Mercurial > hg > graal-compiler
annotate src/share/vm/code/nmethod.cpp @ 10114:a7fb14888912
8006952: Slow VM due to excessive code cache freelist iteration
Summary: Remove continous free block requirement
Reviewed-by: kvn
| author | neliasso |
|---|---|
| date | Thu, 11 Apr 2013 13:57:44 +0200 |
| parents | 3c786355ffb4 |
| children | 4674e409a9e6 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "code/codeCache.hpp" | |
| 27 #include "code/compiledIC.hpp" | |
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28 #include "code/dependencies.hpp" |
| 1972 | 29 #include "code/nmethod.hpp" |
| 30 #include "code/scopeDesc.hpp" | |
| 31 #include "compiler/abstractCompiler.hpp" | |
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32 #include "compiler/compileBroker.hpp" |
| 1972 | 33 #include "compiler/compileLog.hpp" |
| 34 #include "compiler/compilerOracle.hpp" | |
| 35 #include "compiler/disassembler.hpp" | |
| 36 #include "interpreter/bytecode.hpp" | |
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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 || method() == NULL) return false; // can happen during debug printing |
| 0 | 97 if (is_native_method()) return false; |
| 98 return compiler()->is_c1(); | |
| 99 } | |
| 100 bool nmethod::is_compiled_by_c2() const { | |
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101 if (compiler() == NULL || method() == NULL) return false; // can happen during debug printing |
| 0 | 102 if (is_native_method()) return false; |
| 103 return compiler()->is_c2(); | |
| 104 } | |
| 1692 | 105 bool nmethod::is_compiled_by_shark() const { |
| 106 if (is_native_method()) return false; | |
| 107 assert(compiler() != NULL, "must be"); | |
| 108 return compiler()->is_shark(); | |
| 109 } | |
| 0 | 110 |
| 111 | |
| 112 | |
| 113 //--------------------------------------------------------------------------------- | |
| 114 // NMethod statistics | |
| 115 // They are printed under various flags, including: | |
| 116 // PrintC1Statistics, PrintOptoStatistics, LogVMOutput, and LogCompilation. | |
| 117 // (In the latter two cases, they like other stats are printed to the log only.) | |
| 118 | |
| 119 #ifndef PRODUCT | |
| 120 // These variables are put into one block to reduce relocations | |
| 121 // and make it simpler to print from the debugger. | |
| 122 static | |
| 123 struct nmethod_stats_struct { | |
| 124 int nmethod_count; | |
| 125 int total_size; | |
| 126 int relocation_size; | |
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127 int consts_size; |
| 1748 | 128 int insts_size; |
| 0 | 129 int stub_size; |
| 130 int scopes_data_size; | |
| 131 int scopes_pcs_size; | |
| 132 int dependencies_size; | |
| 133 int handler_table_size; | |
| 134 int nul_chk_table_size; | |
| 135 int oops_size; | |
| 136 | |
| 137 void note_nmethod(nmethod* nm) { | |
| 138 nmethod_count += 1; | |
| 139 total_size += nm->size(); | |
| 140 relocation_size += nm->relocation_size(); | |
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141 consts_size += nm->consts_size(); |
| 1748 | 142 insts_size += nm->insts_size(); |
| 0 | 143 stub_size += nm->stub_size(); |
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144 oops_size += nm->oops_size(); |
| 0 | 145 scopes_data_size += nm->scopes_data_size(); |
| 146 scopes_pcs_size += nm->scopes_pcs_size(); | |
| 147 dependencies_size += nm->dependencies_size(); | |
| 148 handler_table_size += nm->handler_table_size(); | |
| 149 nul_chk_table_size += nm->nul_chk_table_size(); | |
| 150 } | |
| 151 void print_nmethod_stats() { | |
| 152 if (nmethod_count == 0) return; | |
| 153 tty->print_cr("Statistics for %d bytecoded nmethods:", nmethod_count); | |
| 154 if (total_size != 0) tty->print_cr(" total in heap = %d", total_size); | |
| 155 if (relocation_size != 0) tty->print_cr(" relocation = %d", relocation_size); | |
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156 if (consts_size != 0) tty->print_cr(" constants = %d", consts_size); |
| 1748 | 157 if (insts_size != 0) tty->print_cr(" main code = %d", insts_size); |
| 0 | 158 if (stub_size != 0) tty->print_cr(" stub code = %d", stub_size); |
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159 if (oops_size != 0) tty->print_cr(" oops = %d", oops_size); |
| 0 | 160 if (scopes_data_size != 0) tty->print_cr(" scopes data = %d", scopes_data_size); |
| 161 if (scopes_pcs_size != 0) tty->print_cr(" scopes pcs = %d", scopes_pcs_size); | |
| 162 if (dependencies_size != 0) tty->print_cr(" dependencies = %d", dependencies_size); | |
| 163 if (handler_table_size != 0) tty->print_cr(" handler table = %d", handler_table_size); | |
| 164 if (nul_chk_table_size != 0) tty->print_cr(" nul chk table = %d", nul_chk_table_size); | |
| 165 } | |
| 166 | |
| 167 int native_nmethod_count; | |
| 168 int native_total_size; | |
| 169 int native_relocation_size; | |
| 1748 | 170 int native_insts_size; |
| 0 | 171 int native_oops_size; |
| 172 void note_native_nmethod(nmethod* nm) { | |
| 173 native_nmethod_count += 1; | |
| 174 native_total_size += nm->size(); | |
| 175 native_relocation_size += nm->relocation_size(); | |
| 1748 | 176 native_insts_size += nm->insts_size(); |
| 0 | 177 native_oops_size += nm->oops_size(); |
| 178 } | |
| 179 void print_native_nmethod_stats() { | |
| 180 if (native_nmethod_count == 0) return; | |
| 181 tty->print_cr("Statistics for %d native nmethods:", native_nmethod_count); | |
| 182 if (native_total_size != 0) tty->print_cr(" N. total size = %d", native_total_size); | |
| 183 if (native_relocation_size != 0) tty->print_cr(" N. relocation = %d", native_relocation_size); | |
| 1748 | 184 if (native_insts_size != 0) tty->print_cr(" N. main code = %d", native_insts_size); |
| 0 | 185 if (native_oops_size != 0) tty->print_cr(" N. oops = %d", native_oops_size); |
| 186 } | |
| 187 | |
| 188 int pc_desc_resets; // number of resets (= number of caches) | |
| 189 int pc_desc_queries; // queries to nmethod::find_pc_desc | |
| 190 int pc_desc_approx; // number of those which have approximate true | |
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191 int pc_desc_repeats; // number of _pc_descs[0] hits |
| 0 | 192 int pc_desc_hits; // number of LRU cache hits |
| 193 int pc_desc_tests; // total number of PcDesc examinations | |
| 194 int pc_desc_searches; // total number of quasi-binary search steps | |
| 195 int pc_desc_adds; // number of LUR cache insertions | |
| 196 | |
| 197 void print_pc_stats() { | |
| 198 tty->print_cr("PcDesc Statistics: %d queries, %.2f comparisons per query", | |
| 199 pc_desc_queries, | |
| 200 (double)(pc_desc_tests + pc_desc_searches) | |
| 201 / pc_desc_queries); | |
| 202 tty->print_cr(" caches=%d queries=%d/%d, hits=%d+%d, tests=%d+%d, adds=%d", | |
| 203 pc_desc_resets, | |
| 204 pc_desc_queries, pc_desc_approx, | |
| 205 pc_desc_repeats, pc_desc_hits, | |
| 206 pc_desc_tests, pc_desc_searches, pc_desc_adds); | |
| 207 } | |
| 208 } nmethod_stats; | |
| 209 #endif //PRODUCT | |
| 210 | |
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211 |
| 0 | 212 //--------------------------------------------------------------------------------- |
| 213 | |
| 214 | |
| 215 ExceptionCache::ExceptionCache(Handle exception, address pc, address handler) { | |
| 216 assert(pc != NULL, "Must be non null"); | |
| 217 assert(exception.not_null(), "Must be non null"); | |
| 218 assert(handler != NULL, "Must be non null"); | |
| 219 | |
| 220 _count = 0; | |
| 221 _exception_type = exception->klass(); | |
| 222 _next = NULL; | |
| 223 | |
| 224 add_address_and_handler(pc,handler); | |
| 225 } | |
| 226 | |
| 227 | |
| 228 address ExceptionCache::match(Handle exception, address pc) { | |
| 229 assert(pc != NULL,"Must be non null"); | |
| 230 assert(exception.not_null(),"Must be non null"); | |
| 231 if (exception->klass() == exception_type()) { | |
| 232 return (test_address(pc)); | |
| 233 } | |
| 234 | |
| 235 return NULL; | |
| 236 } | |
| 237 | |
| 238 | |
| 239 bool ExceptionCache::match_exception_with_space(Handle exception) { | |
| 240 assert(exception.not_null(),"Must be non null"); | |
| 241 if (exception->klass() == exception_type() && count() < cache_size) { | |
| 242 return true; | |
| 243 } | |
| 244 return false; | |
| 245 } | |
| 246 | |
| 247 | |
| 248 address ExceptionCache::test_address(address addr) { | |
| 249 for (int i=0; i<count(); i++) { | |
| 250 if (pc_at(i) == addr) { | |
| 251 return handler_at(i); | |
| 252 } | |
| 253 } | |
| 254 return NULL; | |
| 255 } | |
| 256 | |
| 257 | |
| 258 bool ExceptionCache::add_address_and_handler(address addr, address handler) { | |
| 259 if (test_address(addr) == handler) return true; | |
| 260 if (count() < cache_size) { | |
| 261 set_pc_at(count(),addr); | |
| 262 set_handler_at(count(), handler); | |
| 263 increment_count(); | |
| 264 return true; | |
| 265 } | |
| 266 return false; | |
| 267 } | |
| 268 | |
| 269 | |
| 270 // private method for handling exception cache | |
| 271 // These methods are private, and used to manipulate the exception cache | |
| 272 // directly. | |
| 273 ExceptionCache* nmethod::exception_cache_entry_for_exception(Handle exception) { | |
| 274 ExceptionCache* ec = exception_cache(); | |
| 275 while (ec != NULL) { | |
| 276 if (ec->match_exception_with_space(exception)) { | |
| 277 return ec; | |
| 278 } | |
| 279 ec = ec->next(); | |
| 280 } | |
| 281 return NULL; | |
| 282 } | |
| 283 | |
| 284 | |
| 285 //----------------------------------------------------------------------------- | |
| 286 | |
| 287 | |
| 288 // Helper used by both find_pc_desc methods. | |
| 289 static inline bool match_desc(PcDesc* pc, int pc_offset, bool approximate) { | |
| 290 NOT_PRODUCT(++nmethod_stats.pc_desc_tests); | |
| 291 if (!approximate) | |
| 292 return pc->pc_offset() == pc_offset; | |
| 293 else | |
| 294 return (pc-1)->pc_offset() < pc_offset && pc_offset <= pc->pc_offset(); | |
| 295 } | |
| 296 | |
| 297 void PcDescCache::reset_to(PcDesc* initial_pc_desc) { | |
| 298 if (initial_pc_desc == NULL) { | |
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299 _pc_descs[0] = NULL; // native method; no PcDescs at all |
| 0 | 300 return; |
| 301 } | |
| 302 NOT_PRODUCT(++nmethod_stats.pc_desc_resets); | |
| 303 // reset the cache by filling it with benign (non-null) values | |
| 304 assert(initial_pc_desc->pc_offset() < 0, "must be sentinel"); | |
| 305 for (int i = 0; i < cache_size; i++) | |
| 306 _pc_descs[i] = initial_pc_desc; | |
| 307 } | |
| 308 | |
| 309 PcDesc* PcDescCache::find_pc_desc(int pc_offset, bool approximate) { | |
| 310 NOT_PRODUCT(++nmethod_stats.pc_desc_queries); | |
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311 NOT_PRODUCT(if (approximate) ++nmethod_stats.pc_desc_approx); |
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312 |
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313 // Note: one might think that caching the most recently |
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314 // read value separately would be a win, but one would be |
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315 // wrong. When many threads are updating it, the cache |
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316 // line it's in would bounce between caches, negating |
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317 // any benefit. |
| 0 | 318 |
| 319 // In order to prevent race conditions do not load cache elements | |
| 320 // repeatedly, but use a local copy: | |
| 321 PcDesc* res; | |
| 322 | |
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323 // Step one: Check the most recently added value. |
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324 res = _pc_descs[0]; |
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325 if (res == NULL) return NULL; // native method; no PcDescs at all |
| 0 | 326 if (match_desc(res, pc_offset, approximate)) { |
| 327 NOT_PRODUCT(++nmethod_stats.pc_desc_repeats); | |
| 328 return res; | |
| 329 } | |
| 330 | |
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331 // Step two: Check the rest of the LRU cache. |
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332 for (int i = 1; i < cache_size; ++i) { |
| 0 | 333 res = _pc_descs[i]; |
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334 if (res->pc_offset() < 0) break; // optimization: skip empty cache |
| 0 | 335 if (match_desc(res, pc_offset, approximate)) { |
| 336 NOT_PRODUCT(++nmethod_stats.pc_desc_hits); | |
| 337 return res; | |
| 338 } | |
| 339 } | |
| 340 | |
| 341 // Report failure. | |
| 342 return NULL; | |
| 343 } | |
| 344 | |
| 345 void PcDescCache::add_pc_desc(PcDesc* pc_desc) { | |
| 346 NOT_PRODUCT(++nmethod_stats.pc_desc_adds); | |
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347 // Update the LRU cache by shifting pc_desc forward. |
| 0 | 348 for (int i = 0; i < cache_size; i++) { |
| 349 PcDesc* next = _pc_descs[i]; | |
| 350 _pc_descs[i] = pc_desc; | |
| 351 pc_desc = next; | |
| 352 } | |
| 353 } | |
| 354 | |
| 355 // adjust pcs_size so that it is a multiple of both oopSize and | |
| 356 // sizeof(PcDesc) (assumes that if sizeof(PcDesc) is not a multiple | |
| 357 // of oopSize, then 2*sizeof(PcDesc) is) | |
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358 static int adjust_pcs_size(int pcs_size) { |
| 0 | 359 int nsize = round_to(pcs_size, oopSize); |
| 360 if ((nsize % sizeof(PcDesc)) != 0) { | |
| 361 nsize = pcs_size + sizeof(PcDesc); | |
| 362 } | |
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363 assert((nsize % oopSize) == 0, "correct alignment"); |
| 0 | 364 return nsize; |
| 365 } | |
| 366 | |
| 367 //----------------------------------------------------------------------------- | |
| 368 | |
| 369 | |
| 370 void nmethod::add_exception_cache_entry(ExceptionCache* new_entry) { | |
| 371 assert(ExceptionCache_lock->owned_by_self(),"Must hold the ExceptionCache_lock"); | |
| 372 assert(new_entry != NULL,"Must be non null"); | |
| 373 assert(new_entry->next() == NULL, "Must be null"); | |
| 374 | |
| 375 if (exception_cache() != NULL) { | |
| 376 new_entry->set_next(exception_cache()); | |
| 377 } | |
| 378 set_exception_cache(new_entry); | |
| 379 } | |
| 380 | |
| 381 void nmethod::remove_from_exception_cache(ExceptionCache* ec) { | |
| 382 ExceptionCache* prev = NULL; | |
| 383 ExceptionCache* curr = exception_cache(); | |
| 384 assert(curr != NULL, "nothing to remove"); | |
| 385 // find the previous and next entry of ec | |
| 386 while (curr != ec) { | |
| 387 prev = curr; | |
| 388 curr = curr->next(); | |
| 389 assert(curr != NULL, "ExceptionCache not found"); | |
| 390 } | |
| 391 // now: curr == ec | |
| 392 ExceptionCache* next = curr->next(); | |
| 393 if (prev == NULL) { | |
| 394 set_exception_cache(next); | |
| 395 } else { | |
| 396 prev->set_next(next); | |
| 397 } | |
| 398 delete curr; | |
| 399 } | |
| 400 | |
| 401 | |
| 402 // public method for accessing the exception cache | |
| 403 // These are the public access methods. | |
| 404 address nmethod::handler_for_exception_and_pc(Handle exception, address pc) { | |
| 405 // We never grab a lock to read the exception cache, so we may | |
| 406 // have false negatives. This is okay, as it can only happen during | |
| 407 // the first few exception lookups for a given nmethod. | |
| 408 ExceptionCache* ec = exception_cache(); | |
| 409 while (ec != NULL) { | |
| 410 address ret_val; | |
| 411 if ((ret_val = ec->match(exception,pc)) != NULL) { | |
| 412 return ret_val; | |
| 413 } | |
| 414 ec = ec->next(); | |
| 415 } | |
| 416 return NULL; | |
| 417 } | |
| 418 | |
| 419 | |
| 420 void nmethod::add_handler_for_exception_and_pc(Handle exception, address pc, address handler) { | |
| 421 // There are potential race conditions during exception cache updates, so we | |
| 422 // must own the ExceptionCache_lock before doing ANY modifications. Because | |
| 605 | 423 // we don't lock during reads, it is possible to have several threads attempt |
| 0 | 424 // to update the cache with the same data. We need to check for already inserted |
| 425 // copies of the current data before adding it. | |
| 426 | |
| 427 MutexLocker ml(ExceptionCache_lock); | |
| 428 ExceptionCache* target_entry = exception_cache_entry_for_exception(exception); | |
| 429 | |
| 430 if (target_entry == NULL || !target_entry->add_address_and_handler(pc,handler)) { | |
| 431 target_entry = new ExceptionCache(exception,pc,handler); | |
| 432 add_exception_cache_entry(target_entry); | |
| 433 } | |
| 434 } | |
| 435 | |
| 436 | |
| 437 //-------------end of code for ExceptionCache-------------- | |
| 438 | |
| 439 | |
| 440 int nmethod::total_size() const { | |
| 441 return | |
|
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442 consts_size() + |
| 1748 | 443 insts_size() + |
| 0 | 444 stub_size() + |
| 445 scopes_data_size() + | |
| 446 scopes_pcs_size() + | |
| 447 handler_table_size() + | |
| 448 nul_chk_table_size(); | |
| 449 } | |
| 450 | |
| 451 const char* nmethod::compile_kind() const { | |
| 452 if (is_osr_method()) return "osr"; | |
|
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453 if (method() != NULL && is_native_method()) return "c2n"; |
| 0 | 454 return NULL; |
| 455 } | |
| 456 | |
|
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457 // Fill in default values for various flag fields |
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458 void nmethod::init_defaults() { |
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459 _state = alive; |
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460 _marked_for_reclamation = 0; |
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461 _has_flushed_dependencies = 0; |
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462 _speculatively_disconnected = 0; |
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463 _has_unsafe_access = 0; |
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464 _has_method_handle_invokes = 0; |
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465 _lazy_critical_native = 0; |
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466 _has_wide_vectors = 0; |
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467 _marked_for_deoptimization = 0; |
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468 _lock_count = 0; |
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469 _stack_traversal_mark = 0; |
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470 _unload_reported = false; // jvmti state |
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471 |
| 1726 | 472 #ifdef ASSERT |
| 473 _oops_are_stale = false; | |
| 474 #endif | |
| 475 | |
|
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476 _oops_do_mark_link = NULL; |
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477 _jmethod_id = NULL; |
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478 _osr_link = NULL; |
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479 _scavenge_root_link = NULL; |
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480 _scavenge_root_state = 0; |
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481 _saved_nmethod_link = NULL; |
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482 _compiler = NULL; |
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483 |
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484 #ifdef HAVE_DTRACE_H |
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485 _trap_offset = 0; |
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486 #endif // def HAVE_DTRACE_H |
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487 } |
| 0 | 488 |
| 489 nmethod* nmethod::new_native_nmethod(methodHandle method, | |
|
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490 int compile_id, |
| 0 | 491 CodeBuffer *code_buffer, |
| 492 int vep_offset, | |
| 493 int frame_complete, | |
| 494 int frame_size, | |
| 495 ByteSize basic_lock_owner_sp_offset, | |
| 496 ByteSize basic_lock_sp_offset, | |
| 497 OopMapSet* oop_maps) { | |
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498 code_buffer->finalize_oop_references(method); |
| 0 | 499 // create nmethod |
| 500 nmethod* nm = NULL; | |
| 501 { | |
| 502 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
| 503 int native_nmethod_size = allocation_size(code_buffer, sizeof(nmethod)); | |
|
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504 CodeOffsets offsets; |
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505 offsets.set_value(CodeOffsets::Verified_Entry, vep_offset); |
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506 offsets.set_value(CodeOffsets::Frame_Complete, frame_complete); |
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507 nm = new (native_nmethod_size) nmethod(method(), native_nmethod_size, |
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508 compile_id, &offsets, |
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509 code_buffer, frame_size, |
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510 basic_lock_owner_sp_offset, |
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511 basic_lock_sp_offset, oop_maps); |
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512 NOT_PRODUCT(if (nm != NULL) nmethod_stats.note_native_nmethod(nm)); |
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513 if (PrintAssembly && nm != NULL) { |
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514 Disassembler::decode(nm); |
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515 } |
| 0 | 516 } |
| 517 // verify nmethod | |
| 518 debug_only(if (nm) nm->verify();) // might block | |
| 519 | |
| 520 if (nm != NULL) { | |
| 521 nm->log_new_nmethod(); | |
| 522 } | |
| 523 | |
| 524 return nm; | |
| 525 } | |
| 526 | |
|
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527 #ifdef HAVE_DTRACE_H |
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528 nmethod* nmethod::new_dtrace_nmethod(methodHandle method, |
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529 CodeBuffer *code_buffer, |
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530 int vep_offset, |
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531 int trap_offset, |
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532 int frame_complete, |
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533 int frame_size) { |
|
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534 code_buffer->finalize_oop_references(method); |
|
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535 // create nmethod |
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536 nmethod* nm = NULL; |
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537 { |
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538 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
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539 int nmethod_size = allocation_size(code_buffer, sizeof(nmethod)); |
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540 CodeOffsets offsets; |
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541 offsets.set_value(CodeOffsets::Verified_Entry, vep_offset); |
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542 offsets.set_value(CodeOffsets::Dtrace_trap, trap_offset); |
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543 offsets.set_value(CodeOffsets::Frame_Complete, frame_complete); |
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544 |
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545 nm = new (nmethod_size) nmethod(method(), nmethod_size, |
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546 &offsets, code_buffer, frame_size); |
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547 |
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548 NOT_PRODUCT(if (nm != NULL) nmethod_stats.note_nmethod(nm)); |
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549 if (PrintAssembly && nm != NULL) { |
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550 Disassembler::decode(nm); |
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551 } |
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552 } |
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553 // verify nmethod |
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554 debug_only(if (nm) nm->verify();) // might block |
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555 |
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556 if (nm != NULL) { |
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557 nm->log_new_nmethod(); |
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558 } |
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559 |
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560 return nm; |
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561 } |
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562 |
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563 #endif // def HAVE_DTRACE_H |
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564 |
| 0 | 565 nmethod* nmethod::new_nmethod(methodHandle method, |
| 566 int compile_id, | |
| 567 int entry_bci, | |
| 568 CodeOffsets* offsets, | |
| 569 int orig_pc_offset, | |
| 570 DebugInformationRecorder* debug_info, | |
| 571 Dependencies* dependencies, | |
| 572 CodeBuffer* code_buffer, int frame_size, | |
| 573 OopMapSet* oop_maps, | |
| 574 ExceptionHandlerTable* handler_table, | |
| 575 ImplicitExceptionTable* nul_chk_table, | |
| 576 AbstractCompiler* compiler, | |
| 577 int comp_level | |
| 578 ) | |
| 579 { | |
| 580 assert(debug_info->oop_recorder() == code_buffer->oop_recorder(), "shared OR"); | |
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581 code_buffer->finalize_oop_references(method); |
| 0 | 582 // create nmethod |
| 583 nmethod* nm = NULL; | |
| 584 { MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
| 585 int nmethod_size = | |
| 586 allocation_size(code_buffer, sizeof(nmethod)) | |
| 587 + adjust_pcs_size(debug_info->pcs_size()) | |
| 588 + round_to(dependencies->size_in_bytes() , oopSize) | |
| 589 + round_to(handler_table->size_in_bytes(), oopSize) | |
| 590 + round_to(nul_chk_table->size_in_bytes(), oopSize) | |
| 591 + round_to(debug_info->data_size() , oopSize); | |
|
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592 |
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593 nm = new (nmethod_size) |
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594 nmethod(method(), nmethod_size, compile_id, entry_bci, offsets, |
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595 orig_pc_offset, debug_info, dependencies, code_buffer, frame_size, |
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596 oop_maps, |
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597 handler_table, |
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598 nul_chk_table, |
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599 compiler, |
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600 comp_level); |
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601 |
| 0 | 602 if (nm != NULL) { |
| 603 // To make dependency checking during class loading fast, record | |
| 604 // the nmethod dependencies in the classes it is dependent on. | |
| 605 // This allows the dependency checking code to simply walk the | |
| 606 // class hierarchy above the loaded class, checking only nmethods | |
| 607 // which are dependent on those classes. The slow way is to | |
| 608 // check every nmethod for dependencies which makes it linear in | |
| 609 // the number of methods compiled. For applications with a lot | |
| 610 // classes the slow way is too slow. | |
| 611 for (Dependencies::DepStream deps(nm); deps.next(); ) { | |
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612 Klass* klass = deps.context_type(); |
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613 if (klass == NULL) { |
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614 continue; // ignore things like evol_method |
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615 } |
| 0 | 616 |
| 617 // record this nmethod as dependent on this klass | |
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618 InstanceKlass::cast(klass)->add_dependent_nmethod(nm); |
| 0 | 619 } |
| 620 } | |
| 621 NOT_PRODUCT(if (nm != NULL) nmethod_stats.note_nmethod(nm)); | |
|
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622 if (PrintAssembly && nm != NULL) { |
| 0 | 623 Disassembler::decode(nm); |
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624 } |
| 0 | 625 } |
| 626 | |
| 627 // verify nmethod | |
| 628 debug_only(if (nm) nm->verify();) // might block | |
| 629 | |
| 630 if (nm != NULL) { | |
| 631 nm->log_new_nmethod(); | |
| 632 } | |
| 633 | |
| 634 // done | |
| 635 return nm; | |
| 636 } | |
| 637 | |
| 638 | |
| 639 // For native wrappers | |
| 640 nmethod::nmethod( | |
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641 Method* method, |
| 0 | 642 int nmethod_size, |
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643 int compile_id, |
| 0 | 644 CodeOffsets* offsets, |
| 645 CodeBuffer* code_buffer, | |
| 646 int frame_size, | |
| 647 ByteSize basic_lock_owner_sp_offset, | |
| 648 ByteSize basic_lock_sp_offset, | |
| 649 OopMapSet* oop_maps ) | |
| 650 : CodeBlob("native nmethod", code_buffer, sizeof(nmethod), | |
| 651 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, oop_maps), | |
| 2019 | 652 _native_receiver_sp_offset(basic_lock_owner_sp_offset), |
| 653 _native_basic_lock_sp_offset(basic_lock_sp_offset) | |
| 0 | 654 { |
| 655 { | |
| 656 debug_only(No_Safepoint_Verifier nsv;) | |
| 657 assert_locked_or_safepoint(CodeCache_lock); | |
| 658 | |
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659 init_defaults(); |
| 0 | 660 _method = method; |
| 661 _entry_bci = InvocationEntryBci; | |
| 662 // We have no exception handler or deopt handler make the | |
| 663 // values something that will never match a pc like the nmethod vtable entry | |
| 664 _exception_offset = 0; | |
| 665 _deoptimize_offset = 0; | |
| 1204 | 666 _deoptimize_mh_offset = 0; |
| 0 | 667 _orig_pc_offset = 0; |
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668 |
| 1748 | 669 _consts_offset = data_offset(); |
| 0 | 670 _stub_offset = data_offset(); |
|
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671 _oops_offset = data_offset(); |
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672 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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673 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
| 0 | 674 _scopes_pcs_offset = _scopes_data_offset; |
| 675 _dependencies_offset = _scopes_pcs_offset; | |
| 676 _handler_table_offset = _dependencies_offset; | |
| 677 _nul_chk_table_offset = _handler_table_offset; | |
| 678 _nmethod_end_offset = _nul_chk_table_offset; | |
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679 _compile_id = compile_id; |
| 0 | 680 _comp_level = CompLevel_none; |
| 1748 | 681 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
| 682 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
| 0 | 683 _osr_entry_point = NULL; |
| 684 _exception_cache = NULL; | |
| 685 _pc_desc_cache.reset_to(NULL); | |
| 686 | |
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687 code_buffer->copy_values_to(this); |
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688 if (ScavengeRootsInCode && detect_scavenge_root_oops()) { |
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689 CodeCache::add_scavenge_root_nmethod(this); |
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690 } |
|
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691 debug_only(verify_scavenge_root_oops()); |
| 0 | 692 CodeCache::commit(this); |
| 693 } | |
| 694 | |
| 695 if (PrintNativeNMethods || PrintDebugInfo || PrintRelocations || PrintDependencies) { | |
| 696 ttyLocker ttyl; // keep the following output all in one block | |
| 697 // This output goes directly to the tty, not the compiler log. | |
| 698 // To enable tools to match it up with the compilation activity, | |
| 699 // be sure to tag this tty output with the compile ID. | |
| 700 if (xtty != NULL) { | |
| 701 xtty->begin_head("print_native_nmethod"); | |
| 702 xtty->method(_method); | |
| 703 xtty->stamp(); | |
| 704 xtty->end_head(" address='" INTPTR_FORMAT "'", (intptr_t) this); | |
| 705 } | |
| 706 // print the header part first | |
| 707 print(); | |
| 708 // then print the requested information | |
| 709 if (PrintNativeNMethods) { | |
| 710 print_code(); | |
|
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711 if (oop_maps != NULL) { |
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712 oop_maps->print(); |
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713 } |
| 0 | 714 } |
| 715 if (PrintRelocations) { | |
| 716 print_relocations(); | |
| 717 } | |
| 718 if (xtty != NULL) { | |
| 719 xtty->tail("print_native_nmethod"); | |
| 720 } | |
| 721 } | |
| 722 } | |
| 723 | |
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724 // For dtrace wrappers |
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725 #ifdef HAVE_DTRACE_H |
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726 nmethod::nmethod( |
|
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727 Method* method, |
|
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728 int nmethod_size, |
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729 CodeOffsets* offsets, |
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730 CodeBuffer* code_buffer, |
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731 int frame_size) |
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732 : CodeBlob("dtrace nmethod", code_buffer, sizeof(nmethod), |
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733 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, NULL), |
| 2019 | 734 _native_receiver_sp_offset(in_ByteSize(-1)), |
| 735 _native_basic_lock_sp_offset(in_ByteSize(-1)) | |
|
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736 { |
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737 { |
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738 debug_only(No_Safepoint_Verifier nsv;) |
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739 assert_locked_or_safepoint(CodeCache_lock); |
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740 |
|
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741 init_defaults(); |
|
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742 _method = method; |
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743 _entry_bci = InvocationEntryBci; |
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744 // We have no exception handler or deopt handler make the |
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745 // values something that will never match a pc like the nmethod vtable entry |
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746 _exception_offset = 0; |
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747 _deoptimize_offset = 0; |
| 1204 | 748 _deoptimize_mh_offset = 0; |
|
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749 _unwind_handler_offset = -1; |
|
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750 _trap_offset = offsets->value(CodeOffsets::Dtrace_trap); |
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751 _orig_pc_offset = 0; |
| 1748 | 752 _consts_offset = data_offset(); |
|
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753 _stub_offset = data_offset(); |
|
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754 _oops_offset = data_offset(); |
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755 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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756 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
|
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757 _scopes_pcs_offset = _scopes_data_offset; |
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758 _dependencies_offset = _scopes_pcs_offset; |
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759 _handler_table_offset = _dependencies_offset; |
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760 _nul_chk_table_offset = _handler_table_offset; |
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761 _nmethod_end_offset = _nul_chk_table_offset; |
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762 _compile_id = 0; // default |
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763 _comp_level = CompLevel_none; |
| 1748 | 764 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
| 765 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
|
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766 _osr_entry_point = NULL; |
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767 _exception_cache = NULL; |
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768 _pc_desc_cache.reset_to(NULL); |
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769 |
|
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770 code_buffer->copy_values_to(this); |
|
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771 debug_only(verify_scavenge_root_oops()); |
|
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772 CodeCache::commit(this); |
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773 } |
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|
774 |
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775 if (PrintNMethods || PrintDebugInfo || PrintRelocations || PrintDependencies) { |
|
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776 ttyLocker ttyl; // keep the following output all in one block |
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777 // This output goes directly to the tty, not the compiler log. |
|
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778 // To enable tools to match it up with the compilation activity, |
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779 // be sure to tag this tty output with the compile ID. |
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780 if (xtty != NULL) { |
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781 xtty->begin_head("print_dtrace_nmethod"); |
|
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782 xtty->method(_method); |
|
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783 xtty->stamp(); |
|
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784 xtty->end_head(" address='" INTPTR_FORMAT "'", (intptr_t) this); |
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785 } |
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786 // print the header part first |
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787 print(); |
|
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788 // then print the requested information |
|
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789 if (PrintNMethods) { |
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790 print_code(); |
|
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791 } |
|
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792 if (PrintRelocations) { |
|
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793 print_relocations(); |
|
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794 } |
|
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795 if (xtty != NULL) { |
|
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796 xtty->tail("print_dtrace_nmethod"); |
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797 } |
|
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798 } |
|
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799 } |
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800 #endif // def HAVE_DTRACE_H |
| 0 | 801 |
|
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802 void* nmethod::operator new(size_t size, int nmethod_size) throw () { |
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803 // Not critical, may return null if there is too little continuous memory |
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804 return CodeCache::allocate(nmethod_size); |
| 0 | 805 } |
| 806 | |
| 807 nmethod::nmethod( | |
|
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808 Method* method, |
| 0 | 809 int nmethod_size, |
| 810 int compile_id, | |
| 811 int entry_bci, | |
| 812 CodeOffsets* offsets, | |
| 813 int orig_pc_offset, | |
| 814 DebugInformationRecorder* debug_info, | |
| 815 Dependencies* dependencies, | |
| 816 CodeBuffer *code_buffer, | |
| 817 int frame_size, | |
| 818 OopMapSet* oop_maps, | |
| 819 ExceptionHandlerTable* handler_table, | |
| 820 ImplicitExceptionTable* nul_chk_table, | |
| 821 AbstractCompiler* compiler, | |
| 822 int comp_level | |
| 823 ) | |
| 824 : CodeBlob("nmethod", code_buffer, sizeof(nmethod), | |
| 825 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, oop_maps), | |
| 2019 | 826 _native_receiver_sp_offset(in_ByteSize(-1)), |
| 827 _native_basic_lock_sp_offset(in_ByteSize(-1)) | |
| 0 | 828 { |
| 829 assert(debug_info->oop_recorder() == code_buffer->oop_recorder(), "shared OR"); | |
| 830 { | |
| 831 debug_only(No_Safepoint_Verifier nsv;) | |
| 832 assert_locked_or_safepoint(CodeCache_lock); | |
| 833 | |
|
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834 init_defaults(); |
| 0 | 835 _method = method; |
|
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836 _entry_bci = entry_bci; |
| 0 | 837 _compile_id = compile_id; |
| 838 _comp_level = comp_level; | |
| 839 _compiler = compiler; | |
| 840 _orig_pc_offset = orig_pc_offset; | |
| 1748 | 841 |
| 842 // Section offsets | |
|
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843 _consts_offset = content_offset() + code_buffer->total_offset_of(code_buffer->consts()); |
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844 _stub_offset = content_offset() + code_buffer->total_offset_of(code_buffer->stubs()); |
| 0 | 845 |
| 846 // Exception handler and deopt handler are in the stub section | |
|
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847 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must be set"); |
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848 assert(offsets->value(CodeOffsets::Deopt ) != -1, "must be set"); |
| 1748 | 849 _exception_offset = _stub_offset + offsets->value(CodeOffsets::Exceptions); |
| 850 _deoptimize_offset = _stub_offset + offsets->value(CodeOffsets::Deopt); | |
|
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851 if (offsets->value(CodeOffsets::DeoptMH) != -1) { |
|
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852 _deoptimize_mh_offset = _stub_offset + offsets->value(CodeOffsets::DeoptMH); |
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853 } else { |
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854 _deoptimize_mh_offset = -1; |
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855 } |
|
1378
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856 if (offsets->value(CodeOffsets::UnwindHandler) != -1) { |
| 1748 | 857 _unwind_handler_offset = code_offset() + offsets->value(CodeOffsets::UnwindHandler); |
|
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858 } else { |
| 1748 | 859 _unwind_handler_offset = -1; |
|
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860 } |
| 1748 | 861 |
|
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862 _oops_offset = data_offset(); |
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863 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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864 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
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865 |
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866 _scopes_pcs_offset = _scopes_data_offset + round_to(debug_info->data_size (), oopSize); |
| 0 | 867 _dependencies_offset = _scopes_pcs_offset + adjust_pcs_size(debug_info->pcs_size()); |
| 868 _handler_table_offset = _dependencies_offset + round_to(dependencies->size_in_bytes (), oopSize); | |
| 869 _nul_chk_table_offset = _handler_table_offset + round_to(handler_table->size_in_bytes(), oopSize); | |
| 870 _nmethod_end_offset = _nul_chk_table_offset + round_to(nul_chk_table->size_in_bytes(), oopSize); | |
| 871 | |
| 1748 | 872 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
| 873 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
| 874 _osr_entry_point = code_begin() + offsets->value(CodeOffsets::OSR_Entry); | |
| 0 | 875 _exception_cache = NULL; |
| 876 _pc_desc_cache.reset_to(scopes_pcs_begin()); | |
| 877 | |
| 878 // Copy contents of ScopeDescRecorder to nmethod | |
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879 code_buffer->copy_values_to(this); |
| 0 | 880 debug_info->copy_to(this); |
| 881 dependencies->copy_to(this); | |
|
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882 if (ScavengeRootsInCode && detect_scavenge_root_oops()) { |
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883 CodeCache::add_scavenge_root_nmethod(this); |
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884 } |
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885 debug_only(verify_scavenge_root_oops()); |
| 0 | 886 |
| 887 CodeCache::commit(this); | |
| 888 | |
| 889 // Copy contents of ExceptionHandlerTable to nmethod | |
| 890 handler_table->copy_to(this); | |
| 891 nul_chk_table->copy_to(this); | |
| 892 | |
| 893 // we use the information of entry points to find out if a method is | |
| 894 // static or non static | |
| 895 assert(compiler->is_c2() || | |
| 896 _method->is_static() == (entry_point() == _verified_entry_point), | |
| 897 " entry points must be same for static methods and vice versa"); | |
| 898 } | |
| 899 | |
|
100
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900 bool printnmethods = PrintNMethods |
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901 || CompilerOracle::should_print(_method) |
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902 || CompilerOracle::has_option_string(_method, "PrintNMethods"); |
| 0 | 903 if (printnmethods || PrintDebugInfo || PrintRelocations || PrintDependencies || PrintExceptionHandlers) { |
| 904 print_nmethod(printnmethods); | |
| 905 } | |
| 906 } | |
| 907 | |
| 908 | |
| 909 // Print a short set of xml attributes to identify this nmethod. The | |
| 910 // output should be embedded in some other element. | |
| 911 void nmethod::log_identity(xmlStream* log) const { | |
| 912 log->print(" compile_id='%d'", compile_id()); | |
| 913 const char* nm_kind = compile_kind(); | |
| 914 if (nm_kind != NULL) log->print(" compile_kind='%s'", nm_kind); | |
| 915 if (compiler() != NULL) { | |
| 916 log->print(" compiler='%s'", compiler()->name()); | |
| 917 } | |
| 1783 | 918 if (TieredCompilation) { |
| 919 log->print(" level='%d'", comp_level()); | |
| 920 } | |
| 0 | 921 } |
| 922 | |
| 923 | |
| 924 #define LOG_OFFSET(log, name) \ | |
| 925 if ((intptr_t)name##_end() - (intptr_t)name##_begin()) \ | |
| 926 log->print(" " XSTR(name) "_offset='%d'" , \ | |
| 927 (intptr_t)name##_begin() - (intptr_t)this) | |
| 928 | |
| 929 | |
| 930 void nmethod::log_new_nmethod() const { | |
| 931 if (LogCompilation && xtty != NULL) { | |
| 932 ttyLocker ttyl; | |
| 933 HandleMark hm; | |
| 934 xtty->begin_elem("nmethod"); | |
| 935 log_identity(xtty); | |
| 1748 | 936 xtty->print(" entry='" INTPTR_FORMAT "' size='%d'", code_begin(), size()); |
| 0 | 937 xtty->print(" address='" INTPTR_FORMAT "'", (intptr_t) this); |
| 938 | |
| 939 LOG_OFFSET(xtty, relocation); | |
|
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940 LOG_OFFSET(xtty, consts); |
| 1748 | 941 LOG_OFFSET(xtty, insts); |
| 0 | 942 LOG_OFFSET(xtty, stub); |
| 943 LOG_OFFSET(xtty, scopes_data); | |
| 944 LOG_OFFSET(xtty, scopes_pcs); | |
| 945 LOG_OFFSET(xtty, dependencies); | |
| 946 LOG_OFFSET(xtty, handler_table); | |
| 947 LOG_OFFSET(xtty, nul_chk_table); | |
| 948 LOG_OFFSET(xtty, oops); | |
| 949 | |
| 950 xtty->method(method()); | |
| 951 xtty->stamp(); | |
| 952 xtty->end_elem(); | |
| 953 } | |
| 954 } | |
| 955 | |
| 956 #undef LOG_OFFSET | |
| 957 | |
| 958 | |
| 959 // Print out more verbose output usually for a newly created nmethod. | |
|
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960 void nmethod::print_on(outputStream* st, const char* msg) const { |
| 0 | 961 if (st != NULL) { |
| 962 ttyLocker ttyl; | |
|
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963 if (WizardMode) { |
|
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964 CompileTask::print_compilation(st, this, msg, /*short_form:*/ true); |
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965 st->print_cr(" (" INTPTR_FORMAT ")", this); |
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966 } else { |
|
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967 CompileTask::print_compilation(st, this, msg, /*short_form:*/ false); |
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968 } |
| 0 | 969 } |
| 970 } | |
| 971 | |
| 972 | |
| 973 void nmethod::print_nmethod(bool printmethod) { | |
| 974 ttyLocker ttyl; // keep the following output all in one block | |
| 975 if (xtty != NULL) { | |
| 976 xtty->begin_head("print_nmethod"); | |
| 977 xtty->stamp(); | |
| 978 xtty->end_head(); | |
| 979 } | |
| 980 // print the header part first | |
| 981 print(); | |
| 982 // then print the requested information | |
| 983 if (printmethod) { | |
| 984 print_code(); | |
| 985 print_pcs(); | |
|
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986 if (oop_maps()) { |
|
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987 oop_maps()->print(); |
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988 } |
| 0 | 989 } |
| 990 if (PrintDebugInfo) { | |
| 991 print_scopes(); | |
| 992 } | |
| 993 if (PrintRelocations) { | |
| 994 print_relocations(); | |
| 995 } | |
| 996 if (PrintDependencies) { | |
| 997 print_dependencies(); | |
| 998 } | |
| 999 if (PrintExceptionHandlers) { | |
| 1000 print_handler_table(); | |
| 1001 print_nul_chk_table(); | |
| 1002 } | |
| 1003 if (xtty != NULL) { | |
| 1004 xtty->tail("print_nmethod"); | |
| 1005 } | |
| 1006 } | |
| 1007 | |
| 1008 | |
|
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1009 // Promote one word from an assembly-time handle to a live embedded oop. |
|
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1010 inline void nmethod::initialize_immediate_oop(oop* dest, jobject handle) { |
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1011 if (handle == NULL || |
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1012 // As a special case, IC oops are initialized to 1 or -1. |
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1013 handle == (jobject) Universe::non_oop_word()) { |
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1014 (*dest) = (oop) handle; |
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1015 } else { |
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1016 (*dest) = JNIHandles::resolve_non_null(handle); |
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1017 } |
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1018 } |
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1019 |
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1020 |
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1021 // Have to have the same name because it's called by a template |
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1022 void nmethod::copy_values(GrowableArray<jobject>* array) { |
|
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1023 int length = array->length(); |
|
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1024 assert((address)(oops_begin() + length) <= (address)oops_end(), "oops big enough"); |
|
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1025 oop* dest = oops_begin(); |
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1026 for (int index = 0 ; index < length; index++) { |
|
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1027 initialize_immediate_oop(&dest[index], array->at(index)); |
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1028 } |
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1029 |
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1030 // Now we can fix up all the oops in the code. We need to do this |
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1031 // in the code because the assembler uses jobjects as placeholders. |
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1032 // The code and relocations have already been initialized by the |
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1033 // CodeBlob constructor, so it is valid even at this early point to |
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1034 // iterate over relocations and patch the code. |
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1035 fix_oop_relocations(NULL, NULL, /*initialize_immediates=*/ true); |
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1036 } |
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1037 |
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1038 void nmethod::copy_values(GrowableArray<Metadata*>* array) { |
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1039 int length = array->length(); |
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1040 assert((address)(metadata_begin() + length) <= (address)metadata_end(), "big enough"); |
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1041 Metadata** dest = metadata_begin(); |
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1042 for (int index = 0 ; index < length; index++) { |
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1043 dest[index] = array->at(index); |
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1044 } |
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1045 } |
|
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1046 |
|
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1047 bool nmethod::is_at_poll_return(address pc) { |
|
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1048 RelocIterator iter(this, pc, pc+1); |
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1049 while (iter.next()) { |
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1050 if (iter.type() == relocInfo::poll_return_type) |
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1051 return true; |
|
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1052 } |
|
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1053 return false; |
|
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1054 } |
|
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1055 |
|
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1056 |
|
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1057 bool nmethod::is_at_poll_or_poll_return(address pc) { |
|
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1058 RelocIterator iter(this, pc, pc+1); |
|
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1059 while (iter.next()) { |
|
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1060 relocInfo::relocType t = iter.type(); |
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1061 if (t == relocInfo::poll_return_type || t == relocInfo::poll_type) |
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1062 return true; |
|
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1063 } |
|
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1064 return false; |
|
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1065 } |
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1066 |
|
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1067 |
|
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1068 void nmethod::fix_oop_relocations(address begin, address end, bool initialize_immediates) { |
|
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1069 // re-patch all oop-bearing instructions, just in case some oops moved |
|
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1070 RelocIterator iter(this, begin, end); |
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1071 while (iter.next()) { |
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1072 if (iter.type() == relocInfo::oop_type) { |
|
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1073 oop_Relocation* reloc = iter.oop_reloc(); |
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1074 if (initialize_immediates && reloc->oop_is_immediate()) { |
|
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1075 oop* dest = reloc->oop_addr(); |
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1076 initialize_immediate_oop(dest, (jobject) *dest); |
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1077 } |
|
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1078 // Refresh the oop-related bits of this instruction. |
|
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1079 reloc->fix_oop_relocation(); |
|
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1080 } else if (iter.type() == relocInfo::metadata_type) { |
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1081 metadata_Relocation* reloc = iter.metadata_reloc(); |
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1082 reloc->fix_metadata_relocation(); |
|
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1083 } |
|
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1084 |
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1085 // There must not be any interfering patches or breakpoints. |
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1086 assert(!(iter.type() == relocInfo::breakpoint_type |
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1087 && iter.breakpoint_reloc()->active()), |
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1088 "no active breakpoint"); |
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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 |
| 1308 { | |
|
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1309 // invalidate osr nmethod before acquiring the patching lock since |
|
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1310 // they both acquire leaf locks and we don't want a deadlock. |
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1311 // This logic is equivalent to the logic below for patching the |
|
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1312 // verified entry point of regular methods. |
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1313 if (is_osr_method()) { |
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1314 // this effectively makes the osr nmethod not entrant |
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1315 invalidate_osr_method(); |
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1316 } |
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1317 |
| 0 | 1318 // Enter critical section. Does not block for safepoint. |
| 1319 MutexLockerEx pl(Patching_lock, Mutex::_no_safepoint_check_flag); | |
|
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1320 |
|
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1321 if (_state == state) { |
|
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1322 // another thread already performed this transition so nothing |
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1323 // to do, but return false to indicate this. |
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1324 return false; |
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1325 } |
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1326 |
| 0 | 1327 // The caller can be calling the method statically or through an inline |
| 1328 // cache call. | |
|
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1329 if (!is_osr_method() && !is_not_entrant()) { |
| 0 | 1330 NativeJump::patch_verified_entry(entry_point(), verified_entry_point(), |
| 1331 SharedRuntime::get_handle_wrong_method_stub()); | |
| 1332 } | |
| 1333 | |
|
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1334 if (is_in_use()) { |
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1335 // It's a true state change, so mark the method as decompiled. |
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1336 // Do it only for transition from alive. |
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1337 inc_decompile_count(); |
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1338 } |
|
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1339 |
| 0 | 1340 // Change state |
|
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1341 _state = state; |
|
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1342 |
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1343 // Log the transition once |
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1344 log_state_change(); |
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1345 |
|
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1346 // Remove nmethod from method. |
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1347 // We need to check if both the _code and _from_compiled_code_entry_point |
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1348 // refer to this nmethod because there is a race in setting these two fields |
|
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1349 // in Method* as seen in bugid 4947125. |
|
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1350 // If the vep() points to the zombie nmethod, the memory for the nmethod |
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1351 // could be flushed and the compiler and vtable stubs could still call |
|
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1352 // through it. |
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1353 if (method() != NULL && (method()->code() == this || |
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1354 method()->from_compiled_entry() == verified_entry_point())) { |
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1355 HandleMark hm; |
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1356 method()->clear_code(); |
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1357 } |
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1358 |
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1359 if (state == not_entrant) { |
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1360 mark_as_seen_on_stack(); |
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1361 } |
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1362 |
| 0 | 1363 } // leave critical region under Patching_lock |
| 1364 | |
|
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1365 // When the nmethod becomes zombie it is no longer alive so the |
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1366 // dependencies must be flushed. nmethods in the not_entrant |
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1367 // state will be flushed later when the transition to zombie |
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1368 // happens or they get unloaded. |
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1369 if (state == zombie) { |
| 1726 | 1370 { |
| 1371 // Flushing dependecies must be done before any possible | |
| 1372 // safepoint can sneak in, otherwise the oops used by the | |
| 1373 // dependency logic could have become stale. | |
| 1374 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
| 1375 flush_dependencies(NULL); | |
| 1376 } | |
|
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1377 |
|
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1378 // zombie only - if a JVMTI agent has enabled the CompiledMethodUnload |
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1379 // event and it hasn't already been reported for this nmethod then |
|
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1380 // report it now. The event may have been reported earilier if the GC |
|
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1381 // marked it for unloading). JvmtiDeferredEventQueue support means |
|
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1382 // we no longer go to a safepoint here. |
|
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1383 post_compiled_method_unload(); |
| 1726 | 1384 |
| 1385 #ifdef ASSERT | |
| 1386 // It's no longer safe to access the oops section since zombie | |
| 1387 // nmethods aren't scanned for GC. | |
| 1388 _oops_are_stale = true; | |
| 1389 #endif | |
|
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1390 } else { |
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1391 assert(state == not_entrant, "other cases may need to be handled differently"); |
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1392 } |
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1393 |
| 0 | 1394 if (TraceCreateZombies) { |
| 1395 tty->print_cr("nmethod <" INTPTR_FORMAT "> code made %s", this, (state == not_entrant) ? "not entrant" : "zombie"); | |
| 1396 } | |
| 1397 | |
| 1398 // Make sweeper aware that there is a zombie method that needs to be removed | |
| 1399 NMethodSweeper::notify(this); | |
| 1400 | |
|
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1401 return true; |
| 0 | 1402 } |
| 1403 | |
| 1404 void nmethod::flush() { | |
| 1405 // Note that there are no valid oops in the nmethod anymore. | |
| 1406 assert(is_zombie() || (is_osr_method() && is_unloaded()), "must be a zombie method"); | |
| 1407 assert(is_marked_for_reclamation() || (is_osr_method() && is_unloaded()), "must be marked for reclamation"); | |
| 1408 | |
| 1409 assert (!is_locked_by_vm(), "locked methods shouldn't be flushed"); | |
|
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1410 assert_locked_or_safepoint(CodeCache_lock); |
| 0 | 1411 |
| 1412 // completely deallocate this method | |
|
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1413 Events::log(JavaThread::current(), "flushing nmethod " INTPTR_FORMAT, this); |
| 0 | 1414 if (PrintMethodFlushing) { |
| 1202 | 1415 tty->print_cr("*flushing nmethod %3d/" INTPTR_FORMAT ". Live blobs:" UINT32_FORMAT "/Free CodeCache:" SIZE_FORMAT "Kb", |
| 1416 _compile_id, this, CodeCache::nof_blobs(), CodeCache::unallocated_capacity()/1024); | |
| 0 | 1417 } |
| 1418 | |
| 1419 // We need to deallocate any ExceptionCache data. | |
| 1420 // Note that we do not need to grab the nmethod lock for this, it | |
| 1421 // better be thread safe if we're disposing of it! | |
| 1422 ExceptionCache* ec = exception_cache(); | |
| 1423 set_exception_cache(NULL); | |
| 1424 while(ec != NULL) { | |
| 1425 ExceptionCache* next = ec->next(); | |
| 1426 delete ec; | |
| 1427 ec = next; | |
| 1428 } | |
| 1429 | |
|
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1430 if (on_scavenge_root_list()) { |
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1431 CodeCache::drop_scavenge_root_nmethod(this); |
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1432 } |
|
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1433 |
| 1202 | 1434 if (is_speculatively_disconnected()) { |
| 1435 CodeCache::remove_saved_code(this); | |
| 1436 } | |
| 1437 | |
| 1692 | 1438 #ifdef SHARK |
|
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1439 ((SharkCompiler *) compiler())->free_compiled_method(insts_begin()); |
| 1692 | 1440 #endif // SHARK |
| 1441 | |
| 0 | 1442 ((CodeBlob*)(this))->flush(); |
| 1443 | |
| 1444 CodeCache::free(this); | |
| 1445 } | |
| 1446 | |
| 1447 | |
| 1448 // | |
| 1449 // Notify all classes this nmethod is dependent on that it is no | |
| 1450 // longer dependent. This should only be called in two situations. | |
| 1451 // First, when a nmethod transitions to a zombie all dependents need | |
| 1452 // to be clear. Since zombification happens at a safepoint there's no | |
| 1453 // synchronization issues. The second place is a little more tricky. | |
| 1454 // During phase 1 of mark sweep class unloading may happen and as a | |
| 1455 // result some nmethods may get unloaded. In this case the flushing | |
| 1456 // of dependencies must happen during phase 1 since after GC any | |
| 1457 // dependencies in the unloaded nmethod won't be updated, so | |
| 1458 // traversing the dependency information in unsafe. In that case this | |
| 1459 // function is called with a non-NULL argument and this function only | |
| 1460 // notifies instanceKlasses that are reachable | |
| 1461 | |
| 1462 void nmethod::flush_dependencies(BoolObjectClosure* is_alive) { | |
|
1538
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|
1463 assert_locked_or_safepoint(CodeCache_lock); |
| 0 | 1464 assert(Universe::heap()->is_gc_active() == (is_alive != NULL), |
| 1465 "is_alive is non-NULL if and only if we are called during GC"); | |
| 1466 if (!has_flushed_dependencies()) { | |
| 1467 set_has_flushed_dependencies(); | |
| 1468 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
|
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1469 Klass* klass = deps.context_type(); |
| 0 | 1470 if (klass == NULL) continue; // ignore things like evol_method |
| 1471 | |
| 1472 // During GC the is_alive closure is non-NULL, and is used to | |
| 1473 // determine liveness of dependees that need to be updated. | |
|
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1474 if (is_alive == NULL || klass->is_loader_alive(is_alive)) { |
|
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1475 InstanceKlass::cast(klass)->remove_dependent_nmethod(this); |
| 0 | 1476 } |
| 1477 } | |
| 1478 } | |
| 1479 } | |
| 1480 | |
| 1481 | |
| 1482 // If this oop is not live, the nmethod can be unloaded. | |
|
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|
1483 bool nmethod::can_unload(BoolObjectClosure* is_alive, oop* root, bool unloading_occurred) { |
| 0 | 1484 assert(root != NULL, "just checking"); |
| 1485 oop obj = *root; | |
| 1486 if (obj == NULL || is_alive->do_object_b(obj)) { | |
| 1487 return false; | |
| 1488 } | |
|
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1489 |
|
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|
1490 // If ScavengeRootsInCode is true, an nmethod might be unloaded |
|
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|
1491 // simply because one of its constant oops has gone dead. |
|
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|
1492 // No actual classes need to be unloaded in order for this to occur. |
|
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|
1493 assert(unloading_occurred || ScavengeRootsInCode, "Inconsistency in unloading"); |
| 0 | 1494 make_unloaded(is_alive, obj); |
| 1495 return true; | |
| 1496 } | |
| 1497 | |
| 1498 // ------------------------------------------------------------------ | |
| 1499 // post_compiled_method_load_event | |
| 1500 // new method for install_code() path | |
| 1501 // Transfer information from compilation to jvmti | |
| 1502 void nmethod::post_compiled_method_load_event() { | |
| 1503 | |
|
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1504 Method* moop = method(); |
| 4006 | 1505 #ifndef USDT2 |
| 0 | 1506 HS_DTRACE_PROBE8(hotspot, compiled__method__load, |
| 1507 moop->klass_name()->bytes(), | |
| 1508 moop->klass_name()->utf8_length(), | |
| 1509 moop->name()->bytes(), | |
| 1510 moop->name()->utf8_length(), | |
| 1511 moop->signature()->bytes(), | |
| 1512 moop->signature()->utf8_length(), | |
| 1748 | 1513 insts_begin(), insts_size()); |
| 4006 | 1514 #else /* USDT2 */ |
| 1515 HOTSPOT_COMPILED_METHOD_LOAD( | |
| 1516 (char *) moop->klass_name()->bytes(), | |
| 1517 moop->klass_name()->utf8_length(), | |
| 1518 (char *) moop->name()->bytes(), | |
| 1519 moop->name()->utf8_length(), | |
| 1520 (char *) moop->signature()->bytes(), | |
| 1521 moop->signature()->utf8_length(), | |
| 1522 insts_begin(), insts_size()); | |
| 1523 #endif /* USDT2 */ | |
| 0 | 1524 |
|
1616
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1525 if (JvmtiExport::should_post_compiled_method_load() || |
|
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|
1526 JvmtiExport::should_post_compiled_method_unload()) { |
|
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|
1527 get_and_cache_jmethod_id(); |
|
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|
1528 } |
|
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1529 |
| 0 | 1530 if (JvmtiExport::should_post_compiled_method_load()) { |
|
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1531 // Let the Service thread (which is a real Java thread) post the event |
|
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1532 MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag); |
|
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1533 JvmtiDeferredEventQueue::enqueue( |
|
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1534 JvmtiDeferredEvent::compiled_method_load_event(this)); |
| 0 | 1535 } |
| 1536 } | |
| 1537 | |
|
1616
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|
1538 jmethodID nmethod::get_and_cache_jmethod_id() { |
|
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|
1539 if (_jmethod_id == NULL) { |
|
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|
1540 // Cache the jmethod_id since it can no longer be looked up once the |
|
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1541 // method itself has been marked for unloading. |
|
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|
1542 _jmethod_id = method()->jmethod_id(); |
|
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|
1543 } |
|
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|
1544 return _jmethod_id; |
|
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|
1545 } |
|
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|
1546 |
| 0 | 1547 void nmethod::post_compiled_method_unload() { |
|
1577
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|
1548 if (unload_reported()) { |
|
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|
1549 // During unloading we transition to unloaded and then to zombie |
|
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|
1550 // and the unloading is reported during the first transition. |
|
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|
1551 return; |
|
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|
1552 } |
|
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diff
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|
1553 |
| 0 | 1554 assert(_method != NULL && !is_unloaded(), "just checking"); |
| 1555 DTRACE_METHOD_UNLOAD_PROBE(method()); | |
| 1556 | |
| 1557 // If a JVMTI agent has enabled the CompiledMethodUnload event then | |
|
1616
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|
1558 // post the event. Sometime later this nmethod will be made a zombie |
|
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1559 // by the sweeper but the Method* will not be valid at that point. |
|
1616
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|
1560 // If the _jmethod_id is null then no load event was ever requested |
|
38e8278318ca
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|
1561 // so don't bother posting the unload. The main reason for this is |
|
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1562 // that the jmethodID is a weak reference to the Method* so if |
|
1616
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|
1563 // it's being unloaded there's no way to look it up since the weak |
|
38e8278318ca
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|
1564 // ref will have been cleared. |
|
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|
1565 if (_jmethod_id != NULL && JvmtiExport::should_post_compiled_method_unload()) { |
| 0 | 1566 assert(!unload_reported(), "already unloaded"); |
|
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|
1567 JvmtiDeferredEvent event = |
|
2342
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
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2321
diff
changeset
|
1568 JvmtiDeferredEvent::compiled_method_unload_event(this, |
|
2195
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|
1569 _jmethod_id, insts_begin()); |
|
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|
1570 if (SafepointSynchronize::is_at_safepoint()) { |
|
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|
1571 // Don't want to take the queueing lock. Add it as pending and |
|
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|
1572 // it will get enqueued later. |
|
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|
1573 JvmtiDeferredEventQueue::add_pending_event(event); |
|
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|
1574 } else { |
|
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|
1575 MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag); |
|
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|
1576 JvmtiDeferredEventQueue::enqueue(event); |
|
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|
1577 } |
| 0 | 1578 } |
| 1579 | |
| 1580 // The JVMTI CompiledMethodUnload event can be enabled or disabled at | |
| 1581 // any time. As the nmethod is being unloaded now we mark it has | |
| 1582 // having the unload event reported - this will ensure that we don't | |
| 1583 // attempt to report the event in the unlikely scenario where the | |
| 1584 // event is enabled at the time the nmethod is made a zombie. | |
| 1585 set_unload_reported(); | |
| 1586 } | |
| 1587 | |
| 1588 // This is called at the end of the strong tracing/marking phase of a | |
| 1589 // GC to unload an nmethod if it contains otherwise unreachable | |
| 1590 // oops. | |
| 1591 | |
|
6787
8966c2d65d96
7200470: KeepAliveClosure not needed in CodeCache::do_unloading
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6725
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|
1592 void nmethod::do_unloading(BoolObjectClosure* is_alive, bool unloading_occurred) { |
| 0 | 1593 // Make sure the oop's ready to receive visitors |
| 1594 assert(!is_zombie() && !is_unloaded(), | |
| 1595 "should not call follow on zombie or unloaded nmethod"); | |
| 1596 | |
| 1597 // If the method is not entrant then a JMP is plastered over the | |
| 1598 // first few bytes. If an oop in the old code was there, that oop | |
| 1599 // should not get GC'd. Skip the first few bytes of oops on | |
| 1600 // not-entrant methods. | |
| 1601 address low_boundary = verified_entry_point(); | |
| 1602 if (is_not_entrant()) { | |
| 1603 low_boundary += NativeJump::instruction_size; | |
| 1604 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
| 1605 // (See comment above.) | |
| 1606 } | |
| 1607 | |
| 1608 // The RedefineClasses() API can cause the class unloading invariant | |
| 1609 // to no longer be true. See jvmtiExport.hpp for details. | |
| 1610 // Also, leave a debugging breadcrumb in local flag. | |
| 1611 bool a_class_was_redefined = JvmtiExport::has_redefined_a_class(); | |
| 1612 if (a_class_was_redefined) { | |
| 1613 // This set of the unloading_occurred flag is done before the | |
| 1614 // call to post_compiled_method_unload() so that the unloading | |
| 1615 // of this nmethod is reported. | |
| 1616 unloading_occurred = true; | |
| 1617 } | |
| 1618 | |
| 1619 // Exception cache | |
| 1620 ExceptionCache* ec = exception_cache(); | |
| 1621 while (ec != NULL) { | |
|
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|
1622 Klass* ex_klass = ec->exception_type(); |
| 0 | 1623 ExceptionCache* next_ec = ec->next(); |
|
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1624 if (ex_klass != NULL && !ex_klass->is_loader_alive(is_alive)) { |
| 0 | 1625 remove_from_exception_cache(ec); |
| 1626 } | |
| 1627 ec = next_ec; | |
| 1628 } | |
| 1629 | |
| 1630 // If class unloading occurred we first iterate over all inline caches and | |
| 1631 // clear ICs where the cached oop is referring to an unloaded klass or method. | |
| 1632 // The remaining live cached oops will be traversed in the relocInfo::oop_type | |
| 1633 // iteration below. | |
| 1634 if (unloading_occurred) { | |
| 1635 RelocIterator iter(this, low_boundary); | |
| 1636 while(iter.next()) { | |
| 1637 if (iter.type() == relocInfo::virtual_call_type) { | |
| 1638 CompiledIC *ic = CompiledIC_at(iter.reloc()); | |
|
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|
1639 if (ic->is_icholder_call()) { |
| 0 | 1640 // The only exception is compiledICHolder oops which may |
| 1641 // yet be marked below. (We check this further below). | |
|
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|
1642 CompiledICHolder* cichk_oop = ic->cached_icholder(); |
|
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1643 if (cichk_oop->holder_method()->method_holder()->is_loader_alive(is_alive) && |
|
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|
1644 cichk_oop->holder_klass()->is_loader_alive(is_alive)) { |
| 0 | 1645 continue; |
| 1646 } | |
|
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|
1647 } else { |
|
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|
1648 Metadata* ic_oop = ic->cached_metadata(); |
|
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1649 if (ic_oop != NULL) { |
|
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|
1650 if (ic_oop->is_klass()) { |
|
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|
1651 if (((Klass*)ic_oop)->is_loader_alive(is_alive)) { |
|
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|
1652 continue; |
|
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|
1653 } |
|
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|
1654 } else if (ic_oop->is_method()) { |
|
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|
1655 if (((Method*)ic_oop)->method_holder()->is_loader_alive(is_alive)) { |
|
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|
1656 continue; |
|
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|
1657 } |
|
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|
1658 } else { |
|
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|
1659 ShouldNotReachHere(); |
|
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|
1660 } |
|
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|
1661 } |
| 0 | 1662 } |
| 1663 ic->set_to_clean(); | |
| 1664 } | |
| 1665 } | |
| 1666 } | |
| 1667 | |
| 1668 // Compiled code | |
|
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1669 { |
| 0 | 1670 RelocIterator iter(this, low_boundary); |
| 1671 while (iter.next()) { | |
| 1672 if (iter.type() == relocInfo::oop_type) { | |
| 1673 oop_Relocation* r = iter.oop_reloc(); | |
| 1674 // In this loop, we must only traverse those oops directly embedded in | |
| 1675 // the code. Other oops (oop_index>0) are seen as part of scopes_oops. | |
| 1676 assert(1 == (r->oop_is_immediate()) + | |
| 1677 (r->oop_addr() >= oops_begin() && r->oop_addr() < oops_end()), | |
| 1678 "oop must be found in exactly one place"); | |
| 1679 if (r->oop_is_immediate() && r->oop_value() != NULL) { | |
|
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1680 if (can_unload(is_alive, r->oop_addr(), unloading_occurred)) { |
| 0 | 1681 return; |
| 1682 } | |
| 1683 } | |
| 1684 } | |
| 1685 } | |
|
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1686 } |
| 0 | 1687 |
| 1688 | |
| 1689 // Scopes | |
| 1690 for (oop* p = oops_begin(); p < oops_end(); p++) { | |
| 1691 if (*p == Universe::non_oop_word()) continue; // skip non-oops | |
|
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1692 if (can_unload(is_alive, p, unloading_occurred)) { |
| 0 | 1693 return; |
| 1694 } | |
| 1695 } | |
| 1696 | |
|
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1697 // Ensure that all metadata is still alive |
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1698 verify_metadata_loaders(low_boundary, is_alive); |
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1699 } |
|
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1700 |
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1701 #ifdef ASSERT |
|
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1702 |
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1703 class CheckClass : AllStatic { |
|
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1704 static BoolObjectClosure* _is_alive; |
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1705 |
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1706 // Check class_loader is alive for this bit of metadata. |
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1707 static void check_class(Metadata* md) { |
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1708 Klass* klass = NULL; |
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1709 if (md->is_klass()) { |
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1710 klass = ((Klass*)md); |
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1711 } else if (md->is_method()) { |
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1712 klass = ((Method*)md)->method_holder(); |
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1713 } else if (md->is_methodData()) { |
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1714 klass = ((MethodData*)md)->method()->method_holder(); |
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1715 } else { |
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1716 md->print(); |
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1717 ShouldNotReachHere(); |
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1718 } |
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1719 assert(klass->is_loader_alive(_is_alive), "must be alive"); |
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1720 } |
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1721 public: |
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1722 static void do_check_class(BoolObjectClosure* is_alive, nmethod* nm) { |
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1723 assert(SafepointSynchronize::is_at_safepoint(), "this is only ok at safepoint"); |
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1724 _is_alive = is_alive; |
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1725 nm->metadata_do(check_class); |
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1726 } |
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1727 }; |
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1728 |
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1729 // This is called during a safepoint so can use static data |
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1730 BoolObjectClosure* CheckClass::_is_alive = NULL; |
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1731 #endif // ASSERT |
|
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1732 |
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1733 |
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1734 // Processing of oop references should have been sufficient to keep |
|
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1735 // all strong references alive. Any weak references should have been |
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1736 // cleared as well. Visit all the metadata and ensure that it's |
|
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1737 // really alive. |
|
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1738 void nmethod::verify_metadata_loaders(address low_boundary, BoolObjectClosure* is_alive) { |
|
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1739 #ifdef ASSERT |
| 0 | 1740 RelocIterator iter(this, low_boundary); |
| 1741 while (iter.next()) { | |
|
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1742 // static_stub_Relocations may have dangling references to |
|
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1743 // Method*s so trim them out here. Otherwise it looks like |
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1744 // compiled code is maintaining a link to dead metadata. |
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1745 address static_call_addr = NULL; |
|
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1746 if (iter.type() == relocInfo::opt_virtual_call_type) { |
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1747 CompiledIC* cic = CompiledIC_at(iter.reloc()); |
|
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1748 if (!cic->is_call_to_interpreted()) { |
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1749 static_call_addr = iter.addr(); |
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1750 } |
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1751 } else if (iter.type() == relocInfo::static_call_type) { |
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1752 CompiledStaticCall* csc = compiledStaticCall_at(iter.reloc()); |
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1753 if (!csc->is_call_to_interpreted()) { |
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1754 static_call_addr = iter.addr(); |
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1755 } |
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1756 } |
|
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1757 if (static_call_addr != NULL) { |
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1758 RelocIterator sciter(this, low_boundary); |
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1759 while (sciter.next()) { |
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1760 if (sciter.type() == relocInfo::static_stub_type && |
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1761 sciter.static_stub_reloc()->static_call() == static_call_addr) { |
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1762 sciter.static_stub_reloc()->clear_inline_cache(); |
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1763 } |
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1764 } |
| 0 | 1765 } |
| 1766 } | |
|
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1767 // Check that the metadata embedded in the nmethod is alive |
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1768 CheckClass::do_check_class(is_alive, this); |
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1769 #endif |
| 0 | 1770 } |
| 1771 | |
|
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1772 |
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1773 // Iterate over metadata calling this function. Used by RedefineClasses |
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1774 void nmethod::metadata_do(void f(Metadata*)) { |
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1775 address low_boundary = verified_entry_point(); |
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1776 if (is_not_entrant()) { |
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1777 low_boundary += NativeJump::instruction_size; |
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1778 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. |
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1779 // (See comment above.) |
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1780 } |
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1781 { |
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1782 // Visit all immediate references that are embedded in the instruction stream. |
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1783 RelocIterator iter(this, low_boundary); |
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1784 while (iter.next()) { |
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1785 if (iter.type() == relocInfo::metadata_type ) { |
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1786 metadata_Relocation* r = iter.metadata_reloc(); |
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1787 // In this lmetadata, we must only follow those metadatas directly embedded in |
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1788 // the code. Other metadatas (oop_index>0) are seen as part of |
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1789 // the metadata section below. |
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1790 assert(1 == (r->metadata_is_immediate()) + |
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1791 (r->metadata_addr() >= metadata_begin() && r->metadata_addr() < metadata_end()), |
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1792 "metadata must be found in exactly one place"); |
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1793 if (r->metadata_is_immediate() && r->metadata_value() != NULL) { |
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1794 Metadata* md = r->metadata_value(); |
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1795 f(md); |
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1796 } |
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1797 } |
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1798 } |
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1799 } |
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1800 |
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1801 // Visit the metadata section |
|
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1802 for (Metadata** p = metadata_begin(); p < metadata_end(); p++) { |
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1803 if (*p == Universe::non_oop_word() || *p == NULL) continue; // skip non-oops |
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1804 Metadata* md = *p; |
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1805 f(md); |
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1806 } |
|
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1807 // Call function Method*, not embedded in these other places. |
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1808 if (_method != NULL) f(_method); |
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1809 } |
|
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1810 |
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1811 |
| 941 | 1812 // This method is called twice during GC -- once while |
| 1813 // tracing the "active" nmethods on thread stacks during | |
| 1814 // the (strong) marking phase, and then again when walking | |
| 1815 // the code cache contents during the weak roots processing | |
| 1816 // phase. The two uses are distinguished by means of the | |
|
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1817 // 'do_strong_roots_only' flag, which is true in the first |
| 941 | 1818 // case. We want to walk the weak roots in the nmethod |
| 1819 // only in the second case. The weak roots in the nmethod | |
| 1820 // are the oops in the ExceptionCache and the InlineCache | |
| 1821 // oops. | |
|
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1822 void nmethod::oops_do(OopClosure* f, bool do_strong_roots_only) { |
| 0 | 1823 // make sure the oops ready to receive visitors |
| 1824 assert(!is_zombie() && !is_unloaded(), | |
| 1825 "should not call follow on zombie or unloaded nmethod"); | |
| 1826 | |
| 1827 // If the method is not entrant or zombie then a JMP is plastered over the | |
| 1828 // first few bytes. If an oop in the old code was there, that oop | |
| 1829 // should not get GC'd. Skip the first few bytes of oops on | |
| 1830 // not-entrant methods. | |
| 1831 address low_boundary = verified_entry_point(); | |
| 1832 if (is_not_entrant()) { | |
| 1833 low_boundary += NativeJump::instruction_size; | |
| 1834 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
| 1835 // (See comment above.) | |
| 1836 } | |
| 1837 | |
| 1838 RelocIterator iter(this, low_boundary); | |
| 941 | 1839 |
| 0 | 1840 while (iter.next()) { |
| 1841 if (iter.type() == relocInfo::oop_type ) { | |
| 1842 oop_Relocation* r = iter.oop_reloc(); | |
| 1843 // In this loop, we must only follow those oops directly embedded in | |
| 1844 // the code. Other oops (oop_index>0) are seen as part of scopes_oops. | |
| 941 | 1845 assert(1 == (r->oop_is_immediate()) + |
| 1846 (r->oop_addr() >= oops_begin() && r->oop_addr() < oops_end()), | |
| 1847 "oop must be found in exactly one place"); | |
| 0 | 1848 if (r->oop_is_immediate() && r->oop_value() != NULL) { |
| 1849 f->do_oop(r->oop_addr()); | |
| 1850 } | |
| 1851 } | |
| 1852 } | |
| 1853 | |
| 1854 // Scopes | |
|
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1855 // This includes oop constants not inlined in the code stream. |
| 0 | 1856 for (oop* p = oops_begin(); p < oops_end(); p++) { |
| 1857 if (*p == Universe::non_oop_word()) continue; // skip non-oops | |
| 1858 f->do_oop(p); | |
| 1859 } | |
| 1860 } | |
| 1861 | |
|
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1862 #define NMETHOD_SENTINEL ((nmethod*)badAddress) |
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1863 |
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1864 nmethod* volatile nmethod::_oops_do_mark_nmethods; |
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1865 |
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1866 // An nmethod is "marked" if its _mark_link is set non-null. |
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1867 // Even if it is the end of the linked list, it will have a non-null link value, |
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1868 // as long as it is on the list. |
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1869 // This code must be MP safe, because it is used from parallel GC passes. |
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1870 bool nmethod::test_set_oops_do_mark() { |
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1871 assert(nmethod::oops_do_marking_is_active(), "oops_do_marking_prologue must be called"); |
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1872 nmethod* observed_mark_link = _oops_do_mark_link; |
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1873 if (observed_mark_link == NULL) { |
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1874 // Claim this nmethod for this thread to mark. |
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1875 observed_mark_link = (nmethod*) |
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1876 Atomic::cmpxchg_ptr(NMETHOD_SENTINEL, &_oops_do_mark_link, NULL); |
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1877 if (observed_mark_link == NULL) { |
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1878 |
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1879 // Atomically append this nmethod (now claimed) to the head of the list: |
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1880 nmethod* observed_mark_nmethods = _oops_do_mark_nmethods; |
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1881 for (;;) { |
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1882 nmethod* required_mark_nmethods = observed_mark_nmethods; |
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1883 _oops_do_mark_link = required_mark_nmethods; |
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1884 observed_mark_nmethods = (nmethod*) |
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1885 Atomic::cmpxchg_ptr(this, &_oops_do_mark_nmethods, required_mark_nmethods); |
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1886 if (observed_mark_nmethods == required_mark_nmethods) |
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1887 break; |
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1888 } |
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1889 // Mark was clear when we first saw this guy. |
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1890 NOT_PRODUCT(if (TraceScavenge) print_on(tty, "oops_do, mark")); |
|
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1891 return false; |
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1892 } |
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1893 } |
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1894 // On fall through, another racing thread marked this nmethod before we did. |
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1895 return true; |
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1896 } |
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1897 |
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1898 void nmethod::oops_do_marking_prologue() { |
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1899 NOT_PRODUCT(if (TraceScavenge) tty->print_cr("[oops_do_marking_prologue")); |
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1900 assert(_oops_do_mark_nmethods == NULL, "must not call oops_do_marking_prologue twice in a row"); |
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1901 // We use cmpxchg_ptr instead of regular assignment here because the user |
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1902 // may fork a bunch of threads, and we need them all to see the same state. |
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1903 void* observed = Atomic::cmpxchg_ptr(NMETHOD_SENTINEL, &_oops_do_mark_nmethods, NULL); |
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1904 guarantee(observed == NULL, "no races in this sequential code"); |
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1905 } |
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1906 |
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1907 void nmethod::oops_do_marking_epilogue() { |
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1908 assert(_oops_do_mark_nmethods != NULL, "must not call oops_do_marking_epilogue twice in a row"); |
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1909 nmethod* cur = _oops_do_mark_nmethods; |
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1910 while (cur != NMETHOD_SENTINEL) { |
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1911 assert(cur != NULL, "not NULL-terminated"); |
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1912 nmethod* next = cur->_oops_do_mark_link; |
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1913 cur->_oops_do_mark_link = NULL; |
|
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1914 cur->fix_oop_relocations(); |
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1915 NOT_PRODUCT(if (TraceScavenge) cur->print_on(tty, "oops_do, unmark")); |
|
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1916 cur = next; |
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1917 } |
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1918 void* required = _oops_do_mark_nmethods; |
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1919 void* observed = Atomic::cmpxchg_ptr(NULL, &_oops_do_mark_nmethods, required); |
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1920 guarantee(observed == required, "no races in this sequential code"); |
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1921 NOT_PRODUCT(if (TraceScavenge) tty->print_cr("oops_do_marking_epilogue]")); |
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1922 } |
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1923 |
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1924 class DetectScavengeRoot: public OopClosure { |
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1925 bool _detected_scavenge_root; |
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1926 public: |
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1927 DetectScavengeRoot() : _detected_scavenge_root(false) |
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1928 { NOT_PRODUCT(_print_nm = NULL); } |
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1929 bool detected_scavenge_root() { return _detected_scavenge_root; } |
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1930 virtual void do_oop(oop* p) { |
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1931 if ((*p) != NULL && (*p)->is_scavengable()) { |
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1932 NOT_PRODUCT(maybe_print(p)); |
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1933 _detected_scavenge_root = true; |
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1934 } |
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1935 } |
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1936 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
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1937 |
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1938 #ifndef PRODUCT |
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1939 nmethod* _print_nm; |
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1940 void maybe_print(oop* p) { |
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1941 if (_print_nm == NULL) return; |
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1942 if (!_detected_scavenge_root) _print_nm->print_on(tty, "new scavenge root"); |
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1943 tty->print_cr(""PTR_FORMAT"[offset=%d] detected scavengable oop "PTR_FORMAT" (found at "PTR_FORMAT")", |
|
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1944 _print_nm, (int)((intptr_t)p - (intptr_t)_print_nm), |
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1945 (intptr_t)(*p), (intptr_t)p); |
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1946 (*p)->print(); |
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1947 } |
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1948 #endif //PRODUCT |
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1949 }; |
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1950 |
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1951 bool nmethod::detect_scavenge_root_oops() { |
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1952 DetectScavengeRoot detect_scavenge_root; |
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1953 NOT_PRODUCT(if (TraceScavenge) detect_scavenge_root._print_nm = this); |
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1954 oops_do(&detect_scavenge_root); |
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1955 return detect_scavenge_root.detected_scavenge_root(); |
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1956 } |
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1957 |
| 0 | 1958 // Method that knows how to preserve outgoing arguments at call. This method must be |
| 1959 // called with a frame corresponding to a Java invoke | |
| 1960 void nmethod::preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { | |
| 1692 | 1961 #ifndef SHARK |
| 0 | 1962 if (!method()->is_native()) { |
| 1963 SimpleScopeDesc ssd(this, fr.pc()); | |
| 2142 | 1964 Bytecode_invoke call(ssd.method(), ssd.bci()); |
|
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1965 // compiled invokedynamic call sites have an implicit receiver at |
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1966 // resolution time, so make sure it gets GC'ed. |
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1967 bool has_receiver = !call.is_invokestatic(); |
|
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1968 Symbol* signature = call.signature(); |
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1969 fr.oops_compiled_arguments_do(signature, has_receiver, reg_map, f); |
| 0 | 1970 } |
| 1692 | 1971 #endif // !SHARK |
| 0 | 1972 } |
| 1973 | |
| 1974 | |
| 1975 oop nmethod::embeddedOop_at(u_char* p) { | |
|
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1976 RelocIterator iter(this, p, p + 1); |
| 0 | 1977 while (iter.next()) |
| 1978 if (iter.type() == relocInfo::oop_type) { | |
| 1979 return iter.oop_reloc()->oop_value(); | |
| 1980 } | |
| 1981 return NULL; | |
| 1982 } | |
| 1983 | |
| 1984 | |
| 1985 inline bool includes(void* p, void* from, void* to) { | |
| 1986 return from <= p && p < to; | |
| 1987 } | |
| 1988 | |
| 1989 | |
| 1990 void nmethod::copy_scopes_pcs(PcDesc* pcs, int count) { | |
| 1991 assert(count >= 2, "must be sentinel values, at least"); | |
| 1992 | |
| 1993 #ifdef ASSERT | |
| 1994 // must be sorted and unique; we do a binary search in find_pc_desc() | |
| 1995 int prev_offset = pcs[0].pc_offset(); | |
| 1996 assert(prev_offset == PcDesc::lower_offset_limit, | |
| 1997 "must start with a sentinel"); | |
| 1998 for (int i = 1; i < count; i++) { | |
| 1999 int this_offset = pcs[i].pc_offset(); | |
| 2000 assert(this_offset > prev_offset, "offsets must be sorted"); | |
| 2001 prev_offset = this_offset; | |
| 2002 } | |
| 2003 assert(prev_offset == PcDesc::upper_offset_limit, | |
| 2004 "must end with a sentinel"); | |
| 2005 #endif //ASSERT | |
| 2006 | |
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2007 // Search for MethodHandle invokes and tag the nmethod. |
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2008 for (int i = 0; i < count; i++) { |
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2009 if (pcs[i].is_method_handle_invoke()) { |
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2010 set_has_method_handle_invokes(true); |
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2011 break; |
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2012 } |
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2013 } |
|
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2014 assert(has_method_handle_invokes() == (_deoptimize_mh_offset != -1), "must have deopt mh handler"); |
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2015 |
| 0 | 2016 int size = count * sizeof(PcDesc); |
| 2017 assert(scopes_pcs_size() >= size, "oob"); | |
| 2018 memcpy(scopes_pcs_begin(), pcs, size); | |
| 2019 | |
| 2020 // Adjust the final sentinel downward. | |
| 2021 PcDesc* last_pc = &scopes_pcs_begin()[count-1]; | |
| 2022 assert(last_pc->pc_offset() == PcDesc::upper_offset_limit, "sanity"); | |
| 1748 | 2023 last_pc->set_pc_offset(content_size() + 1); |
| 0 | 2024 for (; last_pc + 1 < scopes_pcs_end(); last_pc += 1) { |
| 2025 // Fill any rounding gaps with copies of the last record. | |
| 2026 last_pc[1] = last_pc[0]; | |
| 2027 } | |
| 2028 // The following assert could fail if sizeof(PcDesc) is not | |
| 2029 // an integral multiple of oopSize (the rounding term). | |
| 2030 // If it fails, change the logic to always allocate a multiple | |
| 2031 // of sizeof(PcDesc), and fill unused words with copies of *last_pc. | |
| 2032 assert(last_pc + 1 == scopes_pcs_end(), "must match exactly"); | |
| 2033 } | |
| 2034 | |
| 2035 void nmethod::copy_scopes_data(u_char* buffer, int size) { | |
| 2036 assert(scopes_data_size() >= size, "oob"); | |
| 2037 memcpy(scopes_data_begin(), buffer, size); | |
| 2038 } | |
| 2039 | |
| 2040 | |
| 2041 #ifdef ASSERT | |
| 2042 static PcDesc* linear_search(nmethod* nm, int pc_offset, bool approximate) { | |
| 2043 PcDesc* lower = nm->scopes_pcs_begin(); | |
| 2044 PcDesc* upper = nm->scopes_pcs_end(); | |
| 2045 lower += 1; // exclude initial sentinel | |
| 2046 PcDesc* res = NULL; | |
| 2047 for (PcDesc* p = lower; p < upper; p++) { | |
| 2048 NOT_PRODUCT(--nmethod_stats.pc_desc_tests); // don't count this call to match_desc | |
| 2049 if (match_desc(p, pc_offset, approximate)) { | |
| 2050 if (res == NULL) | |
| 2051 res = p; | |
| 2052 else | |
| 2053 res = (PcDesc*) badAddress; | |
| 2054 } | |
| 2055 } | |
| 2056 return res; | |
| 2057 } | |
| 2058 #endif | |
| 2059 | |
| 2060 | |
| 2061 // Finds a PcDesc with real-pc equal to "pc" | |
| 2062 PcDesc* nmethod::find_pc_desc_internal(address pc, bool approximate) { | |
| 1748 | 2063 address base_address = code_begin(); |
| 0 | 2064 if ((pc < base_address) || |
| 2065 (pc - base_address) >= (ptrdiff_t) PcDesc::upper_offset_limit) { | |
| 2066 return NULL; // PC is wildly out of range | |
| 2067 } | |
| 2068 int pc_offset = (int) (pc - base_address); | |
| 2069 | |
| 2070 // Check the PcDesc cache if it contains the desired PcDesc | |
| 2071 // (This as an almost 100% hit rate.) | |
| 2072 PcDesc* res = _pc_desc_cache.find_pc_desc(pc_offset, approximate); | |
| 2073 if (res != NULL) { | |
| 2074 assert(res == linear_search(this, pc_offset, approximate), "cache ok"); | |
| 2075 return res; | |
| 2076 } | |
| 2077 | |
| 2078 // Fallback algorithm: quasi-linear search for the PcDesc | |
| 2079 // Find the last pc_offset less than the given offset. | |
| 2080 // The successor must be the required match, if there is a match at all. | |
| 2081 // (Use a fixed radix to avoid expensive affine pointer arithmetic.) | |
| 2082 PcDesc* lower = scopes_pcs_begin(); | |
| 2083 PcDesc* upper = scopes_pcs_end(); | |
| 2084 upper -= 1; // exclude final sentinel | |
| 2085 if (lower >= upper) return NULL; // native method; no PcDescs at all | |
| 2086 | |
| 2087 #define assert_LU_OK \ | |
| 2088 /* invariant on lower..upper during the following search: */ \ | |
| 2089 assert(lower->pc_offset() < pc_offset, "sanity"); \ | |
| 2090 assert(upper->pc_offset() >= pc_offset, "sanity") | |
| 2091 assert_LU_OK; | |
| 2092 | |
| 2093 // Use the last successful return as a split point. | |
| 2094 PcDesc* mid = _pc_desc_cache.last_pc_desc(); | |
| 2095 NOT_PRODUCT(++nmethod_stats.pc_desc_searches); | |
| 2096 if (mid->pc_offset() < pc_offset) { | |
| 2097 lower = mid; | |
| 2098 } else { | |
| 2099 upper = mid; | |
| 2100 } | |
| 2101 | |
| 2102 // Take giant steps at first (4096, then 256, then 16, then 1) | |
| 2103 const int LOG2_RADIX = 4 /*smaller steps in debug mode:*/ debug_only(-1); | |
| 2104 const int RADIX = (1 << LOG2_RADIX); | |
| 2105 for (int step = (1 << (LOG2_RADIX*3)); step > 1; step >>= LOG2_RADIX) { | |
| 2106 while ((mid = lower + step) < upper) { | |
| 2107 assert_LU_OK; | |
| 2108 NOT_PRODUCT(++nmethod_stats.pc_desc_searches); | |
| 2109 if (mid->pc_offset() < pc_offset) { | |
| 2110 lower = mid; | |
| 2111 } else { | |
| 2112 upper = mid; | |
| 2113 break; | |
| 2114 } | |
| 2115 } | |
| 2116 assert_LU_OK; | |
| 2117 } | |
| 2118 | |
| 2119 // Sneak up on the value with a linear search of length ~16. | |
| 2120 while (true) { | |
| 2121 assert_LU_OK; | |
| 2122 mid = lower + 1; | |
| 2123 NOT_PRODUCT(++nmethod_stats.pc_desc_searches); | |
| 2124 if (mid->pc_offset() < pc_offset) { | |
| 2125 lower = mid; | |
| 2126 } else { | |
| 2127 upper = mid; | |
| 2128 break; | |
| 2129 } | |
| 2130 } | |
| 2131 #undef assert_LU_OK | |
| 2132 | |
| 2133 if (match_desc(upper, pc_offset, approximate)) { | |
| 2134 assert(upper == linear_search(this, pc_offset, approximate), "search ok"); | |
| 2135 _pc_desc_cache.add_pc_desc(upper); | |
| 2136 return upper; | |
| 2137 } else { | |
| 2138 assert(NULL == linear_search(this, pc_offset, approximate), "search ok"); | |
| 2139 return NULL; | |
| 2140 } | |
| 2141 } | |
| 2142 | |
| 2143 | |
| 2144 bool nmethod::check_all_dependencies() { | |
| 2145 bool found_check = false; | |
| 2146 // wholesale check of all dependencies | |
| 2147 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
| 2148 if (deps.check_dependency() != NULL) { | |
| 2149 found_check = true; | |
| 2150 NOT_DEBUG(break); | |
| 2151 } | |
| 2152 } | |
| 2153 return found_check; // tell caller if we found anything | |
| 2154 } | |
| 2155 | |
| 2156 bool nmethod::check_dependency_on(DepChange& changes) { | |
| 2157 // What has happened: | |
| 2158 // 1) a new class dependee has been added | |
| 2159 // 2) dependee and all its super classes have been marked | |
| 2160 bool found_check = false; // set true if we are upset | |
| 2161 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
| 2162 // Evaluate only relevant dependencies. | |
| 2163 if (deps.spot_check_dependency_at(changes) != NULL) { | |
| 2164 found_check = true; | |
| 2165 NOT_DEBUG(break); | |
| 2166 } | |
| 2167 } | |
| 2168 return found_check; | |
| 2169 } | |
| 2170 | |
|
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2171 bool nmethod::is_evol_dependent_on(Klass* dependee) { |
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2172 InstanceKlass *dependee_ik = InstanceKlass::cast(dependee); |
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2173 Array<Method*>* dependee_methods = dependee_ik->methods(); |
| 0 | 2174 for (Dependencies::DepStream deps(this); deps.next(); ) { |
| 2175 if (deps.type() == Dependencies::evol_method) { | |
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2176 Method* method = deps.method_argument(0); |
| 0 | 2177 for (int j = 0; j < dependee_methods->length(); j++) { |
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2178 if (dependee_methods->at(j) == method) { |
| 0 | 2179 // RC_TRACE macro has an embedded ResourceMark |
| 2180 RC_TRACE(0x01000000, | |
| 2181 ("Found evol dependency of nmethod %s.%s(%s) compile_id=%d on method %s.%s(%s)", | |
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2182 _method->method_holder()->external_name(), |
| 0 | 2183 _method->name()->as_C_string(), |
| 2184 _method->signature()->as_C_string(), compile_id(), | |
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2185 method->method_holder()->external_name(), |
| 0 | 2186 method->name()->as_C_string(), |
| 2187 method->signature()->as_C_string())); | |
| 2188 if (TraceDependencies || LogCompilation) | |
| 2189 deps.log_dependency(dependee); | |
| 2190 return true; | |
| 2191 } | |
| 2192 } | |
| 2193 } | |
| 2194 } | |
| 2195 return false; | |
| 2196 } | |
| 2197 | |
| 2198 // Called from mark_for_deoptimization, when dependee is invalidated. | |
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2199 bool nmethod::is_dependent_on_method(Method* dependee) { |
| 0 | 2200 for (Dependencies::DepStream deps(this); deps.next(); ) { |
| 2201 if (deps.type() != Dependencies::evol_method) | |
| 2202 continue; | |
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2203 Method* method = deps.method_argument(0); |
| 0 | 2204 if (method == dependee) return true; |
| 2205 } | |
| 2206 return false; | |
| 2207 } | |
| 2208 | |
| 2209 | |
| 2210 bool nmethod::is_patchable_at(address instr_addr) { | |
| 1748 | 2211 assert(insts_contains(instr_addr), "wrong nmethod used"); |
| 0 | 2212 if (is_zombie()) { |
| 2213 // a zombie may never be patched | |
| 2214 return false; | |
| 2215 } | |
| 2216 return true; | |
| 2217 } | |
| 2218 | |
| 2219 | |
| 2220 address nmethod::continuation_for_implicit_exception(address pc) { | |
| 2221 // Exception happened outside inline-cache check code => we are inside | |
| 2222 // an active nmethod => use cpc to determine a return address | |
| 1748 | 2223 int exception_offset = pc - code_begin(); |
| 0 | 2224 int cont_offset = ImplicitExceptionTable(this).at( exception_offset ); |
| 2225 #ifdef ASSERT | |
| 2226 if (cont_offset == 0) { | |
| 2227 Thread* thread = ThreadLocalStorage::get_thread_slow(); | |
| 2228 ResetNoHandleMark rnm; // Might be called from LEAF/QUICK ENTRY | |
| 2229 HandleMark hm(thread); | |
| 2230 ResourceMark rm(thread); | |
| 2231 CodeBlob* cb = CodeCache::find_blob(pc); | |
| 2232 assert(cb != NULL && cb == this, ""); | |
| 2233 tty->print_cr("implicit exception happened at " INTPTR_FORMAT, pc); | |
| 2234 print(); | |
| 2235 method()->print_codes(); | |
| 2236 print_code(); | |
| 2237 print_pcs(); | |
| 2238 } | |
| 2239 #endif | |
| 1250 | 2240 if (cont_offset == 0) { |
| 2241 // Let the normal error handling report the exception | |
| 2242 return NULL; | |
| 2243 } | |
| 1748 | 2244 return code_begin() + cont_offset; |
| 0 | 2245 } |
| 2246 | |
| 2247 | |
| 2248 | |
| 2249 void nmethod_init() { | |
| 2250 // make sure you didn't forget to adjust the filler fields | |
| 2251 assert(sizeof(nmethod) % oopSize == 0, "nmethod size must be multiple of a word"); | |
| 2252 } | |
| 2253 | |
| 2254 | |
| 2255 //------------------------------------------------------------------------------------------- | |
| 2256 | |
| 2257 | |
| 2258 // QQQ might we make this work from a frame?? | |
| 2259 nmethodLocker::nmethodLocker(address pc) { | |
| 2260 CodeBlob* cb = CodeCache::find_blob(pc); | |
| 2261 guarantee(cb != NULL && cb->is_nmethod(), "bad pc for a nmethod found"); | |
| 2262 _nm = (nmethod*)cb; | |
| 2263 lock_nmethod(_nm); | |
| 2264 } | |
| 2265 | |
|
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2266 // Only JvmtiDeferredEvent::compiled_method_unload_event() |
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2267 // should pass zombie_ok == true. |
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2268 void nmethodLocker::lock_nmethod(nmethod* nm, bool zombie_ok) { |
| 0 | 2269 if (nm == NULL) return; |
| 2270 Atomic::inc(&nm->_lock_count); | |
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2271 guarantee(zombie_ok || !nm->is_zombie(), "cannot lock a zombie method"); |
| 0 | 2272 } |
| 2273 | |
| 2274 void nmethodLocker::unlock_nmethod(nmethod* nm) { | |
| 2275 if (nm == NULL) return; | |
| 2276 Atomic::dec(&nm->_lock_count); | |
| 2277 guarantee(nm->_lock_count >= 0, "unmatched nmethod lock/unlock"); | |
| 2278 } | |
| 2279 | |
| 1204 | 2280 |
| 2281 // ----------------------------------------------------------------------------- | |
| 2282 // nmethod::get_deopt_original_pc | |
| 2283 // | |
| 2284 // Return the original PC for the given PC if: | |
| 2285 // (a) the given PC belongs to a nmethod and | |
| 2286 // (b) it is a deopt PC | |
| 2287 address nmethod::get_deopt_original_pc(const frame* fr) { | |
| 2288 if (fr->cb() == NULL) return NULL; | |
| 2289 | |
| 2290 nmethod* nm = fr->cb()->as_nmethod_or_null(); | |
| 2291 if (nm != NULL && nm->is_deopt_pc(fr->pc())) | |
| 2292 return nm->get_original_pc(fr); | |
| 2293 | |
| 2294 return NULL; | |
| 0 | 2295 } |
| 2296 | |
| 2297 | |
| 2298 // ----------------------------------------------------------------------------- | |
|
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2299 // MethodHandle |
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2300 |
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2301 bool nmethod::is_method_handle_return(address return_pc) { |
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2302 if (!has_method_handle_invokes()) return false; |
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2303 PcDesc* pd = pc_desc_at(return_pc); |
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2304 if (pd == NULL) |
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2305 return false; |
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2306 return pd->is_method_handle_invoke(); |
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2307 } |
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2308 |
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2309 |
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2310 // ----------------------------------------------------------------------------- |
| 0 | 2311 // Verification |
| 2312 | |
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2313 class VerifyOopsClosure: public OopClosure { |
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2314 nmethod* _nm; |
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2315 bool _ok; |
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2316 public: |
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2317 VerifyOopsClosure(nmethod* nm) : _nm(nm), _ok(true) { } |
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2318 bool ok() { return _ok; } |
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2319 virtual void do_oop(oop* p) { |
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|
2320 if ((*p) == NULL || (*p)->is_oop()) return; |
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2321 if (_ok) { |
|
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2322 _nm->print_nmethod(true); |
|
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2323 _ok = false; |
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|
2324 } |
|
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2325 tty->print_cr("*** non-oop "PTR_FORMAT" found at "PTR_FORMAT" (offset %d)", |
|
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2326 (intptr_t)(*p), (intptr_t)p, (int)((intptr_t)p - (intptr_t)_nm)); |
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|
2327 } |
|
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2328 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
|
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|
2329 }; |
|
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|
2330 |
| 0 | 2331 void nmethod::verify() { |
| 2332 | |
| 2333 // Hmm. OSR methods can be deopted but not marked as zombie or not_entrant | |
| 2334 // seems odd. | |
| 2335 | |
| 2336 if( is_zombie() || is_not_entrant() ) | |
| 2337 return; | |
| 2338 | |
| 2339 // Make sure all the entry points are correctly aligned for patching. | |
| 2340 NativeJump::check_verified_entry_alignment(entry_point(), verified_entry_point()); | |
| 2341 | |
|
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2342 // assert(method()->is_oop(), "must be valid"); |
| 0 | 2343 |
| 2344 ResourceMark rm; | |
| 2345 | |
| 2346 if (!CodeCache::contains(this)) { | |
|
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|
2347 fatal(err_msg("nmethod at " INTPTR_FORMAT " not in zone", this)); |
| 0 | 2348 } |
| 2349 | |
| 2350 if(is_native_method() ) | |
| 2351 return; | |
| 2352 | |
| 2353 nmethod* nm = CodeCache::find_nmethod(verified_entry_point()); | |
| 2354 if (nm != this) { | |
|
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2355 fatal(err_msg("findNMethod did not find this nmethod (" INTPTR_FORMAT ")", |
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|
2356 this)); |
| 0 | 2357 } |
| 2358 | |
| 2359 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
| 2360 if (! p->verify(this)) { | |
| 2361 tty->print_cr("\t\tin nmethod at " INTPTR_FORMAT " (pcs)", this); | |
| 2362 } | |
| 2363 } | |
| 2364 | |
|
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2365 VerifyOopsClosure voc(this); |
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|
2366 oops_do(&voc); |
|
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2367 assert(voc.ok(), "embedded oops must be OK"); |
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2368 verify_scavenge_root_oops(); |
|
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|
2369 |
| 0 | 2370 verify_scopes(); |
| 2371 } | |
| 2372 | |
| 2373 | |
| 2374 void nmethod::verify_interrupt_point(address call_site) { | |
| 2375 // This code does not work in release mode since | |
| 2376 // owns_lock only is available in debug mode. | |
| 2377 CompiledIC* ic = NULL; | |
| 2378 Thread *cur = Thread::current(); | |
| 2379 if (CompiledIC_lock->owner() == cur || | |
| 2380 ((cur->is_VM_thread() || cur->is_ConcurrentGC_thread()) && | |
| 2381 SafepointSynchronize::is_at_safepoint())) { | |
|
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2382 ic = CompiledIC_at(this, call_site); |
| 0 | 2383 CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops()); |
| 2384 } else { | |
| 2385 MutexLocker ml_verify (CompiledIC_lock); | |
|
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2386 ic = CompiledIC_at(this, call_site); |
| 0 | 2387 } |
| 2388 PcDesc* pd = pc_desc_at(ic->end_of_call()); | |
| 2389 assert(pd != NULL, "PcDesc must exist"); | |
| 2390 for (ScopeDesc* sd = new ScopeDesc(this, pd->scope_decode_offset(), | |
|
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|
2391 pd->obj_decode_offset(), pd->should_reexecute(), |
|
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|
2392 pd->return_oop()); |
| 0 | 2393 !sd->is_top(); sd = sd->sender()) { |
| 2394 sd->verify(); | |
| 2395 } | |
| 2396 } | |
| 2397 | |
| 2398 void nmethod::verify_scopes() { | |
| 2399 if( !method() ) return; // Runtime stubs have no scope | |
| 2400 if (method()->is_native()) return; // Ignore stub methods. | |
| 2401 // iterate through all interrupt point | |
| 2402 // and verify the debug information is valid. | |
| 2403 RelocIterator iter((nmethod*)this); | |
| 2404 while (iter.next()) { | |
| 2405 address stub = NULL; | |
| 2406 switch (iter.type()) { | |
| 2407 case relocInfo::virtual_call_type: | |
| 2408 verify_interrupt_point(iter.addr()); | |
| 2409 break; | |
| 2410 case relocInfo::opt_virtual_call_type: | |
| 2411 stub = iter.opt_virtual_call_reloc()->static_stub(); | |
| 2412 verify_interrupt_point(iter.addr()); | |
| 2413 break; | |
| 2414 case relocInfo::static_call_type: | |
| 2415 stub = iter.static_call_reloc()->static_stub(); | |
| 2416 //verify_interrupt_point(iter.addr()); | |
| 2417 break; | |
| 2418 case relocInfo::runtime_call_type: | |
| 2419 address destination = iter.reloc()->value(); | |
| 2420 // Right now there is no way to find out which entries support | |
| 2421 // an interrupt point. It would be nice if we had this | |
| 2422 // information in a table. | |
| 2423 break; | |
| 2424 } | |
| 2425 assert(stub == NULL || stub_contains(stub), "static call stub outside stub section"); | |
| 2426 } | |
| 2427 } | |
| 2428 | |
| 2429 | |
| 2430 // ----------------------------------------------------------------------------- | |
| 2431 // Non-product code | |
| 2432 #ifndef PRODUCT | |
| 2433 | |
|
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2434 class DebugScavengeRoot: public OopClosure { |
|
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|
2435 nmethod* _nm; |
|
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|
2436 bool _ok; |
|
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|
2437 public: |
|
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|
2438 DebugScavengeRoot(nmethod* nm) : _nm(nm), _ok(true) { } |
|
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|
2439 bool ok() { return _ok; } |
|
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|
2440 virtual void do_oop(oop* p) { |
|
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|
2441 if ((*p) == NULL || !(*p)->is_scavengable()) return; |
|
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|
2442 if (_ok) { |
|
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|
2443 _nm->print_nmethod(true); |
|
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|
2444 _ok = false; |
|
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|
2445 } |
|
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diff
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|
2446 tty->print_cr("*** scavengable oop "PTR_FORMAT" found at "PTR_FORMAT" (offset %d)", |
|
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|
2447 (intptr_t)(*p), (intptr_t)p, (int)((intptr_t)p - (intptr_t)_nm)); |
|
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diff
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|
2448 (*p)->print(); |
|
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changeset
|
2449 } |
|
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|
2450 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
|
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|
2451 }; |
| 0 | 2452 |
|
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|
2453 void nmethod::verify_scavenge_root_oops() { |
|
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|
2454 if (!on_scavenge_root_list()) { |
|
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|
2455 // Actually look inside, to verify the claim that it's clean. |
|
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|
2456 DebugScavengeRoot debug_scavenge_root(this); |
|
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|
2457 oops_do(&debug_scavenge_root); |
|
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|
2458 if (!debug_scavenge_root.ok()) |
|
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diff
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|
2459 fatal("found an unadvertised bad scavengable oop in the code cache"); |
| 0 | 2460 } |
|
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|
2461 assert(scavenge_root_not_marked(), ""); |
| 0 | 2462 } |
| 2463 | |
|
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|
2464 #endif // PRODUCT |
| 0 | 2465 |
| 2466 // Printing operations | |
| 2467 | |
| 2468 void nmethod::print() const { | |
| 2469 ResourceMark rm; | |
| 2470 ttyLocker ttyl; // keep the following output all in one block | |
| 2471 | |
|
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
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2376
diff
changeset
|
2472 tty->print("Compiled method "); |
| 0 | 2473 |
| 2474 if (is_compiled_by_c1()) { | |
| 2475 tty->print("(c1) "); | |
| 2476 } else if (is_compiled_by_c2()) { | |
| 2477 tty->print("(c2) "); | |
| 1692 | 2478 } else if (is_compiled_by_shark()) { |
| 2479 tty->print("(shark) "); | |
| 0 | 2480 } else { |
| 2481 tty->print("(nm) "); | |
| 2482 } | |
| 2483 | |
|
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
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diff
changeset
|
2484 print_on(tty, NULL); |
|
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
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diff
changeset
|
2485 |
| 0 | 2486 if (WizardMode) { |
| 2487 tty->print("((nmethod*) "INTPTR_FORMAT ") ", this); | |
| 2488 tty->print(" for method " INTPTR_FORMAT , (address)method()); | |
| 2489 tty->print(" { "); | |
| 2490 if (is_in_use()) tty->print("in_use "); | |
| 2491 if (is_not_entrant()) tty->print("not_entrant "); | |
| 2492 if (is_zombie()) tty->print("zombie "); | |
| 2493 if (is_unloaded()) tty->print("unloaded "); | |
|
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|
2494 if (on_scavenge_root_list()) tty->print("scavenge_root "); |
| 0 | 2495 tty->print_cr("}:"); |
| 2496 } | |
| 2497 if (size () > 0) tty->print_cr(" total in heap [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
| 2498 (address)this, | |
| 2499 (address)this + size(), | |
| 2500 size()); | |
| 2501 if (relocation_size () > 0) tty->print_cr(" relocation [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
| 2502 relocation_begin(), | |
| 2503 relocation_end(), | |
| 2504 relocation_size()); | |
|
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1748
diff
changeset
|
2505 if (consts_size () > 0) tty->print_cr(" constants [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
|
0878d7bae69f
6961697: move nmethod constants section before instruction section
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1748
diff
changeset
|
2506 consts_begin(), |
|
0878d7bae69f
6961697: move nmethod constants section before instruction section
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1748
diff
changeset
|
2507 consts_end(), |
|
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diff
changeset
|
2508 consts_size()); |
| 1748 | 2509 if (insts_size () > 0) tty->print_cr(" main code [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
| 2510 insts_begin(), | |
| 2511 insts_end(), | |
| 2512 insts_size()); | |
| 0 | 2513 if (stub_size () > 0) tty->print_cr(" stub code [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
| 2514 stub_begin(), | |
| 2515 stub_end(), | |
| 2516 stub_size()); | |
|
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diff
changeset
|
2517 if (oops_size () > 0) tty->print_cr(" oops [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
|
1a5913bf5e19
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diff
changeset
|
2518 oops_begin(), |
|
1a5913bf5e19
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diff
changeset
|
2519 oops_end(), |
|
1a5913bf5e19
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diff
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|
2520 oops_size()); |
|
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|
2521 if (metadata_size () > 0) tty->print_cr(" metadata [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
|
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|
2522 metadata_begin(), |
|
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|
2523 metadata_end(), |
|
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|
2524 metadata_size()); |
| 0 | 2525 if (scopes_data_size () > 0) tty->print_cr(" scopes data [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
| 2526 scopes_data_begin(), | |
| 2527 scopes_data_end(), | |
| 2528 scopes_data_size()); | |
| 2529 if (scopes_pcs_size () > 0) tty->print_cr(" scopes pcs [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
| 2530 scopes_pcs_begin(), | |
| 2531 scopes_pcs_end(), | |
| 2532 scopes_pcs_size()); | |
| 2533 if (dependencies_size () > 0) tty->print_cr(" dependencies [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
| 2534 dependencies_begin(), | |
| 2535 dependencies_end(), | |
| 2536 dependencies_size()); | |
| 2537 if (handler_table_size() > 0) tty->print_cr(" handler table [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
| 2538 handler_table_begin(), | |
| 2539 handler_table_end(), | |
| 2540 handler_table_size()); | |
| 2541 if (nul_chk_table_size() > 0) tty->print_cr(" nul chk table [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
| 2542 nul_chk_table_begin(), | |
| 2543 nul_chk_table_end(), | |
| 2544 nul_chk_table_size()); | |
| 2545 } | |
| 2546 | |
|
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|
2547 void nmethod::print_code() { |
|
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|
2548 HandleMark hm; |
|
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|
2549 ResourceMark m; |
|
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|
2550 Disassembler::decode(this); |
|
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|
2551 } |
|
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|
2552 |
|
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|
2553 |
|
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|
2554 #ifndef PRODUCT |
| 0 | 2555 |
| 2556 void nmethod::print_scopes() { | |
| 2557 // Find the first pc desc for all scopes in the code and print it. | |
| 2558 ResourceMark rm; | |
| 2559 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
| 2560 if (p->scope_decode_offset() == DebugInformationRecorder::serialized_null) | |
| 2561 continue; | |
| 2562 | |
| 2563 ScopeDesc* sd = scope_desc_at(p->real_pc(this)); | |
| 2564 sd->print_on(tty, p); | |
| 2565 } | |
| 2566 } | |
| 2567 | |
| 2568 void nmethod::print_dependencies() { | |
| 2569 ResourceMark rm; | |
| 2570 ttyLocker ttyl; // keep the following output all in one block | |
| 2571 tty->print_cr("Dependencies:"); | |
| 2572 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
| 2573 deps.print_dependency(); | |
|
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|
2574 Klass* ctxk = deps.context_type(); |
| 0 | 2575 if (ctxk != NULL) { |
| 6983 | 2576 if (ctxk->oop_is_instance() && ((InstanceKlass*)ctxk)->is_dependent_nmethod(this)) { |
| 2577 tty->print_cr(" [nmethod<=klass]%s", ctxk->external_name()); | |
| 0 | 2578 } |
| 2579 } | |
| 2580 deps.log_dependency(); // put it into the xml log also | |
| 2581 } | |
| 2582 } | |
| 2583 | |
| 2584 | |
| 2585 void nmethod::print_relocations() { | |
| 2586 ResourceMark m; // in case methods get printed via the debugger | |
| 2587 tty->print_cr("relocations:"); | |
| 2588 RelocIterator iter(this); | |
| 2589 iter.print(); | |
| 2590 if (UseRelocIndex) { | |
| 2591 jint* index_end = (jint*)relocation_end() - 1; | |
| 2592 jint index_size = *index_end; | |
| 2593 jint* index_start = (jint*)( (address)index_end - index_size ); | |
| 2594 tty->print_cr(" index @" INTPTR_FORMAT ": index_size=%d", index_start, index_size); | |
| 2595 if (index_size > 0) { | |
| 2596 jint* ip; | |
| 2597 for (ip = index_start; ip+2 <= index_end; ip += 2) | |
| 2598 tty->print_cr(" (%d %d) addr=" INTPTR_FORMAT " @" INTPTR_FORMAT, | |
| 2599 ip[0], | |
| 2600 ip[1], | |
| 2601 header_end()+ip[0], | |
| 2602 relocation_begin()-1+ip[1]); | |
| 2603 for (; ip < index_end; ip++) | |
| 2604 tty->print_cr(" (%d ?)", ip[0]); | |
| 2605 tty->print_cr(" @" INTPTR_FORMAT ": index_size=%d", ip, *ip++); | |
| 2606 tty->print_cr("reloc_end @" INTPTR_FORMAT ":", ip); | |
| 2607 } | |
| 2608 } | |
| 2609 } | |
| 2610 | |
| 2611 | |
| 2612 void nmethod::print_pcs() { | |
| 2613 ResourceMark m; // in case methods get printed via debugger | |
| 2614 tty->print_cr("pc-bytecode offsets:"); | |
| 2615 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
| 2616 p->print(this); | |
| 2617 } | |
| 2618 } | |
| 2619 | |
|
100
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diff
changeset
|
2620 #endif // PRODUCT |
| 0 | 2621 |
| 2622 const char* nmethod::reloc_string_for(u_char* begin, u_char* end) { | |
| 2623 RelocIterator iter(this, begin, end); | |
| 2624 bool have_one = false; | |
| 2625 while (iter.next()) { | |
| 2626 have_one = true; | |
| 2627 switch (iter.type()) { | |
| 2628 case relocInfo::none: return "no_reloc"; | |
| 2629 case relocInfo::oop_type: { | |
| 2630 stringStream st; | |
| 2631 oop_Relocation* r = iter.oop_reloc(); | |
| 2632 oop obj = r->oop_value(); | |
| 2633 st.print("oop("); | |
| 2634 if (obj == NULL) st.print("NULL"); | |
| 2635 else obj->print_value_on(&st); | |
| 2636 st.print(")"); | |
| 2637 return st.as_string(); | |
| 2638 } | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2639 case relocInfo::metadata_type: { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2640 stringStream st; |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6266
diff
changeset
|
2641 metadata_Relocation* r = iter.metadata_reloc(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6266
diff
changeset
|
2642 Metadata* obj = r->metadata_value(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2643 st.print("metadata("); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2644 if (obj == NULL) st.print("NULL"); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2645 else obj->print_value_on(&st); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2646 st.print(")"); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
2647 return st.as_string(); |
|
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diff
changeset
|
2648 } |
| 0 | 2649 case relocInfo::virtual_call_type: return "virtual_call"; |
| 2650 case relocInfo::opt_virtual_call_type: return "optimized virtual_call"; | |
| 2651 case relocInfo::static_call_type: return "static_call"; | |
| 2652 case relocInfo::static_stub_type: return "static_stub"; | |
| 2653 case relocInfo::runtime_call_type: return "runtime_call"; | |
| 2654 case relocInfo::external_word_type: return "external_word"; | |
| 2655 case relocInfo::internal_word_type: return "internal_word"; | |
| 2656 case relocInfo::section_word_type: return "section_word"; | |
| 2657 case relocInfo::poll_type: return "poll"; | |
| 2658 case relocInfo::poll_return_type: return "poll_return"; | |
| 2659 case relocInfo::type_mask: return "type_bit_mask"; | |
| 2660 } | |
| 2661 } | |
| 2662 return have_one ? "other" : NULL; | |
| 2663 } | |
| 2664 | |
| 2665 // Return a the last scope in (begin..end] | |
| 2666 ScopeDesc* nmethod::scope_desc_in(address begin, address end) { | |
| 2667 PcDesc* p = pc_desc_near(begin+1); | |
| 2668 if (p != NULL && p->real_pc(this) <= end) { | |
| 2669 return new ScopeDesc(this, p->scope_decode_offset(), | |
|
1253
f70b0d9ab095
6910618: C2: Error: assert(d->is_oop(),"JVM_ArrayCopy: dst not an oop")
kvn
parents:
1250
diff
changeset
|
2670 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
|
2671 p->return_oop()); |
| 0 | 2672 } |
| 2673 return NULL; | |
| 2674 } | |
| 2675 | |
|
6796
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
parents:
6792
diff
changeset
|
2676 void nmethod::print_nmethod_labels(outputStream* stream, address block_begin) const { |
|
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2677 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
|
2678 if (block_begin == verified_entry_point()) stream->print_cr("[Verified Entry Point]"); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2679 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
|
2680 if (block_begin == stub_begin()) stream->print_cr("[Stub Code]"); |
| 1204 | 2681 if (block_begin == deopt_handler_begin()) stream->print_cr("[Deopt Handler Code]"); |
|
1691
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
twisti
parents:
1644
diff
changeset
|
2682 |
|
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
twisti
parents:
1644
diff
changeset
|
2683 if (has_method_handle_invokes()) |
|
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
twisti
parents:
1644
diff
changeset
|
2684 if (block_begin == deopt_mh_handler_begin()) stream->print_cr("[Deopt MH Handler Code]"); |
|
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
twisti
parents:
1644
diff
changeset
|
2685 |
|
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2686 if (block_begin == consts_begin()) stream->print_cr("[Constants]"); |
|
1691
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
twisti
parents:
1644
diff
changeset
|
2687 |
|
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2688 if (block_begin == entry_point()) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2689 methodHandle m = method(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2690 if (m.not_null()) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2691 stream->print(" # "); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2692 m->print_value_on(stream); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2693 stream->cr(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2694 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2695 if (m.not_null() && !is_osr_method()) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2696 ResourceMark rm; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2697 int sizeargs = m->size_of_parameters(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2698 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType, sizeargs); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2699 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, sizeargs); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2700 { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2701 int sig_index = 0; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2702 if (!m->is_static()) |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2703 sig_bt[sig_index++] = T_OBJECT; // 'this' |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2704 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
|
2705 BasicType t = ss.type(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2706 sig_bt[sig_index++] = t; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2707 if (type2size[t] == 2) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2708 sig_bt[sig_index++] = T_VOID; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2709 } else { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2710 assert(type2size[t] == 1, "size is 1 or 2"); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2711 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2712 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2713 assert(sig_index == sizeargs, ""); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2714 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2715 const char* spname = "sp"; // make arch-specific? |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2716 intptr_t out_preserve = SharedRuntime::java_calling_convention(sig_bt, regs, sizeargs, false); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2717 int stack_slot_offset = this->frame_size() * wordSize; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2718 int tab1 = 14, tab2 = 24; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2719 int sig_index = 0; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2720 int arg_index = (m->is_static() ? 0 : -1); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2721 bool did_old_sp = false; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2722 for (SignatureStream ss(m->signature()); !ss.at_return_type(); ) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2723 bool at_this = (arg_index == -1); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2724 bool at_old_sp = false; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2725 BasicType t = (at_this ? T_OBJECT : ss.type()); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2726 assert(t == sig_bt[sig_index], "sigs in sync"); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2727 if (at_this) |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2728 stream->print(" # this: "); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2729 else |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2730 stream->print(" # parm%d: ", arg_index); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2731 stream->move_to(tab1); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2732 VMReg fst = regs[sig_index].first(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2733 VMReg snd = regs[sig_index].second(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2734 if (fst->is_reg()) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2735 stream->print("%s", fst->name()); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2736 if (snd->is_valid()) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2737 stream->print(":%s", snd->name()); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2738 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2739 } else if (fst->is_stack()) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2740 int offset = fst->reg2stack() * VMRegImpl::stack_slot_size + stack_slot_offset; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2741 if (offset == stack_slot_offset) at_old_sp = true; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2742 stream->print("[%s+0x%x]", spname, offset); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2743 } else { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2744 stream->print("reg%d:%d??", (int)(intptr_t)fst, (int)(intptr_t)snd); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2745 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2746 stream->print(" "); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2747 stream->move_to(tab2); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2748 stream->print("= "); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2749 if (at_this) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2750 m->method_holder()->print_value_on(stream); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2751 } else { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2752 bool did_name = false; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2753 if (!at_this && ss.is_object()) { |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2142
diff
changeset
|
2754 Symbol* name = ss.as_symbol_or_null(); |
|
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2755 if (name != NULL) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2756 name->print_value_on(stream); |
|
4e6abf09f540
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2757 did_name = true; |
|
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|
2758 } |
|
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|
2759 } |
|
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|
2760 if (!did_name) |
|
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2761 stream->print("%s", type2name(t)); |
|
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2762 } |
|
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|
2763 if (at_old_sp) { |
|
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2764 stream->print(" (%s of caller)", spname); |
|
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2765 did_old_sp = true; |
|
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2766 } |
|
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2767 stream->cr(); |
|
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|
2768 sig_index += type2size[t]; |
|
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2769 arg_index += 1; |
|
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2770 if (!at_this) ss.next(); |
|
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2771 } |
|
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2772 if (!did_old_sp) { |
|
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2773 stream->print(" # "); |
|
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2774 stream->move_to(tab1); |
|
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2775 stream->print("[%s+0x%x]", spname, stack_slot_offset); |
|
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2776 stream->print(" (%s of caller)", spname); |
|
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2777 stream->cr(); |
|
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|
2778 } |
|
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|
2779 } |
|
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|
2780 } |
|
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|
2781 } |
|
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|
2782 |
| 0 | 2783 void nmethod::print_code_comment_on(outputStream* st, int column, u_char* begin, u_char* end) { |
| 2784 // First, find an oopmap in (begin, end]. | |
| 2785 // We use the odd half-closed interval so that oop maps and scope descs | |
| 2786 // which are tied to the byte after a call are printed with the call itself. | |
| 1748 | 2787 address base = code_begin(); |
| 0 | 2788 OopMapSet* oms = oop_maps(); |
| 2789 if (oms != NULL) { | |
| 2790 for (int i = 0, imax = oms->size(); i < imax; i++) { | |
| 2791 OopMap* om = oms->at(i); | |
| 2792 address pc = base + om->offset(); | |
| 2793 if (pc > begin) { | |
| 2794 if (pc <= end) { | |
|
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|
2795 st->move_to(column); |
|
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|
2796 st->print("; "); |
|
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|
2797 om->print_on(st); |
| 0 | 2798 } |
| 2799 break; | |
| 2800 } | |
| 2801 } | |
| 2802 } | |
|
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2803 |
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|
2804 // Print any debug info present at this pc. |
| 0 | 2805 ScopeDesc* sd = scope_desc_in(begin, end); |
| 2806 if (sd != NULL) { | |
|
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|
2807 st->move_to(column); |
| 0 | 2808 if (sd->bci() == SynchronizationEntryBCI) { |
| 2809 st->print(";*synchronization entry"); | |
| 2810 } else { | |
|
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2811 if (sd->method() == NULL) { |
|
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2812 st->print("method is NULL"); |
| 0 | 2813 } else if (sd->method()->is_native()) { |
|
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2814 st->print("method is native"); |
| 0 | 2815 } else { |
| 2142 | 2816 Bytecodes::Code bc = sd->method()->java_code_at(sd->bci()); |
| 0 | 2817 st->print(";*%s", Bytecodes::name(bc)); |
| 2818 switch (bc) { | |
| 2819 case Bytecodes::_invokevirtual: | |
| 2820 case Bytecodes::_invokespecial: | |
| 2821 case Bytecodes::_invokestatic: | |
| 2822 case Bytecodes::_invokeinterface: | |
| 2823 { | |
| 2142 | 2824 Bytecode_invoke invoke(sd->method(), sd->bci()); |
| 0 | 2825 st->print(" "); |
| 2142 | 2826 if (invoke.name() != NULL) |
| 2827 invoke.name()->print_symbol_on(st); | |
| 0 | 2828 else |
| 2829 st->print("<UNKNOWN>"); | |
| 2830 break; | |
| 2831 } | |
| 2832 case Bytecodes::_getfield: | |
| 2833 case Bytecodes::_putfield: | |
| 2834 case Bytecodes::_getstatic: | |
| 2835 case Bytecodes::_putstatic: | |
| 2836 { | |
| 2142 | 2837 Bytecode_field field(sd->method(), sd->bci()); |
| 0 | 2838 st->print(" "); |
| 2142 | 2839 if (field.name() != NULL) |
| 2840 field.name()->print_symbol_on(st); | |
| 0 | 2841 else |
| 2842 st->print("<UNKNOWN>"); | |
| 2843 } | |
| 2844 } | |
| 2845 } | |
| 2846 } | |
|
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|
2847 |
| 0 | 2848 // Print all scopes |
| 2849 for (;sd != NULL; sd = sd->sender()) { | |
|
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|
2850 st->move_to(column); |
| 0 | 2851 st->print("; -"); |
|
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|
2852 if (sd->method() == NULL) { |
|
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|
2853 st->print("method is NULL"); |
| 0 | 2854 } else { |
| 2855 sd->method()->print_short_name(st); | |
| 2856 } | |
| 2857 int lineno = sd->method()->line_number_from_bci(sd->bci()); | |
| 2858 if (lineno != -1) { | |
| 2859 st->print("@%d (line %d)", sd->bci(), lineno); | |
| 2860 } else { | |
| 2861 st->print("@%d", sd->bci()); | |
| 2862 } | |
| 2863 st->cr(); | |
| 2864 } | |
| 2865 } | |
| 2866 | |
| 2867 // Print relocation information | |
| 2868 const char* str = reloc_string_for(begin, end); | |
| 2869 if (str != NULL) { | |
| 2870 if (sd != NULL) st->cr(); | |
|
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|
2871 st->move_to(column); |
| 0 | 2872 st->print("; {%s}", str); |
| 2873 } | |
| 1748 | 2874 int cont_offset = ImplicitExceptionTable(this).at(begin - code_begin()); |
| 0 | 2875 if (cont_offset != 0) { |
|
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|
2876 st->move_to(column); |
| 1748 | 2877 st->print("; implicit exception: dispatches to " INTPTR_FORMAT, code_begin() + cont_offset); |
| 0 | 2878 } |
| 2879 | |
| 2880 } | |
| 2881 | |
|
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|
2882 #ifndef PRODUCT |
|
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|
2883 |
| 0 | 2884 void nmethod::print_value_on(outputStream* st) const { |
|
2405
3d58a4983660
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2376
diff
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|
2885 st->print("nmethod"); |
|
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diff
changeset
|
2886 print_on(st, NULL); |
| 0 | 2887 } |
| 2888 | |
| 2889 void nmethod::print_calls(outputStream* st) { | |
| 2890 RelocIterator iter(this); | |
| 2891 while (iter.next()) { | |
| 2892 switch (iter.type()) { | |
| 2893 case relocInfo::virtual_call_type: | |
| 2894 case relocInfo::opt_virtual_call_type: { | |
| 2895 VerifyMutexLocker mc(CompiledIC_lock); | |
| 2896 CompiledIC_at(iter.reloc())->print(); | |
| 2897 break; | |
| 2898 } | |
| 2899 case relocInfo::static_call_type: | |
| 2900 st->print_cr("Static call at " INTPTR_FORMAT, iter.reloc()->addr()); | |
| 2901 compiledStaticCall_at(iter.reloc())->print(); | |
| 2902 break; | |
| 2903 } | |
| 2904 } | |
| 2905 } | |
| 2906 | |
| 2907 void nmethod::print_handler_table() { | |
| 2908 ExceptionHandlerTable(this).print(); | |
| 2909 } | |
| 2910 | |
| 2911 void nmethod::print_nul_chk_table() { | |
| 1748 | 2912 ImplicitExceptionTable(this).print(code_begin()); |
| 0 | 2913 } |
| 2914 | |
| 2915 void nmethod::print_statistics() { | |
| 2916 ttyLocker ttyl; | |
| 2917 if (xtty != NULL) xtty->head("statistics type='nmethod'"); | |
| 2918 nmethod_stats.print_native_nmethod_stats(); | |
| 2919 nmethod_stats.print_nmethod_stats(); | |
| 2920 DebugInformationRecorder::print_statistics(); | |
| 2921 nmethod_stats.print_pc_stats(); | |
| 2922 Dependencies::print_statistics(); | |
| 2923 if (xtty != NULL) xtty->tail("statistics"); | |
| 2924 } | |
| 2925 | |
| 2926 #endif // PRODUCT |