | |
| 236 | |
| 237 void ciMethodData::clear_escape_info() { | |
| 238 VM_ENTRY_MARK; | |
| 239 methodDataOop mdo = get_methodDataOop(); | |
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240 if (mdo != NULL) { |
| 0 | 241 mdo->clear_escape_info(); |
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242 ArgInfoData *aid = arg_info(); |
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243 int arg_count = (aid == NULL) ? 0 : aid->number_of_args(); |
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244 for (int i = 0; i < arg_count; i++) { |
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245 set_arg_modified(i, 0); |
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246 } |
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247 } |
| 0 | 248 _eflags = _arg_local = _arg_stack = _arg_returned = 0; |
| 249 } | |
| 250 | |
| 251 // copy our escape info to the methodDataOop if it exists | |
| 252 void ciMethodData::update_escape_info() { | |
| 253 VM_ENTRY_MARK; | |
| 254 methodDataOop mdo = get_methodDataOop(); | |
| 255 if ( mdo != NULL) { | |
| 256 mdo->set_eflags(_eflags); | |
| 257 mdo->set_arg_local(_arg_local); | |
| 258 mdo->set_arg_stack(_arg_stack); | |
| 259 mdo->set_arg_returned(_arg_returned); | |
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260 int arg_count = mdo->method()->size_of_parameters(); |
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261 for (int i = 0; i < arg_count; i++) { |
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262 mdo->set_arg_modified(i, arg_modified(i)); |
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263 } |
| 0 | 264 } |
| 265 } | |
| 266 | |
| 1783 | 267 void ciMethodData::set_compilation_stats(short loops, short blocks) { |
| 268 VM_ENTRY_MARK; | |
| 269 methodDataOop mdo = get_methodDataOop(); | |
| 270 if (mdo != NULL) { | |
| 271 mdo->set_num_loops(loops); | |
| 272 mdo->set_num_blocks(blocks); | |
| 273 } | |
| 274 } | |
| 275 | |
| 276 void ciMethodData::set_would_profile(bool p) { | |
| 277 VM_ENTRY_MARK; | |
| 278 methodDataOop mdo = get_methodDataOop(); | |
| 279 if (mdo != NULL) { | |
| 280 mdo->set_would_profile(p); | |
| 281 } | |
| 282 } | |
| 283 | |
| 0 | 284 bool ciMethodData::has_escape_info() { |
| 285 return eflag_set(methodDataOopDesc::estimated); | |
| 286 } | |
| 287 | |
| 288 void ciMethodData::set_eflag(methodDataOopDesc::EscapeFlag f) { | |
| 289 set_bits(_eflags, f); | |
| 290 } | |
| 291 | |
| 292 void ciMethodData::clear_eflag(methodDataOopDesc::EscapeFlag f) { | |
| 293 clear_bits(_eflags, f); | |
| 294 } | |
| 295 | |
| 296 bool ciMethodData::eflag_set(methodDataOopDesc::EscapeFlag f) const { | |
| 297 return mask_bits(_eflags, f) != 0; | |
| 298 } | |
| 299 | |
| 300 void ciMethodData::set_arg_local(int i) { | |
| 301 set_nth_bit(_arg_local, i); | |
| 302 } | |
| 303 | |
| 304 void ciMethodData::set_arg_stack(int i) { | |
| 305 set_nth_bit(_arg_stack, i); | |
| 306 } | |
| 307 | |
| 308 void ciMethodData::set_arg_returned(int i) { | |
| 309 set_nth_bit(_arg_returned, i); | |
| 310 } | |
| 311 | |
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312 void ciMethodData::set_arg_modified(int arg, uint val) { |
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313 ArgInfoData *aid = arg_info(); |
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314 if (aid == NULL) |
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315 return; |
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316 assert(arg >= 0 && arg < aid->number_of_args(), "valid argument number"); |
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317 aid->set_arg_modified(arg, val); |
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318 } |
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319 |
| 0 | 320 bool ciMethodData::is_arg_local(int i) const { |
| 321 return is_set_nth_bit(_arg_local, i); | |
| 322 } | |
| 323 | |
| 324 bool ciMethodData::is_arg_stack(int i) const { | |
| 325 return is_set_nth_bit(_arg_stack, i); | |
| 326 } | |
| 327 | |
| 328 bool ciMethodData::is_arg_returned(int i) const { | |
| 329 return is_set_nth_bit(_arg_returned, i); | |
| 330 } | |
| 331 | |
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332 uint ciMethodData::arg_modified(int arg) const { |
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333 ArgInfoData *aid = arg_info(); |
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334 if (aid == NULL) |
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335 return 0; |
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336 assert(arg >= 0 && arg < aid->number_of_args(), "valid argument number"); |
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337 return aid->arg_modified(arg); |
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338 } |
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339 |
| 0 | 340 ByteSize ciMethodData::offset_of_slot(ciProfileData* data, ByteSize slot_offset_in_data) { |
| 341 // Get offset within methodDataOop of the data array | |
| 342 ByteSize data_offset = methodDataOopDesc::data_offset(); | |
| 343 | |
| 344 // Get cell offset of the ProfileData within data array | |
| 345 int cell_offset = dp_to_di(data->dp()); | |
| 346 | |
| 347 // Add in counter_offset, the # of bytes into the ProfileData of counter or flag | |
| 348 int offset = in_bytes(data_offset) + cell_offset + in_bytes(slot_offset_in_data); | |
| 349 | |
| 350 return in_ByteSize(offset); | |
| 351 } | |
| 352 | |
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353 ciArgInfoData *ciMethodData::arg_info() const { |
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354 // Should be last, have to skip all traps. |
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355 DataLayout* dp = data_layout_at(data_size()); |
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356 DataLayout* end = data_layout_at(data_size() + extra_data_size()); |
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357 for (; dp < end; dp = methodDataOopDesc::next_extra(dp)) { |
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358 if (dp->tag() == DataLayout::arg_info_data_tag) |
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359 return new ciArgInfoData(dp); |
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360 } |
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361 return NULL; |
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362 } |
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363 |
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364 |
| 0 | 365 // Implementation of the print method. |
| 366 void ciMethodData::print_impl(outputStream* st) { | |
| 367 ciObject::print_impl(st); | |
| 368 } | |
| 369 | |
| 370 #ifndef PRODUCT | |
| 371 void ciMethodData::print() { | |
| 372 print_data_on(tty); | |
| 373 } | |
| 374 | |
| 375 void ciMethodData::print_data_on(outputStream* st) { | |
| 376 ResourceMark rm; | |
| 377 ciProfileData* data; | |
| 378 for (data = first_data(); is_valid(data); data = next_data(data)) { | |
| 379 st->print("%d", dp_to_di(data->dp())); | |
| 380 st->fill_to(6); | |
| 381 data->print_data_on(st); | |
| 382 } | |
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383 st->print_cr("--- Extra data:"); |
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384 DataLayout* dp = data_layout_at(data_size()); |
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385 DataLayout* end = data_layout_at(data_size() + extra_data_size()); |
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386 for (; dp < end; dp = methodDataOopDesc::next_extra(dp)) { |
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387 if (dp->tag() == DataLayout::no_tag) continue; |
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388 if (dp->tag() == DataLayout::bit_data_tag) { |
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389 data = new BitData(dp); |
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390 } else { |
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391 assert(dp->tag() == DataLayout::arg_info_data_tag, "must be BitData or ArgInfo"); |
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392 data = new ciArgInfoData(dp); |
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393 dp = end; // ArgInfoData is at the end of extra data section. |
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394 } |
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395 st->print("%d", dp_to_di(data->dp())); |
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396 st->fill_to(6); |
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397 data->print_data_on(st); |
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398 } |
| 0 | 399 } |
| 400 | |
| 401 void ciReceiverTypeData::print_receiver_data_on(outputStream* st) { | |
| 402 uint row; | |
| 403 int entries = 0; | |
| 404 for (row = 0; row < row_limit(); row++) { | |
| 405 if (receiver(row) != NULL) entries++; | |
| 406 } | |
| 407 st->print_cr("count(%u) entries(%u)", count(), entries); | |
| 408 for (row = 0; row < row_limit(); row++) { | |
| 409 if (receiver(row) != NULL) { | |
| 410 tab(st); | |
| 411 receiver(row)->print_name_on(st); | |
| 412 st->print_cr("(%u)", receiver_count(row)); | |
| 413 } | |
| 414 } | |
| 415 } | |
| 416 | |
| 417 void ciReceiverTypeData::print_data_on(outputStream* st) { | |
| 418 print_shared(st, "ciReceiverTypeData"); | |
| 419 print_receiver_data_on(st); | |
| 420 } | |
| 421 | |
| 422 void ciVirtualCallData::print_data_on(outputStream* st) { | |
| 423 print_shared(st, "ciVirtualCallData"); | |
| 424 rtd_super()->print_receiver_data_on(st); | |
| 425 } | |
| 426 #endif |