Mercurial > hg > truffle
annotate src/share/vm/code/nmethod.cpp @ 20277:882004b9e7e1
8047362: Add a version of CompiledIC_at that doesn't create a new RelocIterator
Reviewed-by: iveresov, mgerdin
| author | stefank |
|---|---|
| date | Tue, 01 Jul 2014 09:03:55 +0200 |
| parents | 9717199cb8de |
| children | 2c6ef90f030a |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2014, 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 "code/codeCache.hpp" | |
| 27 #include "code/compiledIC.hpp" | |
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28 #include "code/dependencies.hpp" |
| 1972 | 29 #include "code/nmethod.hpp" |
| 30 #include "code/scopeDesc.hpp" | |
| 31 #include "compiler/abstractCompiler.hpp" | |
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32 #include "compiler/compileBroker.hpp" |
| 1972 | 33 #include "compiler/compileLog.hpp" |
| 34 #include "compiler/compilerOracle.hpp" | |
| 35 #include "compiler/disassembler.hpp" | |
| 36 #include "interpreter/bytecode.hpp" | |
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37 #include "oops/methodData.hpp" |
| 1972 | 38 #include "prims/jvmtiRedefineClassesTrace.hpp" |
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39 #include "prims/jvmtiImpl.hpp" |
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40 #include "runtime/orderAccess.inline.hpp" |
| 1972 | 41 #include "runtime/sharedRuntime.hpp" |
| 42 #include "runtime/sweeper.hpp" | |
| 43 #include "utilities/dtrace.hpp" | |
| 44 #include "utilities/events.hpp" | |
| 45 #include "utilities/xmlstream.hpp" | |
| 46 #ifdef SHARK | |
| 47 #include "shark/sharkCompiler.hpp" | |
| 48 #endif | |
| 0 | 49 |
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50 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
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51 |
| 0 | 52 #ifdef DTRACE_ENABLED |
| 53 | |
| 54 // Only bother with this argument setup if dtrace is available | |
| 55 | |
| 4006 | 56 #ifndef USDT2 |
| 0 | 57 HS_DTRACE_PROBE_DECL8(hotspot, compiled__method__load, |
| 58 const char*, int, const char*, int, const char*, int, void*, size_t); | |
| 59 | |
| 60 HS_DTRACE_PROBE_DECL6(hotspot, compiled__method__unload, | |
| 61 char*, int, char*, int, char*, int); | |
| 62 | |
| 63 #define DTRACE_METHOD_UNLOAD_PROBE(method) \ | |
| 64 { \ | |
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65 Method* m = (method); \ |
| 0 | 66 if (m != NULL) { \ |
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67 Symbol* klass_name = m->klass_name(); \ |
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68 Symbol* name = m->name(); \ |
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69 Symbol* signature = m->signature(); \ |
| 0 | 70 HS_DTRACE_PROBE6(hotspot, compiled__method__unload, \ |
| 71 klass_name->bytes(), klass_name->utf8_length(), \ | |
| 72 name->bytes(), name->utf8_length(), \ | |
| 73 signature->bytes(), signature->utf8_length()); \ | |
| 74 } \ | |
| 75 } | |
| 4006 | 76 #else /* USDT2 */ |
| 77 #define DTRACE_METHOD_UNLOAD_PROBE(method) \ | |
| 78 { \ | |
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79 Method* m = (method); \ |
| 4006 | 80 if (m != NULL) { \ |
| 81 Symbol* klass_name = m->klass_name(); \ | |
| 82 Symbol* name = m->name(); \ | |
| 83 Symbol* signature = m->signature(); \ | |
| 84 HOTSPOT_COMPILED_METHOD_UNLOAD( \ | |
| 85 (char *) klass_name->bytes(), klass_name->utf8_length(), \ | |
| 86 (char *) name->bytes(), name->utf8_length(), \ | |
| 87 (char *) signature->bytes(), signature->utf8_length()); \ | |
| 88 } \ | |
| 89 } | |
| 90 #endif /* USDT2 */ | |
| 0 | 91 |
| 92 #else // ndef DTRACE_ENABLED | |
| 93 | |
| 94 #define DTRACE_METHOD_UNLOAD_PROBE(method) | |
| 95 | |
| 96 #endif | |
| 97 | |
| 98 bool nmethod::is_compiled_by_c1() const { | |
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99 if (compiler() == NULL) { |
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100 return false; |
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101 } |
| 0 | 102 return compiler()->is_c1(); |
| 103 } | |
| 104 bool nmethod::is_compiled_by_c2() const { | |
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105 if (compiler() == NULL) { |
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106 return false; |
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107 } |
| 0 | 108 return compiler()->is_c2(); |
| 109 } | |
| 1692 | 110 bool nmethod::is_compiled_by_shark() const { |
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111 if (compiler() == NULL) { |
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112 return false; |
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113 } |
| 1692 | 114 return compiler()->is_shark(); |
| 115 } | |
| 0 | 116 |
| 117 | |
| 118 | |
| 119 //--------------------------------------------------------------------------------- | |
| 120 // NMethod statistics | |
| 121 // They are printed under various flags, including: | |
| 122 // PrintC1Statistics, PrintOptoStatistics, LogVMOutput, and LogCompilation. | |
| 123 // (In the latter two cases, they like other stats are printed to the log only.) | |
| 124 | |
| 125 #ifndef PRODUCT | |
| 126 // These variables are put into one block to reduce relocations | |
| 127 // and make it simpler to print from the debugger. | |
| 128 static | |
| 129 struct nmethod_stats_struct { | |
| 130 int nmethod_count; | |
| 131 int total_size; | |
| 132 int relocation_size; | |
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133 int consts_size; |
| 1748 | 134 int insts_size; |
| 0 | 135 int stub_size; |
| 136 int scopes_data_size; | |
| 137 int scopes_pcs_size; | |
| 138 int dependencies_size; | |
| 139 int handler_table_size; | |
| 140 int nul_chk_table_size; | |
| 141 int oops_size; | |
| 142 | |
| 143 void note_nmethod(nmethod* nm) { | |
| 144 nmethod_count += 1; | |
| 145 total_size += nm->size(); | |
| 146 relocation_size += nm->relocation_size(); | |
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147 consts_size += nm->consts_size(); |
| 1748 | 148 insts_size += nm->insts_size(); |
| 0 | 149 stub_size += nm->stub_size(); |
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150 oops_size += nm->oops_size(); |
| 0 | 151 scopes_data_size += nm->scopes_data_size(); |
| 152 scopes_pcs_size += nm->scopes_pcs_size(); | |
| 153 dependencies_size += nm->dependencies_size(); | |
| 154 handler_table_size += nm->handler_table_size(); | |
| 155 nul_chk_table_size += nm->nul_chk_table_size(); | |
| 156 } | |
| 157 void print_nmethod_stats() { | |
| 158 if (nmethod_count == 0) return; | |
| 159 tty->print_cr("Statistics for %d bytecoded nmethods:", nmethod_count); | |
| 160 if (total_size != 0) tty->print_cr(" total in heap = %d", total_size); | |
| 161 if (relocation_size != 0) tty->print_cr(" relocation = %d", relocation_size); | |
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162 if (consts_size != 0) tty->print_cr(" constants = %d", consts_size); |
| 1748 | 163 if (insts_size != 0) tty->print_cr(" main code = %d", insts_size); |
| 0 | 164 if (stub_size != 0) tty->print_cr(" stub code = %d", stub_size); |
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165 if (oops_size != 0) tty->print_cr(" oops = %d", oops_size); |
| 0 | 166 if (scopes_data_size != 0) tty->print_cr(" scopes data = %d", scopes_data_size); |
| 167 if (scopes_pcs_size != 0) tty->print_cr(" scopes pcs = %d", scopes_pcs_size); | |
| 168 if (dependencies_size != 0) tty->print_cr(" dependencies = %d", dependencies_size); | |
| 169 if (handler_table_size != 0) tty->print_cr(" handler table = %d", handler_table_size); | |
| 170 if (nul_chk_table_size != 0) tty->print_cr(" nul chk table = %d", nul_chk_table_size); | |
| 171 } | |
| 172 | |
| 173 int native_nmethod_count; | |
| 174 int native_total_size; | |
| 175 int native_relocation_size; | |
| 1748 | 176 int native_insts_size; |
| 0 | 177 int native_oops_size; |
| 178 void note_native_nmethod(nmethod* nm) { | |
| 179 native_nmethod_count += 1; | |
| 180 native_total_size += nm->size(); | |
| 181 native_relocation_size += nm->relocation_size(); | |
| 1748 | 182 native_insts_size += nm->insts_size(); |
| 0 | 183 native_oops_size += nm->oops_size(); |
| 184 } | |
| 185 void print_native_nmethod_stats() { | |
| 186 if (native_nmethod_count == 0) return; | |
| 187 tty->print_cr("Statistics for %d native nmethods:", native_nmethod_count); | |
| 188 if (native_total_size != 0) tty->print_cr(" N. total size = %d", native_total_size); | |
| 189 if (native_relocation_size != 0) tty->print_cr(" N. relocation = %d", native_relocation_size); | |
| 1748 | 190 if (native_insts_size != 0) tty->print_cr(" N. main code = %d", native_insts_size); |
| 0 | 191 if (native_oops_size != 0) tty->print_cr(" N. oops = %d", native_oops_size); |
| 192 } | |
| 193 | |
| 194 int pc_desc_resets; // number of resets (= number of caches) | |
| 195 int pc_desc_queries; // queries to nmethod::find_pc_desc | |
| 196 int pc_desc_approx; // number of those which have approximate true | |
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197 int pc_desc_repeats; // number of _pc_descs[0] hits |
| 0 | 198 int pc_desc_hits; // number of LRU cache hits |
| 199 int pc_desc_tests; // total number of PcDesc examinations | |
| 200 int pc_desc_searches; // total number of quasi-binary search steps | |
| 201 int pc_desc_adds; // number of LUR cache insertions | |
| 202 | |
| 203 void print_pc_stats() { | |
| 204 tty->print_cr("PcDesc Statistics: %d queries, %.2f comparisons per query", | |
| 205 pc_desc_queries, | |
| 206 (double)(pc_desc_tests + pc_desc_searches) | |
| 207 / pc_desc_queries); | |
| 208 tty->print_cr(" caches=%d queries=%d/%d, hits=%d+%d, tests=%d+%d, adds=%d", | |
| 209 pc_desc_resets, | |
| 210 pc_desc_queries, pc_desc_approx, | |
| 211 pc_desc_repeats, pc_desc_hits, | |
| 212 pc_desc_tests, pc_desc_searches, pc_desc_adds); | |
| 213 } | |
| 214 } nmethod_stats; | |
| 215 #endif //PRODUCT | |
| 216 | |
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217 |
| 0 | 218 //--------------------------------------------------------------------------------- |
| 219 | |
| 220 | |
| 221 ExceptionCache::ExceptionCache(Handle exception, address pc, address handler) { | |
| 222 assert(pc != NULL, "Must be non null"); | |
| 223 assert(exception.not_null(), "Must be non null"); | |
| 224 assert(handler != NULL, "Must be non null"); | |
| 225 | |
| 226 _count = 0; | |
| 227 _exception_type = exception->klass(); | |
| 228 _next = NULL; | |
| 229 | |
| 230 add_address_and_handler(pc,handler); | |
| 231 } | |
| 232 | |
| 233 | |
| 234 address ExceptionCache::match(Handle exception, address pc) { | |
| 235 assert(pc != NULL,"Must be non null"); | |
| 236 assert(exception.not_null(),"Must be non null"); | |
| 237 if (exception->klass() == exception_type()) { | |
| 238 return (test_address(pc)); | |
| 239 } | |
| 240 | |
| 241 return NULL; | |
| 242 } | |
| 243 | |
| 244 | |
| 245 bool ExceptionCache::match_exception_with_space(Handle exception) { | |
| 246 assert(exception.not_null(),"Must be non null"); | |
| 247 if (exception->klass() == exception_type() && count() < cache_size) { | |
| 248 return true; | |
| 249 } | |
| 250 return false; | |
| 251 } | |
| 252 | |
| 253 | |
| 254 address ExceptionCache::test_address(address addr) { | |
| 255 for (int i=0; i<count(); i++) { | |
| 256 if (pc_at(i) == addr) { | |
| 257 return handler_at(i); | |
| 258 } | |
| 259 } | |
| 260 return NULL; | |
| 261 } | |
| 262 | |
| 263 | |
| 264 bool ExceptionCache::add_address_and_handler(address addr, address handler) { | |
| 265 if (test_address(addr) == handler) return true; | |
| 266 if (count() < cache_size) { | |
| 267 set_pc_at(count(),addr); | |
| 268 set_handler_at(count(), handler); | |
| 269 increment_count(); | |
| 270 return true; | |
| 271 } | |
| 272 return false; | |
| 273 } | |
| 274 | |
| 275 | |
| 276 // private method for handling exception cache | |
| 277 // These methods are private, and used to manipulate the exception cache | |
| 278 // directly. | |
| 279 ExceptionCache* nmethod::exception_cache_entry_for_exception(Handle exception) { | |
| 280 ExceptionCache* ec = exception_cache(); | |
| 281 while (ec != NULL) { | |
| 282 if (ec->match_exception_with_space(exception)) { | |
| 283 return ec; | |
| 284 } | |
| 285 ec = ec->next(); | |
| 286 } | |
| 287 return NULL; | |
| 288 } | |
| 289 | |
| 290 | |
| 291 //----------------------------------------------------------------------------- | |
| 292 | |
| 293 | |
| 294 // Helper used by both find_pc_desc methods. | |
| 295 static inline bool match_desc(PcDesc* pc, int pc_offset, bool approximate) { | |
| 296 NOT_PRODUCT(++nmethod_stats.pc_desc_tests); | |
| 297 if (!approximate) | |
| 298 return pc->pc_offset() == pc_offset; | |
| 299 else | |
| 300 return (pc-1)->pc_offset() < pc_offset && pc_offset <= pc->pc_offset(); | |
| 301 } | |
| 302 | |
| 303 void PcDescCache::reset_to(PcDesc* initial_pc_desc) { | |
| 304 if (initial_pc_desc == NULL) { | |
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305 _pc_descs[0] = NULL; // native method; no PcDescs at all |
| 0 | 306 return; |
| 307 } | |
| 308 NOT_PRODUCT(++nmethod_stats.pc_desc_resets); | |
| 309 // reset the cache by filling it with benign (non-null) values | |
| 310 assert(initial_pc_desc->pc_offset() < 0, "must be sentinel"); | |
| 311 for (int i = 0; i < cache_size; i++) | |
| 312 _pc_descs[i] = initial_pc_desc; | |
| 313 } | |
| 314 | |
| 315 PcDesc* PcDescCache::find_pc_desc(int pc_offset, bool approximate) { | |
| 316 NOT_PRODUCT(++nmethod_stats.pc_desc_queries); | |
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317 NOT_PRODUCT(if (approximate) ++nmethod_stats.pc_desc_approx); |
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318 |
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319 // Note: one might think that caching the most recently |
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320 // read value separately would be a win, but one would be |
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321 // wrong. When many threads are updating it, the cache |
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322 // line it's in would bounce between caches, negating |
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323 // any benefit. |
| 0 | 324 |
| 325 // In order to prevent race conditions do not load cache elements | |
| 326 // repeatedly, but use a local copy: | |
| 327 PcDesc* res; | |
| 328 | |
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329 // Step one: Check the most recently added value. |
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330 res = _pc_descs[0]; |
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331 if (res == NULL) return NULL; // native method; no PcDescs at all |
| 0 | 332 if (match_desc(res, pc_offset, approximate)) { |
| 333 NOT_PRODUCT(++nmethod_stats.pc_desc_repeats); | |
| 334 return res; | |
| 335 } | |
| 336 | |
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337 // Step two: Check the rest of the LRU cache. |
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338 for (int i = 1; i < cache_size; ++i) { |
| 0 | 339 res = _pc_descs[i]; |
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340 if (res->pc_offset() < 0) break; // optimization: skip empty cache |
| 0 | 341 if (match_desc(res, pc_offset, approximate)) { |
| 342 NOT_PRODUCT(++nmethod_stats.pc_desc_hits); | |
| 343 return res; | |
| 344 } | |
| 345 } | |
| 346 | |
| 347 // Report failure. | |
| 348 return NULL; | |
| 349 } | |
| 350 | |
| 351 void PcDescCache::add_pc_desc(PcDesc* pc_desc) { | |
| 352 NOT_PRODUCT(++nmethod_stats.pc_desc_adds); | |
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353 // Update the LRU cache by shifting pc_desc forward. |
| 0 | 354 for (int i = 0; i < cache_size; i++) { |
| 355 PcDesc* next = _pc_descs[i]; | |
| 356 _pc_descs[i] = pc_desc; | |
| 357 pc_desc = next; | |
| 358 } | |
| 359 } | |
| 360 | |
| 361 // adjust pcs_size so that it is a multiple of both oopSize and | |
| 362 // sizeof(PcDesc) (assumes that if sizeof(PcDesc) is not a multiple | |
| 363 // of oopSize, then 2*sizeof(PcDesc) is) | |
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364 static int adjust_pcs_size(int pcs_size) { |
| 0 | 365 int nsize = round_to(pcs_size, oopSize); |
| 366 if ((nsize % sizeof(PcDesc)) != 0) { | |
| 367 nsize = pcs_size + sizeof(PcDesc); | |
| 368 } | |
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369 assert((nsize % oopSize) == 0, "correct alignment"); |
| 0 | 370 return nsize; |
| 371 } | |
| 372 | |
| 373 //----------------------------------------------------------------------------- | |
| 374 | |
| 375 | |
| 376 void nmethod::add_exception_cache_entry(ExceptionCache* new_entry) { | |
| 377 assert(ExceptionCache_lock->owned_by_self(),"Must hold the ExceptionCache_lock"); | |
| 378 assert(new_entry != NULL,"Must be non null"); | |
| 379 assert(new_entry->next() == NULL, "Must be null"); | |
| 380 | |
| 381 if (exception_cache() != NULL) { | |
| 382 new_entry->set_next(exception_cache()); | |
| 383 } | |
| 384 set_exception_cache(new_entry); | |
| 385 } | |
| 386 | |
| 20269 | 387 void nmethod::clean_exception_cache(BoolObjectClosure* is_alive) { |
| 0 | 388 ExceptionCache* prev = NULL; |
| 389 ExceptionCache* curr = exception_cache(); | |
| 20269 | 390 |
| 391 while (curr != NULL) { | |
| 392 ExceptionCache* next = curr->next(); | |
| 393 | |
| 394 Klass* ex_klass = curr->exception_type(); | |
| 395 if (ex_klass != NULL && !ex_klass->is_loader_alive(is_alive)) { | |
| 396 if (prev == NULL) { | |
| 397 set_exception_cache(next); | |
| 398 } else { | |
| 399 prev->set_next(next); | |
| 400 } | |
| 401 delete curr; | |
| 402 // prev stays the same. | |
| 403 } else { | |
| 404 prev = curr; | |
| 405 } | |
| 406 | |
| 407 curr = next; | |
| 0 | 408 } |
| 409 } | |
| 410 | |
| 411 // public method for accessing the exception cache | |
| 412 // These are the public access methods. | |
| 413 address nmethod::handler_for_exception_and_pc(Handle exception, address pc) { | |
| 414 // We never grab a lock to read the exception cache, so we may | |
| 415 // have false negatives. This is okay, as it can only happen during | |
| 416 // the first few exception lookups for a given nmethod. | |
| 417 ExceptionCache* ec = exception_cache(); | |
| 418 while (ec != NULL) { | |
| 419 address ret_val; | |
| 420 if ((ret_val = ec->match(exception,pc)) != NULL) { | |
| 421 return ret_val; | |
| 422 } | |
| 423 ec = ec->next(); | |
| 424 } | |
| 425 return NULL; | |
| 426 } | |
| 427 | |
| 428 | |
| 429 void nmethod::add_handler_for_exception_and_pc(Handle exception, address pc, address handler) { | |
| 430 // There are potential race conditions during exception cache updates, so we | |
| 431 // must own the ExceptionCache_lock before doing ANY modifications. Because | |
| 605 | 432 // we don't lock during reads, it is possible to have several threads attempt |
| 0 | 433 // to update the cache with the same data. We need to check for already inserted |
| 434 // copies of the current data before adding it. | |
| 435 | |
| 436 MutexLocker ml(ExceptionCache_lock); | |
| 437 ExceptionCache* target_entry = exception_cache_entry_for_exception(exception); | |
| 438 | |
| 439 if (target_entry == NULL || !target_entry->add_address_and_handler(pc,handler)) { | |
| 440 target_entry = new ExceptionCache(exception,pc,handler); | |
| 441 add_exception_cache_entry(target_entry); | |
| 442 } | |
| 443 } | |
| 444 | |
| 445 | |
| 446 //-------------end of code for ExceptionCache-------------- | |
| 447 | |
| 448 | |
| 449 int nmethod::total_size() const { | |
| 450 return | |
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451 consts_size() + |
| 1748 | 452 insts_size() + |
| 0 | 453 stub_size() + |
| 454 scopes_data_size() + | |
| 455 scopes_pcs_size() + | |
| 456 handler_table_size() + | |
| 457 nul_chk_table_size(); | |
| 458 } | |
| 459 | |
| 460 const char* nmethod::compile_kind() const { | |
| 461 if (is_osr_method()) return "osr"; | |
|
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462 if (method() != NULL && is_native_method()) return "c2n"; |
| 0 | 463 return NULL; |
| 464 } | |
| 465 | |
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466 // Fill in default values for various flag fields |
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467 void nmethod::init_defaults() { |
| 13441 | 468 _state = in_use; |
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469 _marked_for_reclamation = 0; |
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470 _has_flushed_dependencies = 0; |
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471 _has_unsafe_access = 0; |
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472 _has_method_handle_invokes = 0; |
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473 _lazy_critical_native = 0; |
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474 _has_wide_vectors = 0; |
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475 _marked_for_deoptimization = 0; |
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476 _lock_count = 0; |
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477 _stack_traversal_mark = 0; |
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478 _unload_reported = false; // jvmti state |
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479 |
| 1726 | 480 #ifdef ASSERT |
| 481 _oops_are_stale = false; | |
| 482 #endif | |
| 483 | |
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484 _oops_do_mark_link = NULL; |
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485 _jmethod_id = NULL; |
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486 _osr_link = NULL; |
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487 _scavenge_root_link = NULL; |
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488 _scavenge_root_state = 0; |
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489 _compiler = NULL; |
| 17780 | 490 #if INCLUDE_RTM_OPT |
| 491 _rtm_state = NoRTM; | |
| 492 #endif | |
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493 #ifdef HAVE_DTRACE_H |
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494 _trap_offset = 0; |
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495 #endif // def HAVE_DTRACE_H |
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496 } |
| 0 | 497 |
| 498 nmethod* nmethod::new_native_nmethod(methodHandle method, | |
|
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499 int compile_id, |
| 0 | 500 CodeBuffer *code_buffer, |
| 501 int vep_offset, | |
| 502 int frame_complete, | |
| 503 int frame_size, | |
| 504 ByteSize basic_lock_owner_sp_offset, | |
| 505 ByteSize basic_lock_sp_offset, | |
| 506 OopMapSet* oop_maps) { | |
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507 code_buffer->finalize_oop_references(method); |
| 0 | 508 // create nmethod |
| 509 nmethod* nm = NULL; | |
| 510 { | |
| 511 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
| 512 int native_nmethod_size = allocation_size(code_buffer, sizeof(nmethod)); | |
|
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513 CodeOffsets offsets; |
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514 offsets.set_value(CodeOffsets::Verified_Entry, vep_offset); |
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515 offsets.set_value(CodeOffsets::Frame_Complete, frame_complete); |
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516 nm = new (native_nmethod_size) nmethod(method(), native_nmethod_size, |
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517 compile_id, &offsets, |
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518 code_buffer, frame_size, |
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519 basic_lock_owner_sp_offset, |
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520 basic_lock_sp_offset, oop_maps); |
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521 NOT_PRODUCT(if (nm != NULL) nmethod_stats.note_native_nmethod(nm)); |
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522 if (PrintAssembly && nm != NULL) { |
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523 Disassembler::decode(nm); |
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524 } |
| 0 | 525 } |
| 526 // verify nmethod | |
| 527 debug_only(if (nm) nm->verify();) // might block | |
| 528 | |
| 529 if (nm != NULL) { | |
| 530 nm->log_new_nmethod(); | |
| 531 } | |
| 532 | |
| 533 return nm; | |
| 534 } | |
| 535 | |
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536 #ifdef HAVE_DTRACE_H |
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537 nmethod* nmethod::new_dtrace_nmethod(methodHandle method, |
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538 CodeBuffer *code_buffer, |
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539 int vep_offset, |
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540 int trap_offset, |
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541 int frame_complete, |
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542 int frame_size) { |
|
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543 code_buffer->finalize_oop_references(method); |
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544 // create nmethod |
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545 nmethod* nm = NULL; |
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546 { |
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547 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
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548 int nmethod_size = allocation_size(code_buffer, sizeof(nmethod)); |
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549 CodeOffsets offsets; |
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550 offsets.set_value(CodeOffsets::Verified_Entry, vep_offset); |
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551 offsets.set_value(CodeOffsets::Dtrace_trap, trap_offset); |
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552 offsets.set_value(CodeOffsets::Frame_Complete, frame_complete); |
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553 |
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554 nm = new (nmethod_size) nmethod(method(), nmethod_size, |
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555 &offsets, code_buffer, frame_size); |
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556 |
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557 NOT_PRODUCT(if (nm != NULL) nmethod_stats.note_nmethod(nm)); |
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558 if (PrintAssembly && nm != NULL) { |
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559 Disassembler::decode(nm); |
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560 } |
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561 } |
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562 // verify nmethod |
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563 debug_only(if (nm) nm->verify();) // might block |
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564 |
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565 if (nm != NULL) { |
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566 nm->log_new_nmethod(); |
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567 } |
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568 |
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569 return nm; |
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570 } |
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571 |
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572 #endif // def HAVE_DTRACE_H |
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573 |
| 0 | 574 nmethod* nmethod::new_nmethod(methodHandle method, |
| 575 int compile_id, | |
| 576 int entry_bci, | |
| 577 CodeOffsets* offsets, | |
| 578 int orig_pc_offset, | |
| 579 DebugInformationRecorder* debug_info, | |
| 580 Dependencies* dependencies, | |
| 581 CodeBuffer* code_buffer, int frame_size, | |
| 582 OopMapSet* oop_maps, | |
| 583 ExceptionHandlerTable* handler_table, | |
| 584 ImplicitExceptionTable* nul_chk_table, | |
| 585 AbstractCompiler* compiler, | |
| 586 int comp_level | |
| 587 ) | |
| 588 { | |
| 589 assert(debug_info->oop_recorder() == code_buffer->oop_recorder(), "shared OR"); | |
|
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590 code_buffer->finalize_oop_references(method); |
| 0 | 591 // create nmethod |
| 592 nmethod* nm = NULL; | |
| 593 { MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
| 594 int nmethod_size = | |
| 595 allocation_size(code_buffer, sizeof(nmethod)) | |
| 596 + adjust_pcs_size(debug_info->pcs_size()) | |
| 597 + round_to(dependencies->size_in_bytes() , oopSize) | |
| 598 + round_to(handler_table->size_in_bytes(), oopSize) | |
| 599 + round_to(nul_chk_table->size_in_bytes(), oopSize) | |
| 600 + round_to(debug_info->data_size() , oopSize); | |
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601 |
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602 nm = new (nmethod_size) |
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603 nmethod(method(), nmethod_size, compile_id, entry_bci, offsets, |
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604 orig_pc_offset, debug_info, dependencies, code_buffer, frame_size, |
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605 oop_maps, |
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606 handler_table, |
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607 nul_chk_table, |
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608 compiler, |
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609 comp_level); |
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610 |
| 0 | 611 if (nm != NULL) { |
| 612 // To make dependency checking during class loading fast, record | |
| 613 // the nmethod dependencies in the classes it is dependent on. | |
| 614 // This allows the dependency checking code to simply walk the | |
| 615 // class hierarchy above the loaded class, checking only nmethods | |
| 616 // which are dependent on those classes. The slow way is to | |
| 617 // check every nmethod for dependencies which makes it linear in | |
| 618 // the number of methods compiled. For applications with a lot | |
| 619 // classes the slow way is too slow. | |
| 620 for (Dependencies::DepStream deps(nm); deps.next(); ) { | |
|
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621 Klass* klass = deps.context_type(); |
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622 if (klass == NULL) { |
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623 continue; // ignore things like evol_method |
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624 } |
| 0 | 625 |
| 626 // record this nmethod as dependent on this klass | |
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627 InstanceKlass::cast(klass)->add_dependent_nmethod(nm); |
| 0 | 628 } |
|
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629 NOT_PRODUCT(nmethod_stats.note_nmethod(nm)); |
|
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630 if (PrintAssembly || CompilerOracle::has_option_string(method, "PrintAssembly")) { |
|
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631 Disassembler::decode(nm); |
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632 } |
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633 } |
| 0 | 634 } |
|
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635 // Do verification and logging outside CodeCache_lock. |
| 0 | 636 if (nm != NULL) { |
|
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637 // Safepoints in nmethod::verify aren't allowed because nm hasn't been installed yet. |
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638 DEBUG_ONLY(nm->verify();) |
| 0 | 639 nm->log_new_nmethod(); |
| 640 } | |
| 641 return nm; | |
| 642 } | |
| 643 | |
| 644 | |
| 645 // For native wrappers | |
| 646 nmethod::nmethod( | |
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647 Method* method, |
| 0 | 648 int nmethod_size, |
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649 int compile_id, |
| 0 | 650 CodeOffsets* offsets, |
| 651 CodeBuffer* code_buffer, | |
| 652 int frame_size, | |
| 653 ByteSize basic_lock_owner_sp_offset, | |
| 654 ByteSize basic_lock_sp_offset, | |
| 655 OopMapSet* oop_maps ) | |
| 656 : CodeBlob("native nmethod", code_buffer, sizeof(nmethod), | |
| 657 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, oop_maps), | |
| 2019 | 658 _native_receiver_sp_offset(basic_lock_owner_sp_offset), |
| 659 _native_basic_lock_sp_offset(basic_lock_sp_offset) | |
| 0 | 660 { |
| 661 { | |
| 662 debug_only(No_Safepoint_Verifier nsv;) | |
| 663 assert_locked_or_safepoint(CodeCache_lock); | |
| 664 | |
|
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665 init_defaults(); |
| 0 | 666 _method = method; |
| 667 _entry_bci = InvocationEntryBci; | |
| 668 // We have no exception handler or deopt handler make the | |
| 669 // values something that will never match a pc like the nmethod vtable entry | |
| 670 _exception_offset = 0; | |
| 671 _deoptimize_offset = 0; | |
| 1204 | 672 _deoptimize_mh_offset = 0; |
| 0 | 673 _orig_pc_offset = 0; |
|
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674 |
| 1748 | 675 _consts_offset = data_offset(); |
| 0 | 676 _stub_offset = data_offset(); |
|
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677 _oops_offset = data_offset(); |
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678 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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679 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
| 0 | 680 _scopes_pcs_offset = _scopes_data_offset; |
| 681 _dependencies_offset = _scopes_pcs_offset; | |
| 682 _handler_table_offset = _dependencies_offset; | |
| 683 _nul_chk_table_offset = _handler_table_offset; | |
| 684 _nmethod_end_offset = _nul_chk_table_offset; | |
|
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685 _compile_id = compile_id; |
| 0 | 686 _comp_level = CompLevel_none; |
| 1748 | 687 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
| 688 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
| 0 | 689 _osr_entry_point = NULL; |
| 690 _exception_cache = NULL; | |
| 691 _pc_desc_cache.reset_to(NULL); | |
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692 _hotness_counter = NMethodSweeper::hotness_counter_reset_val(); |
| 0 | 693 |
|
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694 code_buffer->copy_values_to(this); |
|
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695 if (ScavengeRootsInCode) { |
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696 if (detect_scavenge_root_oops()) { |
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697 CodeCache::add_scavenge_root_nmethod(this); |
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698 } |
| 12080 | 699 Universe::heap()->register_nmethod(this); |
|
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700 } |
|
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|
701 debug_only(verify_scavenge_root_oops()); |
| 0 | 702 CodeCache::commit(this); |
| 703 } | |
| 704 | |
| 705 if (PrintNativeNMethods || PrintDebugInfo || PrintRelocations || PrintDependencies) { | |
| 706 ttyLocker ttyl; // keep the following output all in one block | |
| 707 // This output goes directly to the tty, not the compiler log. | |
| 708 // To enable tools to match it up with the compilation activity, | |
| 709 // be sure to tag this tty output with the compile ID. | |
| 710 if (xtty != NULL) { | |
| 711 xtty->begin_head("print_native_nmethod"); | |
| 712 xtty->method(_method); | |
| 713 xtty->stamp(); | |
| 714 xtty->end_head(" address='" INTPTR_FORMAT "'", (intptr_t) this); | |
| 715 } | |
| 716 // print the header part first | |
| 717 print(); | |
| 718 // then print the requested information | |
| 719 if (PrintNativeNMethods) { | |
| 720 print_code(); | |
|
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721 if (oop_maps != NULL) { |
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722 oop_maps->print(); |
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723 } |
| 0 | 724 } |
| 725 if (PrintRelocations) { | |
| 726 print_relocations(); | |
| 727 } | |
| 728 if (xtty != NULL) { | |
| 729 xtty->tail("print_native_nmethod"); | |
| 730 } | |
| 731 } | |
| 732 } | |
| 733 | |
|
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734 // For dtrace wrappers |
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735 #ifdef HAVE_DTRACE_H |
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736 nmethod::nmethod( |
|
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737 Method* method, |
|
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738 int nmethod_size, |
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739 CodeOffsets* offsets, |
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740 CodeBuffer* code_buffer, |
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741 int frame_size) |
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742 : CodeBlob("dtrace nmethod", code_buffer, sizeof(nmethod), |
|
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|
743 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, NULL), |
| 2019 | 744 _native_receiver_sp_offset(in_ByteSize(-1)), |
| 745 _native_basic_lock_sp_offset(in_ByteSize(-1)) | |
|
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746 { |
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747 { |
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748 debug_only(No_Safepoint_Verifier nsv;) |
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749 assert_locked_or_safepoint(CodeCache_lock); |
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750 |
|
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751 init_defaults(); |
|
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752 _method = method; |
|
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753 _entry_bci = InvocationEntryBci; |
|
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754 // We have no exception handler or deopt handler make the |
|
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755 // values something that will never match a pc like the nmethod vtable entry |
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756 _exception_offset = 0; |
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|
757 _deoptimize_offset = 0; |
| 1204 | 758 _deoptimize_mh_offset = 0; |
|
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|
759 _unwind_handler_offset = -1; |
|
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760 _trap_offset = offsets->value(CodeOffsets::Dtrace_trap); |
|
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761 _orig_pc_offset = 0; |
| 1748 | 762 _consts_offset = data_offset(); |
|
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763 _stub_offset = data_offset(); |
|
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764 _oops_offset = data_offset(); |
|
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765 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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766 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
|
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767 _scopes_pcs_offset = _scopes_data_offset; |
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768 _dependencies_offset = _scopes_pcs_offset; |
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769 _handler_table_offset = _dependencies_offset; |
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770 _nul_chk_table_offset = _handler_table_offset; |
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771 _nmethod_end_offset = _nul_chk_table_offset; |
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772 _compile_id = 0; // default |
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773 _comp_level = CompLevel_none; |
| 1748 | 774 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
| 775 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
|
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776 _osr_entry_point = NULL; |
|
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777 _exception_cache = NULL; |
|
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|
778 _pc_desc_cache.reset_to(NULL); |
|
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779 _hotness_counter = NMethodSweeper::hotness_counter_reset_val(); |
|
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780 |
|
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781 code_buffer->copy_values_to(this); |
|
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782 if (ScavengeRootsInCode) { |
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783 if (detect_scavenge_root_oops()) { |
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784 CodeCache::add_scavenge_root_nmethod(this); |
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785 } |
|
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|
786 Universe::heap()->register_nmethod(this); |
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787 } |
|
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|
788 DEBUG_ONLY(verify_scavenge_root_oops();) |
|
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789 CodeCache::commit(this); |
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790 } |
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791 |
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792 if (PrintNMethods || PrintDebugInfo || PrintRelocations || PrintDependencies) { |
|
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793 ttyLocker ttyl; // keep the following output all in one block |
|
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794 // This output goes directly to the tty, not the compiler log. |
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795 // To enable tools to match it up with the compilation activity, |
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796 // be sure to tag this tty output with the compile ID. |
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797 if (xtty != NULL) { |
|
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798 xtty->begin_head("print_dtrace_nmethod"); |
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799 xtty->method(_method); |
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800 xtty->stamp(); |
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801 xtty->end_head(" address='" INTPTR_FORMAT "'", (intptr_t) this); |
|
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802 } |
|
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803 // print the header part first |
|
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804 print(); |
|
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805 // then print the requested information |
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806 if (PrintNMethods) { |
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807 print_code(); |
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808 } |
|
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809 if (PrintRelocations) { |
|
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810 print_relocations(); |
|
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811 } |
|
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812 if (xtty != NULL) { |
|
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813 xtty->tail("print_dtrace_nmethod"); |
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814 } |
|
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815 } |
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816 } |
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817 #endif // def HAVE_DTRACE_H |
| 0 | 818 |
|
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|
819 void* nmethod::operator new(size_t size, int nmethod_size) throw() { |
|
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820 // Not critical, may return null if there is too little continuous memory |
|
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821 return CodeCache::allocate(nmethod_size); |
| 0 | 822 } |
| 823 | |
| 824 nmethod::nmethod( | |
|
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825 Method* method, |
| 0 | 826 int nmethod_size, |
| 827 int compile_id, | |
| 828 int entry_bci, | |
| 829 CodeOffsets* offsets, | |
| 830 int orig_pc_offset, | |
| 831 DebugInformationRecorder* debug_info, | |
| 832 Dependencies* dependencies, | |
| 833 CodeBuffer *code_buffer, | |
| 834 int frame_size, | |
| 835 OopMapSet* oop_maps, | |
| 836 ExceptionHandlerTable* handler_table, | |
| 837 ImplicitExceptionTable* nul_chk_table, | |
| 838 AbstractCompiler* compiler, | |
| 839 int comp_level | |
| 840 ) | |
| 841 : CodeBlob("nmethod", code_buffer, sizeof(nmethod), | |
| 842 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, oop_maps), | |
| 2019 | 843 _native_receiver_sp_offset(in_ByteSize(-1)), |
| 844 _native_basic_lock_sp_offset(in_ByteSize(-1)) | |
| 0 | 845 { |
| 846 assert(debug_info->oop_recorder() == code_buffer->oop_recorder(), "shared OR"); | |
| 847 { | |
| 848 debug_only(No_Safepoint_Verifier nsv;) | |
| 849 assert_locked_or_safepoint(CodeCache_lock); | |
| 850 | |
|
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851 init_defaults(); |
| 0 | 852 _method = method; |
|
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853 _entry_bci = entry_bci; |
| 0 | 854 _compile_id = compile_id; |
| 855 _comp_level = comp_level; | |
| 856 _compiler = compiler; | |
| 857 _orig_pc_offset = orig_pc_offset; | |
|
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858 _hotness_counter = NMethodSweeper::hotness_counter_reset_val(); |
| 1748 | 859 |
| 860 // Section offsets | |
|
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861 _consts_offset = content_offset() + code_buffer->total_offset_of(code_buffer->consts()); |
|
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862 _stub_offset = content_offset() + code_buffer->total_offset_of(code_buffer->stubs()); |
| 0 | 863 |
| 864 // Exception handler and deopt handler are in the stub section | |
|
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865 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must be set"); |
|
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866 assert(offsets->value(CodeOffsets::Deopt ) != -1, "must be set"); |
| 1748 | 867 _exception_offset = _stub_offset + offsets->value(CodeOffsets::Exceptions); |
| 868 _deoptimize_offset = _stub_offset + offsets->value(CodeOffsets::Deopt); | |
|
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869 if (offsets->value(CodeOffsets::DeoptMH) != -1) { |
|
1762
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870 _deoptimize_mh_offset = _stub_offset + offsets->value(CodeOffsets::DeoptMH); |
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871 } else { |
|
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872 _deoptimize_mh_offset = -1; |
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873 } |
|
1378
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874 if (offsets->value(CodeOffsets::UnwindHandler) != -1) { |
| 1748 | 875 _unwind_handler_offset = code_offset() + offsets->value(CodeOffsets::UnwindHandler); |
|
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876 } else { |
| 1748 | 877 _unwind_handler_offset = -1; |
|
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878 } |
| 1748 | 879 |
|
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880 _oops_offset = data_offset(); |
|
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881 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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882 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
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883 |
|
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884 _scopes_pcs_offset = _scopes_data_offset + round_to(debug_info->data_size (), oopSize); |
| 0 | 885 _dependencies_offset = _scopes_pcs_offset + adjust_pcs_size(debug_info->pcs_size()); |
| 886 _handler_table_offset = _dependencies_offset + round_to(dependencies->size_in_bytes (), oopSize); | |
| 887 _nul_chk_table_offset = _handler_table_offset + round_to(handler_table->size_in_bytes(), oopSize); | |
| 888 _nmethod_end_offset = _nul_chk_table_offset + round_to(nul_chk_table->size_in_bytes(), oopSize); | |
| 889 | |
| 1748 | 890 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
| 891 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
| 892 _osr_entry_point = code_begin() + offsets->value(CodeOffsets::OSR_Entry); | |
| 0 | 893 _exception_cache = NULL; |
| 894 _pc_desc_cache.reset_to(scopes_pcs_begin()); | |
| 895 | |
| 896 // Copy contents of ScopeDescRecorder to nmethod | |
|
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897 code_buffer->copy_values_to(this); |
| 0 | 898 debug_info->copy_to(this); |
| 899 dependencies->copy_to(this); | |
|
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900 if (ScavengeRootsInCode) { |
|
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901 if (detect_scavenge_root_oops()) { |
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902 CodeCache::add_scavenge_root_nmethod(this); |
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903 } |
| 12080 | 904 Universe::heap()->register_nmethod(this); |
|
989
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905 } |
|
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906 debug_only(verify_scavenge_root_oops()); |
| 0 | 907 |
| 908 CodeCache::commit(this); | |
| 909 | |
| 910 // Copy contents of ExceptionHandlerTable to nmethod | |
| 911 handler_table->copy_to(this); | |
| 912 nul_chk_table->copy_to(this); | |
| 913 | |
| 914 // we use the information of entry points to find out if a method is | |
| 915 // static or non static | |
| 916 assert(compiler->is_c2() || | |
| 917 _method->is_static() == (entry_point() == _verified_entry_point), | |
| 918 " entry points must be same for static methods and vice versa"); | |
| 919 } | |
| 920 | |
|
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|
921 bool printnmethods = PrintNMethods |
|
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922 || CompilerOracle::should_print(_method) |
|
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923 || CompilerOracle::has_option_string(_method, "PrintNMethods"); |
| 0 | 924 if (printnmethods || PrintDebugInfo || PrintRelocations || PrintDependencies || PrintExceptionHandlers) { |
| 925 print_nmethod(printnmethods); | |
| 926 } | |
| 927 } | |
| 928 | |
| 929 | |
| 930 // Print a short set of xml attributes to identify this nmethod. The | |
| 931 // output should be embedded in some other element. | |
| 932 void nmethod::log_identity(xmlStream* log) const { | |
| 933 log->print(" compile_id='%d'", compile_id()); | |
| 934 const char* nm_kind = compile_kind(); | |
| 935 if (nm_kind != NULL) log->print(" compile_kind='%s'", nm_kind); | |
| 936 if (compiler() != NULL) { | |
| 937 log->print(" compiler='%s'", compiler()->name()); | |
| 938 } | |
| 1783 | 939 if (TieredCompilation) { |
| 940 log->print(" level='%d'", comp_level()); | |
| 941 } | |
| 0 | 942 } |
| 943 | |
| 944 | |
| 945 #define LOG_OFFSET(log, name) \ | |
| 946 if ((intptr_t)name##_end() - (intptr_t)name##_begin()) \ | |
| 947 log->print(" " XSTR(name) "_offset='%d'" , \ | |
| 948 (intptr_t)name##_begin() - (intptr_t)this) | |
| 949 | |
| 950 | |
| 951 void nmethod::log_new_nmethod() const { | |
| 952 if (LogCompilation && xtty != NULL) { | |
| 953 ttyLocker ttyl; | |
| 954 HandleMark hm; | |
| 955 xtty->begin_elem("nmethod"); | |
| 956 log_identity(xtty); | |
| 1748 | 957 xtty->print(" entry='" INTPTR_FORMAT "' size='%d'", code_begin(), size()); |
| 0 | 958 xtty->print(" address='" INTPTR_FORMAT "'", (intptr_t) this); |
| 959 | |
| 960 LOG_OFFSET(xtty, relocation); | |
|
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961 LOG_OFFSET(xtty, consts); |
| 1748 | 962 LOG_OFFSET(xtty, insts); |
| 0 | 963 LOG_OFFSET(xtty, stub); |
| 964 LOG_OFFSET(xtty, scopes_data); | |
| 965 LOG_OFFSET(xtty, scopes_pcs); | |
| 966 LOG_OFFSET(xtty, dependencies); | |
| 967 LOG_OFFSET(xtty, handler_table); | |
| 968 LOG_OFFSET(xtty, nul_chk_table); | |
| 969 LOG_OFFSET(xtty, oops); | |
| 970 | |
| 971 xtty->method(method()); | |
| 972 xtty->stamp(); | |
| 973 xtty->end_elem(); | |
| 974 } | |
| 975 } | |
| 976 | |
| 977 #undef LOG_OFFSET | |
| 978 | |
| 979 | |
| 980 // Print out more verbose output usually for a newly created nmethod. | |
|
2405
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|
981 void nmethod::print_on(outputStream* st, const char* msg) const { |
| 0 | 982 if (st != NULL) { |
| 983 ttyLocker ttyl; | |
|
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984 if (WizardMode) { |
|
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985 CompileTask::print_compilation(st, this, msg, /*short_form:*/ true); |
|
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986 st->print_cr(" (" INTPTR_FORMAT ")", this); |
|
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987 } else { |
|
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988 CompileTask::print_compilation(st, this, msg, /*short_form:*/ false); |
|
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|
989 } |
| 0 | 990 } |
| 991 } | |
| 992 | |
| 993 | |
| 994 void nmethod::print_nmethod(bool printmethod) { | |
| 995 ttyLocker ttyl; // keep the following output all in one block | |
| 996 if (xtty != NULL) { | |
| 997 xtty->begin_head("print_nmethod"); | |
| 998 xtty->stamp(); | |
| 999 xtty->end_head(); | |
| 1000 } | |
| 1001 // print the header part first | |
| 1002 print(); | |
| 1003 // then print the requested information | |
| 1004 if (printmethod) { | |
| 1005 print_code(); | |
| 1006 print_pcs(); | |
|
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|
1007 if (oop_maps()) { |
|
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|
1008 oop_maps()->print(); |
|
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|
1009 } |
| 0 | 1010 } |
| 1011 if (PrintDebugInfo) { | |
| 1012 print_scopes(); | |
| 1013 } | |
| 1014 if (PrintRelocations) { | |
| 1015 print_relocations(); | |
| 1016 } | |
| 1017 if (PrintDependencies) { | |
| 1018 print_dependencies(); | |
| 1019 } | |
| 1020 if (PrintExceptionHandlers) { | |
| 1021 print_handler_table(); | |
| 1022 print_nul_chk_table(); | |
| 1023 } | |
| 1024 if (xtty != NULL) { | |
| 1025 xtty->tail("print_nmethod"); | |
| 1026 } | |
| 1027 } | |
| 1028 | |
| 1029 | |
|
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1030 // Promote one word from an assembly-time handle to a live embedded oop. |
|
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|
1031 inline void nmethod::initialize_immediate_oop(oop* dest, jobject handle) { |
|
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|
1032 if (handle == NULL || |
|
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1033 // As a special case, IC oops are initialized to 1 or -1. |
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1034 handle == (jobject) Universe::non_oop_word()) { |
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1035 (*dest) = (oop) handle; |
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1036 } else { |
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1037 (*dest) = JNIHandles::resolve_non_null(handle); |
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1038 } |
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1039 } |
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1040 |
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1041 |
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1042 // Have to have the same name because it's called by a template |
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1043 void nmethod::copy_values(GrowableArray<jobject>* array) { |
|
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1044 int length = array->length(); |
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1045 assert((address)(oops_begin() + length) <= (address)oops_end(), "oops big enough"); |
|
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1046 oop* dest = oops_begin(); |
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1047 for (int index = 0 ; index < length; index++) { |
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1048 initialize_immediate_oop(&dest[index], array->at(index)); |
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1049 } |
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1050 |
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1051 // Now we can fix up all the oops in the code. We need to do this |
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1052 // in the code because the assembler uses jobjects as placeholders. |
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1053 // The code and relocations have already been initialized by the |
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1054 // CodeBlob constructor, so it is valid even at this early point to |
|
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1055 // iterate over relocations and patch the code. |
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1056 fix_oop_relocations(NULL, NULL, /*initialize_immediates=*/ true); |
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1057 } |
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1058 |
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1059 void nmethod::copy_values(GrowableArray<Metadata*>* array) { |
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1060 int length = array->length(); |
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1061 assert((address)(metadata_begin() + length) <= (address)metadata_end(), "big enough"); |
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1062 Metadata** dest = metadata_begin(); |
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1063 for (int index = 0 ; index < length; index++) { |
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1064 dest[index] = array->at(index); |
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1065 } |
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1066 } |
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1067 |
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1068 bool nmethod::is_at_poll_return(address pc) { |
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1069 RelocIterator iter(this, pc, pc+1); |
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1070 while (iter.next()) { |
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1071 if (iter.type() == relocInfo::poll_return_type) |
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1072 return true; |
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1073 } |
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1074 return false; |
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1075 } |
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1076 |
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1077 |
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1078 bool nmethod::is_at_poll_or_poll_return(address pc) { |
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1079 RelocIterator iter(this, pc, pc+1); |
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1080 while (iter.next()) { |
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1081 relocInfo::relocType t = iter.type(); |
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1082 if (t == relocInfo::poll_return_type || t == relocInfo::poll_type) |
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1083 return true; |
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1084 } |
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1085 return false; |
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1086 } |
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1087 |
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1088 |
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1089 void nmethod::fix_oop_relocations(address begin, address end, bool initialize_immediates) { |
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1090 // re-patch all oop-bearing instructions, just in case some oops moved |
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1091 RelocIterator iter(this, begin, end); |
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1092 while (iter.next()) { |
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1093 if (iter.type() == relocInfo::oop_type) { |
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1094 oop_Relocation* reloc = iter.oop_reloc(); |
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1095 if (initialize_immediates && reloc->oop_is_immediate()) { |
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1096 oop* dest = reloc->oop_addr(); |
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1097 initialize_immediate_oop(dest, (jobject) *dest); |
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1098 } |
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1099 // Refresh the oop-related bits of this instruction. |
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1100 reloc->fix_oop_relocation(); |
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1101 } else if (iter.type() == relocInfo::metadata_type) { |
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1102 metadata_Relocation* reloc = iter.metadata_reloc(); |
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1103 reloc->fix_metadata_relocation(); |
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1104 } |
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1105 } |
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1106 } |
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1107 |
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1108 |
|
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1109 void nmethod::verify_oop_relocations() { |
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1110 // Ensure sure that the code matches the current oop values |
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1111 RelocIterator iter(this, NULL, NULL); |
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1112 while (iter.next()) { |
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1113 if (iter.type() == relocInfo::oop_type) { |
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1114 oop_Relocation* reloc = iter.oop_reloc(); |
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1115 if (!reloc->oop_is_immediate()) { |
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1116 reloc->verify_oop_relocation(); |
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1117 } |
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1118 } |
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1119 } |
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1120 } |
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1121 |
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1122 |
| 0 | 1123 ScopeDesc* nmethod::scope_desc_at(address pc) { |
| 1124 PcDesc* pd = pc_desc_at(pc); | |
| 1125 guarantee(pd != NULL, "scope must be present"); | |
| 1126 return new ScopeDesc(this, pd->scope_decode_offset(), | |
|
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1127 pd->obj_decode_offset(), pd->should_reexecute(), |
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1128 pd->return_oop()); |
| 0 | 1129 } |
| 1130 | |
| 1131 | |
| 1132 void nmethod::clear_inline_caches() { | |
| 1133 assert(SafepointSynchronize::is_at_safepoint(), "cleaning of IC's only allowed at safepoint"); | |
| 1134 if (is_zombie()) { | |
| 1135 return; | |
| 1136 } | |
| 1137 | |
| 1138 RelocIterator iter(this); | |
| 1139 while (iter.next()) { | |
| 1140 iter.reloc()->clear_inline_cache(); | |
| 1141 } | |
| 1142 } | |
| 1143 | |
| 1144 | |
| 1145 void nmethod::cleanup_inline_caches() { | |
| 1146 | |
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1147 assert_locked_or_safepoint(CompiledIC_lock); |
| 0 | 1148 |
| 1149 // If the method is not entrant or zombie then a JMP is plastered over the | |
| 1150 // first few bytes. If an oop in the old code was there, that oop | |
| 1151 // should not get GC'd. Skip the first few bytes of oops on | |
| 1152 // not-entrant methods. | |
| 1153 address low_boundary = verified_entry_point(); | |
| 1154 if (!is_in_use()) { | |
| 1155 low_boundary += NativeJump::instruction_size; | |
| 1156 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
| 1157 // This means that the low_boundary is going to be a little too high. | |
| 1158 // This shouldn't matter, since oops of non-entrant methods are never used. | |
| 1159 // In fact, why are we bothering to look at oops in a non-entrant method?? | |
| 1160 } | |
| 1161 | |
| 1162 // Find all calls in an nmethod, and clear the ones that points to zombie methods | |
| 1163 ResourceMark rm; | |
| 1164 RelocIterator iter(this, low_boundary); | |
| 1165 while(iter.next()) { | |
| 1166 switch(iter.type()) { | |
| 1167 case relocInfo::virtual_call_type: | |
| 1168 case relocInfo::opt_virtual_call_type: { | |
|
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1169 CompiledIC *ic = CompiledIC_at(&iter); |
| 0 | 1170 // Ok, to lookup references to zombies here |
| 1171 CodeBlob *cb = CodeCache::find_blob_unsafe(ic->ic_destination()); | |
| 1172 if( cb != NULL && cb->is_nmethod() ) { | |
| 1173 nmethod* nm = (nmethod*)cb; | |
| 1174 // Clean inline caches pointing to both zombie and not_entrant methods | |
| 1202 | 1175 if (!nm->is_in_use() || (nm->method()->code() != nm)) ic->set_to_clean(); |
| 0 | 1176 } |
| 1177 break; | |
| 1178 } | |
| 1179 case relocInfo::static_call_type: { | |
| 1180 CompiledStaticCall *csc = compiledStaticCall_at(iter.reloc()); | |
| 1181 CodeBlob *cb = CodeCache::find_blob_unsafe(csc->destination()); | |
| 1182 if( cb != NULL && cb->is_nmethod() ) { | |
| 1183 nmethod* nm = (nmethod*)cb; | |
| 1184 // Clean inline caches pointing to both zombie and not_entrant methods | |
| 1202 | 1185 if (!nm->is_in_use() || (nm->method()->code() != nm)) csc->set_to_clean(); |
| 0 | 1186 } |
| 1187 break; | |
| 1188 } | |
| 1189 } | |
| 1190 } | |
| 1191 } | |
| 1192 | |
|
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1193 // This is a private interface with the sweeper. |
| 0 | 1194 void nmethod::mark_as_seen_on_stack() { |
|
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1195 assert(is_alive(), "Must be an alive method"); |
|
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1196 // Set the traversal mark to ensure that the sweeper does 2 |
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1197 // cleaning passes before moving to zombie. |
| 0 | 1198 set_stack_traversal_mark(NMethodSweeper::traversal_count()); |
| 1199 } | |
| 1200 | |
|
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1201 // Tell if a non-entrant method can be converted to a zombie (i.e., |
|
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1202 // there are no activations on the stack, not in use by the VM, |
|
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|
1203 // and not in use by the ServiceThread) |
| 0 | 1204 bool nmethod::can_not_entrant_be_converted() { |
| 1205 assert(is_not_entrant(), "must be a non-entrant method"); | |
| 1206 | |
| 1207 // Since the nmethod sweeper only does partial sweep the sweeper's traversal | |
| 1208 // count can be greater than the stack traversal count before it hits the | |
| 1209 // nmethod for the second time. | |
|
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1210 return stack_traversal_mark()+1 < NMethodSweeper::traversal_count() && |
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1211 !is_locked_by_vm(); |
| 0 | 1212 } |
| 1213 | |
| 1214 void nmethod::inc_decompile_count() { | |
| 1783 | 1215 if (!is_compiled_by_c2()) return; |
| 0 | 1216 // Could be gated by ProfileTraps, but do not bother... |
|
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1217 Method* m = method(); |
| 0 | 1218 if (m == NULL) return; |
|
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1219 MethodData* mdo = m->method_data(); |
| 0 | 1220 if (mdo == NULL) return; |
|
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1221 // There is a benign race here. See comments in methodData.hpp. |
| 0 | 1222 mdo->inc_decompile_count(); |
| 1223 } | |
| 1224 | |
| 1225 void nmethod::make_unloaded(BoolObjectClosure* is_alive, oop cause) { | |
| 1226 | |
| 1227 post_compiled_method_unload(); | |
| 1228 | |
| 1229 // Since this nmethod is being unloaded, make sure that dependencies | |
| 1230 // recorded in instanceKlasses get flushed and pass non-NULL closure to | |
| 1231 // indicate that this work is being done during a GC. | |
| 1232 assert(Universe::heap()->is_gc_active(), "should only be called during gc"); | |
| 1233 assert(is_alive != NULL, "Should be non-NULL"); | |
| 1234 // A non-NULL is_alive closure indicates that this is being called during GC. | |
| 1235 flush_dependencies(is_alive); | |
| 1236 | |
| 1237 // Break cycle between nmethod & method | |
| 1238 if (TraceClassUnloading && WizardMode) { | |
| 1239 tty->print_cr("[Class unloading: Making nmethod " INTPTR_FORMAT | |
|
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1240 " unloadable], Method*(" INTPTR_FORMAT |
| 0 | 1241 "), cause(" INTPTR_FORMAT ")", |
| 1242 this, (address)_method, (address)cause); | |
|
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1243 if (!Universe::heap()->is_gc_active()) |
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1244 cause->klass()->print(); |
| 0 | 1245 } |
| 941 | 1246 // Unlink the osr method, so we do not look this up again |
| 1247 if (is_osr_method()) { | |
| 1248 invalidate_osr_method(); | |
| 1249 } | |
|
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1250 // If _method is already NULL the Method* is about to be unloaded, |
| 0 | 1251 // so we don't have to break the cycle. Note that it is possible to |
|
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1252 // have the Method* live here, in case we unload the nmethod because |
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1253 // it is pointing to some oop (other than the Method*) being unloaded. |
| 0 | 1254 if (_method != NULL) { |
|
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1255 // OSR methods point to the Method*, but the Method* does not |
| 0 | 1256 // point back! |
| 1257 if (_method->code() == this) { | |
| 1258 _method->clear_code(); // Break a cycle | |
| 1259 } | |
| 1260 _method = NULL; // Clear the method of this dead nmethod | |
| 1261 } | |
| 1262 // Make the class unloaded - i.e., change state and notify sweeper | |
|
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1263 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint"); |
| 0 | 1264 if (is_in_use()) { |
| 1265 // Transitioning directly from live to unloaded -- so | |
| 1266 // we need to force a cache clean-up; remember this | |
| 1267 // for later on. | |
| 1268 CodeCache::set_needs_cache_clean(true); | |
| 1269 } | |
|
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1270 _state = unloaded; |
| 0 | 1271 |
|
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1272 // Log the unloading. |
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1273 log_state_change(); |
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1274 |
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1275 // The Method* is gone at this point |
| 0 | 1276 assert(_method == NULL, "Tautology"); |
| 1277 | |
|
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1278 set_osr_link(NULL); |
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1279 //set_scavenge_root_link(NULL); // done by prune_scavenge_root_nmethods |
|
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1280 NMethodSweeper::report_state_change(this); |
| 0 | 1281 } |
| 1282 | |
| 1283 void nmethod::invalidate_osr_method() { | |
| 1284 assert(_entry_bci != InvocationEntryBci, "wrong kind of nmethod"); | |
| 1285 // Remove from list of active nmethods | |
| 1286 if (method() != NULL) | |
|
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1287 method()->method_holder()->remove_osr_nmethod(this); |
| 0 | 1288 // Set entry as invalid |
| 1289 _entry_bci = InvalidOSREntryBci; | |
| 1290 } | |
| 1291 | |
|
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1292 void nmethod::log_state_change() const { |
| 0 | 1293 if (LogCompilation) { |
| 1294 if (xtty != NULL) { | |
| 1295 ttyLocker ttyl; // keep the following output all in one block | |
|
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1296 if (_state == unloaded) { |
|
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1297 xtty->begin_elem("make_unloaded thread='" UINTX_FORMAT "'", |
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1298 os::current_thread_id()); |
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1299 } else { |
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1300 xtty->begin_elem("make_not_entrant thread='" UINTX_FORMAT "'%s", |
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1301 os::current_thread_id(), |
|
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1302 (_state == zombie ? " zombie='1'" : "")); |
|
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1303 } |
| 0 | 1304 log_identity(xtty); |
| 1305 xtty->stamp(); | |
| 1306 xtty->end_elem(); | |
| 1307 } | |
| 1308 } | |
|
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1309 if (PrintCompilation && _state != unloaded) { |
|
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1310 print_on(tty, _state == zombie ? "made zombie" : "made not entrant"); |
| 0 | 1311 } |
| 1312 } | |
| 1313 | |
|
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1314 /** |
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1315 * Common functionality for both make_not_entrant and make_zombie |
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1316 */ |
| 1141 | 1317 bool nmethod::make_not_entrant_or_zombie(unsigned int state) { |
| 0 | 1318 assert(state == zombie || state == not_entrant, "must be zombie or not_entrant"); |
|
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1319 assert(!is_zombie(), "should not already be a zombie"); |
| 0 | 1320 |
|
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1321 // Make sure neither the nmethod nor the method is flushed in case of a safepoint in code below. |
| 0 | 1322 nmethodLocker nml(this); |
|
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1323 methodHandle the_method(method()); |
| 1726 | 1324 No_Safepoint_Verifier nsv; |
| 0 | 1325 |
| 12080 | 1326 // during patching, depending on the nmethod state we must notify the GC that |
| 1327 // code has been unloaded, unregistering it. We cannot do this right while | |
| 1328 // holding the Patching_lock because we need to use the CodeCache_lock. This | |
| 1329 // would be prone to deadlocks. | |
| 1330 // This flag is used to remember whether we need to later lock and unregister. | |
| 1331 bool nmethod_needs_unregister = false; | |
| 1332 | |
| 0 | 1333 { |
|
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1334 // invalidate osr nmethod before acquiring the patching lock since |
|
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1335 // they both acquire leaf locks and we don't want a deadlock. |
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1336 // This logic is equivalent to the logic below for patching the |
|
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1337 // verified entry point of regular methods. |
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1338 if (is_osr_method()) { |
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1339 // this effectively makes the osr nmethod not entrant |
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1340 invalidate_osr_method(); |
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1341 } |
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1342 |
| 0 | 1343 // Enter critical section. Does not block for safepoint. |
| 1344 MutexLockerEx pl(Patching_lock, Mutex::_no_safepoint_check_flag); | |
|
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1345 |
|
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1346 if (_state == state) { |
|
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1347 // another thread already performed this transition so nothing |
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1348 // to do, but return false to indicate this. |
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1349 return false; |
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1350 } |
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1351 |
| 0 | 1352 // The caller can be calling the method statically or through an inline |
| 1353 // cache call. | |
|
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1354 if (!is_osr_method() && !is_not_entrant()) { |
| 0 | 1355 NativeJump::patch_verified_entry(entry_point(), verified_entry_point(), |
| 1356 SharedRuntime::get_handle_wrong_method_stub()); | |
| 1357 } | |
| 1358 | |
|
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1359 if (is_in_use()) { |
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1360 // It's a true state change, so mark the method as decompiled. |
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1361 // Do it only for transition from alive. |
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1362 inc_decompile_count(); |
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1363 } |
|
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1364 |
| 12080 | 1365 // If the state is becoming a zombie, signal to unregister the nmethod with |
| 1366 // the heap. | |
| 1367 // This nmethod may have already been unloaded during a full GC. | |
| 1368 if ((state == zombie) && !is_unloaded()) { | |
| 1369 nmethod_needs_unregister = true; | |
| 1370 } | |
| 1371 | |
|
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1372 // Must happen before state change. Otherwise we have a race condition in |
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1373 // nmethod::can_not_entrant_be_converted(). I.e., a method can immediately |
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1374 // transition its state from 'not_entrant' to 'zombie' without having to wait |
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1375 // for stack scanning. |
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1376 if (state == not_entrant) { |
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1377 mark_as_seen_on_stack(); |
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1378 OrderAccess::storestore(); |
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1379 } |
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1380 |
| 0 | 1381 // Change state |
|
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1382 _state = state; |
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1383 |
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1384 // Log the transition once |
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1385 log_state_change(); |
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1386 |
|
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1387 // Remove nmethod from method. |
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1388 // We need to check if both the _code and _from_compiled_code_entry_point |
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1389 // refer to this nmethod because there is a race in setting these two fields |
|
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1390 // in Method* as seen in bugid 4947125. |
|
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1391 // If the vep() points to the zombie nmethod, the memory for the nmethod |
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1392 // could be flushed and the compiler and vtable stubs could still call |
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1393 // through it. |
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1394 if (method() != NULL && (method()->code() == this || |
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1395 method()->from_compiled_entry() == verified_entry_point())) { |
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1396 HandleMark hm; |
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1397 method()->clear_code(); |
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1398 } |
| 0 | 1399 } // leave critical region under Patching_lock |
| 1400 | |
|
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1401 // When the nmethod becomes zombie it is no longer alive so the |
|
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1402 // dependencies must be flushed. nmethods in the not_entrant |
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1403 // state will be flushed later when the transition to zombie |
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1404 // happens or they get unloaded. |
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|
1405 if (state == zombie) { |
| 1726 | 1406 { |
| 1407 // Flushing dependecies must be done before any possible | |
| 1408 // safepoint can sneak in, otherwise the oops used by the | |
| 1409 // dependency logic could have become stale. | |
| 1410 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
| 12080 | 1411 if (nmethod_needs_unregister) { |
| 1412 Universe::heap()->unregister_nmethod(this); | |
| 1413 } | |
| 1726 | 1414 flush_dependencies(NULL); |
| 1415 } | |
|
1644
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|
1416 |
|
2342
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1417 // zombie only - if a JVMTI agent has enabled the CompiledMethodUnload |
|
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|
1418 // event and it hasn't already been reported for this nmethod then |
|
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1419 // report it now. The event may have been reported earilier if the GC |
|
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|
1420 // marked it for unloading). JvmtiDeferredEventQueue support means |
|
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|
1421 // we no longer go to a safepoint here. |
|
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|
1422 post_compiled_method_unload(); |
| 1726 | 1423 |
| 1424 #ifdef ASSERT | |
| 1425 // It's no longer safe to access the oops section since zombie | |
| 1426 // nmethods aren't scanned for GC. | |
| 1427 _oops_are_stale = true; | |
| 1428 #endif | |
|
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|
1429 // the Method may be reclaimed by class unloading now that the |
|
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|
1430 // nmethod is in zombie state |
|
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|
1431 set_method(NULL); |
|
1538
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|
1432 } else { |
|
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1433 assert(state == not_entrant, "other cases may need to be handled differently"); |
|
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|
1434 } |
|
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|
1435 |
| 0 | 1436 if (TraceCreateZombies) { |
| 1437 tty->print_cr("nmethod <" INTPTR_FORMAT "> code made %s", this, (state == not_entrant) ? "not entrant" : "zombie"); | |
| 1438 } | |
| 1439 | |
|
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|
1440 NMethodSweeper::report_state_change(this); |
|
1109
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5057818: codecache full and compiler disabled in bigapps fastdebug run
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|
1441 return true; |
| 0 | 1442 } |
| 1443 | |
| 1444 void nmethod::flush() { | |
| 1445 // Note that there are no valid oops in the nmethod anymore. | |
| 1446 assert(is_zombie() || (is_osr_method() && is_unloaded()), "must be a zombie method"); | |
| 1447 assert(is_marked_for_reclamation() || (is_osr_method() && is_unloaded()), "must be marked for reclamation"); | |
| 1448 | |
| 1449 assert (!is_locked_by_vm(), "locked methods shouldn't be flushed"); | |
|
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|
1450 assert_locked_or_safepoint(CodeCache_lock); |
| 0 | 1451 |
| 1452 // completely deallocate this method | |
|
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|
1453 Events::log(JavaThread::current(), "flushing nmethod " INTPTR_FORMAT, this); |
| 0 | 1454 if (PrintMethodFlushing) { |
| 1202 | 1455 tty->print_cr("*flushing nmethod %3d/" INTPTR_FORMAT ". Live blobs:" UINT32_FORMAT "/Free CodeCache:" SIZE_FORMAT "Kb", |
| 1456 _compile_id, this, CodeCache::nof_blobs(), CodeCache::unallocated_capacity()/1024); | |
| 0 | 1457 } |
| 1458 | |
| 1459 // We need to deallocate any ExceptionCache data. | |
| 1460 // Note that we do not need to grab the nmethod lock for this, it | |
| 1461 // better be thread safe if we're disposing of it! | |
| 1462 ExceptionCache* ec = exception_cache(); | |
| 1463 set_exception_cache(NULL); | |
| 1464 while(ec != NULL) { | |
| 1465 ExceptionCache* next = ec->next(); | |
| 1466 delete ec; | |
| 1467 ec = next; | |
| 1468 } | |
| 1469 | |
|
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|
1470 if (on_scavenge_root_list()) { |
|
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|
1471 CodeCache::drop_scavenge_root_nmethod(this); |
|
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|
1472 } |
|
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|
1473 |
| 1692 | 1474 #ifdef SHARK |
|
1845
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|
1475 ((SharkCompiler *) compiler())->free_compiled_method(insts_begin()); |
| 1692 | 1476 #endif // SHARK |
| 1477 | |
| 0 | 1478 ((CodeBlob*)(this))->flush(); |
| 1479 | |
| 1480 CodeCache::free(this); | |
| 1481 } | |
| 1482 | |
| 1483 | |
| 1484 // | |
| 1485 // Notify all classes this nmethod is dependent on that it is no | |
| 1486 // longer dependent. This should only be called in two situations. | |
| 1487 // First, when a nmethod transitions to a zombie all dependents need | |
| 1488 // to be clear. Since zombification happens at a safepoint there's no | |
| 1489 // synchronization issues. The second place is a little more tricky. | |
| 1490 // During phase 1 of mark sweep class unloading may happen and as a | |
| 1491 // result some nmethods may get unloaded. In this case the flushing | |
| 1492 // of dependencies must happen during phase 1 since after GC any | |
| 1493 // dependencies in the unloaded nmethod won't be updated, so | |
| 1494 // traversing the dependency information in unsafe. In that case this | |
| 1495 // function is called with a non-NULL argument and this function only | |
| 1496 // notifies instanceKlasses that are reachable | |
| 1497 | |
| 1498 void nmethod::flush_dependencies(BoolObjectClosure* is_alive) { | |
|
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|
1499 assert_locked_or_safepoint(CodeCache_lock); |
| 0 | 1500 assert(Universe::heap()->is_gc_active() == (is_alive != NULL), |
| 1501 "is_alive is non-NULL if and only if we are called during GC"); | |
| 1502 if (!has_flushed_dependencies()) { | |
| 1503 set_has_flushed_dependencies(); | |
| 1504 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
|
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|
1505 Klass* klass = deps.context_type(); |
| 0 | 1506 if (klass == NULL) continue; // ignore things like evol_method |
| 1507 | |
| 1508 // During GC the is_alive closure is non-NULL, and is used to | |
| 1509 // determine liveness of dependees that need to be updated. | |
|
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|
1510 if (is_alive == NULL || klass->is_loader_alive(is_alive)) { |
|
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|
1511 InstanceKlass::cast(klass)->remove_dependent_nmethod(this); |
| 0 | 1512 } |
| 1513 } | |
| 1514 } | |
| 1515 } | |
| 1516 | |
| 1517 | |
| 1518 // If this oop is not live, the nmethod can be unloaded. | |
|
6787
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7200470: KeepAliveClosure not needed in CodeCache::do_unloading
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6725
diff
changeset
|
1519 bool nmethod::can_unload(BoolObjectClosure* is_alive, oop* root, bool unloading_occurred) { |
| 0 | 1520 assert(root != NULL, "just checking"); |
| 1521 oop obj = *root; | |
| 1522 if (obj == NULL || is_alive->do_object_b(obj)) { | |
| 1523 return false; | |
| 1524 } | |
|
6725
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|
1525 |
|
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|
1526 // If ScavengeRootsInCode is true, an nmethod might be unloaded |
|
148e5441d916
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|
1527 // simply because one of its constant oops has gone dead. |
|
148e5441d916
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diff
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|
1528 // No actual classes need to be unloaded in order for this to occur. |
|
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diff
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|
1529 assert(unloading_occurred || ScavengeRootsInCode, "Inconsistency in unloading"); |
| 0 | 1530 make_unloaded(is_alive, obj); |
| 1531 return true; | |
| 1532 } | |
| 1533 | |
| 1534 // ------------------------------------------------------------------ | |
| 1535 // post_compiled_method_load_event | |
| 1536 // new method for install_code() path | |
| 1537 // Transfer information from compilation to jvmti | |
| 1538 void nmethod::post_compiled_method_load_event() { | |
| 1539 | |
|
6725
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|
1540 Method* moop = method(); |
| 4006 | 1541 #ifndef USDT2 |
| 0 | 1542 HS_DTRACE_PROBE8(hotspot, compiled__method__load, |
| 1543 moop->klass_name()->bytes(), | |
| 1544 moop->klass_name()->utf8_length(), | |
| 1545 moop->name()->bytes(), | |
| 1546 moop->name()->utf8_length(), | |
| 1547 moop->signature()->bytes(), | |
| 1548 moop->signature()->utf8_length(), | |
| 1748 | 1549 insts_begin(), insts_size()); |
| 4006 | 1550 #else /* USDT2 */ |
| 1551 HOTSPOT_COMPILED_METHOD_LOAD( | |
| 1552 (char *) moop->klass_name()->bytes(), | |
| 1553 moop->klass_name()->utf8_length(), | |
| 1554 (char *) moop->name()->bytes(), | |
| 1555 moop->name()->utf8_length(), | |
| 1556 (char *) moop->signature()->bytes(), | |
| 1557 moop->signature()->utf8_length(), | |
| 1558 insts_begin(), insts_size()); | |
| 1559 #endif /* USDT2 */ | |
| 0 | 1560 |
|
1616
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parents:
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|
1561 if (JvmtiExport::should_post_compiled_method_load() || |
|
38e8278318ca
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parents:
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diff
changeset
|
1562 JvmtiExport::should_post_compiled_method_unload()) { |
|
38e8278318ca
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diff
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|
1563 get_and_cache_jmethod_id(); |
|
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diff
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|
1564 } |
|
38e8278318ca
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|
1565 |
| 0 | 1566 if (JvmtiExport::should_post_compiled_method_load()) { |
|
2195
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|
1567 // Let the Service thread (which is a real Java thread) post the event |
|
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|
1568 MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag); |
|
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|
1569 JvmtiDeferredEventQueue::enqueue( |
|
bf8517f4e4d0
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|
1570 JvmtiDeferredEvent::compiled_method_load_event(this)); |
| 0 | 1571 } |
| 1572 } | |
| 1573 | |
|
1616
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
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parents:
1602
diff
changeset
|
1574 jmethodID nmethod::get_and_cache_jmethod_id() { |
|
38e8278318ca
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parents:
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diff
changeset
|
1575 if (_jmethod_id == NULL) { |
|
38e8278318ca
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parents:
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diff
changeset
|
1576 // Cache the jmethod_id since it can no longer be looked up once the |
|
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
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diff
changeset
|
1577 // method itself has been marked for unloading. |
|
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
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parents:
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diff
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|
1578 _jmethod_id = method()->jmethod_id(); |
|
38e8278318ca
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diff
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|
1579 } |
|
38e8278318ca
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parents:
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diff
changeset
|
1580 return _jmethod_id; |
|
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diff
changeset
|
1581 } |
|
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|
1582 |
| 0 | 1583 void nmethod::post_compiled_method_unload() { |
|
1577
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|
1584 if (unload_reported()) { |
|
852d0157c696
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|
1585 // During unloading we transition to unloaded and then to zombie |
|
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|
1586 // and the unloading is reported during the first transition. |
|
852d0157c696
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|
1587 return; |
|
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|
1588 } |
|
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parents:
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diff
changeset
|
1589 |
| 0 | 1590 assert(_method != NULL && !is_unloaded(), "just checking"); |
| 1591 DTRACE_METHOD_UNLOAD_PROBE(method()); | |
| 1592 | |
| 1593 // If a JVMTI agent has enabled the CompiledMethodUnload event then | |
|
1616
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diff
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|
1594 // post the event. Sometime later this nmethod will be made a zombie |
|
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|
1595 // by the sweeper but the Method* will not be valid at that point. |
|
1616
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|
1596 // If the _jmethod_id is null then no load event was ever requested |
|
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diff
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|
1597 // so don't bother posting the unload. The main reason for this is |
|
6725
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|
1598 // that the jmethodID is a weak reference to the Method* so if |
|
1616
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diff
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|
1599 // it's being unloaded there's no way to look it up since the weak |
|
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|
1600 // ref will have been cleared. |
|
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parents:
1602
diff
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|
1601 if (_jmethod_id != NULL && JvmtiExport::should_post_compiled_method_unload()) { |
| 0 | 1602 assert(!unload_reported(), "already unloaded"); |
|
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|
1603 JvmtiDeferredEvent event = |
|
2342
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|
1604 JvmtiDeferredEvent::compiled_method_unload_event(this, |
|
2195
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|
1605 _jmethod_id, insts_begin()); |
|
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|
1606 if (SafepointSynchronize::is_at_safepoint()) { |
|
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|
1607 // Don't want to take the queueing lock. Add it as pending and |
|
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|
1608 // it will get enqueued later. |
|
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|
1609 JvmtiDeferredEventQueue::add_pending_event(event); |
|
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|
1610 } else { |
|
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|
1611 MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag); |
|
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|
1612 JvmtiDeferredEventQueue::enqueue(event); |
|
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|
1613 } |
| 0 | 1614 } |
| 1615 | |
| 1616 // The JVMTI CompiledMethodUnload event can be enabled or disabled at | |
| 1617 // any time. As the nmethod is being unloaded now we mark it has | |
| 1618 // having the unload event reported - this will ensure that we don't | |
| 1619 // attempt to report the event in the unlikely scenario where the | |
| 1620 // event is enabled at the time the nmethod is made a zombie. | |
| 1621 set_unload_reported(); | |
| 1622 } | |
| 1623 | |
| 1624 // This is called at the end of the strong tracing/marking phase of a | |
| 1625 // GC to unload an nmethod if it contains otherwise unreachable | |
| 1626 // oops. | |
| 1627 | |
|
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1628 void nmethod::do_unloading(BoolObjectClosure* is_alive, bool unloading_occurred) { |
| 0 | 1629 // Make sure the oop's ready to receive visitors |
| 1630 assert(!is_zombie() && !is_unloaded(), | |
| 1631 "should not call follow on zombie or unloaded nmethod"); | |
| 1632 | |
| 1633 // If the method is not entrant then a JMP is plastered over the | |
| 1634 // first few bytes. If an oop in the old code was there, that oop | |
| 1635 // should not get GC'd. Skip the first few bytes of oops on | |
| 1636 // not-entrant methods. | |
| 1637 address low_boundary = verified_entry_point(); | |
| 1638 if (is_not_entrant()) { | |
| 1639 low_boundary += NativeJump::instruction_size; | |
| 1640 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
| 1641 // (See comment above.) | |
| 1642 } | |
| 1643 | |
| 1644 // The RedefineClasses() API can cause the class unloading invariant | |
| 1645 // to no longer be true. See jvmtiExport.hpp for details. | |
| 1646 // Also, leave a debugging breadcrumb in local flag. | |
| 1647 bool a_class_was_redefined = JvmtiExport::has_redefined_a_class(); | |
| 1648 if (a_class_was_redefined) { | |
| 1649 // This set of the unloading_occurred flag is done before the | |
| 1650 // call to post_compiled_method_unload() so that the unloading | |
| 1651 // of this nmethod is reported. | |
| 1652 unloading_occurred = true; | |
| 1653 } | |
| 1654 | |
| 1655 // Exception cache | |
| 20269 | 1656 clean_exception_cache(is_alive); |
| 0 | 1657 |
| 1658 // If class unloading occurred we first iterate over all inline caches and | |
| 1659 // clear ICs where the cached oop is referring to an unloaded klass or method. | |
| 1660 // The remaining live cached oops will be traversed in the relocInfo::oop_type | |
| 1661 // iteration below. | |
| 1662 if (unloading_occurred) { | |
| 1663 RelocIterator iter(this, low_boundary); | |
| 1664 while(iter.next()) { | |
| 1665 if (iter.type() == relocInfo::virtual_call_type) { | |
|
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1666 CompiledIC *ic = CompiledIC_at(&iter); |
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1667 if (ic->is_icholder_call()) { |
| 0 | 1668 // The only exception is compiledICHolder oops which may |
| 1669 // yet be marked below. (We check this further below). | |
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1670 CompiledICHolder* cichk_oop = ic->cached_icholder(); |
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1671 if (cichk_oop->holder_method()->method_holder()->is_loader_alive(is_alive) && |
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1672 cichk_oop->holder_klass()->is_loader_alive(is_alive)) { |
| 13441 | 1673 continue; |
| 1674 } | |
|
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1675 } else { |
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1676 Metadata* ic_oop = ic->cached_metadata(); |
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1677 if (ic_oop != NULL) { |
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1678 if (ic_oop->is_klass()) { |
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1679 if (((Klass*)ic_oop)->is_loader_alive(is_alive)) { |
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1680 continue; |
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1681 } |
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1682 } else if (ic_oop->is_method()) { |
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1683 if (((Method*)ic_oop)->method_holder()->is_loader_alive(is_alive)) { |
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1684 continue; |
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1685 } |
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1686 } else { |
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1687 ShouldNotReachHere(); |
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1688 } |
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1689 } |
| 13441 | 1690 } |
| 1691 ic->set_to_clean(); | |
| 0 | 1692 } |
| 1693 } | |
| 1694 } | |
| 1695 | |
| 1696 // Compiled code | |
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1697 { |
| 0 | 1698 RelocIterator iter(this, low_boundary); |
| 1699 while (iter.next()) { | |
| 1700 if (iter.type() == relocInfo::oop_type) { | |
| 1701 oop_Relocation* r = iter.oop_reloc(); | |
| 1702 // In this loop, we must only traverse those oops directly embedded in | |
| 1703 // the code. Other oops (oop_index>0) are seen as part of scopes_oops. | |
| 1704 assert(1 == (r->oop_is_immediate()) + | |
| 1705 (r->oop_addr() >= oops_begin() && r->oop_addr() < oops_end()), | |
| 1706 "oop must be found in exactly one place"); | |
| 1707 if (r->oop_is_immediate() && r->oop_value() != NULL) { | |
|
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1708 if (can_unload(is_alive, r->oop_addr(), unloading_occurred)) { |
| 0 | 1709 return; |
| 1710 } | |
| 1711 } | |
| 1712 } | |
| 1713 } | |
|
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1714 } |
| 0 | 1715 |
| 1716 | |
| 1717 // Scopes | |
| 1718 for (oop* p = oops_begin(); p < oops_end(); p++) { | |
| 1719 if (*p == Universe::non_oop_word()) continue; // skip non-oops | |
|
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1720 if (can_unload(is_alive, p, unloading_occurred)) { |
| 0 | 1721 return; |
| 1722 } | |
| 1723 } | |
| 1724 | |
|
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1725 // Ensure that all metadata is still alive |
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1726 verify_metadata_loaders(low_boundary, is_alive); |
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1727 } |
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1728 |
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1729 #ifdef ASSERT |
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1730 |
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1731 class CheckClass : AllStatic { |
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1732 static BoolObjectClosure* _is_alive; |
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1733 |
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1734 // Check class_loader is alive for this bit of metadata. |
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1735 static void check_class(Metadata* md) { |
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1736 Klass* klass = NULL; |
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1737 if (md->is_klass()) { |
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1738 klass = ((Klass*)md); |
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1739 } else if (md->is_method()) { |
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1740 klass = ((Method*)md)->method_holder(); |
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1741 } else if (md->is_methodData()) { |
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1742 klass = ((MethodData*)md)->method()->method_holder(); |
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1743 } else { |
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1744 md->print(); |
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1745 ShouldNotReachHere(); |
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1746 } |
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1747 assert(klass->is_loader_alive(_is_alive), "must be alive"); |
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1748 } |
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1749 public: |
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1750 static void do_check_class(BoolObjectClosure* is_alive, nmethod* nm) { |
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1751 assert(SafepointSynchronize::is_at_safepoint(), "this is only ok at safepoint"); |
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1752 _is_alive = is_alive; |
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1753 nm->metadata_do(check_class); |
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1754 } |
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1755 }; |
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1756 |
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1757 // This is called during a safepoint so can use static data |
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1758 BoolObjectClosure* CheckClass::_is_alive = NULL; |
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1759 #endif // ASSERT |
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1760 |
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1761 |
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1762 // Processing of oop references should have been sufficient to keep |
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1763 // all strong references alive. Any weak references should have been |
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1764 // cleared as well. Visit all the metadata and ensure that it's |
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1765 // really alive. |
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1766 void nmethod::verify_metadata_loaders(address low_boundary, BoolObjectClosure* is_alive) { |
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1767 #ifdef ASSERT |
| 0 | 1768 RelocIterator iter(this, low_boundary); |
| 1769 while (iter.next()) { | |
|
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1770 // static_stub_Relocations may have dangling references to |
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1771 // Method*s so trim them out here. Otherwise it looks like |
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1772 // compiled code is maintaining a link to dead metadata. |
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1773 address static_call_addr = NULL; |
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1774 if (iter.type() == relocInfo::opt_virtual_call_type) { |
|
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1775 CompiledIC* cic = CompiledIC_at(&iter); |
|
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1776 if (!cic->is_call_to_interpreted()) { |
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1777 static_call_addr = iter.addr(); |
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1778 } |
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1779 } else if (iter.type() == relocInfo::static_call_type) { |
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1780 CompiledStaticCall* csc = compiledStaticCall_at(iter.reloc()); |
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1781 if (!csc->is_call_to_interpreted()) { |
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1782 static_call_addr = iter.addr(); |
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1783 } |
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1784 } |
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1785 if (static_call_addr != NULL) { |
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1786 RelocIterator sciter(this, low_boundary); |
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1787 while (sciter.next()) { |
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1788 if (sciter.type() == relocInfo::static_stub_type && |
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1789 sciter.static_stub_reloc()->static_call() == static_call_addr) { |
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1790 sciter.static_stub_reloc()->clear_inline_cache(); |
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1791 } |
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1792 } |
| 0 | 1793 } |
| 1794 } | |
|
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1795 // Check that the metadata embedded in the nmethod is alive |
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1796 CheckClass::do_check_class(is_alive, this); |
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1797 #endif |
| 0 | 1798 } |
| 1799 | |
|
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1800 |
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1801 // Iterate over metadata calling this function. Used by RedefineClasses |
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1802 void nmethod::metadata_do(void f(Metadata*)) { |
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1803 address low_boundary = verified_entry_point(); |
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1804 if (is_not_entrant()) { |
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1805 low_boundary += NativeJump::instruction_size; |
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1806 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. |
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1807 // (See comment above.) |
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1808 } |
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1809 { |
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1810 // Visit all immediate references that are embedded in the instruction stream. |
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1811 RelocIterator iter(this, low_boundary); |
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1812 while (iter.next()) { |
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1813 if (iter.type() == relocInfo::metadata_type ) { |
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1814 metadata_Relocation* r = iter.metadata_reloc(); |
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1815 // In this lmetadata, we must only follow those metadatas directly embedded in |
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1816 // the code. Other metadatas (oop_index>0) are seen as part of |
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1817 // the metadata section below. |
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1818 assert(1 == (r->metadata_is_immediate()) + |
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1819 (r->metadata_addr() >= metadata_begin() && r->metadata_addr() < metadata_end()), |
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1820 "metadata must be found in exactly one place"); |
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1821 if (r->metadata_is_immediate() && r->metadata_value() != NULL) { |
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1822 Metadata* md = r->metadata_value(); |
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1823 f(md); |
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1824 } |
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1825 } else if (iter.type() == relocInfo::virtual_call_type) { |
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1826 // Check compiledIC holders associated with this nmethod |
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1827 CompiledIC *ic = CompiledIC_at(&iter); |
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1828 if (ic->is_icholder_call()) { |
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1829 CompiledICHolder* cichk = ic->cached_icholder(); |
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1830 f(cichk->holder_method()); |
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1831 f(cichk->holder_klass()); |
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1832 } else { |
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1833 Metadata* ic_oop = ic->cached_metadata(); |
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1834 if (ic_oop != NULL) { |
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1835 f(ic_oop); |
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1836 } |
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1837 } |
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1838 } |
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1839 } |
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1840 } |
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1841 |
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1842 // Visit the metadata section |
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1843 for (Metadata** p = metadata_begin(); p < metadata_end(); p++) { |
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1844 if (*p == Universe::non_oop_word() || *p == NULL) continue; // skip non-oops |
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1845 Metadata* md = *p; |
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1846 f(md); |
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1847 } |
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1848 |
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1849 // Call function Method*, not embedded in these other places. |
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1850 if (_method != NULL) f(_method); |
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1851 } |
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1852 |
| 12080 | 1853 void nmethod::oops_do(OopClosure* f, bool allow_zombie) { |
| 0 | 1854 // make sure the oops ready to receive visitors |
| 12080 | 1855 assert(allow_zombie || !is_zombie(), "should not call follow on zombie nmethod"); |
| 1856 assert(!is_unloaded(), "should not call follow on unloaded nmethod"); | |
| 0 | 1857 |
| 1858 // If the method is not entrant or zombie then a JMP is plastered over the | |
| 1859 // first few bytes. If an oop in the old code was there, that oop | |
| 1860 // should not get GC'd. Skip the first few bytes of oops on | |
| 1861 // not-entrant methods. | |
| 1862 address low_boundary = verified_entry_point(); | |
| 1863 if (is_not_entrant()) { | |
| 1864 low_boundary += NativeJump::instruction_size; | |
| 1865 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
| 1866 // (See comment above.) | |
| 1867 } | |
| 1868 | |
| 1869 RelocIterator iter(this, low_boundary); | |
| 941 | 1870 |
| 0 | 1871 while (iter.next()) { |
| 1872 if (iter.type() == relocInfo::oop_type ) { | |
| 1873 oop_Relocation* r = iter.oop_reloc(); | |
| 1874 // In this loop, we must only follow those oops directly embedded in | |
| 1875 // the code. Other oops (oop_index>0) are seen as part of scopes_oops. | |
| 941 | 1876 assert(1 == (r->oop_is_immediate()) + |
| 1877 (r->oop_addr() >= oops_begin() && r->oop_addr() < oops_end()), | |
| 1878 "oop must be found in exactly one place"); | |
| 0 | 1879 if (r->oop_is_immediate() && r->oop_value() != NULL) { |
| 1880 f->do_oop(r->oop_addr()); | |
| 1881 } | |
| 1882 } | |
| 1883 } | |
| 1884 | |
| 1885 // Scopes | |
|
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1886 // This includes oop constants not inlined in the code stream. |
| 0 | 1887 for (oop* p = oops_begin(); p < oops_end(); p++) { |
| 1888 if (*p == Universe::non_oop_word()) continue; // skip non-oops | |
| 1889 f->do_oop(p); | |
| 1890 } | |
| 1891 } | |
| 1892 | |
|
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1893 #define NMETHOD_SENTINEL ((nmethod*)badAddress) |
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1894 |
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1895 nmethod* volatile nmethod::_oops_do_mark_nmethods; |
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1896 |
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1897 // An nmethod is "marked" if its _mark_link is set non-null. |
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1898 // Even if it is the end of the linked list, it will have a non-null link value, |
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1899 // as long as it is on the list. |
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1900 // This code must be MP safe, because it is used from parallel GC passes. |
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1901 bool nmethod::test_set_oops_do_mark() { |
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1902 assert(nmethod::oops_do_marking_is_active(), "oops_do_marking_prologue must be called"); |
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1903 nmethod* observed_mark_link = _oops_do_mark_link; |
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1904 if (observed_mark_link == NULL) { |
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1905 // Claim this nmethod for this thread to mark. |
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1906 observed_mark_link = (nmethod*) |
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1907 Atomic::cmpxchg_ptr(NMETHOD_SENTINEL, &_oops_do_mark_link, NULL); |
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1908 if (observed_mark_link == NULL) { |
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1909 |
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1910 // Atomically append this nmethod (now claimed) to the head of the list: |
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1911 nmethod* observed_mark_nmethods = _oops_do_mark_nmethods; |
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1912 for (;;) { |
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1913 nmethod* required_mark_nmethods = observed_mark_nmethods; |
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1914 _oops_do_mark_link = required_mark_nmethods; |
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1915 observed_mark_nmethods = (nmethod*) |
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1916 Atomic::cmpxchg_ptr(this, &_oops_do_mark_nmethods, required_mark_nmethods); |
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1917 if (observed_mark_nmethods == required_mark_nmethods) |
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1918 break; |
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1919 } |
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1920 // Mark was clear when we first saw this guy. |
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1921 NOT_PRODUCT(if (TraceScavenge) print_on(tty, "oops_do, mark")); |
|
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1922 return false; |
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1923 } |
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1924 } |
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1925 // On fall through, another racing thread marked this nmethod before we did. |
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1926 return true; |
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1927 } |
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1928 |
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1929 void nmethod::oops_do_marking_prologue() { |
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1930 NOT_PRODUCT(if (TraceScavenge) tty->print_cr("[oops_do_marking_prologue")); |
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1931 assert(_oops_do_mark_nmethods == NULL, "must not call oops_do_marking_prologue twice in a row"); |
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1932 // We use cmpxchg_ptr instead of regular assignment here because the user |
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1933 // may fork a bunch of threads, and we need them all to see the same state. |
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1934 void* observed = Atomic::cmpxchg_ptr(NMETHOD_SENTINEL, &_oops_do_mark_nmethods, NULL); |
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1935 guarantee(observed == NULL, "no races in this sequential code"); |
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1936 } |
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1937 |
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1938 void nmethod::oops_do_marking_epilogue() { |
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1939 assert(_oops_do_mark_nmethods != NULL, "must not call oops_do_marking_epilogue twice in a row"); |
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1940 nmethod* cur = _oops_do_mark_nmethods; |
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1941 while (cur != NMETHOD_SENTINEL) { |
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1942 assert(cur != NULL, "not NULL-terminated"); |
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1943 nmethod* next = cur->_oops_do_mark_link; |
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1944 cur->_oops_do_mark_link = NULL; |
|
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1945 cur->fix_oop_relocations(); |
|
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1946 NOT_PRODUCT(if (TraceScavenge) cur->print_on(tty, "oops_do, unmark")); |
|
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1947 cur = next; |
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1948 } |
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1949 void* required = _oops_do_mark_nmethods; |
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1950 void* observed = Atomic::cmpxchg_ptr(NULL, &_oops_do_mark_nmethods, required); |
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1951 guarantee(observed == required, "no races in this sequential code"); |
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1952 NOT_PRODUCT(if (TraceScavenge) tty->print_cr("oops_do_marking_epilogue]")); |
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1953 } |
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1954 |
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1955 class DetectScavengeRoot: public OopClosure { |
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1956 bool _detected_scavenge_root; |
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1957 public: |
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1958 DetectScavengeRoot() : _detected_scavenge_root(false) |
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1959 { NOT_PRODUCT(_print_nm = NULL); } |
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1960 bool detected_scavenge_root() { return _detected_scavenge_root; } |
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1961 virtual void do_oop(oop* p) { |
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1962 if ((*p) != NULL && (*p)->is_scavengable()) { |
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1963 NOT_PRODUCT(maybe_print(p)); |
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1964 _detected_scavenge_root = true; |
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1965 } |
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1966 } |
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1967 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
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1968 |
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1969 #ifndef PRODUCT |
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1970 nmethod* _print_nm; |
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1971 void maybe_print(oop* p) { |
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1972 if (_print_nm == NULL) return; |
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1973 if (!_detected_scavenge_root) _print_nm->print_on(tty, "new scavenge root"); |
|
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1974 tty->print_cr(""PTR_FORMAT"[offset=%d] detected scavengable oop "PTR_FORMAT" (found at "PTR_FORMAT")", |
|
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1975 _print_nm, (int)((intptr_t)p - (intptr_t)_print_nm), |
|
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1976 (void *)(*p), (intptr_t)p); |
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1977 (*p)->print(); |
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1978 } |
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1979 #endif //PRODUCT |
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1980 }; |
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1981 |
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1982 bool nmethod::detect_scavenge_root_oops() { |
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1983 DetectScavengeRoot detect_scavenge_root; |
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1984 NOT_PRODUCT(if (TraceScavenge) detect_scavenge_root._print_nm = this); |
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1985 oops_do(&detect_scavenge_root); |
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1986 return detect_scavenge_root.detected_scavenge_root(); |
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1987 } |
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1988 |
| 0 | 1989 // Method that knows how to preserve outgoing arguments at call. This method must be |
| 1990 // called with a frame corresponding to a Java invoke | |
| 1991 void nmethod::preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { | |
| 1692 | 1992 #ifndef SHARK |
| 0 | 1993 if (!method()->is_native()) { |
| 1994 SimpleScopeDesc ssd(this, fr.pc()); | |
| 2142 | 1995 Bytecode_invoke call(ssd.method(), ssd.bci()); |
| 10390 | 1996 bool has_receiver = call.has_receiver(); |
| 1997 bool has_appendix = call.has_appendix(); | |
|
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1998 Symbol* signature = call.signature(); |
| 10390 | 1999 fr.oops_compiled_arguments_do(signature, has_receiver, has_appendix, reg_map, f); |
| 0 | 2000 } |
| 1692 | 2001 #endif // !SHARK |
| 0 | 2002 } |
| 2003 | |
| 2004 | |
| 2005 oop nmethod::embeddedOop_at(u_char* p) { | |
|
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2006 RelocIterator iter(this, p, p + 1); |
| 0 | 2007 while (iter.next()) |
| 2008 if (iter.type() == relocInfo::oop_type) { | |
| 2009 return iter.oop_reloc()->oop_value(); | |
| 2010 } | |
| 2011 return NULL; | |
| 2012 } | |
| 2013 | |
| 2014 | |
| 2015 inline bool includes(void* p, void* from, void* to) { | |
| 2016 return from <= p && p < to; | |
| 2017 } | |
| 2018 | |
| 2019 | |
| 2020 void nmethod::copy_scopes_pcs(PcDesc* pcs, int count) { | |
| 2021 assert(count >= 2, "must be sentinel values, at least"); | |
| 2022 | |
| 2023 #ifdef ASSERT | |
| 2024 // must be sorted and unique; we do a binary search in find_pc_desc() | |
| 2025 int prev_offset = pcs[0].pc_offset(); | |
| 2026 assert(prev_offset == PcDesc::lower_offset_limit, | |
| 2027 "must start with a sentinel"); | |
| 2028 for (int i = 1; i < count; i++) { | |
| 2029 int this_offset = pcs[i].pc_offset(); | |
| 2030 assert(this_offset > prev_offset, "offsets must be sorted"); | |
| 2031 prev_offset = this_offset; | |
| 2032 } | |
| 2033 assert(prev_offset == PcDesc::upper_offset_limit, | |
| 2034 "must end with a sentinel"); | |
| 2035 #endif //ASSERT | |
| 2036 | |
|
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2037 // Search for MethodHandle invokes and tag the nmethod. |
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2038 for (int i = 0; i < count; i++) { |
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2039 if (pcs[i].is_method_handle_invoke()) { |
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2040 set_has_method_handle_invokes(true); |
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2041 break; |
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2042 } |
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2043 } |
|
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2044 assert(has_method_handle_invokes() == (_deoptimize_mh_offset != -1), "must have deopt mh handler"); |
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2045 |
| 0 | 2046 int size = count * sizeof(PcDesc); |
| 2047 assert(scopes_pcs_size() >= size, "oob"); | |
| 2048 memcpy(scopes_pcs_begin(), pcs, size); | |
| 2049 | |
| 2050 // Adjust the final sentinel downward. | |
| 2051 PcDesc* last_pc = &scopes_pcs_begin()[count-1]; | |
| 2052 assert(last_pc->pc_offset() == PcDesc::upper_offset_limit, "sanity"); | |
| 1748 | 2053 last_pc->set_pc_offset(content_size() + 1); |
| 0 | 2054 for (; last_pc + 1 < scopes_pcs_end(); last_pc += 1) { |
| 2055 // Fill any rounding gaps with copies of the last record. | |
| 2056 last_pc[1] = last_pc[0]; | |
| 2057 } | |
| 2058 // The following assert could fail if sizeof(PcDesc) is not | |
| 2059 // an integral multiple of oopSize (the rounding term). | |
| 2060 // If it fails, change the logic to always allocate a multiple | |
| 2061 // of sizeof(PcDesc), and fill unused words with copies of *last_pc. | |
| 2062 assert(last_pc + 1 == scopes_pcs_end(), "must match exactly"); | |
| 2063 } | |
| 2064 | |
| 2065 void nmethod::copy_scopes_data(u_char* buffer, int size) { | |
| 2066 assert(scopes_data_size() >= size, "oob"); | |
| 2067 memcpy(scopes_data_begin(), buffer, size); | |
| 2068 } | |
| 2069 | |
| 2070 | |
| 2071 #ifdef ASSERT | |
| 2072 static PcDesc* linear_search(nmethod* nm, int pc_offset, bool approximate) { | |
| 2073 PcDesc* lower = nm->scopes_pcs_begin(); | |
| 2074 PcDesc* upper = nm->scopes_pcs_end(); | |
| 2075 lower += 1; // exclude initial sentinel | |
| 2076 PcDesc* res = NULL; | |
| 2077 for (PcDesc* p = lower; p < upper; p++) { | |
| 2078 NOT_PRODUCT(--nmethod_stats.pc_desc_tests); // don't count this call to match_desc | |
| 2079 if (match_desc(p, pc_offset, approximate)) { | |
| 2080 if (res == NULL) | |
| 2081 res = p; | |
| 2082 else | |
| 2083 res = (PcDesc*) badAddress; | |
| 2084 } | |
| 2085 } | |
| 2086 return res; | |
| 2087 } | |
| 2088 #endif | |
| 2089 | |
| 2090 | |
| 2091 // Finds a PcDesc with real-pc equal to "pc" | |
| 2092 PcDesc* nmethod::find_pc_desc_internal(address pc, bool approximate) { | |
| 1748 | 2093 address base_address = code_begin(); |
| 0 | 2094 if ((pc < base_address) || |
| 2095 (pc - base_address) >= (ptrdiff_t) PcDesc::upper_offset_limit) { | |
| 2096 return NULL; // PC is wildly out of range | |
| 2097 } | |
| 2098 int pc_offset = (int) (pc - base_address); | |
| 2099 | |
| 2100 // Check the PcDesc cache if it contains the desired PcDesc | |
| 2101 // (This as an almost 100% hit rate.) | |
| 2102 PcDesc* res = _pc_desc_cache.find_pc_desc(pc_offset, approximate); | |
| 2103 if (res != NULL) { | |
| 2104 assert(res == linear_search(this, pc_offset, approximate), "cache ok"); | |
| 2105 return res; | |
| 2106 } | |
| 2107 | |
| 2108 // Fallback algorithm: quasi-linear search for the PcDesc | |
| 2109 // Find the last pc_offset less than the given offset. | |
| 2110 // The successor must be the required match, if there is a match at all. | |
| 2111 // (Use a fixed radix to avoid expensive affine pointer arithmetic.) | |
| 2112 PcDesc* lower = scopes_pcs_begin(); | |
| 2113 PcDesc* upper = scopes_pcs_end(); | |
| 2114 upper -= 1; // exclude final sentinel | |
| 2115 if (lower >= upper) return NULL; // native method; no PcDescs at all | |
| 2116 | |
| 2117 #define assert_LU_OK \ | |
| 2118 /* invariant on lower..upper during the following search: */ \ | |
| 2119 assert(lower->pc_offset() < pc_offset, "sanity"); \ | |
| 2120 assert(upper->pc_offset() >= pc_offset, "sanity") | |
| 2121 assert_LU_OK; | |
| 2122 | |
| 2123 // Use the last successful return as a split point. | |
| 2124 PcDesc* mid = _pc_desc_cache.last_pc_desc(); | |
| 2125 NOT_PRODUCT(++nmethod_stats.pc_desc_searches); | |
| 2126 if (mid->pc_offset() < pc_offset) { | |
| 2127 lower = mid; | |
| 2128 } else { | |
| 2129 upper = mid; | |
| 2130 } | |
| 2131 | |
| 2132 // Take giant steps at first (4096, then 256, then 16, then 1) | |
| 2133 const int LOG2_RADIX = 4 /*smaller steps in debug mode:*/ debug_only(-1); | |
| 2134 const int RADIX = (1 << LOG2_RADIX); | |
| 2135 for (int step = (1 << (LOG2_RADIX*3)); step > 1; step >>= LOG2_RADIX) { | |
| 2136 while ((mid = lower + step) < upper) { | |
| 2137 assert_LU_OK; | |
| 2138 NOT_PRODUCT(++nmethod_stats.pc_desc_searches); | |
| 2139 if (mid->pc_offset() < pc_offset) { | |
| 2140 lower = mid; | |
| 2141 } else { | |
| 2142 upper = mid; | |
| 2143 break; | |
| 2144 } | |
| 2145 } | |
| 2146 assert_LU_OK; | |
| 2147 } | |
| 2148 | |
| 2149 // Sneak up on the value with a linear search of length ~16. | |
| 2150 while (true) { | |
| 2151 assert_LU_OK; | |
| 2152 mid = lower + 1; | |
| 2153 NOT_PRODUCT(++nmethod_stats.pc_desc_searches); | |
| 2154 if (mid->pc_offset() < pc_offset) { | |
| 2155 lower = mid; | |
| 2156 } else { | |
| 2157 upper = mid; | |
| 2158 break; | |
| 2159 } | |
| 2160 } | |
| 2161 #undef assert_LU_OK | |
| 2162 | |
| 2163 if (match_desc(upper, pc_offset, approximate)) { | |
| 2164 assert(upper == linear_search(this, pc_offset, approximate), "search ok"); | |
| 2165 _pc_desc_cache.add_pc_desc(upper); | |
| 2166 return upper; | |
| 2167 } else { | |
| 2168 assert(NULL == linear_search(this, pc_offset, approximate), "search ok"); | |
| 2169 return NULL; | |
| 2170 } | |
| 2171 } | |
| 2172 | |
| 2173 | |
| 2174 bool nmethod::check_all_dependencies() { | |
| 2175 bool found_check = false; | |
| 2176 // wholesale check of all dependencies | |
| 2177 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
| 2178 if (deps.check_dependency() != NULL) { | |
| 2179 found_check = true; | |
| 2180 NOT_DEBUG(break); | |
| 2181 } | |
| 2182 } | |
| 2183 return found_check; // tell caller if we found anything | |
| 2184 } | |
| 2185 | |
| 2186 bool nmethod::check_dependency_on(DepChange& changes) { | |
| 2187 // What has happened: | |
| 2188 // 1) a new class dependee has been added | |
| 2189 // 2) dependee and all its super classes have been marked | |
| 2190 bool found_check = false; // set true if we are upset | |
| 2191 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
| 2192 // Evaluate only relevant dependencies. | |
| 2193 if (deps.spot_check_dependency_at(changes) != NULL) { | |
| 2194 found_check = true; | |
| 2195 NOT_DEBUG(break); | |
| 2196 } | |
| 2197 } | |
| 2198 return found_check; | |
| 2199 } | |
| 2200 | |
|
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2201 bool nmethod::is_evol_dependent_on(Klass* dependee) { |
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2202 InstanceKlass *dependee_ik = InstanceKlass::cast(dependee); |
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2203 Array<Method*>* dependee_methods = dependee_ik->methods(); |
| 0 | 2204 for (Dependencies::DepStream deps(this); deps.next(); ) { |
| 2205 if (deps.type() == Dependencies::evol_method) { | |
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2206 Method* method = deps.method_argument(0); |
| 0 | 2207 for (int j = 0; j < dependee_methods->length(); j++) { |
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2208 if (dependee_methods->at(j) == method) { |
| 0 | 2209 // RC_TRACE macro has an embedded ResourceMark |
| 2210 RC_TRACE(0x01000000, | |
| 2211 ("Found evol dependency of nmethod %s.%s(%s) compile_id=%d on method %s.%s(%s)", | |
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2212 _method->method_holder()->external_name(), |
| 0 | 2213 _method->name()->as_C_string(), |
| 2214 _method->signature()->as_C_string(), compile_id(), | |
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2215 method->method_holder()->external_name(), |
| 0 | 2216 method->name()->as_C_string(), |
| 2217 method->signature()->as_C_string())); | |
| 2218 if (TraceDependencies || LogCompilation) | |
| 2219 deps.log_dependency(dependee); | |
| 2220 return true; | |
| 2221 } | |
| 2222 } | |
| 2223 } | |
| 2224 } | |
| 2225 return false; | |
| 2226 } | |
| 2227 | |
| 2228 // Called from mark_for_deoptimization, when dependee is invalidated. | |
|
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2229 bool nmethod::is_dependent_on_method(Method* dependee) { |
| 0 | 2230 for (Dependencies::DepStream deps(this); deps.next(); ) { |
| 2231 if (deps.type() != Dependencies::evol_method) | |
| 2232 continue; | |
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2233 Method* method = deps.method_argument(0); |
| 0 | 2234 if (method == dependee) return true; |
| 2235 } | |
| 2236 return false; | |
| 2237 } | |
| 2238 | |
| 2239 | |
| 2240 bool nmethod::is_patchable_at(address instr_addr) { | |
| 1748 | 2241 assert(insts_contains(instr_addr), "wrong nmethod used"); |
| 0 | 2242 if (is_zombie()) { |
| 2243 // a zombie may never be patched | |
| 2244 return false; | |
| 2245 } | |
| 2246 return true; | |
| 2247 } | |
| 2248 | |
| 2249 | |
| 2250 address nmethod::continuation_for_implicit_exception(address pc) { | |
| 2251 // Exception happened outside inline-cache check code => we are inside | |
| 2252 // an active nmethod => use cpc to determine a return address | |
| 1748 | 2253 int exception_offset = pc - code_begin(); |
| 0 | 2254 int cont_offset = ImplicitExceptionTable(this).at( exception_offset ); |
| 2255 #ifdef ASSERT | |
| 2256 if (cont_offset == 0) { | |
| 2257 Thread* thread = ThreadLocalStorage::get_thread_slow(); | |
| 2258 ResetNoHandleMark rnm; // Might be called from LEAF/QUICK ENTRY | |
| 2259 HandleMark hm(thread); | |
| 2260 ResourceMark rm(thread); | |
| 2261 CodeBlob* cb = CodeCache::find_blob(pc); | |
| 2262 assert(cb != NULL && cb == this, ""); | |
| 2263 tty->print_cr("implicit exception happened at " INTPTR_FORMAT, pc); | |
| 2264 print(); | |
| 2265 method()->print_codes(); | |
| 2266 print_code(); | |
| 2267 print_pcs(); | |
| 2268 } | |
| 2269 #endif | |
| 1250 | 2270 if (cont_offset == 0) { |
| 2271 // Let the normal error handling report the exception | |
| 2272 return NULL; | |
| 2273 } | |
| 1748 | 2274 return code_begin() + cont_offset; |
| 0 | 2275 } |
| 2276 | |
| 2277 | |
| 2278 | |
| 2279 void nmethod_init() { | |
| 2280 // make sure you didn't forget to adjust the filler fields | |
| 2281 assert(sizeof(nmethod) % oopSize == 0, "nmethod size must be multiple of a word"); | |
| 2282 } | |
| 2283 | |
| 2284 | |
| 2285 //------------------------------------------------------------------------------------------- | |
| 2286 | |
| 2287 | |
| 2288 // QQQ might we make this work from a frame?? | |
| 2289 nmethodLocker::nmethodLocker(address pc) { | |
| 2290 CodeBlob* cb = CodeCache::find_blob(pc); | |
| 2291 guarantee(cb != NULL && cb->is_nmethod(), "bad pc for a nmethod found"); | |
| 2292 _nm = (nmethod*)cb; | |
| 2293 lock_nmethod(_nm); | |
| 2294 } | |
| 2295 | |
|
2342
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|
2296 // Only JvmtiDeferredEvent::compiled_method_unload_event() |
|
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|
2297 // should pass zombie_ok == true. |
|
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|
2298 void nmethodLocker::lock_nmethod(nmethod* nm, bool zombie_ok) { |
| 0 | 2299 if (nm == NULL) return; |
| 2300 Atomic::inc(&nm->_lock_count); | |
|
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|
2301 guarantee(zombie_ok || !nm->is_zombie(), "cannot lock a zombie method"); |
| 0 | 2302 } |
| 2303 | |
| 2304 void nmethodLocker::unlock_nmethod(nmethod* nm) { | |
| 2305 if (nm == NULL) return; | |
| 2306 Atomic::dec(&nm->_lock_count); | |
| 2307 guarantee(nm->_lock_count >= 0, "unmatched nmethod lock/unlock"); | |
| 2308 } | |
| 2309 | |
| 1204 | 2310 |
| 2311 // ----------------------------------------------------------------------------- | |
| 2312 // nmethod::get_deopt_original_pc | |
| 2313 // | |
| 2314 // Return the original PC for the given PC if: | |
| 2315 // (a) the given PC belongs to a nmethod and | |
| 2316 // (b) it is a deopt PC | |
| 2317 address nmethod::get_deopt_original_pc(const frame* fr) { | |
| 2318 if (fr->cb() == NULL) return NULL; | |
| 2319 | |
| 2320 nmethod* nm = fr->cb()->as_nmethod_or_null(); | |
| 2321 if (nm != NULL && nm->is_deopt_pc(fr->pc())) | |
| 2322 return nm->get_original_pc(fr); | |
| 2323 | |
| 2324 return NULL; | |
| 0 | 2325 } |
| 2326 | |
| 2327 | |
| 2328 // ----------------------------------------------------------------------------- | |
|
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2329 // MethodHandle |
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2330 |
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2331 bool nmethod::is_method_handle_return(address return_pc) { |
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2332 if (!has_method_handle_invokes()) return false; |
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2333 PcDesc* pd = pc_desc_at(return_pc); |
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2334 if (pd == NULL) |
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2335 return false; |
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2336 return pd->is_method_handle_invoke(); |
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2337 } |
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2338 |
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|
2339 |
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|
2340 // ----------------------------------------------------------------------------- |
| 0 | 2341 // Verification |
| 2342 | |
|
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2343 class VerifyOopsClosure: public OopClosure { |
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2344 nmethod* _nm; |
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2345 bool _ok; |
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2346 public: |
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2347 VerifyOopsClosure(nmethod* nm) : _nm(nm), _ok(true) { } |
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2348 bool ok() { return _ok; } |
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2349 virtual void do_oop(oop* p) { |
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2350 if ((*p) == NULL || (*p)->is_oop()) return; |
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2351 if (_ok) { |
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|
2352 _nm->print_nmethod(true); |
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|
2353 _ok = false; |
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|
2354 } |
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|
2355 tty->print_cr("*** non-oop "PTR_FORMAT" found at "PTR_FORMAT" (offset %d)", |
|
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2356 (void *)(*p), (intptr_t)p, (int)((intptr_t)p - (intptr_t)_nm)); |
|
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|
2357 } |
|
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|
2358 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
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|
2359 }; |
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|
2360 |
| 0 | 2361 void nmethod::verify() { |
| 2362 | |
| 2363 // Hmm. OSR methods can be deopted but not marked as zombie or not_entrant | |
| 2364 // seems odd. | |
| 2365 | |
| 2366 if( is_zombie() || is_not_entrant() ) | |
| 2367 return; | |
| 2368 | |
| 2369 // Make sure all the entry points are correctly aligned for patching. | |
| 2370 NativeJump::check_verified_entry_alignment(entry_point(), verified_entry_point()); | |
| 2371 | |
|
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2372 // assert(method()->is_oop(), "must be valid"); |
| 0 | 2373 |
| 2374 ResourceMark rm; | |
| 2375 | |
| 2376 if (!CodeCache::contains(this)) { | |
|
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|
2377 fatal(err_msg("nmethod at " INTPTR_FORMAT " not in zone", this)); |
| 0 | 2378 } |
| 2379 | |
| 2380 if(is_native_method() ) | |
| 2381 return; | |
| 2382 | |
| 2383 nmethod* nm = CodeCache::find_nmethod(verified_entry_point()); | |
| 2384 if (nm != this) { | |
|
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|
2385 fatal(err_msg("findNMethod did not find this nmethod (" INTPTR_FORMAT ")", |
|
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|
2386 this)); |
| 0 | 2387 } |
| 2388 | |
| 2389 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
| 2390 if (! p->verify(this)) { | |
| 2391 tty->print_cr("\t\tin nmethod at " INTPTR_FORMAT " (pcs)", this); | |
| 2392 } | |
| 2393 } | |
| 2394 | |
|
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|
2395 VerifyOopsClosure voc(this); |
|
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|
2396 oops_do(&voc); |
|
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|
2397 assert(voc.ok(), "embedded oops must be OK"); |
|
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|
2398 verify_scavenge_root_oops(); |
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|
2399 |
| 0 | 2400 verify_scopes(); |
| 2401 } | |
| 2402 | |
| 2403 | |
| 2404 void nmethod::verify_interrupt_point(address call_site) { | |
|
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|
2405 // Verify IC only when nmethod installation is finished. |
| 13441 | 2406 bool is_installed = (method()->code() == this) // nmethod is in state 'in_use' and installed |
| 2407 || !this->is_in_use(); // nmethod is installed, but not in 'in_use' state | |
|
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|
2408 if (is_installed) { |
|
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|
2409 Thread *cur = Thread::current(); |
|
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|
2410 if (CompiledIC_lock->owner() == cur || |
|
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|
2411 ((cur->is_VM_thread() || cur->is_ConcurrentGC_thread()) && |
|
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|
2412 SafepointSynchronize::is_at_safepoint())) { |
|
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|
2413 CompiledIC_at(this, call_site); |
|
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|
2414 CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops()); |
|
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|
2415 } else { |
|
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|
2416 MutexLocker ml_verify (CompiledIC_lock); |
|
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|
2417 CompiledIC_at(this, call_site); |
|
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|
2418 } |
| 0 | 2419 } |
|
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|
2420 |
|
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|
2421 PcDesc* pd = pc_desc_at(nativeCall_at(call_site)->return_address()); |
| 0 | 2422 assert(pd != NULL, "PcDesc must exist"); |
| 2423 for (ScopeDesc* sd = new ScopeDesc(this, pd->scope_decode_offset(), | |
|
1253
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diff
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|
2424 pd->obj_decode_offset(), pd->should_reexecute(), |
|
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|
2425 pd->return_oop()); |
| 0 | 2426 !sd->is_top(); sd = sd->sender()) { |
| 2427 sd->verify(); | |
| 2428 } | |
| 2429 } | |
| 2430 | |
| 2431 void nmethod::verify_scopes() { | |
| 2432 if( !method() ) return; // Runtime stubs have no scope | |
| 2433 if (method()->is_native()) return; // Ignore stub methods. | |
| 2434 // iterate through all interrupt point | |
| 2435 // and verify the debug information is valid. | |
| 2436 RelocIterator iter((nmethod*)this); | |
| 2437 while (iter.next()) { | |
| 2438 address stub = NULL; | |
| 2439 switch (iter.type()) { | |
| 2440 case relocInfo::virtual_call_type: | |
| 2441 verify_interrupt_point(iter.addr()); | |
| 2442 break; | |
| 2443 case relocInfo::opt_virtual_call_type: | |
| 2444 stub = iter.opt_virtual_call_reloc()->static_stub(); | |
| 2445 verify_interrupt_point(iter.addr()); | |
| 2446 break; | |
| 2447 case relocInfo::static_call_type: | |
| 2448 stub = iter.static_call_reloc()->static_stub(); | |
| 2449 //verify_interrupt_point(iter.addr()); | |
| 2450 break; | |
| 2451 case relocInfo::runtime_call_type: | |
| 2452 address destination = iter.reloc()->value(); | |
| 2453 // Right now there is no way to find out which entries support | |
| 2454 // an interrupt point. It would be nice if we had this | |
| 2455 // information in a table. | |
| 2456 break; | |
| 2457 } | |
| 2458 assert(stub == NULL || stub_contains(stub), "static call stub outside stub section"); | |
| 2459 } | |
| 2460 } | |
| 2461 | |
| 2462 | |
| 2463 // ----------------------------------------------------------------------------- | |
| 2464 // Non-product code | |
| 2465 #ifndef PRODUCT | |
| 2466 | |
|
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2467 class DebugScavengeRoot: public OopClosure { |
|
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|
2468 nmethod* _nm; |
|
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|
2469 bool _ok; |
|
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|
2470 public: |
|
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|
2471 DebugScavengeRoot(nmethod* nm) : _nm(nm), _ok(true) { } |
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|
2472 bool ok() { return _ok; } |
|
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|
2473 virtual void do_oop(oop* p) { |
|
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|
2474 if ((*p) == NULL || !(*p)->is_scavengable()) return; |
|
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2475 if (_ok) { |
|
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|
2476 _nm->print_nmethod(true); |
|
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|
2477 _ok = false; |
|
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|
2478 } |
|
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|
2479 tty->print_cr("*** scavengable oop "PTR_FORMAT" found at "PTR_FORMAT" (offset %d)", |
|
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|
2480 (void *)(*p), (intptr_t)p, (int)((intptr_t)p - (intptr_t)_nm)); |
|
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|
2481 (*p)->print(); |
|
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|
2482 } |
|
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|
2483 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
|
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|
2484 }; |
| 0 | 2485 |
|
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|
2486 void nmethod::verify_scavenge_root_oops() { |
|
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diff
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|
2487 if (!on_scavenge_root_list()) { |
|
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|
2488 // Actually look inside, to verify the claim that it's clean. |
|
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|
2489 DebugScavengeRoot debug_scavenge_root(this); |
|
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|
2490 oops_do(&debug_scavenge_root); |
|
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|
2491 if (!debug_scavenge_root.ok()) |
|
3377
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diff
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|
2492 fatal("found an unadvertised bad scavengable oop in the code cache"); |
| 0 | 2493 } |
|
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|
2494 assert(scavenge_root_not_marked(), ""); |
| 0 | 2495 } |
| 2496 | |
|
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|
2497 #endif // PRODUCT |
| 0 | 2498 |
| 2499 // Printing operations | |
| 2500 | |
| 2501 void nmethod::print() const { | |
| 2502 ResourceMark rm; | |
| 2503 ttyLocker ttyl; // keep the following output all in one block | |
| 2504 | |
|
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
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|
2505 tty->print("Compiled method "); |
| 0 | 2506 |
| 2507 if (is_compiled_by_c1()) { | |
| 2508 tty->print("(c1) "); | |
| 2509 } else if (is_compiled_by_c2()) { | |
| 2510 tty->print("(c2) "); | |
| 1692 | 2511 } else if (is_compiled_by_shark()) { |
| 2512 tty->print("(shark) "); | |
| 0 | 2513 } else { |
| 2514 tty->print("(nm) "); | |
| 2515 } | |
| 2516 | |
|
2405
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|
2517 print_on(tty, NULL); |
|
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|
2518 |
| 0 | 2519 if (WizardMode) { |
| 2520 tty->print("((nmethod*) "INTPTR_FORMAT ") ", this); | |
| 2521 tty->print(" for method " INTPTR_FORMAT , (address)method()); | |
| 2522 tty->print(" { "); | |
| 2523 if (is_in_use()) tty->print("in_use "); | |
| 2524 if (is_not_entrant()) tty->print("not_entrant "); | |
| 2525 if (is_zombie()) tty->print("zombie "); | |
| 2526 if (is_unloaded()) tty->print("unloaded "); | |
|
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|
2527 if (on_scavenge_root_list()) tty->print("scavenge_root "); |
| 0 | 2528 tty->print_cr("}:"); |
| 2529 } | |
| 2530 if (size () > 0) tty->print_cr(" total in heap [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
| 2531 (address)this, | |
| 2532 (address)this + size(), | |
| 2533 size()); | |
| 2534 if (relocation_size () > 0) tty->print_cr(" relocation [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
| 2535 relocation_begin(), | |
| 2536 relocation_end(), | |
| 2537 relocation_size()); | |
|
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diff
changeset
|
2538 if (consts_size () > 0) tty->print_cr(" constants [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
|
0878d7bae69f
6961697: move nmethod constants section before instruction section
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diff
changeset
|
2539 consts_begin(), |
|
0878d7bae69f
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changeset
|
2540 consts_end(), |
|
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diff
changeset
|
2541 consts_size()); |
| 1748 | 2542 if (insts_size () > 0) tty->print_cr(" main code [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
| 2543 insts_begin(), | |
| 2544 insts_end(), | |
| 2545 insts_size()); | |
| 0 | 2546 if (stub_size () > 0) tty->print_cr(" stub code [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
| 2547 stub_begin(), | |
| 2548 stub_end(), | |
| 2549 stub_size()); | |
|
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1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
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diff
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|
2550 if (oops_size () > 0) tty->print_cr(" oops [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
|
1a5913bf5e19
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diff
changeset
|
2551 oops_begin(), |
|
1a5913bf5e19
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diff
changeset
|
2552 oops_end(), |
|
1a5913bf5e19
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diff
changeset
|
2553 oops_size()); |
|
6725
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|
2554 if (metadata_size () > 0) tty->print_cr(" metadata [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2555 metadata_begin(), |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2556 metadata_end(), |
|
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6964458: Reimplement class meta-data storage to use native memory
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changeset
|
2557 metadata_size()); |
| 0 | 2558 if (scopes_data_size () > 0) tty->print_cr(" scopes data [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
| 2559 scopes_data_begin(), | |
| 2560 scopes_data_end(), | |
| 2561 scopes_data_size()); | |
| 2562 if (scopes_pcs_size () > 0) tty->print_cr(" scopes pcs [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
| 2563 scopes_pcs_begin(), | |
| 2564 scopes_pcs_end(), | |
| 2565 scopes_pcs_size()); | |
| 2566 if (dependencies_size () > 0) tty->print_cr(" dependencies [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
| 2567 dependencies_begin(), | |
| 2568 dependencies_end(), | |
| 2569 dependencies_size()); | |
| 2570 if (handler_table_size() > 0) tty->print_cr(" handler table [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
| 2571 handler_table_begin(), | |
| 2572 handler_table_end(), | |
| 2573 handler_table_size()); | |
| 2574 if (nul_chk_table_size() > 0) tty->print_cr(" nul chk table [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
| 2575 nul_chk_table_begin(), | |
| 2576 nul_chk_table_end(), | |
| 2577 nul_chk_table_size()); | |
| 2578 } | |
| 2579 | |
|
100
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changeset
|
2580 void nmethod::print_code() { |
|
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diff
changeset
|
2581 HandleMark hm; |
|
c7c777385a15
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30
diff
changeset
|
2582 ResourceMark m; |
|
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
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30
diff
changeset
|
2583 Disassembler::decode(this); |
|
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
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30
diff
changeset
|
2584 } |
|
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30
diff
changeset
|
2585 |
|
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changeset
|
2586 |
|
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6667042: PrintAssembly option does not work without special plugin
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diff
changeset
|
2587 #ifndef PRODUCT |
| 0 | 2588 |
| 2589 void nmethod::print_scopes() { | |
| 2590 // Find the first pc desc for all scopes in the code and print it. | |
| 2591 ResourceMark rm; | |
| 2592 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
| 2593 if (p->scope_decode_offset() == DebugInformationRecorder::serialized_null) | |
| 2594 continue; | |
| 2595 | |
| 2596 ScopeDesc* sd = scope_desc_at(p->real_pc(this)); | |
| 2597 sd->print_on(tty, p); | |
| 2598 } | |
| 2599 } | |
| 2600 | |
| 2601 void nmethod::print_dependencies() { | |
| 2602 ResourceMark rm; | |
| 2603 ttyLocker ttyl; // keep the following output all in one block | |
| 2604 tty->print_cr("Dependencies:"); | |
| 2605 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
| 2606 deps.print_dependency(); | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6266
diff
changeset
|
2607 Klass* ctxk = deps.context_type(); |
| 0 | 2608 if (ctxk != NULL) { |
| 6983 | 2609 if (ctxk->oop_is_instance() && ((InstanceKlass*)ctxk)->is_dependent_nmethod(this)) { |
| 2610 tty->print_cr(" [nmethod<=klass]%s", ctxk->external_name()); | |
| 0 | 2611 } |
| 2612 } | |
| 2613 deps.log_dependency(); // put it into the xml log also | |
| 2614 } | |
| 2615 } | |
| 2616 | |
| 2617 | |
| 2618 void nmethod::print_relocations() { | |
| 2619 ResourceMark m; // in case methods get printed via the debugger | |
| 2620 tty->print_cr("relocations:"); | |
| 2621 RelocIterator iter(this); | |
| 2622 iter.print(); | |
| 2623 if (UseRelocIndex) { | |
| 2624 jint* index_end = (jint*)relocation_end() - 1; | |
| 2625 jint index_size = *index_end; | |
| 2626 jint* index_start = (jint*)( (address)index_end - index_size ); | |
| 2627 tty->print_cr(" index @" INTPTR_FORMAT ": index_size=%d", index_start, index_size); | |
| 2628 if (index_size > 0) { | |
| 2629 jint* ip; | |
| 2630 for (ip = index_start; ip+2 <= index_end; ip += 2) | |
| 2631 tty->print_cr(" (%d %d) addr=" INTPTR_FORMAT " @" INTPTR_FORMAT, | |
| 2632 ip[0], | |
| 2633 ip[1], | |
| 2634 header_end()+ip[0], | |
| 2635 relocation_begin()-1+ip[1]); | |
| 2636 for (; ip < index_end; ip++) | |
| 2637 tty->print_cr(" (%d ?)", ip[0]); | |
|
10973
ef57c43512d6
8014431: cleanup warnings indicated by the -Wunused-value compiler option on linux
ccheung
parents:
10390
diff
changeset
|
2638 tty->print_cr(" @" INTPTR_FORMAT ": index_size=%d", ip, *ip); |
|
ef57c43512d6
8014431: cleanup warnings indicated by the -Wunused-value compiler option on linux
ccheung
parents:
10390
diff
changeset
|
2639 ip++; |
| 0 | 2640 tty->print_cr("reloc_end @" INTPTR_FORMAT ":", ip); |
| 2641 } | |
| 2642 } | |
| 2643 } | |
| 2644 | |
| 2645 | |
| 2646 void nmethod::print_pcs() { | |
| 2647 ResourceMark m; // in case methods get printed via debugger | |
| 2648 tty->print_cr("pc-bytecode offsets:"); | |
| 2649 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
| 2650 p->print(this); | |
| 2651 } | |
| 2652 } | |
| 2653 | |
|
100
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30
diff
changeset
|
2654 #endif // PRODUCT |
| 0 | 2655 |
| 2656 const char* nmethod::reloc_string_for(u_char* begin, u_char* end) { | |
| 2657 RelocIterator iter(this, begin, end); | |
| 2658 bool have_one = false; | |
| 2659 while (iter.next()) { | |
| 2660 have_one = true; | |
| 2661 switch (iter.type()) { | |
| 2662 case relocInfo::none: return "no_reloc"; | |
| 2663 case relocInfo::oop_type: { | |
| 2664 stringStream st; | |
| 2665 oop_Relocation* r = iter.oop_reloc(); | |
| 2666 oop obj = r->oop_value(); | |
| 2667 st.print("oop("); | |
| 2668 if (obj == NULL) st.print("NULL"); | |
| 2669 else obj->print_value_on(&st); | |
| 2670 st.print(")"); | |
| 2671 return st.as_string(); | |
| 2672 } | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2673 case relocInfo::metadata_type: { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2674 stringStream st; |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2675 metadata_Relocation* r = iter.metadata_reloc(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2676 Metadata* obj = r->metadata_value(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2677 st.print("metadata("); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2678 if (obj == NULL) st.print("NULL"); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2679 else obj->print_value_on(&st); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2680 st.print(")"); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2681 return st.as_string(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2682 } |
| 0 | 2683 case relocInfo::virtual_call_type: return "virtual_call"; |
| 2684 case relocInfo::opt_virtual_call_type: return "optimized virtual_call"; | |
| 2685 case relocInfo::static_call_type: return "static_call"; | |
| 2686 case relocInfo::static_stub_type: return "static_stub"; | |
| 2687 case relocInfo::runtime_call_type: return "runtime_call"; | |
| 2688 case relocInfo::external_word_type: return "external_word"; | |
| 2689 case relocInfo::internal_word_type: return "internal_word"; | |
| 2690 case relocInfo::section_word_type: return "section_word"; | |
| 2691 case relocInfo::poll_type: return "poll"; | |
| 2692 case relocInfo::poll_return_type: return "poll_return"; | |
| 2693 case relocInfo::type_mask: return "type_bit_mask"; | |
| 2694 } | |
| 2695 } | |
| 2696 return have_one ? "other" : NULL; | |
| 2697 } | |
| 2698 | |
| 2699 // Return a the last scope in (begin..end] | |
| 2700 ScopeDesc* nmethod::scope_desc_in(address begin, address end) { | |
| 2701 PcDesc* p = pc_desc_near(begin+1); | |
| 2702 if (p != NULL && p->real_pc(this) <= end) { | |
| 2703 return new ScopeDesc(this, p->scope_decode_offset(), | |
|
1253
f70b0d9ab095
6910618: C2: Error: assert(d->is_oop(),"JVM_ArrayCopy: dst not an oop")
kvn
parents:
1250
diff
changeset
|
2704 p->obj_decode_offset(), p->should_reexecute(), |
|
f70b0d9ab095
6910618: C2: Error: assert(d->is_oop(),"JVM_ArrayCopy: dst not an oop")
kvn
parents:
1250
diff
changeset
|
2705 p->return_oop()); |
| 0 | 2706 } |
| 2707 return NULL; | |
| 2708 } | |
| 2709 | |
|
6796
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
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6792
diff
changeset
|
2710 void nmethod::print_nmethod_labels(outputStream* stream, address block_begin) const { |
|
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2711 if (block_begin == entry_point()) stream->print_cr("[Entry Point]"); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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1141
diff
changeset
|
2712 if (block_begin == verified_entry_point()) stream->print_cr("[Verified Entry Point]"); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2713 if (block_begin == exception_begin()) stream->print_cr("[Exception Handler]"); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2714 if (block_begin == stub_begin()) stream->print_cr("[Stub Code]"); |
| 1204 | 2715 if (block_begin == deopt_handler_begin()) stream->print_cr("[Deopt Handler Code]"); |
|
1691
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
twisti
parents:
1644
diff
changeset
|
2716 |
|
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
twisti
parents:
1644
diff
changeset
|
2717 if (has_method_handle_invokes()) |
|
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
twisti
parents:
1644
diff
changeset
|
2718 if (block_begin == deopt_mh_handler_begin()) stream->print_cr("[Deopt MH Handler Code]"); |
|
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
twisti
parents:
1644
diff
changeset
|
2719 |
|
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2720 if (block_begin == consts_begin()) stream->print_cr("[Constants]"); |
|
1691
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
twisti
parents:
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diff
changeset
|
2721 |
|
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
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1141
diff
changeset
|
2722 if (block_begin == entry_point()) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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1141
diff
changeset
|
2723 methodHandle m = method(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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1141
diff
changeset
|
2724 if (m.not_null()) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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diff
changeset
|
2725 stream->print(" # "); |
|
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6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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diff
changeset
|
2726 m->print_value_on(stream); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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diff
changeset
|
2727 stream->cr(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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1141
diff
changeset
|
2728 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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diff
changeset
|
2729 if (m.not_null() && !is_osr_method()) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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1141
diff
changeset
|
2730 ResourceMark rm; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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1141
diff
changeset
|
2731 int sizeargs = m->size_of_parameters(); |
|
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6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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1141
diff
changeset
|
2732 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType, sizeargs); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2733 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, sizeargs); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2734 { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2735 int sig_index = 0; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2736 if (!m->is_static()) |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2737 sig_bt[sig_index++] = T_OBJECT; // 'this' |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2738 for (SignatureStream ss(m->signature()); !ss.at_return_type(); ss.next()) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2739 BasicType t = ss.type(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2740 sig_bt[sig_index++] = t; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2741 if (type2size[t] == 2) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2742 sig_bt[sig_index++] = T_VOID; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2743 } else { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2744 assert(type2size[t] == 1, "size is 1 or 2"); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2745 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2746 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2747 assert(sig_index == sizeargs, ""); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2748 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2749 const char* spname = "sp"; // make arch-specific? |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2750 intptr_t out_preserve = SharedRuntime::java_calling_convention(sig_bt, regs, sizeargs, false); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2751 int stack_slot_offset = this->frame_size() * wordSize; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2752 int tab1 = 14, tab2 = 24; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2753 int sig_index = 0; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2754 int arg_index = (m->is_static() ? 0 : -1); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2755 bool did_old_sp = false; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2756 for (SignatureStream ss(m->signature()); !ss.at_return_type(); ) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2757 bool at_this = (arg_index == -1); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2758 bool at_old_sp = false; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2759 BasicType t = (at_this ? T_OBJECT : ss.type()); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2760 assert(t == sig_bt[sig_index], "sigs in sync"); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2761 if (at_this) |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2762 stream->print(" # this: "); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2763 else |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2764 stream->print(" # parm%d: ", arg_index); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2765 stream->move_to(tab1); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2766 VMReg fst = regs[sig_index].first(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2767 VMReg snd = regs[sig_index].second(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2768 if (fst->is_reg()) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2769 stream->print("%s", fst->name()); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2770 if (snd->is_valid()) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2771 stream->print(":%s", snd->name()); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2772 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2773 } else if (fst->is_stack()) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2774 int offset = fst->reg2stack() * VMRegImpl::stack_slot_size + stack_slot_offset; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2775 if (offset == stack_slot_offset) at_old_sp = true; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2776 stream->print("[%s+0x%x]", spname, offset); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2777 } else { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2778 stream->print("reg%d:%d??", (int)(intptr_t)fst, (int)(intptr_t)snd); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2779 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2780 stream->print(" "); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2781 stream->move_to(tab2); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2782 stream->print("= "); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2783 if (at_this) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2784 m->method_holder()->print_value_on(stream); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2785 } else { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2786 bool did_name = false; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2787 if (!at_this && ss.is_object()) { |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2142
diff
changeset
|
2788 Symbol* name = ss.as_symbol_or_null(); |
|
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2789 if (name != NULL) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2790 name->print_value_on(stream); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2791 did_name = true; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2792 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2793 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2794 if (!did_name) |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2795 stream->print("%s", type2name(t)); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2796 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2797 if (at_old_sp) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2798 stream->print(" (%s of caller)", spname); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2799 did_old_sp = true; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2800 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2801 stream->cr(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2802 sig_index += type2size[t]; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2803 arg_index += 1; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2804 if (!at_this) ss.next(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2805 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2806 if (!did_old_sp) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2807 stream->print(" # "); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2808 stream->move_to(tab1); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2809 stream->print("[%s+0x%x]", spname, stack_slot_offset); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2810 stream->print(" (%s of caller)", spname); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2811 stream->cr(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2812 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2813 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2814 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2815 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2816 |
| 0 | 2817 void nmethod::print_code_comment_on(outputStream* st, int column, u_char* begin, u_char* end) { |
| 2818 // First, find an oopmap in (begin, end]. | |
| 2819 // We use the odd half-closed interval so that oop maps and scope descs | |
| 2820 // which are tied to the byte after a call are printed with the call itself. | |
| 1748 | 2821 address base = code_begin(); |
| 0 | 2822 OopMapSet* oms = oop_maps(); |
| 2823 if (oms != NULL) { | |
| 2824 for (int i = 0, imax = oms->size(); i < imax; i++) { | |
| 2825 OopMap* om = oms->at(i); | |
| 2826 address pc = base + om->offset(); | |
| 2827 if (pc > begin) { | |
| 2828 if (pc <= end) { | |
|
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2829 st->move_to(column); |
|
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2830 st->print("; "); |
|
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2831 om->print_on(st); |
| 0 | 2832 } |
| 2833 break; | |
| 2834 } | |
| 2835 } | |
| 2836 } | |
|
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2837 |
|
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2838 // Print any debug info present at this pc. |
| 0 | 2839 ScopeDesc* sd = scope_desc_in(begin, end); |
| 2840 if (sd != NULL) { | |
|
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2841 st->move_to(column); |
| 0 | 2842 if (sd->bci() == SynchronizationEntryBCI) { |
| 2843 st->print(";*synchronization entry"); | |
| 2844 } else { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2845 if (sd->method() == NULL) { |
|
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2846 st->print("method is NULL"); |
| 0 | 2847 } else if (sd->method()->is_native()) { |
|
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2848 st->print("method is native"); |
| 0 | 2849 } else { |
| 2142 | 2850 Bytecodes::Code bc = sd->method()->java_code_at(sd->bci()); |
| 0 | 2851 st->print(";*%s", Bytecodes::name(bc)); |
| 2852 switch (bc) { | |
| 2853 case Bytecodes::_invokevirtual: | |
| 2854 case Bytecodes::_invokespecial: | |
| 2855 case Bytecodes::_invokestatic: | |
| 2856 case Bytecodes::_invokeinterface: | |
| 2857 { | |
| 2142 | 2858 Bytecode_invoke invoke(sd->method(), sd->bci()); |
| 0 | 2859 st->print(" "); |
| 2142 | 2860 if (invoke.name() != NULL) |
| 2861 invoke.name()->print_symbol_on(st); | |
| 0 | 2862 else |
| 2863 st->print("<UNKNOWN>"); | |
| 2864 break; | |
| 2865 } | |
| 2866 case Bytecodes::_getfield: | |
| 2867 case Bytecodes::_putfield: | |
| 2868 case Bytecodes::_getstatic: | |
| 2869 case Bytecodes::_putstatic: | |
| 2870 { | |
| 2142 | 2871 Bytecode_field field(sd->method(), sd->bci()); |
| 0 | 2872 st->print(" "); |
| 2142 | 2873 if (field.name() != NULL) |
| 2874 field.name()->print_symbol_on(st); | |
| 0 | 2875 else |
| 2876 st->print("<UNKNOWN>"); | |
| 2877 } | |
| 2878 } | |
| 2879 } | |
| 2880 } | |
|
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2881 |
| 0 | 2882 // Print all scopes |
| 2883 for (;sd != NULL; sd = sd->sender()) { | |
|
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2884 st->move_to(column); |
| 0 | 2885 st->print("; -"); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2886 if (sd->method() == NULL) { |
|
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2887 st->print("method is NULL"); |
| 0 | 2888 } else { |
| 2889 sd->method()->print_short_name(st); | |
| 2890 } | |
| 2891 int lineno = sd->method()->line_number_from_bci(sd->bci()); | |
| 2892 if (lineno != -1) { | |
| 2893 st->print("@%d (line %d)", sd->bci(), lineno); | |
| 2894 } else { | |
| 2895 st->print("@%d", sd->bci()); | |
| 2896 } | |
| 2897 st->cr(); | |
| 2898 } | |
| 2899 } | |
| 2900 | |
| 2901 // Print relocation information | |
| 2902 const char* str = reloc_string_for(begin, end); | |
| 2903 if (str != NULL) { | |
| 2904 if (sd != NULL) st->cr(); | |
|
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2905 st->move_to(column); |
| 0 | 2906 st->print("; {%s}", str); |
| 2907 } | |
| 1748 | 2908 int cont_offset = ImplicitExceptionTable(this).at(begin - code_begin()); |
| 0 | 2909 if (cont_offset != 0) { |
|
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2910 st->move_to(column); |
| 1748 | 2911 st->print("; implicit exception: dispatches to " INTPTR_FORMAT, code_begin() + cont_offset); |
| 0 | 2912 } |
| 2913 | |
| 2914 } | |
| 2915 | |
|
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2916 #ifndef PRODUCT |
|
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2917 |
| 0 | 2918 void nmethod::print_value_on(outputStream* st) const { |
|
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2376
diff
changeset
|
2919 st->print("nmethod"); |
|
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2376
diff
changeset
|
2920 print_on(st, NULL); |
| 0 | 2921 } |
| 2922 | |
| 2923 void nmethod::print_calls(outputStream* st) { | |
| 2924 RelocIterator iter(this); | |
| 2925 while (iter.next()) { | |
| 2926 switch (iter.type()) { | |
| 2927 case relocInfo::virtual_call_type: | |
| 2928 case relocInfo::opt_virtual_call_type: { | |
| 2929 VerifyMutexLocker mc(CompiledIC_lock); | |
|
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882004b9e7e1
8047362: Add a version of CompiledIC_at that doesn't create a new RelocIterator
stefank
parents:
20269
diff
changeset
|
2930 CompiledIC_at(&iter)->print(); |
| 0 | 2931 break; |
| 2932 } | |
| 2933 case relocInfo::static_call_type: | |
| 2934 st->print_cr("Static call at " INTPTR_FORMAT, iter.reloc()->addr()); | |
| 2935 compiledStaticCall_at(iter.reloc())->print(); | |
| 2936 break; | |
| 2937 } | |
| 2938 } | |
| 2939 } | |
| 2940 | |
| 2941 void nmethod::print_handler_table() { | |
| 2942 ExceptionHandlerTable(this).print(); | |
| 2943 } | |
| 2944 | |
| 2945 void nmethod::print_nul_chk_table() { | |
| 1748 | 2946 ImplicitExceptionTable(this).print(code_begin()); |
| 0 | 2947 } |
| 2948 | |
| 2949 void nmethod::print_statistics() { | |
| 2950 ttyLocker ttyl; | |
| 2951 if (xtty != NULL) xtty->head("statistics type='nmethod'"); | |
| 2952 nmethod_stats.print_native_nmethod_stats(); | |
| 2953 nmethod_stats.print_nmethod_stats(); | |
| 2954 DebugInformationRecorder::print_statistics(); | |
| 2955 nmethod_stats.print_pc_stats(); | |
| 2956 Dependencies::print_statistics(); | |
| 2957 if (xtty != NULL) xtty->tail("statistics"); | |
| 2958 } | |
| 2959 | |
| 2960 #endif // PRODUCT |