Mercurial > hg > truffle
annotate src/share/vm/ci/ciMethodData.cpp @ 12160:f98f5d48f511
7199175: JSR 292: C1 needs patching when invokedynamic/invokehandle call site is not linked
Summary: Do patching rather bailing out for unlinked call with appendix
Reviewed-by: twisti, kvn
| author | roland |
|---|---|
| date | Wed, 21 Aug 2013 13:34:45 +0200 |
| parents | fcc9e7681d63 |
| children | 5cc2d82aa82a |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2001, 2012, 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" |
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26 #include "ci/ciMetadata.hpp" |
| 1972 | 27 #include "ci/ciMethodData.hpp" |
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28 #include "ci/ciReplay.hpp" |
| 1972 | 29 #include "ci/ciUtilities.hpp" |
| 30 #include "memory/allocation.inline.hpp" | |
| 31 #include "memory/resourceArea.hpp" | |
| 32 #include "runtime/deoptimization.hpp" | |
| 33 #include "utilities/copy.hpp" | |
| 0 | 34 |
| 35 // ciMethodData | |
| 36 | |
| 37 // ------------------------------------------------------------------ | |
| 38 // ciMethodData::ciMethodData | |
| 39 // | |
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40 ciMethodData::ciMethodData(MethodData* md) : ciMetadata(md) { |
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41 assert(md != NULL, "no null method data"); |
| 0 | 42 Copy::zero_to_words((HeapWord*) &_orig, sizeof(_orig) / sizeof(HeapWord)); |
| 43 _data = NULL; | |
| 44 _data_size = 0; | |
| 45 _extra_data_size = 0; | |
| 46 _current_mileage = 0; | |
| 1783 | 47 _invocation_counter = 0; |
| 48 _backedge_counter = 0; | |
| 0 | 49 _state = empty_state; |
| 50 _saw_free_extra_data = false; | |
| 51 // Set an initial hint. Don't use set_hint_di() because | |
| 52 // first_di() may be out of bounds if data_size is 0. | |
| 53 _hint_di = first_di(); | |
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54 // Initialize the escape information (to "don't know."); |
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55 _eflags = _arg_local = _arg_stack = _arg_returned = 0; |
| 0 | 56 } |
| 57 | |
| 58 // ------------------------------------------------------------------ | |
| 59 // ciMethodData::ciMethodData | |
| 60 // | |
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61 // No MethodData*. |
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62 ciMethodData::ciMethodData() : ciMetadata(NULL) { |
| 0 | 63 Copy::zero_to_words((HeapWord*) &_orig, sizeof(_orig) / sizeof(HeapWord)); |
| 64 _data = NULL; | |
| 65 _data_size = 0; | |
| 66 _extra_data_size = 0; | |
| 67 _current_mileage = 0; | |
| 1783 | 68 _invocation_counter = 0; |
| 69 _backedge_counter = 0; | |
| 0 | 70 _state = empty_state; |
| 71 _saw_free_extra_data = false; | |
| 72 // Set an initial hint. Don't use set_hint_di() because | |
| 73 // first_di() may be out of bounds if data_size is 0. | |
| 74 _hint_di = first_di(); | |
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75 // Initialize the escape information (to "don't know."); |
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76 _eflags = _arg_local = _arg_stack = _arg_returned = 0; |
| 0 | 77 } |
| 78 | |
| 79 void ciMethodData::load_data() { | |
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80 MethodData* mdo = get_MethodData(); |
| 0 | 81 if (mdo == NULL) return; |
| 82 | |
| 83 // To do: don't copy the data if it is not "ripe" -- require a minimum # | |
| 84 // of invocations. | |
| 85 | |
| 86 // Snapshot the data -- actually, take an approximate snapshot of | |
| 87 // the data. Any concurrently executing threads may be changing the | |
| 88 // data as we copy it. | |
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89 Copy::disjoint_words((HeapWord*) mdo, |
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90 (HeapWord*) &_orig, |
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91 sizeof(_orig) / HeapWordSize); |
| 0 | 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. | |
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110 _current_mileage = MethodData::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(); | |
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119 #ifndef PRODUCT |
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120 if (ReplayCompiles) { |
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121 ciReplay::initialize(this); |
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122 } |
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123 #endif |
| 0 | 124 } |
| 125 | |
| 126 void ciReceiverTypeData::translate_receiver_data_from(ProfileData* data) { | |
| 127 for (uint row = 0; row < row_limit(); row++) { | |
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128 Klass* k = data->as_ReceiverTypeData()->receiver(row); |
| 0 | 129 if (k != NULL) { |
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130 ciKlass* klass = CURRENT_ENV->get_klass(k); |
| 0 | 131 set_receiver(row, klass); |
| 132 } | |
| 133 } | |
| 134 } | |
| 135 | |
| 136 | |
| 137 // Get the data at an arbitrary (sort of) data index. | |
| 138 ciProfileData* ciMethodData::data_at(int data_index) { | |
| 139 if (out_of_bounds(data_index)) { | |
| 140 return NULL; | |
| 141 } | |
| 142 DataLayout* data_layout = data_layout_at(data_index); | |
| 143 | |
| 144 switch (data_layout->tag()) { | |
| 145 case DataLayout::no_tag: | |
| 146 default: | |
| 147 ShouldNotReachHere(); | |
| 148 return NULL; | |
| 149 case DataLayout::bit_data_tag: | |
| 150 return new ciBitData(data_layout); | |
| 151 case DataLayout::counter_data_tag: | |
| 152 return new ciCounterData(data_layout); | |
| 153 case DataLayout::jump_data_tag: | |
| 154 return new ciJumpData(data_layout); | |
| 155 case DataLayout::receiver_type_data_tag: | |
| 156 return new ciReceiverTypeData(data_layout); | |
| 157 case DataLayout::virtual_call_data_tag: | |
| 158 return new ciVirtualCallData(data_layout); | |
| 159 case DataLayout::ret_data_tag: | |
| 160 return new ciRetData(data_layout); | |
| 161 case DataLayout::branch_data_tag: | |
| 162 return new ciBranchData(data_layout); | |
| 163 case DataLayout::multi_branch_data_tag: | |
| 164 return new ciMultiBranchData(data_layout); | |
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165 case DataLayout::arg_info_data_tag: |
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166 return new ciArgInfoData(data_layout); |
| 0 | 167 }; |
| 168 } | |
| 169 | |
| 170 // Iteration over data. | |
| 171 ciProfileData* ciMethodData::next_data(ciProfileData* current) { | |
| 172 int current_index = dp_to_di(current->dp()); | |
| 173 int next_index = current_index + current->size_in_bytes(); | |
| 174 ciProfileData* next = data_at(next_index); | |
| 175 return next; | |
| 176 } | |
| 177 | |
| 178 // Translate a bci to its corresponding data, or NULL. | |
| 179 ciProfileData* ciMethodData::bci_to_data(int bci) { | |
| 180 ciProfileData* data = data_before(bci); | |
| 181 for ( ; is_valid(data); data = next_data(data)) { | |
| 182 if (data->bci() == bci) { | |
| 183 set_hint_di(dp_to_di(data->dp())); | |
| 184 return data; | |
| 185 } else if (data->bci() > bci) { | |
| 186 break; | |
| 187 } | |
| 188 } | |
| 189 // bci_to_extra_data(bci) ... | |
| 190 DataLayout* dp = data_layout_at(data_size()); | |
| 191 DataLayout* end = data_layout_at(data_size() + extra_data_size()); | |
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192 for (; dp < end; dp = MethodData::next_extra(dp)) { |
| 0 | 193 if (dp->tag() == DataLayout::no_tag) { |
| 194 _saw_free_extra_data = true; // observed an empty slot (common case) | |
| 195 return NULL; | |
| 196 } | |
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197 if (dp->tag() == DataLayout::arg_info_data_tag) { |
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198 break; // ArgInfoData is at the end of extra data section. |
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199 } |
| 0 | 200 if (dp->bci() == bci) { |
| 201 assert(dp->tag() == DataLayout::bit_data_tag, "sane"); | |
| 202 return new ciBitData(dp); | |
| 203 } | |
| 204 } | |
| 205 return NULL; | |
| 206 } | |
| 207 | |
| 208 // Conservatively decode the trap_state of a ciProfileData. | |
| 209 int ciMethodData::has_trap_at(ciProfileData* data, int reason) { | |
| 210 typedef Deoptimization::DeoptReason DR_t; | |
| 211 int per_bc_reason | |
| 212 = Deoptimization::reason_recorded_per_bytecode_if_any((DR_t) reason); | |
| 213 if (trap_count(reason) == 0) { | |
| 214 // Impossible for this trap to have occurred, regardless of trap_state. | |
| 215 // Note: This happens if the MDO is empty. | |
| 216 return 0; | |
| 217 } else if (per_bc_reason == Deoptimization::Reason_none) { | |
| 218 // We cannot conclude anything; a trap happened somewhere, maybe here. | |
| 219 return -1; | |
| 220 } else if (data == NULL) { | |
| 221 // No profile here, not even an extra_data record allocated on the fly. | |
| 222 // If there are empty extra_data records, and there had been a trap, | |
| 223 // there would have been a non-null data pointer. If there are no | |
| 224 // free extra_data records, we must return a conservative -1. | |
| 225 if (_saw_free_extra_data) | |
| 226 return 0; // Q.E.D. | |
| 227 else | |
| 228 return -1; // bail with a conservative answer | |
| 229 } else { | |
| 230 return Deoptimization::trap_state_has_reason(data->trap_state(), per_bc_reason); | |
| 231 } | |
| 232 } | |
| 233 | |
| 234 int ciMethodData::trap_recompiled_at(ciProfileData* data) { | |
| 235 if (data == NULL) { | |
| 236 return (_saw_free_extra_data? 0: -1); // (see previous method) | |
| 237 } else { | |
| 238 return Deoptimization::trap_state_is_recompiled(data->trap_state())? 1: 0; | |
| 239 } | |
| 240 } | |
| 241 | |
| 242 void ciMethodData::clear_escape_info() { | |
| 243 VM_ENTRY_MARK; | |
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244 MethodData* mdo = get_MethodData(); |
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245 if (mdo != NULL) { |
| 0 | 246 mdo->clear_escape_info(); |
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247 ArgInfoData *aid = arg_info(); |
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248 int arg_count = (aid == NULL) ? 0 : aid->number_of_args(); |
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249 for (int i = 0; i < arg_count; i++) { |
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250 set_arg_modified(i, 0); |
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251 } |
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252 } |
| 0 | 253 _eflags = _arg_local = _arg_stack = _arg_returned = 0; |
| 254 } | |
| 255 | |
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256 // copy our escape info to the MethodData* if it exists |
| 0 | 257 void ciMethodData::update_escape_info() { |
| 258 VM_ENTRY_MARK; | |
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259 MethodData* mdo = get_MethodData(); |
| 0 | 260 if ( mdo != NULL) { |
| 261 mdo->set_eflags(_eflags); | |
| 262 mdo->set_arg_local(_arg_local); | |
| 263 mdo->set_arg_stack(_arg_stack); | |
| 264 mdo->set_arg_returned(_arg_returned); | |
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265 int arg_count = mdo->method()->size_of_parameters(); |
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266 for (int i = 0; i < arg_count; i++) { |
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267 mdo->set_arg_modified(i, arg_modified(i)); |
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268 } |
| 0 | 269 } |
| 270 } | |
| 271 | |
| 1783 | 272 void ciMethodData::set_compilation_stats(short loops, short blocks) { |
| 273 VM_ENTRY_MARK; | |
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274 MethodData* mdo = get_MethodData(); |
| 1783 | 275 if (mdo != NULL) { |
| 276 mdo->set_num_loops(loops); | |
| 277 mdo->set_num_blocks(blocks); | |
| 278 } | |
| 279 } | |
| 280 | |
| 281 void ciMethodData::set_would_profile(bool p) { | |
| 282 VM_ENTRY_MARK; | |
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283 MethodData* mdo = get_MethodData(); |
| 1783 | 284 if (mdo != NULL) { |
| 285 mdo->set_would_profile(p); | |
| 286 } | |
| 287 } | |
| 288 | |
| 0 | 289 bool ciMethodData::has_escape_info() { |
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290 return eflag_set(MethodData::estimated); |
| 0 | 291 } |
| 292 | |
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293 void ciMethodData::set_eflag(MethodData::EscapeFlag f) { |
| 0 | 294 set_bits(_eflags, f); |
| 295 } | |
| 296 | |
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297 void ciMethodData::clear_eflag(MethodData::EscapeFlag f) { |
| 0 | 298 clear_bits(_eflags, f); |
| 299 } | |
| 300 | |
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301 bool ciMethodData::eflag_set(MethodData::EscapeFlag f) const { |
| 0 | 302 return mask_bits(_eflags, f) != 0; |
| 303 } | |
| 304 | |
| 305 void ciMethodData::set_arg_local(int i) { | |
| 306 set_nth_bit(_arg_local, i); | |
| 307 } | |
| 308 | |
| 309 void ciMethodData::set_arg_stack(int i) { | |
| 310 set_nth_bit(_arg_stack, i); | |
| 311 } | |
| 312 | |
| 313 void ciMethodData::set_arg_returned(int i) { | |
| 314 set_nth_bit(_arg_returned, i); | |
| 315 } | |
| 316 | |
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317 void ciMethodData::set_arg_modified(int arg, uint val) { |
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318 ArgInfoData *aid = arg_info(); |
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319 if (aid == NULL) |
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320 return; |
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321 assert(arg >= 0 && arg < aid->number_of_args(), "valid argument number"); |
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322 aid->set_arg_modified(arg, val); |
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323 } |
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324 |
| 0 | 325 bool ciMethodData::is_arg_local(int i) const { |
| 326 return is_set_nth_bit(_arg_local, i); | |
| 327 } | |
| 328 | |
| 329 bool ciMethodData::is_arg_stack(int i) const { | |
| 330 return is_set_nth_bit(_arg_stack, i); | |
| 331 } | |
| 332 | |
| 333 bool ciMethodData::is_arg_returned(int i) const { | |
| 334 return is_set_nth_bit(_arg_returned, i); | |
| 335 } | |
| 336 | |
|
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337 uint ciMethodData::arg_modified(int arg) const { |
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338 ArgInfoData *aid = arg_info(); |
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339 if (aid == NULL) |
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340 return 0; |
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341 assert(arg >= 0 && arg < aid->number_of_args(), "valid argument number"); |
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342 return aid->arg_modified(arg); |
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343 } |
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344 |
| 0 | 345 ByteSize ciMethodData::offset_of_slot(ciProfileData* data, ByteSize slot_offset_in_data) { |
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346 // Get offset within MethodData* of the data array |
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347 ByteSize data_offset = MethodData::data_offset(); |
| 0 | 348 |
| 349 // Get cell offset of the ProfileData within data array | |
| 350 int cell_offset = dp_to_di(data->dp()); | |
| 351 | |
| 352 // Add in counter_offset, the # of bytes into the ProfileData of counter or flag | |
| 353 int offset = in_bytes(data_offset) + cell_offset + in_bytes(slot_offset_in_data); | |
| 354 | |
| 355 return in_ByteSize(offset); | |
| 356 } | |
| 357 | |
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358 ciArgInfoData *ciMethodData::arg_info() const { |
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359 // Should be last, have to skip all traps. |
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360 DataLayout* dp = data_layout_at(data_size()); |
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361 DataLayout* end = data_layout_at(data_size() + extra_data_size()); |
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362 for (; dp < end; dp = MethodData::next_extra(dp)) { |
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363 if (dp->tag() == DataLayout::arg_info_data_tag) |
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364 return new ciArgInfoData(dp); |
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365 } |
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366 return NULL; |
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367 } |
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368 |
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369 |
| 0 | 370 // Implementation of the print method. |
| 371 void ciMethodData::print_impl(outputStream* st) { | |
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372 ciMetadata::print_impl(st); |
| 0 | 373 } |
| 374 | |
|
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375 void ciMethodData::dump_replay_data(outputStream* out) { |
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376 ASSERT_IN_VM; |
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377 ResourceMark rm; |
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378 MethodData* mdo = get_MethodData(); |
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379 Method* method = mdo->method(); |
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380 Klass* holder = method->method_holder(); |
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381 out->print("ciMethodData %s %s %s %d %d", |
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382 holder->name()->as_quoted_ascii(), |
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383 method->name()->as_quoted_ascii(), |
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384 method->signature()->as_quoted_ascii(), |
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385 _state, |
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386 current_mileage()); |
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387 |
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388 // dump the contents of the MDO header as raw data |
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389 unsigned char* orig = (unsigned char*)&_orig; |
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390 int length = sizeof(_orig); |
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391 out->print(" orig %d", length); |
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392 for (int i = 0; i < length; i++) { |
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393 out->print(" %d", orig[i]); |
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394 } |
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395 |
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396 // dump the MDO data as raw data |
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397 int elements = data_size() / sizeof(intptr_t); |
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398 out->print(" data %d", elements); |
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399 for (int i = 0; i < elements; i++) { |
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400 // We could use INTPTR_FORMAT here but that's a zero justified |
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401 // which makes comparing it with the SA version of this output |
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402 // harder. |
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403 #ifdef _LP64 |
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404 out->print(" 0x%" FORMAT64_MODIFIER "x", data()[i]); |
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405 #else |
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406 out->print(" 0x%x", data()[i]); |
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407 #endif |
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408 } |
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409 |
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410 // The MDO contained oop references as ciObjects, so scan for those |
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411 // and emit pairs of offset and klass name so that they can be |
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412 // reconstructed at runtime. The first round counts the number of |
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413 // oop references and the second actually emits them. |
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414 int count = 0; |
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415 for (int round = 0; round < 2; round++) { |
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416 if (round == 1) out->print(" oops %d", count); |
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417 ProfileData* pdata = first_data(); |
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418 for ( ; is_valid(pdata); pdata = next_data(pdata)) { |
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419 if (pdata->is_ReceiverTypeData()) { |
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420 ciReceiverTypeData* vdata = (ciReceiverTypeData*)pdata; |
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421 for (uint i = 0; i < vdata->row_limit(); i++) { |
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422 ciKlass* k = vdata->receiver(i); |
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423 if (k != NULL) { |
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424 if (round == 0) { |
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425 count++; |
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426 } else { |
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427 out->print(" %d %s", dp_to_di(vdata->dp() + in_bytes(vdata->receiver_offset(i))) / sizeof(intptr_t), k->name()->as_quoted_ascii()); |
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428 } |
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429 } |
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430 } |
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431 } else if (pdata->is_VirtualCallData()) { |
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432 ciVirtualCallData* vdata = (ciVirtualCallData*)pdata; |
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433 for (uint i = 0; i < vdata->row_limit(); i++) { |
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434 ciKlass* k = vdata->receiver(i); |
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435 if (k != NULL) { |
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436 if (round == 0) { |
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437 count++; |
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438 } else { |
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439 out->print(" %d %s", dp_to_di(vdata->dp() + in_bytes(vdata->receiver_offset(i))) / sizeof(intptr_t), k->name()->as_quoted_ascii()); |
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440 } |
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441 } |
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442 } |
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443 } |
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444 } |
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445 } |
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446 out->cr(); |
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447 } |
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448 |
| 0 | 449 #ifndef PRODUCT |
| 450 void ciMethodData::print() { | |
| 451 print_data_on(tty); | |
| 452 } | |
| 453 | |
| 454 void ciMethodData::print_data_on(outputStream* st) { | |
| 455 ResourceMark rm; | |
| 456 ciProfileData* data; | |
| 457 for (data = first_data(); is_valid(data); data = next_data(data)) { | |
| 458 st->print("%d", dp_to_di(data->dp())); | |
| 459 st->fill_to(6); | |
| 460 data->print_data_on(st); | |
| 461 } | |
|
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462 st->print_cr("--- Extra data:"); |
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463 DataLayout* dp = data_layout_at(data_size()); |
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464 DataLayout* end = data_layout_at(data_size() + extra_data_size()); |
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465 for (; dp < end; dp = MethodData::next_extra(dp)) { |
|
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466 if (dp->tag() == DataLayout::no_tag) continue; |
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467 if (dp->tag() == DataLayout::bit_data_tag) { |
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468 data = new BitData(dp); |
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469 } else { |
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470 assert(dp->tag() == DataLayout::arg_info_data_tag, "must be BitData or ArgInfo"); |
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471 data = new ciArgInfoData(dp); |
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472 dp = end; // ArgInfoData is at the end of extra data section. |
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473 } |
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474 st->print("%d", dp_to_di(data->dp())); |
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475 st->fill_to(6); |
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476 data->print_data_on(st); |
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477 } |
| 0 | 478 } |
| 479 | |
| 480 void ciReceiverTypeData::print_receiver_data_on(outputStream* st) { | |
| 481 uint row; | |
| 482 int entries = 0; | |
| 483 for (row = 0; row < row_limit(); row++) { | |
| 484 if (receiver(row) != NULL) entries++; | |
| 485 } | |
| 486 st->print_cr("count(%u) entries(%u)", count(), entries); | |
| 487 for (row = 0; row < row_limit(); row++) { | |
| 488 if (receiver(row) != NULL) { | |
| 489 tab(st); | |
| 490 receiver(row)->print_name_on(st); | |
| 491 st->print_cr("(%u)", receiver_count(row)); | |
| 492 } | |
| 493 } | |
| 494 } | |
| 495 | |
| 496 void ciReceiverTypeData::print_data_on(outputStream* st) { | |
| 497 print_shared(st, "ciReceiverTypeData"); | |
| 498 print_receiver_data_on(st); | |
| 499 } | |
| 500 | |
| 501 void ciVirtualCallData::print_data_on(outputStream* st) { | |
| 502 print_shared(st, "ciVirtualCallData"); | |
| 503 rtd_super()->print_receiver_data_on(st); | |
| 504 } | |
| 505 #endif |