Mercurial > hg > truffle
annotate src/share/vm/code/nmethod.cpp @ 7062:8c5333c80cfd
increased CompileThreshold to increase reliability of profiling information
increased InitialCodeCacheSize to fit the bootstrapping
added flag -XX:GraalClassPath to allow providing a .jar or .zip file that contains all Graal classes
added support for the flag -XX:TraceCompilationPolicy to the Graal-specific compilation policy
| author | Christian Haeubl <haeubl@ssw.jku.at> |
|---|---|
| date | Thu, 15 Nov 2012 11:40:50 +0100 |
| parents | 957c266d8bc5 |
| children | 7d815d842ee0 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 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" | |
| 37 #include "oops/methodDataOop.hpp" | |
| 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" | |
| 42 #include "utilities/dtrace.hpp" | |
| 43 #include "utilities/events.hpp" | |
| 44 #include "utilities/xmlstream.hpp" | |
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45 #include "utilities/machineCodePrinter.hpp" |
| 1972 | 46 #ifdef SHARK |
| 47 #include "shark/sharkCompiler.hpp" | |
| 48 #endif | |
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49 #ifdef GRAAL |
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50 #include "graal/graalJavaAccess.hpp" |
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51 #endif |
| 0 | 52 |
| 53 #ifdef DTRACE_ENABLED | |
| 54 | |
| 55 // Only bother with this argument setup if dtrace is available | |
| 56 | |
| 4006 | 57 #ifndef USDT2 |
| 0 | 58 HS_DTRACE_PROBE_DECL8(hotspot, compiled__method__load, |
| 59 const char*, int, const char*, int, const char*, int, void*, size_t); | |
| 60 | |
| 61 HS_DTRACE_PROBE_DECL6(hotspot, compiled__method__unload, | |
| 62 char*, int, char*, int, char*, int); | |
| 63 | |
| 64 #define DTRACE_METHOD_UNLOAD_PROBE(method) \ | |
| 65 { \ | |
| 66 methodOop m = (method); \ | |
| 67 if (m != NULL) { \ | |
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68 Symbol* klass_name = m->klass_name(); \ |
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69 Symbol* name = m->name(); \ |
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70 Symbol* signature = m->signature(); \ |
| 0 | 71 HS_DTRACE_PROBE6(hotspot, compiled__method__unload, \ |
| 72 klass_name->bytes(), klass_name->utf8_length(), \ | |
| 73 name->bytes(), name->utf8_length(), \ | |
| 74 signature->bytes(), signature->utf8_length()); \ | |
| 75 } \ | |
| 76 } | |
| 4006 | 77 #else /* USDT2 */ |
| 78 #define DTRACE_METHOD_UNLOAD_PROBE(method) \ | |
| 79 { \ | |
| 80 methodOop m = (method); \ | |
| 81 if (m != NULL) { \ | |
| 82 Symbol* klass_name = m->klass_name(); \ | |
| 83 Symbol* name = m->name(); \ | |
| 84 Symbol* signature = m->signature(); \ | |
| 85 HOTSPOT_COMPILED_METHOD_UNLOAD( \ | |
| 86 (char *) klass_name->bytes(), klass_name->utf8_length(), \ | |
| 87 (char *) name->bytes(), name->utf8_length(), \ | |
| 88 (char *) signature->bytes(), signature->utf8_length()); \ | |
| 89 } \ | |
| 90 } | |
| 91 #endif /* USDT2 */ | |
| 0 | 92 |
| 93 #else // ndef DTRACE_ENABLED | |
| 94 | |
| 95 #define DTRACE_METHOD_UNLOAD_PROBE(method) | |
| 96 | |
| 97 #endif | |
| 98 | |
| 99 bool nmethod::is_compiled_by_c1() const { | |
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100 if (compiler() == NULL || method() == NULL) return false; // can happen during debug printing |
| 0 | 101 if (is_native_method()) return false; |
| 102 return compiler()->is_c1(); | |
| 103 } | |
| 104 bool nmethod::is_compiled_by_c2() const { | |
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105 if (compiler() == NULL || method() == NULL) return false; // can happen during debug printing |
| 0 | 106 if (is_native_method()) return false; |
| 107 return compiler()->is_c2(); | |
| 108 } | |
| 1692 | 109 bool nmethod::is_compiled_by_shark() const { |
| 110 if (is_native_method()) return false; | |
| 111 assert(compiler() != NULL, "must be"); | |
| 112 return compiler()->is_shark(); | |
| 113 } | |
| 0 | 114 |
| 115 | |
| 116 | |
| 117 //--------------------------------------------------------------------------------- | |
| 118 // NMethod statistics | |
| 119 // They are printed under various flags, including: | |
| 120 // PrintC1Statistics, PrintOptoStatistics, LogVMOutput, and LogCompilation. | |
| 121 // (In the latter two cases, they like other stats are printed to the log only.) | |
| 122 | |
| 123 // These variables are put into one block to reduce relocations | |
| 124 // and make it simpler to print from the debugger. | |
| 125 static | |
| 126 struct nmethod_stats_struct { | |
| 127 int nmethod_count; | |
| 128 int total_size; | |
| 129 int relocation_size; | |
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130 int consts_size; |
| 1748 | 131 int insts_size; |
| 0 | 132 int stub_size; |
| 133 int scopes_data_size; | |
| 134 int scopes_pcs_size; | |
| 135 int dependencies_size; | |
| 136 int handler_table_size; | |
| 137 int nul_chk_table_size; | |
| 138 int oops_size; | |
| 139 | |
| 140 void note_nmethod(nmethod* nm) { | |
| 141 nmethod_count += 1; | |
| 142 total_size += nm->size(); | |
| 143 relocation_size += nm->relocation_size(); | |
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144 consts_size += nm->consts_size(); |
| 1748 | 145 insts_size += nm->insts_size(); |
| 0 | 146 stub_size += nm->stub_size(); |
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147 oops_size += nm->oops_size(); |
| 0 | 148 scopes_data_size += nm->scopes_data_size(); |
| 149 scopes_pcs_size += nm->scopes_pcs_size(); | |
| 150 dependencies_size += nm->dependencies_size(); | |
| 151 handler_table_size += nm->handler_table_size(); | |
| 152 nul_chk_table_size += nm->nul_chk_table_size(); | |
| 153 } | |
| 154 void print_nmethod_stats() { | |
| 155 if (nmethod_count == 0) return; | |
| 156 tty->print_cr("Statistics for %d bytecoded nmethods:", nmethod_count); | |
| 157 if (total_size != 0) tty->print_cr(" total in heap = %d", total_size); | |
| 158 if (relocation_size != 0) tty->print_cr(" relocation = %d", relocation_size); | |
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159 if (consts_size != 0) tty->print_cr(" constants = %d", consts_size); |
| 1748 | 160 if (insts_size != 0) tty->print_cr(" main code = %d", insts_size); |
| 0 | 161 if (stub_size != 0) tty->print_cr(" stub code = %d", stub_size); |
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162 if (oops_size != 0) tty->print_cr(" oops = %d", oops_size); |
| 0 | 163 if (scopes_data_size != 0) tty->print_cr(" scopes data = %d", scopes_data_size); |
| 164 if (scopes_pcs_size != 0) tty->print_cr(" scopes pcs = %d", scopes_pcs_size); | |
| 165 if (dependencies_size != 0) tty->print_cr(" dependencies = %d", dependencies_size); | |
| 166 if (handler_table_size != 0) tty->print_cr(" handler table = %d", handler_table_size); | |
| 167 if (nul_chk_table_size != 0) tty->print_cr(" nul chk table = %d", nul_chk_table_size); | |
| 168 } | |
| 169 | |
| 170 int native_nmethod_count; | |
| 171 int native_total_size; | |
| 172 int native_relocation_size; | |
| 1748 | 173 int native_insts_size; |
| 0 | 174 int native_oops_size; |
| 175 void note_native_nmethod(nmethod* nm) { | |
| 176 native_nmethod_count += 1; | |
| 177 native_total_size += nm->size(); | |
| 178 native_relocation_size += nm->relocation_size(); | |
| 1748 | 179 native_insts_size += nm->insts_size(); |
| 0 | 180 native_oops_size += nm->oops_size(); |
| 181 } | |
| 182 void print_native_nmethod_stats() { | |
| 183 if (native_nmethod_count == 0) return; | |
| 184 tty->print_cr("Statistics for %d native nmethods:", native_nmethod_count); | |
| 185 if (native_total_size != 0) tty->print_cr(" N. total size = %d", native_total_size); | |
| 186 if (native_relocation_size != 0) tty->print_cr(" N. relocation = %d", native_relocation_size); | |
| 1748 | 187 if (native_insts_size != 0) tty->print_cr(" N. main code = %d", native_insts_size); |
| 0 | 188 if (native_oops_size != 0) tty->print_cr(" N. oops = %d", native_oops_size); |
| 189 } | |
| 190 | |
| 191 int pc_desc_resets; // number of resets (= number of caches) | |
| 192 int pc_desc_queries; // queries to nmethod::find_pc_desc | |
| 193 int pc_desc_approx; // number of those which have approximate true | |
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194 int pc_desc_repeats; // number of _pc_descs[0] hits |
| 0 | 195 int pc_desc_hits; // number of LRU cache hits |
| 196 int pc_desc_tests; // total number of PcDesc examinations | |
| 197 int pc_desc_searches; // total number of quasi-binary search steps | |
| 198 int pc_desc_adds; // number of LUR cache insertions | |
| 199 | |
| 200 void print_pc_stats() { | |
| 201 tty->print_cr("PcDesc Statistics: %d queries, %.2f comparisons per query", | |
| 202 pc_desc_queries, | |
| 203 (double)(pc_desc_tests + pc_desc_searches) | |
| 204 / pc_desc_queries); | |
| 205 tty->print_cr(" caches=%d queries=%d/%d, hits=%d+%d, tests=%d+%d, adds=%d", | |
| 206 pc_desc_resets, | |
| 207 pc_desc_queries, pc_desc_approx, | |
| 208 pc_desc_repeats, pc_desc_hits, | |
| 209 pc_desc_tests, pc_desc_searches, pc_desc_adds); | |
| 210 } | |
| 211 } nmethod_stats; | |
| 212 | |
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213 |
| 0 | 214 //--------------------------------------------------------------------------------- |
| 215 | |
| 216 | |
| 217 ExceptionCache::ExceptionCache(Handle exception, address pc, address handler) { | |
| 218 assert(pc != NULL, "Must be non null"); | |
| 219 assert(exception.not_null(), "Must be non null"); | |
| 220 assert(handler != NULL, "Must be non null"); | |
| 221 | |
| 222 _count = 0; | |
| 223 _exception_type = exception->klass(); | |
| 224 _next = NULL; | |
| 225 | |
| 226 add_address_and_handler(pc,handler); | |
| 227 } | |
| 228 | |
| 229 | |
| 230 address ExceptionCache::match(Handle exception, address pc) { | |
| 231 assert(pc != NULL,"Must be non null"); | |
| 232 assert(exception.not_null(),"Must be non null"); | |
| 233 if (exception->klass() == exception_type()) { | |
| 234 return (test_address(pc)); | |
| 235 } | |
| 236 | |
| 237 return NULL; | |
| 238 } | |
| 239 | |
| 240 | |
| 241 bool ExceptionCache::match_exception_with_space(Handle exception) { | |
| 242 assert(exception.not_null(),"Must be non null"); | |
| 243 if (exception->klass() == exception_type() && count() < cache_size) { | |
| 244 return true; | |
| 245 } | |
| 246 return false; | |
| 247 } | |
| 248 | |
| 249 | |
| 250 address ExceptionCache::test_address(address addr) { | |
| 251 for (int i=0; i<count(); i++) { | |
| 252 if (pc_at(i) == addr) { | |
| 253 return handler_at(i); | |
| 254 } | |
| 255 } | |
| 256 return NULL; | |
| 257 } | |
| 258 | |
| 259 | |
| 260 bool ExceptionCache::add_address_and_handler(address addr, address handler) { | |
| 261 if (test_address(addr) == handler) return true; | |
| 262 if (count() < cache_size) { | |
| 263 set_pc_at(count(),addr); | |
| 264 set_handler_at(count(), handler); | |
| 265 increment_count(); | |
| 266 return true; | |
| 267 } | |
| 268 return false; | |
| 269 } | |
| 270 | |
| 271 | |
| 272 // private method for handling exception cache | |
| 273 // These methods are private, and used to manipulate the exception cache | |
| 274 // directly. | |
| 275 ExceptionCache* nmethod::exception_cache_entry_for_exception(Handle exception) { | |
| 276 ExceptionCache* ec = exception_cache(); | |
| 277 while (ec != NULL) { | |
| 278 if (ec->match_exception_with_space(exception)) { | |
| 279 return ec; | |
| 280 } | |
| 281 ec = ec->next(); | |
| 282 } | |
| 283 return NULL; | |
| 284 } | |
| 285 | |
| 286 | |
| 287 //----------------------------------------------------------------------------- | |
| 288 | |
| 289 | |
| 290 // Helper used by both find_pc_desc methods. | |
| 291 static inline bool match_desc(PcDesc* pc, int pc_offset, bool approximate) { | |
| 292 NOT_PRODUCT(++nmethod_stats.pc_desc_tests); | |
| 293 if (!approximate) | |
| 294 return pc->pc_offset() == pc_offset; | |
| 295 else | |
| 296 return (pc-1)->pc_offset() < pc_offset && pc_offset <= pc->pc_offset(); | |
| 297 } | |
| 298 | |
| 299 void PcDescCache::reset_to(PcDesc* initial_pc_desc) { | |
| 300 if (initial_pc_desc == NULL) { | |
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301 _pc_descs[0] = NULL; // native method; no PcDescs at all |
| 0 | 302 return; |
| 303 } | |
| 304 NOT_PRODUCT(++nmethod_stats.pc_desc_resets); | |
| 305 // reset the cache by filling it with benign (non-null) values | |
| 306 assert(initial_pc_desc->pc_offset() < 0, "must be sentinel"); | |
| 307 for (int i = 0; i < cache_size; i++) | |
| 308 _pc_descs[i] = initial_pc_desc; | |
| 309 } | |
| 310 | |
| 311 PcDesc* PcDescCache::find_pc_desc(int pc_offset, bool approximate) { | |
| 312 NOT_PRODUCT(++nmethod_stats.pc_desc_queries); | |
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313 NOT_PRODUCT(if (approximate) ++nmethod_stats.pc_desc_approx); |
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314 |
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315 // Note: one might think that caching the most recently |
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316 // read value separately would be a win, but one would be |
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317 // wrong. When many threads are updating it, the cache |
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318 // line it's in would bounce between caches, negating |
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319 // any benefit. |
| 0 | 320 |
| 321 // In order to prevent race conditions do not load cache elements | |
| 322 // repeatedly, but use a local copy: | |
| 323 PcDesc* res; | |
| 324 | |
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325 // Step one: Check the most recently added value. |
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326 res = _pc_descs[0]; |
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327 if (res == NULL) return NULL; // native method; no PcDescs at all |
| 0 | 328 if (match_desc(res, pc_offset, approximate)) { |
| 329 NOT_PRODUCT(++nmethod_stats.pc_desc_repeats); | |
| 330 return res; | |
| 331 } | |
| 332 | |
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333 // Step two: Check the rest of the LRU cache. |
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334 for (int i = 1; i < cache_size; ++i) { |
| 0 | 335 res = _pc_descs[i]; |
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336 if (res->pc_offset() < 0) break; // optimization: skip empty cache |
| 0 | 337 if (match_desc(res, pc_offset, approximate)) { |
| 338 NOT_PRODUCT(++nmethod_stats.pc_desc_hits); | |
| 339 return res; | |
| 340 } | |
| 341 } | |
| 342 | |
| 343 // Report failure. | |
| 344 return NULL; | |
| 345 } | |
| 346 | |
| 347 void PcDescCache::add_pc_desc(PcDesc* pc_desc) { | |
| 348 NOT_PRODUCT(++nmethod_stats.pc_desc_adds); | |
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349 // Update the LRU cache by shifting pc_desc forward. |
| 0 | 350 for (int i = 0; i < cache_size; i++) { |
| 351 PcDesc* next = _pc_descs[i]; | |
| 352 _pc_descs[i] = pc_desc; | |
| 353 pc_desc = next; | |
| 354 } | |
| 355 } | |
| 356 | |
| 357 // adjust pcs_size so that it is a multiple of both oopSize and | |
| 358 // sizeof(PcDesc) (assumes that if sizeof(PcDesc) is not a multiple | |
| 359 // of oopSize, then 2*sizeof(PcDesc) is) | |
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360 static int adjust_pcs_size(int pcs_size) { |
| 0 | 361 int nsize = round_to(pcs_size, oopSize); |
| 362 if ((nsize % sizeof(PcDesc)) != 0) { | |
| 363 nsize = pcs_size + sizeof(PcDesc); | |
| 364 } | |
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365 assert((nsize % oopSize) == 0, "correct alignment"); |
| 0 | 366 return nsize; |
| 367 } | |
| 368 | |
| 369 //----------------------------------------------------------------------------- | |
| 370 | |
| 371 | |
| 372 void nmethod::add_exception_cache_entry(ExceptionCache* new_entry) { | |
| 373 assert(ExceptionCache_lock->owned_by_self(),"Must hold the ExceptionCache_lock"); | |
| 374 assert(new_entry != NULL,"Must be non null"); | |
| 375 assert(new_entry->next() == NULL, "Must be null"); | |
| 376 | |
| 377 if (exception_cache() != NULL) { | |
| 378 new_entry->set_next(exception_cache()); | |
| 379 } | |
| 380 set_exception_cache(new_entry); | |
| 381 } | |
| 382 | |
| 383 void nmethod::remove_from_exception_cache(ExceptionCache* ec) { | |
| 384 ExceptionCache* prev = NULL; | |
| 385 ExceptionCache* curr = exception_cache(); | |
| 386 assert(curr != NULL, "nothing to remove"); | |
| 387 // find the previous and next entry of ec | |
| 388 while (curr != ec) { | |
| 389 prev = curr; | |
| 390 curr = curr->next(); | |
| 391 assert(curr != NULL, "ExceptionCache not found"); | |
| 392 } | |
| 393 // now: curr == ec | |
| 394 ExceptionCache* next = curr->next(); | |
| 395 if (prev == NULL) { | |
| 396 set_exception_cache(next); | |
| 397 } else { | |
| 398 prev->set_next(next); | |
| 399 } | |
| 400 delete curr; | |
| 401 } | |
| 402 | |
| 403 | |
| 404 // public method for accessing the exception cache | |
| 405 // These are the public access methods. | |
| 406 address nmethod::handler_for_exception_and_pc(Handle exception, address pc) { | |
| 407 // We never grab a lock to read the exception cache, so we may | |
| 408 // have false negatives. This is okay, as it can only happen during | |
| 409 // the first few exception lookups for a given nmethod. | |
| 410 ExceptionCache* ec = exception_cache(); | |
| 411 while (ec != NULL) { | |
| 412 address ret_val; | |
| 413 if ((ret_val = ec->match(exception,pc)) != NULL) { | |
| 414 return ret_val; | |
| 415 } | |
| 416 ec = ec->next(); | |
| 417 } | |
| 418 return NULL; | |
| 419 } | |
| 420 | |
| 421 | |
| 422 void nmethod::add_handler_for_exception_and_pc(Handle exception, address pc, address handler) { | |
| 423 // There are potential race conditions during exception cache updates, so we | |
| 424 // must own the ExceptionCache_lock before doing ANY modifications. Because | |
| 605 | 425 // we don't lock during reads, it is possible to have several threads attempt |
| 0 | 426 // to update the cache with the same data. We need to check for already inserted |
| 427 // copies of the current data before adding it. | |
| 428 | |
| 429 MutexLocker ml(ExceptionCache_lock); | |
| 430 ExceptionCache* target_entry = exception_cache_entry_for_exception(exception); | |
| 431 | |
| 432 if (target_entry == NULL || !target_entry->add_address_and_handler(pc,handler)) { | |
| 433 target_entry = new ExceptionCache(exception,pc,handler); | |
| 434 add_exception_cache_entry(target_entry); | |
| 435 } | |
| 436 } | |
| 437 | |
| 438 | |
| 439 //-------------end of code for ExceptionCache-------------- | |
| 440 | |
| 441 | |
| 442 int nmethod::total_size() const { | |
| 443 return | |
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444 consts_size() + |
| 1748 | 445 insts_size() + |
| 0 | 446 stub_size() + |
| 447 scopes_data_size() + | |
| 448 scopes_pcs_size() + | |
| 449 handler_table_size() + | |
| 450 nul_chk_table_size(); | |
| 451 } | |
| 452 | |
| 453 const char* nmethod::compile_kind() const { | |
| 454 if (is_osr_method()) return "osr"; | |
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455 if (method() != NULL && is_native_method()) return "c2n"; |
| 0 | 456 return NULL; |
| 457 } | |
| 458 | |
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459 // Fill in default values for various flag fields |
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460 void nmethod::init_defaults() { |
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461 _state = alive; |
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462 _marked_for_reclamation = 0; |
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463 _has_flushed_dependencies = 0; |
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464 _speculatively_disconnected = 0; |
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465 _has_unsafe_access = 0; |
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466 _has_method_handle_invokes = 0; |
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467 _lazy_critical_native = 0; |
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468 _marked_for_deoptimization = 0; |
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469 _lock_count = 0; |
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470 _stack_traversal_mark = 0; |
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471 _unload_reported = false; // jvmti state |
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472 |
| 1726 | 473 #ifdef ASSERT |
| 474 _oops_are_stale = false; | |
| 475 #endif | |
| 476 | |
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477 _oops_do_mark_link = NULL; |
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478 _jmethod_id = NULL; |
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479 _osr_link = NULL; |
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480 _scavenge_root_link = NULL; |
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481 _scavenge_root_state = 0; |
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482 _saved_nmethod_link = NULL; |
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483 _compiler = NULL; |
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484 |
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485 _graal_compiled_method = NULL; |
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486 |
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487 #ifdef HAVE_DTRACE_H |
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488 _trap_offset = 0; |
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489 #endif // def HAVE_DTRACE_H |
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490 } |
| 0 | 491 |
| 492 | |
| 493 nmethod* nmethod::new_native_nmethod(methodHandle method, | |
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494 int compile_id, |
| 0 | 495 CodeBuffer *code_buffer, |
| 496 int vep_offset, | |
| 497 int frame_complete, | |
| 498 int frame_size, | |
| 499 ByteSize basic_lock_owner_sp_offset, | |
| 500 ByteSize basic_lock_sp_offset, | |
| 501 OopMapSet* oop_maps) { | |
| 502 // create nmethod | |
| 503 nmethod* nm = NULL; | |
| 504 { | |
| 505 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
| 506 int native_nmethod_size = allocation_size(code_buffer, sizeof(nmethod)); | |
| 507 CodeOffsets offsets; | |
| 508 offsets.set_value(CodeOffsets::Verified_Entry, vep_offset); | |
| 509 offsets.set_value(CodeOffsets::Frame_Complete, frame_complete); | |
| 510 nm = new (native_nmethod_size) | |
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511 nmethod(method(), native_nmethod_size, compile_id, &offsets, |
| 0 | 512 code_buffer, frame_size, |
| 513 basic_lock_owner_sp_offset, basic_lock_sp_offset, | |
| 514 oop_maps); | |
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515 if (nm != NULL) nmethod_stats.note_native_nmethod(nm); |
| 0 | 516 if (PrintAssembly && nm != NULL) |
| 517 Disassembler::decode(nm); | |
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518 |
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519 if (PrintMachineCodeToFile) { |
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520 MachineCodePrinter::print(nm); |
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521 } |
| 0 | 522 } |
| 523 // verify nmethod | |
| 524 debug_only(if (nm) nm->verify();) // might block | |
| 525 | |
| 526 if (nm != NULL) { | |
| 527 nm->log_new_nmethod(); | |
| 528 } | |
| 529 | |
| 530 return nm; | |
| 531 } | |
| 532 | |
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533 #ifdef HAVE_DTRACE_H |
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534 nmethod* nmethod::new_dtrace_nmethod(methodHandle method, |
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535 CodeBuffer *code_buffer, |
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536 int vep_offset, |
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537 int trap_offset, |
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538 int frame_complete, |
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539 int frame_size) { |
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540 // create nmethod |
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541 nmethod* nm = NULL; |
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542 { |
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543 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
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544 int nmethod_size = allocation_size(code_buffer, sizeof(nmethod)); |
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545 CodeOffsets offsets; |
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546 offsets.set_value(CodeOffsets::Verified_Entry, vep_offset); |
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547 offsets.set_value(CodeOffsets::Dtrace_trap, trap_offset); |
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548 offsets.set_value(CodeOffsets::Frame_Complete, frame_complete); |
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549 |
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550 nm = new (nmethod_size) nmethod(method(), nmethod_size, &offsets, code_buffer, frame_size); |
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551 |
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552 if (nm != NULL) nmethod_stats.note_nmethod(nm); |
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553 if (PrintAssembly && nm != NULL) |
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554 Disassembler::decode(nm); |
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555 } |
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556 // verify nmethod |
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557 debug_only(if (nm) nm->verify();) // might block |
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558 |
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559 if (nm != NULL) { |
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560 nm->log_new_nmethod(); |
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561 } |
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562 |
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563 return nm; |
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564 } |
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565 |
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566 #endif // def HAVE_DTRACE_H |
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567 |
| 0 | 568 nmethod* nmethod::new_nmethod(methodHandle method, |
| 569 int compile_id, | |
| 570 int entry_bci, | |
| 571 CodeOffsets* offsets, | |
| 572 int orig_pc_offset, | |
| 573 DebugInformationRecorder* debug_info, | |
| 574 Dependencies* dependencies, | |
| 575 CodeBuffer* code_buffer, int frame_size, | |
| 576 OopMapSet* oop_maps, | |
| 577 ExceptionHandlerTable* handler_table, | |
| 578 ImplicitExceptionTable* nul_chk_table, | |
| 579 AbstractCompiler* compiler, | |
| 580 int comp_level | |
| 581 ) | |
| 582 { | |
| 583 assert(debug_info->oop_recorder() == code_buffer->oop_recorder(), "shared OR"); | |
| 584 // create nmethod | |
| 585 nmethod* nm = NULL; | |
| 586 { MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
| 587 int nmethod_size = | |
| 588 allocation_size(code_buffer, sizeof(nmethod)) | |
| 589 + adjust_pcs_size(debug_info->pcs_size()) | |
| 590 + round_to(dependencies->size_in_bytes() , oopSize) | |
| 591 + round_to(handler_table->size_in_bytes(), oopSize) | |
| 592 + round_to(nul_chk_table->size_in_bytes(), oopSize) | |
| 593 + round_to(debug_info->data_size() , oopSize); | |
| 594 nm = new (nmethod_size) | |
| 595 nmethod(method(), nmethod_size, compile_id, entry_bci, offsets, | |
| 596 orig_pc_offset, debug_info, dependencies, code_buffer, frame_size, | |
| 597 oop_maps, | |
| 598 handler_table, | |
| 599 nul_chk_table, | |
| 600 compiler, | |
| 601 comp_level); | |
| 602 if (nm != NULL) { | |
| 603 // To make dependency checking during class loading fast, record | |
| 604 // the nmethod dependencies in the classes it is dependent on. | |
| 605 // This allows the dependency checking code to simply walk the | |
| 606 // class hierarchy above the loaded class, checking only nmethods | |
| 607 // which are dependent on those classes. The slow way is to | |
| 608 // check every nmethod for dependencies which makes it linear in | |
| 609 // the number of methods compiled. For applications with a lot | |
| 610 // classes the slow way is too slow. | |
| 611 for (Dependencies::DepStream deps(nm); deps.next(); ) { | |
| 612 klassOop klass = deps.context_type(); | |
| 613 if (klass == NULL) continue; // ignore things like evol_method | |
| 614 | |
| 615 // record this nmethod as dependent on this klass | |
| 616 instanceKlass::cast(klass)->add_dependent_nmethod(nm); | |
| 617 } | |
| 618 } | |
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619 if (nm != NULL) nmethod_stats.note_nmethod(nm); |
| 0 | 620 if (PrintAssembly && nm != NULL) |
| 621 Disassembler::decode(nm); | |
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622 |
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623 if (PrintMachineCodeToFile) { |
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624 MachineCodePrinter::print(nm); |
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625 } |
| 0 | 626 } |
| 627 | |
| 628 // verify nmethod | |
| 629 debug_only(if (nm) nm->verify();) // might block | |
| 630 | |
| 631 if (nm != NULL) { | |
| 632 nm->log_new_nmethod(); | |
| 633 } | |
| 634 | |
| 635 // done | |
| 636 return nm; | |
| 637 } | |
| 638 | |
| 639 | |
| 640 // For native wrappers | |
| 641 nmethod::nmethod( | |
| 642 methodOop method, | |
| 643 int nmethod_size, | |
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644 int compile_id, |
| 0 | 645 CodeOffsets* offsets, |
| 646 CodeBuffer* code_buffer, | |
| 647 int frame_size, | |
| 648 ByteSize basic_lock_owner_sp_offset, | |
| 649 ByteSize basic_lock_sp_offset, | |
| 650 OopMapSet* oop_maps ) | |
| 651 : CodeBlob("native nmethod", code_buffer, sizeof(nmethod), | |
| 652 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, oop_maps), | |
| 2019 | 653 _native_receiver_sp_offset(basic_lock_owner_sp_offset), |
| 654 _native_basic_lock_sp_offset(basic_lock_sp_offset) | |
| 0 | 655 { |
| 656 { | |
| 657 debug_only(No_Safepoint_Verifier nsv;) | |
| 658 assert_locked_or_safepoint(CodeCache_lock); | |
| 659 | |
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660 init_defaults(); |
| 0 | 661 _method = method; |
| 662 _entry_bci = InvocationEntryBci; | |
| 663 // We have no exception handler or deopt handler make the | |
| 664 // values something that will never match a pc like the nmethod vtable entry | |
| 665 _exception_offset = 0; | |
| 666 _deoptimize_offset = 0; | |
| 1204 | 667 _deoptimize_mh_offset = 0; |
| 0 | 668 _orig_pc_offset = 0; |
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669 |
| 1748 | 670 _consts_offset = data_offset(); |
| 0 | 671 _stub_offset = data_offset(); |
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672 _oops_offset = data_offset(); |
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673 _scopes_data_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
| 0 | 674 _scopes_pcs_offset = _scopes_data_offset; |
| 675 _dependencies_offset = _scopes_pcs_offset; | |
| 676 _handler_table_offset = _dependencies_offset; | |
| 677 _nul_chk_table_offset = _handler_table_offset; | |
| 678 _nmethod_end_offset = _nul_chk_table_offset; | |
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679 _compile_id = compile_id; |
| 0 | 680 _comp_level = CompLevel_none; |
| 1748 | 681 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
| 682 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
| 0 | 683 _osr_entry_point = NULL; |
| 684 _exception_cache = NULL; | |
| 685 _pc_desc_cache.reset_to(NULL); | |
| 686 | |
| 687 code_buffer->copy_oops_to(this); | |
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688 if (ScavengeRootsInCode && detect_scavenge_root_oops()) { |
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689 CodeCache::add_scavenge_root_nmethod(this); |
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690 } |
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691 debug_only(verify_scavenge_root_oops()); |
| 0 | 692 CodeCache::commit(this); |
| 693 } | |
| 694 | |
| 695 if (PrintNativeNMethods || PrintDebugInfo || PrintRelocations || PrintDependencies) { | |
| 696 ttyLocker ttyl; // keep the following output all in one block | |
| 697 // This output goes directly to the tty, not the compiler log. | |
| 698 // To enable tools to match it up with the compilation activity, | |
| 699 // be sure to tag this tty output with the compile ID. | |
| 700 if (xtty != NULL) { | |
| 701 xtty->begin_head("print_native_nmethod"); | |
| 702 xtty->method(_method); | |
| 703 xtty->stamp(); | |
| 704 xtty->end_head(" address='" INTPTR_FORMAT "'", (intptr_t) this); | |
| 705 } | |
| 706 // print the header part first | |
| 707 print(); | |
| 708 // then print the requested information | |
| 709 if (PrintNativeNMethods) { | |
| 710 print_code(); | |
| 711 oop_maps->print(); | |
| 712 } | |
| 713 if (PrintRelocations) { | |
| 714 print_relocations(); | |
| 715 } | |
| 716 if (xtty != NULL) { | |
| 717 xtty->tail("print_native_nmethod"); | |
| 718 } | |
| 719 } | |
| 720 } | |
| 721 | |
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722 // For dtrace wrappers |
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723 #ifdef HAVE_DTRACE_H |
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724 nmethod::nmethod( |
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725 methodOop method, |
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726 int nmethod_size, |
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727 CodeOffsets* offsets, |
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728 CodeBuffer* code_buffer, |
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729 int frame_size) |
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730 : CodeBlob("dtrace nmethod", code_buffer, sizeof(nmethod), |
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731 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, NULL), |
| 2019 | 732 _native_receiver_sp_offset(in_ByteSize(-1)), |
| 733 _native_basic_lock_sp_offset(in_ByteSize(-1)) | |
|
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734 { |
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735 { |
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736 debug_only(No_Safepoint_Verifier nsv;) |
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737 assert_locked_or_safepoint(CodeCache_lock); |
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738 |
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739 init_defaults(); |
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740 _method = method; |
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741 _entry_bci = InvocationEntryBci; |
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742 // We have no exception handler or deopt handler make the |
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743 // values something that will never match a pc like the nmethod vtable entry |
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744 _exception_offset = 0; |
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745 _deoptimize_offset = 0; |
| 1204 | 746 _deoptimize_mh_offset = 0; |
|
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747 _unwind_handler_offset = -1; |
|
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748 _trap_offset = offsets->value(CodeOffsets::Dtrace_trap); |
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749 _orig_pc_offset = 0; |
| 1748 | 750 _consts_offset = data_offset(); |
|
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751 _stub_offset = data_offset(); |
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752 _oops_offset = data_offset(); |
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753 _scopes_data_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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754 _scopes_pcs_offset = _scopes_data_offset; |
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755 _dependencies_offset = _scopes_pcs_offset; |
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756 _handler_table_offset = _dependencies_offset; |
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757 _nul_chk_table_offset = _handler_table_offset; |
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758 _nmethod_end_offset = _nul_chk_table_offset; |
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759 _compile_id = 0; // default |
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760 _comp_level = CompLevel_none; |
| 1748 | 761 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
| 762 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
|
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763 _osr_entry_point = NULL; |
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764 _exception_cache = NULL; |
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765 _pc_desc_cache.reset_to(NULL); |
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766 |
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767 code_buffer->copy_oops_to(this); |
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768 debug_only(verify_scavenge_root_oops()); |
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769 CodeCache::commit(this); |
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770 } |
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771 |
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772 if (PrintNMethods || PrintDebugInfo || PrintRelocations || PrintDependencies) { |
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773 ttyLocker ttyl; // keep the following output all in one block |
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774 // This output goes directly to the tty, not the compiler log. |
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775 // To enable tools to match it up with the compilation activity, |
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776 // be sure to tag this tty output with the compile ID. |
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777 if (xtty != NULL) { |
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778 xtty->begin_head("print_dtrace_nmethod"); |
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779 xtty->method(_method); |
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780 xtty->stamp(); |
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781 xtty->end_head(" address='" INTPTR_FORMAT "'", (intptr_t) this); |
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782 } |
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783 // print the header part first |
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784 print(); |
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785 // then print the requested information |
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786 if (PrintNMethods) { |
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787 print_code(); |
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788 } |
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789 if (PrintRelocations) { |
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790 print_relocations(); |
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791 } |
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792 if (xtty != NULL) { |
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793 xtty->tail("print_dtrace_nmethod"); |
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794 } |
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795 } |
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796 } |
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797 #endif // def HAVE_DTRACE_H |
| 0 | 798 |
| 799 void* nmethod::operator new(size_t size, int nmethod_size) { | |
| 800 // Always leave some room in the CodeCache for I2C/C2I adapters | |
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801 if (CodeCache::largest_free_block() < CodeCacheMinimumFreeSpace) return NULL; |
| 0 | 802 return CodeCache::allocate(nmethod_size); |
| 803 } | |
| 804 | |
| 805 | |
| 806 nmethod::nmethod( | |
| 807 methodOop method, | |
| 808 int nmethod_size, | |
| 809 int compile_id, | |
| 810 int entry_bci, | |
| 811 CodeOffsets* offsets, | |
| 812 int orig_pc_offset, | |
| 813 DebugInformationRecorder* debug_info, | |
| 814 Dependencies* dependencies, | |
| 815 CodeBuffer *code_buffer, | |
| 816 int frame_size, | |
| 817 OopMapSet* oop_maps, | |
| 818 ExceptionHandlerTable* handler_table, | |
| 819 ImplicitExceptionTable* nul_chk_table, | |
| 820 AbstractCompiler* compiler, | |
| 821 int comp_level | |
| 822 ) | |
| 823 : CodeBlob("nmethod", code_buffer, sizeof(nmethod), | |
| 824 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, oop_maps), | |
| 2019 | 825 _native_receiver_sp_offset(in_ByteSize(-1)), |
| 826 _native_basic_lock_sp_offset(in_ByteSize(-1)) | |
| 0 | 827 { |
| 828 assert(debug_info->oop_recorder() == code_buffer->oop_recorder(), "shared OR"); | |
| 829 { | |
| 830 debug_only(No_Safepoint_Verifier nsv;) | |
| 831 assert_locked_or_safepoint(CodeCache_lock); | |
| 832 | |
|
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833 init_defaults(); |
| 0 | 834 _method = method; |
|
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835 _entry_bci = entry_bci; |
| 0 | 836 _compile_id = compile_id; |
| 837 _comp_level = comp_level; | |
| 838 _compiler = compiler; | |
| 839 _orig_pc_offset = orig_pc_offset; | |
| 1748 | 840 |
| 841 // Section offsets | |
|
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842 _consts_offset = content_offset() + code_buffer->total_offset_of(code_buffer->consts()); |
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843 _stub_offset = content_offset() + code_buffer->total_offset_of(code_buffer->stubs()); |
| 0 | 844 |
|
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845 #ifdef GRAAL |
|
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846 // graal produces no (!) stub section |
|
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847 if (offsets->value(CodeOffsets::Exceptions) != -1) { |
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848 _exception_offset = code_offset() + offsets->value(CodeOffsets::Exceptions); |
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849 } else { |
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850 _exception_offset = -1; |
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851 } |
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852 if (offsets->value(CodeOffsets::Deopt) != -1) { |
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853 _deoptimize_offset = code_offset() + offsets->value(CodeOffsets::Deopt); |
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854 } else { |
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855 _deoptimize_offset = -1; |
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856 } |
| 2106 | 857 if (offsets->value(CodeOffsets::DeoptMH) != -1) { |
|
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858 _deoptimize_mh_offset = code_offset() + offsets->value(CodeOffsets::DeoptMH); |
| 1930 | 859 } else { |
| 860 _deoptimize_mh_offset = -1; | |
| 861 } | |
|
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862 #else |
| 0 | 863 // Exception handler and deopt handler are in the stub section |
|
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864 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must be set"); |
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865 assert(offsets->value(CodeOffsets::Deopt ) != -1, "must be set"); |
|
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866 |
| 1930 | 867 _exception_offset = _stub_offset + offsets->value(CodeOffsets::Exceptions); |
| 868 _deoptimize_offset = _stub_offset + offsets->value(CodeOffsets::Deopt); | |
| 2106 | 869 if (offsets->value(CodeOffsets::DeoptMH) != -1) { |
| 1930 | 870 _deoptimize_mh_offset = _stub_offset + offsets->value(CodeOffsets::DeoptMH); |
| 871 } else { | |
| 872 _deoptimize_mh_offset = -1; | |
| 873 } | |
|
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874 #endif |
|
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875 if (offsets->value(CodeOffsets::UnwindHandler) != -1) { |
| 1748 | 876 _unwind_handler_offset = code_offset() + offsets->value(CodeOffsets::UnwindHandler); |
|
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877 } else { |
| 1748 | 878 _unwind_handler_offset = -1; |
|
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879 } |
| 1748 | 880 |
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881 _oops_offset = data_offset(); |
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882 _scopes_data_offset = _oops_offset + round_to(code_buffer->total_oop_size (), oopSize); |
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883 _scopes_pcs_offset = _scopes_data_offset + round_to(debug_info->data_size (), oopSize); |
| 0 | 884 _dependencies_offset = _scopes_pcs_offset + adjust_pcs_size(debug_info->pcs_size()); |
| 885 _handler_table_offset = _dependencies_offset + round_to(dependencies->size_in_bytes (), oopSize); | |
| 886 _nul_chk_table_offset = _handler_table_offset + round_to(handler_table->size_in_bytes(), oopSize); | |
| 887 _nmethod_end_offset = _nul_chk_table_offset + round_to(nul_chk_table->size_in_bytes(), oopSize); | |
| 888 | |
| 1748 | 889 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
| 890 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
| 891 _osr_entry_point = code_begin() + offsets->value(CodeOffsets::OSR_Entry); | |
| 0 | 892 _exception_cache = NULL; |
| 893 _pc_desc_cache.reset_to(scopes_pcs_begin()); | |
| 894 | |
| 895 // Copy contents of ScopeDescRecorder to nmethod | |
| 896 code_buffer->copy_oops_to(this); | |
| 897 debug_info->copy_to(this); | |
| 898 dependencies->copy_to(this); | |
|
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899 if (ScavengeRootsInCode && detect_scavenge_root_oops()) { |
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900 CodeCache::add_scavenge_root_nmethod(this); |
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901 } |
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902 debug_only(verify_scavenge_root_oops()); |
| 0 | 903 |
| 904 CodeCache::commit(this); | |
| 905 | |
| 906 // Copy contents of ExceptionHandlerTable to nmethod | |
| 907 handler_table->copy_to(this); | |
| 908 nul_chk_table->copy_to(this); | |
| 909 | |
| 910 // we use the information of entry points to find out if a method is | |
| 911 // static or non static | |
| 912 assert(compiler->is_c2() || | |
| 913 _method->is_static() == (entry_point() == _verified_entry_point), | |
| 914 " entry points must be same for static methods and vice versa"); | |
| 915 } | |
| 916 | |
|
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917 bool printnmethods = PrintNMethods |
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918 || CompilerOracle::should_print(_method) |
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919 || CompilerOracle::has_option_string(_method, "PrintNMethods"); |
| 0 | 920 if (printnmethods || PrintDebugInfo || PrintRelocations || PrintDependencies || PrintExceptionHandlers) { |
| 921 print_nmethod(printnmethods); | |
| 922 } | |
| 923 } | |
| 924 | |
| 925 | |
| 926 // Print a short set of xml attributes to identify this nmethod. The | |
| 927 // output should be embedded in some other element. | |
| 928 void nmethod::log_identity(xmlStream* log) const { | |
| 929 log->print(" compile_id='%d'", compile_id()); | |
| 930 const char* nm_kind = compile_kind(); | |
| 931 if (nm_kind != NULL) log->print(" compile_kind='%s'", nm_kind); | |
| 932 if (compiler() != NULL) { | |
| 933 log->print(" compiler='%s'", compiler()->name()); | |
| 934 } | |
| 1783 | 935 if (TieredCompilation) { |
| 936 log->print(" level='%d'", comp_level()); | |
| 937 } | |
| 0 | 938 } |
| 939 | |
| 940 | |
| 941 #define LOG_OFFSET(log, name) \ | |
| 942 if ((intptr_t)name##_end() - (intptr_t)name##_begin()) \ | |
| 943 log->print(" " XSTR(name) "_offset='%d'" , \ | |
| 944 (intptr_t)name##_begin() - (intptr_t)this) | |
| 945 | |
| 946 | |
| 947 void nmethod::log_new_nmethod() const { | |
| 948 if (LogCompilation && xtty != NULL) { | |
| 949 ttyLocker ttyl; | |
| 950 HandleMark hm; | |
| 951 xtty->begin_elem("nmethod"); | |
| 952 log_identity(xtty); | |
| 1748 | 953 xtty->print(" entry='" INTPTR_FORMAT "' size='%d'", code_begin(), size()); |
| 0 | 954 xtty->print(" address='" INTPTR_FORMAT "'", (intptr_t) this); |
| 955 | |
| 956 LOG_OFFSET(xtty, relocation); | |
|
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957 LOG_OFFSET(xtty, consts); |
| 1748 | 958 LOG_OFFSET(xtty, insts); |
| 0 | 959 LOG_OFFSET(xtty, stub); |
| 960 LOG_OFFSET(xtty, scopes_data); | |
| 961 LOG_OFFSET(xtty, scopes_pcs); | |
| 962 LOG_OFFSET(xtty, dependencies); | |
| 963 LOG_OFFSET(xtty, handler_table); | |
| 964 LOG_OFFSET(xtty, nul_chk_table); | |
| 965 LOG_OFFSET(xtty, oops); | |
| 966 | |
| 967 xtty->method(method()); | |
| 968 xtty->stamp(); | |
| 969 xtty->end_elem(); | |
| 970 } | |
| 971 } | |
| 972 | |
| 973 #undef LOG_OFFSET | |
| 974 | |
| 975 | |
| 976 // Print out more verbose output usually for a newly created nmethod. | |
|
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977 void nmethod::print_on(outputStream* st, const char* msg) const { |
| 0 | 978 if (st != NULL) { |
| 979 ttyLocker ttyl; | |
|
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980 if (WizardMode) { |
|
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981 CompileTask::print_compilation(st, this, msg, /*short_form:*/ true); |
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982 st->print_cr(" (" INTPTR_FORMAT ")", this); |
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983 } else { |
|
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984 CompileTask::print_compilation(st, this, msg, /*short_form:*/ false); |
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985 } |
| 0 | 986 } |
| 987 } | |
| 988 | |
| 989 | |
| 990 void nmethod::print_nmethod(bool printmethod) { | |
| 991 ttyLocker ttyl; // keep the following output all in one block | |
| 992 if (xtty != NULL) { | |
| 993 xtty->begin_head("print_nmethod"); | |
| 994 xtty->stamp(); | |
| 995 xtty->end_head(); | |
| 996 } | |
| 997 // print the header part first | |
| 998 print(); | |
| 999 // then print the requested information | |
| 1000 if (printmethod) { | |
| 1001 print_code(); | |
| 1002 print_pcs(); | |
|
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1003 if (oop_maps()) { |
|
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1004 oop_maps()->print(); |
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1005 } |
| 0 | 1006 } |
| 1007 if (PrintDebugInfo) { | |
| 1008 print_scopes(); | |
| 1009 } | |
| 1010 if (PrintRelocations) { | |
| 1011 print_relocations(); | |
| 1012 } | |
| 1013 if (PrintDependencies) { | |
| 1014 print_dependencies(); | |
| 1015 } | |
| 1016 if (PrintExceptionHandlers) { | |
| 1017 print_handler_table(); | |
| 1018 print_nul_chk_table(); | |
| 1019 } | |
| 1020 if (xtty != NULL) { | |
| 1021 xtty->tail("print_nmethod"); | |
| 1022 } | |
| 1023 } | |
| 1024 | |
| 1025 | |
|
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1026 // Promote one word from an assembly-time handle to a live embedded oop. |
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1027 inline void nmethod::initialize_immediate_oop(oop* dest, jobject handle) { |
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1028 if (handle == NULL || |
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1029 // As a special case, IC oops are initialized to 1 or -1. |
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1030 handle == (jobject) Universe::non_oop_word()) { |
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1031 (*dest) = (oop) handle; |
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1032 } else { |
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1033 (*dest) = JNIHandles::resolve_non_null(handle); |
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1034 } |
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1035 } |
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1036 |
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1037 |
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1038 void nmethod::copy_oops(GrowableArray<jobject>* array) { |
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1039 //assert(oops_size() == 0, "do this handshake just once, please"); |
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1040 int length = array->length(); |
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1041 assert((address)(oops_begin() + length) <= data_end(), "oops big enough"); |
|
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1042 oop* dest = oops_begin(); |
|
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1043 for (int index = 0 ; index < length; index++) { |
|
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1044 initialize_immediate_oop(&dest[index], array->at(index)); |
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1045 } |
|
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1046 |
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1047 // Now we can fix up all the oops in the code. We need to do this |
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1048 // in the code because the assembler uses jobjects as placeholders. |
|
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1049 // The code and relocations have already been initialized by the |
|
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1050 // CodeBlob constructor, so it is valid even at this early point to |
|
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1051 // iterate over relocations and patch the code. |
|
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1052 fix_oop_relocations(NULL, NULL, /*initialize_immediates=*/ true); |
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1053 } |
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1054 |
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1055 |
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1056 bool nmethod::is_at_poll_return(address pc) { |
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1057 RelocIterator iter(this, pc, pc+1); |
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1058 while (iter.next()) { |
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1059 if (iter.type() == relocInfo::poll_return_type) |
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1060 return true; |
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|
1061 } |
|
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|
1062 return false; |
|
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|
1063 } |
|
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|
1064 |
|
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|
1065 |
|
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|
1066 bool nmethod::is_at_poll_or_poll_return(address pc) { |
|
1a5913bf5e19
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|
1067 RelocIterator iter(this, pc, pc+1); |
|
1a5913bf5e19
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diff
changeset
|
1068 while (iter.next()) { |
|
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
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|
1069 relocInfo::relocType t = iter.type(); |
|
1a5913bf5e19
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twisti
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1070 if (t == relocInfo::poll_return_type || t == relocInfo::poll_type) |
|
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|
1071 return true; |
|
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
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diff
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|
1072 } |
|
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twisti
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|
1073 return false; |
|
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6951083: oops and relocations should part of nmethod not CodeBlob
twisti
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|
1074 } |
|
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twisti
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|
1075 |
|
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diff
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|
1076 |
|
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|
1077 void nmethod::fix_oop_relocations(address begin, address end, bool initialize_immediates) { |
|
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|
1078 // re-patch all oop-bearing instructions, just in case some oops moved |
|
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twisti
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|
1079 RelocIterator iter(this, begin, end); |
|
1a5913bf5e19
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|
1080 while (iter.next()) { |
|
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twisti
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|
1081 if (iter.type() == relocInfo::oop_type) { |
|
1a5913bf5e19
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1082 oop_Relocation* reloc = iter.oop_reloc(); |
|
1a5913bf5e19
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|
1083 if (initialize_immediates && reloc->oop_is_immediate()) { |
|
1a5913bf5e19
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|
1084 oop* dest = reloc->oop_addr(); |
|
1a5913bf5e19
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|
1085 initialize_immediate_oop(dest, (jobject) *dest); |
|
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|
1086 } |
|
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|
1087 // Refresh the oop-related bits of this instruction. |
|
1a5913bf5e19
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|
1088 reloc->fix_oop_relocation(); |
|
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|
1089 } |
|
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|
1090 |
|
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|
1091 // There must not be any interfering patches or breakpoints. |
|
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|
1092 assert(!(iter.type() == relocInfo::breakpoint_type |
|
1a5913bf5e19
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|
1093 && iter.breakpoint_reloc()->active()), |
|
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6951083: oops and relocations should part of nmethod not CodeBlob
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1094 "no active breakpoint"); |
|
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|
1095 } |
|
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|
1096 } |
|
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|
1097 |
|
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|
1098 |
|
2375
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never
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1099 void nmethod::verify_oop_relocations() { |
|
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1100 // Ensure sure that the code matches the current oop values |
|
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1101 RelocIterator iter(this, NULL, NULL); |
|
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1102 while (iter.next()) { |
|
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1103 if (iter.type() == relocInfo::oop_type) { |
|
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1104 oop_Relocation* reloc = iter.oop_reloc(); |
|
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1105 if (!reloc->oop_is_immediate()) { |
|
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1106 reloc->verify_oop_relocation(); |
|
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1107 } |
|
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1108 } |
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1109 } |
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1110 } |
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|
1111 |
|
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|
1112 |
| 0 | 1113 ScopeDesc* nmethod::scope_desc_at(address pc) { |
| 1114 PcDesc* pd = pc_desc_at(pc); | |
| 1115 guarantee(pd != NULL, "scope must be present"); | |
| 1116 return new ScopeDesc(this, pd->scope_decode_offset(), | |
|
3018
5857923e563c
Fixed an issue with frame states in exception dispatch chains (now we are correctly rethrowing the exception immediately at entering the interpreter).
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
2891
diff
changeset
|
1117 pd->obj_decode_offset(), pd->should_reexecute(), pd->rethrow_exception(), |
|
1253
f70b0d9ab095
6910618: C2: Error: assert(d->is_oop(),"JVM_ArrayCopy: dst not an oop")
kvn
parents:
1250
diff
changeset
|
1118 pd->return_oop()); |
| 0 | 1119 } |
| 1120 | |
| 1121 | |
| 1122 void nmethod::clear_inline_caches() { | |
| 1123 assert(SafepointSynchronize::is_at_safepoint(), "cleaning of IC's only allowed at safepoint"); | |
| 1124 if (is_zombie()) { | |
| 1125 return; | |
| 1126 } | |
| 1127 | |
| 1128 RelocIterator iter(this); | |
| 1129 while (iter.next()) { | |
| 1130 iter.reloc()->clear_inline_cache(); | |
| 1131 } | |
| 1132 } | |
| 1133 | |
| 1134 | |
| 1135 void nmethod::cleanup_inline_caches() { | |
| 1136 | |
|
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6950075: nmethod sweeper should operate concurrently
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parents:
1490
diff
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|
1137 assert_locked_or_safepoint(CompiledIC_lock); |
| 0 | 1138 |
| 1139 // If the method is not entrant or zombie then a JMP is plastered over the | |
| 1140 // first few bytes. If an oop in the old code was there, that oop | |
| 1141 // should not get GC'd. Skip the first few bytes of oops on | |
| 1142 // not-entrant methods. | |
| 1143 address low_boundary = verified_entry_point(); | |
| 1144 if (!is_in_use()) { | |
| 1145 low_boundary += NativeJump::instruction_size; | |
| 1146 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
| 1147 // This means that the low_boundary is going to be a little too high. | |
| 1148 // This shouldn't matter, since oops of non-entrant methods are never used. | |
| 1149 // In fact, why are we bothering to look at oops in a non-entrant method?? | |
| 1150 } | |
| 1151 | |
| 1152 // Find all calls in an nmethod, and clear the ones that points to zombie methods | |
| 1153 ResourceMark rm; | |
| 1154 RelocIterator iter(this, low_boundary); | |
| 1155 while(iter.next()) { | |
| 1156 switch(iter.type()) { | |
| 1157 case relocInfo::virtual_call_type: | |
| 1158 case relocInfo::opt_virtual_call_type: { | |
| 1159 CompiledIC *ic = CompiledIC_at(iter.reloc()); | |
| 1160 // Ok, to lookup references to zombies here | |
| 1161 CodeBlob *cb = CodeCache::find_blob_unsafe(ic->ic_destination()); | |
| 1162 if( cb != NULL && cb->is_nmethod() ) { | |
| 1163 nmethod* nm = (nmethod*)cb; | |
| 1164 // Clean inline caches pointing to both zombie and not_entrant methods | |
| 1202 | 1165 if (!nm->is_in_use() || (nm->method()->code() != nm)) ic->set_to_clean(); |
| 0 | 1166 } |
| 1167 break; | |
| 1168 } | |
| 1169 case relocInfo::static_call_type: { | |
| 1170 CompiledStaticCall *csc = compiledStaticCall_at(iter.reloc()); | |
| 1171 CodeBlob *cb = CodeCache::find_blob_unsafe(csc->destination()); | |
| 1172 if( cb != NULL && cb->is_nmethod() ) { | |
| 1173 nmethod* nm = (nmethod*)cb; | |
| 1174 // Clean inline caches pointing to both zombie and not_entrant methods | |
| 1202 | 1175 if (!nm->is_in_use() || (nm->method()->code() != nm)) csc->set_to_clean(); |
| 0 | 1176 } |
| 1177 break; | |
| 1178 } | |
| 1179 } | |
| 1180 } | |
| 1181 } | |
| 1182 | |
|
989
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6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1183 // This is a private interface with the sweeper. |
| 0 | 1184 void nmethod::mark_as_seen_on_stack() { |
| 1185 assert(is_not_entrant(), "must be a non-entrant method"); | |
|
1644
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|
1186 // Set the traversal mark to ensure that the sweeper does 2 |
|
2a47bd84841f
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never
parents:
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diff
changeset
|
1187 // cleaning passes before moving to zombie. |
| 0 | 1188 set_stack_traversal_mark(NMethodSweeper::traversal_count()); |
| 1189 } | |
| 1190 | |
|
2342
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2321
diff
changeset
|
1191 // Tell if a non-entrant method can be converted to a zombie (i.e., |
|
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
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diff
changeset
|
1192 // there are no activations on the stack, not in use by the VM, |
|
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2321
diff
changeset
|
1193 // and not in use by the ServiceThread) |
| 0 | 1194 bool nmethod::can_not_entrant_be_converted() { |
| 1195 assert(is_not_entrant(), "must be a non-entrant method"); | |
| 1196 | |
| 1197 // Since the nmethod sweeper only does partial sweep the sweeper's traversal | |
| 1198 // count can be greater than the stack traversal count before it hits the | |
| 1199 // nmethod for the second time. | |
|
2342
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
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diff
changeset
|
1200 return stack_traversal_mark()+1 < NMethodSweeper::traversal_count() && |
|
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2321
diff
changeset
|
1201 !is_locked_by_vm(); |
| 0 | 1202 } |
| 1203 | |
| 1204 void nmethod::inc_decompile_count() { | |
|
5036
8e6db1a5c537
exit the VM when an endless recompilation is detected
Christian Haeubl <christian.haeubl@oracle.com>
parents:
4970
diff
changeset
|
1205 #ifndef GRAAL |
| 1783 | 1206 if (!is_compiled_by_c2()) return; |
|
5036
8e6db1a5c537
exit the VM when an endless recompilation is detected
Christian Haeubl <christian.haeubl@oracle.com>
parents:
4970
diff
changeset
|
1207 #endif |
| 0 | 1208 // Could be gated by ProfileTraps, but do not bother... |
| 1209 methodOop m = method(); | |
| 1210 if (m == NULL) return; | |
| 1211 methodDataOop mdo = m->method_data(); | |
| 1212 if (mdo == NULL) return; | |
| 1213 // There is a benign race here. See comments in methodDataOop.hpp. | |
| 1214 mdo->inc_decompile_count(); | |
| 1215 } | |
| 1216 | |
| 1217 void nmethod::make_unloaded(BoolObjectClosure* is_alive, oop cause) { | |
| 1218 | |
| 1219 post_compiled_method_unload(); | |
| 1220 | |
| 1221 // Since this nmethod is being unloaded, make sure that dependencies | |
| 1222 // recorded in instanceKlasses get flushed and pass non-NULL closure to | |
| 1223 // indicate that this work is being done during a GC. | |
| 1224 assert(Universe::heap()->is_gc_active(), "should only be called during gc"); | |
| 1225 assert(is_alive != NULL, "Should be non-NULL"); | |
| 1226 // A non-NULL is_alive closure indicates that this is being called during GC. | |
| 1227 flush_dependencies(is_alive); | |
| 1228 | |
| 1229 // Break cycle between nmethod & method | |
| 1230 if (TraceClassUnloading && WizardMode) { | |
| 1231 tty->print_cr("[Class unloading: Making nmethod " INTPTR_FORMAT | |
| 1232 " unloadable], methodOop(" INTPTR_FORMAT | |
| 1233 "), cause(" INTPTR_FORMAT ")", | |
| 1234 this, (address)_method, (address)cause); | |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1235 if (!Universe::heap()->is_gc_active()) |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1236 cause->klass()->print(); |
| 0 | 1237 } |
| 941 | 1238 // Unlink the osr method, so we do not look this up again |
| 1239 if (is_osr_method()) { | |
| 1240 invalidate_osr_method(); | |
| 1241 } | |
| 0 | 1242 // If _method is already NULL the methodOop is about to be unloaded, |
| 1243 // so we don't have to break the cycle. Note that it is possible to | |
| 1244 // have the methodOop live here, in case we unload the nmethod because | |
| 1245 // it is pointing to some oop (other than the methodOop) being unloaded. | |
| 1246 if (_method != NULL) { | |
| 1247 // OSR methods point to the methodOop, but the methodOop does not | |
| 1248 // point back! | |
| 1249 if (_method->code() == this) { | |
| 1250 _method->clear_code(); // Break a cycle | |
| 1251 } | |
| 1252 _method = NULL; // Clear the method of this dead nmethod | |
| 1253 } | |
|
4320
125678ef7587
Fix compiled method unloading.
Andreas Woess <andreas.woess@jku.at>
parents:
4137
diff
changeset
|
1254 |
|
125678ef7587
Fix compiled method unloading.
Andreas Woess <andreas.woess@jku.at>
parents:
4137
diff
changeset
|
1255 #ifdef GRAAL |
|
125678ef7587
Fix compiled method unloading.
Andreas Woess <andreas.woess@jku.at>
parents:
4137
diff
changeset
|
1256 if (_graal_compiled_method != NULL) { |
|
125678ef7587
Fix compiled method unloading.
Andreas Woess <andreas.woess@jku.at>
parents:
4137
diff
changeset
|
1257 HotSpotCompiledMethod::set_nmethod(_graal_compiled_method, 0); |
|
125678ef7587
Fix compiled method unloading.
Andreas Woess <andreas.woess@jku.at>
parents:
4137
diff
changeset
|
1258 _graal_compiled_method = NULL; |
|
125678ef7587
Fix compiled method unloading.
Andreas Woess <andreas.woess@jku.at>
parents:
4137
diff
changeset
|
1259 } |
|
125678ef7587
Fix compiled method unloading.
Andreas Woess <andreas.woess@jku.at>
parents:
4137
diff
changeset
|
1260 #endif |
|
125678ef7587
Fix compiled method unloading.
Andreas Woess <andreas.woess@jku.at>
parents:
4137
diff
changeset
|
1261 |
| 0 | 1262 // Make the class unloaded - i.e., change state and notify sweeper |
|
1538
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1490
diff
changeset
|
1263 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint"); |
| 0 | 1264 if (is_in_use()) { |
| 1265 // Transitioning directly from live to unloaded -- so | |
| 1266 // we need to force a cache clean-up; remember this | |
| 1267 // for later on. | |
| 1268 CodeCache::set_needs_cache_clean(true); | |
| 1269 } | |
|
1644
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never
parents:
1616
diff
changeset
|
1270 _state = unloaded; |
| 0 | 1271 |
|
1109
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1272 // Log the unloading. |
|
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1273 log_state_change(); |
|
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1274 |
| 0 | 1275 // The methodOop is gone at this point |
| 1276 assert(_method == NULL, "Tautology"); | |
| 1277 | |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1278 set_osr_link(NULL); |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1279 //set_scavenge_root_link(NULL); // done by prune_scavenge_root_nmethods |
| 0 | 1280 NMethodSweeper::notify(this); |
| 1281 } | |
| 1282 | |
| 1283 void nmethod::invalidate_osr_method() { | |
| 1284 assert(_entry_bci != InvocationEntryBci, "wrong kind of nmethod"); | |
| 1285 // Remove from list of active nmethods | |
| 1286 if (method() != NULL) | |
| 1287 instanceKlass::cast(method()->method_holder())->remove_osr_nmethod(this); | |
| 1288 // Set entry as invalid | |
| 1289 _entry_bci = InvalidOSREntryBci; | |
| 1290 } | |
| 1291 | |
|
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1292 void nmethod::log_state_change() const { |
| 0 | 1293 if (LogCompilation) { |
| 1294 if (xtty != NULL) { | |
| 1295 ttyLocker ttyl; // keep the following output all in one block | |
|
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1296 if (_state == unloaded) { |
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1297 xtty->begin_elem("make_unloaded thread='" UINTX_FORMAT "'", |
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1298 os::current_thread_id()); |
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1299 } else { |
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1300 xtty->begin_elem("make_not_entrant thread='" UINTX_FORMAT "'%s", |
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1301 os::current_thread_id(), |
|
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1302 (_state == zombie ? " zombie='1'" : "")); |
|
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1303 } |
| 0 | 1304 log_identity(xtty); |
| 1305 xtty->stamp(); | |
| 1306 xtty->end_elem(); | |
| 1307 } | |
| 1308 } | |
|
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1309 if (PrintCompilation && _state != unloaded) { |
|
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1310 print_on(tty, _state == zombie ? "made zombie" : "made not entrant"); |
| 0 | 1311 } |
| 1312 } | |
| 1313 | |
| 1314 // Common functionality for both make_not_entrant and make_zombie | |
| 1141 | 1315 bool nmethod::make_not_entrant_or_zombie(unsigned int state) { |
| 0 | 1316 assert(state == zombie || state == not_entrant, "must be zombie or not_entrant"); |
|
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1317 assert(!is_zombie(), "should not already be a zombie"); |
| 0 | 1318 |
|
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1319 // Make sure neither the nmethod nor the method is flushed in case of a safepoint in code below. |
| 0 | 1320 nmethodLocker nml(this); |
|
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1321 methodHandle the_method(method()); |
| 1726 | 1322 No_Safepoint_Verifier nsv; |
| 0 | 1323 |
| 1324 { | |
|
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1325 // invalidate osr nmethod before acquiring the patching lock since |
|
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1326 // they both acquire leaf locks and we don't want a deadlock. |
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1327 // This logic is equivalent to the logic below for patching the |
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1328 // verified entry point of regular methods. |
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1329 if (is_osr_method()) { |
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1330 // this effectively makes the osr nmethod not entrant |
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1331 invalidate_osr_method(); |
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1332 } |
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1333 |
| 0 | 1334 // Enter critical section. Does not block for safepoint. |
| 1335 MutexLockerEx pl(Patching_lock, Mutex::_no_safepoint_check_flag); | |
|
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1336 |
|
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1337 if (_state == state) { |
|
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1338 // another thread already performed this transition so nothing |
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1339 // to do, but return false to indicate this. |
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1340 return false; |
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1341 } |
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1342 |
|
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1343 #ifdef GRAAL |
|
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1344 if (_graal_compiled_method != NULL) { |
|
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1345 HotSpotCompiledMethod::set_nmethod(_graal_compiled_method, 0); |
|
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1346 _graal_compiled_method = NULL; |
|
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1347 } |
|
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1348 #endif |
|
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1349 |
| 0 | 1350 // The caller can be calling the method statically or through an inline |
| 1351 // cache call. | |
|
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1352 if (!is_osr_method() && !is_not_entrant()) { |
| 0 | 1353 NativeJump::patch_verified_entry(entry_point(), verified_entry_point(), |
| 1354 SharedRuntime::get_handle_wrong_method_stub()); | |
| 1355 } | |
| 1356 | |
|
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1357 if (is_in_use()) { |
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1358 // It's a true state change, so mark the method as decompiled. |
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1359 // Do it only for transition from alive. |
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1360 inc_decompile_count(); |
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1361 } |
|
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1362 |
| 0 | 1363 // Change state |
|
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1364 _state = state; |
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1365 |
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1366 // Log the transition once |
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1367 log_state_change(); |
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1368 |
|
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1369 // Remove nmethod from method. |
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1370 // We need to check if both the _code and _from_compiled_code_entry_point |
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1371 // refer to this nmethod because there is a race in setting these two fields |
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1372 // in methodOop as seen in bugid 4947125. |
|
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1373 // If the vep() points to the zombie nmethod, the memory for the nmethod |
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1374 // could be flushed and the compiler and vtable stubs could still call |
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1375 // through it. |
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1376 if (method() != NULL && (method()->code() == this || |
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1377 method()->from_compiled_entry() == verified_entry_point())) { |
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1378 HandleMark hm; |
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1379 method()->clear_code(); |
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1380 } |
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1381 |
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1382 if (state == not_entrant) { |
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1383 mark_as_seen_on_stack(); |
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1384 } |
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1385 |
| 0 | 1386 } // leave critical region under Patching_lock |
| 1387 | |
|
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1388 // When the nmethod becomes zombie it is no longer alive so the |
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1389 // dependencies must be flushed. nmethods in the not_entrant |
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1390 // state will be flushed later when the transition to zombie |
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1391 // happens or they get unloaded. |
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1392 if (state == zombie) { |
| 1726 | 1393 { |
| 1394 // Flushing dependecies must be done before any possible | |
| 1395 // safepoint can sneak in, otherwise the oops used by the | |
| 1396 // dependency logic could have become stale. | |
| 1397 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
| 1398 flush_dependencies(NULL); | |
| 1399 } | |
|
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1400 |
|
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1401 // zombie only - if a JVMTI agent has enabled the CompiledMethodUnload |
|
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1402 // event and it hasn't already been reported for this nmethod then |
|
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1403 // report it now. The event may have been reported earilier if the GC |
|
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1404 // marked it for unloading). JvmtiDeferredEventQueue support means |
|
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1405 // we no longer go to a safepoint here. |
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1406 post_compiled_method_unload(); |
| 1726 | 1407 |
| 1408 #ifdef ASSERT | |
| 1409 // It's no longer safe to access the oops section since zombie | |
| 1410 // nmethods aren't scanned for GC. | |
| 1411 _oops_are_stale = true; | |
| 1412 #endif | |
|
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1413 } else { |
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1414 assert(state == not_entrant, "other cases may need to be handled differently"); |
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1415 } |
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1416 |
| 0 | 1417 if (TraceCreateZombies) { |
| 1418 tty->print_cr("nmethod <" INTPTR_FORMAT "> code made %s", this, (state == not_entrant) ? "not entrant" : "zombie"); | |
| 1419 } | |
| 1420 | |
| 1421 // Make sweeper aware that there is a zombie method that needs to be removed | |
| 1422 NMethodSweeper::notify(this); | |
| 1423 | |
|
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1424 return true; |
| 0 | 1425 } |
| 1426 | |
| 1427 void nmethod::flush() { | |
| 1428 // Note that there are no valid oops in the nmethod anymore. | |
| 1429 assert(is_zombie() || (is_osr_method() && is_unloaded()), "must be a zombie method"); | |
| 1430 assert(is_marked_for_reclamation() || (is_osr_method() && is_unloaded()), "must be marked for reclamation"); | |
| 1431 | |
| 1432 assert (!is_locked_by_vm(), "locked methods shouldn't be flushed"); | |
|
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1433 assert_locked_or_safepoint(CodeCache_lock); |
| 0 | 1434 |
| 1435 // completely deallocate this method | |
|
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1436 Events::log(JavaThread::current(), "flushing nmethod " INTPTR_FORMAT, this); |
| 0 | 1437 if (PrintMethodFlushing) { |
| 1202 | 1438 tty->print_cr("*flushing nmethod %3d/" INTPTR_FORMAT ". Live blobs:" UINT32_FORMAT "/Free CodeCache:" SIZE_FORMAT "Kb", |
| 1439 _compile_id, this, CodeCache::nof_blobs(), CodeCache::unallocated_capacity()/1024); | |
| 0 | 1440 } |
| 1441 | |
| 1442 // We need to deallocate any ExceptionCache data. | |
| 1443 // Note that we do not need to grab the nmethod lock for this, it | |
| 1444 // better be thread safe if we're disposing of it! | |
| 1445 ExceptionCache* ec = exception_cache(); | |
| 1446 set_exception_cache(NULL); | |
| 1447 while(ec != NULL) { | |
| 1448 ExceptionCache* next = ec->next(); | |
| 1449 delete ec; | |
| 1450 ec = next; | |
| 1451 } | |
| 1452 | |
|
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1453 if (on_scavenge_root_list()) { |
|
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1454 CodeCache::drop_scavenge_root_nmethod(this); |
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1455 } |
|
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1456 |
| 1202 | 1457 if (is_speculatively_disconnected()) { |
| 1458 CodeCache::remove_saved_code(this); | |
| 1459 } | |
| 1460 | |
| 1692 | 1461 #ifdef SHARK |
|
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1462 ((SharkCompiler *) compiler())->free_compiled_method(insts_begin()); |
| 1692 | 1463 #endif // SHARK |
| 1464 | |
| 0 | 1465 ((CodeBlob*)(this))->flush(); |
| 1466 | |
| 1467 CodeCache::free(this); | |
| 1468 } | |
| 1469 | |
| 1470 | |
| 1471 // | |
| 1472 // Notify all classes this nmethod is dependent on that it is no | |
| 1473 // longer dependent. This should only be called in two situations. | |
| 1474 // First, when a nmethod transitions to a zombie all dependents need | |
| 1475 // to be clear. Since zombification happens at a safepoint there's no | |
| 1476 // synchronization issues. The second place is a little more tricky. | |
| 1477 // During phase 1 of mark sweep class unloading may happen and as a | |
| 1478 // result some nmethods may get unloaded. In this case the flushing | |
| 1479 // of dependencies must happen during phase 1 since after GC any | |
| 1480 // dependencies in the unloaded nmethod won't be updated, so | |
| 1481 // traversing the dependency information in unsafe. In that case this | |
| 1482 // function is called with a non-NULL argument and this function only | |
| 1483 // notifies instanceKlasses that are reachable | |
| 1484 | |
| 1485 void nmethod::flush_dependencies(BoolObjectClosure* is_alive) { | |
|
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1486 assert_locked_or_safepoint(CodeCache_lock); |
| 0 | 1487 assert(Universe::heap()->is_gc_active() == (is_alive != NULL), |
| 1488 "is_alive is non-NULL if and only if we are called during GC"); | |
| 1489 if (!has_flushed_dependencies()) { | |
| 1490 set_has_flushed_dependencies(); | |
| 1491 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
| 1492 klassOop klass = deps.context_type(); | |
| 1493 if (klass == NULL) continue; // ignore things like evol_method | |
| 1494 | |
| 1495 // During GC the is_alive closure is non-NULL, and is used to | |
| 1496 // determine liveness of dependees that need to be updated. | |
| 1497 if (is_alive == NULL || is_alive->do_object_b(klass)) { | |
| 1498 instanceKlass::cast(klass)->remove_dependent_nmethod(this); | |
| 1499 } | |
| 1500 } | |
| 1501 } | |
| 1502 } | |
| 1503 | |
| 1504 | |
| 1505 // If this oop is not live, the nmethod can be unloaded. | |
| 1506 bool nmethod::can_unload(BoolObjectClosure* is_alive, | |
| 1507 OopClosure* keep_alive, | |
| 1508 oop* root, bool unloading_occurred) { | |
| 1509 assert(root != NULL, "just checking"); | |
| 1510 oop obj = *root; | |
| 1511 if (obj == NULL || is_alive->do_object_b(obj)) { | |
| 1512 return false; | |
| 1513 } | |
| 1514 if (obj->is_compiledICHolder()) { | |
| 1515 compiledICHolderOop cichk_oop = compiledICHolderOop(obj); | |
| 1516 if (is_alive->do_object_b( | |
| 1517 cichk_oop->holder_method()->method_holder()) && | |
| 1518 is_alive->do_object_b(cichk_oop->holder_klass())) { | |
| 1519 // The oop should be kept alive | |
| 1520 keep_alive->do_oop(root); | |
| 1521 return false; | |
| 1522 } | |
| 1523 } | |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1524 // If ScavengeRootsInCode is true, an nmethod might be unloaded |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1525 // simply because one of its constant oops has gone dead. |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1526 // No actual classes need to be unloaded in order for this to occur. |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1527 assert(unloading_occurred || ScavengeRootsInCode, "Inconsistency in unloading"); |
| 0 | 1528 make_unloaded(is_alive, obj); |
| 1529 return true; | |
| 1530 } | |
| 1531 | |
| 1532 // ------------------------------------------------------------------ | |
| 1533 // post_compiled_method_load_event | |
| 1534 // new method for install_code() path | |
| 1535 // Transfer information from compilation to jvmti | |
| 1536 void nmethod::post_compiled_method_load_event() { | |
| 1537 | |
| 1538 methodOop moop = method(); | |
| 4006 | 1539 #ifndef USDT2 |
| 0 | 1540 HS_DTRACE_PROBE8(hotspot, compiled__method__load, |
| 1541 moop->klass_name()->bytes(), | |
| 1542 moop->klass_name()->utf8_length(), | |
| 1543 moop->name()->bytes(), | |
| 1544 moop->name()->utf8_length(), | |
| 1545 moop->signature()->bytes(), | |
| 1546 moop->signature()->utf8_length(), | |
| 1748 | 1547 insts_begin(), insts_size()); |
| 4006 | 1548 #else /* USDT2 */ |
| 1549 HOTSPOT_COMPILED_METHOD_LOAD( | |
| 1550 (char *) moop->klass_name()->bytes(), | |
| 1551 moop->klass_name()->utf8_length(), | |
| 1552 (char *) moop->name()->bytes(), | |
| 1553 moop->name()->utf8_length(), | |
| 1554 (char *) moop->signature()->bytes(), | |
| 1555 moop->signature()->utf8_length(), | |
| 1556 insts_begin(), insts_size()); | |
| 1557 #endif /* USDT2 */ | |
| 0 | 1558 |
|
1616
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1559 if (JvmtiExport::should_post_compiled_method_load() || |
|
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1560 JvmtiExport::should_post_compiled_method_unload()) { |
|
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1561 get_and_cache_jmethod_id(); |
|
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1562 } |
|
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1563 |
| 0 | 1564 if (JvmtiExport::should_post_compiled_method_load()) { |
|
2195
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1565 // Let the Service thread (which is a real Java thread) post the event |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
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diff
changeset
|
1566 MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag); |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1567 JvmtiDeferredEventQueue::enqueue( |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1568 JvmtiDeferredEvent::compiled_method_load_event(this)); |
| 0 | 1569 } |
| 1570 } | |
| 1571 | |
|
1616
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1572 jmethodID nmethod::get_and_cache_jmethod_id() { |
|
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1573 if (_jmethod_id == NULL) { |
|
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1574 // Cache the jmethod_id since it can no longer be looked up once the |
|
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1575 // method itself has been marked for unloading. |
|
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1576 _jmethod_id = method()->jmethod_id(); |
|
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1577 } |
|
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1578 return _jmethod_id; |
|
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1579 } |
|
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1580 |
| 0 | 1581 void nmethod::post_compiled_method_unload() { |
|
1577
852d0157c696
6956931: assert(SafepointSynchronize::is_at_safepoint()) failed: must be executed at a safepoint
never
parents:
1563
diff
changeset
|
1582 if (unload_reported()) { |
|
852d0157c696
6956931: assert(SafepointSynchronize::is_at_safepoint()) failed: must be executed at a safepoint
never
parents:
1563
diff
changeset
|
1583 // During unloading we transition to unloaded and then to zombie |
|
852d0157c696
6956931: assert(SafepointSynchronize::is_at_safepoint()) failed: must be executed at a safepoint
never
parents:
1563
diff
changeset
|
1584 // and the unloading is reported during the first transition. |
|
852d0157c696
6956931: assert(SafepointSynchronize::is_at_safepoint()) failed: must be executed at a safepoint
never
parents:
1563
diff
changeset
|
1585 return; |
|
852d0157c696
6956931: assert(SafepointSynchronize::is_at_safepoint()) failed: must be executed at a safepoint
never
parents:
1563
diff
changeset
|
1586 } |
|
852d0157c696
6956931: assert(SafepointSynchronize::is_at_safepoint()) failed: must be executed at a safepoint
never
parents:
1563
diff
changeset
|
1587 |
| 0 | 1588 assert(_method != NULL && !is_unloaded(), "just checking"); |
| 1589 DTRACE_METHOD_UNLOAD_PROBE(method()); | |
| 1590 | |
| 1591 // If a JVMTI agent has enabled the CompiledMethodUnload event then | |
|
1616
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1592 // post the event. Sometime later this nmethod will be made a zombie |
|
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1593 // by the sweeper but the methodOop will not be valid at that point. |
|
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1594 // If the _jmethod_id is null then no load event was ever requested |
|
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1595 // so don't bother posting the unload. The main reason for this is |
|
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1596 // that the jmethodID is a weak reference to the methodOop so if |
|
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1597 // it's being unloaded there's no way to look it up since the weak |
|
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1598 // ref will have been cleared. |
|
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1599 if (_jmethod_id != NULL && JvmtiExport::should_post_compiled_method_unload()) { |
| 0 | 1600 assert(!unload_reported(), "already unloaded"); |
|
2195
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1601 JvmtiDeferredEvent event = |
|
2342
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2321
diff
changeset
|
1602 JvmtiDeferredEvent::compiled_method_unload_event(this, |
|
2195
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1603 _jmethod_id, insts_begin()); |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1604 if (SafepointSynchronize::is_at_safepoint()) { |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1605 // Don't want to take the queueing lock. Add it as pending and |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1606 // it will get enqueued later. |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1607 JvmtiDeferredEventQueue::add_pending_event(event); |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1608 } else { |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1609 MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag); |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1610 JvmtiDeferredEventQueue::enqueue(event); |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1611 } |
| 0 | 1612 } |
| 1613 | |
| 1614 // The JVMTI CompiledMethodUnload event can be enabled or disabled at | |
| 1615 // any time. As the nmethod is being unloaded now we mark it has | |
| 1616 // having the unload event reported - this will ensure that we don't | |
| 1617 // attempt to report the event in the unlikely scenario where the | |
| 1618 // event is enabled at the time the nmethod is made a zombie. | |
| 1619 set_unload_reported(); | |
| 1620 } | |
| 1621 | |
| 1622 // This is called at the end of the strong tracing/marking phase of a | |
| 1623 // GC to unload an nmethod if it contains otherwise unreachable | |
| 1624 // oops. | |
| 1625 | |
| 1626 void nmethod::do_unloading(BoolObjectClosure* is_alive, | |
| 1627 OopClosure* keep_alive, bool unloading_occurred) { | |
| 1628 // Make sure the oop's ready to receive visitors | |
| 1629 assert(!is_zombie() && !is_unloaded(), | |
| 1630 "should not call follow on zombie or unloaded nmethod"); | |
| 1631 | |
| 1632 // If the method is not entrant then a JMP is plastered over the | |
| 1633 // first few bytes. If an oop in the old code was there, that oop | |
| 1634 // should not get GC'd. Skip the first few bytes of oops on | |
| 1635 // not-entrant methods. | |
| 1636 address low_boundary = verified_entry_point(); | |
| 1637 if (is_not_entrant()) { | |
| 1638 low_boundary += NativeJump::instruction_size; | |
| 1639 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
| 1640 // (See comment above.) | |
| 1641 } | |
| 1642 | |
| 1643 // The RedefineClasses() API can cause the class unloading invariant | |
| 1644 // to no longer be true. See jvmtiExport.hpp for details. | |
| 1645 // Also, leave a debugging breadcrumb in local flag. | |
| 1646 bool a_class_was_redefined = JvmtiExport::has_redefined_a_class(); | |
| 1647 if (a_class_was_redefined) { | |
| 1648 // This set of the unloading_occurred flag is done before the | |
| 1649 // call to post_compiled_method_unload() so that the unloading | |
| 1650 // of this nmethod is reported. | |
| 1651 unloading_occurred = true; | |
| 1652 } | |
| 1653 | |
| 1654 // Follow methodOop | |
| 1655 if (can_unload(is_alive, keep_alive, (oop*)&_method, unloading_occurred)) { | |
| 1656 return; | |
| 1657 } | |
| 1658 | |
|
3683
345c3bbf9c3c
store RiCompiledMethod in nmethod and:
Lukas Stadler <lukas.stadler@jku.at>
parents:
3464
diff
changeset
|
1659 if (_graal_compiled_method != NULL && can_unload(is_alive, keep_alive, (oop*)&_graal_compiled_method, unloading_occurred)) { |
|
345c3bbf9c3c
store RiCompiledMethod in nmethod and:
Lukas Stadler <lukas.stadler@jku.at>
parents:
3464
diff
changeset
|
1660 return; |
|
345c3bbf9c3c
store RiCompiledMethod in nmethod and:
Lukas Stadler <lukas.stadler@jku.at>
parents:
3464
diff
changeset
|
1661 } |
|
345c3bbf9c3c
store RiCompiledMethod in nmethod and:
Lukas Stadler <lukas.stadler@jku.at>
parents:
3464
diff
changeset
|
1662 |
| 0 | 1663 // Exception cache |
| 1664 ExceptionCache* ec = exception_cache(); | |
| 1665 while (ec != NULL) { | |
| 1666 oop* ex_addr = (oop*)ec->exception_type_addr(); | |
| 1667 oop ex = *ex_addr; | |
| 1668 ExceptionCache* next_ec = ec->next(); | |
| 1669 if (ex != NULL && !is_alive->do_object_b(ex)) { | |
| 1670 assert(!ex->is_compiledICHolder(), "Possible error here"); | |
| 1671 remove_from_exception_cache(ec); | |
| 1672 } | |
| 1673 ec = next_ec; | |
| 1674 } | |
| 1675 | |
| 1676 // If class unloading occurred we first iterate over all inline caches and | |
| 1677 // clear ICs where the cached oop is referring to an unloaded klass or method. | |
| 1678 // The remaining live cached oops will be traversed in the relocInfo::oop_type | |
| 1679 // iteration below. | |
| 1680 if (unloading_occurred) { | |
| 1681 RelocIterator iter(this, low_boundary); | |
| 1682 while(iter.next()) { | |
| 1683 if (iter.type() == relocInfo::virtual_call_type) { | |
| 1684 CompiledIC *ic = CompiledIC_at(iter.reloc()); | |
| 1685 oop ic_oop = ic->cached_oop(); | |
| 1686 if (ic_oop != NULL && !is_alive->do_object_b(ic_oop)) { | |
| 1687 // The only exception is compiledICHolder oops which may | |
| 1688 // yet be marked below. (We check this further below). | |
| 1689 if (ic_oop->is_compiledICHolder()) { | |
| 1690 compiledICHolderOop cichk_oop = compiledICHolderOop(ic_oop); | |
| 1691 if (is_alive->do_object_b( | |
| 1692 cichk_oop->holder_method()->method_holder()) && | |
| 1693 is_alive->do_object_b(cichk_oop->holder_klass())) { | |
| 1694 continue; | |
| 1695 } | |
| 1696 } | |
| 1697 ic->set_to_clean(); | |
|
1489
cff162798819
6888953: some calls to function-like macros are missing semicolons
jcoomes
parents:
1378
diff
changeset
|
1698 assert(ic->cached_oop() == NULL, |
|
cff162798819
6888953: some calls to function-like macros are missing semicolons
jcoomes
parents:
1378
diff
changeset
|
1699 "cached oop in IC should be cleared"); |
| 0 | 1700 } |
| 1701 } | |
| 1702 } | |
| 1703 } | |
| 1704 | |
| 1705 // Compiled code | |
| 1706 RelocIterator iter(this, low_boundary); | |
| 1707 while (iter.next()) { | |
| 1708 if (iter.type() == relocInfo::oop_type) { | |
| 1709 oop_Relocation* r = iter.oop_reloc(); | |
| 1710 // In this loop, we must only traverse those oops directly embedded in | |
| 1711 // the code. Other oops (oop_index>0) are seen as part of scopes_oops. | |
| 1712 assert(1 == (r->oop_is_immediate()) + | |
| 1713 (r->oop_addr() >= oops_begin() && r->oop_addr() < oops_end()), | |
| 1714 "oop must be found in exactly one place"); | |
| 1715 if (r->oop_is_immediate() && r->oop_value() != NULL) { | |
| 1716 if (can_unload(is_alive, keep_alive, r->oop_addr(), unloading_occurred)) { | |
| 1717 return; | |
| 1718 } | |
| 1719 } | |
| 1720 } | |
| 1721 } | |
| 1722 | |
| 1723 | |
| 1724 // Scopes | |
| 1725 for (oop* p = oops_begin(); p < oops_end(); p++) { | |
| 1726 if (*p == Universe::non_oop_word()) continue; // skip non-oops | |
| 1727 if (can_unload(is_alive, keep_alive, p, unloading_occurred)) { | |
| 1728 return; | |
| 1729 } | |
| 1730 } | |
| 1731 | |
| 1732 #ifndef PRODUCT | |
| 1733 // This nmethod was not unloaded; check below that all CompiledICs | |
| 1734 // refer to marked oops. | |
| 1735 { | |
| 1736 RelocIterator iter(this, low_boundary); | |
| 1737 while (iter.next()) { | |
| 1738 if (iter.type() == relocInfo::virtual_call_type) { | |
| 1739 CompiledIC *ic = CompiledIC_at(iter.reloc()); | |
| 1740 oop ic_oop = ic->cached_oop(); | |
| 1741 assert(ic_oop == NULL || is_alive->do_object_b(ic_oop), | |
| 1742 "Found unmarked ic_oop in reachable nmethod"); | |
| 1743 } | |
| 1744 } | |
| 1745 } | |
| 1746 #endif // !PRODUCT | |
| 1747 } | |
| 1748 | |
| 941 | 1749 // This method is called twice during GC -- once while |
| 1750 // tracing the "active" nmethods on thread stacks during | |
| 1751 // the (strong) marking phase, and then again when walking | |
| 1752 // the code cache contents during the weak roots processing | |
| 1753 // phase. The two uses are distinguished by means of the | |
|
994
753cf9794df9
6885169: merge of 4957990 and 6863023 causes conflict on do_nmethods
jrose
parents:
993
diff
changeset
|
1754 // 'do_strong_roots_only' flag, which is true in the first |
| 941 | 1755 // case. We want to walk the weak roots in the nmethod |
| 1756 // only in the second case. The weak roots in the nmethod | |
| 1757 // are the oops in the ExceptionCache and the InlineCache | |
| 1758 // oops. | |
|
994
753cf9794df9
6885169: merge of 4957990 and 6863023 causes conflict on do_nmethods
jrose
parents:
993
diff
changeset
|
1759 void nmethod::oops_do(OopClosure* f, bool do_strong_roots_only) { |
| 0 | 1760 // make sure the oops ready to receive visitors |
| 1761 assert(!is_zombie() && !is_unloaded(), | |
| 1762 "should not call follow on zombie or unloaded nmethod"); | |
| 1763 | |
| 1764 // If the method is not entrant or zombie then a JMP is plastered over the | |
| 1765 // first few bytes. If an oop in the old code was there, that oop | |
| 1766 // should not get GC'd. Skip the first few bytes of oops on | |
| 1767 // not-entrant methods. | |
| 1768 address low_boundary = verified_entry_point(); | |
| 1769 if (is_not_entrant()) { | |
| 1770 low_boundary += NativeJump::instruction_size; | |
| 1771 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
| 1772 // (See comment above.) | |
| 1773 } | |
| 1774 | |
| 1775 // Compiled code | |
| 1776 f->do_oop((oop*) &_method); | |
|
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1777 f->do_oop((oop*) &_graal_compiled_method); |
|
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1778 if (!do_strong_roots_only) { |
| 941 | 1779 // weak roots processing phase -- update ExceptionCache oops |
| 1780 ExceptionCache* ec = exception_cache(); | |
| 1781 while(ec != NULL) { | |
| 1782 f->do_oop((oop*)ec->exception_type_addr()); | |
| 1783 ec = ec->next(); | |
| 1784 } | |
| 1785 } // Else strong roots phase -- skip oops in ExceptionCache | |
| 0 | 1786 |
| 1787 RelocIterator iter(this, low_boundary); | |
| 941 | 1788 |
| 0 | 1789 while (iter.next()) { |
| 1790 if (iter.type() == relocInfo::oop_type ) { | |
| 1791 oop_Relocation* r = iter.oop_reloc(); | |
| 1792 // In this loop, we must only follow those oops directly embedded in | |
| 1793 // the code. Other oops (oop_index>0) are seen as part of scopes_oops. | |
| 941 | 1794 assert(1 == (r->oop_is_immediate()) + |
| 1795 (r->oop_addr() >= oops_begin() && r->oop_addr() < oops_end()), | |
| 1796 "oop must be found in exactly one place"); | |
| 0 | 1797 if (r->oop_is_immediate() && r->oop_value() != NULL) { |
| 1798 f->do_oop(r->oop_addr()); | |
| 1799 } | |
| 1800 } | |
| 1801 } | |
| 1802 | |
| 1803 // Scopes | |
|
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1804 // This includes oop constants not inlined in the code stream. |
| 0 | 1805 for (oop* p = oops_begin(); p < oops_end(); p++) { |
| 1806 if (*p == Universe::non_oop_word()) continue; // skip non-oops | |
| 1807 f->do_oop(p); | |
| 1808 } | |
| 1809 } | |
| 1810 | |
|
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1811 #define NMETHOD_SENTINEL ((nmethod*)badAddress) |
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1812 |
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1813 nmethod* volatile nmethod::_oops_do_mark_nmethods; |
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1814 |
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1815 // An nmethod is "marked" if its _mark_link is set non-null. |
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1816 // Even if it is the end of the linked list, it will have a non-null link value, |
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1817 // as long as it is on the list. |
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1818 // This code must be MP safe, because it is used from parallel GC passes. |
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1819 bool nmethod::test_set_oops_do_mark() { |
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1820 assert(nmethod::oops_do_marking_is_active(), "oops_do_marking_prologue must be called"); |
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1821 nmethod* observed_mark_link = _oops_do_mark_link; |
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1822 if (observed_mark_link == NULL) { |
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1823 // Claim this nmethod for this thread to mark. |
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1824 observed_mark_link = (nmethod*) |
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1825 Atomic::cmpxchg_ptr(NMETHOD_SENTINEL, &_oops_do_mark_link, NULL); |
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1826 if (observed_mark_link == NULL) { |
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1827 |
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1828 // Atomically append this nmethod (now claimed) to the head of the list: |
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1829 nmethod* observed_mark_nmethods = _oops_do_mark_nmethods; |
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1830 for (;;) { |
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1831 nmethod* required_mark_nmethods = observed_mark_nmethods; |
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1832 _oops_do_mark_link = required_mark_nmethods; |
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1833 observed_mark_nmethods = (nmethod*) |
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1834 Atomic::cmpxchg_ptr(this, &_oops_do_mark_nmethods, required_mark_nmethods); |
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1835 if (observed_mark_nmethods == required_mark_nmethods) |
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1836 break; |
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1837 } |
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1838 // Mark was clear when we first saw this guy. |
|
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1839 NOT_PRODUCT(if (TraceScavenge) print_on(tty, "oops_do, mark")); |
|
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1840 return false; |
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1841 } |
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1842 } |
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1843 // On fall through, another racing thread marked this nmethod before we did. |
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1844 return true; |
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1845 } |
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1846 |
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1847 void nmethod::oops_do_marking_prologue() { |
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1848 NOT_PRODUCT(if (TraceScavenge) tty->print_cr("[oops_do_marking_prologue")); |
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1849 assert(_oops_do_mark_nmethods == NULL, "must not call oops_do_marking_prologue twice in a row"); |
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1850 // We use cmpxchg_ptr instead of regular assignment here because the user |
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1851 // may fork a bunch of threads, and we need them all to see the same state. |
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1852 void* observed = Atomic::cmpxchg_ptr(NMETHOD_SENTINEL, &_oops_do_mark_nmethods, NULL); |
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1853 guarantee(observed == NULL, "no races in this sequential code"); |
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1854 } |
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1855 |
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1856 void nmethod::oops_do_marking_epilogue() { |
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1857 assert(_oops_do_mark_nmethods != NULL, "must not call oops_do_marking_epilogue twice in a row"); |
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1858 nmethod* cur = _oops_do_mark_nmethods; |
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1859 while (cur != NMETHOD_SENTINEL) { |
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1860 assert(cur != NULL, "not NULL-terminated"); |
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1861 nmethod* next = cur->_oops_do_mark_link; |
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1862 cur->_oops_do_mark_link = NULL; |
|
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1863 cur->fix_oop_relocations(); |
|
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1864 NOT_PRODUCT(if (TraceScavenge) cur->print_on(tty, "oops_do, unmark")); |
|
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1865 cur = next; |
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1866 } |
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1867 void* required = _oops_do_mark_nmethods; |
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1868 void* observed = Atomic::cmpxchg_ptr(NULL, &_oops_do_mark_nmethods, required); |
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1869 guarantee(observed == required, "no races in this sequential code"); |
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1870 NOT_PRODUCT(if (TraceScavenge) tty->print_cr("oops_do_marking_epilogue]")); |
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1871 } |
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1872 |
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1873 class DetectScavengeRoot: public OopClosure { |
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1874 bool _detected_scavenge_root; |
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1875 public: |
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1876 DetectScavengeRoot() : _detected_scavenge_root(false) |
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1877 { NOT_PRODUCT(_print_nm = NULL); } |
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1878 bool detected_scavenge_root() { return _detected_scavenge_root; } |
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1879 virtual void do_oop(oop* p) { |
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1880 if ((*p) != NULL && (*p)->is_scavengable()) { |
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1881 NOT_PRODUCT(maybe_print(p)); |
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1882 _detected_scavenge_root = true; |
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1883 } |
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1884 } |
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1885 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
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1886 |
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1887 #ifndef PRODUCT |
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1888 nmethod* _print_nm; |
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1889 void maybe_print(oop* p) { |
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1890 if (_print_nm == NULL) return; |
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1891 if (!_detected_scavenge_root) _print_nm->print_on(tty, "new scavenge root"); |
|
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1892 tty->print_cr(""PTR_FORMAT"[offset=%d] detected scavengable oop "PTR_FORMAT" (found at "PTR_FORMAT")", |
|
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1893 _print_nm, (int)((intptr_t)p - (intptr_t)_print_nm), |
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1894 (intptr_t)(*p), (intptr_t)p); |
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1895 (*p)->print(); |
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1896 } |
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1897 #endif //PRODUCT |
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1898 }; |
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1899 |
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1900 bool nmethod::detect_scavenge_root_oops() { |
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1901 DetectScavengeRoot detect_scavenge_root; |
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1902 NOT_PRODUCT(if (TraceScavenge) detect_scavenge_root._print_nm = this); |
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1903 oops_do(&detect_scavenge_root); |
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1904 return detect_scavenge_root.detected_scavenge_root(); |
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1905 } |
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1906 |
| 0 | 1907 // Method that knows how to preserve outgoing arguments at call. This method must be |
| 1908 // called with a frame corresponding to a Java invoke | |
| 1909 void nmethod::preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { | |
| 1692 | 1910 #ifndef SHARK |
| 0 | 1911 if (!method()->is_native()) { |
| 1912 SimpleScopeDesc ssd(this, fr.pc()); | |
| 2142 | 1913 Bytecode_invoke call(ssd.method(), ssd.bci()); |
|
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1914 // compiled invokedynamic call sites have an implicit receiver at |
|
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1915 // resolution time, so make sure it gets GC'ed. |
|
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1916 bool has_receiver = !call.is_invokestatic(); |
|
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1917 Symbol* signature = call.signature(); |
|
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1918 fr.oops_compiled_arguments_do(signature, has_receiver, reg_map, f); |
| 0 | 1919 } |
| 1692 | 1920 #endif // !SHARK |
| 0 | 1921 } |
| 1922 | |
| 1923 | |
| 1924 oop nmethod::embeddedOop_at(u_char* p) { | |
|
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1925 RelocIterator iter(this, p, p + 1); |
| 0 | 1926 while (iter.next()) |
| 1927 if (iter.type() == relocInfo::oop_type) { | |
| 1928 return iter.oop_reloc()->oop_value(); | |
| 1929 } | |
| 1930 return NULL; | |
| 1931 } | |
| 1932 | |
| 1933 | |
| 1934 inline bool includes(void* p, void* from, void* to) { | |
| 1935 return from <= p && p < to; | |
| 1936 } | |
| 1937 | |
| 1938 | |
| 1939 void nmethod::copy_scopes_pcs(PcDesc* pcs, int count) { | |
| 1940 assert(count >= 2, "must be sentinel values, at least"); | |
| 1941 | |
| 1942 #ifdef ASSERT | |
| 1943 // must be sorted and unique; we do a binary search in find_pc_desc() | |
| 1944 int prev_offset = pcs[0].pc_offset(); | |
| 1945 assert(prev_offset == PcDesc::lower_offset_limit, | |
| 1946 "must start with a sentinel"); | |
| 1947 for (int i = 1; i < count; i++) { | |
| 1948 int this_offset = pcs[i].pc_offset(); | |
| 1949 assert(this_offset > prev_offset, "offsets must be sorted"); | |
| 1950 prev_offset = this_offset; | |
| 1951 } | |
| 1952 assert(prev_offset == PcDesc::upper_offset_limit, | |
| 1953 "must end with a sentinel"); | |
| 1954 #endif //ASSERT | |
| 1955 | |
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1956 // Search for MethodHandle invokes and tag the nmethod. |
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1957 for (int i = 0; i < count; i++) { |
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1958 if (pcs[i].is_method_handle_invoke()) { |
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1959 set_has_method_handle_invokes(true); |
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1960 break; |
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1961 } |
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1962 } |
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1963 assert(has_method_handle_invokes() == (_deoptimize_mh_offset != -1), "must have deopt mh handler"); |
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1964 |
| 0 | 1965 int size = count * sizeof(PcDesc); |
| 1966 assert(scopes_pcs_size() >= size, "oob"); | |
| 1967 memcpy(scopes_pcs_begin(), pcs, size); | |
| 1968 | |
| 1969 // Adjust the final sentinel downward. | |
| 1970 PcDesc* last_pc = &scopes_pcs_begin()[count-1]; | |
| 1971 assert(last_pc->pc_offset() == PcDesc::upper_offset_limit, "sanity"); | |
| 1748 | 1972 last_pc->set_pc_offset(content_size() + 1); |
| 0 | 1973 for (; last_pc + 1 < scopes_pcs_end(); last_pc += 1) { |
| 1974 // Fill any rounding gaps with copies of the last record. | |
| 1975 last_pc[1] = last_pc[0]; | |
| 1976 } | |
| 1977 // The following assert could fail if sizeof(PcDesc) is not | |
| 1978 // an integral multiple of oopSize (the rounding term). | |
| 1979 // If it fails, change the logic to always allocate a multiple | |
| 1980 // of sizeof(PcDesc), and fill unused words with copies of *last_pc. | |
| 1981 assert(last_pc + 1 == scopes_pcs_end(), "must match exactly"); | |
| 1982 } | |
| 1983 | |
| 1984 void nmethod::copy_scopes_data(u_char* buffer, int size) { | |
| 1985 assert(scopes_data_size() >= size, "oob"); | |
| 1986 memcpy(scopes_data_begin(), buffer, size); | |
| 1987 } | |
| 1988 | |
| 1989 | |
| 1990 #ifdef ASSERT | |
| 1991 static PcDesc* linear_search(nmethod* nm, int pc_offset, bool approximate) { | |
| 1992 PcDesc* lower = nm->scopes_pcs_begin(); | |
| 1993 PcDesc* upper = nm->scopes_pcs_end(); | |
| 1994 lower += 1; // exclude initial sentinel | |
| 1995 PcDesc* res = NULL; | |
| 1996 for (PcDesc* p = lower; p < upper; p++) { | |
| 1997 NOT_PRODUCT(--nmethod_stats.pc_desc_tests); // don't count this call to match_desc | |
| 1998 if (match_desc(p, pc_offset, approximate)) { | |
| 1999 if (res == NULL) | |
| 2000 res = p; | |
| 2001 else | |
| 2002 res = (PcDesc*) badAddress; | |
| 2003 } | |
| 2004 } | |
| 2005 return res; | |
| 2006 } | |
| 2007 #endif | |
| 2008 | |
| 2009 | |
| 2010 // Finds a PcDesc with real-pc equal to "pc" | |
| 2011 PcDesc* nmethod::find_pc_desc_internal(address pc, bool approximate) { | |
| 1748 | 2012 address base_address = code_begin(); |
| 0 | 2013 if ((pc < base_address) || |
| 2014 (pc - base_address) >= (ptrdiff_t) PcDesc::upper_offset_limit) { | |
| 2015 return NULL; // PC is wildly out of range | |
| 2016 } | |
| 2017 int pc_offset = (int) (pc - base_address); | |
| 2018 | |
| 2019 // Check the PcDesc cache if it contains the desired PcDesc | |
| 2020 // (This as an almost 100% hit rate.) | |
| 2021 PcDesc* res = _pc_desc_cache.find_pc_desc(pc_offset, approximate); | |
| 2022 if (res != NULL) { | |
| 2023 assert(res == linear_search(this, pc_offset, approximate), "cache ok"); | |
| 2024 return res; | |
| 2025 } | |
| 2026 | |
| 2027 // Fallback algorithm: quasi-linear search for the PcDesc | |
| 2028 // Find the last pc_offset less than the given offset. | |
| 2029 // The successor must be the required match, if there is a match at all. | |
| 2030 // (Use a fixed radix to avoid expensive affine pointer arithmetic.) | |
| 2031 PcDesc* lower = scopes_pcs_begin(); | |
| 2032 PcDesc* upper = scopes_pcs_end(); | |
| 2033 upper -= 1; // exclude final sentinel | |
| 2034 if (lower >= upper) return NULL; // native method; no PcDescs at all | |
| 2035 | |
| 2036 #define assert_LU_OK \ | |
| 2037 /* invariant on lower..upper during the following search: */ \ | |
| 2038 assert(lower->pc_offset() < pc_offset, "sanity"); \ | |
| 2039 assert(upper->pc_offset() >= pc_offset, "sanity") | |
| 2040 assert_LU_OK; | |
| 2041 | |
| 2042 // Use the last successful return as a split point. | |
| 2043 PcDesc* mid = _pc_desc_cache.last_pc_desc(); | |
| 2044 NOT_PRODUCT(++nmethod_stats.pc_desc_searches); | |
| 2045 if (mid->pc_offset() < pc_offset) { | |
| 2046 lower = mid; | |
| 2047 } else { | |
| 2048 upper = mid; | |
| 2049 } | |
| 2050 | |
| 2051 // Take giant steps at first (4096, then 256, then 16, then 1) | |
| 2052 const int LOG2_RADIX = 4 /*smaller steps in debug mode:*/ debug_only(-1); | |
| 2053 const int RADIX = (1 << LOG2_RADIX); | |
| 2054 for (int step = (1 << (LOG2_RADIX*3)); step > 1; step >>= LOG2_RADIX) { | |
| 2055 while ((mid = lower + step) < upper) { | |
| 2056 assert_LU_OK; | |
| 2057 NOT_PRODUCT(++nmethod_stats.pc_desc_searches); | |
| 2058 if (mid->pc_offset() < pc_offset) { | |
| 2059 lower = mid; | |
| 2060 } else { | |
| 2061 upper = mid; | |
| 2062 break; | |
| 2063 } | |
| 2064 } | |
| 2065 assert_LU_OK; | |
| 2066 } | |
| 2067 | |
| 2068 // Sneak up on the value with a linear search of length ~16. | |
| 2069 while (true) { | |
| 2070 assert_LU_OK; | |
| 2071 mid = lower + 1; | |
| 2072 NOT_PRODUCT(++nmethod_stats.pc_desc_searches); | |
| 2073 if (mid->pc_offset() < pc_offset) { | |
| 2074 lower = mid; | |
| 2075 } else { | |
| 2076 upper = mid; | |
| 2077 break; | |
| 2078 } | |
| 2079 } | |
| 2080 #undef assert_LU_OK | |
| 2081 | |
| 2082 if (match_desc(upper, pc_offset, approximate)) { | |
| 2083 assert(upper == linear_search(this, pc_offset, approximate), "search ok"); | |
| 2084 _pc_desc_cache.add_pc_desc(upper); | |
| 2085 return upper; | |
| 2086 } else { | |
| 2087 assert(NULL == linear_search(this, pc_offset, approximate), "search ok"); | |
| 2088 return NULL; | |
| 2089 } | |
| 2090 } | |
| 2091 | |
| 2092 | |
| 2093 bool nmethod::check_all_dependencies() { | |
| 2094 bool found_check = false; | |
| 2095 // wholesale check of all dependencies | |
| 2096 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
| 2097 if (deps.check_dependency() != NULL) { | |
| 2098 found_check = true; | |
| 2099 NOT_DEBUG(break); | |
| 2100 } | |
| 2101 } | |
| 2102 return found_check; // tell caller if we found anything | |
| 2103 } | |
| 2104 | |
| 2105 bool nmethod::check_dependency_on(DepChange& changes) { | |
| 2106 // What has happened: | |
| 2107 // 1) a new class dependee has been added | |
| 2108 // 2) dependee and all its super classes have been marked | |
| 2109 bool found_check = false; // set true if we are upset | |
| 2110 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
| 2111 // Evaluate only relevant dependencies. | |
| 2112 if (deps.spot_check_dependency_at(changes) != NULL) { | |
| 2113 found_check = true; | |
| 2114 NOT_DEBUG(break); | |
| 2115 } | |
| 2116 } | |
| 2117 return found_check; | |
| 2118 } | |
| 2119 | |
| 2120 bool nmethod::is_evol_dependent_on(klassOop dependee) { | |
| 2121 instanceKlass *dependee_ik = instanceKlass::cast(dependee); | |
| 2122 objArrayOop dependee_methods = dependee_ik->methods(); | |
| 2123 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
| 2124 if (deps.type() == Dependencies::evol_method) { | |
| 2125 methodOop method = deps.method_argument(0); | |
| 2126 for (int j = 0; j < dependee_methods->length(); j++) { | |
| 2127 if ((methodOop) dependee_methods->obj_at(j) == method) { | |
| 2128 // RC_TRACE macro has an embedded ResourceMark | |
| 2129 RC_TRACE(0x01000000, | |
| 2130 ("Found evol dependency of nmethod %s.%s(%s) compile_id=%d on method %s.%s(%s)", | |
| 2131 _method->method_holder()->klass_part()->external_name(), | |
| 2132 _method->name()->as_C_string(), | |
| 2133 _method->signature()->as_C_string(), compile_id(), | |
| 2134 method->method_holder()->klass_part()->external_name(), | |
| 2135 method->name()->as_C_string(), | |
| 2136 method->signature()->as_C_string())); | |
| 2137 if (TraceDependencies || LogCompilation) | |
| 2138 deps.log_dependency(dependee); | |
| 2139 return true; | |
| 2140 } | |
| 2141 } | |
| 2142 } | |
| 2143 } | |
| 2144 return false; | |
| 2145 } | |
| 2146 | |
| 2147 // Called from mark_for_deoptimization, when dependee is invalidated. | |
| 2148 bool nmethod::is_dependent_on_method(methodOop dependee) { | |
| 2149 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
| 2150 if (deps.type() != Dependencies::evol_method) | |
| 2151 continue; | |
| 2152 methodOop method = deps.method_argument(0); | |
| 2153 if (method == dependee) return true; | |
| 2154 } | |
| 2155 return false; | |
| 2156 } | |
| 2157 | |
| 2158 | |
| 2159 bool nmethod::is_patchable_at(address instr_addr) { | |
| 1748 | 2160 assert(insts_contains(instr_addr), "wrong nmethod used"); |
| 0 | 2161 if (is_zombie()) { |
| 2162 // a zombie may never be patched | |
| 2163 return false; | |
| 2164 } | |
| 2165 return true; | |
| 2166 } | |
| 2167 | |
| 2168 | |
| 2169 address nmethod::continuation_for_implicit_exception(address pc) { | |
| 2170 // Exception happened outside inline-cache check code => we are inside | |
| 2171 // an active nmethod => use cpc to determine a return address | |
| 1748 | 2172 int exception_offset = pc - code_begin(); |
| 0 | 2173 int cont_offset = ImplicitExceptionTable(this).at( exception_offset ); |
| 2174 #ifdef ASSERT | |
| 2175 if (cont_offset == 0) { | |
| 2176 Thread* thread = ThreadLocalStorage::get_thread_slow(); | |
| 2177 ResetNoHandleMark rnm; // Might be called from LEAF/QUICK ENTRY | |
| 2178 HandleMark hm(thread); | |
| 2179 ResourceMark rm(thread); | |
| 2180 CodeBlob* cb = CodeCache::find_blob(pc); | |
| 2181 assert(cb != NULL && cb == this, ""); | |
| 2182 tty->print_cr("implicit exception happened at " INTPTR_FORMAT, pc); | |
| 2183 print(); | |
| 2184 method()->print_codes(); | |
| 2185 print_code(); | |
| 2186 print_pcs(); | |
| 2187 } | |
| 2188 #endif | |
| 1250 | 2189 if (cont_offset == 0) { |
| 2190 // Let the normal error handling report the exception | |
| 2191 return NULL; | |
| 2192 } | |
| 1748 | 2193 return code_begin() + cont_offset; |
| 0 | 2194 } |
| 2195 | |
| 2196 | |
| 2197 | |
| 2198 void nmethod_init() { | |
| 2199 // make sure you didn't forget to adjust the filler fields | |
| 2200 assert(sizeof(nmethod) % oopSize == 0, "nmethod size must be multiple of a word"); | |
| 2201 } | |
| 2202 | |
| 2203 | |
| 2204 //------------------------------------------------------------------------------------------- | |
| 2205 | |
| 2206 | |
| 2207 // QQQ might we make this work from a frame?? | |
| 2208 nmethodLocker::nmethodLocker(address pc) { | |
| 2209 CodeBlob* cb = CodeCache::find_blob(pc); | |
| 2210 guarantee(cb != NULL && cb->is_nmethod(), "bad pc for a nmethod found"); | |
| 2211 _nm = (nmethod*)cb; | |
| 2212 lock_nmethod(_nm); | |
| 2213 } | |
| 2214 | |
|
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2215 // Only JvmtiDeferredEvent::compiled_method_unload_event() |
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2216 // should pass zombie_ok == true. |
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2217 void nmethodLocker::lock_nmethod(nmethod* nm, bool zombie_ok) { |
| 0 | 2218 if (nm == NULL) return; |
| 2219 Atomic::inc(&nm->_lock_count); | |
|
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2220 guarantee(zombie_ok || !nm->is_zombie(), "cannot lock a zombie method"); |
| 0 | 2221 } |
| 2222 | |
| 2223 void nmethodLocker::unlock_nmethod(nmethod* nm) { | |
| 2224 if (nm == NULL) return; | |
| 2225 Atomic::dec(&nm->_lock_count); | |
| 2226 guarantee(nm->_lock_count >= 0, "unmatched nmethod lock/unlock"); | |
| 2227 } | |
| 2228 | |
| 1204 | 2229 |
| 2230 // ----------------------------------------------------------------------------- | |
| 2231 // nmethod::get_deopt_original_pc | |
| 2232 // | |
| 2233 // Return the original PC for the given PC if: | |
| 2234 // (a) the given PC belongs to a nmethod and | |
| 2235 // (b) it is a deopt PC | |
| 2236 address nmethod::get_deopt_original_pc(const frame* fr) { | |
| 2237 if (fr->cb() == NULL) return NULL; | |
| 2238 | |
| 2239 nmethod* nm = fr->cb()->as_nmethod_or_null(); | |
| 2240 if (nm != NULL && nm->is_deopt_pc(fr->pc())) | |
| 2241 return nm->get_original_pc(fr); | |
| 2242 | |
| 2243 return NULL; | |
| 0 | 2244 } |
| 2245 | |
| 2246 | |
| 2247 // ----------------------------------------------------------------------------- | |
|
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2248 // MethodHandle |
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2249 |
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2250 bool nmethod::is_method_handle_return(address return_pc) { |
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2251 if (!has_method_handle_invokes()) return false; |
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2252 PcDesc* pd = pc_desc_at(return_pc); |
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2253 if (pd == NULL) |
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2254 return false; |
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2255 return pd->is_method_handle_invoke(); |
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2256 } |
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2257 |
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2258 |
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2259 // ----------------------------------------------------------------------------- |
| 0 | 2260 // Verification |
| 2261 | |
|
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2262 class VerifyOopsClosure: public OopClosure { |
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2263 nmethod* _nm; |
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2264 bool _ok; |
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2265 public: |
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2266 VerifyOopsClosure(nmethod* nm) : _nm(nm), _ok(true) { } |
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2267 bool ok() { return _ok; } |
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2268 virtual void do_oop(oop* p) { |
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2269 if ((*p) == NULL || (*p)->is_oop()) return; |
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2270 if (_ok) { |
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2271 _nm->print_nmethod(true); |
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2272 _ok = false; |
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2273 } |
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2274 tty->print_cr("*** non-oop "PTR_FORMAT" found at "PTR_FORMAT" (offset %d)", |
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2275 (intptr_t)(*p), (intptr_t)p, (int)((intptr_t)p - (intptr_t)_nm)); |
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2276 } |
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2277 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
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2278 }; |
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2279 |
| 0 | 2280 void nmethod::verify() { |
| 2281 | |
| 2282 // Hmm. OSR methods can be deopted but not marked as zombie or not_entrant | |
| 2283 // seems odd. | |
| 2284 | |
| 2285 if( is_zombie() || is_not_entrant() ) | |
| 2286 return; | |
| 2287 | |
| 2288 // Make sure all the entry points are correctly aligned for patching. | |
| 2289 NativeJump::check_verified_entry_alignment(entry_point(), verified_entry_point()); | |
| 2290 | |
| 2291 assert(method()->is_oop(), "must be valid"); | |
| 2292 | |
| 2293 ResourceMark rm; | |
| 2294 | |
| 2295 if (!CodeCache::contains(this)) { | |
|
1490
f03d0a26bf83
6888954: argument formatting for assert() and friends
jcoomes
parents:
1489
diff
changeset
|
2296 fatal(err_msg("nmethod at " INTPTR_FORMAT " not in zone", this)); |
| 0 | 2297 } |
| 2298 | |
| 2299 if(is_native_method() ) | |
| 2300 return; | |
| 2301 | |
| 2302 nmethod* nm = CodeCache::find_nmethod(verified_entry_point()); | |
| 2303 if (nm != this) { | |
|
1490
f03d0a26bf83
6888954: argument formatting for assert() and friends
jcoomes
parents:
1489
diff
changeset
|
2304 fatal(err_msg("findNMethod did not find this nmethod (" INTPTR_FORMAT ")", |
|
f03d0a26bf83
6888954: argument formatting for assert() and friends
jcoomes
parents:
1489
diff
changeset
|
2305 this)); |
| 0 | 2306 } |
| 2307 | |
| 2308 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
| 2309 if (! p->verify(this)) { | |
| 2310 tty->print_cr("\t\tin nmethod at " INTPTR_FORMAT " (pcs)", this); | |
| 2311 } | |
| 2312 } | |
| 2313 | |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2314 VerifyOopsClosure voc(this); |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2315 oops_do(&voc); |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2316 assert(voc.ok(), "embedded oops must be OK"); |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2317 verify_scavenge_root_oops(); |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
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931
diff
changeset
|
2318 |
| 0 | 2319 verify_scopes(); |
| 2320 } | |
| 2321 | |
| 2322 | |
| 2323 void nmethod::verify_interrupt_point(address call_site) { | |
| 2324 // This code does not work in release mode since | |
| 2325 // owns_lock only is available in debug mode. | |
| 2326 CompiledIC* ic = NULL; | |
| 2327 Thread *cur = Thread::current(); | |
| 2328 if (CompiledIC_lock->owner() == cur || | |
| 2329 ((cur->is_VM_thread() || cur->is_ConcurrentGC_thread()) && | |
| 2330 SafepointSynchronize::is_at_safepoint())) { | |
| 2331 ic = CompiledIC_at(call_site); | |
| 2332 CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops()); | |
| 2333 } else { | |
| 2334 MutexLocker ml_verify (CompiledIC_lock); | |
| 2335 ic = CompiledIC_at(call_site); | |
| 2336 } | |
| 2337 PcDesc* pd = pc_desc_at(ic->end_of_call()); | |
| 2338 assert(pd != NULL, "PcDesc must exist"); | |
| 2339 for (ScopeDesc* sd = new ScopeDesc(this, pd->scope_decode_offset(), | |
|
3018
5857923e563c
Fixed an issue with frame states in exception dispatch chains (now we are correctly rethrowing the exception immediately at entering the interpreter).
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
2891
diff
changeset
|
2340 pd->obj_decode_offset(), pd->should_reexecute(), pd->rethrow_exception(), |
|
1253
f70b0d9ab095
6910618: C2: Error: assert(d->is_oop(),"JVM_ArrayCopy: dst not an oop")
kvn
parents:
1250
diff
changeset
|
2341 pd->return_oop()); |
| 0 | 2342 !sd->is_top(); sd = sd->sender()) { |
| 2343 sd->verify(); | |
| 2344 } | |
| 2345 } | |
| 2346 | |
| 2347 void nmethod::verify_scopes() { | |
| 2348 if( !method() ) return; // Runtime stubs have no scope | |
| 2349 if (method()->is_native()) return; // Ignore stub methods. | |
| 2350 // iterate through all interrupt point | |
| 2351 // and verify the debug information is valid. | |
| 2352 RelocIterator iter((nmethod*)this); | |
| 2353 while (iter.next()) { | |
| 2354 address stub = NULL; | |
| 2355 switch (iter.type()) { | |
| 2356 case relocInfo::virtual_call_type: | |
| 2357 verify_interrupt_point(iter.addr()); | |
| 2358 break; | |
| 2359 case relocInfo::opt_virtual_call_type: | |
| 2360 stub = iter.opt_virtual_call_reloc()->static_stub(); | |
| 2361 verify_interrupt_point(iter.addr()); | |
| 2362 break; | |
| 2363 case relocInfo::static_call_type: | |
| 2364 stub = iter.static_call_reloc()->static_stub(); | |
| 2365 //verify_interrupt_point(iter.addr()); | |
| 2366 break; | |
| 2367 case relocInfo::runtime_call_type: | |
| 2368 address destination = iter.reloc()->value(); | |
| 2369 // Right now there is no way to find out which entries support | |
| 2370 // an interrupt point. It would be nice if we had this | |
| 2371 // information in a table. | |
| 2372 break; | |
| 2373 } | |
|
4559
723df37192d6
Make it possible again to build a real client libjvm, drop the UseGraal flag.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
4320
diff
changeset
|
2374 #ifndef GRAAL |
| 0 | 2375 assert(stub == NULL || stub_contains(stub), "static call stub outside stub section"); |
|
4559
723df37192d6
Make it possible again to build a real client libjvm, drop the UseGraal flag.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
4320
diff
changeset
|
2376 #endif |
| 0 | 2377 } |
| 2378 } | |
| 2379 | |
| 2380 | |
| 2381 // ----------------------------------------------------------------------------- | |
| 2382 // Non-product code | |
| 2383 #ifndef PRODUCT | |
| 2384 | |
|
989
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6863023: need non-perm oops in code cache for JSR 292
jrose
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931
diff
changeset
|
2385 class DebugScavengeRoot: public OopClosure { |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2386 nmethod* _nm; |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2387 bool _ok; |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2388 public: |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2389 DebugScavengeRoot(nmethod* nm) : _nm(nm), _ok(true) { } |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2390 bool ok() { return _ok; } |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2391 virtual void do_oop(oop* p) { |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2392 if ((*p) == NULL || !(*p)->is_scavengable()) return; |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2393 if (_ok) { |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2394 _nm->print_nmethod(true); |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2395 _ok = false; |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2396 } |
|
3377
2aa9ddbb9e60
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
2405
diff
changeset
|
2397 tty->print_cr("*** scavengable oop "PTR_FORMAT" found at "PTR_FORMAT" (offset %d)", |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2398 (intptr_t)(*p), (intptr_t)p, (int)((intptr_t)p - (intptr_t)_nm)); |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2399 (*p)->print(); |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2400 } |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2401 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2402 }; |
| 0 | 2403 |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2404 void nmethod::verify_scavenge_root_oops() { |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2405 if (!on_scavenge_root_list()) { |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2406 // Actually look inside, to verify the claim that it's clean. |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2407 DebugScavengeRoot debug_scavenge_root(this); |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2408 oops_do(&debug_scavenge_root); |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2409 if (!debug_scavenge_root.ok()) |
|
3377
2aa9ddbb9e60
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
2405
diff
changeset
|
2410 fatal("found an unadvertised bad scavengable oop in the code cache"); |
| 0 | 2411 } |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2412 assert(scavenge_root_not_marked(), ""); |
| 0 | 2413 } |
| 2414 | |
|
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2415 #endif // PRODUCT |
| 0 | 2416 |
| 2417 // Printing operations | |
| 2418 | |
| 2419 void nmethod::print() const { | |
| 2420 ResourceMark rm; | |
| 2421 ttyLocker ttyl; // keep the following output all in one block | |
| 2422 | |
|
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2376
diff
changeset
|
2423 tty->print("Compiled method "); |
| 0 | 2424 |
| 2425 if (is_compiled_by_c1()) { | |
| 2426 tty->print("(c1) "); | |
| 2427 } else if (is_compiled_by_c2()) { | |
| 2428 tty->print("(c2) "); | |
| 1692 | 2429 } else if (is_compiled_by_shark()) { |
| 2430 tty->print("(shark) "); | |
| 0 | 2431 } else { |
| 2432 tty->print("(nm) "); | |
| 2433 } | |
| 2434 | |
|
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2376
diff
changeset
|
2435 print_on(tty, NULL); |
|
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2376
diff
changeset
|
2436 |
| 0 | 2437 if (WizardMode) { |
| 2438 tty->print("((nmethod*) "INTPTR_FORMAT ") ", this); | |
| 2439 tty->print(" for method " INTPTR_FORMAT , (address)method()); | |
| 2440 tty->print(" { "); | |
| 2441 if (is_in_use()) tty->print("in_use "); | |
| 2442 if (is_not_entrant()) tty->print("not_entrant "); | |
| 2443 if (is_zombie()) tty->print("zombie "); | |
| 2444 if (is_unloaded()) tty->print("unloaded "); | |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2445 if (on_scavenge_root_list()) tty->print("scavenge_root "); |
| 0 | 2446 tty->print_cr("}:"); |
| 2447 } | |
| 2448 if (size () > 0) tty->print_cr(" total in heap [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
| 2449 (address)this, | |
| 2450 (address)this + size(), | |
| 2451 size()); | |
| 2452 if (relocation_size () > 0) tty->print_cr(" relocation [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
| 2453 relocation_begin(), | |
| 2454 relocation_end(), | |
| 2455 relocation_size()); | |
|
1762
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
2456 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
|
2457 consts_begin(), |
|
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
2458 consts_end(), |
|
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
2459 consts_size()); |
| 1748 | 2460 if (insts_size () > 0) tty->print_cr(" main code [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
| 2461 insts_begin(), | |
| 2462 insts_end(), | |
| 2463 insts_size()); | |
| 0 | 2464 if (stub_size () > 0) tty->print_cr(" stub code [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
| 2465 stub_begin(), | |
| 2466 stub_end(), | |
| 2467 stub_size()); | |
|
1563
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
1538
diff
changeset
|
2468 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
|
2469 oops_begin(), |
|
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
1538
diff
changeset
|
2470 oops_end(), |
|
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
1538
diff
changeset
|
2471 oops_size()); |
| 0 | 2472 if (scopes_data_size () > 0) tty->print_cr(" scopes data [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
| 2473 scopes_data_begin(), | |
| 2474 scopes_data_end(), | |
| 2475 scopes_data_size()); | |
| 2476 if (scopes_pcs_size () > 0) tty->print_cr(" scopes pcs [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
| 2477 scopes_pcs_begin(), | |
| 2478 scopes_pcs_end(), | |
| 2479 scopes_pcs_size()); | |
| 2480 if (dependencies_size () > 0) tty->print_cr(" dependencies [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
| 2481 dependencies_begin(), | |
| 2482 dependencies_end(), | |
| 2483 dependencies_size()); | |
| 2484 if (handler_table_size() > 0) tty->print_cr(" handler table [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
| 2485 handler_table_begin(), | |
| 2486 handler_table_end(), | |
| 2487 handler_table_size()); | |
| 2488 if (nul_chk_table_size() > 0) tty->print_cr(" nul chk table [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
| 2489 nul_chk_table_begin(), | |
| 2490 nul_chk_table_end(), | |
| 2491 nul_chk_table_size()); | |
| 2492 } | |
| 2493 | |
|
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2494 void nmethod::print_code() { |
|
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2495 HandleMark hm; |
|
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2496 ResourceMark m; |
|
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2497 Disassembler::decode(this); |
|
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2498 } |
|
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2499 |
|
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2500 |
|
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2501 #ifndef PRODUCT |
| 0 | 2502 |
| 2503 void nmethod::print_scopes() { | |
| 2504 // Find the first pc desc for all scopes in the code and print it. | |
| 2505 ResourceMark rm; | |
| 2506 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
| 2507 if (p->scope_decode_offset() == DebugInformationRecorder::serialized_null) | |
| 2508 continue; | |
| 2509 | |
| 2510 ScopeDesc* sd = scope_desc_at(p->real_pc(this)); | |
| 2511 sd->print_on(tty, p); | |
| 2512 } | |
| 2513 } | |
| 2514 | |
| 2515 void nmethod::print_dependencies() { | |
| 2516 ResourceMark rm; | |
| 2517 ttyLocker ttyl; // keep the following output all in one block | |
| 2518 tty->print_cr("Dependencies:"); | |
| 2519 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
| 2520 deps.print_dependency(); | |
| 2521 klassOop ctxk = deps.context_type(); | |
| 2522 if (ctxk != NULL) { | |
| 2523 Klass* k = Klass::cast(ctxk); | |
| 2524 if (k->oop_is_instance() && ((instanceKlass*)k)->is_dependent_nmethod(this)) { | |
| 30 | 2525 tty->print_cr(" [nmethod<=klass]%s", k->external_name()); |
| 0 | 2526 } |
| 2527 } | |
| 2528 deps.log_dependency(); // put it into the xml log also | |
| 2529 } | |
| 2530 } | |
| 2531 | |
| 2532 | |
| 2533 void nmethod::print_relocations() { | |
| 2534 ResourceMark m; // in case methods get printed via the debugger | |
| 2535 tty->print_cr("relocations:"); | |
| 2536 RelocIterator iter(this); | |
| 2537 iter.print(); | |
| 2538 if (UseRelocIndex) { | |
| 2539 jint* index_end = (jint*)relocation_end() - 1; | |
| 2540 jint index_size = *index_end; | |
| 2541 jint* index_start = (jint*)( (address)index_end - index_size ); | |
| 2542 tty->print_cr(" index @" INTPTR_FORMAT ": index_size=%d", index_start, index_size); | |
| 2543 if (index_size > 0) { | |
| 2544 jint* ip; | |
| 2545 for (ip = index_start; ip+2 <= index_end; ip += 2) | |
| 2546 tty->print_cr(" (%d %d) addr=" INTPTR_FORMAT " @" INTPTR_FORMAT, | |
| 2547 ip[0], | |
| 2548 ip[1], | |
| 2549 header_end()+ip[0], | |
| 2550 relocation_begin()-1+ip[1]); | |
| 2551 for (; ip < index_end; ip++) | |
| 2552 tty->print_cr(" (%d ?)", ip[0]); | |
| 2553 tty->print_cr(" @" INTPTR_FORMAT ": index_size=%d", ip, *ip++); | |
| 2554 tty->print_cr("reloc_end @" INTPTR_FORMAT ":", ip); | |
| 2555 } | |
| 2556 } | |
| 2557 } | |
| 2558 | |
| 2559 | |
| 2560 void nmethod::print_pcs() { | |
| 2561 ResourceMark m; // in case methods get printed via debugger | |
| 2562 tty->print_cr("pc-bytecode offsets:"); | |
| 2563 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
| 2564 p->print(this); | |
| 2565 } | |
| 2566 } | |
| 2567 | |
|
100
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diff
changeset
|
2568 #endif // PRODUCT |
| 0 | 2569 |
| 2570 const char* nmethod::reloc_string_for(u_char* begin, u_char* end) { | |
| 2571 RelocIterator iter(this, begin, end); | |
| 2572 bool have_one = false; | |
| 2573 while (iter.next()) { | |
| 2574 have_one = true; | |
| 2575 switch (iter.type()) { | |
| 2576 case relocInfo::none: return "no_reloc"; | |
| 2577 case relocInfo::oop_type: { | |
| 2578 stringStream st; | |
| 2579 oop_Relocation* r = iter.oop_reloc(); | |
| 2580 oop obj = r->oop_value(); | |
| 2581 st.print("oop("); | |
| 2582 if (obj == NULL) st.print("NULL"); | |
| 2583 else obj->print_value_on(&st); | |
| 2584 st.print(")"); | |
| 2585 return st.as_string(); | |
| 2586 } | |
| 2587 case relocInfo::virtual_call_type: return "virtual_call"; | |
| 2588 case relocInfo::opt_virtual_call_type: return "optimized virtual_call"; | |
| 2589 case relocInfo::static_call_type: return "static_call"; | |
| 2590 case relocInfo::static_stub_type: return "static_stub"; | |
| 2591 case relocInfo::runtime_call_type: return "runtime_call"; | |
| 2592 case relocInfo::external_word_type: return "external_word"; | |
| 2593 case relocInfo::internal_word_type: return "internal_word"; | |
| 2594 case relocInfo::section_word_type: return "section_word"; | |
| 2595 case relocInfo::poll_type: return "poll"; | |
| 2596 case relocInfo::poll_return_type: return "poll_return"; | |
| 2597 case relocInfo::type_mask: return "type_bit_mask"; | |
| 2598 } | |
| 2599 } | |
| 2600 return have_one ? "other" : NULL; | |
| 2601 } | |
| 2602 | |
| 2603 // Return a the last scope in (begin..end] | |
| 2604 ScopeDesc* nmethod::scope_desc_in(address begin, address end) { | |
| 2605 PcDesc* p = pc_desc_near(begin+1); | |
| 2606 if (p != NULL && p->real_pc(this) <= end) { | |
| 2607 return new ScopeDesc(this, p->scope_decode_offset(), | |
|
3018
5857923e563c
Fixed an issue with frame states in exception dispatch chains (now we are correctly rethrowing the exception immediately at entering the interpreter).
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
2891
diff
changeset
|
2608 p->obj_decode_offset(), p->should_reexecute(), p->rethrow_exception(), |
|
1253
f70b0d9ab095
6910618: C2: Error: assert(d->is_oop(),"JVM_ArrayCopy: dst not an oop")
kvn
parents:
1250
diff
changeset
|
2609 p->return_oop()); |
| 0 | 2610 } |
| 2611 return NULL; | |
| 2612 } | |
| 2613 | |
|
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2614 void nmethod::print_nmethod_labels(outputStream* stream, address block_begin) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2615 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
|
2616 if (block_begin == verified_entry_point()) stream->print_cr("[Verified Entry Point]"); |
|
5798
2585af1e26ac
implemented non-XIR lowering of invokes (todo: inline virtual dispatch and null checking of receivers)
Doug Simon <doug.simon@oracle.com>
parents:
5251
diff
changeset
|
2617 if (GRAAL_ONLY(_exception_offset >= 0 &&) block_begin == exception_begin()) stream->print_cr("[Exception Handler]"); |
|
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2618 if (block_begin == stub_begin()) stream->print_cr("[Stub Code]"); |
|
5798
2585af1e26ac
implemented non-XIR lowering of invokes (todo: inline virtual dispatch and null checking of receivers)
Doug Simon <doug.simon@oracle.com>
parents:
5251
diff
changeset
|
2619 if (GRAAL_ONLY(_deoptimize_offset >= 0 &&) 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
|
2620 |
|
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
twisti
parents:
1644
diff
changeset
|
2621 if (has_method_handle_invokes()) |
|
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
twisti
parents:
1644
diff
changeset
|
2622 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
|
2623 |
|
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2624 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
|
2625 |
|
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2626 if (block_begin == entry_point()) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2627 methodHandle m = method(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2628 if (m.not_null()) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2629 stream->print(" # "); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2630 m->print_value_on(stream); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2631 stream->cr(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2632 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2633 if (m.not_null() && !is_osr_method()) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2634 ResourceMark rm; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2635 int sizeargs = m->size_of_parameters(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2636 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
|
2637 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, sizeargs); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2638 { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2639 int sig_index = 0; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2640 if (!m->is_static()) |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2641 sig_bt[sig_index++] = T_OBJECT; // 'this' |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2642 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
|
2643 BasicType t = ss.type(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2644 sig_bt[sig_index++] = t; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2645 if (type2size[t] == 2) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2646 sig_bt[sig_index++] = T_VOID; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2647 } else { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2648 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
|
2649 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2650 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2651 assert(sig_index == sizeargs, ""); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2652 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2653 const char* spname = "sp"; // make arch-specific? |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2654 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
|
2655 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
|
2656 int tab1 = 14, tab2 = 24; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2657 int sig_index = 0; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2658 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
|
2659 bool did_old_sp = false; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2660 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
|
2661 bool at_this = (arg_index == -1); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2662 bool at_old_sp = false; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2663 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
|
2664 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
|
2665 if (at_this) |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2666 stream->print(" # this: "); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2667 else |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2668 stream->print(" # parm%d: ", arg_index); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2669 stream->move_to(tab1); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2670 VMReg fst = regs[sig_index].first(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2671 VMReg snd = regs[sig_index].second(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2672 if (fst->is_reg()) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2673 stream->print("%s", fst->name()); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2674 if (snd->is_valid()) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2675 stream->print(":%s", snd->name()); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2676 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2677 } else if (fst->is_stack()) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2678 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
|
2679 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
|
2680 stream->print("[%s+0x%x]", spname, offset); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2681 } else { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2682 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
|
2683 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2684 stream->print(" "); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2685 stream->move_to(tab2); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2686 stream->print("= "); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2687 if (at_this) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2688 m->method_holder()->print_value_on(stream); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2689 } else { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2690 bool did_name = false; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2691 if (!at_this && ss.is_object()) { |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2142
diff
changeset
|
2692 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
|
2693 if (name != NULL) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2694 name->print_value_on(stream); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2695 did_name = true; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2696 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2697 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2698 if (!did_name) |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2699 stream->print("%s", type2name(t)); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2700 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2701 if (at_old_sp) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2702 stream->print(" (%s of caller)", spname); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2703 did_old_sp = true; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2704 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2705 stream->cr(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2706 sig_index += type2size[t]; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2707 arg_index += 1; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2708 if (!at_this) ss.next(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2709 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2710 if (!did_old_sp) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2711 stream->print(" # "); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2712 stream->move_to(tab1); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2713 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
|
2714 stream->print(" (%s of caller)", spname); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2715 stream->cr(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2716 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2717 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2718 } |
|
4e6abf09f540
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|
2719 } |
|
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2720 |
| 0 | 2721 void nmethod::print_code_comment_on(outputStream* st, int column, u_char* begin, u_char* end) { |
| 2722 // First, find an oopmap in (begin, end]. | |
| 2723 // We use the odd half-closed interval so that oop maps and scope descs | |
| 2724 // which are tied to the byte after a call are printed with the call itself. | |
| 1748 | 2725 address base = code_begin(); |
| 0 | 2726 OopMapSet* oms = oop_maps(); |
| 2727 if (oms != NULL) { | |
| 2728 for (int i = 0, imax = oms->size(); i < imax; i++) { | |
| 2729 OopMap* om = oms->at(i); | |
| 2730 address pc = base + om->offset(); | |
| 2731 if (pc > begin) { | |
| 2732 if (pc <= end) { | |
|
100
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|
2733 st->move_to(column); |
|
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|
2734 st->print("; "); |
|
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|
2735 om->print_on(st); |
| 0 | 2736 } |
| 2737 break; | |
| 2738 } | |
| 2739 } | |
| 2740 } | |
|
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2741 |
|
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|
2742 // Print any debug info present at this pc. |
| 0 | 2743 ScopeDesc* sd = scope_desc_in(begin, end); |
| 2744 if (sd != NULL) { | |
|
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|
2745 st->move_to(column); |
| 0 | 2746 if (sd->bci() == SynchronizationEntryBCI) { |
| 2747 st->print(";*synchronization entry"); | |
| 2748 } else { | |
| 2749 if (sd->method().is_null()) { | |
|
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2750 st->print("method is NULL"); |
| 0 | 2751 } else if (sd->method()->is_native()) { |
|
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2752 st->print("method is native"); |
| 0 | 2753 } else { |
| 2142 | 2754 Bytecodes::Code bc = sd->method()->java_code_at(sd->bci()); |
| 0 | 2755 st->print(";*%s", Bytecodes::name(bc)); |
| 2756 switch (bc) { | |
| 2757 case Bytecodes::_invokevirtual: | |
| 2758 case Bytecodes::_invokespecial: | |
| 2759 case Bytecodes::_invokestatic: | |
| 2760 case Bytecodes::_invokeinterface: | |
| 2761 { | |
| 2142 | 2762 Bytecode_invoke invoke(sd->method(), sd->bci()); |
| 0 | 2763 st->print(" "); |
| 2142 | 2764 if (invoke.name() != NULL) |
| 2765 invoke.name()->print_symbol_on(st); | |
| 0 | 2766 else |
| 2767 st->print("<UNKNOWN>"); | |
| 2768 break; | |
| 2769 } | |
| 2770 case Bytecodes::_getfield: | |
| 2771 case Bytecodes::_putfield: | |
| 2772 case Bytecodes::_getstatic: | |
| 2773 case Bytecodes::_putstatic: | |
| 2774 { | |
| 2142 | 2775 Bytecode_field field(sd->method(), sd->bci()); |
| 0 | 2776 st->print(" "); |
| 2142 | 2777 if (field.name() != NULL) |
| 2778 field.name()->print_symbol_on(st); | |
| 0 | 2779 else |
| 2780 st->print("<UNKNOWN>"); | |
| 2781 } | |
| 2782 } | |
| 2783 } | |
| 2784 } | |
|
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2785 |
| 0 | 2786 // Print all scopes |
| 2787 for (;sd != NULL; sd = sd->sender()) { | |
|
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2788 st->move_to(column); |
| 0 | 2789 st->print("; -"); |
| 2790 if (sd->method().is_null()) { | |
|
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2791 st->print("method is NULL"); |
| 0 | 2792 } else { |
| 2793 sd->method()->print_short_name(st); | |
| 2794 } | |
| 2795 int lineno = sd->method()->line_number_from_bci(sd->bci()); | |
| 2796 if (lineno != -1) { | |
| 2797 st->print("@%d (line %d)", sd->bci(), lineno); | |
| 2798 } else { | |
| 2799 st->print("@%d", sd->bci()); | |
| 2800 } | |
| 2801 st->cr(); | |
| 2802 } | |
| 2803 } | |
| 2804 | |
| 2805 // Print relocation information | |
| 2806 const char* str = reloc_string_for(begin, end); | |
| 2807 if (str != NULL) { | |
| 2808 if (sd != NULL) st->cr(); | |
|
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|
2809 st->move_to(column); |
| 0 | 2810 st->print("; {%s}", str); |
| 2811 } | |
| 1748 | 2812 int cont_offset = ImplicitExceptionTable(this).at(begin - code_begin()); |
| 0 | 2813 if (cont_offset != 0) { |
|
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|
2814 st->move_to(column); |
| 1748 | 2815 st->print("; implicit exception: dispatches to " INTPTR_FORMAT, code_begin() + cont_offset); |
| 0 | 2816 } |
| 2817 | |
| 2818 } | |
| 2819 | |
|
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|
2820 #ifndef PRODUCT |
|
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2821 |
| 0 | 2822 void nmethod::print_value_on(outputStream* st) const { |
|
2405
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|
2823 st->print("nmethod"); |
|
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|
2824 print_on(st, NULL); |
| 0 | 2825 } |
| 2826 | |
| 2827 void nmethod::print_calls(outputStream* st) { | |
| 2828 RelocIterator iter(this); | |
| 2829 while (iter.next()) { | |
| 2830 switch (iter.type()) { | |
| 2831 case relocInfo::virtual_call_type: | |
| 2832 case relocInfo::opt_virtual_call_type: { | |
| 2833 VerifyMutexLocker mc(CompiledIC_lock); | |
| 2834 CompiledIC_at(iter.reloc())->print(); | |
| 2835 break; | |
| 2836 } | |
| 2837 case relocInfo::static_call_type: | |
| 2838 st->print_cr("Static call at " INTPTR_FORMAT, iter.reloc()->addr()); | |
| 2839 compiledStaticCall_at(iter.reloc())->print(); | |
| 2840 break; | |
| 2841 } | |
| 2842 } | |
| 2843 } | |
| 2844 | |
| 2845 void nmethod::print_handler_table() { | |
| 2846 ExceptionHandlerTable(this).print(); | |
| 2847 } | |
| 2848 | |
| 2849 void nmethod::print_nul_chk_table() { | |
| 1748 | 2850 ImplicitExceptionTable(this).print(code_begin()); |
| 0 | 2851 } |
| 2852 | |
|
4561
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2853 #endif // PRODUCT |
|
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parents:
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diff
changeset
|
2854 |
| 0 | 2855 void nmethod::print_statistics() { |
| 2856 ttyLocker ttyl; | |
| 2857 if (xtty != NULL) xtty->head("statistics type='nmethod'"); | |
| 2858 nmethod_stats.print_native_nmethod_stats(); | |
| 2859 nmethod_stats.print_nmethod_stats(); | |
| 2860 DebugInformationRecorder::print_statistics(); | |
| 2861 nmethod_stats.print_pc_stats(); | |
| 2862 Dependencies::print_statistics(); | |
| 2863 if (xtty != NULL) xtty->tail("statistics"); | |
| 2864 } |