Mercurial > hg > truffle
annotate src/share/vm/code/nmethod.cpp @ 14660:3c6ae9109a86
8035946: Use ResourceHashtable for dependency checking
Summary: Use ResourceHashtable for dependency checking and delete GenericHashtable
Reviewed-by: kvn, coleenp
| author | anoll |
|---|---|
| date | Mon, 03 Mar 2014 08:04:14 +0100 |
| parents | b3fe59626fdc |
| children | b51e29501f30 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #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" |
| 1972 | 40 #include "runtime/sharedRuntime.hpp" |
| 41 #include "runtime/sweeper.hpp" | |
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42 #include "utilities/resourceHash.hpp" |
| 1972 | 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 |
| 50 #ifdef DTRACE_ENABLED | |
| 51 | |
| 52 // Only bother with this argument setup if dtrace is available | |
| 53 | |
| 4006 | 54 #define DTRACE_METHOD_UNLOAD_PROBE(method) \ |
| 55 { \ | |
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56 Method* m = (method); \ |
| 4006 | 57 if (m != NULL) { \ |
| 58 Symbol* klass_name = m->klass_name(); \ | |
| 59 Symbol* name = m->name(); \ | |
| 60 Symbol* signature = m->signature(); \ | |
| 61 HOTSPOT_COMPILED_METHOD_UNLOAD( \ | |
| 62 (char *) klass_name->bytes(), klass_name->utf8_length(), \ | |
| 63 (char *) name->bytes(), name->utf8_length(), \ | |
| 64 (char *) signature->bytes(), signature->utf8_length()); \ | |
| 65 } \ | |
| 66 } | |
| 0 | 67 |
| 68 #else // ndef DTRACE_ENABLED | |
| 69 | |
| 70 #define DTRACE_METHOD_UNLOAD_PROBE(method) | |
| 71 | |
| 72 #endif | |
| 73 | |
| 74 bool nmethod::is_compiled_by_c1() const { | |
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75 if (compiler() == NULL) { |
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76 return false; |
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77 } |
| 0 | 78 return compiler()->is_c1(); |
| 79 } | |
| 80 bool nmethod::is_compiled_by_c2() const { | |
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81 if (compiler() == NULL) { |
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82 return false; |
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83 } |
| 0 | 84 return compiler()->is_c2(); |
| 85 } | |
| 1692 | 86 bool nmethod::is_compiled_by_shark() const { |
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87 if (compiler() == NULL) { |
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88 return false; |
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89 } |
| 1692 | 90 return compiler()->is_shark(); |
| 91 } | |
| 0 | 92 |
| 93 | |
| 94 | |
| 95 //--------------------------------------------------------------------------------- | |
| 96 // NMethod statistics | |
| 97 // They are printed under various flags, including: | |
| 98 // PrintC1Statistics, PrintOptoStatistics, LogVMOutput, and LogCompilation. | |
| 99 // (In the latter two cases, they like other stats are printed to the log only.) | |
| 100 | |
| 101 #ifndef PRODUCT | |
| 102 // These variables are put into one block to reduce relocations | |
| 103 // and make it simpler to print from the debugger. | |
| 104 static | |
| 105 struct nmethod_stats_struct { | |
| 106 int nmethod_count; | |
| 107 int total_size; | |
| 108 int relocation_size; | |
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109 int consts_size; |
| 1748 | 110 int insts_size; |
| 0 | 111 int stub_size; |
| 112 int scopes_data_size; | |
| 113 int scopes_pcs_size; | |
| 114 int dependencies_size; | |
| 115 int handler_table_size; | |
| 116 int nul_chk_table_size; | |
| 117 int oops_size; | |
| 118 | |
| 119 void note_nmethod(nmethod* nm) { | |
| 120 nmethod_count += 1; | |
| 121 total_size += nm->size(); | |
| 122 relocation_size += nm->relocation_size(); | |
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123 consts_size += nm->consts_size(); |
| 1748 | 124 insts_size += nm->insts_size(); |
| 0 | 125 stub_size += nm->stub_size(); |
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126 oops_size += nm->oops_size(); |
| 0 | 127 scopes_data_size += nm->scopes_data_size(); |
| 128 scopes_pcs_size += nm->scopes_pcs_size(); | |
| 129 dependencies_size += nm->dependencies_size(); | |
| 130 handler_table_size += nm->handler_table_size(); | |
| 131 nul_chk_table_size += nm->nul_chk_table_size(); | |
| 132 } | |
| 133 void print_nmethod_stats() { | |
| 134 if (nmethod_count == 0) return; | |
| 135 tty->print_cr("Statistics for %d bytecoded nmethods:", nmethod_count); | |
| 136 if (total_size != 0) tty->print_cr(" total in heap = %d", total_size); | |
| 137 if (relocation_size != 0) tty->print_cr(" relocation = %d", relocation_size); | |
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138 if (consts_size != 0) tty->print_cr(" constants = %d", consts_size); |
| 1748 | 139 if (insts_size != 0) tty->print_cr(" main code = %d", insts_size); |
| 0 | 140 if (stub_size != 0) tty->print_cr(" stub code = %d", stub_size); |
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141 if (oops_size != 0) tty->print_cr(" oops = %d", oops_size); |
| 0 | 142 if (scopes_data_size != 0) tty->print_cr(" scopes data = %d", scopes_data_size); |
| 143 if (scopes_pcs_size != 0) tty->print_cr(" scopes pcs = %d", scopes_pcs_size); | |
| 144 if (dependencies_size != 0) tty->print_cr(" dependencies = %d", dependencies_size); | |
| 145 if (handler_table_size != 0) tty->print_cr(" handler table = %d", handler_table_size); | |
| 146 if (nul_chk_table_size != 0) tty->print_cr(" nul chk table = %d", nul_chk_table_size); | |
| 147 } | |
| 148 | |
| 149 int native_nmethod_count; | |
| 150 int native_total_size; | |
| 151 int native_relocation_size; | |
| 1748 | 152 int native_insts_size; |
| 0 | 153 int native_oops_size; |
| 154 void note_native_nmethod(nmethod* nm) { | |
| 155 native_nmethod_count += 1; | |
| 156 native_total_size += nm->size(); | |
| 157 native_relocation_size += nm->relocation_size(); | |
| 1748 | 158 native_insts_size += nm->insts_size(); |
| 0 | 159 native_oops_size += nm->oops_size(); |
| 160 } | |
| 161 void print_native_nmethod_stats() { | |
| 162 if (native_nmethod_count == 0) return; | |
| 163 tty->print_cr("Statistics for %d native nmethods:", native_nmethod_count); | |
| 164 if (native_total_size != 0) tty->print_cr(" N. total size = %d", native_total_size); | |
| 165 if (native_relocation_size != 0) tty->print_cr(" N. relocation = %d", native_relocation_size); | |
| 1748 | 166 if (native_insts_size != 0) tty->print_cr(" N. main code = %d", native_insts_size); |
| 0 | 167 if (native_oops_size != 0) tty->print_cr(" N. oops = %d", native_oops_size); |
| 168 } | |
| 169 | |
| 170 int pc_desc_resets; // number of resets (= number of caches) | |
| 171 int pc_desc_queries; // queries to nmethod::find_pc_desc | |
| 172 int pc_desc_approx; // number of those which have approximate true | |
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173 int pc_desc_repeats; // number of _pc_descs[0] hits |
| 0 | 174 int pc_desc_hits; // number of LRU cache hits |
| 175 int pc_desc_tests; // total number of PcDesc examinations | |
| 176 int pc_desc_searches; // total number of quasi-binary search steps | |
| 177 int pc_desc_adds; // number of LUR cache insertions | |
| 178 | |
| 179 void print_pc_stats() { | |
| 180 tty->print_cr("PcDesc Statistics: %d queries, %.2f comparisons per query", | |
| 181 pc_desc_queries, | |
| 182 (double)(pc_desc_tests + pc_desc_searches) | |
| 183 / pc_desc_queries); | |
| 184 tty->print_cr(" caches=%d queries=%d/%d, hits=%d+%d, tests=%d+%d, adds=%d", | |
| 185 pc_desc_resets, | |
| 186 pc_desc_queries, pc_desc_approx, | |
| 187 pc_desc_repeats, pc_desc_hits, | |
| 188 pc_desc_tests, pc_desc_searches, pc_desc_adds); | |
| 189 } | |
| 190 } nmethod_stats; | |
| 191 #endif //PRODUCT | |
| 192 | |
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193 |
| 0 | 194 //--------------------------------------------------------------------------------- |
| 195 | |
| 196 | |
| 197 ExceptionCache::ExceptionCache(Handle exception, address pc, address handler) { | |
| 198 assert(pc != NULL, "Must be non null"); | |
| 199 assert(exception.not_null(), "Must be non null"); | |
| 200 assert(handler != NULL, "Must be non null"); | |
| 201 | |
| 202 _count = 0; | |
| 203 _exception_type = exception->klass(); | |
| 204 _next = NULL; | |
| 205 | |
| 206 add_address_and_handler(pc,handler); | |
| 207 } | |
| 208 | |
| 209 | |
| 210 address ExceptionCache::match(Handle exception, address pc) { | |
| 211 assert(pc != NULL,"Must be non null"); | |
| 212 assert(exception.not_null(),"Must be non null"); | |
| 213 if (exception->klass() == exception_type()) { | |
| 214 return (test_address(pc)); | |
| 215 } | |
| 216 | |
| 217 return NULL; | |
| 218 } | |
| 219 | |
| 220 | |
| 221 bool ExceptionCache::match_exception_with_space(Handle exception) { | |
| 222 assert(exception.not_null(),"Must be non null"); | |
| 223 if (exception->klass() == exception_type() && count() < cache_size) { | |
| 224 return true; | |
| 225 } | |
| 226 return false; | |
| 227 } | |
| 228 | |
| 229 | |
| 230 address ExceptionCache::test_address(address addr) { | |
| 231 for (int i=0; i<count(); i++) { | |
| 232 if (pc_at(i) == addr) { | |
| 233 return handler_at(i); | |
| 234 } | |
| 235 } | |
| 236 return NULL; | |
| 237 } | |
| 238 | |
| 239 | |
| 240 bool ExceptionCache::add_address_and_handler(address addr, address handler) { | |
| 241 if (test_address(addr) == handler) return true; | |
| 242 if (count() < cache_size) { | |
| 243 set_pc_at(count(),addr); | |
| 244 set_handler_at(count(), handler); | |
| 245 increment_count(); | |
| 246 return true; | |
| 247 } | |
| 248 return false; | |
| 249 } | |
| 250 | |
| 251 | |
| 252 // private method for handling exception cache | |
| 253 // These methods are private, and used to manipulate the exception cache | |
| 254 // directly. | |
| 255 ExceptionCache* nmethod::exception_cache_entry_for_exception(Handle exception) { | |
| 256 ExceptionCache* ec = exception_cache(); | |
| 257 while (ec != NULL) { | |
| 258 if (ec->match_exception_with_space(exception)) { | |
| 259 return ec; | |
| 260 } | |
| 261 ec = ec->next(); | |
| 262 } | |
| 263 return NULL; | |
| 264 } | |
| 265 | |
| 266 | |
| 267 //----------------------------------------------------------------------------- | |
| 268 | |
| 269 | |
| 270 // Helper used by both find_pc_desc methods. | |
| 271 static inline bool match_desc(PcDesc* pc, int pc_offset, bool approximate) { | |
| 272 NOT_PRODUCT(++nmethod_stats.pc_desc_tests); | |
| 273 if (!approximate) | |
| 274 return pc->pc_offset() == pc_offset; | |
| 275 else | |
| 276 return (pc-1)->pc_offset() < pc_offset && pc_offset <= pc->pc_offset(); | |
| 277 } | |
| 278 | |
| 279 void PcDescCache::reset_to(PcDesc* initial_pc_desc) { | |
| 280 if (initial_pc_desc == NULL) { | |
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281 _pc_descs[0] = NULL; // native method; no PcDescs at all |
| 0 | 282 return; |
| 283 } | |
| 284 NOT_PRODUCT(++nmethod_stats.pc_desc_resets); | |
| 285 // reset the cache by filling it with benign (non-null) values | |
| 286 assert(initial_pc_desc->pc_offset() < 0, "must be sentinel"); | |
| 287 for (int i = 0; i < cache_size; i++) | |
| 288 _pc_descs[i] = initial_pc_desc; | |
| 289 } | |
| 290 | |
| 291 PcDesc* PcDescCache::find_pc_desc(int pc_offset, bool approximate) { | |
| 292 NOT_PRODUCT(++nmethod_stats.pc_desc_queries); | |
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293 NOT_PRODUCT(if (approximate) ++nmethod_stats.pc_desc_approx); |
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294 |
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295 // Note: one might think that caching the most recently |
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296 // read value separately would be a win, but one would be |
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297 // wrong. When many threads are updating it, the cache |
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298 // line it's in would bounce between caches, negating |
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299 // any benefit. |
| 0 | 300 |
| 301 // In order to prevent race conditions do not load cache elements | |
| 302 // repeatedly, but use a local copy: | |
| 303 PcDesc* res; | |
| 304 | |
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305 // Step one: Check the most recently added value. |
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306 res = _pc_descs[0]; |
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307 if (res == NULL) return NULL; // native method; no PcDescs at all |
| 0 | 308 if (match_desc(res, pc_offset, approximate)) { |
| 309 NOT_PRODUCT(++nmethod_stats.pc_desc_repeats); | |
| 310 return res; | |
| 311 } | |
| 312 | |
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313 // Step two: Check the rest of the LRU cache. |
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314 for (int i = 1; i < cache_size; ++i) { |
| 0 | 315 res = _pc_descs[i]; |
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316 if (res->pc_offset() < 0) break; // optimization: skip empty cache |
| 0 | 317 if (match_desc(res, pc_offset, approximate)) { |
| 318 NOT_PRODUCT(++nmethod_stats.pc_desc_hits); | |
| 319 return res; | |
| 320 } | |
| 321 } | |
| 322 | |
| 323 // Report failure. | |
| 324 return NULL; | |
| 325 } | |
| 326 | |
| 327 void PcDescCache::add_pc_desc(PcDesc* pc_desc) { | |
| 328 NOT_PRODUCT(++nmethod_stats.pc_desc_adds); | |
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329 // Update the LRU cache by shifting pc_desc forward. |
| 0 | 330 for (int i = 0; i < cache_size; i++) { |
| 331 PcDesc* next = _pc_descs[i]; | |
| 332 _pc_descs[i] = pc_desc; | |
| 333 pc_desc = next; | |
| 334 } | |
| 335 } | |
| 336 | |
| 337 // adjust pcs_size so that it is a multiple of both oopSize and | |
| 338 // sizeof(PcDesc) (assumes that if sizeof(PcDesc) is not a multiple | |
| 339 // of oopSize, then 2*sizeof(PcDesc) is) | |
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340 static int adjust_pcs_size(int pcs_size) { |
| 0 | 341 int nsize = round_to(pcs_size, oopSize); |
| 342 if ((nsize % sizeof(PcDesc)) != 0) { | |
| 343 nsize = pcs_size + sizeof(PcDesc); | |
| 344 } | |
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345 assert((nsize % oopSize) == 0, "correct alignment"); |
| 0 | 346 return nsize; |
| 347 } | |
| 348 | |
| 349 //----------------------------------------------------------------------------- | |
| 350 | |
| 351 | |
| 352 void nmethod::add_exception_cache_entry(ExceptionCache* new_entry) { | |
| 353 assert(ExceptionCache_lock->owned_by_self(),"Must hold the ExceptionCache_lock"); | |
| 354 assert(new_entry != NULL,"Must be non null"); | |
| 355 assert(new_entry->next() == NULL, "Must be null"); | |
| 356 | |
| 357 if (exception_cache() != NULL) { | |
| 358 new_entry->set_next(exception_cache()); | |
| 359 } | |
| 360 set_exception_cache(new_entry); | |
| 361 } | |
| 362 | |
| 363 void nmethod::remove_from_exception_cache(ExceptionCache* ec) { | |
| 364 ExceptionCache* prev = NULL; | |
| 365 ExceptionCache* curr = exception_cache(); | |
| 366 assert(curr != NULL, "nothing to remove"); | |
| 367 // find the previous and next entry of ec | |
| 368 while (curr != ec) { | |
| 369 prev = curr; | |
| 370 curr = curr->next(); | |
| 371 assert(curr != NULL, "ExceptionCache not found"); | |
| 372 } | |
| 373 // now: curr == ec | |
| 374 ExceptionCache* next = curr->next(); | |
| 375 if (prev == NULL) { | |
| 376 set_exception_cache(next); | |
| 377 } else { | |
| 378 prev->set_next(next); | |
| 379 } | |
| 380 delete curr; | |
| 381 } | |
| 382 | |
| 383 | |
| 384 // public method for accessing the exception cache | |
| 385 // These are the public access methods. | |
| 386 address nmethod::handler_for_exception_and_pc(Handle exception, address pc) { | |
| 387 // We never grab a lock to read the exception cache, so we may | |
| 388 // have false negatives. This is okay, as it can only happen during | |
| 389 // the first few exception lookups for a given nmethod. | |
| 390 ExceptionCache* ec = exception_cache(); | |
| 391 while (ec != NULL) { | |
| 392 address ret_val; | |
| 393 if ((ret_val = ec->match(exception,pc)) != NULL) { | |
| 394 return ret_val; | |
| 395 } | |
| 396 ec = ec->next(); | |
| 397 } | |
| 398 return NULL; | |
| 399 } | |
| 400 | |
| 401 | |
| 402 void nmethod::add_handler_for_exception_and_pc(Handle exception, address pc, address handler) { | |
| 403 // There are potential race conditions during exception cache updates, so we | |
| 404 // must own the ExceptionCache_lock before doing ANY modifications. Because | |
| 605 | 405 // we don't lock during reads, it is possible to have several threads attempt |
| 0 | 406 // to update the cache with the same data. We need to check for already inserted |
| 407 // copies of the current data before adding it. | |
| 408 | |
| 409 MutexLocker ml(ExceptionCache_lock); | |
| 410 ExceptionCache* target_entry = exception_cache_entry_for_exception(exception); | |
| 411 | |
| 412 if (target_entry == NULL || !target_entry->add_address_and_handler(pc,handler)) { | |
| 413 target_entry = new ExceptionCache(exception,pc,handler); | |
| 414 add_exception_cache_entry(target_entry); | |
| 415 } | |
| 416 } | |
| 417 | |
| 418 | |
| 419 //-------------end of code for ExceptionCache-------------- | |
| 420 | |
| 421 | |
| 422 int nmethod::total_size() const { | |
| 423 return | |
|
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424 consts_size() + |
| 1748 | 425 insts_size() + |
| 0 | 426 stub_size() + |
| 427 scopes_data_size() + | |
| 428 scopes_pcs_size() + | |
| 429 handler_table_size() + | |
| 430 nul_chk_table_size(); | |
| 431 } | |
| 432 | |
| 433 const char* nmethod::compile_kind() const { | |
| 434 if (is_osr_method()) return "osr"; | |
|
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435 if (method() != NULL && is_native_method()) return "c2n"; |
| 0 | 436 return NULL; |
| 437 } | |
| 438 | |
|
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439 // Fill in default values for various flag fields |
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440 void nmethod::init_defaults() { |
| 14212 | 441 _state = in_use; |
|
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442 _marked_for_reclamation = 0; |
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443 _has_flushed_dependencies = 0; |
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444 _has_unsafe_access = 0; |
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445 _has_method_handle_invokes = 0; |
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446 _lazy_critical_native = 0; |
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447 _has_wide_vectors = 0; |
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448 _marked_for_deoptimization = 0; |
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449 _lock_count = 0; |
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450 _stack_traversal_mark = 0; |
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451 _unload_reported = false; // jvmti state |
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452 |
| 1726 | 453 #ifdef ASSERT |
| 454 _oops_are_stale = false; | |
| 455 #endif | |
| 456 | |
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457 _oops_do_mark_link = NULL; |
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458 _jmethod_id = NULL; |
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459 _osr_link = NULL; |
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460 _scavenge_root_link = NULL; |
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461 _scavenge_root_state = 0; |
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462 _compiler = NULL; |
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463 |
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464 #ifdef HAVE_DTRACE_H |
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465 _trap_offset = 0; |
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466 #endif // def HAVE_DTRACE_H |
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467 } |
| 0 | 468 |
| 469 nmethod* nmethod::new_native_nmethod(methodHandle method, | |
|
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470 int compile_id, |
| 0 | 471 CodeBuffer *code_buffer, |
| 472 int vep_offset, | |
| 473 int frame_complete, | |
| 474 int frame_size, | |
| 475 ByteSize basic_lock_owner_sp_offset, | |
| 476 ByteSize basic_lock_sp_offset, | |
| 477 OopMapSet* oop_maps) { | |
|
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478 code_buffer->finalize_oop_references(method); |
| 0 | 479 // create nmethod |
| 480 nmethod* nm = NULL; | |
| 481 { | |
| 482 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
| 483 int native_nmethod_size = allocation_size(code_buffer, sizeof(nmethod)); | |
|
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484 CodeOffsets offsets; |
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485 offsets.set_value(CodeOffsets::Verified_Entry, vep_offset); |
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486 offsets.set_value(CodeOffsets::Frame_Complete, frame_complete); |
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487 nm = new (native_nmethod_size) nmethod(method(), native_nmethod_size, |
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488 compile_id, &offsets, |
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489 code_buffer, frame_size, |
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490 basic_lock_owner_sp_offset, |
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491 basic_lock_sp_offset, oop_maps); |
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492 NOT_PRODUCT(if (nm != NULL) nmethod_stats.note_native_nmethod(nm)); |
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493 if (PrintAssembly && nm != NULL) { |
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494 Disassembler::decode(nm); |
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495 } |
| 0 | 496 } |
| 497 // verify nmethod | |
| 498 debug_only(if (nm) nm->verify();) // might block | |
| 499 | |
| 500 if (nm != NULL) { | |
| 501 nm->log_new_nmethod(); | |
| 502 } | |
| 503 | |
| 504 return nm; | |
| 505 } | |
| 506 | |
|
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507 #ifdef HAVE_DTRACE_H |
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508 nmethod* nmethod::new_dtrace_nmethod(methodHandle method, |
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509 CodeBuffer *code_buffer, |
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510 int vep_offset, |
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511 int trap_offset, |
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512 int frame_complete, |
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513 int frame_size) { |
|
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514 code_buffer->finalize_oop_references(method); |
|
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515 // create nmethod |
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516 nmethod* nm = NULL; |
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517 { |
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518 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
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519 int nmethod_size = allocation_size(code_buffer, sizeof(nmethod)); |
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520 CodeOffsets offsets; |
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521 offsets.set_value(CodeOffsets::Verified_Entry, vep_offset); |
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522 offsets.set_value(CodeOffsets::Dtrace_trap, trap_offset); |
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523 offsets.set_value(CodeOffsets::Frame_Complete, frame_complete); |
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524 |
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525 nm = new (nmethod_size) nmethod(method(), nmethod_size, |
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526 &offsets, code_buffer, frame_size); |
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527 |
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528 NOT_PRODUCT(if (nm != NULL) nmethod_stats.note_nmethod(nm)); |
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529 if (PrintAssembly && nm != NULL) { |
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530 Disassembler::decode(nm); |
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531 } |
|
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532 } |
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533 // verify nmethod |
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534 debug_only(if (nm) nm->verify();) // might block |
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535 |
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536 if (nm != NULL) { |
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537 nm->log_new_nmethod(); |
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538 } |
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539 |
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540 return nm; |
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541 } |
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542 |
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543 #endif // def HAVE_DTRACE_H |
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544 |
| 0 | 545 nmethod* nmethod::new_nmethod(methodHandle method, |
| 546 int compile_id, | |
| 547 int entry_bci, | |
| 548 CodeOffsets* offsets, | |
| 549 int orig_pc_offset, | |
| 550 DebugInformationRecorder* debug_info, | |
| 551 Dependencies* dependencies, | |
| 552 CodeBuffer* code_buffer, int frame_size, | |
| 553 OopMapSet* oop_maps, | |
| 554 ExceptionHandlerTable* handler_table, | |
| 555 ImplicitExceptionTable* nul_chk_table, | |
| 556 AbstractCompiler* compiler, | |
| 557 int comp_level | |
| 558 ) | |
| 559 { | |
| 560 assert(debug_info->oop_recorder() == code_buffer->oop_recorder(), "shared OR"); | |
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561 code_buffer->finalize_oop_references(method); |
| 0 | 562 // create nmethod |
| 563 nmethod* nm = NULL; | |
| 564 { MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
| 565 int nmethod_size = | |
| 566 allocation_size(code_buffer, sizeof(nmethod)) | |
| 567 + adjust_pcs_size(debug_info->pcs_size()) | |
| 568 + round_to(dependencies->size_in_bytes() , oopSize) | |
| 569 + round_to(handler_table->size_in_bytes(), oopSize) | |
| 570 + round_to(nul_chk_table->size_in_bytes(), oopSize) | |
| 571 + round_to(debug_info->data_size() , oopSize); | |
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572 |
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573 nm = new (nmethod_size) |
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574 nmethod(method(), nmethod_size, compile_id, entry_bci, offsets, |
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575 orig_pc_offset, debug_info, dependencies, code_buffer, frame_size, |
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576 oop_maps, |
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577 handler_table, |
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578 nul_chk_table, |
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579 compiler, |
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580 comp_level); |
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581 |
| 0 | 582 if (nm != NULL) { |
| 583 // To make dependency checking during class loading fast, record | |
| 584 // the nmethod dependencies in the classes it is dependent on. | |
| 585 // This allows the dependency checking code to simply walk the | |
| 586 // class hierarchy above the loaded class, checking only nmethods | |
| 587 // which are dependent on those classes. The slow way is to | |
| 588 // check every nmethod for dependencies which makes it linear in | |
| 589 // the number of methods compiled. For applications with a lot | |
| 590 // classes the slow way is too slow. | |
| 591 for (Dependencies::DepStream deps(nm); deps.next(); ) { | |
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592 Klass* klass = deps.context_type(); |
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593 if (klass == NULL) { |
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594 continue; // ignore things like evol_method |
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595 } |
| 0 | 596 |
| 597 // record this nmethod as dependent on this klass | |
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598 InstanceKlass::cast(klass)->add_dependent_nmethod(nm); |
| 0 | 599 } |
|
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600 NOT_PRODUCT(nmethod_stats.note_nmethod(nm)); |
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601 if (PrintAssembly || CompilerOracle::has_option_string(method, "PrintAssembly")) { |
|
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602 Disassembler::decode(nm); |
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603 } |
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604 } |
| 0 | 605 } |
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606 // Do verification and logging outside CodeCache_lock. |
| 0 | 607 if (nm != NULL) { |
|
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608 // Safepoints in nmethod::verify aren't allowed because nm hasn't been installed yet. |
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609 DEBUG_ONLY(nm->verify();) |
| 0 | 610 nm->log_new_nmethod(); |
| 611 } | |
| 612 return nm; | |
| 613 } | |
| 614 | |
| 615 | |
| 616 // For native wrappers | |
| 617 nmethod::nmethod( | |
|
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618 Method* method, |
| 0 | 619 int nmethod_size, |
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620 int compile_id, |
| 0 | 621 CodeOffsets* offsets, |
| 622 CodeBuffer* code_buffer, | |
| 623 int frame_size, | |
| 624 ByteSize basic_lock_owner_sp_offset, | |
| 625 ByteSize basic_lock_sp_offset, | |
| 626 OopMapSet* oop_maps ) | |
| 627 : CodeBlob("native nmethod", code_buffer, sizeof(nmethod), | |
| 628 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, oop_maps), | |
| 2019 | 629 _native_receiver_sp_offset(basic_lock_owner_sp_offset), |
| 630 _native_basic_lock_sp_offset(basic_lock_sp_offset) | |
| 0 | 631 { |
| 632 { | |
| 633 debug_only(No_Safepoint_Verifier nsv;) | |
| 634 assert_locked_or_safepoint(CodeCache_lock); | |
| 635 | |
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636 init_defaults(); |
| 0 | 637 _method = method; |
| 638 _entry_bci = InvocationEntryBci; | |
| 639 // We have no exception handler or deopt handler make the | |
| 640 // values something that will never match a pc like the nmethod vtable entry | |
| 641 _exception_offset = 0; | |
| 642 _deoptimize_offset = 0; | |
| 1204 | 643 _deoptimize_mh_offset = 0; |
| 0 | 644 _orig_pc_offset = 0; |
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645 |
| 1748 | 646 _consts_offset = data_offset(); |
| 0 | 647 _stub_offset = data_offset(); |
|
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648 _oops_offset = data_offset(); |
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649 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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650 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
| 0 | 651 _scopes_pcs_offset = _scopes_data_offset; |
| 652 _dependencies_offset = _scopes_pcs_offset; | |
| 653 _handler_table_offset = _dependencies_offset; | |
| 654 _nul_chk_table_offset = _handler_table_offset; | |
| 655 _nmethod_end_offset = _nul_chk_table_offset; | |
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656 _compile_id = compile_id; |
| 0 | 657 _comp_level = CompLevel_none; |
| 1748 | 658 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
| 659 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
| 0 | 660 _osr_entry_point = NULL; |
| 661 _exception_cache = NULL; | |
| 662 _pc_desc_cache.reset_to(NULL); | |
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663 _hotness_counter = NMethodSweeper::hotness_counter_reset_val(); |
| 0 | 664 |
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665 code_buffer->copy_values_to(this); |
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666 if (ScavengeRootsInCode && detect_scavenge_root_oops()) { |
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667 CodeCache::add_scavenge_root_nmethod(this); |
| 12080 | 668 Universe::heap()->register_nmethod(this); |
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669 } |
|
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670 debug_only(verify_scavenge_root_oops()); |
| 0 | 671 CodeCache::commit(this); |
| 672 } | |
| 673 | |
| 674 if (PrintNativeNMethods || PrintDebugInfo || PrintRelocations || PrintDependencies) { | |
| 675 ttyLocker ttyl; // keep the following output all in one block | |
| 676 // This output goes directly to the tty, not the compiler log. | |
| 677 // To enable tools to match it up with the compilation activity, | |
| 678 // be sure to tag this tty output with the compile ID. | |
| 679 if (xtty != NULL) { | |
| 680 xtty->begin_head("print_native_nmethod"); | |
| 681 xtty->method(_method); | |
| 682 xtty->stamp(); | |
| 683 xtty->end_head(" address='" INTPTR_FORMAT "'", (intptr_t) this); | |
| 684 } | |
| 685 // print the header part first | |
| 686 print(); | |
| 687 // then print the requested information | |
| 688 if (PrintNativeNMethods) { | |
| 689 print_code(); | |
|
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690 if (oop_maps != NULL) { |
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691 oop_maps->print(); |
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692 } |
| 0 | 693 } |
| 694 if (PrintRelocations) { | |
| 695 print_relocations(); | |
| 696 } | |
| 697 if (xtty != NULL) { | |
| 698 xtty->tail("print_native_nmethod"); | |
| 699 } | |
| 700 } | |
| 701 } | |
| 702 | |
|
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703 // For dtrace wrappers |
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704 #ifdef HAVE_DTRACE_H |
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705 nmethod::nmethod( |
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706 Method* method, |
|
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707 int nmethod_size, |
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708 CodeOffsets* offsets, |
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709 CodeBuffer* code_buffer, |
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710 int frame_size) |
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711 : CodeBlob("dtrace nmethod", code_buffer, sizeof(nmethod), |
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712 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, NULL), |
| 2019 | 713 _native_receiver_sp_offset(in_ByteSize(-1)), |
| 714 _native_basic_lock_sp_offset(in_ByteSize(-1)) | |
|
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715 { |
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716 { |
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717 debug_only(No_Safepoint_Verifier nsv;) |
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718 assert_locked_or_safepoint(CodeCache_lock); |
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719 |
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720 init_defaults(); |
|
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721 _method = method; |
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722 _entry_bci = InvocationEntryBci; |
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723 // We have no exception handler or deopt handler make the |
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724 // values something that will never match a pc like the nmethod vtable entry |
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725 _exception_offset = 0; |
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726 _deoptimize_offset = 0; |
| 1204 | 727 _deoptimize_mh_offset = 0; |
|
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728 _unwind_handler_offset = -1; |
|
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729 _trap_offset = offsets->value(CodeOffsets::Dtrace_trap); |
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730 _orig_pc_offset = 0; |
| 1748 | 731 _consts_offset = data_offset(); |
|
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732 _stub_offset = data_offset(); |
|
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733 _oops_offset = data_offset(); |
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734 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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735 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
|
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736 _scopes_pcs_offset = _scopes_data_offset; |
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737 _dependencies_offset = _scopes_pcs_offset; |
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738 _handler_table_offset = _dependencies_offset; |
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739 _nul_chk_table_offset = _handler_table_offset; |
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740 _nmethod_end_offset = _nul_chk_table_offset; |
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741 _compile_id = 0; // default |
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742 _comp_level = CompLevel_none; |
| 1748 | 743 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
| 744 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
|
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745 _osr_entry_point = NULL; |
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746 _exception_cache = NULL; |
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747 _pc_desc_cache.reset_to(NULL); |
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748 _hotness_counter = NMethodSweeper::hotness_counter_reset_val(); |
|
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749 |
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750 code_buffer->copy_values_to(this); |
|
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751 debug_only(verify_scavenge_root_oops()); |
|
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752 CodeCache::commit(this); |
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753 } |
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754 |
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755 if (PrintNMethods || PrintDebugInfo || PrintRelocations || PrintDependencies) { |
|
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756 ttyLocker ttyl; // keep the following output all in one block |
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757 // This output goes directly to the tty, not the compiler log. |
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758 // To enable tools to match it up with the compilation activity, |
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759 // be sure to tag this tty output with the compile ID. |
|
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760 if (xtty != NULL) { |
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761 xtty->begin_head("print_dtrace_nmethod"); |
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762 xtty->method(_method); |
|
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763 xtty->stamp(); |
|
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764 xtty->end_head(" address='" INTPTR_FORMAT "'", (intptr_t) this); |
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765 } |
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766 // print the header part first |
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767 print(); |
|
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768 // then print the requested information |
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769 if (PrintNMethods) { |
|
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770 print_code(); |
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771 } |
|
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772 if (PrintRelocations) { |
|
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773 print_relocations(); |
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774 } |
|
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775 if (xtty != NULL) { |
|
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776 xtty->tail("print_dtrace_nmethod"); |
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777 } |
|
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778 } |
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779 } |
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780 #endif // def HAVE_DTRACE_H |
| 0 | 781 |
|
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782 void* nmethod::operator new(size_t size, int nmethod_size) throw() { |
|
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783 // Not critical, may return null if there is too little continuous memory |
|
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784 return CodeCache::allocate(nmethod_size); |
| 0 | 785 } |
| 786 | |
| 787 nmethod::nmethod( | |
|
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788 Method* method, |
| 0 | 789 int nmethod_size, |
| 790 int compile_id, | |
| 791 int entry_bci, | |
| 792 CodeOffsets* offsets, | |
| 793 int orig_pc_offset, | |
| 794 DebugInformationRecorder* debug_info, | |
| 795 Dependencies* dependencies, | |
| 796 CodeBuffer *code_buffer, | |
| 797 int frame_size, | |
| 798 OopMapSet* oop_maps, | |
| 799 ExceptionHandlerTable* handler_table, | |
| 800 ImplicitExceptionTable* nul_chk_table, | |
| 801 AbstractCompiler* compiler, | |
| 802 int comp_level | |
| 803 ) | |
| 804 : CodeBlob("nmethod", code_buffer, sizeof(nmethod), | |
| 805 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, oop_maps), | |
| 2019 | 806 _native_receiver_sp_offset(in_ByteSize(-1)), |
| 807 _native_basic_lock_sp_offset(in_ByteSize(-1)) | |
| 0 | 808 { |
| 809 assert(debug_info->oop_recorder() == code_buffer->oop_recorder(), "shared OR"); | |
| 810 { | |
| 811 debug_only(No_Safepoint_Verifier nsv;) | |
| 812 assert_locked_or_safepoint(CodeCache_lock); | |
| 813 | |
|
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814 init_defaults(); |
| 0 | 815 _method = method; |
|
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|
816 _entry_bci = entry_bci; |
| 0 | 817 _compile_id = compile_id; |
| 818 _comp_level = comp_level; | |
| 819 _compiler = compiler; | |
| 820 _orig_pc_offset = orig_pc_offset; | |
|
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821 _hotness_counter = NMethodSweeper::hotness_counter_reset_val(); |
| 1748 | 822 |
| 823 // Section offsets | |
|
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824 _consts_offset = content_offset() + code_buffer->total_offset_of(code_buffer->consts()); |
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825 _stub_offset = content_offset() + code_buffer->total_offset_of(code_buffer->stubs()); |
| 0 | 826 |
| 827 // Exception handler and deopt handler are in the stub section | |
|
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828 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must be set"); |
|
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829 assert(offsets->value(CodeOffsets::Deopt ) != -1, "must be set"); |
| 1748 | 830 _exception_offset = _stub_offset + offsets->value(CodeOffsets::Exceptions); |
| 831 _deoptimize_offset = _stub_offset + offsets->value(CodeOffsets::Deopt); | |
|
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832 if (offsets->value(CodeOffsets::DeoptMH) != -1) { |
|
1762
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833 _deoptimize_mh_offset = _stub_offset + offsets->value(CodeOffsets::DeoptMH); |
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834 } else { |
|
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835 _deoptimize_mh_offset = -1; |
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836 } |
|
1378
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837 if (offsets->value(CodeOffsets::UnwindHandler) != -1) { |
| 1748 | 838 _unwind_handler_offset = code_offset() + offsets->value(CodeOffsets::UnwindHandler); |
|
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839 } else { |
| 1748 | 840 _unwind_handler_offset = -1; |
|
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841 } |
| 1748 | 842 |
|
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843 _oops_offset = data_offset(); |
|
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844 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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845 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
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846 |
|
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847 _scopes_pcs_offset = _scopes_data_offset + round_to(debug_info->data_size (), oopSize); |
| 0 | 848 _dependencies_offset = _scopes_pcs_offset + adjust_pcs_size(debug_info->pcs_size()); |
| 849 _handler_table_offset = _dependencies_offset + round_to(dependencies->size_in_bytes (), oopSize); | |
| 850 _nul_chk_table_offset = _handler_table_offset + round_to(handler_table->size_in_bytes(), oopSize); | |
| 851 _nmethod_end_offset = _nul_chk_table_offset + round_to(nul_chk_table->size_in_bytes(), oopSize); | |
| 852 | |
| 1748 | 853 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
| 854 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
| 855 _osr_entry_point = code_begin() + offsets->value(CodeOffsets::OSR_Entry); | |
| 0 | 856 _exception_cache = NULL; |
| 857 _pc_desc_cache.reset_to(scopes_pcs_begin()); | |
| 858 | |
| 859 // Copy contents of ScopeDescRecorder to nmethod | |
|
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860 code_buffer->copy_values_to(this); |
| 0 | 861 debug_info->copy_to(this); |
| 862 dependencies->copy_to(this); | |
|
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863 if (ScavengeRootsInCode && detect_scavenge_root_oops()) { |
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864 CodeCache::add_scavenge_root_nmethod(this); |
| 12080 | 865 Universe::heap()->register_nmethod(this); |
|
989
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866 } |
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867 debug_only(verify_scavenge_root_oops()); |
| 0 | 868 |
| 869 CodeCache::commit(this); | |
| 870 | |
| 871 // Copy contents of ExceptionHandlerTable to nmethod | |
| 872 handler_table->copy_to(this); | |
| 873 nul_chk_table->copy_to(this); | |
| 874 | |
| 875 // we use the information of entry points to find out if a method is | |
| 876 // static or non static | |
| 877 assert(compiler->is_c2() || | |
| 878 _method->is_static() == (entry_point() == _verified_entry_point), | |
| 879 " entry points must be same for static methods and vice versa"); | |
| 880 } | |
| 881 | |
|
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882 bool printnmethods = PrintNMethods |
|
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883 || CompilerOracle::should_print(_method) |
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884 || CompilerOracle::has_option_string(_method, "PrintNMethods"); |
| 0 | 885 if (printnmethods || PrintDebugInfo || PrintRelocations || PrintDependencies || PrintExceptionHandlers) { |
| 886 print_nmethod(printnmethods); | |
| 887 } | |
| 888 } | |
| 889 | |
| 890 | |
| 891 // Print a short set of xml attributes to identify this nmethod. The | |
| 892 // output should be embedded in some other element. | |
| 893 void nmethod::log_identity(xmlStream* log) const { | |
| 894 log->print(" compile_id='%d'", compile_id()); | |
| 895 const char* nm_kind = compile_kind(); | |
| 896 if (nm_kind != NULL) log->print(" compile_kind='%s'", nm_kind); | |
| 897 if (compiler() != NULL) { | |
| 898 log->print(" compiler='%s'", compiler()->name()); | |
| 899 } | |
| 1783 | 900 if (TieredCompilation) { |
| 901 log->print(" level='%d'", comp_level()); | |
| 902 } | |
| 0 | 903 } |
| 904 | |
| 905 | |
| 906 #define LOG_OFFSET(log, name) \ | |
| 907 if ((intptr_t)name##_end() - (intptr_t)name##_begin()) \ | |
| 908 log->print(" " XSTR(name) "_offset='%d'" , \ | |
| 909 (intptr_t)name##_begin() - (intptr_t)this) | |
| 910 | |
| 911 | |
| 912 void nmethod::log_new_nmethod() const { | |
| 913 if (LogCompilation && xtty != NULL) { | |
| 914 ttyLocker ttyl; | |
| 915 HandleMark hm; | |
| 916 xtty->begin_elem("nmethod"); | |
| 917 log_identity(xtty); | |
| 1748 | 918 xtty->print(" entry='" INTPTR_FORMAT "' size='%d'", code_begin(), size()); |
| 0 | 919 xtty->print(" address='" INTPTR_FORMAT "'", (intptr_t) this); |
| 920 | |
| 921 LOG_OFFSET(xtty, relocation); | |
|
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922 LOG_OFFSET(xtty, consts); |
| 1748 | 923 LOG_OFFSET(xtty, insts); |
| 0 | 924 LOG_OFFSET(xtty, stub); |
| 925 LOG_OFFSET(xtty, scopes_data); | |
| 926 LOG_OFFSET(xtty, scopes_pcs); | |
| 927 LOG_OFFSET(xtty, dependencies); | |
| 928 LOG_OFFSET(xtty, handler_table); | |
| 929 LOG_OFFSET(xtty, nul_chk_table); | |
| 930 LOG_OFFSET(xtty, oops); | |
| 931 | |
| 932 xtty->method(method()); | |
| 933 xtty->stamp(); | |
| 934 xtty->end_elem(); | |
| 935 } | |
| 936 } | |
| 937 | |
| 938 #undef LOG_OFFSET | |
| 939 | |
| 940 | |
| 941 // Print out more verbose output usually for a newly created nmethod. | |
|
2405
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|
942 void nmethod::print_on(outputStream* st, const char* msg) const { |
| 0 | 943 if (st != NULL) { |
| 944 ttyLocker ttyl; | |
|
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945 if (WizardMode) { |
|
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946 CompileTask::print_compilation(st, this, msg, /*short_form:*/ true); |
|
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947 st->print_cr(" (" INTPTR_FORMAT ")", this); |
|
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948 } else { |
|
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949 CompileTask::print_compilation(st, this, msg, /*short_form:*/ false); |
|
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|
950 } |
| 0 | 951 } |
| 952 } | |
| 953 | |
| 954 | |
| 955 void nmethod::print_nmethod(bool printmethod) { | |
| 956 ttyLocker ttyl; // keep the following output all in one block | |
| 957 if (xtty != NULL) { | |
| 958 xtty->begin_head("print_nmethod"); | |
| 959 xtty->stamp(); | |
| 960 xtty->end_head(); | |
| 961 } | |
| 962 // print the header part first | |
| 963 print(); | |
| 964 // then print the requested information | |
| 965 if (printmethod) { | |
| 966 print_code(); | |
| 967 print_pcs(); | |
|
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968 if (oop_maps()) { |
|
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969 oop_maps()->print(); |
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|
970 } |
| 0 | 971 } |
| 972 if (PrintDebugInfo) { | |
| 973 print_scopes(); | |
| 974 } | |
| 975 if (PrintRelocations) { | |
| 976 print_relocations(); | |
| 977 } | |
| 978 if (PrintDependencies) { | |
| 979 print_dependencies(); | |
| 980 } | |
| 981 if (PrintExceptionHandlers) { | |
| 982 print_handler_table(); | |
| 983 print_nul_chk_table(); | |
| 984 } | |
| 985 if (xtty != NULL) { | |
| 986 xtty->tail("print_nmethod"); | |
| 987 } | |
| 988 } | |
| 989 | |
| 990 | |
|
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991 // Promote one word from an assembly-time handle to a live embedded oop. |
|
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992 inline void nmethod::initialize_immediate_oop(oop* dest, jobject handle) { |
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993 if (handle == NULL || |
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994 // As a special case, IC oops are initialized to 1 or -1. |
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995 handle == (jobject) Universe::non_oop_word()) { |
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996 (*dest) = (oop) handle; |
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997 } else { |
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998 (*dest) = JNIHandles::resolve_non_null(handle); |
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999 } |
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1000 } |
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1001 |
|
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1002 |
|
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1003 // Have to have the same name because it's called by a template |
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1004 void nmethod::copy_values(GrowableArray<jobject>* array) { |
|
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1005 int length = array->length(); |
|
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1006 assert((address)(oops_begin() + length) <= (address)oops_end(), "oops big enough"); |
|
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1007 oop* dest = oops_begin(); |
|
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1008 for (int index = 0 ; index < length; index++) { |
|
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1009 initialize_immediate_oop(&dest[index], array->at(index)); |
|
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|
1010 } |
|
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|
1011 |
|
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1012 // Now we can fix up all the oops in the code. We need to do this |
|
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1013 // in the code because the assembler uses jobjects as placeholders. |
|
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1014 // The code and relocations have already been initialized by the |
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1015 // CodeBlob constructor, so it is valid even at this early point to |
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1016 // iterate over relocations and patch the code. |
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1017 fix_oop_relocations(NULL, NULL, /*initialize_immediates=*/ true); |
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1018 } |
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1019 |
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1020 void nmethod::copy_values(GrowableArray<Metadata*>* array) { |
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1021 int length = array->length(); |
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1022 assert((address)(metadata_begin() + length) <= (address)metadata_end(), "big enough"); |
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1023 Metadata** dest = metadata_begin(); |
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1024 for (int index = 0 ; index < length; index++) { |
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1025 dest[index] = array->at(index); |
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1026 } |
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1027 } |
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1028 |
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1029 bool nmethod::is_at_poll_return(address pc) { |
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1030 RelocIterator iter(this, pc, pc+1); |
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1031 while (iter.next()) { |
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1032 if (iter.type() == relocInfo::poll_return_type) |
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1033 return true; |
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1034 } |
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1035 return false; |
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1036 } |
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1037 |
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1038 |
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1039 bool nmethod::is_at_poll_or_poll_return(address pc) { |
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1040 RelocIterator iter(this, pc, pc+1); |
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1041 while (iter.next()) { |
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1042 relocInfo::relocType t = iter.type(); |
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1043 if (t == relocInfo::poll_return_type || t == relocInfo::poll_type) |
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1044 return true; |
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1045 } |
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1046 return false; |
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1047 } |
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1048 |
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1049 |
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1050 void nmethod::fix_oop_relocations(address begin, address end, bool initialize_immediates) { |
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1051 // re-patch all oop-bearing instructions, just in case some oops moved |
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1052 RelocIterator iter(this, begin, end); |
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1053 while (iter.next()) { |
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1054 if (iter.type() == relocInfo::oop_type) { |
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1055 oop_Relocation* reloc = iter.oop_reloc(); |
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1056 if (initialize_immediates && reloc->oop_is_immediate()) { |
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1057 oop* dest = reloc->oop_addr(); |
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1058 initialize_immediate_oop(dest, (jobject) *dest); |
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1059 } |
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1060 // Refresh the oop-related bits of this instruction. |
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1061 reloc->fix_oop_relocation(); |
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1062 } else if (iter.type() == relocInfo::metadata_type) { |
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1063 metadata_Relocation* reloc = iter.metadata_reloc(); |
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1064 reloc->fix_metadata_relocation(); |
|
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1065 } |
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1066 } |
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1067 } |
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1068 |
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1069 |
|
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1070 void nmethod::verify_oop_relocations() { |
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1071 // Ensure sure that the code matches the current oop values |
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1072 RelocIterator iter(this, NULL, NULL); |
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1073 while (iter.next()) { |
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1074 if (iter.type() == relocInfo::oop_type) { |
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1075 oop_Relocation* reloc = iter.oop_reloc(); |
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1076 if (!reloc->oop_is_immediate()) { |
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1077 reloc->verify_oop_relocation(); |
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1078 } |
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1079 } |
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1080 } |
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1081 } |
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1082 |
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1083 |
| 0 | 1084 ScopeDesc* nmethod::scope_desc_at(address pc) { |
| 1085 PcDesc* pd = pc_desc_at(pc); | |
| 1086 guarantee(pd != NULL, "scope must be present"); | |
| 1087 return new ScopeDesc(this, pd->scope_decode_offset(), | |
|
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1088 pd->obj_decode_offset(), pd->should_reexecute(), |
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1089 pd->return_oop()); |
| 0 | 1090 } |
| 1091 | |
| 1092 | |
| 1093 void nmethod::clear_inline_caches() { | |
| 1094 assert(SafepointSynchronize::is_at_safepoint(), "cleaning of IC's only allowed at safepoint"); | |
| 1095 if (is_zombie()) { | |
| 1096 return; | |
| 1097 } | |
| 1098 | |
| 1099 RelocIterator iter(this); | |
| 1100 while (iter.next()) { | |
| 1101 iter.reloc()->clear_inline_cache(); | |
| 1102 } | |
| 1103 } | |
| 1104 | |
| 1105 | |
| 1106 void nmethod::cleanup_inline_caches() { | |
| 1107 | |
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1108 assert_locked_or_safepoint(CompiledIC_lock); |
| 0 | 1109 |
| 1110 // If the method is not entrant or zombie then a JMP is plastered over the | |
| 1111 // first few bytes. If an oop in the old code was there, that oop | |
| 1112 // should not get GC'd. Skip the first few bytes of oops on | |
| 1113 // not-entrant methods. | |
| 1114 address low_boundary = verified_entry_point(); | |
| 1115 if (!is_in_use()) { | |
| 1116 low_boundary += NativeJump::instruction_size; | |
| 1117 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
| 1118 // This means that the low_boundary is going to be a little too high. | |
| 1119 // This shouldn't matter, since oops of non-entrant methods are never used. | |
| 1120 // In fact, why are we bothering to look at oops in a non-entrant method?? | |
| 1121 } | |
| 1122 | |
| 1123 // Find all calls in an nmethod, and clear the ones that points to zombie methods | |
| 1124 ResourceMark rm; | |
| 1125 RelocIterator iter(this, low_boundary); | |
| 1126 while(iter.next()) { | |
| 1127 switch(iter.type()) { | |
| 1128 case relocInfo::virtual_call_type: | |
| 1129 case relocInfo::opt_virtual_call_type: { | |
| 1130 CompiledIC *ic = CompiledIC_at(iter.reloc()); | |
| 1131 // Ok, to lookup references to zombies here | |
| 1132 CodeBlob *cb = CodeCache::find_blob_unsafe(ic->ic_destination()); | |
| 1133 if( cb != NULL && cb->is_nmethod() ) { | |
| 1134 nmethod* nm = (nmethod*)cb; | |
| 1135 // Clean inline caches pointing to both zombie and not_entrant methods | |
| 1202 | 1136 if (!nm->is_in_use() || (nm->method()->code() != nm)) ic->set_to_clean(); |
| 0 | 1137 } |
| 1138 break; | |
| 1139 } | |
| 1140 case relocInfo::static_call_type: { | |
| 1141 CompiledStaticCall *csc = compiledStaticCall_at(iter.reloc()); | |
| 1142 CodeBlob *cb = CodeCache::find_blob_unsafe(csc->destination()); | |
| 1143 if( cb != NULL && cb->is_nmethod() ) { | |
| 1144 nmethod* nm = (nmethod*)cb; | |
| 1145 // Clean inline caches pointing to both zombie and not_entrant methods | |
| 1202 | 1146 if (!nm->is_in_use() || (nm->method()->code() != nm)) csc->set_to_clean(); |
| 0 | 1147 } |
| 1148 break; | |
| 1149 } | |
| 1150 } | |
| 1151 } | |
| 1152 } | |
| 1153 | |
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1154 // This is a private interface with the sweeper. |
| 0 | 1155 void nmethod::mark_as_seen_on_stack() { |
|
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1156 assert(is_alive(), "Must be an alive method"); |
|
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1157 // Set the traversal mark to ensure that the sweeper does 2 |
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1158 // cleaning passes before moving to zombie. |
| 0 | 1159 set_stack_traversal_mark(NMethodSweeper::traversal_count()); |
| 1160 } | |
| 1161 | |
|
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1162 // Tell if a non-entrant method can be converted to a zombie (i.e., |
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1163 // there are no activations on the stack, not in use by the VM, |
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1164 // and not in use by the ServiceThread) |
| 0 | 1165 bool nmethod::can_not_entrant_be_converted() { |
| 1166 assert(is_not_entrant(), "must be a non-entrant method"); | |
| 1167 | |
| 1168 // Since the nmethod sweeper only does partial sweep the sweeper's traversal | |
| 1169 // count can be greater than the stack traversal count before it hits the | |
| 1170 // nmethod for the second time. | |
|
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1171 return stack_traversal_mark()+1 < NMethodSweeper::traversal_count() && |
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1172 !is_locked_by_vm(); |
| 0 | 1173 } |
| 1174 | |
| 1175 void nmethod::inc_decompile_count() { | |
| 1783 | 1176 if (!is_compiled_by_c2()) return; |
| 0 | 1177 // Could be gated by ProfileTraps, but do not bother... |
|
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1178 Method* m = method(); |
| 0 | 1179 if (m == NULL) return; |
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1180 MethodData* mdo = m->method_data(); |
| 0 | 1181 if (mdo == NULL) return; |
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1182 // There is a benign race here. See comments in methodData.hpp. |
| 0 | 1183 mdo->inc_decompile_count(); |
| 1184 } | |
| 1185 | |
| 1186 void nmethod::make_unloaded(BoolObjectClosure* is_alive, oop cause) { | |
| 1187 | |
| 1188 post_compiled_method_unload(); | |
| 1189 | |
| 1190 // Since this nmethod is being unloaded, make sure that dependencies | |
| 1191 // recorded in instanceKlasses get flushed and pass non-NULL closure to | |
| 1192 // indicate that this work is being done during a GC. | |
| 1193 assert(Universe::heap()->is_gc_active(), "should only be called during gc"); | |
| 1194 assert(is_alive != NULL, "Should be non-NULL"); | |
| 1195 // A non-NULL is_alive closure indicates that this is being called during GC. | |
| 1196 flush_dependencies(is_alive); | |
| 1197 | |
| 1198 // Break cycle between nmethod & method | |
| 1199 if (TraceClassUnloading && WizardMode) { | |
| 1200 tty->print_cr("[Class unloading: Making nmethod " INTPTR_FORMAT | |
|
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1201 " unloadable], Method*(" INTPTR_FORMAT |
| 0 | 1202 "), cause(" INTPTR_FORMAT ")", |
| 1203 this, (address)_method, (address)cause); | |
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1204 if (!Universe::heap()->is_gc_active()) |
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1205 cause->klass()->print(); |
| 0 | 1206 } |
| 941 | 1207 // Unlink the osr method, so we do not look this up again |
| 1208 if (is_osr_method()) { | |
| 1209 invalidate_osr_method(); | |
| 1210 } | |
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1211 // If _method is already NULL the Method* is about to be unloaded, |
| 0 | 1212 // so we don't have to break the cycle. Note that it is possible to |
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1213 // have the Method* live here, in case we unload the nmethod because |
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1214 // it is pointing to some oop (other than the Method*) being unloaded. |
| 0 | 1215 if (_method != NULL) { |
|
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1216 // OSR methods point to the Method*, but the Method* does not |
| 0 | 1217 // point back! |
| 1218 if (_method->code() == this) { | |
| 1219 _method->clear_code(); // Break a cycle | |
| 1220 } | |
| 1221 _method = NULL; // Clear the method of this dead nmethod | |
| 1222 } | |
| 1223 // Make the class unloaded - i.e., change state and notify sweeper | |
|
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1224 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint"); |
| 0 | 1225 if (is_in_use()) { |
| 1226 // Transitioning directly from live to unloaded -- so | |
| 1227 // we need to force a cache clean-up; remember this | |
| 1228 // for later on. | |
| 1229 CodeCache::set_needs_cache_clean(true); | |
| 1230 } | |
|
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1231 _state = unloaded; |
| 0 | 1232 |
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1233 // Log the unloading. |
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1234 log_state_change(); |
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1235 |
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1236 // The Method* is gone at this point |
| 0 | 1237 assert(_method == NULL, "Tautology"); |
| 1238 | |
|
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1239 set_osr_link(NULL); |
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1240 //set_scavenge_root_link(NULL); // done by prune_scavenge_root_nmethods |
|
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1241 NMethodSweeper::report_state_change(this); |
| 0 | 1242 } |
| 1243 | |
| 1244 void nmethod::invalidate_osr_method() { | |
| 1245 assert(_entry_bci != InvocationEntryBci, "wrong kind of nmethod"); | |
| 1246 // Remove from list of active nmethods | |
| 1247 if (method() != NULL) | |
|
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1248 method()->method_holder()->remove_osr_nmethod(this); |
| 0 | 1249 // Set entry as invalid |
| 1250 _entry_bci = InvalidOSREntryBci; | |
| 1251 } | |
| 1252 | |
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1253 void nmethod::log_state_change() const { |
| 0 | 1254 if (LogCompilation) { |
| 1255 if (xtty != NULL) { | |
| 1256 ttyLocker ttyl; // keep the following output all in one block | |
|
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1257 if (_state == unloaded) { |
|
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1258 xtty->begin_elem("make_unloaded thread='" UINTX_FORMAT "'", |
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1259 os::current_thread_id()); |
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1260 } else { |
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1261 xtty->begin_elem("make_not_entrant thread='" UINTX_FORMAT "'%s", |
|
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1262 os::current_thread_id(), |
|
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1263 (_state == zombie ? " zombie='1'" : "")); |
|
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1264 } |
| 0 | 1265 log_identity(xtty); |
| 1266 xtty->stamp(); | |
| 1267 xtty->end_elem(); | |
| 1268 } | |
| 1269 } | |
|
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1270 if (PrintCompilation && _state != unloaded) { |
|
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1271 print_on(tty, _state == zombie ? "made zombie" : "made not entrant"); |
| 0 | 1272 } |
| 1273 } | |
| 1274 | |
|
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1275 /** |
|
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1276 * Common functionality for both make_not_entrant and make_zombie |
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1277 */ |
| 1141 | 1278 bool nmethod::make_not_entrant_or_zombie(unsigned int state) { |
| 0 | 1279 assert(state == zombie || state == not_entrant, "must be zombie or not_entrant"); |
|
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1280 assert(!is_zombie(), "should not already be a zombie"); |
| 0 | 1281 |
|
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1282 // Make sure neither the nmethod nor the method is flushed in case of a safepoint in code below. |
| 0 | 1283 nmethodLocker nml(this); |
|
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1284 methodHandle the_method(method()); |
| 1726 | 1285 No_Safepoint_Verifier nsv; |
| 0 | 1286 |
| 12080 | 1287 // during patching, depending on the nmethod state we must notify the GC that |
| 1288 // code has been unloaded, unregistering it. We cannot do this right while | |
| 1289 // holding the Patching_lock because we need to use the CodeCache_lock. This | |
| 1290 // would be prone to deadlocks. | |
| 1291 // This flag is used to remember whether we need to later lock and unregister. | |
| 1292 bool nmethod_needs_unregister = false; | |
| 1293 | |
| 0 | 1294 { |
|
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1295 // invalidate osr nmethod before acquiring the patching lock since |
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1296 // they both acquire leaf locks and we don't want a deadlock. |
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1297 // This logic is equivalent to the logic below for patching the |
|
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1298 // verified entry point of regular methods. |
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1299 if (is_osr_method()) { |
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1300 // this effectively makes the osr nmethod not entrant |
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1301 invalidate_osr_method(); |
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1302 } |
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1303 |
| 0 | 1304 // Enter critical section. Does not block for safepoint. |
| 1305 MutexLockerEx pl(Patching_lock, Mutex::_no_safepoint_check_flag); | |
|
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1306 |
|
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1307 if (_state == state) { |
|
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1308 // another thread already performed this transition so nothing |
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1309 // to do, but return false to indicate this. |
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1310 return false; |
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1311 } |
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1312 |
| 0 | 1313 // The caller can be calling the method statically or through an inline |
| 1314 // cache call. | |
|
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1315 if (!is_osr_method() && !is_not_entrant()) { |
| 0 | 1316 NativeJump::patch_verified_entry(entry_point(), verified_entry_point(), |
| 1317 SharedRuntime::get_handle_wrong_method_stub()); | |
| 1318 } | |
| 1319 | |
|
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1320 if (is_in_use()) { |
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1321 // It's a true state change, so mark the method as decompiled. |
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1322 // Do it only for transition from alive. |
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1323 inc_decompile_count(); |
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1324 } |
|
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1325 |
| 12080 | 1326 // If the state is becoming a zombie, signal to unregister the nmethod with |
| 1327 // the heap. | |
| 1328 // This nmethod may have already been unloaded during a full GC. | |
| 1329 if ((state == zombie) && !is_unloaded()) { | |
| 1330 nmethod_needs_unregister = true; | |
| 1331 } | |
| 1332 | |
|
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1333 // Must happen before state change. Otherwise we have a race condition in |
|
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1334 // nmethod::can_not_entrant_be_converted(). I.e., a method can immediately |
|
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1335 // transition its state from 'not_entrant' to 'zombie' without having to wait |
|
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1336 // for stack scanning. |
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1337 if (state == not_entrant) { |
|
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1338 mark_as_seen_on_stack(); |
|
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1339 OrderAccess::storestore(); |
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1340 } |
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1341 |
| 0 | 1342 // Change state |
|
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1343 _state = state; |
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1344 |
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1345 // Log the transition once |
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1346 log_state_change(); |
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1347 |
|
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1348 // Remove nmethod from method. |
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1349 // We need to check if both the _code and _from_compiled_code_entry_point |
|
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1350 // refer to this nmethod because there is a race in setting these two fields |
|
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1351 // in Method* as seen in bugid 4947125. |
|
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1352 // If the vep() points to the zombie nmethod, the memory for the nmethod |
|
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1353 // could be flushed and the compiler and vtable stubs could still call |
|
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1354 // through it. |
|
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1355 if (method() != NULL && (method()->code() == this || |
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1356 method()->from_compiled_entry() == verified_entry_point())) { |
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1357 HandleMark hm; |
|
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1358 method()->clear_code(); |
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1359 } |
| 0 | 1360 } // leave critical region under Patching_lock |
| 1361 | |
|
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1362 // When the nmethod becomes zombie it is no longer alive so the |
|
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1363 // dependencies must be flushed. nmethods in the not_entrant |
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1364 // state will be flushed later when the transition to zombie |
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1365 // happens or they get unloaded. |
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1366 if (state == zombie) { |
| 1726 | 1367 { |
| 1368 // Flushing dependecies must be done before any possible | |
| 1369 // safepoint can sneak in, otherwise the oops used by the | |
| 1370 // dependency logic could have become stale. | |
| 1371 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
| 12080 | 1372 if (nmethod_needs_unregister) { |
| 1373 Universe::heap()->unregister_nmethod(this); | |
| 1374 } | |
| 1726 | 1375 flush_dependencies(NULL); |
| 1376 } | |
|
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1377 |
|
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1378 // zombie only - if a JVMTI agent has enabled the CompiledMethodUnload |
|
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1379 // event and it hasn't already been reported for this nmethod then |
|
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1380 // report it now. The event may have been reported earilier if the GC |
|
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1381 // marked it for unloading). JvmtiDeferredEventQueue support means |
|
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1382 // we no longer go to a safepoint here. |
|
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1383 post_compiled_method_unload(); |
| 1726 | 1384 |
| 1385 #ifdef ASSERT | |
| 1386 // It's no longer safe to access the oops section since zombie | |
| 1387 // nmethods aren't scanned for GC. | |
| 1388 _oops_are_stale = true; | |
| 1389 #endif | |
|
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1390 // the Method may be reclaimed by class unloading now that the |
|
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1391 // nmethod is in zombie state |
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1392 set_method(NULL); |
|
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1393 } else { |
|
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1394 assert(state == not_entrant, "other cases may need to be handled differently"); |
|
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1395 } |
|
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|
1396 |
| 0 | 1397 if (TraceCreateZombies) { |
| 1398 tty->print_cr("nmethod <" INTPTR_FORMAT "> code made %s", this, (state == not_entrant) ? "not entrant" : "zombie"); | |
| 1399 } | |
| 1400 | |
|
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1401 NMethodSweeper::report_state_change(this); |
|
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1402 return true; |
| 0 | 1403 } |
| 1404 | |
| 1405 void nmethod::flush() { | |
| 1406 // Note that there are no valid oops in the nmethod anymore. | |
| 1407 assert(is_zombie() || (is_osr_method() && is_unloaded()), "must be a zombie method"); | |
| 1408 assert(is_marked_for_reclamation() || (is_osr_method() && is_unloaded()), "must be marked for reclamation"); | |
| 1409 | |
| 1410 assert (!is_locked_by_vm(), "locked methods shouldn't be flushed"); | |
|
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1411 assert_locked_or_safepoint(CodeCache_lock); |
| 0 | 1412 |
| 1413 // completely deallocate this method | |
|
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1414 Events::log(JavaThread::current(), "flushing nmethod " INTPTR_FORMAT, this); |
| 0 | 1415 if (PrintMethodFlushing) { |
| 1202 | 1416 tty->print_cr("*flushing nmethod %3d/" INTPTR_FORMAT ". Live blobs:" UINT32_FORMAT "/Free CodeCache:" SIZE_FORMAT "Kb", |
| 1417 _compile_id, this, CodeCache::nof_blobs(), CodeCache::unallocated_capacity()/1024); | |
| 0 | 1418 } |
| 1419 | |
| 1420 // We need to deallocate any ExceptionCache data. | |
| 1421 // Note that we do not need to grab the nmethod lock for this, it | |
| 1422 // better be thread safe if we're disposing of it! | |
| 1423 ExceptionCache* ec = exception_cache(); | |
| 1424 set_exception_cache(NULL); | |
| 1425 while(ec != NULL) { | |
| 1426 ExceptionCache* next = ec->next(); | |
| 1427 delete ec; | |
| 1428 ec = next; | |
| 1429 } | |
| 1430 | |
|
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1431 if (on_scavenge_root_list()) { |
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1432 CodeCache::drop_scavenge_root_nmethod(this); |
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1433 } |
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1434 |
| 1692 | 1435 #ifdef SHARK |
|
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1436 ((SharkCompiler *) compiler())->free_compiled_method(insts_begin()); |
| 1692 | 1437 #endif // SHARK |
| 1438 | |
| 0 | 1439 ((CodeBlob*)(this))->flush(); |
| 1440 | |
| 1441 CodeCache::free(this); | |
| 1442 } | |
| 1443 | |
| 1444 | |
| 1445 // | |
| 1446 // Notify all classes this nmethod is dependent on that it is no | |
| 1447 // longer dependent. This should only be called in two situations. | |
| 1448 // First, when a nmethod transitions to a zombie all dependents need | |
| 1449 // to be clear. Since zombification happens at a safepoint there's no | |
| 1450 // synchronization issues. The second place is a little more tricky. | |
| 1451 // During phase 1 of mark sweep class unloading may happen and as a | |
| 1452 // result some nmethods may get unloaded. In this case the flushing | |
| 1453 // of dependencies must happen during phase 1 since after GC any | |
| 1454 // dependencies in the unloaded nmethod won't be updated, so | |
| 1455 // traversing the dependency information in unsafe. In that case this | |
| 1456 // function is called with a non-NULL argument and this function only | |
| 1457 // notifies instanceKlasses that are reachable | |
| 1458 | |
| 1459 void nmethod::flush_dependencies(BoolObjectClosure* is_alive) { | |
|
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1460 assert_locked_or_safepoint(CodeCache_lock); |
| 0 | 1461 assert(Universe::heap()->is_gc_active() == (is_alive != NULL), |
| 1462 "is_alive is non-NULL if and only if we are called during GC"); | |
| 1463 if (!has_flushed_dependencies()) { | |
| 1464 set_has_flushed_dependencies(); | |
| 1465 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
|
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1466 Klass* klass = deps.context_type(); |
| 0 | 1467 if (klass == NULL) continue; // ignore things like evol_method |
| 1468 | |
| 1469 // During GC the is_alive closure is non-NULL, and is used to | |
| 1470 // determine liveness of dependees that need to be updated. | |
|
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1471 if (is_alive == NULL || klass->is_loader_alive(is_alive)) { |
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1472 InstanceKlass::cast(klass)->remove_dependent_nmethod(this); |
| 0 | 1473 } |
| 1474 } | |
| 1475 } | |
| 1476 } | |
| 1477 | |
| 1478 | |
| 1479 // If this oop is not live, the nmethod can be unloaded. | |
|
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1480 bool nmethod::can_unload(BoolObjectClosure* is_alive, oop* root, bool unloading_occurred) { |
| 0 | 1481 assert(root != NULL, "just checking"); |
| 1482 oop obj = *root; | |
| 1483 if (obj == NULL || is_alive->do_object_b(obj)) { | |
| 1484 return false; | |
| 1485 } | |
|
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1486 |
|
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1487 // If ScavengeRootsInCode is true, an nmethod might be unloaded |
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1488 // simply because one of its constant oops has gone dead. |
|
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1489 // No actual classes need to be unloaded in order for this to occur. |
|
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1490 assert(unloading_occurred || ScavengeRootsInCode, "Inconsistency in unloading"); |
| 0 | 1491 make_unloaded(is_alive, obj); |
| 1492 return true; | |
| 1493 } | |
| 1494 | |
| 1495 // ------------------------------------------------------------------ | |
| 1496 // post_compiled_method_load_event | |
| 1497 // new method for install_code() path | |
| 1498 // Transfer information from compilation to jvmti | |
| 1499 void nmethod::post_compiled_method_load_event() { | |
| 1500 | |
|
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1501 Method* moop = method(); |
| 4006 | 1502 HOTSPOT_COMPILED_METHOD_LOAD( |
| 1503 (char *) moop->klass_name()->bytes(), | |
| 1504 moop->klass_name()->utf8_length(), | |
| 1505 (char *) moop->name()->bytes(), | |
| 1506 moop->name()->utf8_length(), | |
| 1507 (char *) moop->signature()->bytes(), | |
| 1508 moop->signature()->utf8_length(), | |
| 1509 insts_begin(), insts_size()); | |
| 0 | 1510 |
|
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1511 if (JvmtiExport::should_post_compiled_method_load() || |
|
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1512 JvmtiExport::should_post_compiled_method_unload()) { |
|
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1513 get_and_cache_jmethod_id(); |
|
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|
1514 } |
|
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1515 |
| 0 | 1516 if (JvmtiExport::should_post_compiled_method_load()) { |
|
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1517 // Let the Service thread (which is a real Java thread) post the event |
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1518 MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag); |
|
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1519 JvmtiDeferredEventQueue::enqueue( |
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1520 JvmtiDeferredEvent::compiled_method_load_event(this)); |
| 0 | 1521 } |
| 1522 } | |
| 1523 | |
|
1616
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1524 jmethodID nmethod::get_and_cache_jmethod_id() { |
|
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1525 if (_jmethod_id == NULL) { |
|
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1526 // Cache the jmethod_id since it can no longer be looked up once the |
|
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1527 // method itself has been marked for unloading. |
|
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1528 _jmethod_id = method()->jmethod_id(); |
|
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1529 } |
|
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1530 return _jmethod_id; |
|
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|
1531 } |
|
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1532 |
| 0 | 1533 void nmethod::post_compiled_method_unload() { |
|
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1534 if (unload_reported()) { |
|
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1535 // During unloading we transition to unloaded and then to zombie |
|
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1536 // and the unloading is reported during the first transition. |
|
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1537 return; |
|
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|
1538 } |
|
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|
1539 |
| 0 | 1540 assert(_method != NULL && !is_unloaded(), "just checking"); |
| 1541 DTRACE_METHOD_UNLOAD_PROBE(method()); | |
| 1542 | |
| 1543 // If a JVMTI agent has enabled the CompiledMethodUnload event then | |
|
1616
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1544 // post the event. Sometime later this nmethod will be made a zombie |
|
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1545 // by the sweeper but the Method* will not be valid at that point. |
|
1616
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1546 // If the _jmethod_id is null then no load event was ever requested |
|
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1547 // so don't bother posting the unload. The main reason for this is |
|
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1548 // that the jmethodID is a weak reference to the Method* so if |
|
1616
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1549 // it's being unloaded there's no way to look it up since the weak |
|
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|
1550 // ref will have been cleared. |
|
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1551 if (_jmethod_id != NULL && JvmtiExport::should_post_compiled_method_unload()) { |
| 0 | 1552 assert(!unload_reported(), "already unloaded"); |
|
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|
1553 JvmtiDeferredEvent event = |
|
2342
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|
1554 JvmtiDeferredEvent::compiled_method_unload_event(this, |
|
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|
1555 _jmethod_id, insts_begin()); |
|
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1556 if (SafepointSynchronize::is_at_safepoint()) { |
|
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1557 // Don't want to take the queueing lock. Add it as pending and |
|
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1558 // it will get enqueued later. |
|
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1559 JvmtiDeferredEventQueue::add_pending_event(event); |
|
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1560 } else { |
|
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1561 MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag); |
|
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1562 JvmtiDeferredEventQueue::enqueue(event); |
|
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|
1563 } |
| 0 | 1564 } |
| 1565 | |
| 1566 // The JVMTI CompiledMethodUnload event can be enabled or disabled at | |
| 1567 // any time. As the nmethod is being unloaded now we mark it has | |
| 1568 // having the unload event reported - this will ensure that we don't | |
| 1569 // attempt to report the event in the unlikely scenario where the | |
| 1570 // event is enabled at the time the nmethod is made a zombie. | |
| 1571 set_unload_reported(); | |
| 1572 } | |
| 1573 | |
| 1574 // This is called at the end of the strong tracing/marking phase of a | |
| 1575 // GC to unload an nmethod if it contains otherwise unreachable | |
| 1576 // oops. | |
| 1577 | |
|
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1578 void nmethod::do_unloading(BoolObjectClosure* is_alive, bool unloading_occurred) { |
| 0 | 1579 // Make sure the oop's ready to receive visitors |
| 1580 assert(!is_zombie() && !is_unloaded(), | |
| 1581 "should not call follow on zombie or unloaded nmethod"); | |
| 1582 | |
| 1583 // If the method is not entrant then a JMP is plastered over the | |
| 1584 // first few bytes. If an oop in the old code was there, that oop | |
| 1585 // should not get GC'd. Skip the first few bytes of oops on | |
| 1586 // not-entrant methods. | |
| 1587 address low_boundary = verified_entry_point(); | |
| 1588 if (is_not_entrant()) { | |
| 1589 low_boundary += NativeJump::instruction_size; | |
| 1590 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
| 1591 // (See comment above.) | |
| 1592 } | |
| 1593 | |
| 1594 // The RedefineClasses() API can cause the class unloading invariant | |
| 1595 // to no longer be true. See jvmtiExport.hpp for details. | |
| 1596 // Also, leave a debugging breadcrumb in local flag. | |
| 1597 bool a_class_was_redefined = JvmtiExport::has_redefined_a_class(); | |
| 1598 if (a_class_was_redefined) { | |
| 1599 // This set of the unloading_occurred flag is done before the | |
| 1600 // call to post_compiled_method_unload() so that the unloading | |
| 1601 // of this nmethod is reported. | |
| 1602 unloading_occurred = true; | |
| 1603 } | |
| 1604 | |
| 1605 // Exception cache | |
| 1606 ExceptionCache* ec = exception_cache(); | |
| 1607 while (ec != NULL) { | |
|
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1608 Klass* ex_klass = ec->exception_type(); |
| 0 | 1609 ExceptionCache* next_ec = ec->next(); |
|
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1610 if (ex_klass != NULL && !ex_klass->is_loader_alive(is_alive)) { |
| 0 | 1611 remove_from_exception_cache(ec); |
| 1612 } | |
| 1613 ec = next_ec; | |
| 1614 } | |
| 1615 | |
| 1616 // If class unloading occurred we first iterate over all inline caches and | |
| 1617 // clear ICs where the cached oop is referring to an unloaded klass or method. | |
| 1618 // The remaining live cached oops will be traversed in the relocInfo::oop_type | |
| 1619 // iteration below. | |
| 1620 if (unloading_occurred) { | |
| 1621 RelocIterator iter(this, low_boundary); | |
| 1622 while(iter.next()) { | |
| 1623 if (iter.type() == relocInfo::virtual_call_type) { | |
| 1624 CompiledIC *ic = CompiledIC_at(iter.reloc()); | |
|
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1625 if (ic->is_icholder_call()) { |
| 0 | 1626 // The only exception is compiledICHolder oops which may |
| 1627 // yet be marked below. (We check this further below). | |
|
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1628 CompiledICHolder* cichk_oop = ic->cached_icholder(); |
|
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1629 if (cichk_oop->holder_method()->method_holder()->is_loader_alive(is_alive) && |
|
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|
1630 cichk_oop->holder_klass()->is_loader_alive(is_alive)) { |
| 14212 | 1631 continue; |
| 1632 } | |
|
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1633 } else { |
|
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1634 Metadata* ic_oop = ic->cached_metadata(); |
|
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1635 if (ic_oop != NULL) { |
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1636 if (ic_oop->is_klass()) { |
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1637 if (((Klass*)ic_oop)->is_loader_alive(is_alive)) { |
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1638 continue; |
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1639 } |
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1640 } else if (ic_oop->is_method()) { |
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1641 if (((Method*)ic_oop)->method_holder()->is_loader_alive(is_alive)) { |
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1642 continue; |
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1643 } |
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1644 } else { |
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1645 ShouldNotReachHere(); |
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1646 } |
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1647 } |
| 14212 | 1648 } |
| 1649 ic->set_to_clean(); | |
| 0 | 1650 } |
| 1651 } | |
| 1652 } | |
| 1653 | |
| 1654 // Compiled code | |
|
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1655 { |
| 0 | 1656 RelocIterator iter(this, low_boundary); |
| 1657 while (iter.next()) { | |
| 1658 if (iter.type() == relocInfo::oop_type) { | |
| 1659 oop_Relocation* r = iter.oop_reloc(); | |
| 1660 // In this loop, we must only traverse those oops directly embedded in | |
| 1661 // the code. Other oops (oop_index>0) are seen as part of scopes_oops. | |
| 1662 assert(1 == (r->oop_is_immediate()) + | |
| 1663 (r->oop_addr() >= oops_begin() && r->oop_addr() < oops_end()), | |
| 1664 "oop must be found in exactly one place"); | |
| 1665 if (r->oop_is_immediate() && r->oop_value() != NULL) { | |
|
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1666 if (can_unload(is_alive, r->oop_addr(), unloading_occurred)) { |
| 0 | 1667 return; |
| 1668 } | |
| 1669 } | |
| 1670 } | |
| 1671 } | |
|
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1672 } |
| 0 | 1673 |
| 1674 | |
| 1675 // Scopes | |
| 1676 for (oop* p = oops_begin(); p < oops_end(); p++) { | |
| 1677 if (*p == Universe::non_oop_word()) continue; // skip non-oops | |
|
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1678 if (can_unload(is_alive, p, unloading_occurred)) { |
| 0 | 1679 return; |
| 1680 } | |
| 1681 } | |
| 1682 | |
|
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1683 // Ensure that all metadata is still alive |
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1684 verify_metadata_loaders(low_boundary, is_alive); |
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1685 } |
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1686 |
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1687 #ifdef ASSERT |
|
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1688 |
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1689 class CheckClass : AllStatic { |
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1690 static BoolObjectClosure* _is_alive; |
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1691 |
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1692 // Check class_loader is alive for this bit of metadata. |
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1693 static void check_class(Metadata* md) { |
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1694 Klass* klass = NULL; |
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1695 if (md->is_klass()) { |
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1696 klass = ((Klass*)md); |
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1697 } else if (md->is_method()) { |
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1698 klass = ((Method*)md)->method_holder(); |
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1699 } else if (md->is_methodData()) { |
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1700 klass = ((MethodData*)md)->method()->method_holder(); |
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1701 } else { |
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1702 md->print(); |
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1703 ShouldNotReachHere(); |
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1704 } |
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1705 assert(klass->is_loader_alive(_is_alive), "must be alive"); |
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1706 } |
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1707 public: |
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1708 static void do_check_class(BoolObjectClosure* is_alive, nmethod* nm) { |
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1709 assert(SafepointSynchronize::is_at_safepoint(), "this is only ok at safepoint"); |
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1710 _is_alive = is_alive; |
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1711 nm->metadata_do(check_class); |
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1712 } |
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1713 }; |
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1714 |
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1715 // This is called during a safepoint so can use static data |
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1716 BoolObjectClosure* CheckClass::_is_alive = NULL; |
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1717 #endif // ASSERT |
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1718 |
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1719 |
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1720 // Processing of oop references should have been sufficient to keep |
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1721 // all strong references alive. Any weak references should have been |
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1722 // cleared as well. Visit all the metadata and ensure that it's |
|
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1723 // really alive. |
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1724 void nmethod::verify_metadata_loaders(address low_boundary, BoolObjectClosure* is_alive) { |
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1725 #ifdef ASSERT |
| 0 | 1726 RelocIterator iter(this, low_boundary); |
| 1727 while (iter.next()) { | |
|
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1728 // static_stub_Relocations may have dangling references to |
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1729 // Method*s so trim them out here. Otherwise it looks like |
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1730 // compiled code is maintaining a link to dead metadata. |
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1731 address static_call_addr = NULL; |
|
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1732 if (iter.type() == relocInfo::opt_virtual_call_type) { |
|
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1733 CompiledIC* cic = CompiledIC_at(iter.reloc()); |
|
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1734 if (!cic->is_call_to_interpreted()) { |
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1735 static_call_addr = iter.addr(); |
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1736 } |
|
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1737 } else if (iter.type() == relocInfo::static_call_type) { |
|
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1738 CompiledStaticCall* csc = compiledStaticCall_at(iter.reloc()); |
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1739 if (!csc->is_call_to_interpreted()) { |
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1740 static_call_addr = iter.addr(); |
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1741 } |
|
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1742 } |
|
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1743 if (static_call_addr != NULL) { |
|
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1744 RelocIterator sciter(this, low_boundary); |
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1745 while (sciter.next()) { |
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1746 if (sciter.type() == relocInfo::static_stub_type && |
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1747 sciter.static_stub_reloc()->static_call() == static_call_addr) { |
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1748 sciter.static_stub_reloc()->clear_inline_cache(); |
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1749 } |
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1750 } |
| 0 | 1751 } |
| 1752 } | |
|
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1753 // Check that the metadata embedded in the nmethod is alive |
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1754 CheckClass::do_check_class(is_alive, this); |
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1755 #endif |
| 0 | 1756 } |
| 1757 | |
|
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1758 |
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1759 // Iterate over metadata calling this function. Used by RedefineClasses |
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1760 void nmethod::metadata_do(void f(Metadata*)) { |
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1761 address low_boundary = verified_entry_point(); |
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1762 if (is_not_entrant()) { |
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1763 low_boundary += NativeJump::instruction_size; |
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1764 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. |
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1765 // (See comment above.) |
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1766 } |
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1767 { |
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1768 // Visit all immediate references that are embedded in the instruction stream. |
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1769 RelocIterator iter(this, low_boundary); |
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1770 while (iter.next()) { |
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1771 if (iter.type() == relocInfo::metadata_type ) { |
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1772 metadata_Relocation* r = iter.metadata_reloc(); |
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1773 // In this lmetadata, we must only follow those metadatas directly embedded in |
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1774 // the code. Other metadatas (oop_index>0) are seen as part of |
|
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1775 // the metadata section below. |
|
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1776 assert(1 == (r->metadata_is_immediate()) + |
|
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1777 (r->metadata_addr() >= metadata_begin() && r->metadata_addr() < metadata_end()), |
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1778 "metadata must be found in exactly one place"); |
|
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1779 if (r->metadata_is_immediate() && r->metadata_value() != NULL) { |
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1780 Metadata* md = r->metadata_value(); |
|
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1781 f(md); |
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1782 } |
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1783 } else if (iter.type() == relocInfo::virtual_call_type) { |
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1784 // Check compiledIC holders associated with this nmethod |
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1785 CompiledIC *ic = CompiledIC_at(iter.reloc()); |
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1786 if (ic->is_icholder_call()) { |
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1787 CompiledICHolder* cichk = ic->cached_icholder(); |
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1788 f(cichk->holder_method()); |
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1789 f(cichk->holder_klass()); |
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1790 } else { |
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1791 Metadata* ic_oop = ic->cached_metadata(); |
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1792 if (ic_oop != NULL) { |
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1793 f(ic_oop); |
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1794 } |
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1795 } |
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1796 } |
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1797 } |
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1798 } |
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1799 |
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1800 // Visit the metadata section |
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1801 for (Metadata** p = metadata_begin(); p < metadata_end(); p++) { |
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1802 if (*p == Universe::non_oop_word() || *p == NULL) continue; // skip non-oops |
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1803 Metadata* md = *p; |
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1804 f(md); |
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1805 } |
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1806 |
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1807 // Call function Method*, not embedded in these other places. |
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1808 if (_method != NULL) f(_method); |
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1809 } |
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1810 |
| 12080 | 1811 void nmethod::oops_do(OopClosure* f, bool allow_zombie) { |
| 0 | 1812 // make sure the oops ready to receive visitors |
| 12080 | 1813 assert(allow_zombie || !is_zombie(), "should not call follow on zombie nmethod"); |
| 1814 assert(!is_unloaded(), "should not call follow on unloaded nmethod"); | |
| 0 | 1815 |
| 1816 // If the method is not entrant or zombie then a JMP is plastered over the | |
| 1817 // first few bytes. If an oop in the old code was there, that oop | |
| 1818 // should not get GC'd. Skip the first few bytes of oops on | |
| 1819 // not-entrant methods. | |
| 1820 address low_boundary = verified_entry_point(); | |
| 1821 if (is_not_entrant()) { | |
| 1822 low_boundary += NativeJump::instruction_size; | |
| 1823 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
| 1824 // (See comment above.) | |
| 1825 } | |
| 1826 | |
| 1827 RelocIterator iter(this, low_boundary); | |
| 941 | 1828 |
| 0 | 1829 while (iter.next()) { |
| 1830 if (iter.type() == relocInfo::oop_type ) { | |
| 1831 oop_Relocation* r = iter.oop_reloc(); | |
| 1832 // In this loop, we must only follow those oops directly embedded in | |
| 1833 // the code. Other oops (oop_index>0) are seen as part of scopes_oops. | |
| 941 | 1834 assert(1 == (r->oop_is_immediate()) + |
| 1835 (r->oop_addr() >= oops_begin() && r->oop_addr() < oops_end()), | |
| 1836 "oop must be found in exactly one place"); | |
| 0 | 1837 if (r->oop_is_immediate() && r->oop_value() != NULL) { |
| 1838 f->do_oop(r->oop_addr()); | |
| 1839 } | |
| 1840 } | |
| 1841 } | |
| 1842 | |
| 1843 // Scopes | |
|
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1844 // This includes oop constants not inlined in the code stream. |
| 0 | 1845 for (oop* p = oops_begin(); p < oops_end(); p++) { |
| 1846 if (*p == Universe::non_oop_word()) continue; // skip non-oops | |
| 1847 f->do_oop(p); | |
| 1848 } | |
| 1849 } | |
| 1850 | |
|
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1851 #define NMETHOD_SENTINEL ((nmethod*)badAddress) |
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1852 |
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1853 nmethod* volatile nmethod::_oops_do_mark_nmethods; |
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1854 |
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1855 // An nmethod is "marked" if its _mark_link is set non-null. |
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1856 // Even if it is the end of the linked list, it will have a non-null link value, |
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1857 // as long as it is on the list. |
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1858 // This code must be MP safe, because it is used from parallel GC passes. |
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1859 bool nmethod::test_set_oops_do_mark() { |
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1860 assert(nmethod::oops_do_marking_is_active(), "oops_do_marking_prologue must be called"); |
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1861 nmethod* observed_mark_link = _oops_do_mark_link; |
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1862 if (observed_mark_link == NULL) { |
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1863 // Claim this nmethod for this thread to mark. |
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1864 observed_mark_link = (nmethod*) |
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1865 Atomic::cmpxchg_ptr(NMETHOD_SENTINEL, &_oops_do_mark_link, NULL); |
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1866 if (observed_mark_link == NULL) { |
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1867 |
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1868 // Atomically append this nmethod (now claimed) to the head of the list: |
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1869 nmethod* observed_mark_nmethods = _oops_do_mark_nmethods; |
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1870 for (;;) { |
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1871 nmethod* required_mark_nmethods = observed_mark_nmethods; |
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1872 _oops_do_mark_link = required_mark_nmethods; |
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1873 observed_mark_nmethods = (nmethod*) |
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1874 Atomic::cmpxchg_ptr(this, &_oops_do_mark_nmethods, required_mark_nmethods); |
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1875 if (observed_mark_nmethods == required_mark_nmethods) |
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1876 break; |
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1877 } |
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1878 // Mark was clear when we first saw this guy. |
|
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1879 NOT_PRODUCT(if (TraceScavenge) print_on(tty, "oops_do, mark")); |
|
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1880 return false; |
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1881 } |
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1882 } |
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1883 // On fall through, another racing thread marked this nmethod before we did. |
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1884 return true; |
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1885 } |
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1886 |
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1887 void nmethod::oops_do_marking_prologue() { |
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1888 NOT_PRODUCT(if (TraceScavenge) tty->print_cr("[oops_do_marking_prologue")); |
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1889 assert(_oops_do_mark_nmethods == NULL, "must not call oops_do_marking_prologue twice in a row"); |
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1890 // We use cmpxchg_ptr instead of regular assignment here because the user |
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1891 // may fork a bunch of threads, and we need them all to see the same state. |
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1892 void* observed = Atomic::cmpxchg_ptr(NMETHOD_SENTINEL, &_oops_do_mark_nmethods, NULL); |
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1893 guarantee(observed == NULL, "no races in this sequential code"); |
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1894 } |
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1895 |
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1896 void nmethod::oops_do_marking_epilogue() { |
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1897 assert(_oops_do_mark_nmethods != NULL, "must not call oops_do_marking_epilogue twice in a row"); |
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1898 nmethod* cur = _oops_do_mark_nmethods; |
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1899 while (cur != NMETHOD_SENTINEL) { |
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1900 assert(cur != NULL, "not NULL-terminated"); |
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1901 nmethod* next = cur->_oops_do_mark_link; |
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1902 cur->_oops_do_mark_link = NULL; |
|
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1903 cur->fix_oop_relocations(); |
|
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1904 NOT_PRODUCT(if (TraceScavenge) cur->print_on(tty, "oops_do, unmark")); |
|
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1905 cur = next; |
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1906 } |
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1907 void* required = _oops_do_mark_nmethods; |
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1908 void* observed = Atomic::cmpxchg_ptr(NULL, &_oops_do_mark_nmethods, required); |
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1909 guarantee(observed == required, "no races in this sequential code"); |
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1910 NOT_PRODUCT(if (TraceScavenge) tty->print_cr("oops_do_marking_epilogue]")); |
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1911 } |
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1912 |
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1913 class DetectScavengeRoot: public OopClosure { |
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1914 bool _detected_scavenge_root; |
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1915 public: |
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1916 DetectScavengeRoot() : _detected_scavenge_root(false) |
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1917 { NOT_PRODUCT(_print_nm = NULL); } |
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1918 bool detected_scavenge_root() { return _detected_scavenge_root; } |
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1919 virtual void do_oop(oop* p) { |
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1920 if ((*p) != NULL && (*p)->is_scavengable()) { |
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1921 NOT_PRODUCT(maybe_print(p)); |
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1922 _detected_scavenge_root = true; |
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1923 } |
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1924 } |
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1925 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
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1926 |
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1927 #ifndef PRODUCT |
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1928 nmethod* _print_nm; |
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1929 void maybe_print(oop* p) { |
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1930 if (_print_nm == NULL) return; |
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1931 if (!_detected_scavenge_root) _print_nm->print_on(tty, "new scavenge root"); |
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1932 tty->print_cr(""PTR_FORMAT"[offset=%d] detected scavengable oop "PTR_FORMAT" (found at "PTR_FORMAT")", |
|
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1933 _print_nm, (int)((intptr_t)p - (intptr_t)_print_nm), |
|
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1934 (void *)(*p), (intptr_t)p); |
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1935 (*p)->print(); |
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1936 } |
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1937 #endif //PRODUCT |
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1938 }; |
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1939 |
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1940 bool nmethod::detect_scavenge_root_oops() { |
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1941 DetectScavengeRoot detect_scavenge_root; |
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1942 NOT_PRODUCT(if (TraceScavenge) detect_scavenge_root._print_nm = this); |
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1943 oops_do(&detect_scavenge_root); |
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1944 return detect_scavenge_root.detected_scavenge_root(); |
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1945 } |
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1946 |
| 0 | 1947 // Method that knows how to preserve outgoing arguments at call. This method must be |
| 1948 // called with a frame corresponding to a Java invoke | |
| 1949 void nmethod::preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { | |
| 1692 | 1950 #ifndef SHARK |
| 0 | 1951 if (!method()->is_native()) { |
| 1952 SimpleScopeDesc ssd(this, fr.pc()); | |
| 2142 | 1953 Bytecode_invoke call(ssd.method(), ssd.bci()); |
| 10390 | 1954 bool has_receiver = call.has_receiver(); |
| 1955 bool has_appendix = call.has_appendix(); | |
|
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1956 Symbol* signature = call.signature(); |
| 10390 | 1957 fr.oops_compiled_arguments_do(signature, has_receiver, has_appendix, reg_map, f); |
| 0 | 1958 } |
| 1692 | 1959 #endif // !SHARK |
| 0 | 1960 } |
| 1961 | |
| 1962 | |
| 1963 oop nmethod::embeddedOop_at(u_char* p) { | |
|
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1964 RelocIterator iter(this, p, p + 1); |
| 0 | 1965 while (iter.next()) |
| 1966 if (iter.type() == relocInfo::oop_type) { | |
| 1967 return iter.oop_reloc()->oop_value(); | |
| 1968 } | |
| 1969 return NULL; | |
| 1970 } | |
| 1971 | |
| 1972 | |
| 1973 inline bool includes(void* p, void* from, void* to) { | |
| 1974 return from <= p && p < to; | |
| 1975 } | |
| 1976 | |
| 1977 | |
| 1978 void nmethod::copy_scopes_pcs(PcDesc* pcs, int count) { | |
| 1979 assert(count >= 2, "must be sentinel values, at least"); | |
| 1980 | |
| 1981 #ifdef ASSERT | |
| 1982 // must be sorted and unique; we do a binary search in find_pc_desc() | |
| 1983 int prev_offset = pcs[0].pc_offset(); | |
| 1984 assert(prev_offset == PcDesc::lower_offset_limit, | |
| 1985 "must start with a sentinel"); | |
| 1986 for (int i = 1; i < count; i++) { | |
| 1987 int this_offset = pcs[i].pc_offset(); | |
| 1988 assert(this_offset > prev_offset, "offsets must be sorted"); | |
| 1989 prev_offset = this_offset; | |
| 1990 } | |
| 1991 assert(prev_offset == PcDesc::upper_offset_limit, | |
| 1992 "must end with a sentinel"); | |
| 1993 #endif //ASSERT | |
| 1994 | |
|
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1995 // Search for MethodHandle invokes and tag the nmethod. |
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1996 for (int i = 0; i < count; i++) { |
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1997 if (pcs[i].is_method_handle_invoke()) { |
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1998 set_has_method_handle_invokes(true); |
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1999 break; |
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2000 } |
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2001 } |
|
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2002 assert(has_method_handle_invokes() == (_deoptimize_mh_offset != -1), "must have deopt mh handler"); |
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2003 |
| 0 | 2004 int size = count * sizeof(PcDesc); |
| 2005 assert(scopes_pcs_size() >= size, "oob"); | |
| 2006 memcpy(scopes_pcs_begin(), pcs, size); | |
| 2007 | |
| 2008 // Adjust the final sentinel downward. | |
| 2009 PcDesc* last_pc = &scopes_pcs_begin()[count-1]; | |
| 2010 assert(last_pc->pc_offset() == PcDesc::upper_offset_limit, "sanity"); | |
| 1748 | 2011 last_pc->set_pc_offset(content_size() + 1); |
| 0 | 2012 for (; last_pc + 1 < scopes_pcs_end(); last_pc += 1) { |
| 2013 // Fill any rounding gaps with copies of the last record. | |
| 2014 last_pc[1] = last_pc[0]; | |
| 2015 } | |
| 2016 // The following assert could fail if sizeof(PcDesc) is not | |
| 2017 // an integral multiple of oopSize (the rounding term). | |
| 2018 // If it fails, change the logic to always allocate a multiple | |
| 2019 // of sizeof(PcDesc), and fill unused words with copies of *last_pc. | |
| 2020 assert(last_pc + 1 == scopes_pcs_end(), "must match exactly"); | |
| 2021 } | |
| 2022 | |
| 2023 void nmethod::copy_scopes_data(u_char* buffer, int size) { | |
| 2024 assert(scopes_data_size() >= size, "oob"); | |
| 2025 memcpy(scopes_data_begin(), buffer, size); | |
| 2026 } | |
| 2027 | |
| 2028 | |
| 2029 #ifdef ASSERT | |
| 2030 static PcDesc* linear_search(nmethod* nm, int pc_offset, bool approximate) { | |
| 2031 PcDesc* lower = nm->scopes_pcs_begin(); | |
| 2032 PcDesc* upper = nm->scopes_pcs_end(); | |
| 2033 lower += 1; // exclude initial sentinel | |
| 2034 PcDesc* res = NULL; | |
| 2035 for (PcDesc* p = lower; p < upper; p++) { | |
| 2036 NOT_PRODUCT(--nmethod_stats.pc_desc_tests); // don't count this call to match_desc | |
| 2037 if (match_desc(p, pc_offset, approximate)) { | |
| 2038 if (res == NULL) | |
| 2039 res = p; | |
| 2040 else | |
| 2041 res = (PcDesc*) badAddress; | |
| 2042 } | |
| 2043 } | |
| 2044 return res; | |
| 2045 } | |
| 2046 #endif | |
| 2047 | |
| 2048 | |
| 2049 // Finds a PcDesc with real-pc equal to "pc" | |
| 2050 PcDesc* nmethod::find_pc_desc_internal(address pc, bool approximate) { | |
| 1748 | 2051 address base_address = code_begin(); |
| 0 | 2052 if ((pc < base_address) || |
| 2053 (pc - base_address) >= (ptrdiff_t) PcDesc::upper_offset_limit) { | |
| 2054 return NULL; // PC is wildly out of range | |
| 2055 } | |
| 2056 int pc_offset = (int) (pc - base_address); | |
| 2057 | |
| 2058 // Check the PcDesc cache if it contains the desired PcDesc | |
| 2059 // (This as an almost 100% hit rate.) | |
| 2060 PcDesc* res = _pc_desc_cache.find_pc_desc(pc_offset, approximate); | |
| 2061 if (res != NULL) { | |
| 2062 assert(res == linear_search(this, pc_offset, approximate), "cache ok"); | |
| 2063 return res; | |
| 2064 } | |
| 2065 | |
| 2066 // Fallback algorithm: quasi-linear search for the PcDesc | |
| 2067 // Find the last pc_offset less than the given offset. | |
| 2068 // The successor must be the required match, if there is a match at all. | |
| 2069 // (Use a fixed radix to avoid expensive affine pointer arithmetic.) | |
| 2070 PcDesc* lower = scopes_pcs_begin(); | |
| 2071 PcDesc* upper = scopes_pcs_end(); | |
| 2072 upper -= 1; // exclude final sentinel | |
| 2073 if (lower >= upper) return NULL; // native method; no PcDescs at all | |
| 2074 | |
| 2075 #define assert_LU_OK \ | |
| 2076 /* invariant on lower..upper during the following search: */ \ | |
| 2077 assert(lower->pc_offset() < pc_offset, "sanity"); \ | |
| 2078 assert(upper->pc_offset() >= pc_offset, "sanity") | |
| 2079 assert_LU_OK; | |
| 2080 | |
| 2081 // Use the last successful return as a split point. | |
| 2082 PcDesc* mid = _pc_desc_cache.last_pc_desc(); | |
| 2083 NOT_PRODUCT(++nmethod_stats.pc_desc_searches); | |
| 2084 if (mid->pc_offset() < pc_offset) { | |
| 2085 lower = mid; | |
| 2086 } else { | |
| 2087 upper = mid; | |
| 2088 } | |
| 2089 | |
| 2090 // Take giant steps at first (4096, then 256, then 16, then 1) | |
| 2091 const int LOG2_RADIX = 4 /*smaller steps in debug mode:*/ debug_only(-1); | |
| 2092 const int RADIX = (1 << LOG2_RADIX); | |
| 2093 for (int step = (1 << (LOG2_RADIX*3)); step > 1; step >>= LOG2_RADIX) { | |
| 2094 while ((mid = lower + step) < upper) { | |
| 2095 assert_LU_OK; | |
| 2096 NOT_PRODUCT(++nmethod_stats.pc_desc_searches); | |
| 2097 if (mid->pc_offset() < pc_offset) { | |
| 2098 lower = mid; | |
| 2099 } else { | |
| 2100 upper = mid; | |
| 2101 break; | |
| 2102 } | |
| 2103 } | |
| 2104 assert_LU_OK; | |
| 2105 } | |
| 2106 | |
| 2107 // Sneak up on the value with a linear search of length ~16. | |
| 2108 while (true) { | |
| 2109 assert_LU_OK; | |
| 2110 mid = lower + 1; | |
| 2111 NOT_PRODUCT(++nmethod_stats.pc_desc_searches); | |
| 2112 if (mid->pc_offset() < pc_offset) { | |
| 2113 lower = mid; | |
| 2114 } else { | |
| 2115 upper = mid; | |
| 2116 break; | |
| 2117 } | |
| 2118 } | |
| 2119 #undef assert_LU_OK | |
| 2120 | |
| 2121 if (match_desc(upper, pc_offset, approximate)) { | |
| 2122 assert(upper == linear_search(this, pc_offset, approximate), "search ok"); | |
| 2123 _pc_desc_cache.add_pc_desc(upper); | |
| 2124 return upper; | |
| 2125 } else { | |
| 2126 assert(NULL == linear_search(this, pc_offset, approximate), "search ok"); | |
| 2127 return NULL; | |
| 2128 } | |
| 2129 } | |
| 2130 | |
| 2131 | |
|
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2132 void nmethod::check_all_dependencies(DepChange& changes) { |
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2133 // Checked dependencies are allocated into this ResourceMark |
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2134 ResourceMark rm; |
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2135 |
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2136 // Turn off dependency tracing while actually testing dependencies. |
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2137 NOT_PRODUCT( FlagSetting fs(TraceDependencies, false) ); |
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2138 |
|
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2139 typedef ResourceHashtable<DependencySignature, int, &DependencySignature::hash, |
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2140 &DependencySignature::equals, 11027> DepTable; |
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2141 |
|
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2142 DepTable* table = new DepTable(); |
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2143 |
|
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2144 // Iterate over live nmethods and check dependencies of all nmethods that are not |
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2145 // marked for deoptimization. A particular dependency is only checked once. |
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2146 for(nmethod* nm = CodeCache::alive_nmethod(CodeCache::first()); nm != NULL; nm = CodeCache::alive_nmethod(CodeCache::next(nm))) { |
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2147 if (!nm->is_marked_for_deoptimization()) { |
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2148 for (Dependencies::DepStream deps(nm); deps.next(); ) { |
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2149 // Construct abstraction of a dependency. |
|
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2150 DependencySignature* current_sig = new DependencySignature(deps); |
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2151 |
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2152 // Determine if dependency is already checked. table->put(...) returns |
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2153 // 'true' if the dependency is added (i.e., was not in the hashtable). |
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2154 if (table->put(*current_sig, 1)) { |
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2155 if (deps.check_dependency() != NULL) { |
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2156 // Dependency checking failed. Print out information about the failed |
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2157 // dependency and finally fail with an assert. We can fail here, since |
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2158 // dependency checking is never done in a product build. |
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2159 changes.print(); |
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2160 nm->print(); |
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2161 nm->print_dependencies(); |
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2162 assert(false, "Should have been marked for deoptimization"); |
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2163 } |
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2164 } |
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2165 } |
| 0 | 2166 } |
| 2167 } | |
| 2168 } | |
| 2169 | |
| 2170 bool nmethod::check_dependency_on(DepChange& changes) { | |
| 2171 // What has happened: | |
| 2172 // 1) a new class dependee has been added | |
| 2173 // 2) dependee and all its super classes have been marked | |
| 2174 bool found_check = false; // set true if we are upset | |
| 2175 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
| 2176 // Evaluate only relevant dependencies. | |
| 2177 if (deps.spot_check_dependency_at(changes) != NULL) { | |
| 2178 found_check = true; | |
| 2179 NOT_DEBUG(break); | |
| 2180 } | |
| 2181 } | |
| 2182 return found_check; | |
| 2183 } | |
| 2184 | |
|
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2185 bool nmethod::is_evol_dependent_on(Klass* dependee) { |
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2186 InstanceKlass *dependee_ik = InstanceKlass::cast(dependee); |
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2187 Array<Method*>* dependee_methods = dependee_ik->methods(); |
| 0 | 2188 for (Dependencies::DepStream deps(this); deps.next(); ) { |
| 2189 if (deps.type() == Dependencies::evol_method) { | |
|
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2190 Method* method = deps.method_argument(0); |
| 0 | 2191 for (int j = 0; j < dependee_methods->length(); j++) { |
|
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2192 if (dependee_methods->at(j) == method) { |
| 0 | 2193 // RC_TRACE macro has an embedded ResourceMark |
| 2194 RC_TRACE(0x01000000, | |
| 2195 ("Found evol dependency of nmethod %s.%s(%s) compile_id=%d on method %s.%s(%s)", | |
|
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2196 _method->method_holder()->external_name(), |
| 0 | 2197 _method->name()->as_C_string(), |
| 2198 _method->signature()->as_C_string(), compile_id(), | |
|
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2199 method->method_holder()->external_name(), |
| 0 | 2200 method->name()->as_C_string(), |
| 2201 method->signature()->as_C_string())); | |
| 2202 if (TraceDependencies || LogCompilation) | |
| 2203 deps.log_dependency(dependee); | |
| 2204 return true; | |
| 2205 } | |
| 2206 } | |
| 2207 } | |
| 2208 } | |
| 2209 return false; | |
| 2210 } | |
| 2211 | |
| 2212 // Called from mark_for_deoptimization, when dependee is invalidated. | |
|
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2213 bool nmethod::is_dependent_on_method(Method* dependee) { |
| 0 | 2214 for (Dependencies::DepStream deps(this); deps.next(); ) { |
| 2215 if (deps.type() != Dependencies::evol_method) | |
| 2216 continue; | |
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2217 Method* method = deps.method_argument(0); |
| 0 | 2218 if (method == dependee) return true; |
| 2219 } | |
| 2220 return false; | |
| 2221 } | |
| 2222 | |
| 2223 | |
| 2224 bool nmethod::is_patchable_at(address instr_addr) { | |
| 1748 | 2225 assert(insts_contains(instr_addr), "wrong nmethod used"); |
| 0 | 2226 if (is_zombie()) { |
| 2227 // a zombie may never be patched | |
| 2228 return false; | |
| 2229 } | |
| 2230 return true; | |
| 2231 } | |
| 2232 | |
| 2233 | |
| 2234 address nmethod::continuation_for_implicit_exception(address pc) { | |
| 2235 // Exception happened outside inline-cache check code => we are inside | |
| 2236 // an active nmethod => use cpc to determine a return address | |
| 1748 | 2237 int exception_offset = pc - code_begin(); |
| 0 | 2238 int cont_offset = ImplicitExceptionTable(this).at( exception_offset ); |
| 2239 #ifdef ASSERT | |
| 2240 if (cont_offset == 0) { | |
| 2241 Thread* thread = ThreadLocalStorage::get_thread_slow(); | |
| 2242 ResetNoHandleMark rnm; // Might be called from LEAF/QUICK ENTRY | |
| 2243 HandleMark hm(thread); | |
| 2244 ResourceMark rm(thread); | |
| 2245 CodeBlob* cb = CodeCache::find_blob(pc); | |
| 2246 assert(cb != NULL && cb == this, ""); | |
| 2247 tty->print_cr("implicit exception happened at " INTPTR_FORMAT, pc); | |
| 2248 print(); | |
| 2249 method()->print_codes(); | |
| 2250 print_code(); | |
| 2251 print_pcs(); | |
| 2252 } | |
| 2253 #endif | |
| 1250 | 2254 if (cont_offset == 0) { |
| 2255 // Let the normal error handling report the exception | |
| 2256 return NULL; | |
| 2257 } | |
| 1748 | 2258 return code_begin() + cont_offset; |
| 0 | 2259 } |
| 2260 | |
| 2261 | |
| 2262 | |
| 2263 void nmethod_init() { | |
| 2264 // make sure you didn't forget to adjust the filler fields | |
| 2265 assert(sizeof(nmethod) % oopSize == 0, "nmethod size must be multiple of a word"); | |
| 2266 } | |
| 2267 | |
| 2268 | |
| 2269 //------------------------------------------------------------------------------------------- | |
| 2270 | |
| 2271 | |
| 2272 // QQQ might we make this work from a frame?? | |
| 2273 nmethodLocker::nmethodLocker(address pc) { | |
| 2274 CodeBlob* cb = CodeCache::find_blob(pc); | |
| 2275 guarantee(cb != NULL && cb->is_nmethod(), "bad pc for a nmethod found"); | |
| 2276 _nm = (nmethod*)cb; | |
| 2277 lock_nmethod(_nm); | |
| 2278 } | |
| 2279 | |
|
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2280 // Only JvmtiDeferredEvent::compiled_method_unload_event() |
|
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2281 // should pass zombie_ok == true. |
|
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2282 void nmethodLocker::lock_nmethod(nmethod* nm, bool zombie_ok) { |
| 0 | 2283 if (nm == NULL) return; |
| 2284 Atomic::inc(&nm->_lock_count); | |
|
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|
2285 guarantee(zombie_ok || !nm->is_zombie(), "cannot lock a zombie method"); |
| 0 | 2286 } |
| 2287 | |
| 2288 void nmethodLocker::unlock_nmethod(nmethod* nm) { | |
| 2289 if (nm == NULL) return; | |
| 2290 Atomic::dec(&nm->_lock_count); | |
| 2291 guarantee(nm->_lock_count >= 0, "unmatched nmethod lock/unlock"); | |
| 2292 } | |
| 2293 | |
| 1204 | 2294 |
| 2295 // ----------------------------------------------------------------------------- | |
| 2296 // nmethod::get_deopt_original_pc | |
| 2297 // | |
| 2298 // Return the original PC for the given PC if: | |
| 2299 // (a) the given PC belongs to a nmethod and | |
| 2300 // (b) it is a deopt PC | |
| 2301 address nmethod::get_deopt_original_pc(const frame* fr) { | |
| 2302 if (fr->cb() == NULL) return NULL; | |
| 2303 | |
| 2304 nmethod* nm = fr->cb()->as_nmethod_or_null(); | |
| 2305 if (nm != NULL && nm->is_deopt_pc(fr->pc())) | |
| 2306 return nm->get_original_pc(fr); | |
| 2307 | |
| 2308 return NULL; | |
| 0 | 2309 } |
| 2310 | |
| 2311 | |
| 2312 // ----------------------------------------------------------------------------- | |
|
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2313 // MethodHandle |
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2314 |
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2315 bool nmethod::is_method_handle_return(address return_pc) { |
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2316 if (!has_method_handle_invokes()) return false; |
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2317 PcDesc* pd = pc_desc_at(return_pc); |
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2318 if (pd == NULL) |
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2319 return false; |
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2320 return pd->is_method_handle_invoke(); |
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2321 } |
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2322 |
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2323 |
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|
2324 // ----------------------------------------------------------------------------- |
| 0 | 2325 // Verification |
| 2326 | |
|
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2327 class VerifyOopsClosure: public OopClosure { |
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2328 nmethod* _nm; |
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|
2329 bool _ok; |
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2330 public: |
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2331 VerifyOopsClosure(nmethod* nm) : _nm(nm), _ok(true) { } |
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2332 bool ok() { return _ok; } |
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2333 virtual void do_oop(oop* p) { |
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2334 if ((*p) == NULL || (*p)->is_oop()) return; |
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2335 if (_ok) { |
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2336 _nm->print_nmethod(true); |
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|
2337 _ok = false; |
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|
2338 } |
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|
2339 tty->print_cr("*** non-oop "PTR_FORMAT" found at "PTR_FORMAT" (offset %d)", |
|
12316
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|
2340 (void *)(*p), (intptr_t)p, (int)((intptr_t)p - (intptr_t)_nm)); |
|
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|
2341 } |
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|
2342 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
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|
2343 }; |
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2344 |
| 0 | 2345 void nmethod::verify() { |
| 2346 | |
| 2347 // Hmm. OSR methods can be deopted but not marked as zombie or not_entrant | |
| 2348 // seems odd. | |
| 2349 | |
| 2350 if( is_zombie() || is_not_entrant() ) | |
| 2351 return; | |
| 2352 | |
| 2353 // Make sure all the entry points are correctly aligned for patching. | |
| 2354 NativeJump::check_verified_entry_alignment(entry_point(), verified_entry_point()); | |
| 2355 | |
|
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2356 // assert(method()->is_oop(), "must be valid"); |
| 0 | 2357 |
| 2358 ResourceMark rm; | |
| 2359 | |
| 2360 if (!CodeCache::contains(this)) { | |
|
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|
2361 fatal(err_msg("nmethod at " INTPTR_FORMAT " not in zone", this)); |
| 0 | 2362 } |
| 2363 | |
| 2364 if(is_native_method() ) | |
| 2365 return; | |
| 2366 | |
| 2367 nmethod* nm = CodeCache::find_nmethod(verified_entry_point()); | |
| 2368 if (nm != this) { | |
|
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|
2369 fatal(err_msg("findNMethod did not find this nmethod (" INTPTR_FORMAT ")", |
|
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|
2370 this)); |
| 0 | 2371 } |
| 2372 | |
| 2373 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
| 2374 if (! p->verify(this)) { | |
| 2375 tty->print_cr("\t\tin nmethod at " INTPTR_FORMAT " (pcs)", this); | |
| 2376 } | |
| 2377 } | |
| 2378 | |
|
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|
2379 VerifyOopsClosure voc(this); |
|
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|
2380 oops_do(&voc); |
|
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|
2381 assert(voc.ok(), "embedded oops must be OK"); |
|
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|
2382 verify_scavenge_root_oops(); |
|
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|
2383 |
| 0 | 2384 verify_scopes(); |
| 2385 } | |
| 2386 | |
| 2387 | |
| 2388 void nmethod::verify_interrupt_point(address call_site) { | |
|
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|
2389 // Verify IC only when nmethod installation is finished. |
| 14212 | 2390 bool is_installed = (method()->code() == this) // nmethod is in state 'in_use' and installed |
| 2391 || !this->is_in_use(); // nmethod is installed, but not in 'in_use' state | |
|
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|
2392 if (is_installed) { |
|
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|
2393 Thread *cur = Thread::current(); |
|
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|
2394 if (CompiledIC_lock->owner() == cur || |
|
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|
2395 ((cur->is_VM_thread() || cur->is_ConcurrentGC_thread()) && |
|
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|
2396 SafepointSynchronize::is_at_safepoint())) { |
|
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|
2397 CompiledIC_at(this, call_site); |
|
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|
2398 CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops()); |
|
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|
2399 } else { |
|
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|
2400 MutexLocker ml_verify (CompiledIC_lock); |
|
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|
2401 CompiledIC_at(this, call_site); |
|
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|
2402 } |
| 0 | 2403 } |
|
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|
2404 |
|
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|
2405 PcDesc* pd = pc_desc_at(nativeCall_at(call_site)->return_address()); |
| 0 | 2406 assert(pd != NULL, "PcDesc must exist"); |
| 2407 for (ScopeDesc* sd = new ScopeDesc(this, pd->scope_decode_offset(), | |
|
1253
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|
2408 pd->obj_decode_offset(), pd->should_reexecute(), |
|
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|
2409 pd->return_oop()); |
| 0 | 2410 !sd->is_top(); sd = sd->sender()) { |
| 2411 sd->verify(); | |
| 2412 } | |
| 2413 } | |
| 2414 | |
| 2415 void nmethod::verify_scopes() { | |
| 2416 if( !method() ) return; // Runtime stubs have no scope | |
| 2417 if (method()->is_native()) return; // Ignore stub methods. | |
| 2418 // iterate through all interrupt point | |
| 2419 // and verify the debug information is valid. | |
| 2420 RelocIterator iter((nmethod*)this); | |
| 2421 while (iter.next()) { | |
| 2422 address stub = NULL; | |
| 2423 switch (iter.type()) { | |
| 2424 case relocInfo::virtual_call_type: | |
| 2425 verify_interrupt_point(iter.addr()); | |
| 2426 break; | |
| 2427 case relocInfo::opt_virtual_call_type: | |
| 2428 stub = iter.opt_virtual_call_reloc()->static_stub(); | |
| 2429 verify_interrupt_point(iter.addr()); | |
| 2430 break; | |
| 2431 case relocInfo::static_call_type: | |
| 2432 stub = iter.static_call_reloc()->static_stub(); | |
| 2433 //verify_interrupt_point(iter.addr()); | |
| 2434 break; | |
| 2435 case relocInfo::runtime_call_type: | |
| 2436 address destination = iter.reloc()->value(); | |
| 2437 // Right now there is no way to find out which entries support | |
| 2438 // an interrupt point. It would be nice if we had this | |
| 2439 // information in a table. | |
| 2440 break; | |
| 2441 } | |
| 2442 assert(stub == NULL || stub_contains(stub), "static call stub outside stub section"); | |
| 2443 } | |
| 2444 } | |
| 2445 | |
| 2446 | |
| 2447 // ----------------------------------------------------------------------------- | |
| 2448 // Non-product code | |
| 2449 #ifndef PRODUCT | |
| 2450 | |
|
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2451 class DebugScavengeRoot: public OopClosure { |
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|
2452 nmethod* _nm; |
|
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|
2453 bool _ok; |
|
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|
2454 public: |
|
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|
2455 DebugScavengeRoot(nmethod* nm) : _nm(nm), _ok(true) { } |
|
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|
2456 bool ok() { return _ok; } |
|
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|
2457 virtual void do_oop(oop* p) { |
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|
2458 if ((*p) == NULL || !(*p)->is_scavengable()) return; |
|
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6863023: need non-perm oops in code cache for JSR 292
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|
2459 if (_ok) { |
|
148e5441d916
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diff
changeset
|
2460 _nm->print_nmethod(true); |
|
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6863023: need non-perm oops in code cache for JSR 292
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931
diff
changeset
|
2461 _ok = false; |
|
148e5441d916
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diff
changeset
|
2462 } |
|
3377
2aa9ddbb9e60
7041789: 30% perf regression with c2/arm following 7017732
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2405
diff
changeset
|
2463 tty->print_cr("*** scavengable oop "PTR_FORMAT" found at "PTR_FORMAT" (offset %d)", |
|
12316
190899198332
7195622: CheckUnhandledOops has limited usefulness now
hseigel
parents:
12175
diff
changeset
|
2464 (void *)(*p), (intptr_t)p, (int)((intptr_t)p - (intptr_t)_nm)); |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2465 (*p)->print(); |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
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931
diff
changeset
|
2466 } |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
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931
diff
changeset
|
2467 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2468 }; |
| 0 | 2469 |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2470 void nmethod::verify_scavenge_root_oops() { |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2471 if (!on_scavenge_root_list()) { |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
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parents:
931
diff
changeset
|
2472 // Actually look inside, to verify the claim that it's clean. |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
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931
diff
changeset
|
2473 DebugScavengeRoot debug_scavenge_root(this); |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
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931
diff
changeset
|
2474 oops_do(&debug_scavenge_root); |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
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931
diff
changeset
|
2475 if (!debug_scavenge_root.ok()) |
|
3377
2aa9ddbb9e60
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jmasa
parents:
2405
diff
changeset
|
2476 fatal("found an unadvertised bad scavengable oop in the code cache"); |
| 0 | 2477 } |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
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parents:
931
diff
changeset
|
2478 assert(scavenge_root_not_marked(), ""); |
| 0 | 2479 } |
| 2480 | |
|
100
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30
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changeset
|
2481 #endif // PRODUCT |
| 0 | 2482 |
| 2483 // Printing operations | |
| 2484 | |
| 2485 void nmethod::print() const { | |
| 2486 ResourceMark rm; | |
| 2487 ttyLocker ttyl; // keep the following output all in one block | |
| 2488 | |
|
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2376
diff
changeset
|
2489 tty->print("Compiled method "); |
| 0 | 2490 |
| 2491 if (is_compiled_by_c1()) { | |
| 2492 tty->print("(c1) "); | |
| 2493 } else if (is_compiled_by_c2()) { | |
| 2494 tty->print("(c2) "); | |
| 1692 | 2495 } else if (is_compiled_by_shark()) { |
| 2496 tty->print("(shark) "); | |
| 0 | 2497 } else { |
| 2498 tty->print("(nm) "); | |
| 2499 } | |
| 2500 | |
|
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
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2376
diff
changeset
|
2501 print_on(tty, NULL); |
|
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
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diff
changeset
|
2502 |
| 0 | 2503 if (WizardMode) { |
| 2504 tty->print("((nmethod*) "INTPTR_FORMAT ") ", this); | |
| 2505 tty->print(" for method " INTPTR_FORMAT , (address)method()); | |
| 2506 tty->print(" { "); | |
| 2507 if (is_in_use()) tty->print("in_use "); | |
| 2508 if (is_not_entrant()) tty->print("not_entrant "); | |
| 2509 if (is_zombie()) tty->print("zombie "); | |
| 2510 if (is_unloaded()) tty->print("unloaded "); | |
|
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diff
changeset
|
2511 if (on_scavenge_root_list()) tty->print("scavenge_root "); |
| 0 | 2512 tty->print_cr("}:"); |
| 2513 } | |
| 2514 if (size () > 0) tty->print_cr(" total in heap [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
| 2515 (address)this, | |
| 2516 (address)this + size(), | |
| 2517 size()); | |
| 2518 if (relocation_size () > 0) tty->print_cr(" relocation [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
| 2519 relocation_begin(), | |
| 2520 relocation_end(), | |
| 2521 relocation_size()); | |
|
1762
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
2522 if (consts_size () > 0) tty->print_cr(" constants [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
|
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
2523 consts_begin(), |
|
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
2524 consts_end(), |
|
0878d7bae69f
6961697: move nmethod constants section before instruction section
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1748
diff
changeset
|
2525 consts_size()); |
| 1748 | 2526 if (insts_size () > 0) tty->print_cr(" main code [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
| 2527 insts_begin(), | |
| 2528 insts_end(), | |
| 2529 insts_size()); | |
| 0 | 2530 if (stub_size () > 0) tty->print_cr(" stub code [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
| 2531 stub_begin(), | |
| 2532 stub_end(), | |
| 2533 stub_size()); | |
|
1563
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
1538
diff
changeset
|
2534 if (oops_size () > 0) tty->print_cr(" oops [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
|
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
1538
diff
changeset
|
2535 oops_begin(), |
|
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
1538
diff
changeset
|
2536 oops_end(), |
|
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
1538
diff
changeset
|
2537 oops_size()); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2538 if (metadata_size () > 0) tty->print_cr(" metadata [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2539 metadata_begin(), |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2540 metadata_end(), |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2541 metadata_size()); |
| 0 | 2542 if (scopes_data_size () > 0) tty->print_cr(" scopes data [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
| 2543 scopes_data_begin(), | |
| 2544 scopes_data_end(), | |
| 2545 scopes_data_size()); | |
| 2546 if (scopes_pcs_size () > 0) tty->print_cr(" scopes pcs [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
| 2547 scopes_pcs_begin(), | |
| 2548 scopes_pcs_end(), | |
| 2549 scopes_pcs_size()); | |
| 2550 if (dependencies_size () > 0) tty->print_cr(" dependencies [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
| 2551 dependencies_begin(), | |
| 2552 dependencies_end(), | |
| 2553 dependencies_size()); | |
| 2554 if (handler_table_size() > 0) tty->print_cr(" handler table [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
| 2555 handler_table_begin(), | |
| 2556 handler_table_end(), | |
| 2557 handler_table_size()); | |
| 2558 if (nul_chk_table_size() > 0) tty->print_cr(" nul chk table [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
| 2559 nul_chk_table_begin(), | |
| 2560 nul_chk_table_end(), | |
| 2561 nul_chk_table_size()); | |
| 2562 } | |
| 2563 | |
|
100
c7c777385a15
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jrose
parents:
30
diff
changeset
|
2564 void nmethod::print_code() { |
|
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2565 HandleMark hm; |
|
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2566 ResourceMark m; |
|
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
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30
diff
changeset
|
2567 Disassembler::decode(this); |
|
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2568 } |
|
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2569 |
|
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
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30
diff
changeset
|
2570 |
|
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2571 #ifndef PRODUCT |
| 0 | 2572 |
| 2573 void nmethod::print_scopes() { | |
| 2574 // Find the first pc desc for all scopes in the code and print it. | |
| 2575 ResourceMark rm; | |
| 2576 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
| 2577 if (p->scope_decode_offset() == DebugInformationRecorder::serialized_null) | |
| 2578 continue; | |
| 2579 | |
| 2580 ScopeDesc* sd = scope_desc_at(p->real_pc(this)); | |
| 2581 sd->print_on(tty, p); | |
| 2582 } | |
| 2583 } | |
| 2584 | |
| 2585 void nmethod::print_dependencies() { | |
| 2586 ResourceMark rm; | |
| 2587 ttyLocker ttyl; // keep the following output all in one block | |
| 2588 tty->print_cr("Dependencies:"); | |
| 2589 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
| 2590 deps.print_dependency(); | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2591 Klass* ctxk = deps.context_type(); |
| 0 | 2592 if (ctxk != NULL) { |
| 6983 | 2593 if (ctxk->oop_is_instance() && ((InstanceKlass*)ctxk)->is_dependent_nmethod(this)) { |
| 2594 tty->print_cr(" [nmethod<=klass]%s", ctxk->external_name()); | |
| 0 | 2595 } |
| 2596 } | |
| 2597 deps.log_dependency(); // put it into the xml log also | |
| 2598 } | |
| 2599 } | |
| 2600 | |
| 2601 | |
| 2602 void nmethod::print_relocations() { | |
| 2603 ResourceMark m; // in case methods get printed via the debugger | |
| 2604 tty->print_cr("relocations:"); | |
| 2605 RelocIterator iter(this); | |
| 2606 iter.print(); | |
| 2607 if (UseRelocIndex) { | |
| 2608 jint* index_end = (jint*)relocation_end() - 1; | |
| 2609 jint index_size = *index_end; | |
| 2610 jint* index_start = (jint*)( (address)index_end - index_size ); | |
| 2611 tty->print_cr(" index @" INTPTR_FORMAT ": index_size=%d", index_start, index_size); | |
| 2612 if (index_size > 0) { | |
| 2613 jint* ip; | |
| 2614 for (ip = index_start; ip+2 <= index_end; ip += 2) | |
| 2615 tty->print_cr(" (%d %d) addr=" INTPTR_FORMAT " @" INTPTR_FORMAT, | |
| 2616 ip[0], | |
| 2617 ip[1], | |
| 2618 header_end()+ip[0], | |
| 2619 relocation_begin()-1+ip[1]); | |
| 2620 for (; ip < index_end; ip++) | |
| 2621 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
|
2622 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
|
2623 ip++; |
| 0 | 2624 tty->print_cr("reloc_end @" INTPTR_FORMAT ":", ip); |
| 2625 } | |
| 2626 } | |
| 2627 } | |
| 2628 | |
| 2629 | |
| 2630 void nmethod::print_pcs() { | |
| 2631 ResourceMark m; // in case methods get printed via debugger | |
| 2632 tty->print_cr("pc-bytecode offsets:"); | |
| 2633 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
| 2634 p->print(this); | |
| 2635 } | |
| 2636 } | |
| 2637 | |
|
100
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6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2638 #endif // PRODUCT |
| 0 | 2639 |
| 2640 const char* nmethod::reloc_string_for(u_char* begin, u_char* end) { | |
| 2641 RelocIterator iter(this, begin, end); | |
| 2642 bool have_one = false; | |
| 2643 while (iter.next()) { | |
| 2644 have_one = true; | |
| 2645 switch (iter.type()) { | |
| 2646 case relocInfo::none: return "no_reloc"; | |
| 2647 case relocInfo::oop_type: { | |
| 2648 stringStream st; | |
| 2649 oop_Relocation* r = iter.oop_reloc(); | |
| 2650 oop obj = r->oop_value(); | |
| 2651 st.print("oop("); | |
| 2652 if (obj == NULL) st.print("NULL"); | |
| 2653 else obj->print_value_on(&st); | |
| 2654 st.print(")"); | |
| 2655 return st.as_string(); | |
| 2656 } | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2657 case relocInfo::metadata_type: { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2658 stringStream st; |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2659 metadata_Relocation* r = iter.metadata_reloc(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2660 Metadata* obj = r->metadata_value(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2661 st.print("metadata("); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2662 if (obj == NULL) st.print("NULL"); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2663 else obj->print_value_on(&st); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2664 st.print(")"); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2665 return st.as_string(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2666 } |
| 0 | 2667 case relocInfo::virtual_call_type: return "virtual_call"; |
| 2668 case relocInfo::opt_virtual_call_type: return "optimized virtual_call"; | |
| 2669 case relocInfo::static_call_type: return "static_call"; | |
| 2670 case relocInfo::static_stub_type: return "static_stub"; | |
| 2671 case relocInfo::runtime_call_type: return "runtime_call"; | |
| 2672 case relocInfo::external_word_type: return "external_word"; | |
| 2673 case relocInfo::internal_word_type: return "internal_word"; | |
| 2674 case relocInfo::section_word_type: return "section_word"; | |
| 2675 case relocInfo::poll_type: return "poll"; | |
| 2676 case relocInfo::poll_return_type: return "poll_return"; | |
| 2677 case relocInfo::type_mask: return "type_bit_mask"; | |
| 2678 } | |
| 2679 } | |
| 2680 return have_one ? "other" : NULL; | |
| 2681 } | |
| 2682 | |
| 2683 // Return a the last scope in (begin..end] | |
| 2684 ScopeDesc* nmethod::scope_desc_in(address begin, address end) { | |
| 2685 PcDesc* p = pc_desc_near(begin+1); | |
| 2686 if (p != NULL && p->real_pc(this) <= end) { | |
| 2687 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
|
2688 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
|
2689 p->return_oop()); |
| 0 | 2690 } |
| 2691 return NULL; | |
| 2692 } | |
| 2693 | |
|
6796
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
parents:
6792
diff
changeset
|
2694 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
|
2695 if (block_begin == entry_point()) stream->print_cr("[Entry Point]"); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2696 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
|
2697 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
|
2698 if (block_begin == stub_begin()) stream->print_cr("[Stub Code]"); |
| 1204 | 2699 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
|
2700 |
|
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
twisti
parents:
1644
diff
changeset
|
2701 if (has_method_handle_invokes()) |
|
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
twisti
parents:
1644
diff
changeset
|
2702 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
|
2703 |
|
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2704 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:
1644
diff
changeset
|
2705 |
|
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2706 if (block_begin == entry_point()) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2707 methodHandle m = method(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2708 if (m.not_null()) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2709 stream->print(" # "); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2710 m->print_value_on(stream); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2711 stream->cr(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2712 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2713 if (m.not_null() && !is_osr_method()) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2714 ResourceMark rm; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2715 int sizeargs = m->size_of_parameters(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2716 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
|
2717 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, sizeargs); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2718 { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2719 int sig_index = 0; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2720 if (!m->is_static()) |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2721 sig_bt[sig_index++] = T_OBJECT; // 'this' |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2722 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
|
2723 BasicType t = ss.type(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2724 sig_bt[sig_index++] = t; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2725 if (type2size[t] == 2) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2726 sig_bt[sig_index++] = T_VOID; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2727 } else { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2728 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
|
2729 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2730 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2731 assert(sig_index == sizeargs, ""); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2732 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2733 const char* spname = "sp"; // make arch-specific? |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2734 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
|
2735 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
|
2736 int tab1 = 14, tab2 = 24; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2737 int sig_index = 0; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2738 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
|
2739 bool did_old_sp = false; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2740 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
|
2741 bool at_this = (arg_index == -1); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2742 bool at_old_sp = false; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2743 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
|
2744 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
|
2745 if (at_this) |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2746 stream->print(" # this: "); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2747 else |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2748 stream->print(" # parm%d: ", arg_index); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2749 stream->move_to(tab1); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2750 VMReg fst = regs[sig_index].first(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2751 VMReg snd = regs[sig_index].second(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2752 if (fst->is_reg()) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2753 stream->print("%s", fst->name()); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2754 if (snd->is_valid()) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2755 stream->print(":%s", snd->name()); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2756 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2757 } else if (fst->is_stack()) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2758 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
|
2759 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
|
2760 stream->print("[%s+0x%x]", spname, offset); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2761 } else { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2762 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
|
2763 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2764 stream->print(" "); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2765 stream->move_to(tab2); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2766 stream->print("= "); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2767 if (at_this) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2768 m->method_holder()->print_value_on(stream); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2769 } else { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2770 bool did_name = false; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2771 if (!at_this && ss.is_object()) { |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2142
diff
changeset
|
2772 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
|
2773 if (name != NULL) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2774 name->print_value_on(stream); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2775 did_name = true; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2776 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2777 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2778 if (!did_name) |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2779 stream->print("%s", type2name(t)); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2780 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2781 if (at_old_sp) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2782 stream->print(" (%s of caller)", spname); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2783 did_old_sp = true; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2784 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2785 stream->cr(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2786 sig_index += type2size[t]; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2787 arg_index += 1; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2788 if (!at_this) ss.next(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2789 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2790 if (!did_old_sp) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2791 stream->print(" # "); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2792 stream->move_to(tab1); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2793 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
|
2794 stream->print(" (%s of caller)", spname); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2795 stream->cr(); |
|
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 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2798 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2799 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2800 |
| 0 | 2801 void nmethod::print_code_comment_on(outputStream* st, int column, u_char* begin, u_char* end) { |
| 2802 // First, find an oopmap in (begin, end]. | |
| 2803 // We use the odd half-closed interval so that oop maps and scope descs | |
| 2804 // which are tied to the byte after a call are printed with the call itself. | |
| 1748 | 2805 address base = code_begin(); |
| 0 | 2806 OopMapSet* oms = oop_maps(); |
| 2807 if (oms != NULL) { | |
| 2808 for (int i = 0, imax = oms->size(); i < imax; i++) { | |
| 2809 OopMap* om = oms->at(i); | |
| 2810 address pc = base + om->offset(); | |
| 2811 if (pc > begin) { | |
| 2812 if (pc <= end) { | |
|
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2813 st->move_to(column); |
|
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2814 st->print("; "); |
|
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2815 om->print_on(st); |
| 0 | 2816 } |
| 2817 break; | |
| 2818 } | |
| 2819 } | |
| 2820 } | |
|
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2821 |
|
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2822 // Print any debug info present at this pc. |
| 0 | 2823 ScopeDesc* sd = scope_desc_in(begin, end); |
| 2824 if (sd != NULL) { | |
|
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2825 st->move_to(column); |
| 0 | 2826 if (sd->bci() == SynchronizationEntryBCI) { |
| 2827 st->print(";*synchronization entry"); | |
| 2828 } else { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2829 if (sd->method() == NULL) { |
|
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2830 st->print("method is NULL"); |
| 0 | 2831 } else if (sd->method()->is_native()) { |
|
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2832 st->print("method is native"); |
| 0 | 2833 } else { |
| 2142 | 2834 Bytecodes::Code bc = sd->method()->java_code_at(sd->bci()); |
| 0 | 2835 st->print(";*%s", Bytecodes::name(bc)); |
| 2836 switch (bc) { | |
| 2837 case Bytecodes::_invokevirtual: | |
| 2838 case Bytecodes::_invokespecial: | |
| 2839 case Bytecodes::_invokestatic: | |
| 2840 case Bytecodes::_invokeinterface: | |
| 2841 { | |
| 2142 | 2842 Bytecode_invoke invoke(sd->method(), sd->bci()); |
| 0 | 2843 st->print(" "); |
| 2142 | 2844 if (invoke.name() != NULL) |
| 2845 invoke.name()->print_symbol_on(st); | |
| 0 | 2846 else |
| 2847 st->print("<UNKNOWN>"); | |
| 2848 break; | |
| 2849 } | |
| 2850 case Bytecodes::_getfield: | |
| 2851 case Bytecodes::_putfield: | |
| 2852 case Bytecodes::_getstatic: | |
| 2853 case Bytecodes::_putstatic: | |
| 2854 { | |
| 2142 | 2855 Bytecode_field field(sd->method(), sd->bci()); |
| 0 | 2856 st->print(" "); |
| 2142 | 2857 if (field.name() != NULL) |
| 2858 field.name()->print_symbol_on(st); | |
| 0 | 2859 else |
| 2860 st->print("<UNKNOWN>"); | |
| 2861 } | |
| 2862 } | |
| 2863 } | |
| 2864 } | |
|
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2865 |
| 0 | 2866 // Print all scopes |
| 2867 for (;sd != NULL; sd = sd->sender()) { | |
|
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2868 st->move_to(column); |
| 0 | 2869 st->print("; -"); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2870 if (sd->method() == NULL) { |
|
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2871 st->print("method is NULL"); |
| 0 | 2872 } else { |
| 2873 sd->method()->print_short_name(st); | |
| 2874 } | |
| 2875 int lineno = sd->method()->line_number_from_bci(sd->bci()); | |
| 2876 if (lineno != -1) { | |
| 2877 st->print("@%d (line %d)", sd->bci(), lineno); | |
| 2878 } else { | |
| 2879 st->print("@%d", sd->bci()); | |
| 2880 } | |
| 2881 st->cr(); | |
| 2882 } | |
| 2883 } | |
| 2884 | |
| 2885 // Print relocation information | |
| 2886 const char* str = reloc_string_for(begin, end); | |
| 2887 if (str != NULL) { | |
| 2888 if (sd != NULL) st->cr(); | |
|
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2889 st->move_to(column); |
| 0 | 2890 st->print("; {%s}", str); |
| 2891 } | |
| 1748 | 2892 int cont_offset = ImplicitExceptionTable(this).at(begin - code_begin()); |
| 0 | 2893 if (cont_offset != 0) { |
|
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2894 st->move_to(column); |
| 1748 | 2895 st->print("; implicit exception: dispatches to " INTPTR_FORMAT, code_begin() + cont_offset); |
| 0 | 2896 } |
| 2897 | |
| 2898 } | |
| 2899 | |
|
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2900 #ifndef PRODUCT |
|
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2901 |
| 0 | 2902 void nmethod::print_value_on(outputStream* st) const { |
|
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2903 st->print("nmethod"); |
|
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2904 print_on(st, NULL); |
| 0 | 2905 } |
| 2906 | |
| 2907 void nmethod::print_calls(outputStream* st) { | |
| 2908 RelocIterator iter(this); | |
| 2909 while (iter.next()) { | |
| 2910 switch (iter.type()) { | |
| 2911 case relocInfo::virtual_call_type: | |
| 2912 case relocInfo::opt_virtual_call_type: { | |
| 2913 VerifyMutexLocker mc(CompiledIC_lock); | |
| 2914 CompiledIC_at(iter.reloc())->print(); | |
| 2915 break; | |
| 2916 } | |
| 2917 case relocInfo::static_call_type: | |
| 2918 st->print_cr("Static call at " INTPTR_FORMAT, iter.reloc()->addr()); | |
| 2919 compiledStaticCall_at(iter.reloc())->print(); | |
| 2920 break; | |
| 2921 } | |
| 2922 } | |
| 2923 } | |
| 2924 | |
| 2925 void nmethod::print_handler_table() { | |
| 2926 ExceptionHandlerTable(this).print(); | |
| 2927 } | |
| 2928 | |
| 2929 void nmethod::print_nul_chk_table() { | |
| 1748 | 2930 ImplicitExceptionTable(this).print(code_begin()); |
| 0 | 2931 } |
| 2932 | |
| 2933 void nmethod::print_statistics() { | |
| 2934 ttyLocker ttyl; | |
| 2935 if (xtty != NULL) xtty->head("statistics type='nmethod'"); | |
| 2936 nmethod_stats.print_native_nmethod_stats(); | |
| 2937 nmethod_stats.print_nmethod_stats(); | |
| 2938 DebugInformationRecorder::print_statistics(); | |
| 2939 nmethod_stats.print_pc_stats(); | |
| 2940 Dependencies::print_statistics(); | |
| 2941 if (xtty != NULL) xtty->tail("statistics"); | |
| 2942 } | |
| 2943 | |
| 2944 #endif // PRODUCT |