Mercurial > hg > truffle
annotate src/share/vm/code/nmethod.cpp @ 12316:190899198332
7195622: CheckUnhandledOops has limited usefulness now
Summary: Enable CHECK_UNHANDLED_OOPS in fastdebug builds across all supported platforms.
Reviewed-by: coleenp, hseigel, dholmes, stefank, twisti, ihse, rdurbin
Contributed-by: lois.foltan@oracle.com
| author | hseigel |
|---|---|
| date | Thu, 26 Sep 2013 10:25:02 -0400 |
| parents | 3bfb204913de |
| children | 268e7a2178d7 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "code/codeCache.hpp" | |
| 27 #include "code/compiledIC.hpp" | |
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28 #include "code/dependencies.hpp" |
| 1972 | 29 #include "code/nmethod.hpp" |
| 30 #include "code/scopeDesc.hpp" | |
| 31 #include "compiler/abstractCompiler.hpp" | |
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32 #include "compiler/compileBroker.hpp" |
| 1972 | 33 #include "compiler/compileLog.hpp" |
| 34 #include "compiler/compilerOracle.hpp" | |
| 35 #include "compiler/disassembler.hpp" | |
| 36 #include "interpreter/bytecode.hpp" | |
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37 #include "oops/methodData.hpp" |
| 1972 | 38 #include "prims/jvmtiRedefineClassesTrace.hpp" |
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39 #include "prims/jvmtiImpl.hpp" |
| 1972 | 40 #include "runtime/sharedRuntime.hpp" |
| 41 #include "runtime/sweeper.hpp" | |
| 42 #include "utilities/dtrace.hpp" | |
| 43 #include "utilities/events.hpp" | |
| 44 #include "utilities/xmlstream.hpp" | |
| 45 #ifdef SHARK | |
| 46 #include "shark/sharkCompiler.hpp" | |
| 47 #endif | |
| 0 | 48 |
| 49 #ifdef DTRACE_ENABLED | |
| 50 | |
| 51 // Only bother with this argument setup if dtrace is available | |
| 52 | |
| 4006 | 53 #ifndef USDT2 |
| 0 | 54 HS_DTRACE_PROBE_DECL8(hotspot, compiled__method__load, |
| 55 const char*, int, const char*, int, const char*, int, void*, size_t); | |
| 56 | |
| 57 HS_DTRACE_PROBE_DECL6(hotspot, compiled__method__unload, | |
| 58 char*, int, char*, int, char*, int); | |
| 59 | |
| 60 #define DTRACE_METHOD_UNLOAD_PROBE(method) \ | |
| 61 { \ | |
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62 Method* m = (method); \ |
| 0 | 63 if (m != NULL) { \ |
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64 Symbol* klass_name = m->klass_name(); \ |
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65 Symbol* name = m->name(); \ |
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66 Symbol* signature = m->signature(); \ |
| 0 | 67 HS_DTRACE_PROBE6(hotspot, compiled__method__unload, \ |
| 68 klass_name->bytes(), klass_name->utf8_length(), \ | |
| 69 name->bytes(), name->utf8_length(), \ | |
| 70 signature->bytes(), signature->utf8_length()); \ | |
| 71 } \ | |
| 72 } | |
| 4006 | 73 #else /* USDT2 */ |
| 74 #define DTRACE_METHOD_UNLOAD_PROBE(method) \ | |
| 75 { \ | |
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76 Method* m = (method); \ |
| 4006 | 77 if (m != NULL) { \ |
| 78 Symbol* klass_name = m->klass_name(); \ | |
| 79 Symbol* name = m->name(); \ | |
| 80 Symbol* signature = m->signature(); \ | |
| 81 HOTSPOT_COMPILED_METHOD_UNLOAD( \ | |
| 82 (char *) klass_name->bytes(), klass_name->utf8_length(), \ | |
| 83 (char *) name->bytes(), name->utf8_length(), \ | |
| 84 (char *) signature->bytes(), signature->utf8_length()); \ | |
| 85 } \ | |
| 86 } | |
| 87 #endif /* USDT2 */ | |
| 0 | 88 |
| 89 #else // ndef DTRACE_ENABLED | |
| 90 | |
| 91 #define DTRACE_METHOD_UNLOAD_PROBE(method) | |
| 92 | |
| 93 #endif | |
| 94 | |
| 95 bool nmethod::is_compiled_by_c1() const { | |
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96 if (compiler() == NULL) { |
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97 return false; |
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98 } |
| 0 | 99 return compiler()->is_c1(); |
| 100 } | |
| 101 bool nmethod::is_compiled_by_c2() const { | |
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102 if (compiler() == NULL) { |
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103 return false; |
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104 } |
| 0 | 105 return compiler()->is_c2(); |
| 106 } | |
| 1692 | 107 bool nmethod::is_compiled_by_shark() const { |
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108 if (compiler() == NULL) { |
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109 return false; |
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110 } |
| 1692 | 111 return compiler()->is_shark(); |
| 112 } | |
| 0 | 113 |
| 114 | |
| 115 | |
| 116 //--------------------------------------------------------------------------------- | |
| 117 // NMethod statistics | |
| 118 // They are printed under various flags, including: | |
| 119 // PrintC1Statistics, PrintOptoStatistics, LogVMOutput, and LogCompilation. | |
| 120 // (In the latter two cases, they like other stats are printed to the log only.) | |
| 121 | |
| 122 #ifndef PRODUCT | |
| 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 #endif //PRODUCT | |
| 213 | |
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214 |
| 0 | 215 //--------------------------------------------------------------------------------- |
| 216 | |
| 217 | |
| 218 ExceptionCache::ExceptionCache(Handle exception, address pc, address handler) { | |
| 219 assert(pc != NULL, "Must be non null"); | |
| 220 assert(exception.not_null(), "Must be non null"); | |
| 221 assert(handler != NULL, "Must be non null"); | |
| 222 | |
| 223 _count = 0; | |
| 224 _exception_type = exception->klass(); | |
| 225 _next = NULL; | |
| 226 | |
| 227 add_address_and_handler(pc,handler); | |
| 228 } | |
| 229 | |
| 230 | |
| 231 address ExceptionCache::match(Handle exception, address pc) { | |
| 232 assert(pc != NULL,"Must be non null"); | |
| 233 assert(exception.not_null(),"Must be non null"); | |
| 234 if (exception->klass() == exception_type()) { | |
| 235 return (test_address(pc)); | |
| 236 } | |
| 237 | |
| 238 return NULL; | |
| 239 } | |
| 240 | |
| 241 | |
| 242 bool ExceptionCache::match_exception_with_space(Handle exception) { | |
| 243 assert(exception.not_null(),"Must be non null"); | |
| 244 if (exception->klass() == exception_type() && count() < cache_size) { | |
| 245 return true; | |
| 246 } | |
| 247 return false; | |
| 248 } | |
| 249 | |
| 250 | |
| 251 address ExceptionCache::test_address(address addr) { | |
| 252 for (int i=0; i<count(); i++) { | |
| 253 if (pc_at(i) == addr) { | |
| 254 return handler_at(i); | |
| 255 } | |
| 256 } | |
| 257 return NULL; | |
| 258 } | |
| 259 | |
| 260 | |
| 261 bool ExceptionCache::add_address_and_handler(address addr, address handler) { | |
| 262 if (test_address(addr) == handler) return true; | |
| 263 if (count() < cache_size) { | |
| 264 set_pc_at(count(),addr); | |
| 265 set_handler_at(count(), handler); | |
| 266 increment_count(); | |
| 267 return true; | |
| 268 } | |
| 269 return false; | |
| 270 } | |
| 271 | |
| 272 | |
| 273 // private method for handling exception cache | |
| 274 // These methods are private, and used to manipulate the exception cache | |
| 275 // directly. | |
| 276 ExceptionCache* nmethod::exception_cache_entry_for_exception(Handle exception) { | |
| 277 ExceptionCache* ec = exception_cache(); | |
| 278 while (ec != NULL) { | |
| 279 if (ec->match_exception_with_space(exception)) { | |
| 280 return ec; | |
| 281 } | |
| 282 ec = ec->next(); | |
| 283 } | |
| 284 return NULL; | |
| 285 } | |
| 286 | |
| 287 | |
| 288 //----------------------------------------------------------------------------- | |
| 289 | |
| 290 | |
| 291 // Helper used by both find_pc_desc methods. | |
| 292 static inline bool match_desc(PcDesc* pc, int pc_offset, bool approximate) { | |
| 293 NOT_PRODUCT(++nmethod_stats.pc_desc_tests); | |
| 294 if (!approximate) | |
| 295 return pc->pc_offset() == pc_offset; | |
| 296 else | |
| 297 return (pc-1)->pc_offset() < pc_offset && pc_offset <= pc->pc_offset(); | |
| 298 } | |
| 299 | |
| 300 void PcDescCache::reset_to(PcDesc* initial_pc_desc) { | |
| 301 if (initial_pc_desc == NULL) { | |
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302 _pc_descs[0] = NULL; // native method; no PcDescs at all |
| 0 | 303 return; |
| 304 } | |
| 305 NOT_PRODUCT(++nmethod_stats.pc_desc_resets); | |
| 306 // reset the cache by filling it with benign (non-null) values | |
| 307 assert(initial_pc_desc->pc_offset() < 0, "must be sentinel"); | |
| 308 for (int i = 0; i < cache_size; i++) | |
| 309 _pc_descs[i] = initial_pc_desc; | |
| 310 } | |
| 311 | |
| 312 PcDesc* PcDescCache::find_pc_desc(int pc_offset, bool approximate) { | |
| 313 NOT_PRODUCT(++nmethod_stats.pc_desc_queries); | |
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314 NOT_PRODUCT(if (approximate) ++nmethod_stats.pc_desc_approx); |
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315 |
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316 // Note: one might think that caching the most recently |
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317 // read value separately would be a win, but one would be |
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318 // wrong. When many threads are updating it, the cache |
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319 // line it's in would bounce between caches, negating |
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320 // any benefit. |
| 0 | 321 |
| 322 // In order to prevent race conditions do not load cache elements | |
| 323 // repeatedly, but use a local copy: | |
| 324 PcDesc* res; | |
| 325 | |
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326 // Step one: Check the most recently added value. |
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327 res = _pc_descs[0]; |
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328 if (res == NULL) return NULL; // native method; no PcDescs at all |
| 0 | 329 if (match_desc(res, pc_offset, approximate)) { |
| 330 NOT_PRODUCT(++nmethod_stats.pc_desc_repeats); | |
| 331 return res; | |
| 332 } | |
| 333 | |
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334 // Step two: Check the rest of the LRU cache. |
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335 for (int i = 1; i < cache_size; ++i) { |
| 0 | 336 res = _pc_descs[i]; |
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337 if (res->pc_offset() < 0) break; // optimization: skip empty cache |
| 0 | 338 if (match_desc(res, pc_offset, approximate)) { |
| 339 NOT_PRODUCT(++nmethod_stats.pc_desc_hits); | |
| 340 return res; | |
| 341 } | |
| 342 } | |
| 343 | |
| 344 // Report failure. | |
| 345 return NULL; | |
| 346 } | |
| 347 | |
| 348 void PcDescCache::add_pc_desc(PcDesc* pc_desc) { | |
| 349 NOT_PRODUCT(++nmethod_stats.pc_desc_adds); | |
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350 // Update the LRU cache by shifting pc_desc forward. |
| 0 | 351 for (int i = 0; i < cache_size; i++) { |
| 352 PcDesc* next = _pc_descs[i]; | |
| 353 _pc_descs[i] = pc_desc; | |
| 354 pc_desc = next; | |
| 355 } | |
| 356 } | |
| 357 | |
| 358 // adjust pcs_size so that it is a multiple of both oopSize and | |
| 359 // sizeof(PcDesc) (assumes that if sizeof(PcDesc) is not a multiple | |
| 360 // of oopSize, then 2*sizeof(PcDesc) is) | |
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361 static int adjust_pcs_size(int pcs_size) { |
| 0 | 362 int nsize = round_to(pcs_size, oopSize); |
| 363 if ((nsize % sizeof(PcDesc)) != 0) { | |
| 364 nsize = pcs_size + sizeof(PcDesc); | |
| 365 } | |
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366 assert((nsize % oopSize) == 0, "correct alignment"); |
| 0 | 367 return nsize; |
| 368 } | |
| 369 | |
| 370 //----------------------------------------------------------------------------- | |
| 371 | |
| 372 | |
| 373 void nmethod::add_exception_cache_entry(ExceptionCache* new_entry) { | |
| 374 assert(ExceptionCache_lock->owned_by_self(),"Must hold the ExceptionCache_lock"); | |
| 375 assert(new_entry != NULL,"Must be non null"); | |
| 376 assert(new_entry->next() == NULL, "Must be null"); | |
| 377 | |
| 378 if (exception_cache() != NULL) { | |
| 379 new_entry->set_next(exception_cache()); | |
| 380 } | |
| 381 set_exception_cache(new_entry); | |
| 382 } | |
| 383 | |
| 384 void nmethod::remove_from_exception_cache(ExceptionCache* ec) { | |
| 385 ExceptionCache* prev = NULL; | |
| 386 ExceptionCache* curr = exception_cache(); | |
| 387 assert(curr != NULL, "nothing to remove"); | |
| 388 // find the previous and next entry of ec | |
| 389 while (curr != ec) { | |
| 390 prev = curr; | |
| 391 curr = curr->next(); | |
| 392 assert(curr != NULL, "ExceptionCache not found"); | |
| 393 } | |
| 394 // now: curr == ec | |
| 395 ExceptionCache* next = curr->next(); | |
| 396 if (prev == NULL) { | |
| 397 set_exception_cache(next); | |
| 398 } else { | |
| 399 prev->set_next(next); | |
| 400 } | |
| 401 delete curr; | |
| 402 } | |
| 403 | |
| 404 | |
| 405 // public method for accessing the exception cache | |
| 406 // These are the public access methods. | |
| 407 address nmethod::handler_for_exception_and_pc(Handle exception, address pc) { | |
| 408 // We never grab a lock to read the exception cache, so we may | |
| 409 // have false negatives. This is okay, as it can only happen during | |
| 410 // the first few exception lookups for a given nmethod. | |
| 411 ExceptionCache* ec = exception_cache(); | |
| 412 while (ec != NULL) { | |
| 413 address ret_val; | |
| 414 if ((ret_val = ec->match(exception,pc)) != NULL) { | |
| 415 return ret_val; | |
| 416 } | |
| 417 ec = ec->next(); | |
| 418 } | |
| 419 return NULL; | |
| 420 } | |
| 421 | |
| 422 | |
| 423 void nmethod::add_handler_for_exception_and_pc(Handle exception, address pc, address handler) { | |
| 424 // There are potential race conditions during exception cache updates, so we | |
| 425 // must own the ExceptionCache_lock before doing ANY modifications. Because | |
| 605 | 426 // we don't lock during reads, it is possible to have several threads attempt |
| 0 | 427 // to update the cache with the same data. We need to check for already inserted |
| 428 // copies of the current data before adding it. | |
| 429 | |
| 430 MutexLocker ml(ExceptionCache_lock); | |
| 431 ExceptionCache* target_entry = exception_cache_entry_for_exception(exception); | |
| 432 | |
| 433 if (target_entry == NULL || !target_entry->add_address_and_handler(pc,handler)) { | |
| 434 target_entry = new ExceptionCache(exception,pc,handler); | |
| 435 add_exception_cache_entry(target_entry); | |
| 436 } | |
| 437 } | |
| 438 | |
| 439 | |
| 440 //-------------end of code for ExceptionCache-------------- | |
| 441 | |
| 442 | |
| 443 int nmethod::total_size() const { | |
| 444 return | |
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445 consts_size() + |
| 1748 | 446 insts_size() + |
| 0 | 447 stub_size() + |
| 448 scopes_data_size() + | |
| 449 scopes_pcs_size() + | |
| 450 handler_table_size() + | |
| 451 nul_chk_table_size(); | |
| 452 } | |
| 453 | |
| 454 const char* nmethod::compile_kind() const { | |
| 455 if (is_osr_method()) return "osr"; | |
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456 if (method() != NULL && is_native_method()) return "c2n"; |
| 0 | 457 return NULL; |
| 458 } | |
| 459 | |
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460 // Fill in default values for various flag fields |
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461 void nmethod::init_defaults() { |
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462 _state = alive; |
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463 _marked_for_reclamation = 0; |
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464 _has_flushed_dependencies = 0; |
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465 _speculatively_disconnected = 0; |
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466 _has_unsafe_access = 0; |
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467 _has_method_handle_invokes = 0; |
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468 _lazy_critical_native = 0; |
|
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469 _has_wide_vectors = 0; |
|
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470 _marked_for_deoptimization = 0; |
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471 _lock_count = 0; |
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472 _stack_traversal_mark = 0; |
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473 _unload_reported = false; // jvmti state |
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474 |
| 1726 | 475 #ifdef ASSERT |
| 476 _oops_are_stale = false; | |
| 477 #endif | |
| 478 | |
|
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479 _oops_do_mark_link = NULL; |
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480 _jmethod_id = NULL; |
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481 _osr_link = NULL; |
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482 _scavenge_root_link = NULL; |
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483 _scavenge_root_state = 0; |
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484 _saved_nmethod_link = NULL; |
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485 _compiler = 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 nmethod* nmethod::new_native_nmethod(methodHandle method, | |
|
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493 int compile_id, |
| 0 | 494 CodeBuffer *code_buffer, |
| 495 int vep_offset, | |
| 496 int frame_complete, | |
| 497 int frame_size, | |
| 498 ByteSize basic_lock_owner_sp_offset, | |
| 499 ByteSize basic_lock_sp_offset, | |
| 500 OopMapSet* oop_maps) { | |
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501 code_buffer->finalize_oop_references(method); |
| 0 | 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)); | |
|
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507 CodeOffsets offsets; |
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508 offsets.set_value(CodeOffsets::Verified_Entry, vep_offset); |
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509 offsets.set_value(CodeOffsets::Frame_Complete, frame_complete); |
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510 nm = new (native_nmethod_size) nmethod(method(), native_nmethod_size, |
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511 compile_id, &offsets, |
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512 code_buffer, frame_size, |
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513 basic_lock_owner_sp_offset, |
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514 basic_lock_sp_offset, oop_maps); |
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515 NOT_PRODUCT(if (nm != NULL) nmethod_stats.note_native_nmethod(nm)); |
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516 if (PrintAssembly && nm != NULL) { |
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517 Disassembler::decode(nm); |
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518 } |
| 0 | 519 } |
| 520 // verify nmethod | |
| 521 debug_only(if (nm) nm->verify();) // might block | |
| 522 | |
| 523 if (nm != NULL) { | |
| 524 nm->log_new_nmethod(); | |
| 525 } | |
| 526 | |
| 527 return nm; | |
| 528 } | |
| 529 | |
|
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530 #ifdef HAVE_DTRACE_H |
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531 nmethod* nmethod::new_dtrace_nmethod(methodHandle method, |
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532 CodeBuffer *code_buffer, |
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533 int vep_offset, |
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534 int trap_offset, |
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535 int frame_complete, |
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536 int frame_size) { |
|
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537 code_buffer->finalize_oop_references(method); |
|
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538 // create nmethod |
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539 nmethod* nm = NULL; |
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540 { |
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541 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
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542 int nmethod_size = allocation_size(code_buffer, sizeof(nmethod)); |
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543 CodeOffsets offsets; |
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544 offsets.set_value(CodeOffsets::Verified_Entry, vep_offset); |
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545 offsets.set_value(CodeOffsets::Dtrace_trap, trap_offset); |
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546 offsets.set_value(CodeOffsets::Frame_Complete, frame_complete); |
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547 |
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548 nm = new (nmethod_size) nmethod(method(), nmethod_size, |
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549 &offsets, code_buffer, frame_size); |
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550 |
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551 NOT_PRODUCT(if (nm != NULL) nmethod_stats.note_nmethod(nm)); |
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552 if (PrintAssembly && nm != NULL) { |
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553 Disassembler::decode(nm); |
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554 } |
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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"); | |
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584 code_buffer->finalize_oop_references(method); |
| 0 | 585 // create nmethod |
| 586 nmethod* nm = NULL; | |
| 587 { MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
| 588 int nmethod_size = | |
| 589 allocation_size(code_buffer, sizeof(nmethod)) | |
| 590 + adjust_pcs_size(debug_info->pcs_size()) | |
| 591 + round_to(dependencies->size_in_bytes() , oopSize) | |
| 592 + round_to(handler_table->size_in_bytes(), oopSize) | |
| 593 + round_to(nul_chk_table->size_in_bytes(), oopSize) | |
| 594 + round_to(debug_info->data_size() , oopSize); | |
|
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595 |
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596 nm = new (nmethod_size) |
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597 nmethod(method(), nmethod_size, compile_id, entry_bci, offsets, |
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598 orig_pc_offset, debug_info, dependencies, code_buffer, frame_size, |
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599 oop_maps, |
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600 handler_table, |
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601 nul_chk_table, |
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602 compiler, |
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603 comp_level); |
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604 |
| 0 | 605 if (nm != NULL) { |
| 606 // To make dependency checking during class loading fast, record | |
| 607 // the nmethod dependencies in the classes it is dependent on. | |
| 608 // This allows the dependency checking code to simply walk the | |
| 609 // class hierarchy above the loaded class, checking only nmethods | |
| 610 // which are dependent on those classes. The slow way is to | |
| 611 // check every nmethod for dependencies which makes it linear in | |
| 612 // the number of methods compiled. For applications with a lot | |
| 613 // classes the slow way is too slow. | |
| 614 for (Dependencies::DepStream deps(nm); deps.next(); ) { | |
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615 Klass* klass = deps.context_type(); |
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616 if (klass == NULL) { |
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617 continue; // ignore things like evol_method |
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618 } |
| 0 | 619 |
| 620 // record this nmethod as dependent on this klass | |
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621 InstanceKlass::cast(klass)->add_dependent_nmethod(nm); |
| 0 | 622 } |
| 623 } | |
| 624 NOT_PRODUCT(if (nm != NULL) nmethod_stats.note_nmethod(nm)); | |
|
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625 if (PrintAssembly && nm != NULL) { |
| 0 | 626 Disassembler::decode(nm); |
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627 } |
| 0 | 628 } |
| 629 | |
| 630 // verify nmethod | |
| 631 debug_only(if (nm) nm->verify();) // might block | |
| 632 | |
| 633 if (nm != NULL) { | |
| 634 nm->log_new_nmethod(); | |
| 635 } | |
| 636 | |
| 637 // done | |
| 638 return nm; | |
| 639 } | |
| 640 | |
| 641 | |
| 642 // For native wrappers | |
| 643 nmethod::nmethod( | |
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644 Method* method, |
| 0 | 645 int nmethod_size, |
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646 int compile_id, |
| 0 | 647 CodeOffsets* offsets, |
| 648 CodeBuffer* code_buffer, | |
| 649 int frame_size, | |
| 650 ByteSize basic_lock_owner_sp_offset, | |
| 651 ByteSize basic_lock_sp_offset, | |
| 652 OopMapSet* oop_maps ) | |
| 653 : CodeBlob("native nmethod", code_buffer, sizeof(nmethod), | |
| 654 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, oop_maps), | |
| 2019 | 655 _native_receiver_sp_offset(basic_lock_owner_sp_offset), |
| 656 _native_basic_lock_sp_offset(basic_lock_sp_offset) | |
| 0 | 657 { |
| 658 { | |
| 659 debug_only(No_Safepoint_Verifier nsv;) | |
| 660 assert_locked_or_safepoint(CodeCache_lock); | |
| 661 | |
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662 init_defaults(); |
| 0 | 663 _method = method; |
| 664 _entry_bci = InvocationEntryBci; | |
| 665 // We have no exception handler or deopt handler make the | |
| 666 // values something that will never match a pc like the nmethod vtable entry | |
| 667 _exception_offset = 0; | |
| 668 _deoptimize_offset = 0; | |
| 1204 | 669 _deoptimize_mh_offset = 0; |
| 0 | 670 _orig_pc_offset = 0; |
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671 |
| 1748 | 672 _consts_offset = data_offset(); |
| 0 | 673 _stub_offset = data_offset(); |
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674 _oops_offset = data_offset(); |
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675 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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676 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
| 0 | 677 _scopes_pcs_offset = _scopes_data_offset; |
| 678 _dependencies_offset = _scopes_pcs_offset; | |
| 679 _handler_table_offset = _dependencies_offset; | |
| 680 _nul_chk_table_offset = _handler_table_offset; | |
| 681 _nmethod_end_offset = _nul_chk_table_offset; | |
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682 _compile_id = compile_id; |
| 0 | 683 _comp_level = CompLevel_none; |
| 1748 | 684 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
| 685 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
| 0 | 686 _osr_entry_point = NULL; |
| 687 _exception_cache = NULL; | |
| 688 _pc_desc_cache.reset_to(NULL); | |
| 689 | |
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690 code_buffer->copy_values_to(this); |
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691 if (ScavengeRootsInCode && detect_scavenge_root_oops()) { |
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692 CodeCache::add_scavenge_root_nmethod(this); |
| 12080 | 693 Universe::heap()->register_nmethod(this); |
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694 } |
|
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695 debug_only(verify_scavenge_root_oops()); |
| 0 | 696 CodeCache::commit(this); |
| 697 } | |
| 698 | |
| 699 if (PrintNativeNMethods || PrintDebugInfo || PrintRelocations || PrintDependencies) { | |
| 700 ttyLocker ttyl; // keep the following output all in one block | |
| 701 // This output goes directly to the tty, not the compiler log. | |
| 702 // To enable tools to match it up with the compilation activity, | |
| 703 // be sure to tag this tty output with the compile ID. | |
| 704 if (xtty != NULL) { | |
| 705 xtty->begin_head("print_native_nmethod"); | |
| 706 xtty->method(_method); | |
| 707 xtty->stamp(); | |
| 708 xtty->end_head(" address='" INTPTR_FORMAT "'", (intptr_t) this); | |
| 709 } | |
| 710 // print the header part first | |
| 711 print(); | |
| 712 // then print the requested information | |
| 713 if (PrintNativeNMethods) { | |
| 714 print_code(); | |
|
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715 if (oop_maps != NULL) { |
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716 oop_maps->print(); |
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717 } |
| 0 | 718 } |
| 719 if (PrintRelocations) { | |
| 720 print_relocations(); | |
| 721 } | |
| 722 if (xtty != NULL) { | |
| 723 xtty->tail("print_native_nmethod"); | |
| 724 } | |
| 725 } | |
| 726 } | |
| 727 | |
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728 // For dtrace wrappers |
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729 #ifdef HAVE_DTRACE_H |
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730 nmethod::nmethod( |
|
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731 Method* method, |
|
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732 int nmethod_size, |
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733 CodeOffsets* offsets, |
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734 CodeBuffer* code_buffer, |
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735 int frame_size) |
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736 : CodeBlob("dtrace nmethod", code_buffer, sizeof(nmethod), |
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737 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, NULL), |
| 2019 | 738 _native_receiver_sp_offset(in_ByteSize(-1)), |
| 739 _native_basic_lock_sp_offset(in_ByteSize(-1)) | |
|
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740 { |
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741 { |
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742 debug_only(No_Safepoint_Verifier nsv;) |
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743 assert_locked_or_safepoint(CodeCache_lock); |
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744 |
|
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745 init_defaults(); |
|
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746 _method = method; |
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747 _entry_bci = InvocationEntryBci; |
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748 // We have no exception handler or deopt handler make the |
|
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749 // values something that will never match a pc like the nmethod vtable entry |
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750 _exception_offset = 0; |
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751 _deoptimize_offset = 0; |
| 1204 | 752 _deoptimize_mh_offset = 0; |
|
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753 _unwind_handler_offset = -1; |
|
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754 _trap_offset = offsets->value(CodeOffsets::Dtrace_trap); |
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755 _orig_pc_offset = 0; |
| 1748 | 756 _consts_offset = data_offset(); |
|
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757 _stub_offset = data_offset(); |
|
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758 _oops_offset = data_offset(); |
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759 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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760 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
|
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761 _scopes_pcs_offset = _scopes_data_offset; |
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762 _dependencies_offset = _scopes_pcs_offset; |
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763 _handler_table_offset = _dependencies_offset; |
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764 _nul_chk_table_offset = _handler_table_offset; |
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765 _nmethod_end_offset = _nul_chk_table_offset; |
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766 _compile_id = 0; // default |
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767 _comp_level = CompLevel_none; |
| 1748 | 768 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
| 769 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
|
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770 _osr_entry_point = NULL; |
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771 _exception_cache = NULL; |
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772 _pc_desc_cache.reset_to(NULL); |
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|
773 |
|
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774 code_buffer->copy_values_to(this); |
|
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775 debug_only(verify_scavenge_root_oops()); |
|
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776 CodeCache::commit(this); |
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777 } |
|
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|
778 |
|
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779 if (PrintNMethods || PrintDebugInfo || PrintRelocations || PrintDependencies) { |
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780 ttyLocker ttyl; // keep the following output all in one block |
|
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781 // This output goes directly to the tty, not the compiler log. |
|
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782 // To enable tools to match it up with the compilation activity, |
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783 // be sure to tag this tty output with the compile ID. |
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784 if (xtty != NULL) { |
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785 xtty->begin_head("print_dtrace_nmethod"); |
|
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786 xtty->method(_method); |
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787 xtty->stamp(); |
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788 xtty->end_head(" address='" INTPTR_FORMAT "'", (intptr_t) this); |
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789 } |
|
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790 // print the header part first |
|
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791 print(); |
|
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|
792 // then print the requested information |
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793 if (PrintNMethods) { |
|
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794 print_code(); |
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795 } |
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796 if (PrintRelocations) { |
|
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797 print_relocations(); |
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798 } |
|
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799 if (xtty != NULL) { |
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800 xtty->tail("print_dtrace_nmethod"); |
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801 } |
|
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802 } |
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803 } |
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804 #endif // def HAVE_DTRACE_H |
| 0 | 805 |
|
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806 void* nmethod::operator new(size_t size, int nmethod_size) throw() { |
|
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807 // Not critical, may return null if there is too little continuous memory |
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808 return CodeCache::allocate(nmethod_size); |
| 0 | 809 } |
| 810 | |
| 811 nmethod::nmethod( | |
|
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812 Method* method, |
| 0 | 813 int nmethod_size, |
| 814 int compile_id, | |
| 815 int entry_bci, | |
| 816 CodeOffsets* offsets, | |
| 817 int orig_pc_offset, | |
| 818 DebugInformationRecorder* debug_info, | |
| 819 Dependencies* dependencies, | |
| 820 CodeBuffer *code_buffer, | |
| 821 int frame_size, | |
| 822 OopMapSet* oop_maps, | |
| 823 ExceptionHandlerTable* handler_table, | |
| 824 ImplicitExceptionTable* nul_chk_table, | |
| 825 AbstractCompiler* compiler, | |
| 826 int comp_level | |
| 827 ) | |
| 828 : CodeBlob("nmethod", code_buffer, sizeof(nmethod), | |
| 829 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, oop_maps), | |
| 2019 | 830 _native_receiver_sp_offset(in_ByteSize(-1)), |
| 831 _native_basic_lock_sp_offset(in_ByteSize(-1)) | |
| 0 | 832 { |
| 833 assert(debug_info->oop_recorder() == code_buffer->oop_recorder(), "shared OR"); | |
| 834 { | |
| 835 debug_only(No_Safepoint_Verifier nsv;) | |
| 836 assert_locked_or_safepoint(CodeCache_lock); | |
| 837 | |
|
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838 init_defaults(); |
| 0 | 839 _method = method; |
|
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840 _entry_bci = entry_bci; |
| 0 | 841 _compile_id = compile_id; |
| 842 _comp_level = comp_level; | |
| 843 _compiler = compiler; | |
| 844 _orig_pc_offset = orig_pc_offset; | |
| 1748 | 845 |
| 846 // Section offsets | |
|
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847 _consts_offset = content_offset() + code_buffer->total_offset_of(code_buffer->consts()); |
|
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848 _stub_offset = content_offset() + code_buffer->total_offset_of(code_buffer->stubs()); |
| 0 | 849 |
| 850 // Exception handler and deopt handler are in the stub section | |
|
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851 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must be set"); |
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852 assert(offsets->value(CodeOffsets::Deopt ) != -1, "must be set"); |
| 1748 | 853 _exception_offset = _stub_offset + offsets->value(CodeOffsets::Exceptions); |
| 854 _deoptimize_offset = _stub_offset + offsets->value(CodeOffsets::Deopt); | |
|
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855 if (offsets->value(CodeOffsets::DeoptMH) != -1) { |
|
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856 _deoptimize_mh_offset = _stub_offset + offsets->value(CodeOffsets::DeoptMH); |
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857 } else { |
|
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858 _deoptimize_mh_offset = -1; |
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859 } |
|
1378
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860 if (offsets->value(CodeOffsets::UnwindHandler) != -1) { |
| 1748 | 861 _unwind_handler_offset = code_offset() + offsets->value(CodeOffsets::UnwindHandler); |
|
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862 } else { |
| 1748 | 863 _unwind_handler_offset = -1; |
|
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864 } |
| 1748 | 865 |
|
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866 _oops_offset = data_offset(); |
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867 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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868 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
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869 |
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870 _scopes_pcs_offset = _scopes_data_offset + round_to(debug_info->data_size (), oopSize); |
| 0 | 871 _dependencies_offset = _scopes_pcs_offset + adjust_pcs_size(debug_info->pcs_size()); |
| 872 _handler_table_offset = _dependencies_offset + round_to(dependencies->size_in_bytes (), oopSize); | |
| 873 _nul_chk_table_offset = _handler_table_offset + round_to(handler_table->size_in_bytes(), oopSize); | |
| 874 _nmethod_end_offset = _nul_chk_table_offset + round_to(nul_chk_table->size_in_bytes(), oopSize); | |
| 875 | |
| 1748 | 876 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
| 877 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
| 878 _osr_entry_point = code_begin() + offsets->value(CodeOffsets::OSR_Entry); | |
| 0 | 879 _exception_cache = NULL; |
| 880 _pc_desc_cache.reset_to(scopes_pcs_begin()); | |
| 881 | |
| 882 // Copy contents of ScopeDescRecorder to nmethod | |
|
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883 code_buffer->copy_values_to(this); |
| 0 | 884 debug_info->copy_to(this); |
| 885 dependencies->copy_to(this); | |
|
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886 if (ScavengeRootsInCode && detect_scavenge_root_oops()) { |
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887 CodeCache::add_scavenge_root_nmethod(this); |
| 12080 | 888 Universe::heap()->register_nmethod(this); |
|
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889 } |
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890 debug_only(verify_scavenge_root_oops()); |
| 0 | 891 |
| 892 CodeCache::commit(this); | |
| 893 | |
| 894 // Copy contents of ExceptionHandlerTable to nmethod | |
| 895 handler_table->copy_to(this); | |
| 896 nul_chk_table->copy_to(this); | |
| 897 | |
| 898 // we use the information of entry points to find out if a method is | |
| 899 // static or non static | |
| 900 assert(compiler->is_c2() || | |
| 901 _method->is_static() == (entry_point() == _verified_entry_point), | |
| 902 " entry points must be same for static methods and vice versa"); | |
| 903 } | |
| 904 | |
|
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905 bool printnmethods = PrintNMethods |
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906 || CompilerOracle::should_print(_method) |
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907 || CompilerOracle::has_option_string(_method, "PrintNMethods"); |
| 0 | 908 if (printnmethods || PrintDebugInfo || PrintRelocations || PrintDependencies || PrintExceptionHandlers) { |
| 909 print_nmethod(printnmethods); | |
| 910 } | |
| 911 } | |
| 912 | |
| 913 | |
| 914 // Print a short set of xml attributes to identify this nmethod. The | |
| 915 // output should be embedded in some other element. | |
| 916 void nmethod::log_identity(xmlStream* log) const { | |
| 917 log->print(" compile_id='%d'", compile_id()); | |
| 918 const char* nm_kind = compile_kind(); | |
| 919 if (nm_kind != NULL) log->print(" compile_kind='%s'", nm_kind); | |
| 920 if (compiler() != NULL) { | |
| 921 log->print(" compiler='%s'", compiler()->name()); | |
| 922 } | |
| 1783 | 923 if (TieredCompilation) { |
| 924 log->print(" level='%d'", comp_level()); | |
| 925 } | |
| 0 | 926 } |
| 927 | |
| 928 | |
| 929 #define LOG_OFFSET(log, name) \ | |
| 930 if ((intptr_t)name##_end() - (intptr_t)name##_begin()) \ | |
| 931 log->print(" " XSTR(name) "_offset='%d'" , \ | |
| 932 (intptr_t)name##_begin() - (intptr_t)this) | |
| 933 | |
| 934 | |
| 935 void nmethod::log_new_nmethod() const { | |
| 936 if (LogCompilation && xtty != NULL) { | |
| 937 ttyLocker ttyl; | |
| 938 HandleMark hm; | |
| 939 xtty->begin_elem("nmethod"); | |
| 940 log_identity(xtty); | |
| 1748 | 941 xtty->print(" entry='" INTPTR_FORMAT "' size='%d'", code_begin(), size()); |
| 0 | 942 xtty->print(" address='" INTPTR_FORMAT "'", (intptr_t) this); |
| 943 | |
| 944 LOG_OFFSET(xtty, relocation); | |
|
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945 LOG_OFFSET(xtty, consts); |
| 1748 | 946 LOG_OFFSET(xtty, insts); |
| 0 | 947 LOG_OFFSET(xtty, stub); |
| 948 LOG_OFFSET(xtty, scopes_data); | |
| 949 LOG_OFFSET(xtty, scopes_pcs); | |
| 950 LOG_OFFSET(xtty, dependencies); | |
| 951 LOG_OFFSET(xtty, handler_table); | |
| 952 LOG_OFFSET(xtty, nul_chk_table); | |
| 953 LOG_OFFSET(xtty, oops); | |
| 954 | |
| 955 xtty->method(method()); | |
| 956 xtty->stamp(); | |
| 957 xtty->end_elem(); | |
| 958 } | |
| 959 } | |
| 960 | |
| 961 #undef LOG_OFFSET | |
| 962 | |
| 963 | |
| 964 // Print out more verbose output usually for a newly created nmethod. | |
|
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965 void nmethod::print_on(outputStream* st, const char* msg) const { |
| 0 | 966 if (st != NULL) { |
| 967 ttyLocker ttyl; | |
|
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968 if (WizardMode) { |
|
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969 CompileTask::print_compilation(st, this, msg, /*short_form:*/ true); |
|
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970 st->print_cr(" (" INTPTR_FORMAT ")", this); |
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971 } else { |
|
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972 CompileTask::print_compilation(st, this, msg, /*short_form:*/ false); |
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973 } |
| 0 | 974 } |
| 975 } | |
| 976 | |
| 977 | |
| 978 void nmethod::print_nmethod(bool printmethod) { | |
| 979 ttyLocker ttyl; // keep the following output all in one block | |
| 980 if (xtty != NULL) { | |
| 981 xtty->begin_head("print_nmethod"); | |
| 982 xtty->stamp(); | |
| 983 xtty->end_head(); | |
| 984 } | |
| 985 // print the header part first | |
| 986 print(); | |
| 987 // then print the requested information | |
| 988 if (printmethod) { | |
| 989 print_code(); | |
| 990 print_pcs(); | |
|
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991 if (oop_maps()) { |
|
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992 oop_maps()->print(); |
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993 } |
| 0 | 994 } |
| 995 if (PrintDebugInfo) { | |
| 996 print_scopes(); | |
| 997 } | |
| 998 if (PrintRelocations) { | |
| 999 print_relocations(); | |
| 1000 } | |
| 1001 if (PrintDependencies) { | |
| 1002 print_dependencies(); | |
| 1003 } | |
| 1004 if (PrintExceptionHandlers) { | |
| 1005 print_handler_table(); | |
| 1006 print_nul_chk_table(); | |
| 1007 } | |
| 1008 if (xtty != NULL) { | |
| 1009 xtty->tail("print_nmethod"); | |
| 1010 } | |
| 1011 } | |
| 1012 | |
| 1013 | |
|
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1014 // Promote one word from an assembly-time handle to a live embedded oop. |
|
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1015 inline void nmethod::initialize_immediate_oop(oop* dest, jobject handle) { |
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1016 if (handle == NULL || |
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1017 // As a special case, IC oops are initialized to 1 or -1. |
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1018 handle == (jobject) Universe::non_oop_word()) { |
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1019 (*dest) = (oop) handle; |
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1020 } else { |
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1021 (*dest) = JNIHandles::resolve_non_null(handle); |
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1022 } |
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1023 } |
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1024 |
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1025 |
|
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1026 // Have to have the same name because it's called by a template |
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1027 void nmethod::copy_values(GrowableArray<jobject>* array) { |
|
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1028 int length = array->length(); |
|
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1029 assert((address)(oops_begin() + length) <= (address)oops_end(), "oops big enough"); |
|
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1030 oop* dest = oops_begin(); |
|
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1031 for (int index = 0 ; index < length; index++) { |
|
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1032 initialize_immediate_oop(&dest[index], array->at(index)); |
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1033 } |
|
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1034 |
|
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1035 // Now we can fix up all the oops in the code. We need to do this |
|
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1036 // in the code because the assembler uses jobjects as placeholders. |
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1037 // The code and relocations have already been initialized by the |
|
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1038 // CodeBlob constructor, so it is valid even at this early point to |
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1039 // iterate over relocations and patch the code. |
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1040 fix_oop_relocations(NULL, NULL, /*initialize_immediates=*/ true); |
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1041 } |
|
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1042 |
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1043 void nmethod::copy_values(GrowableArray<Metadata*>* array) { |
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1044 int length = array->length(); |
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1045 assert((address)(metadata_begin() + length) <= (address)metadata_end(), "big enough"); |
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1046 Metadata** dest = metadata_begin(); |
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1047 for (int index = 0 ; index < length; index++) { |
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1048 dest[index] = array->at(index); |
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1049 } |
|
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1050 } |
|
1563
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1051 |
|
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1052 bool nmethod::is_at_poll_return(address pc) { |
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1053 RelocIterator iter(this, pc, pc+1); |
|
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1054 while (iter.next()) { |
|
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1055 if (iter.type() == relocInfo::poll_return_type) |
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1056 return true; |
|
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1057 } |
|
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1058 return false; |
|
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1059 } |
|
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1060 |
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1061 |
|
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1062 bool nmethod::is_at_poll_or_poll_return(address pc) { |
|
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1063 RelocIterator iter(this, pc, pc+1); |
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1064 while (iter.next()) { |
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1065 relocInfo::relocType t = iter.type(); |
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1066 if (t == relocInfo::poll_return_type || t == relocInfo::poll_type) |
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1067 return true; |
|
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1068 } |
|
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1069 return false; |
|
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1070 } |
|
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1071 |
|
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1072 |
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1073 void nmethod::fix_oop_relocations(address begin, address end, bool initialize_immediates) { |
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1074 // re-patch all oop-bearing instructions, just in case some oops moved |
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1075 RelocIterator iter(this, begin, end); |
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1076 while (iter.next()) { |
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1077 if (iter.type() == relocInfo::oop_type) { |
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1078 oop_Relocation* reloc = iter.oop_reloc(); |
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1079 if (initialize_immediates && reloc->oop_is_immediate()) { |
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1080 oop* dest = reloc->oop_addr(); |
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1081 initialize_immediate_oop(dest, (jobject) *dest); |
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1082 } |
|
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1083 // Refresh the oop-related bits of this instruction. |
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1084 reloc->fix_oop_relocation(); |
|
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1085 } else if (iter.type() == relocInfo::metadata_type) { |
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1086 metadata_Relocation* reloc = iter.metadata_reloc(); |
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1087 reloc->fix_metadata_relocation(); |
|
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1088 } |
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1089 } |
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1090 } |
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1091 |
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1092 |
|
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1093 void nmethod::verify_oop_relocations() { |
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1094 // Ensure sure that the code matches the current oop values |
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1095 RelocIterator iter(this, NULL, NULL); |
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1096 while (iter.next()) { |
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1097 if (iter.type() == relocInfo::oop_type) { |
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1098 oop_Relocation* reloc = iter.oop_reloc(); |
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1099 if (!reloc->oop_is_immediate()) { |
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1100 reloc->verify_oop_relocation(); |
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1101 } |
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1102 } |
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1103 } |
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1104 } |
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1105 |
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1106 |
| 0 | 1107 ScopeDesc* nmethod::scope_desc_at(address pc) { |
| 1108 PcDesc* pd = pc_desc_at(pc); | |
| 1109 guarantee(pd != NULL, "scope must be present"); | |
| 1110 return new ScopeDesc(this, pd->scope_decode_offset(), | |
|
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1111 pd->obj_decode_offset(), pd->should_reexecute(), |
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1112 pd->return_oop()); |
| 0 | 1113 } |
| 1114 | |
| 1115 | |
| 1116 void nmethod::clear_inline_caches() { | |
| 1117 assert(SafepointSynchronize::is_at_safepoint(), "cleaning of IC's only allowed at safepoint"); | |
| 1118 if (is_zombie()) { | |
| 1119 return; | |
| 1120 } | |
| 1121 | |
| 1122 RelocIterator iter(this); | |
| 1123 while (iter.next()) { | |
| 1124 iter.reloc()->clear_inline_cache(); | |
| 1125 } | |
| 1126 } | |
| 1127 | |
| 1128 | |
| 1129 void nmethod::cleanup_inline_caches() { | |
| 1130 | |
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1131 assert_locked_or_safepoint(CompiledIC_lock); |
| 0 | 1132 |
| 1133 // If the method is not entrant or zombie then a JMP is plastered over the | |
| 1134 // first few bytes. If an oop in the old code was there, that oop | |
| 1135 // should not get GC'd. Skip the first few bytes of oops on | |
| 1136 // not-entrant methods. | |
| 1137 address low_boundary = verified_entry_point(); | |
| 1138 if (!is_in_use()) { | |
| 1139 low_boundary += NativeJump::instruction_size; | |
| 1140 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
| 1141 // This means that the low_boundary is going to be a little too high. | |
| 1142 // This shouldn't matter, since oops of non-entrant methods are never used. | |
| 1143 // In fact, why are we bothering to look at oops in a non-entrant method?? | |
| 1144 } | |
| 1145 | |
| 1146 // Find all calls in an nmethod, and clear the ones that points to zombie methods | |
| 1147 ResourceMark rm; | |
| 1148 RelocIterator iter(this, low_boundary); | |
| 1149 while(iter.next()) { | |
| 1150 switch(iter.type()) { | |
| 1151 case relocInfo::virtual_call_type: | |
| 1152 case relocInfo::opt_virtual_call_type: { | |
| 1153 CompiledIC *ic = CompiledIC_at(iter.reloc()); | |
| 1154 // Ok, to lookup references to zombies here | |
| 1155 CodeBlob *cb = CodeCache::find_blob_unsafe(ic->ic_destination()); | |
| 1156 if( cb != NULL && cb->is_nmethod() ) { | |
| 1157 nmethod* nm = (nmethod*)cb; | |
| 1158 // Clean inline caches pointing to both zombie and not_entrant methods | |
| 1202 | 1159 if (!nm->is_in_use() || (nm->method()->code() != nm)) ic->set_to_clean(); |
| 0 | 1160 } |
| 1161 break; | |
| 1162 } | |
| 1163 case relocInfo::static_call_type: { | |
| 1164 CompiledStaticCall *csc = compiledStaticCall_at(iter.reloc()); | |
| 1165 CodeBlob *cb = CodeCache::find_blob_unsafe(csc->destination()); | |
| 1166 if( cb != NULL && cb->is_nmethod() ) { | |
| 1167 nmethod* nm = (nmethod*)cb; | |
| 1168 // Clean inline caches pointing to both zombie and not_entrant methods | |
| 1202 | 1169 if (!nm->is_in_use() || (nm->method()->code() != nm)) csc->set_to_clean(); |
| 0 | 1170 } |
| 1171 break; | |
| 1172 } | |
| 1173 } | |
| 1174 } | |
| 1175 } | |
| 1176 | |
|
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1177 // This is a private interface with the sweeper. |
| 0 | 1178 void nmethod::mark_as_seen_on_stack() { |
| 1179 assert(is_not_entrant(), "must be a non-entrant method"); | |
|
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1180 // Set the traversal mark to ensure that the sweeper does 2 |
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1181 // cleaning passes before moving to zombie. |
| 0 | 1182 set_stack_traversal_mark(NMethodSweeper::traversal_count()); |
| 1183 } | |
| 1184 | |
|
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1185 // Tell if a non-entrant method can be converted to a zombie (i.e., |
|
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1186 // there are no activations on the stack, not in use by the VM, |
|
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1187 // and not in use by the ServiceThread) |
| 0 | 1188 bool nmethod::can_not_entrant_be_converted() { |
| 1189 assert(is_not_entrant(), "must be a non-entrant method"); | |
| 1190 | |
| 1191 // Since the nmethod sweeper only does partial sweep the sweeper's traversal | |
| 1192 // count can be greater than the stack traversal count before it hits the | |
| 1193 // nmethod for the second time. | |
|
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1194 return stack_traversal_mark()+1 < NMethodSweeper::traversal_count() && |
|
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1195 !is_locked_by_vm(); |
| 0 | 1196 } |
| 1197 | |
| 1198 void nmethod::inc_decompile_count() { | |
| 1783 | 1199 if (!is_compiled_by_c2()) return; |
| 0 | 1200 // Could be gated by ProfileTraps, but do not bother... |
|
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1201 Method* m = method(); |
| 0 | 1202 if (m == NULL) return; |
|
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1203 MethodData* mdo = m->method_data(); |
| 0 | 1204 if (mdo == NULL) return; |
|
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1205 // There is a benign race here. See comments in methodData.hpp. |
| 0 | 1206 mdo->inc_decompile_count(); |
| 1207 } | |
| 1208 | |
| 1209 void nmethod::make_unloaded(BoolObjectClosure* is_alive, oop cause) { | |
| 1210 | |
| 1211 post_compiled_method_unload(); | |
| 1212 | |
| 1213 // Since this nmethod is being unloaded, make sure that dependencies | |
| 1214 // recorded in instanceKlasses get flushed and pass non-NULL closure to | |
| 1215 // indicate that this work is being done during a GC. | |
| 1216 assert(Universe::heap()->is_gc_active(), "should only be called during gc"); | |
| 1217 assert(is_alive != NULL, "Should be non-NULL"); | |
| 1218 // A non-NULL is_alive closure indicates that this is being called during GC. | |
| 1219 flush_dependencies(is_alive); | |
| 1220 | |
| 1221 // Break cycle between nmethod & method | |
| 1222 if (TraceClassUnloading && WizardMode) { | |
| 1223 tty->print_cr("[Class unloading: Making nmethod " INTPTR_FORMAT | |
|
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1224 " unloadable], Method*(" INTPTR_FORMAT |
| 0 | 1225 "), cause(" INTPTR_FORMAT ")", |
| 1226 this, (address)_method, (address)cause); | |
|
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1227 if (!Universe::heap()->is_gc_active()) |
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1228 cause->klass()->print(); |
| 0 | 1229 } |
| 941 | 1230 // Unlink the osr method, so we do not look this up again |
| 1231 if (is_osr_method()) { | |
| 1232 invalidate_osr_method(); | |
| 1233 } | |
|
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1234 // If _method is already NULL the Method* is about to be unloaded, |
| 0 | 1235 // so we don't have to break the cycle. Note that it is possible to |
|
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1236 // have the Method* live here, in case we unload the nmethod because |
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|
1237 // it is pointing to some oop (other than the Method*) being unloaded. |
| 0 | 1238 if (_method != NULL) { |
|
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1239 // OSR methods point to the Method*, but the Method* does not |
| 0 | 1240 // point back! |
| 1241 if (_method->code() == this) { | |
| 1242 _method->clear_code(); // Break a cycle | |
| 1243 } | |
| 1244 _method = NULL; // Clear the method of this dead nmethod | |
| 1245 } | |
| 1246 // Make the class unloaded - i.e., change state and notify sweeper | |
|
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1247 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint"); |
| 0 | 1248 if (is_in_use()) { |
| 1249 // Transitioning directly from live to unloaded -- so | |
| 1250 // we need to force a cache clean-up; remember this | |
| 1251 // for later on. | |
| 1252 CodeCache::set_needs_cache_clean(true); | |
| 1253 } | |
|
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1254 _state = unloaded; |
| 0 | 1255 |
|
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1256 // Log the unloading. |
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1257 log_state_change(); |
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1258 |
|
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1259 // The Method* is gone at this point |
| 0 | 1260 assert(_method == NULL, "Tautology"); |
| 1261 | |
|
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1262 set_osr_link(NULL); |
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1263 //set_scavenge_root_link(NULL); // done by prune_scavenge_root_nmethods |
| 0 | 1264 NMethodSweeper::notify(this); |
| 1265 } | |
| 1266 | |
| 1267 void nmethod::invalidate_osr_method() { | |
| 1268 assert(_entry_bci != InvocationEntryBci, "wrong kind of nmethod"); | |
| 1269 // Remove from list of active nmethods | |
| 1270 if (method() != NULL) | |
|
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1271 method()->method_holder()->remove_osr_nmethod(this); |
| 0 | 1272 // Set entry as invalid |
| 1273 _entry_bci = InvalidOSREntryBci; | |
| 1274 } | |
| 1275 | |
|
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1276 void nmethod::log_state_change() const { |
| 0 | 1277 if (LogCompilation) { |
| 1278 if (xtty != NULL) { | |
| 1279 ttyLocker ttyl; // keep the following output all in one block | |
|
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1280 if (_state == unloaded) { |
|
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1281 xtty->begin_elem("make_unloaded thread='" UINTX_FORMAT "'", |
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1282 os::current_thread_id()); |
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1283 } else { |
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1284 xtty->begin_elem("make_not_entrant thread='" UINTX_FORMAT "'%s", |
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1285 os::current_thread_id(), |
|
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1286 (_state == zombie ? " zombie='1'" : "")); |
|
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1287 } |
| 0 | 1288 log_identity(xtty); |
| 1289 xtty->stamp(); | |
| 1290 xtty->end_elem(); | |
| 1291 } | |
| 1292 } | |
|
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1293 if (PrintCompilation && _state != unloaded) { |
|
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|
1294 print_on(tty, _state == zombie ? "made zombie" : "made not entrant"); |
| 0 | 1295 } |
| 1296 } | |
| 1297 | |
| 1298 // Common functionality for both make_not_entrant and make_zombie | |
| 1141 | 1299 bool nmethod::make_not_entrant_or_zombie(unsigned int state) { |
| 0 | 1300 assert(state == zombie || state == not_entrant, "must be zombie or not_entrant"); |
|
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1301 assert(!is_zombie(), "should not already be a zombie"); |
| 0 | 1302 |
|
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1303 // Make sure neither the nmethod nor the method is flushed in case of a safepoint in code below. |
| 0 | 1304 nmethodLocker nml(this); |
|
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1305 methodHandle the_method(method()); |
| 1726 | 1306 No_Safepoint_Verifier nsv; |
| 0 | 1307 |
| 12080 | 1308 // during patching, depending on the nmethod state we must notify the GC that |
| 1309 // code has been unloaded, unregistering it. We cannot do this right while | |
| 1310 // holding the Patching_lock because we need to use the CodeCache_lock. This | |
| 1311 // would be prone to deadlocks. | |
| 1312 // This flag is used to remember whether we need to later lock and unregister. | |
| 1313 bool nmethod_needs_unregister = false; | |
| 1314 | |
| 0 | 1315 { |
|
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1316 // invalidate osr nmethod before acquiring the patching lock since |
|
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1317 // they both acquire leaf locks and we don't want a deadlock. |
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1318 // This logic is equivalent to the logic below for patching the |
|
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1319 // verified entry point of regular methods. |
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1320 if (is_osr_method()) { |
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1321 // this effectively makes the osr nmethod not entrant |
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1322 invalidate_osr_method(); |
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1323 } |
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1324 |
| 0 | 1325 // Enter critical section. Does not block for safepoint. |
| 1326 MutexLockerEx pl(Patching_lock, Mutex::_no_safepoint_check_flag); | |
|
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1327 |
|
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1328 if (_state == state) { |
|
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1329 // another thread already performed this transition so nothing |
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1330 // to do, but return false to indicate this. |
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1331 return false; |
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1332 } |
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1333 |
| 0 | 1334 // The caller can be calling the method statically or through an inline |
| 1335 // cache call. | |
|
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1336 if (!is_osr_method() && !is_not_entrant()) { |
| 0 | 1337 NativeJump::patch_verified_entry(entry_point(), verified_entry_point(), |
| 1338 SharedRuntime::get_handle_wrong_method_stub()); | |
| 1339 } | |
| 1340 | |
|
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1341 if (is_in_use()) { |
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1342 // It's a true state change, so mark the method as decompiled. |
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1343 // Do it only for transition from alive. |
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1344 inc_decompile_count(); |
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1345 } |
|
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1346 |
| 12080 | 1347 // If the state is becoming a zombie, signal to unregister the nmethod with |
| 1348 // the heap. | |
| 1349 // This nmethod may have already been unloaded during a full GC. | |
| 1350 if ((state == zombie) && !is_unloaded()) { | |
| 1351 nmethod_needs_unregister = true; | |
| 1352 } | |
| 1353 | |
| 0 | 1354 // Change state |
|
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1355 _state = state; |
|
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1356 |
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1357 // Log the transition once |
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1358 log_state_change(); |
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1359 |
|
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1360 // Remove nmethod from method. |
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1361 // We need to check if both the _code and _from_compiled_code_entry_point |
|
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1362 // refer to this nmethod because there is a race in setting these two fields |
|
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1363 // in Method* as seen in bugid 4947125. |
|
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1364 // If the vep() points to the zombie nmethod, the memory for the nmethod |
|
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1365 // could be flushed and the compiler and vtable stubs could still call |
|
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1366 // through it. |
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1367 if (method() != NULL && (method()->code() == this || |
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1368 method()->from_compiled_entry() == verified_entry_point())) { |
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1369 HandleMark hm; |
|
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1370 method()->clear_code(); |
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1371 } |
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1372 |
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1373 if (state == not_entrant) { |
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1374 mark_as_seen_on_stack(); |
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1375 } |
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1376 |
| 0 | 1377 } // leave critical region under Patching_lock |
| 1378 | |
|
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1379 // When the nmethod becomes zombie it is no longer alive so the |
|
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1380 // dependencies must be flushed. nmethods in the not_entrant |
|
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1381 // state will be flushed later when the transition to zombie |
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1382 // happens or they get unloaded. |
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1383 if (state == zombie) { |
| 1726 | 1384 { |
| 1385 // Flushing dependecies must be done before any possible | |
| 1386 // safepoint can sneak in, otherwise the oops used by the | |
| 1387 // dependency logic could have become stale. | |
| 1388 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
| 12080 | 1389 if (nmethod_needs_unregister) { |
| 1390 Universe::heap()->unregister_nmethod(this); | |
| 1391 } | |
| 1726 | 1392 flush_dependencies(NULL); |
| 1393 } | |
|
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1394 |
|
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1395 // zombie only - if a JVMTI agent has enabled the CompiledMethodUnload |
|
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1396 // event and it hasn't already been reported for this nmethod then |
|
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1397 // report it now. The event may have been reported earilier if the GC |
|
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1398 // marked it for unloading). JvmtiDeferredEventQueue support means |
|
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1399 // we no longer go to a safepoint here. |
|
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1400 post_compiled_method_unload(); |
| 1726 | 1401 |
| 1402 #ifdef ASSERT | |
| 1403 // It's no longer safe to access the oops section since zombie | |
| 1404 // nmethods aren't scanned for GC. | |
| 1405 _oops_are_stale = true; | |
| 1406 #endif | |
|
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1407 // the Method may be reclaimed by class unloading now that the |
|
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1408 // nmethod is in zombie state |
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1409 set_method(NULL); |
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1410 } else { |
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1411 assert(state == not_entrant, "other cases may need to be handled differently"); |
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1412 } |
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1413 |
| 0 | 1414 if (TraceCreateZombies) { |
| 1415 tty->print_cr("nmethod <" INTPTR_FORMAT "> code made %s", this, (state == not_entrant) ? "not entrant" : "zombie"); | |
| 1416 } | |
| 1417 | |
| 1418 // Make sweeper aware that there is a zombie method that needs to be removed | |
| 1419 NMethodSweeper::notify(this); | |
| 1420 | |
|
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1421 return true; |
| 0 | 1422 } |
| 1423 | |
| 1424 void nmethod::flush() { | |
| 1425 // Note that there are no valid oops in the nmethod anymore. | |
| 1426 assert(is_zombie() || (is_osr_method() && is_unloaded()), "must be a zombie method"); | |
| 1427 assert(is_marked_for_reclamation() || (is_osr_method() && is_unloaded()), "must be marked for reclamation"); | |
| 1428 | |
| 1429 assert (!is_locked_by_vm(), "locked methods shouldn't be flushed"); | |
|
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1430 assert_locked_or_safepoint(CodeCache_lock); |
| 0 | 1431 |
| 1432 // completely deallocate this method | |
|
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1433 Events::log(JavaThread::current(), "flushing nmethod " INTPTR_FORMAT, this); |
| 0 | 1434 if (PrintMethodFlushing) { |
| 1202 | 1435 tty->print_cr("*flushing nmethod %3d/" INTPTR_FORMAT ". Live blobs:" UINT32_FORMAT "/Free CodeCache:" SIZE_FORMAT "Kb", |
| 1436 _compile_id, this, CodeCache::nof_blobs(), CodeCache::unallocated_capacity()/1024); | |
| 0 | 1437 } |
| 1438 | |
| 1439 // We need to deallocate any ExceptionCache data. | |
| 1440 // Note that we do not need to grab the nmethod lock for this, it | |
| 1441 // better be thread safe if we're disposing of it! | |
| 1442 ExceptionCache* ec = exception_cache(); | |
| 1443 set_exception_cache(NULL); | |
| 1444 while(ec != NULL) { | |
| 1445 ExceptionCache* next = ec->next(); | |
| 1446 delete ec; | |
| 1447 ec = next; | |
| 1448 } | |
| 1449 | |
|
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1450 if (on_scavenge_root_list()) { |
|
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1451 CodeCache::drop_scavenge_root_nmethod(this); |
|
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1452 } |
|
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1453 |
| 1202 | 1454 if (is_speculatively_disconnected()) { |
| 1455 CodeCache::remove_saved_code(this); | |
| 1456 } | |
| 1457 | |
| 1692 | 1458 #ifdef SHARK |
|
1845
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|
1459 ((SharkCompiler *) compiler())->free_compiled_method(insts_begin()); |
| 1692 | 1460 #endif // SHARK |
| 1461 | |
| 0 | 1462 ((CodeBlob*)(this))->flush(); |
| 1463 | |
| 1464 CodeCache::free(this); | |
| 1465 } | |
| 1466 | |
| 1467 | |
| 1468 // | |
| 1469 // Notify all classes this nmethod is dependent on that it is no | |
| 1470 // longer dependent. This should only be called in two situations. | |
| 1471 // First, when a nmethod transitions to a zombie all dependents need | |
| 1472 // to be clear. Since zombification happens at a safepoint there's no | |
| 1473 // synchronization issues. The second place is a little more tricky. | |
| 1474 // During phase 1 of mark sweep class unloading may happen and as a | |
| 1475 // result some nmethods may get unloaded. In this case the flushing | |
| 1476 // of dependencies must happen during phase 1 since after GC any | |
| 1477 // dependencies in the unloaded nmethod won't be updated, so | |
| 1478 // traversing the dependency information in unsafe. In that case this | |
| 1479 // function is called with a non-NULL argument and this function only | |
| 1480 // notifies instanceKlasses that are reachable | |
| 1481 | |
| 1482 void nmethod::flush_dependencies(BoolObjectClosure* is_alive) { | |
|
1538
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|
1483 assert_locked_or_safepoint(CodeCache_lock); |
| 0 | 1484 assert(Universe::heap()->is_gc_active() == (is_alive != NULL), |
| 1485 "is_alive is non-NULL if and only if we are called during GC"); | |
| 1486 if (!has_flushed_dependencies()) { | |
| 1487 set_has_flushed_dependencies(); | |
| 1488 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
|
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1489 Klass* klass = deps.context_type(); |
| 0 | 1490 if (klass == NULL) continue; // ignore things like evol_method |
| 1491 | |
| 1492 // During GC the is_alive closure is non-NULL, and is used to | |
| 1493 // determine liveness of dependees that need to be updated. | |
|
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1494 if (is_alive == NULL || klass->is_loader_alive(is_alive)) { |
|
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1495 InstanceKlass::cast(klass)->remove_dependent_nmethod(this); |
| 0 | 1496 } |
| 1497 } | |
| 1498 } | |
| 1499 } | |
| 1500 | |
| 1501 | |
| 1502 // If this oop is not live, the nmethod can be unloaded. | |
|
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|
1503 bool nmethod::can_unload(BoolObjectClosure* is_alive, oop* root, bool unloading_occurred) { |
| 0 | 1504 assert(root != NULL, "just checking"); |
| 1505 oop obj = *root; | |
| 1506 if (obj == NULL || is_alive->do_object_b(obj)) { | |
| 1507 return false; | |
| 1508 } | |
|
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1509 |
|
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1510 // If ScavengeRootsInCode is true, an nmethod might be unloaded |
|
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|
1511 // simply because one of its constant oops has gone dead. |
|
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1512 // No actual classes need to be unloaded in order for this to occur. |
|
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|
1513 assert(unloading_occurred || ScavengeRootsInCode, "Inconsistency in unloading"); |
| 0 | 1514 make_unloaded(is_alive, obj); |
| 1515 return true; | |
| 1516 } | |
| 1517 | |
| 1518 // ------------------------------------------------------------------ | |
| 1519 // post_compiled_method_load_event | |
| 1520 // new method for install_code() path | |
| 1521 // Transfer information from compilation to jvmti | |
| 1522 void nmethod::post_compiled_method_load_event() { | |
| 1523 | |
|
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1524 Method* moop = method(); |
| 4006 | 1525 #ifndef USDT2 |
| 0 | 1526 HS_DTRACE_PROBE8(hotspot, compiled__method__load, |
| 1527 moop->klass_name()->bytes(), | |
| 1528 moop->klass_name()->utf8_length(), | |
| 1529 moop->name()->bytes(), | |
| 1530 moop->name()->utf8_length(), | |
| 1531 moop->signature()->bytes(), | |
| 1532 moop->signature()->utf8_length(), | |
| 1748 | 1533 insts_begin(), insts_size()); |
| 4006 | 1534 #else /* USDT2 */ |
| 1535 HOTSPOT_COMPILED_METHOD_LOAD( | |
| 1536 (char *) moop->klass_name()->bytes(), | |
| 1537 moop->klass_name()->utf8_length(), | |
| 1538 (char *) moop->name()->bytes(), | |
| 1539 moop->name()->utf8_length(), | |
| 1540 (char *) moop->signature()->bytes(), | |
| 1541 moop->signature()->utf8_length(), | |
| 1542 insts_begin(), insts_size()); | |
| 1543 #endif /* USDT2 */ | |
| 0 | 1544 |
|
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1545 if (JvmtiExport::should_post_compiled_method_load() || |
|
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|
1546 JvmtiExport::should_post_compiled_method_unload()) { |
|
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|
1547 get_and_cache_jmethod_id(); |
|
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|
1548 } |
|
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1549 |
| 0 | 1550 if (JvmtiExport::should_post_compiled_method_load()) { |
|
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1551 // Let the Service thread (which is a real Java thread) post the event |
|
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1552 MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag); |
|
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1553 JvmtiDeferredEventQueue::enqueue( |
|
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1554 JvmtiDeferredEvent::compiled_method_load_event(this)); |
| 0 | 1555 } |
| 1556 } | |
| 1557 | |
|
1616
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|
1558 jmethodID nmethod::get_and_cache_jmethod_id() { |
|
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|
1559 if (_jmethod_id == NULL) { |
|
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|
1560 // Cache the jmethod_id since it can no longer be looked up once the |
|
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|
1561 // method itself has been marked for unloading. |
|
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|
1562 _jmethod_id = method()->jmethod_id(); |
|
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|
1563 } |
|
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parents:
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|
1564 return _jmethod_id; |
|
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|
1565 } |
|
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|
1566 |
| 0 | 1567 void nmethod::post_compiled_method_unload() { |
|
1577
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diff
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|
1568 if (unload_reported()) { |
|
852d0157c696
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diff
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|
1569 // During unloading we transition to unloaded and then to zombie |
|
852d0157c696
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|
1570 // and the unloading is reported during the first transition. |
|
852d0157c696
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|
1571 return; |
|
852d0157c696
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diff
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|
1572 } |
|
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6956931: assert(SafepointSynchronize::is_at_safepoint()) failed: must be executed at a safepoint
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parents:
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diff
changeset
|
1573 |
| 0 | 1574 assert(_method != NULL && !is_unloaded(), "just checking"); |
| 1575 DTRACE_METHOD_UNLOAD_PROBE(method()); | |
| 1576 | |
| 1577 // If a JVMTI agent has enabled the CompiledMethodUnload event then | |
|
1616
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never
parents:
1602
diff
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|
1578 // post the event. Sometime later this nmethod will be made a zombie |
|
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1579 // by the sweeper but the Method* will not be valid at that point. |
|
1616
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parents:
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diff
changeset
|
1580 // If the _jmethod_id is null then no load event was ever requested |
|
38e8278318ca
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parents:
1602
diff
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|
1581 // so don't bother posting the unload. The main reason for this is |
|
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|
1582 // that the jmethodID is a weak reference to the Method* so if |
|
1616
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diff
changeset
|
1583 // it's being unloaded there's no way to look it up since the weak |
|
38e8278318ca
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|
1584 // ref will have been cleared. |
|
38e8278318ca
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parents:
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diff
changeset
|
1585 if (_jmethod_id != NULL && JvmtiExport::should_post_compiled_method_unload()) { |
| 0 | 1586 assert(!unload_reported(), "already unloaded"); |
|
2195
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|
1587 JvmtiDeferredEvent event = |
|
2342
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
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parents:
2321
diff
changeset
|
1588 JvmtiDeferredEvent::compiled_method_unload_event(this, |
|
2195
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|
1589 _jmethod_id, insts_begin()); |
|
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|
1590 if (SafepointSynchronize::is_at_safepoint()) { |
|
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|
1591 // Don't want to take the queueing lock. Add it as pending and |
|
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|
1592 // it will get enqueued later. |
|
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|
1593 JvmtiDeferredEventQueue::add_pending_event(event); |
|
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|
1594 } else { |
|
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|
1595 MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag); |
|
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|
1596 JvmtiDeferredEventQueue::enqueue(event); |
|
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|
1597 } |
| 0 | 1598 } |
| 1599 | |
| 1600 // The JVMTI CompiledMethodUnload event can be enabled or disabled at | |
| 1601 // any time. As the nmethod is being unloaded now we mark it has | |
| 1602 // having the unload event reported - this will ensure that we don't | |
| 1603 // attempt to report the event in the unlikely scenario where the | |
| 1604 // event is enabled at the time the nmethod is made a zombie. | |
| 1605 set_unload_reported(); | |
| 1606 } | |
| 1607 | |
| 1608 // This is called at the end of the strong tracing/marking phase of a | |
| 1609 // GC to unload an nmethod if it contains otherwise unreachable | |
| 1610 // oops. | |
| 1611 | |
|
6787
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7200470: KeepAliveClosure not needed in CodeCache::do_unloading
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|
1612 void nmethod::do_unloading(BoolObjectClosure* is_alive, bool unloading_occurred) { |
| 0 | 1613 // Make sure the oop's ready to receive visitors |
| 1614 assert(!is_zombie() && !is_unloaded(), | |
| 1615 "should not call follow on zombie or unloaded nmethod"); | |
| 1616 | |
| 1617 // If the method is not entrant then a JMP is plastered over the | |
| 1618 // first few bytes. If an oop in the old code was there, that oop | |
| 1619 // should not get GC'd. Skip the first few bytes of oops on | |
| 1620 // not-entrant methods. | |
| 1621 address low_boundary = verified_entry_point(); | |
| 1622 if (is_not_entrant()) { | |
| 1623 low_boundary += NativeJump::instruction_size; | |
| 1624 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
| 1625 // (See comment above.) | |
| 1626 } | |
| 1627 | |
| 1628 // The RedefineClasses() API can cause the class unloading invariant | |
| 1629 // to no longer be true. See jvmtiExport.hpp for details. | |
| 1630 // Also, leave a debugging breadcrumb in local flag. | |
| 1631 bool a_class_was_redefined = JvmtiExport::has_redefined_a_class(); | |
| 1632 if (a_class_was_redefined) { | |
| 1633 // This set of the unloading_occurred flag is done before the | |
| 1634 // call to post_compiled_method_unload() so that the unloading | |
| 1635 // of this nmethod is reported. | |
| 1636 unloading_occurred = true; | |
| 1637 } | |
| 1638 | |
| 1639 // Exception cache | |
| 1640 ExceptionCache* ec = exception_cache(); | |
| 1641 while (ec != NULL) { | |
|
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|
1642 Klass* ex_klass = ec->exception_type(); |
| 0 | 1643 ExceptionCache* next_ec = ec->next(); |
|
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|
1644 if (ex_klass != NULL && !ex_klass->is_loader_alive(is_alive)) { |
| 0 | 1645 remove_from_exception_cache(ec); |
| 1646 } | |
| 1647 ec = next_ec; | |
| 1648 } | |
| 1649 | |
| 1650 // If class unloading occurred we first iterate over all inline caches and | |
| 1651 // clear ICs where the cached oop is referring to an unloaded klass or method. | |
| 1652 // The remaining live cached oops will be traversed in the relocInfo::oop_type | |
| 1653 // iteration below. | |
| 1654 if (unloading_occurred) { | |
| 1655 RelocIterator iter(this, low_boundary); | |
| 1656 while(iter.next()) { | |
| 1657 if (iter.type() == relocInfo::virtual_call_type) { | |
| 1658 CompiledIC *ic = CompiledIC_at(iter.reloc()); | |
|
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|
1659 if (ic->is_icholder_call()) { |
| 0 | 1660 // The only exception is compiledICHolder oops which may |
| 1661 // yet be marked below. (We check this further below). | |
|
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|
1662 CompiledICHolder* cichk_oop = ic->cached_icholder(); |
|
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1663 if (cichk_oop->holder_method()->method_holder()->is_loader_alive(is_alive) && |
|
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|
1664 cichk_oop->holder_klass()->is_loader_alive(is_alive)) { |
| 0 | 1665 continue; |
| 1666 } | |
|
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|
1667 } else { |
|
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|
1668 Metadata* ic_oop = ic->cached_metadata(); |
|
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|
1669 if (ic_oop != NULL) { |
|
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|
1670 if (ic_oop->is_klass()) { |
|
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|
1671 if (((Klass*)ic_oop)->is_loader_alive(is_alive)) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
1672 continue; |
|
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|
1673 } |
|
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1674 } else if (ic_oop->is_method()) { |
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1675 if (((Method*)ic_oop)->method_holder()->is_loader_alive(is_alive)) { |
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1676 continue; |
|
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1677 } |
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1678 } else { |
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1679 ShouldNotReachHere(); |
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1680 } |
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1681 } |
| 0 | 1682 } |
| 1683 ic->set_to_clean(); | |
| 1684 } | |
| 1685 } | |
| 1686 } | |
| 1687 | |
| 1688 // Compiled code | |
|
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1689 { |
| 0 | 1690 RelocIterator iter(this, low_boundary); |
| 1691 while (iter.next()) { | |
| 1692 if (iter.type() == relocInfo::oop_type) { | |
| 1693 oop_Relocation* r = iter.oop_reloc(); | |
| 1694 // In this loop, we must only traverse those oops directly embedded in | |
| 1695 // the code. Other oops (oop_index>0) are seen as part of scopes_oops. | |
| 1696 assert(1 == (r->oop_is_immediate()) + | |
| 1697 (r->oop_addr() >= oops_begin() && r->oop_addr() < oops_end()), | |
| 1698 "oop must be found in exactly one place"); | |
| 1699 if (r->oop_is_immediate() && r->oop_value() != NULL) { | |
|
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1700 if (can_unload(is_alive, r->oop_addr(), unloading_occurred)) { |
| 0 | 1701 return; |
| 1702 } | |
| 1703 } | |
| 1704 } | |
| 1705 } | |
|
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1706 } |
| 0 | 1707 |
| 1708 | |
| 1709 // Scopes | |
| 1710 for (oop* p = oops_begin(); p < oops_end(); p++) { | |
| 1711 if (*p == Universe::non_oop_word()) continue; // skip non-oops | |
|
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1712 if (can_unload(is_alive, p, unloading_occurred)) { |
| 0 | 1713 return; |
| 1714 } | |
| 1715 } | |
| 1716 | |
|
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1717 // Ensure that all metadata is still alive |
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1718 verify_metadata_loaders(low_boundary, is_alive); |
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1719 } |
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1720 |
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1721 #ifdef ASSERT |
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1722 |
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1723 class CheckClass : AllStatic { |
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1724 static BoolObjectClosure* _is_alive; |
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1725 |
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1726 // Check class_loader is alive for this bit of metadata. |
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1727 static void check_class(Metadata* md) { |
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1728 Klass* klass = NULL; |
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1729 if (md->is_klass()) { |
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1730 klass = ((Klass*)md); |
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1731 } else if (md->is_method()) { |
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1732 klass = ((Method*)md)->method_holder(); |
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1733 } else if (md->is_methodData()) { |
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1734 klass = ((MethodData*)md)->method()->method_holder(); |
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1735 } else { |
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1736 md->print(); |
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1737 ShouldNotReachHere(); |
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1738 } |
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1739 assert(klass->is_loader_alive(_is_alive), "must be alive"); |
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1740 } |
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1741 public: |
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1742 static void do_check_class(BoolObjectClosure* is_alive, nmethod* nm) { |
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1743 assert(SafepointSynchronize::is_at_safepoint(), "this is only ok at safepoint"); |
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1744 _is_alive = is_alive; |
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1745 nm->metadata_do(check_class); |
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1746 } |
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1747 }; |
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1748 |
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1749 // This is called during a safepoint so can use static data |
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1750 BoolObjectClosure* CheckClass::_is_alive = NULL; |
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1751 #endif // ASSERT |
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1752 |
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1753 |
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1754 // Processing of oop references should have been sufficient to keep |
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1755 // all strong references alive. Any weak references should have been |
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1756 // cleared as well. Visit all the metadata and ensure that it's |
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1757 // really alive. |
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1758 void nmethod::verify_metadata_loaders(address low_boundary, BoolObjectClosure* is_alive) { |
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1759 #ifdef ASSERT |
| 0 | 1760 RelocIterator iter(this, low_boundary); |
| 1761 while (iter.next()) { | |
|
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1762 // static_stub_Relocations may have dangling references to |
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1763 // Method*s so trim them out here. Otherwise it looks like |
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1764 // compiled code is maintaining a link to dead metadata. |
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1765 address static_call_addr = NULL; |
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1766 if (iter.type() == relocInfo::opt_virtual_call_type) { |
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1767 CompiledIC* cic = CompiledIC_at(iter.reloc()); |
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1768 if (!cic->is_call_to_interpreted()) { |
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1769 static_call_addr = iter.addr(); |
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1770 } |
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1771 } else if (iter.type() == relocInfo::static_call_type) { |
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1772 CompiledStaticCall* csc = compiledStaticCall_at(iter.reloc()); |
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1773 if (!csc->is_call_to_interpreted()) { |
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1774 static_call_addr = iter.addr(); |
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1775 } |
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1776 } |
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1777 if (static_call_addr != NULL) { |
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1778 RelocIterator sciter(this, low_boundary); |
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1779 while (sciter.next()) { |
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1780 if (sciter.type() == relocInfo::static_stub_type && |
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1781 sciter.static_stub_reloc()->static_call() == static_call_addr) { |
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1782 sciter.static_stub_reloc()->clear_inline_cache(); |
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1783 } |
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1784 } |
| 0 | 1785 } |
| 1786 } | |
|
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1787 // Check that the metadata embedded in the nmethod is alive |
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1788 CheckClass::do_check_class(is_alive, this); |
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1789 #endif |
| 0 | 1790 } |
| 1791 | |
|
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1792 |
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1793 // Iterate over metadata calling this function. Used by RedefineClasses |
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1794 void nmethod::metadata_do(void f(Metadata*)) { |
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1795 address low_boundary = verified_entry_point(); |
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1796 if (is_not_entrant()) { |
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1797 low_boundary += NativeJump::instruction_size; |
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1798 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. |
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1799 // (See comment above.) |
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1800 } |
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1801 { |
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1802 // Visit all immediate references that are embedded in the instruction stream. |
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1803 RelocIterator iter(this, low_boundary); |
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1804 while (iter.next()) { |
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1805 if (iter.type() == relocInfo::metadata_type ) { |
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1806 metadata_Relocation* r = iter.metadata_reloc(); |
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1807 // In this lmetadata, we must only follow those metadatas directly embedded in |
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1808 // the code. Other metadatas (oop_index>0) are seen as part of |
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1809 // the metadata section below. |
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1810 assert(1 == (r->metadata_is_immediate()) + |
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1811 (r->metadata_addr() >= metadata_begin() && r->metadata_addr() < metadata_end()), |
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1812 "metadata must be found in exactly one place"); |
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1813 if (r->metadata_is_immediate() && r->metadata_value() != NULL) { |
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1814 Metadata* md = r->metadata_value(); |
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1815 f(md); |
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1816 } |
|
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1817 } else if (iter.type() == relocInfo::virtual_call_type) { |
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1818 // Check compiledIC holders associated with this nmethod |
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1819 CompiledIC *ic = CompiledIC_at(iter.reloc()); |
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1820 if (ic->is_icholder_call()) { |
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1821 CompiledICHolder* cichk = ic->cached_icholder(); |
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1822 f(cichk->holder_method()); |
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1823 f(cichk->holder_klass()); |
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1824 } else { |
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1825 Metadata* ic_oop = ic->cached_metadata(); |
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1826 if (ic_oop != NULL) { |
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1827 f(ic_oop); |
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1828 } |
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1829 } |
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1830 } |
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1831 } |
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1832 } |
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1833 |
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1834 // Visit the metadata section |
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1835 for (Metadata** p = metadata_begin(); p < metadata_end(); p++) { |
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1836 if (*p == Universe::non_oop_word() || *p == NULL) continue; // skip non-oops |
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1837 Metadata* md = *p; |
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1838 f(md); |
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1839 } |
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1840 |
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1841 // Call function Method*, not embedded in these other places. |
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1842 if (_method != NULL) f(_method); |
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1843 } |
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1844 |
| 12080 | 1845 void nmethod::oops_do(OopClosure* f, bool allow_zombie) { |
| 0 | 1846 // make sure the oops ready to receive visitors |
| 12080 | 1847 assert(allow_zombie || !is_zombie(), "should not call follow on zombie nmethod"); |
| 1848 assert(!is_unloaded(), "should not call follow on unloaded nmethod"); | |
| 0 | 1849 |
| 1850 // If the method is not entrant or zombie then a JMP is plastered over the | |
| 1851 // first few bytes. If an oop in the old code was there, that oop | |
| 1852 // should not get GC'd. Skip the first few bytes of oops on | |
| 1853 // not-entrant methods. | |
| 1854 address low_boundary = verified_entry_point(); | |
| 1855 if (is_not_entrant()) { | |
| 1856 low_boundary += NativeJump::instruction_size; | |
| 1857 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
| 1858 // (See comment above.) | |
| 1859 } | |
| 1860 | |
| 1861 RelocIterator iter(this, low_boundary); | |
| 941 | 1862 |
| 0 | 1863 while (iter.next()) { |
| 1864 if (iter.type() == relocInfo::oop_type ) { | |
| 1865 oop_Relocation* r = iter.oop_reloc(); | |
| 1866 // In this loop, we must only follow those oops directly embedded in | |
| 1867 // the code. Other oops (oop_index>0) are seen as part of scopes_oops. | |
| 941 | 1868 assert(1 == (r->oop_is_immediate()) + |
| 1869 (r->oop_addr() >= oops_begin() && r->oop_addr() < oops_end()), | |
| 1870 "oop must be found in exactly one place"); | |
| 0 | 1871 if (r->oop_is_immediate() && r->oop_value() != NULL) { |
| 1872 f->do_oop(r->oop_addr()); | |
| 1873 } | |
| 1874 } | |
| 1875 } | |
| 1876 | |
| 1877 // Scopes | |
|
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1878 // This includes oop constants not inlined in the code stream. |
| 0 | 1879 for (oop* p = oops_begin(); p < oops_end(); p++) { |
| 1880 if (*p == Universe::non_oop_word()) continue; // skip non-oops | |
| 1881 f->do_oop(p); | |
| 1882 } | |
| 1883 } | |
| 1884 | |
|
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1885 #define NMETHOD_SENTINEL ((nmethod*)badAddress) |
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1886 |
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1887 nmethod* volatile nmethod::_oops_do_mark_nmethods; |
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1888 |
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1889 // An nmethod is "marked" if its _mark_link is set non-null. |
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1890 // Even if it is the end of the linked list, it will have a non-null link value, |
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1891 // as long as it is on the list. |
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1892 // This code must be MP safe, because it is used from parallel GC passes. |
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1893 bool nmethod::test_set_oops_do_mark() { |
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1894 assert(nmethod::oops_do_marking_is_active(), "oops_do_marking_prologue must be called"); |
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1895 nmethod* observed_mark_link = _oops_do_mark_link; |
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1896 if (observed_mark_link == NULL) { |
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1897 // Claim this nmethod for this thread to mark. |
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1898 observed_mark_link = (nmethod*) |
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1899 Atomic::cmpxchg_ptr(NMETHOD_SENTINEL, &_oops_do_mark_link, NULL); |
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1900 if (observed_mark_link == NULL) { |
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1901 |
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1902 // Atomically append this nmethod (now claimed) to the head of the list: |
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1903 nmethod* observed_mark_nmethods = _oops_do_mark_nmethods; |
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1904 for (;;) { |
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1905 nmethod* required_mark_nmethods = observed_mark_nmethods; |
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1906 _oops_do_mark_link = required_mark_nmethods; |
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1907 observed_mark_nmethods = (nmethod*) |
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1908 Atomic::cmpxchg_ptr(this, &_oops_do_mark_nmethods, required_mark_nmethods); |
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1909 if (observed_mark_nmethods == required_mark_nmethods) |
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1910 break; |
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1911 } |
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1912 // Mark was clear when we first saw this guy. |
|
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1913 NOT_PRODUCT(if (TraceScavenge) print_on(tty, "oops_do, mark")); |
|
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1914 return false; |
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1915 } |
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1916 } |
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1917 // On fall through, another racing thread marked this nmethod before we did. |
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1918 return true; |
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1919 } |
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1920 |
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1921 void nmethod::oops_do_marking_prologue() { |
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1922 NOT_PRODUCT(if (TraceScavenge) tty->print_cr("[oops_do_marking_prologue")); |
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1923 assert(_oops_do_mark_nmethods == NULL, "must not call oops_do_marking_prologue twice in a row"); |
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1924 // We use cmpxchg_ptr instead of regular assignment here because the user |
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1925 // may fork a bunch of threads, and we need them all to see the same state. |
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1926 void* observed = Atomic::cmpxchg_ptr(NMETHOD_SENTINEL, &_oops_do_mark_nmethods, NULL); |
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1927 guarantee(observed == NULL, "no races in this sequential code"); |
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1928 } |
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1929 |
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1930 void nmethod::oops_do_marking_epilogue() { |
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1931 assert(_oops_do_mark_nmethods != NULL, "must not call oops_do_marking_epilogue twice in a row"); |
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1932 nmethod* cur = _oops_do_mark_nmethods; |
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1933 while (cur != NMETHOD_SENTINEL) { |
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1934 assert(cur != NULL, "not NULL-terminated"); |
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1935 nmethod* next = cur->_oops_do_mark_link; |
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1936 cur->_oops_do_mark_link = NULL; |
|
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1937 cur->fix_oop_relocations(); |
|
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1938 NOT_PRODUCT(if (TraceScavenge) cur->print_on(tty, "oops_do, unmark")); |
|
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1939 cur = next; |
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1940 } |
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1941 void* required = _oops_do_mark_nmethods; |
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1942 void* observed = Atomic::cmpxchg_ptr(NULL, &_oops_do_mark_nmethods, required); |
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1943 guarantee(observed == required, "no races in this sequential code"); |
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1944 NOT_PRODUCT(if (TraceScavenge) tty->print_cr("oops_do_marking_epilogue]")); |
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1945 } |
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1946 |
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1947 class DetectScavengeRoot: public OopClosure { |
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1948 bool _detected_scavenge_root; |
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1949 public: |
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1950 DetectScavengeRoot() : _detected_scavenge_root(false) |
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1951 { NOT_PRODUCT(_print_nm = NULL); } |
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1952 bool detected_scavenge_root() { return _detected_scavenge_root; } |
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1953 virtual void do_oop(oop* p) { |
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1954 if ((*p) != NULL && (*p)->is_scavengable()) { |
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1955 NOT_PRODUCT(maybe_print(p)); |
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1956 _detected_scavenge_root = true; |
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1957 } |
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1958 } |
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1959 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
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1960 |
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1961 #ifndef PRODUCT |
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1962 nmethod* _print_nm; |
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1963 void maybe_print(oop* p) { |
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1964 if (_print_nm == NULL) return; |
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1965 if (!_detected_scavenge_root) _print_nm->print_on(tty, "new scavenge root"); |
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1966 tty->print_cr(""PTR_FORMAT"[offset=%d] detected scavengable oop "PTR_FORMAT" (found at "PTR_FORMAT")", |
|
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1967 _print_nm, (int)((intptr_t)p - (intptr_t)_print_nm), |
|
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1968 (void *)(*p), (intptr_t)p); |
|
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1969 (*p)->print(); |
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1970 } |
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1971 #endif //PRODUCT |
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1972 }; |
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1973 |
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1974 bool nmethod::detect_scavenge_root_oops() { |
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1975 DetectScavengeRoot detect_scavenge_root; |
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1976 NOT_PRODUCT(if (TraceScavenge) detect_scavenge_root._print_nm = this); |
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1977 oops_do(&detect_scavenge_root); |
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1978 return detect_scavenge_root.detected_scavenge_root(); |
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1979 } |
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1980 |
| 0 | 1981 // Method that knows how to preserve outgoing arguments at call. This method must be |
| 1982 // called with a frame corresponding to a Java invoke | |
| 1983 void nmethod::preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { | |
| 1692 | 1984 #ifndef SHARK |
| 0 | 1985 if (!method()->is_native()) { |
| 1986 SimpleScopeDesc ssd(this, fr.pc()); | |
| 2142 | 1987 Bytecode_invoke call(ssd.method(), ssd.bci()); |
| 10390 | 1988 bool has_receiver = call.has_receiver(); |
| 1989 bool has_appendix = call.has_appendix(); | |
|
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1990 Symbol* signature = call.signature(); |
| 10390 | 1991 fr.oops_compiled_arguments_do(signature, has_receiver, has_appendix, reg_map, f); |
| 0 | 1992 } |
| 1692 | 1993 #endif // !SHARK |
| 0 | 1994 } |
| 1995 | |
| 1996 | |
| 1997 oop nmethod::embeddedOop_at(u_char* p) { | |
|
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1998 RelocIterator iter(this, p, p + 1); |
| 0 | 1999 while (iter.next()) |
| 2000 if (iter.type() == relocInfo::oop_type) { | |
| 2001 return iter.oop_reloc()->oop_value(); | |
| 2002 } | |
| 2003 return NULL; | |
| 2004 } | |
| 2005 | |
| 2006 | |
| 2007 inline bool includes(void* p, void* from, void* to) { | |
| 2008 return from <= p && p < to; | |
| 2009 } | |
| 2010 | |
| 2011 | |
| 2012 void nmethod::copy_scopes_pcs(PcDesc* pcs, int count) { | |
| 2013 assert(count >= 2, "must be sentinel values, at least"); | |
| 2014 | |
| 2015 #ifdef ASSERT | |
| 2016 // must be sorted and unique; we do a binary search in find_pc_desc() | |
| 2017 int prev_offset = pcs[0].pc_offset(); | |
| 2018 assert(prev_offset == PcDesc::lower_offset_limit, | |
| 2019 "must start with a sentinel"); | |
| 2020 for (int i = 1; i < count; i++) { | |
| 2021 int this_offset = pcs[i].pc_offset(); | |
| 2022 assert(this_offset > prev_offset, "offsets must be sorted"); | |
| 2023 prev_offset = this_offset; | |
| 2024 } | |
| 2025 assert(prev_offset == PcDesc::upper_offset_limit, | |
| 2026 "must end with a sentinel"); | |
| 2027 #endif //ASSERT | |
| 2028 | |
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2029 // Search for MethodHandle invokes and tag the nmethod. |
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2030 for (int i = 0; i < count; i++) { |
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2031 if (pcs[i].is_method_handle_invoke()) { |
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2032 set_has_method_handle_invokes(true); |
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2033 break; |
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2034 } |
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2035 } |
|
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2036 assert(has_method_handle_invokes() == (_deoptimize_mh_offset != -1), "must have deopt mh handler"); |
|
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2037 |
| 0 | 2038 int size = count * sizeof(PcDesc); |
| 2039 assert(scopes_pcs_size() >= size, "oob"); | |
| 2040 memcpy(scopes_pcs_begin(), pcs, size); | |
| 2041 | |
| 2042 // Adjust the final sentinel downward. | |
| 2043 PcDesc* last_pc = &scopes_pcs_begin()[count-1]; | |
| 2044 assert(last_pc->pc_offset() == PcDesc::upper_offset_limit, "sanity"); | |
| 1748 | 2045 last_pc->set_pc_offset(content_size() + 1); |
| 0 | 2046 for (; last_pc + 1 < scopes_pcs_end(); last_pc += 1) { |
| 2047 // Fill any rounding gaps with copies of the last record. | |
| 2048 last_pc[1] = last_pc[0]; | |
| 2049 } | |
| 2050 // The following assert could fail if sizeof(PcDesc) is not | |
| 2051 // an integral multiple of oopSize (the rounding term). | |
| 2052 // If it fails, change the logic to always allocate a multiple | |
| 2053 // of sizeof(PcDesc), and fill unused words with copies of *last_pc. | |
| 2054 assert(last_pc + 1 == scopes_pcs_end(), "must match exactly"); | |
| 2055 } | |
| 2056 | |
| 2057 void nmethod::copy_scopes_data(u_char* buffer, int size) { | |
| 2058 assert(scopes_data_size() >= size, "oob"); | |
| 2059 memcpy(scopes_data_begin(), buffer, size); | |
| 2060 } | |
| 2061 | |
| 2062 | |
| 2063 #ifdef ASSERT | |
| 2064 static PcDesc* linear_search(nmethod* nm, int pc_offset, bool approximate) { | |
| 2065 PcDesc* lower = nm->scopes_pcs_begin(); | |
| 2066 PcDesc* upper = nm->scopes_pcs_end(); | |
| 2067 lower += 1; // exclude initial sentinel | |
| 2068 PcDesc* res = NULL; | |
| 2069 for (PcDesc* p = lower; p < upper; p++) { | |
| 2070 NOT_PRODUCT(--nmethod_stats.pc_desc_tests); // don't count this call to match_desc | |
| 2071 if (match_desc(p, pc_offset, approximate)) { | |
| 2072 if (res == NULL) | |
| 2073 res = p; | |
| 2074 else | |
| 2075 res = (PcDesc*) badAddress; | |
| 2076 } | |
| 2077 } | |
| 2078 return res; | |
| 2079 } | |
| 2080 #endif | |
| 2081 | |
| 2082 | |
| 2083 // Finds a PcDesc with real-pc equal to "pc" | |
| 2084 PcDesc* nmethod::find_pc_desc_internal(address pc, bool approximate) { | |
| 1748 | 2085 address base_address = code_begin(); |
| 0 | 2086 if ((pc < base_address) || |
| 2087 (pc - base_address) >= (ptrdiff_t) PcDesc::upper_offset_limit) { | |
| 2088 return NULL; // PC is wildly out of range | |
| 2089 } | |
| 2090 int pc_offset = (int) (pc - base_address); | |
| 2091 | |
| 2092 // Check the PcDesc cache if it contains the desired PcDesc | |
| 2093 // (This as an almost 100% hit rate.) | |
| 2094 PcDesc* res = _pc_desc_cache.find_pc_desc(pc_offset, approximate); | |
| 2095 if (res != NULL) { | |
| 2096 assert(res == linear_search(this, pc_offset, approximate), "cache ok"); | |
| 2097 return res; | |
| 2098 } | |
| 2099 | |
| 2100 // Fallback algorithm: quasi-linear search for the PcDesc | |
| 2101 // Find the last pc_offset less than the given offset. | |
| 2102 // The successor must be the required match, if there is a match at all. | |
| 2103 // (Use a fixed radix to avoid expensive affine pointer arithmetic.) | |
| 2104 PcDesc* lower = scopes_pcs_begin(); | |
| 2105 PcDesc* upper = scopes_pcs_end(); | |
| 2106 upper -= 1; // exclude final sentinel | |
| 2107 if (lower >= upper) return NULL; // native method; no PcDescs at all | |
| 2108 | |
| 2109 #define assert_LU_OK \ | |
| 2110 /* invariant on lower..upper during the following search: */ \ | |
| 2111 assert(lower->pc_offset() < pc_offset, "sanity"); \ | |
| 2112 assert(upper->pc_offset() >= pc_offset, "sanity") | |
| 2113 assert_LU_OK; | |
| 2114 | |
| 2115 // Use the last successful return as a split point. | |
| 2116 PcDesc* mid = _pc_desc_cache.last_pc_desc(); | |
| 2117 NOT_PRODUCT(++nmethod_stats.pc_desc_searches); | |
| 2118 if (mid->pc_offset() < pc_offset) { | |
| 2119 lower = mid; | |
| 2120 } else { | |
| 2121 upper = mid; | |
| 2122 } | |
| 2123 | |
| 2124 // Take giant steps at first (4096, then 256, then 16, then 1) | |
| 2125 const int LOG2_RADIX = 4 /*smaller steps in debug mode:*/ debug_only(-1); | |
| 2126 const int RADIX = (1 << LOG2_RADIX); | |
| 2127 for (int step = (1 << (LOG2_RADIX*3)); step > 1; step >>= LOG2_RADIX) { | |
| 2128 while ((mid = lower + step) < upper) { | |
| 2129 assert_LU_OK; | |
| 2130 NOT_PRODUCT(++nmethod_stats.pc_desc_searches); | |
| 2131 if (mid->pc_offset() < pc_offset) { | |
| 2132 lower = mid; | |
| 2133 } else { | |
| 2134 upper = mid; | |
| 2135 break; | |
| 2136 } | |
| 2137 } | |
| 2138 assert_LU_OK; | |
| 2139 } | |
| 2140 | |
| 2141 // Sneak up on the value with a linear search of length ~16. | |
| 2142 while (true) { | |
| 2143 assert_LU_OK; | |
| 2144 mid = lower + 1; | |
| 2145 NOT_PRODUCT(++nmethod_stats.pc_desc_searches); | |
| 2146 if (mid->pc_offset() < pc_offset) { | |
| 2147 lower = mid; | |
| 2148 } else { | |
| 2149 upper = mid; | |
| 2150 break; | |
| 2151 } | |
| 2152 } | |
| 2153 #undef assert_LU_OK | |
| 2154 | |
| 2155 if (match_desc(upper, pc_offset, approximate)) { | |
| 2156 assert(upper == linear_search(this, pc_offset, approximate), "search ok"); | |
| 2157 _pc_desc_cache.add_pc_desc(upper); | |
| 2158 return upper; | |
| 2159 } else { | |
| 2160 assert(NULL == linear_search(this, pc_offset, approximate), "search ok"); | |
| 2161 return NULL; | |
| 2162 } | |
| 2163 } | |
| 2164 | |
| 2165 | |
| 2166 bool nmethod::check_all_dependencies() { | |
| 2167 bool found_check = false; | |
| 2168 // wholesale check of all dependencies | |
| 2169 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
| 2170 if (deps.check_dependency() != NULL) { | |
| 2171 found_check = true; | |
| 2172 NOT_DEBUG(break); | |
| 2173 } | |
| 2174 } | |
| 2175 return found_check; // tell caller if we found anything | |
| 2176 } | |
| 2177 | |
| 2178 bool nmethod::check_dependency_on(DepChange& changes) { | |
| 2179 // What has happened: | |
| 2180 // 1) a new class dependee has been added | |
| 2181 // 2) dependee and all its super classes have been marked | |
| 2182 bool found_check = false; // set true if we are upset | |
| 2183 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
| 2184 // Evaluate only relevant dependencies. | |
| 2185 if (deps.spot_check_dependency_at(changes) != NULL) { | |
| 2186 found_check = true; | |
| 2187 NOT_DEBUG(break); | |
| 2188 } | |
| 2189 } | |
| 2190 return found_check; | |
| 2191 } | |
| 2192 | |
|
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2193 bool nmethod::is_evol_dependent_on(Klass* dependee) { |
|
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2194 InstanceKlass *dependee_ik = InstanceKlass::cast(dependee); |
|
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2195 Array<Method*>* dependee_methods = dependee_ik->methods(); |
| 0 | 2196 for (Dependencies::DepStream deps(this); deps.next(); ) { |
| 2197 if (deps.type() == Dependencies::evol_method) { | |
|
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2198 Method* method = deps.method_argument(0); |
| 0 | 2199 for (int j = 0; j < dependee_methods->length(); j++) { |
|
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2200 if (dependee_methods->at(j) == method) { |
| 0 | 2201 // RC_TRACE macro has an embedded ResourceMark |
| 2202 RC_TRACE(0x01000000, | |
| 2203 ("Found evol dependency of nmethod %s.%s(%s) compile_id=%d on method %s.%s(%s)", | |
|
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2204 _method->method_holder()->external_name(), |
| 0 | 2205 _method->name()->as_C_string(), |
| 2206 _method->signature()->as_C_string(), compile_id(), | |
|
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2207 method->method_holder()->external_name(), |
| 0 | 2208 method->name()->as_C_string(), |
| 2209 method->signature()->as_C_string())); | |
| 2210 if (TraceDependencies || LogCompilation) | |
| 2211 deps.log_dependency(dependee); | |
| 2212 return true; | |
| 2213 } | |
| 2214 } | |
| 2215 } | |
| 2216 } | |
| 2217 return false; | |
| 2218 } | |
| 2219 | |
| 2220 // Called from mark_for_deoptimization, when dependee is invalidated. | |
|
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2221 bool nmethod::is_dependent_on_method(Method* dependee) { |
| 0 | 2222 for (Dependencies::DepStream deps(this); deps.next(); ) { |
| 2223 if (deps.type() != Dependencies::evol_method) | |
| 2224 continue; | |
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2225 Method* method = deps.method_argument(0); |
| 0 | 2226 if (method == dependee) return true; |
| 2227 } | |
| 2228 return false; | |
| 2229 } | |
| 2230 | |
| 2231 | |
| 2232 bool nmethod::is_patchable_at(address instr_addr) { | |
| 1748 | 2233 assert(insts_contains(instr_addr), "wrong nmethod used"); |
| 0 | 2234 if (is_zombie()) { |
| 2235 // a zombie may never be patched | |
| 2236 return false; | |
| 2237 } | |
| 2238 return true; | |
| 2239 } | |
| 2240 | |
| 2241 | |
| 2242 address nmethod::continuation_for_implicit_exception(address pc) { | |
| 2243 // Exception happened outside inline-cache check code => we are inside | |
| 2244 // an active nmethod => use cpc to determine a return address | |
| 1748 | 2245 int exception_offset = pc - code_begin(); |
| 0 | 2246 int cont_offset = ImplicitExceptionTable(this).at( exception_offset ); |
| 2247 #ifdef ASSERT | |
| 2248 if (cont_offset == 0) { | |
| 2249 Thread* thread = ThreadLocalStorage::get_thread_slow(); | |
| 2250 ResetNoHandleMark rnm; // Might be called from LEAF/QUICK ENTRY | |
| 2251 HandleMark hm(thread); | |
| 2252 ResourceMark rm(thread); | |
| 2253 CodeBlob* cb = CodeCache::find_blob(pc); | |
| 2254 assert(cb != NULL && cb == this, ""); | |
| 2255 tty->print_cr("implicit exception happened at " INTPTR_FORMAT, pc); | |
| 2256 print(); | |
| 2257 method()->print_codes(); | |
| 2258 print_code(); | |
| 2259 print_pcs(); | |
| 2260 } | |
| 2261 #endif | |
| 1250 | 2262 if (cont_offset == 0) { |
| 2263 // Let the normal error handling report the exception | |
| 2264 return NULL; | |
| 2265 } | |
| 1748 | 2266 return code_begin() + cont_offset; |
| 0 | 2267 } |
| 2268 | |
| 2269 | |
| 2270 | |
| 2271 void nmethod_init() { | |
| 2272 // make sure you didn't forget to adjust the filler fields | |
| 2273 assert(sizeof(nmethod) % oopSize == 0, "nmethod size must be multiple of a word"); | |
| 2274 } | |
| 2275 | |
| 2276 | |
| 2277 //------------------------------------------------------------------------------------------- | |
| 2278 | |
| 2279 | |
| 2280 // QQQ might we make this work from a frame?? | |
| 2281 nmethodLocker::nmethodLocker(address pc) { | |
| 2282 CodeBlob* cb = CodeCache::find_blob(pc); | |
| 2283 guarantee(cb != NULL && cb->is_nmethod(), "bad pc for a nmethod found"); | |
| 2284 _nm = (nmethod*)cb; | |
| 2285 lock_nmethod(_nm); | |
| 2286 } | |
| 2287 | |
|
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2288 // Only JvmtiDeferredEvent::compiled_method_unload_event() |
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2289 // should pass zombie_ok == true. |
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2290 void nmethodLocker::lock_nmethod(nmethod* nm, bool zombie_ok) { |
| 0 | 2291 if (nm == NULL) return; |
| 2292 Atomic::inc(&nm->_lock_count); | |
|
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2293 guarantee(zombie_ok || !nm->is_zombie(), "cannot lock a zombie method"); |
| 0 | 2294 } |
| 2295 | |
| 2296 void nmethodLocker::unlock_nmethod(nmethod* nm) { | |
| 2297 if (nm == NULL) return; | |
| 2298 Atomic::dec(&nm->_lock_count); | |
| 2299 guarantee(nm->_lock_count >= 0, "unmatched nmethod lock/unlock"); | |
| 2300 } | |
| 2301 | |
| 1204 | 2302 |
| 2303 // ----------------------------------------------------------------------------- | |
| 2304 // nmethod::get_deopt_original_pc | |
| 2305 // | |
| 2306 // Return the original PC for the given PC if: | |
| 2307 // (a) the given PC belongs to a nmethod and | |
| 2308 // (b) it is a deopt PC | |
| 2309 address nmethod::get_deopt_original_pc(const frame* fr) { | |
| 2310 if (fr->cb() == NULL) return NULL; | |
| 2311 | |
| 2312 nmethod* nm = fr->cb()->as_nmethod_or_null(); | |
| 2313 if (nm != NULL && nm->is_deopt_pc(fr->pc())) | |
| 2314 return nm->get_original_pc(fr); | |
| 2315 | |
| 2316 return NULL; | |
| 0 | 2317 } |
| 2318 | |
| 2319 | |
| 2320 // ----------------------------------------------------------------------------- | |
|
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2321 // MethodHandle |
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2322 |
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2323 bool nmethod::is_method_handle_return(address return_pc) { |
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2324 if (!has_method_handle_invokes()) return false; |
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2325 PcDesc* pd = pc_desc_at(return_pc); |
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2326 if (pd == NULL) |
|
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|
2327 return false; |
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|
2328 return pd->is_method_handle_invoke(); |
|
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|
2329 } |
|
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|
2330 |
|
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|
2331 |
|
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|
2332 // ----------------------------------------------------------------------------- |
| 0 | 2333 // Verification |
| 2334 | |
|
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2335 class VerifyOopsClosure: public OopClosure { |
|
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|
2336 nmethod* _nm; |
|
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|
2337 bool _ok; |
|
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|
2338 public: |
|
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|
2339 VerifyOopsClosure(nmethod* nm) : _nm(nm), _ok(true) { } |
|
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2340 bool ok() { return _ok; } |
|
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|
2341 virtual void do_oop(oop* p) { |
|
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|
2342 if ((*p) == NULL || (*p)->is_oop()) return; |
|
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|
2343 if (_ok) { |
|
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|
2344 _nm->print_nmethod(true); |
|
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|
2345 _ok = false; |
|
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|
2346 } |
|
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|
2347 tty->print_cr("*** non-oop "PTR_FORMAT" found at "PTR_FORMAT" (offset %d)", |
|
12316
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|
2348 (void *)(*p), (intptr_t)p, (int)((intptr_t)p - (intptr_t)_nm)); |
|
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|
2349 } |
|
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|
2350 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
|
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|
2351 }; |
|
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|
2352 |
| 0 | 2353 void nmethod::verify() { |
| 2354 | |
| 2355 // Hmm. OSR methods can be deopted but not marked as zombie or not_entrant | |
| 2356 // seems odd. | |
| 2357 | |
| 2358 if( is_zombie() || is_not_entrant() ) | |
| 2359 return; | |
| 2360 | |
| 2361 // Make sure all the entry points are correctly aligned for patching. | |
| 2362 NativeJump::check_verified_entry_alignment(entry_point(), verified_entry_point()); | |
| 2363 | |
|
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2364 // assert(method()->is_oop(), "must be valid"); |
| 0 | 2365 |
| 2366 ResourceMark rm; | |
| 2367 | |
| 2368 if (!CodeCache::contains(this)) { | |
|
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|
2369 fatal(err_msg("nmethod at " INTPTR_FORMAT " not in zone", this)); |
| 0 | 2370 } |
| 2371 | |
| 2372 if(is_native_method() ) | |
| 2373 return; | |
| 2374 | |
| 2375 nmethod* nm = CodeCache::find_nmethod(verified_entry_point()); | |
| 2376 if (nm != this) { | |
|
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|
2377 fatal(err_msg("findNMethod did not find this nmethod (" INTPTR_FORMAT ")", |
|
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|
2378 this)); |
| 0 | 2379 } |
| 2380 | |
| 2381 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
| 2382 if (! p->verify(this)) { | |
| 2383 tty->print_cr("\t\tin nmethod at " INTPTR_FORMAT " (pcs)", this); | |
| 2384 } | |
| 2385 } | |
| 2386 | |
|
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|
2387 VerifyOopsClosure voc(this); |
|
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|
2388 oops_do(&voc); |
|
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|
2389 assert(voc.ok(), "embedded oops must be OK"); |
|
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|
2390 verify_scavenge_root_oops(); |
|
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|
2391 |
| 0 | 2392 verify_scopes(); |
| 2393 } | |
| 2394 | |
| 2395 | |
| 2396 void nmethod::verify_interrupt_point(address call_site) { | |
| 2397 // This code does not work in release mode since | |
| 2398 // owns_lock only is available in debug mode. | |
| 2399 CompiledIC* ic = NULL; | |
| 2400 Thread *cur = Thread::current(); | |
| 2401 if (CompiledIC_lock->owner() == cur || | |
| 2402 ((cur->is_VM_thread() || cur->is_ConcurrentGC_thread()) && | |
| 2403 SafepointSynchronize::is_at_safepoint())) { | |
|
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|
2404 ic = CompiledIC_at(this, call_site); |
| 0 | 2405 CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops()); |
| 2406 } else { | |
| 2407 MutexLocker ml_verify (CompiledIC_lock); | |
|
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|
2408 ic = CompiledIC_at(this, call_site); |
| 0 | 2409 } |
| 2410 PcDesc* pd = pc_desc_at(ic->end_of_call()); | |
| 2411 assert(pd != NULL, "PcDesc must exist"); | |
| 2412 for (ScopeDesc* sd = new ScopeDesc(this, pd->scope_decode_offset(), | |
|
1253
f70b0d9ab095
6910618: C2: Error: assert(d->is_oop(),"JVM_ArrayCopy: dst not an oop")
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diff
changeset
|
2413 pd->obj_decode_offset(), pd->should_reexecute(), |
|
f70b0d9ab095
6910618: C2: Error: assert(d->is_oop(),"JVM_ArrayCopy: dst not an oop")
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diff
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|
2414 pd->return_oop()); |
| 0 | 2415 !sd->is_top(); sd = sd->sender()) { |
| 2416 sd->verify(); | |
| 2417 } | |
| 2418 } | |
| 2419 | |
| 2420 void nmethod::verify_scopes() { | |
| 2421 if( !method() ) return; // Runtime stubs have no scope | |
| 2422 if (method()->is_native()) return; // Ignore stub methods. | |
| 2423 // iterate through all interrupt point | |
| 2424 // and verify the debug information is valid. | |
| 2425 RelocIterator iter((nmethod*)this); | |
| 2426 while (iter.next()) { | |
| 2427 address stub = NULL; | |
| 2428 switch (iter.type()) { | |
| 2429 case relocInfo::virtual_call_type: | |
| 2430 verify_interrupt_point(iter.addr()); | |
| 2431 break; | |
| 2432 case relocInfo::opt_virtual_call_type: | |
| 2433 stub = iter.opt_virtual_call_reloc()->static_stub(); | |
| 2434 verify_interrupt_point(iter.addr()); | |
| 2435 break; | |
| 2436 case relocInfo::static_call_type: | |
| 2437 stub = iter.static_call_reloc()->static_stub(); | |
| 2438 //verify_interrupt_point(iter.addr()); | |
| 2439 break; | |
| 2440 case relocInfo::runtime_call_type: | |
| 2441 address destination = iter.reloc()->value(); | |
| 2442 // Right now there is no way to find out which entries support | |
| 2443 // an interrupt point. It would be nice if we had this | |
| 2444 // information in a table. | |
| 2445 break; | |
| 2446 } | |
| 2447 assert(stub == NULL || stub_contains(stub), "static call stub outside stub section"); | |
| 2448 } | |
| 2449 } | |
| 2450 | |
| 2451 | |
| 2452 // ----------------------------------------------------------------------------- | |
| 2453 // Non-product code | |
| 2454 #ifndef PRODUCT | |
| 2455 | |
|
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|
2456 class DebugScavengeRoot: public OopClosure { |
|
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931
diff
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|
2457 nmethod* _nm; |
|
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931
diff
changeset
|
2458 bool _ok; |
|
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6863023: need non-perm oops in code cache for JSR 292
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diff
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|
2459 public: |
|
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6863023: need non-perm oops in code cache for JSR 292
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diff
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|
2460 DebugScavengeRoot(nmethod* nm) : _nm(nm), _ok(true) { } |
|
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diff
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|
2461 bool ok() { return _ok; } |
|
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|
2462 virtual void do_oop(oop* p) { |
|
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6863023: need non-perm oops in code cache for JSR 292
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931
diff
changeset
|
2463 if ((*p) == NULL || !(*p)->is_scavengable()) return; |
|
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6863023: need non-perm oops in code cache for JSR 292
jrose
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931
diff
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|
2464 if (_ok) { |
|
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6863023: need non-perm oops in code cache for JSR 292
jrose
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931
diff
changeset
|
2465 _nm->print_nmethod(true); |
|
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6863023: need non-perm oops in code cache for JSR 292
jrose
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diff
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|
2466 _ok = false; |
|
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6863023: need non-perm oops in code cache for JSR 292
jrose
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diff
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|
2467 } |
|
3377
2aa9ddbb9e60
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
2405
diff
changeset
|
2468 tty->print_cr("*** scavengable oop "PTR_FORMAT" found at "PTR_FORMAT" (offset %d)", |
|
12316
190899198332
7195622: CheckUnhandledOops has limited usefulness now
hseigel
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12175
diff
changeset
|
2469 (void *)(*p), (intptr_t)p, (int)((intptr_t)p - (intptr_t)_nm)); |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2470 (*p)->print(); |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
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931
diff
changeset
|
2471 } |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
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931
diff
changeset
|
2472 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
|
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6863023: need non-perm oops in code cache for JSR 292
jrose
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931
diff
changeset
|
2473 }; |
| 0 | 2474 |
|
989
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6863023: need non-perm oops in code cache for JSR 292
jrose
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931
diff
changeset
|
2475 void nmethod::verify_scavenge_root_oops() { |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
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931
diff
changeset
|
2476 if (!on_scavenge_root_list()) { |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
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931
diff
changeset
|
2477 // Actually look inside, to verify the claim that it's clean. |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
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931
diff
changeset
|
2478 DebugScavengeRoot debug_scavenge_root(this); |
|
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6863023: need non-perm oops in code cache for JSR 292
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931
diff
changeset
|
2479 oops_do(&debug_scavenge_root); |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
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931
diff
changeset
|
2480 if (!debug_scavenge_root.ok()) |
|
3377
2aa9ddbb9e60
7041789: 30% perf regression with c2/arm following 7017732
jmasa
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2405
diff
changeset
|
2481 fatal("found an unadvertised bad scavengable oop in the code cache"); |
| 0 | 2482 } |
|
989
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931
diff
changeset
|
2483 assert(scavenge_root_not_marked(), ""); |
| 0 | 2484 } |
| 2485 | |
|
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
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30
diff
changeset
|
2486 #endif // PRODUCT |
| 0 | 2487 |
| 2488 // Printing operations | |
| 2489 | |
| 2490 void nmethod::print() const { | |
| 2491 ResourceMark rm; | |
| 2492 ttyLocker ttyl; // keep the following output all in one block | |
| 2493 | |
|
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2376
diff
changeset
|
2494 tty->print("Compiled method "); |
| 0 | 2495 |
| 2496 if (is_compiled_by_c1()) { | |
| 2497 tty->print("(c1) "); | |
| 2498 } else if (is_compiled_by_c2()) { | |
| 2499 tty->print("(c2) "); | |
| 1692 | 2500 } else if (is_compiled_by_shark()) { |
| 2501 tty->print("(shark) "); | |
| 0 | 2502 } else { |
| 2503 tty->print("(nm) "); | |
| 2504 } | |
| 2505 | |
|
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2376
diff
changeset
|
2506 print_on(tty, NULL); |
|
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
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2376
diff
changeset
|
2507 |
| 0 | 2508 if (WizardMode) { |
| 2509 tty->print("((nmethod*) "INTPTR_FORMAT ") ", this); | |
| 2510 tty->print(" for method " INTPTR_FORMAT , (address)method()); | |
| 2511 tty->print(" { "); | |
| 2512 if (is_in_use()) tty->print("in_use "); | |
| 2513 if (is_not_entrant()) tty->print("not_entrant "); | |
| 2514 if (is_zombie()) tty->print("zombie "); | |
| 2515 if (is_unloaded()) tty->print("unloaded "); | |
|
989
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931
diff
changeset
|
2516 if (on_scavenge_root_list()) tty->print("scavenge_root "); |
| 0 | 2517 tty->print_cr("}:"); |
| 2518 } | |
| 2519 if (size () > 0) tty->print_cr(" total in heap [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
| 2520 (address)this, | |
| 2521 (address)this + size(), | |
| 2522 size()); | |
| 2523 if (relocation_size () > 0) tty->print_cr(" relocation [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
| 2524 relocation_begin(), | |
| 2525 relocation_end(), | |
| 2526 relocation_size()); | |
|
1762
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
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1748
diff
changeset
|
2527 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
|
2528 consts_begin(), |
|
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
2529 consts_end(), |
|
0878d7bae69f
6961697: move nmethod constants section before instruction section
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1748
diff
changeset
|
2530 consts_size()); |
| 1748 | 2531 if (insts_size () > 0) tty->print_cr(" main code [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
| 2532 insts_begin(), | |
| 2533 insts_end(), | |
| 2534 insts_size()); | |
| 0 | 2535 if (stub_size () > 0) tty->print_cr(" stub code [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
| 2536 stub_begin(), | |
| 2537 stub_end(), | |
| 2538 stub_size()); | |
|
1563
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
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1538
diff
changeset
|
2539 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
|
2540 oops_begin(), |
|
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
1538
diff
changeset
|
2541 oops_end(), |
|
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
1538
diff
changeset
|
2542 oops_size()); |
|
6725
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coleenp
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diff
changeset
|
2543 if (metadata_size () > 0) tty->print_cr(" metadata [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2544 metadata_begin(), |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2545 metadata_end(), |
|
da91efe96a93
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coleenp
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changeset
|
2546 metadata_size()); |
| 0 | 2547 if (scopes_data_size () > 0) tty->print_cr(" scopes data [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
| 2548 scopes_data_begin(), | |
| 2549 scopes_data_end(), | |
| 2550 scopes_data_size()); | |
| 2551 if (scopes_pcs_size () > 0) tty->print_cr(" scopes pcs [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
| 2552 scopes_pcs_begin(), | |
| 2553 scopes_pcs_end(), | |
| 2554 scopes_pcs_size()); | |
| 2555 if (dependencies_size () > 0) tty->print_cr(" dependencies [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
| 2556 dependencies_begin(), | |
| 2557 dependencies_end(), | |
| 2558 dependencies_size()); | |
| 2559 if (handler_table_size() > 0) tty->print_cr(" handler table [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
| 2560 handler_table_begin(), | |
| 2561 handler_table_end(), | |
| 2562 handler_table_size()); | |
| 2563 if (nul_chk_table_size() > 0) tty->print_cr(" nul chk table [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
| 2564 nul_chk_table_begin(), | |
| 2565 nul_chk_table_end(), | |
| 2566 nul_chk_table_size()); | |
| 2567 } | |
| 2568 | |
|
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|
2569 void nmethod::print_code() { |
|
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diff
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|
2570 HandleMark hm; |
|
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diff
changeset
|
2571 ResourceMark m; |
|
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diff
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|
2572 Disassembler::decode(this); |
|
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diff
changeset
|
2573 } |
|
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diff
changeset
|
2574 |
|
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|
2575 |
|
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|
2576 #ifndef PRODUCT |
| 0 | 2577 |
| 2578 void nmethod::print_scopes() { | |
| 2579 // Find the first pc desc for all scopes in the code and print it. | |
| 2580 ResourceMark rm; | |
| 2581 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
| 2582 if (p->scope_decode_offset() == DebugInformationRecorder::serialized_null) | |
| 2583 continue; | |
| 2584 | |
| 2585 ScopeDesc* sd = scope_desc_at(p->real_pc(this)); | |
| 2586 sd->print_on(tty, p); | |
| 2587 } | |
| 2588 } | |
| 2589 | |
| 2590 void nmethod::print_dependencies() { | |
| 2591 ResourceMark rm; | |
| 2592 ttyLocker ttyl; // keep the following output all in one block | |
| 2593 tty->print_cr("Dependencies:"); | |
| 2594 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
| 2595 deps.print_dependency(); | |
|
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|
2596 Klass* ctxk = deps.context_type(); |
| 0 | 2597 if (ctxk != NULL) { |
| 6983 | 2598 if (ctxk->oop_is_instance() && ((InstanceKlass*)ctxk)->is_dependent_nmethod(this)) { |
| 2599 tty->print_cr(" [nmethod<=klass]%s", ctxk->external_name()); | |
| 0 | 2600 } |
| 2601 } | |
| 2602 deps.log_dependency(); // put it into the xml log also | |
| 2603 } | |
| 2604 } | |
| 2605 | |
| 2606 | |
| 2607 void nmethod::print_relocations() { | |
| 2608 ResourceMark m; // in case methods get printed via the debugger | |
| 2609 tty->print_cr("relocations:"); | |
| 2610 RelocIterator iter(this); | |
| 2611 iter.print(); | |
| 2612 if (UseRelocIndex) { | |
| 2613 jint* index_end = (jint*)relocation_end() - 1; | |
| 2614 jint index_size = *index_end; | |
| 2615 jint* index_start = (jint*)( (address)index_end - index_size ); | |
| 2616 tty->print_cr(" index @" INTPTR_FORMAT ": index_size=%d", index_start, index_size); | |
| 2617 if (index_size > 0) { | |
| 2618 jint* ip; | |
| 2619 for (ip = index_start; ip+2 <= index_end; ip += 2) | |
| 2620 tty->print_cr(" (%d %d) addr=" INTPTR_FORMAT " @" INTPTR_FORMAT, | |
| 2621 ip[0], | |
| 2622 ip[1], | |
| 2623 header_end()+ip[0], | |
| 2624 relocation_begin()-1+ip[1]); | |
| 2625 for (; ip < index_end; ip++) | |
| 2626 tty->print_cr(" (%d ?)", ip[0]); | |
|
10973
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diff
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|
2627 tty->print_cr(" @" INTPTR_FORMAT ": index_size=%d", ip, *ip); |
|
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diff
changeset
|
2628 ip++; |
| 0 | 2629 tty->print_cr("reloc_end @" INTPTR_FORMAT ":", ip); |
| 2630 } | |
| 2631 } | |
| 2632 } | |
| 2633 | |
| 2634 | |
| 2635 void nmethod::print_pcs() { | |
| 2636 ResourceMark m; // in case methods get printed via debugger | |
| 2637 tty->print_cr("pc-bytecode offsets:"); | |
| 2638 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
| 2639 p->print(this); | |
| 2640 } | |
| 2641 } | |
| 2642 | |
|
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|
2643 #endif // PRODUCT |
| 0 | 2644 |
| 2645 const char* nmethod::reloc_string_for(u_char* begin, u_char* end) { | |
| 2646 RelocIterator iter(this, begin, end); | |
| 2647 bool have_one = false; | |
| 2648 while (iter.next()) { | |
| 2649 have_one = true; | |
| 2650 switch (iter.type()) { | |
| 2651 case relocInfo::none: return "no_reloc"; | |
| 2652 case relocInfo::oop_type: { | |
| 2653 stringStream st; | |
| 2654 oop_Relocation* r = iter.oop_reloc(); | |
| 2655 oop obj = r->oop_value(); | |
| 2656 st.print("oop("); | |
| 2657 if (obj == NULL) st.print("NULL"); | |
| 2658 else obj->print_value_on(&st); | |
| 2659 st.print(")"); | |
| 2660 return st.as_string(); | |
| 2661 } | |
|
6725
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diff
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|
2662 case relocInfo::metadata_type: { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2663 stringStream st; |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6266
diff
changeset
|
2664 metadata_Relocation* r = iter.metadata_reloc(); |
|
da91efe96a93
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diff
changeset
|
2665 Metadata* obj = r->metadata_value(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2666 st.print("metadata("); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2667 if (obj == NULL) st.print("NULL"); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
2668 else obj->print_value_on(&st); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2669 st.print(")"); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
2670 return st.as_string(); |
|
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diff
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|
2671 } |
| 0 | 2672 case relocInfo::virtual_call_type: return "virtual_call"; |
| 2673 case relocInfo::opt_virtual_call_type: return "optimized virtual_call"; | |
| 2674 case relocInfo::static_call_type: return "static_call"; | |
| 2675 case relocInfo::static_stub_type: return "static_stub"; | |
| 2676 case relocInfo::runtime_call_type: return "runtime_call"; | |
| 2677 case relocInfo::external_word_type: return "external_word"; | |
| 2678 case relocInfo::internal_word_type: return "internal_word"; | |
| 2679 case relocInfo::section_word_type: return "section_word"; | |
| 2680 case relocInfo::poll_type: return "poll"; | |
| 2681 case relocInfo::poll_return_type: return "poll_return"; | |
| 2682 case relocInfo::type_mask: return "type_bit_mask"; | |
| 2683 } | |
| 2684 } | |
| 2685 return have_one ? "other" : NULL; | |
| 2686 } | |
| 2687 | |
| 2688 // Return a the last scope in (begin..end] | |
| 2689 ScopeDesc* nmethod::scope_desc_in(address begin, address end) { | |
| 2690 PcDesc* p = pc_desc_near(begin+1); | |
| 2691 if (p != NULL && p->real_pc(this) <= end) { | |
| 2692 return new ScopeDesc(this, p->scope_decode_offset(), | |
|
1253
f70b0d9ab095
6910618: C2: Error: assert(d->is_oop(),"JVM_ArrayCopy: dst not an oop")
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parents:
1250
diff
changeset
|
2693 p->obj_decode_offset(), p->should_reexecute(), |
|
f70b0d9ab095
6910618: C2: Error: assert(d->is_oop(),"JVM_ArrayCopy: dst not an oop")
kvn
parents:
1250
diff
changeset
|
2694 p->return_oop()); |
| 0 | 2695 } |
| 2696 return NULL; | |
| 2697 } | |
| 2698 | |
|
6796
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
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6792
diff
changeset
|
2699 void nmethod::print_nmethod_labels(outputStream* stream, address block_begin) const { |
|
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
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1141
diff
changeset
|
2700 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
|
2701 if (block_begin == verified_entry_point()) stream->print_cr("[Verified Entry Point]"); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
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parents:
1141
diff
changeset
|
2702 if (block_begin == exception_begin()) stream->print_cr("[Exception Handler]"); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2703 if (block_begin == stub_begin()) stream->print_cr("[Stub Code]"); |
| 1204 | 2704 if (block_begin == deopt_handler_begin()) stream->print_cr("[Deopt Handler Code]"); |
|
1691
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
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1644
diff
changeset
|
2705 |
|
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
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parents:
1644
diff
changeset
|
2706 if (has_method_handle_invokes()) |
|
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
twisti
parents:
1644
diff
changeset
|
2707 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
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parents:
1644
diff
changeset
|
2708 |
|
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
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1141
diff
changeset
|
2709 if (block_begin == consts_begin()) stream->print_cr("[Constants]"); |
|
1691
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
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diff
changeset
|
2710 |
|
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
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diff
changeset
|
2711 if (block_begin == entry_point()) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
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1141
diff
changeset
|
2712 methodHandle m = method(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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1141
diff
changeset
|
2713 if (m.not_null()) { |
|
4e6abf09f540
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1141
diff
changeset
|
2714 stream->print(" # "); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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1141
diff
changeset
|
2715 m->print_value_on(stream); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2716 stream->cr(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
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1141
diff
changeset
|
2717 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
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diff
changeset
|
2718 if (m.not_null() && !is_osr_method()) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2719 ResourceMark rm; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
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1141
diff
changeset
|
2720 int sizeargs = m->size_of_parameters(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2721 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType, sizeargs); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
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diff
changeset
|
2722 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, sizeargs); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2723 { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
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1141
diff
changeset
|
2724 int sig_index = 0; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2725 if (!m->is_static()) |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2726 sig_bt[sig_index++] = T_OBJECT; // 'this' |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2727 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
|
2728 BasicType t = ss.type(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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1141
diff
changeset
|
2729 sig_bt[sig_index++] = t; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2730 if (type2size[t] == 2) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2731 sig_bt[sig_index++] = T_VOID; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2732 } else { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2733 assert(type2size[t] == 1, "size is 1 or 2"); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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1141
diff
changeset
|
2734 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
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1141
diff
changeset
|
2735 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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1141
diff
changeset
|
2736 assert(sig_index == sizeargs, ""); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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1141
diff
changeset
|
2737 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
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1141
diff
changeset
|
2738 const char* spname = "sp"; // make arch-specific? |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2739 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
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1141
diff
changeset
|
2740 int stack_slot_offset = this->frame_size() * wordSize; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
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1141
diff
changeset
|
2741 int tab1 = 14, tab2 = 24; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
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1141
diff
changeset
|
2742 int sig_index = 0; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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1141
diff
changeset
|
2743 int arg_index = (m->is_static() ? 0 : -1); |
|
4e6abf09f540
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1141
diff
changeset
|
2744 bool did_old_sp = false; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
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1141
diff
changeset
|
2745 for (SignatureStream ss(m->signature()); !ss.at_return_type(); ) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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1141
diff
changeset
|
2746 bool at_this = (arg_index == -1); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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1141
diff
changeset
|
2747 bool at_old_sp = false; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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1141
diff
changeset
|
2748 BasicType t = (at_this ? T_OBJECT : ss.type()); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
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1141
diff
changeset
|
2749 assert(t == sig_bt[sig_index], "sigs in sync"); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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1141
diff
changeset
|
2750 if (at_this) |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2751 stream->print(" # this: "); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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1141
diff
changeset
|
2752 else |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
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1141
diff
changeset
|
2753 stream->print(" # parm%d: ", arg_index); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2754 stream->move_to(tab1); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
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1141
diff
changeset
|
2755 VMReg fst = regs[sig_index].first(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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1141
diff
changeset
|
2756 VMReg snd = regs[sig_index].second(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
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1141
diff
changeset
|
2757 if (fst->is_reg()) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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1141
diff
changeset
|
2758 stream->print("%s", fst->name()); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
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parents:
1141
diff
changeset
|
2759 if (snd->is_valid()) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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1141
diff
changeset
|
2760 stream->print(":%s", snd->name()); |
|
4e6abf09f540
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|
2761 } |
|
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|
2762 } else if (fst->is_stack()) { |
|
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changeset
|
2763 int offset = fst->reg2stack() * VMRegImpl::stack_slot_size + stack_slot_offset; |
|
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|
2764 if (offset == stack_slot_offset) at_old_sp = true; |
|
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|
2765 stream->print("[%s+0x%x]", spname, offset); |
|
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|
2766 } else { |
|
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|
2767 stream->print("reg%d:%d??", (int)(intptr_t)fst, (int)(intptr_t)snd); |
|
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|
2768 } |
|
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|
2769 stream->print(" "); |
|
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|
2770 stream->move_to(tab2); |
|
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|
2771 stream->print("= "); |
|
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|
2772 if (at_this) { |
|
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|
2773 m->method_holder()->print_value_on(stream); |
|
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|
2774 } else { |
|
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|
2775 bool did_name = false; |
|
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|
2776 if (!at_this && ss.is_object()) { |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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|
2777 Symbol* name = ss.as_symbol_or_null(); |
|
1155
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|
2778 if (name != NULL) { |
|
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diff
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|
2779 name->print_value_on(stream); |
|
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|
2780 did_name = true; |
|
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|
2781 } |
|
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changeset
|
2782 } |
|
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6912062: disassembler plugin needs to produce symbolic information in product mode
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|
2783 if (!did_name) |
|
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diff
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|
2784 stream->print("%s", type2name(t)); |
|
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|
2785 } |
|
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changeset
|
2786 if (at_old_sp) { |
|
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diff
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|
2787 stream->print(" (%s of caller)", spname); |
|
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diff
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|
2788 did_old_sp = true; |
|
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diff
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|
2789 } |
|
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|
2790 stream->cr(); |
|
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|
2791 sig_index += type2size[t]; |
|
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diff
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|
2792 arg_index += 1; |
|
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changeset
|
2793 if (!at_this) ss.next(); |
|
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|
2794 } |
|
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changeset
|
2795 if (!did_old_sp) { |
|
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diff
changeset
|
2796 stream->print(" # "); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
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diff
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|
2797 stream->move_to(tab1); |
|
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6912062: disassembler plugin needs to produce symbolic information in product mode
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diff
changeset
|
2798 stream->print("[%s+0x%x]", spname, stack_slot_offset); |
|
4e6abf09f540
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diff
changeset
|
2799 stream->print(" (%s of caller)", spname); |
|
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6912062: disassembler plugin needs to produce symbolic information in product mode
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diff
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|
2800 stream->cr(); |
|
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|
2801 } |
|
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|
2802 } |
|
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|
2803 } |
|
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|
2804 } |
|
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|
2805 |
| 0 | 2806 void nmethod::print_code_comment_on(outputStream* st, int column, u_char* begin, u_char* end) { |
| 2807 // First, find an oopmap in (begin, end]. | |
| 2808 // We use the odd half-closed interval so that oop maps and scope descs | |
| 2809 // which are tied to the byte after a call are printed with the call itself. | |
| 1748 | 2810 address base = code_begin(); |
| 0 | 2811 OopMapSet* oms = oop_maps(); |
| 2812 if (oms != NULL) { | |
| 2813 for (int i = 0, imax = oms->size(); i < imax; i++) { | |
| 2814 OopMap* om = oms->at(i); | |
| 2815 address pc = base + om->offset(); | |
| 2816 if (pc > begin) { | |
| 2817 if (pc <= end) { | |
|
100
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diff
changeset
|
2818 st->move_to(column); |
|
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diff
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|
2819 st->print("; "); |
|
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diff
changeset
|
2820 om->print_on(st); |
| 0 | 2821 } |
| 2822 break; | |
| 2823 } | |
| 2824 } | |
| 2825 } | |
|
100
c7c777385a15
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diff
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|
2826 |
|
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diff
changeset
|
2827 // Print any debug info present at this pc. |
| 0 | 2828 ScopeDesc* sd = scope_desc_in(begin, end); |
| 2829 if (sd != NULL) { | |
|
100
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diff
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|
2830 st->move_to(column); |
| 0 | 2831 if (sd->bci() == SynchronizationEntryBCI) { |
| 2832 st->print(";*synchronization entry"); | |
| 2833 } else { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
2834 if (sd->method() == NULL) { |
|
100
c7c777385a15
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diff
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|
2835 st->print("method is NULL"); |
| 0 | 2836 } else if (sd->method()->is_native()) { |
|
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diff
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|
2837 st->print("method is native"); |
| 0 | 2838 } else { |
| 2142 | 2839 Bytecodes::Code bc = sd->method()->java_code_at(sd->bci()); |
| 0 | 2840 st->print(";*%s", Bytecodes::name(bc)); |
| 2841 switch (bc) { | |
| 2842 case Bytecodes::_invokevirtual: | |
| 2843 case Bytecodes::_invokespecial: | |
| 2844 case Bytecodes::_invokestatic: | |
| 2845 case Bytecodes::_invokeinterface: | |
| 2846 { | |
| 2142 | 2847 Bytecode_invoke invoke(sd->method(), sd->bci()); |
| 0 | 2848 st->print(" "); |
| 2142 | 2849 if (invoke.name() != NULL) |
| 2850 invoke.name()->print_symbol_on(st); | |
| 0 | 2851 else |
| 2852 st->print("<UNKNOWN>"); | |
| 2853 break; | |
| 2854 } | |
| 2855 case Bytecodes::_getfield: | |
| 2856 case Bytecodes::_putfield: | |
| 2857 case Bytecodes::_getstatic: | |
| 2858 case Bytecodes::_putstatic: | |
| 2859 { | |
| 2142 | 2860 Bytecode_field field(sd->method(), sd->bci()); |
| 0 | 2861 st->print(" "); |
| 2142 | 2862 if (field.name() != NULL) |
| 2863 field.name()->print_symbol_on(st); | |
| 0 | 2864 else |
| 2865 st->print("<UNKNOWN>"); | |
| 2866 } | |
| 2867 } | |
| 2868 } | |
| 2869 } | |
|
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diff
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|
2870 |
| 0 | 2871 // Print all scopes |
| 2872 for (;sd != NULL; sd = sd->sender()) { | |
|
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diff
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|
2873 st->move_to(column); |
| 0 | 2874 st->print("; -"); |
|
6725
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diff
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|
2875 if (sd->method() == NULL) { |
|
100
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diff
changeset
|
2876 st->print("method is NULL"); |
| 0 | 2877 } else { |
| 2878 sd->method()->print_short_name(st); | |
| 2879 } | |
| 2880 int lineno = sd->method()->line_number_from_bci(sd->bci()); | |
| 2881 if (lineno != -1) { | |
| 2882 st->print("@%d (line %d)", sd->bci(), lineno); | |
| 2883 } else { | |
| 2884 st->print("@%d", sd->bci()); | |
| 2885 } | |
| 2886 st->cr(); | |
| 2887 } | |
| 2888 } | |
| 2889 | |
| 2890 // Print relocation information | |
| 2891 const char* str = reloc_string_for(begin, end); | |
| 2892 if (str != NULL) { | |
| 2893 if (sd != NULL) st->cr(); | |
|
100
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diff
changeset
|
2894 st->move_to(column); |
| 0 | 2895 st->print("; {%s}", str); |
| 2896 } | |
| 1748 | 2897 int cont_offset = ImplicitExceptionTable(this).at(begin - code_begin()); |
| 0 | 2898 if (cont_offset != 0) { |
|
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diff
changeset
|
2899 st->move_to(column); |
| 1748 | 2900 st->print("; implicit exception: dispatches to " INTPTR_FORMAT, code_begin() + cont_offset); |
| 0 | 2901 } |
| 2902 | |
| 2903 } | |
| 2904 | |
|
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diff
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|
2905 #ifndef PRODUCT |
|
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
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30
diff
changeset
|
2906 |
| 0 | 2907 void nmethod::print_value_on(outputStream* st) const { |
|
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
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2376
diff
changeset
|
2908 st->print("nmethod"); |
|
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
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2376
diff
changeset
|
2909 print_on(st, NULL); |
| 0 | 2910 } |
| 2911 | |
| 2912 void nmethod::print_calls(outputStream* st) { | |
| 2913 RelocIterator iter(this); | |
| 2914 while (iter.next()) { | |
| 2915 switch (iter.type()) { | |
| 2916 case relocInfo::virtual_call_type: | |
| 2917 case relocInfo::opt_virtual_call_type: { | |
| 2918 VerifyMutexLocker mc(CompiledIC_lock); | |
| 2919 CompiledIC_at(iter.reloc())->print(); | |
| 2920 break; | |
| 2921 } | |
| 2922 case relocInfo::static_call_type: | |
| 2923 st->print_cr("Static call at " INTPTR_FORMAT, iter.reloc()->addr()); | |
| 2924 compiledStaticCall_at(iter.reloc())->print(); | |
| 2925 break; | |
| 2926 } | |
| 2927 } | |
| 2928 } | |
| 2929 | |
| 2930 void nmethod::print_handler_table() { | |
| 2931 ExceptionHandlerTable(this).print(); | |
| 2932 } | |
| 2933 | |
| 2934 void nmethod::print_nul_chk_table() { | |
| 1748 | 2935 ImplicitExceptionTable(this).print(code_begin()); |
| 0 | 2936 } |
| 2937 | |
| 2938 void nmethod::print_statistics() { | |
| 2939 ttyLocker ttyl; | |
| 2940 if (xtty != NULL) xtty->head("statistics type='nmethod'"); | |
| 2941 nmethod_stats.print_native_nmethod_stats(); | |
| 2942 nmethod_stats.print_nmethod_stats(); | |
| 2943 DebugInformationRecorder::print_statistics(); | |
| 2944 nmethod_stats.print_pc_stats(); | |
| 2945 Dependencies::print_statistics(); | |
| 2946 if (xtty != NULL) xtty->tail("statistics"); | |
| 2947 } | |
| 2948 | |
| 2949 #endif // PRODUCT |