Mercurial > hg > truffle
annotate src/share/vm/code/nmethod.cpp @ 12758:ca33948fb804
nmethod.cpp: s/unknwon/unknown/
| author | Gilles Duboscq <duboscq@ssw.jku.at> |
|---|---|
| date | Tue, 12 Nov 2013 11:01:42 +0100 |
| parents | 0e998f0daddf |
| children | 096c224171c4 790ebab62d23 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "code/codeCache.hpp" | |
| 27 #include "code/compiledIC.hpp" | |
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28 #include "code/dependencies.hpp" |
| 1972 | 29 #include "code/nmethod.hpp" |
| 30 #include "code/scopeDesc.hpp" | |
| 31 #include "compiler/abstractCompiler.hpp" | |
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32 #include "compiler/compileBroker.hpp" |
| 1972 | 33 #include "compiler/compileLog.hpp" |
| 34 #include "compiler/compilerOracle.hpp" | |
| 35 #include "compiler/disassembler.hpp" | |
| 36 #include "interpreter/bytecode.hpp" | |
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37 #include "oops/methodData.hpp" |
| 1972 | 38 #include "prims/jvmtiRedefineClassesTrace.hpp" |
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39 #include "prims/jvmtiImpl.hpp" |
| 1972 | 40 #include "runtime/sharedRuntime.hpp" |
| 41 #include "runtime/sweeper.hpp" | |
| 42 #include "utilities/dtrace.hpp" | |
| 43 #include "utilities/events.hpp" | |
| 44 #include "utilities/xmlstream.hpp" | |
| 45 #ifdef SHARK | |
| 46 #include "shark/sharkCompiler.hpp" | |
| 47 #endif | |
| 9707 | 48 #ifdef GRAAL |
| 49 #include "graal/graalJavaAccess.hpp" | |
| 50 #endif | |
| 0 | 51 |
| 52 #ifdef DTRACE_ENABLED | |
| 53 | |
| 54 // Only bother with this argument setup if dtrace is available | |
| 55 | |
| 4006 | 56 #ifndef USDT2 |
| 0 | 57 HS_DTRACE_PROBE_DECL8(hotspot, compiled__method__load, |
| 58 const char*, int, const char*, int, const char*, int, void*, size_t); | |
| 59 | |
| 60 HS_DTRACE_PROBE_DECL6(hotspot, compiled__method__unload, | |
| 61 char*, int, char*, int, char*, int); | |
| 62 | |
| 63 #define DTRACE_METHOD_UNLOAD_PROBE(method) \ | |
| 64 { \ | |
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65 Method* m = (method); \ |
| 0 | 66 if (m != NULL) { \ |
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67 Symbol* klass_name = m->klass_name(); \ |
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68 Symbol* name = m->name(); \ |
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69 Symbol* signature = m->signature(); \ |
| 0 | 70 HS_DTRACE_PROBE6(hotspot, compiled__method__unload, \ |
| 71 klass_name->bytes(), klass_name->utf8_length(), \ | |
| 72 name->bytes(), name->utf8_length(), \ | |
| 73 signature->bytes(), signature->utf8_length()); \ | |
| 74 } \ | |
| 75 } | |
| 4006 | 76 #else /* USDT2 */ |
| 77 #define DTRACE_METHOD_UNLOAD_PROBE(method) \ | |
| 78 { \ | |
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79 Method* m = (method); \ |
| 4006 | 80 if (m != NULL) { \ |
| 81 Symbol* klass_name = m->klass_name(); \ | |
| 82 Symbol* name = m->name(); \ | |
| 83 Symbol* signature = m->signature(); \ | |
| 84 HOTSPOT_COMPILED_METHOD_UNLOAD( \ | |
| 85 (char *) klass_name->bytes(), klass_name->utf8_length(), \ | |
| 86 (char *) name->bytes(), name->utf8_length(), \ | |
| 87 (char *) signature->bytes(), signature->utf8_length()); \ | |
| 88 } \ | |
| 89 } | |
| 90 #endif /* USDT2 */ | |
| 0 | 91 |
| 92 #else // ndef DTRACE_ENABLED | |
| 93 | |
| 94 #define DTRACE_METHOD_UNLOAD_PROBE(method) | |
| 95 | |
| 96 #endif | |
| 97 | |
| 98 bool nmethod::is_compiled_by_c1() const { | |
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99 if (compiler() == NULL) { |
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100 return false; |
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101 } |
| 0 | 102 return compiler()->is_c1(); |
| 103 } | |
| 9707 | 104 bool nmethod::is_compiled_by_graal() const { |
| 105 if (compiler() == NULL || method() == NULL) return false; // can happen during debug printing | |
| 106 if (is_native_method()) return false; | |
| 107 return compiler()->is_graal(); | |
| 108 } | |
| 0 | 109 bool nmethod::is_compiled_by_c2() const { |
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110 if (compiler() == NULL) { |
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111 return false; |
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112 } |
| 0 | 113 return compiler()->is_c2(); |
| 114 } | |
| 1692 | 115 bool nmethod::is_compiled_by_shark() const { |
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116 if (compiler() == NULL) { |
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117 return false; |
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118 } |
| 1692 | 119 return compiler()->is_shark(); |
| 120 } | |
| 0 | 121 |
| 122 | |
| 123 | |
| 124 //--------------------------------------------------------------------------------- | |
| 125 // NMethod statistics | |
| 126 // They are printed under various flags, including: | |
| 127 // PrintC1Statistics, PrintOptoStatistics, LogVMOutput, and LogCompilation. | |
| 128 // (In the latter two cases, they like other stats are printed to the log only.) | |
| 129 | |
| 130 // These variables are put into one block to reduce relocations | |
| 131 // and make it simpler to print from the debugger. | |
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132 struct java_nmethod_stats_struct { |
| 0 | 133 int nmethod_count; |
| 134 int total_size; | |
| 135 int relocation_size; | |
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136 int consts_size; |
| 1748 | 137 int insts_size; |
| 0 | 138 int stub_size; |
| 139 int scopes_data_size; | |
| 140 int scopes_pcs_size; | |
| 141 int dependencies_size; | |
| 142 int handler_table_size; | |
| 143 int nul_chk_table_size; | |
| 144 int oops_size; | |
| 145 | |
| 146 void note_nmethod(nmethod* nm) { | |
| 147 nmethod_count += 1; | |
| 148 total_size += nm->size(); | |
| 149 relocation_size += nm->relocation_size(); | |
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150 consts_size += nm->consts_size(); |
| 1748 | 151 insts_size += nm->insts_size(); |
| 0 | 152 stub_size += nm->stub_size(); |
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153 oops_size += nm->oops_size(); |
| 0 | 154 scopes_data_size += nm->scopes_data_size(); |
| 155 scopes_pcs_size += nm->scopes_pcs_size(); | |
| 156 dependencies_size += nm->dependencies_size(); | |
| 157 handler_table_size += nm->handler_table_size(); | |
| 158 nul_chk_table_size += nm->nul_chk_table_size(); | |
| 159 } | |
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160 void print_nmethod_stats(const char* name) { |
| 0 | 161 if (nmethod_count == 0) return; |
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162 tty->print_cr("Statistics for %d bytecoded nmethods for %s:", nmethod_count, name); |
| 0 | 163 if (total_size != 0) tty->print_cr(" total in heap = %d", total_size); |
| 164 if (relocation_size != 0) tty->print_cr(" relocation = %d", relocation_size); | |
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165 if (consts_size != 0) tty->print_cr(" constants = %d", consts_size); |
| 1748 | 166 if (insts_size != 0) tty->print_cr(" main code = %d", insts_size); |
| 0 | 167 if (stub_size != 0) tty->print_cr(" stub code = %d", stub_size); |
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168 if (oops_size != 0) tty->print_cr(" oops = %d", oops_size); |
| 0 | 169 if (scopes_data_size != 0) tty->print_cr(" scopes data = %d", scopes_data_size); |
| 170 if (scopes_pcs_size != 0) tty->print_cr(" scopes pcs = %d", scopes_pcs_size); | |
| 171 if (dependencies_size != 0) tty->print_cr(" dependencies = %d", dependencies_size); | |
| 172 if (handler_table_size != 0) tty->print_cr(" handler table = %d", handler_table_size); | |
| 173 if (nul_chk_table_size != 0) tty->print_cr(" nul chk table = %d", nul_chk_table_size); | |
| 174 } | |
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175 }; |
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176 |
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177 struct native_nmethod_stats_struct { |
| 0 | 178 int native_nmethod_count; |
| 179 int native_total_size; | |
| 180 int native_relocation_size; | |
| 1748 | 181 int native_insts_size; |
| 0 | 182 int native_oops_size; |
| 183 void note_native_nmethod(nmethod* nm) { | |
| 184 native_nmethod_count += 1; | |
| 185 native_total_size += nm->size(); | |
| 186 native_relocation_size += nm->relocation_size(); | |
| 1748 | 187 native_insts_size += nm->insts_size(); |
| 0 | 188 native_oops_size += nm->oops_size(); |
| 189 } | |
| 190 void print_native_nmethod_stats() { | |
| 191 if (native_nmethod_count == 0) return; | |
| 192 tty->print_cr("Statistics for %d native nmethods:", native_nmethod_count); | |
| 193 if (native_total_size != 0) tty->print_cr(" N. total size = %d", native_total_size); | |
| 194 if (native_relocation_size != 0) tty->print_cr(" N. relocation = %d", native_relocation_size); | |
| 1748 | 195 if (native_insts_size != 0) tty->print_cr(" N. main code = %d", native_insts_size); |
| 0 | 196 if (native_oops_size != 0) tty->print_cr(" N. oops = %d", native_oops_size); |
| 197 } | |
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198 }; |
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199 |
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200 struct pc_nmethod_stats_struct { |
| 0 | 201 int pc_desc_resets; // number of resets (= number of caches) |
| 202 int pc_desc_queries; // queries to nmethod::find_pc_desc | |
| 203 int pc_desc_approx; // number of those which have approximate true | |
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204 int pc_desc_repeats; // number of _pc_descs[0] hits |
| 0 | 205 int pc_desc_hits; // number of LRU cache hits |
| 206 int pc_desc_tests; // total number of PcDesc examinations | |
| 207 int pc_desc_searches; // total number of quasi-binary search steps | |
| 208 int pc_desc_adds; // number of LUR cache insertions | |
| 209 | |
| 210 void print_pc_stats() { | |
| 211 tty->print_cr("PcDesc Statistics: %d queries, %.2f comparisons per query", | |
| 212 pc_desc_queries, | |
| 213 (double)(pc_desc_tests + pc_desc_searches) | |
| 214 / pc_desc_queries); | |
| 215 tty->print_cr(" caches=%d queries=%d/%d, hits=%d+%d, tests=%d+%d, adds=%d", | |
| 216 pc_desc_resets, | |
| 217 pc_desc_queries, pc_desc_approx, | |
| 218 pc_desc_repeats, pc_desc_hits, | |
| 219 pc_desc_tests, pc_desc_searches, pc_desc_adds); | |
| 220 } | |
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221 }; |
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222 |
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223 #ifdef COMPILER1 |
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224 static java_nmethod_stats_struct c1_java_nmethod_stats; |
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225 #endif |
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226 #ifdef COMPILER2 |
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227 static java_nmethod_stats_struct c2_java_nmethod_stats; |
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228 #endif |
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229 #ifdef GRAAL |
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230 static java_nmethod_stats_struct graal_java_nmethod_stats; |
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231 #endif |
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232 static java_nmethod_stats_struct unknown_java_nmethod_stats; |
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233 |
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234 static native_nmethod_stats_struct native_nmethod_stats; |
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235 static pc_nmethod_stats_struct pc_nmethod_stats; |
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236 |
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237 static void note_java_nmethod(nmethod* nm) { |
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238 #ifdef COMPILER1 |
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239 if (nm->is_compiled_by_c1()) { |
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240 c1_java_nmethod_stats.note_nmethod(nm); |
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241 } else |
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242 #endif |
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243 #ifdef COMPILER2 |
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244 if (nm->is_compiled_by_c2()) { |
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245 c2_java_nmethod_stats.note_nmethod(nm); |
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246 } else |
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247 #endif |
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248 #ifdef GRAAL |
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249 if (nm->is_compiled_by_graal()) { |
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250 graal_java_nmethod_stats.note_nmethod(nm); |
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251 } else |
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252 #endif |
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253 { |
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254 unknown_java_nmethod_stats.note_nmethod(nm); |
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255 } |
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256 } |
| 0 | 257 |
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258 |
| 0 | 259 //--------------------------------------------------------------------------------- |
| 260 | |
| 261 | |
| 262 ExceptionCache::ExceptionCache(Handle exception, address pc, address handler) { | |
| 263 assert(pc != NULL, "Must be non null"); | |
| 264 assert(exception.not_null(), "Must be non null"); | |
| 265 assert(handler != NULL, "Must be non null"); | |
| 266 | |
| 267 _count = 0; | |
| 268 _exception_type = exception->klass(); | |
| 269 _next = NULL; | |
| 270 | |
| 271 add_address_and_handler(pc,handler); | |
| 272 } | |
| 273 | |
| 274 | |
| 275 address ExceptionCache::match(Handle exception, address pc) { | |
| 276 assert(pc != NULL,"Must be non null"); | |
| 277 assert(exception.not_null(),"Must be non null"); | |
| 278 if (exception->klass() == exception_type()) { | |
| 279 return (test_address(pc)); | |
| 280 } | |
| 281 | |
| 282 return NULL; | |
| 283 } | |
| 284 | |
| 285 | |
| 286 bool ExceptionCache::match_exception_with_space(Handle exception) { | |
| 287 assert(exception.not_null(),"Must be non null"); | |
| 288 if (exception->klass() == exception_type() && count() < cache_size) { | |
| 289 return true; | |
| 290 } | |
| 291 return false; | |
| 292 } | |
| 293 | |
| 294 | |
| 295 address ExceptionCache::test_address(address addr) { | |
| 296 for (int i=0; i<count(); i++) { | |
| 297 if (pc_at(i) == addr) { | |
| 298 return handler_at(i); | |
| 299 } | |
| 300 } | |
| 301 return NULL; | |
| 302 } | |
| 303 | |
| 304 | |
| 305 bool ExceptionCache::add_address_and_handler(address addr, address handler) { | |
| 306 if (test_address(addr) == handler) return true; | |
| 307 if (count() < cache_size) { | |
| 308 set_pc_at(count(),addr); | |
| 309 set_handler_at(count(), handler); | |
| 310 increment_count(); | |
| 311 return true; | |
| 312 } | |
| 313 return false; | |
| 314 } | |
| 315 | |
| 316 | |
| 317 // private method for handling exception cache | |
| 318 // These methods are private, and used to manipulate the exception cache | |
| 319 // directly. | |
| 320 ExceptionCache* nmethod::exception_cache_entry_for_exception(Handle exception) { | |
| 321 ExceptionCache* ec = exception_cache(); | |
| 322 while (ec != NULL) { | |
| 323 if (ec->match_exception_with_space(exception)) { | |
| 324 return ec; | |
| 325 } | |
| 326 ec = ec->next(); | |
| 327 } | |
| 328 return NULL; | |
| 329 } | |
| 330 | |
| 331 | |
| 332 //----------------------------------------------------------------------------- | |
| 333 | |
| 334 | |
| 335 // Helper used by both find_pc_desc methods. | |
| 336 static inline bool match_desc(PcDesc* pc, int pc_offset, bool approximate) { | |
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337 NOT_PRODUCT(++pc_nmethod_stats.pc_desc_tests); |
| 0 | 338 if (!approximate) |
| 339 return pc->pc_offset() == pc_offset; | |
| 340 else | |
| 341 return (pc-1)->pc_offset() < pc_offset && pc_offset <= pc->pc_offset(); | |
| 342 } | |
| 343 | |
| 344 void PcDescCache::reset_to(PcDesc* initial_pc_desc) { | |
| 345 if (initial_pc_desc == NULL) { | |
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346 _pc_descs[0] = NULL; // native method; no PcDescs at all |
| 0 | 347 return; |
| 348 } | |
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349 NOT_PRODUCT(++pc_nmethod_stats.pc_desc_resets); |
| 0 | 350 // reset the cache by filling it with benign (non-null) values |
| 351 assert(initial_pc_desc->pc_offset() < 0, "must be sentinel"); | |
| 352 for (int i = 0; i < cache_size; i++) | |
| 353 _pc_descs[i] = initial_pc_desc; | |
| 354 } | |
| 355 | |
| 356 PcDesc* PcDescCache::find_pc_desc(int pc_offset, bool approximate) { | |
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357 NOT_PRODUCT(++pc_nmethod_stats.pc_desc_queries); |
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358 NOT_PRODUCT(if (approximate) ++pc_nmethod_stats.pc_desc_approx); |
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359 |
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360 // Note: one might think that caching the most recently |
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361 // read value separately would be a win, but one would be |
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362 // wrong. When many threads are updating it, the cache |
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363 // line it's in would bounce between caches, negating |
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364 // any benefit. |
| 0 | 365 |
| 366 // In order to prevent race conditions do not load cache elements | |
| 367 // repeatedly, but use a local copy: | |
| 368 PcDesc* res; | |
| 369 | |
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370 // Step one: Check the most recently added value. |
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371 res = _pc_descs[0]; |
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372 if (res == NULL) return NULL; // native method; no PcDescs at all |
| 0 | 373 if (match_desc(res, pc_offset, approximate)) { |
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374 NOT_PRODUCT(++pc_nmethod_stats.pc_desc_repeats); |
| 0 | 375 return res; |
| 376 } | |
| 377 | |
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378 // Step two: Check the rest of the LRU cache. |
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379 for (int i = 1; i < cache_size; ++i) { |
| 0 | 380 res = _pc_descs[i]; |
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381 if (res->pc_offset() < 0) break; // optimization: skip empty cache |
| 0 | 382 if (match_desc(res, pc_offset, approximate)) { |
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383 NOT_PRODUCT(++pc_nmethod_stats.pc_desc_hits); |
| 0 | 384 return res; |
| 385 } | |
| 386 } | |
| 387 | |
| 388 // Report failure. | |
| 389 return NULL; | |
| 390 } | |
| 391 | |
| 392 void PcDescCache::add_pc_desc(PcDesc* pc_desc) { | |
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393 NOT_PRODUCT(++pc_nmethod_stats.pc_desc_adds); |
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394 // Update the LRU cache by shifting pc_desc forward. |
| 0 | 395 for (int i = 0; i < cache_size; i++) { |
| 396 PcDesc* next = _pc_descs[i]; | |
| 397 _pc_descs[i] = pc_desc; | |
| 398 pc_desc = next; | |
| 399 } | |
| 400 } | |
| 401 | |
| 402 // adjust pcs_size so that it is a multiple of both oopSize and | |
| 403 // sizeof(PcDesc) (assumes that if sizeof(PcDesc) is not a multiple | |
| 404 // of oopSize, then 2*sizeof(PcDesc) is) | |
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405 static int adjust_pcs_size(int pcs_size) { |
| 0 | 406 int nsize = round_to(pcs_size, oopSize); |
| 407 if ((nsize % sizeof(PcDesc)) != 0) { | |
| 408 nsize = pcs_size + sizeof(PcDesc); | |
| 409 } | |
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410 assert((nsize % oopSize) == 0, "correct alignment"); |
| 0 | 411 return nsize; |
| 412 } | |
| 413 | |
| 414 //----------------------------------------------------------------------------- | |
| 415 | |
| 416 | |
| 417 void nmethod::add_exception_cache_entry(ExceptionCache* new_entry) { | |
| 418 assert(ExceptionCache_lock->owned_by_self(),"Must hold the ExceptionCache_lock"); | |
| 419 assert(new_entry != NULL,"Must be non null"); | |
| 420 assert(new_entry->next() == NULL, "Must be null"); | |
| 421 | |
| 422 if (exception_cache() != NULL) { | |
| 423 new_entry->set_next(exception_cache()); | |
| 424 } | |
| 425 set_exception_cache(new_entry); | |
| 426 } | |
| 427 | |
| 428 void nmethod::remove_from_exception_cache(ExceptionCache* ec) { | |
| 429 ExceptionCache* prev = NULL; | |
| 430 ExceptionCache* curr = exception_cache(); | |
| 431 assert(curr != NULL, "nothing to remove"); | |
| 432 // find the previous and next entry of ec | |
| 433 while (curr != ec) { | |
| 434 prev = curr; | |
| 435 curr = curr->next(); | |
| 436 assert(curr != NULL, "ExceptionCache not found"); | |
| 437 } | |
| 438 // now: curr == ec | |
| 439 ExceptionCache* next = curr->next(); | |
| 440 if (prev == NULL) { | |
| 441 set_exception_cache(next); | |
| 442 } else { | |
| 443 prev->set_next(next); | |
| 444 } | |
| 445 delete curr; | |
| 446 } | |
| 447 | |
| 448 | |
| 449 // public method for accessing the exception cache | |
| 450 // These are the public access methods. | |
| 451 address nmethod::handler_for_exception_and_pc(Handle exception, address pc) { | |
| 452 // We never grab a lock to read the exception cache, so we may | |
| 453 // have false negatives. This is okay, as it can only happen during | |
| 454 // the first few exception lookups for a given nmethod. | |
| 455 ExceptionCache* ec = exception_cache(); | |
| 456 while (ec != NULL) { | |
| 457 address ret_val; | |
| 458 if ((ret_val = ec->match(exception,pc)) != NULL) { | |
| 459 return ret_val; | |
| 460 } | |
| 461 ec = ec->next(); | |
| 462 } | |
| 463 return NULL; | |
| 464 } | |
| 465 | |
| 466 | |
| 467 void nmethod::add_handler_for_exception_and_pc(Handle exception, address pc, address handler) { | |
| 468 // There are potential race conditions during exception cache updates, so we | |
| 469 // must own the ExceptionCache_lock before doing ANY modifications. Because | |
| 605 | 470 // we don't lock during reads, it is possible to have several threads attempt |
| 0 | 471 // to update the cache with the same data. We need to check for already inserted |
| 472 // copies of the current data before adding it. | |
| 473 | |
| 474 MutexLocker ml(ExceptionCache_lock); | |
| 475 ExceptionCache* target_entry = exception_cache_entry_for_exception(exception); | |
| 476 | |
| 477 if (target_entry == NULL || !target_entry->add_address_and_handler(pc,handler)) { | |
| 478 target_entry = new ExceptionCache(exception,pc,handler); | |
| 479 add_exception_cache_entry(target_entry); | |
| 480 } | |
| 481 } | |
| 482 | |
| 483 | |
| 484 //-------------end of code for ExceptionCache-------------- | |
| 485 | |
| 486 | |
| 487 int nmethod::total_size() const { | |
| 488 return | |
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489 consts_size() + |
| 1748 | 490 insts_size() + |
| 0 | 491 stub_size() + |
| 492 scopes_data_size() + | |
| 493 scopes_pcs_size() + | |
| 494 handler_table_size() + | |
| 495 nul_chk_table_size(); | |
| 496 } | |
| 497 | |
| 498 const char* nmethod::compile_kind() const { | |
| 499 if (is_osr_method()) return "osr"; | |
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500 if (method() != NULL && is_native_method()) return "c2n"; |
| 0 | 501 return NULL; |
| 502 } | |
| 503 | |
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504 // Fill in default values for various flag fields |
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505 void nmethod::init_defaults() { |
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506 _state = alive; |
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507 _marked_for_reclamation = 0; |
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508 _has_flushed_dependencies = 0; |
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509 _has_unsafe_access = 0; |
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510 _has_method_handle_invokes = 0; |
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511 _lazy_critical_native = 0; |
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512 _has_wide_vectors = 0; |
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513 _marked_for_deoptimization = 0; |
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514 _lock_count = 0; |
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515 _stack_traversal_mark = 0; |
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516 _unload_reported = false; // jvmti state |
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517 |
| 1726 | 518 #ifdef ASSERT |
| 519 _oops_are_stale = false; | |
| 520 #endif | |
| 521 | |
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522 _oops_do_mark_link = NULL; |
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523 _jmethod_id = NULL; |
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524 _osr_link = NULL; |
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525 _scavenge_root_link = NULL; |
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526 _scavenge_root_state = 0; |
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527 _compiler = NULL; |
| 9707 | 528 #ifdef GRAAL |
| 529 _graal_installed_code = NULL; | |
| 530 _triggered_deoptimizations = NULL; | |
| 531 #endif | |
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532 #ifdef HAVE_DTRACE_H |
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533 _trap_offset = 0; |
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534 #endif // def HAVE_DTRACE_H |
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535 } |
| 0 | 536 |
| 537 nmethod* nmethod::new_native_nmethod(methodHandle method, | |
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538 int compile_id, |
| 0 | 539 CodeBuffer *code_buffer, |
| 540 int vep_offset, | |
| 541 int frame_complete, | |
| 542 int frame_size, | |
| 543 ByteSize basic_lock_owner_sp_offset, | |
| 544 ByteSize basic_lock_sp_offset, | |
| 545 OopMapSet* oop_maps) { | |
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546 code_buffer->finalize_oop_references(method); |
| 0 | 547 // create nmethod |
| 548 nmethod* nm = NULL; | |
| 549 { | |
| 550 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
| 551 int native_nmethod_size = allocation_size(code_buffer, sizeof(nmethod)); | |
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552 CodeOffsets offsets; |
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553 offsets.set_value(CodeOffsets::Verified_Entry, vep_offset); |
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554 offsets.set_value(CodeOffsets::Frame_Complete, frame_complete); |
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555 nm = new (native_nmethod_size) nmethod(method(), native_nmethod_size, |
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556 compile_id, &offsets, |
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557 code_buffer, frame_size, |
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558 basic_lock_owner_sp_offset, |
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559 basic_lock_sp_offset, oop_maps); |
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560 if (nm != NULL) native_nmethod_stats.note_native_nmethod(nm); |
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561 if (PrintAssembly && nm != NULL) { |
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562 Disassembler::decode(nm); |
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563 } |
| 0 | 564 } |
| 565 // verify nmethod | |
| 566 debug_only(if (nm) nm->verify();) // might block | |
| 567 | |
| 568 if (nm != NULL) { | |
| 569 nm->log_new_nmethod(); | |
| 570 } | |
| 571 | |
| 572 return nm; | |
| 573 } | |
| 574 | |
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575 #ifdef HAVE_DTRACE_H |
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576 nmethod* nmethod::new_dtrace_nmethod(methodHandle method, |
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577 CodeBuffer *code_buffer, |
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578 int vep_offset, |
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579 int trap_offset, |
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580 int frame_complete, |
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581 int frame_size) { |
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582 code_buffer->finalize_oop_references(method); |
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583 // create nmethod |
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584 nmethod* nm = NULL; |
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585 { |
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586 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
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587 int nmethod_size = allocation_size(code_buffer, sizeof(nmethod)); |
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588 CodeOffsets offsets; |
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589 offsets.set_value(CodeOffsets::Verified_Entry, vep_offset); |
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590 offsets.set_value(CodeOffsets::Dtrace_trap, trap_offset); |
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591 offsets.set_value(CodeOffsets::Frame_Complete, frame_complete); |
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592 |
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593 nm = new (nmethod_size) nmethod(method(), nmethod_size, |
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594 &offsets, code_buffer, frame_size); |
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595 |
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596 if (nm != NULL) note_java_nmethod(nm); |
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597 if (PrintAssembly && nm != NULL) { |
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598 Disassembler::decode(nm); |
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599 } |
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600 } |
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601 // verify nmethod |
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602 debug_only(if (nm) nm->verify();) // might block |
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603 |
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604 if (nm != NULL) { |
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605 nm->log_new_nmethod(); |
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606 } |
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607 |
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608 return nm; |
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609 } |
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610 |
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611 #endif // def HAVE_DTRACE_H |
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612 |
| 0 | 613 nmethod* nmethod::new_nmethod(methodHandle method, |
| 614 int compile_id, | |
| 615 int entry_bci, | |
| 616 CodeOffsets* offsets, | |
| 617 int orig_pc_offset, | |
| 618 DebugInformationRecorder* debug_info, | |
| 619 Dependencies* dependencies, | |
| 620 CodeBuffer* code_buffer, int frame_size, | |
| 621 OopMapSet* oop_maps, | |
| 622 ExceptionHandlerTable* handler_table, | |
| 623 ImplicitExceptionTable* nul_chk_table, | |
| 624 AbstractCompiler* compiler, | |
| 9707 | 625 int comp_level, |
| 626 GrowableArray<jlong>* leaf_graph_ids | |
| 627 #ifdef GRAAL | |
| 628 , Handle installed_code, | |
| 629 Handle triggered_deoptimizations | |
| 630 #endif | |
| 0 | 631 ) |
| 632 { | |
| 633 assert(debug_info->oop_recorder() == code_buffer->oop_recorder(), "shared OR"); | |
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634 code_buffer->finalize_oop_references(method); |
| 9707 | 635 int leaf_graph_ids_size = leaf_graph_ids == NULL ? 0 : round_to(sizeof(jlong) * leaf_graph_ids->length(), oopSize); |
| 0 | 636 // create nmethod |
| 637 nmethod* nm = NULL; | |
| 638 { MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
| 639 int nmethod_size = | |
| 640 allocation_size(code_buffer, sizeof(nmethod)) | |
| 641 + adjust_pcs_size(debug_info->pcs_size()) | |
| 642 + round_to(dependencies->size_in_bytes() , oopSize) | |
| 643 + round_to(handler_table->size_in_bytes(), oopSize) | |
| 644 + round_to(nul_chk_table->size_in_bytes(), oopSize) | |
| 9707 | 645 + round_to(debug_info->data_size() , oopSize) |
| 8883 | 646 + leaf_graph_ids_size; |
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647 nm = new (nmethod_size) |
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648 nmethod(method(), nmethod_size, compile_id, entry_bci, offsets, |
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649 orig_pc_offset, debug_info, dependencies, code_buffer, frame_size, |
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650 oop_maps, |
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651 handler_table, |
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652 nul_chk_table, |
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653 compiler, |
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654 comp_level, |
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655 leaf_graph_ids |
| 9707 | 656 #ifdef GRAAL |
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657 , installed_code, |
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658 triggered_deoptimizations |
| 9707 | 659 #endif |
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660 ); |
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661 |
| 0 | 662 if (nm != NULL) { |
| 663 // To make dependency checking during class loading fast, record | |
| 664 // the nmethod dependencies in the classes it is dependent on. | |
| 665 // This allows the dependency checking code to simply walk the | |
| 666 // class hierarchy above the loaded class, checking only nmethods | |
| 667 // which are dependent on those classes. The slow way is to | |
| 668 // check every nmethod for dependencies which makes it linear in | |
| 669 // the number of methods compiled. For applications with a lot | |
| 670 // classes the slow way is too slow. | |
| 671 for (Dependencies::DepStream deps(nm); deps.next(); ) { | |
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672 Klass* klass = deps.context_type(); |
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673 if (klass == NULL) { |
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674 continue; // ignore things like evol_method |
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675 } |
| 0 | 676 |
| 677 // record this nmethod as dependent on this klass | |
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678 InstanceKlass::cast(klass)->add_dependent_nmethod(nm); |
| 0 | 679 } |
| 680 } | |
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681 if (nm != NULL) note_java_nmethod(nm); |
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682 if (PrintAssembly && nm != NULL) { |
| 0 | 683 Disassembler::decode(nm); |
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684 } |
| 0 | 685 } |
| 686 | |
| 687 // verify nmethod | |
| 688 debug_only(if (nm) nm->verify();) // might block | |
| 689 | |
| 690 if (nm != NULL) { | |
| 691 nm->log_new_nmethod(); | |
| 692 } | |
| 693 | |
| 694 // done | |
| 695 return nm; | |
| 696 } | |
| 697 | |
| 698 | |
| 699 // For native wrappers | |
| 700 nmethod::nmethod( | |
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701 Method* method, |
| 0 | 702 int nmethod_size, |
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703 int compile_id, |
| 0 | 704 CodeOffsets* offsets, |
| 705 CodeBuffer* code_buffer, | |
| 706 int frame_size, | |
| 707 ByteSize basic_lock_owner_sp_offset, | |
| 708 ByteSize basic_lock_sp_offset, | |
| 709 OopMapSet* oop_maps ) | |
| 710 : CodeBlob("native nmethod", code_buffer, sizeof(nmethod), | |
| 711 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, oop_maps), | |
| 2019 | 712 _native_receiver_sp_offset(basic_lock_owner_sp_offset), |
| 713 _native_basic_lock_sp_offset(basic_lock_sp_offset) | |
| 0 | 714 { |
| 715 { | |
| 716 debug_only(No_Safepoint_Verifier nsv;) | |
| 717 assert_locked_or_safepoint(CodeCache_lock); | |
| 718 | |
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719 init_defaults(); |
| 0 | 720 _method = method; |
| 721 _entry_bci = InvocationEntryBci; | |
| 722 // We have no exception handler or deopt handler make the | |
| 723 // values something that will never match a pc like the nmethod vtable entry | |
| 724 _exception_offset = 0; | |
| 725 _deoptimize_offset = 0; | |
| 1204 | 726 _deoptimize_mh_offset = 0; |
| 0 | 727 _orig_pc_offset = 0; |
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728 |
| 1748 | 729 _consts_offset = data_offset(); |
| 0 | 730 _stub_offset = data_offset(); |
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731 _oops_offset = data_offset(); |
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732 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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733 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
| 0 | 734 _scopes_pcs_offset = _scopes_data_offset; |
| 735 _dependencies_offset = _scopes_pcs_offset; | |
| 736 _handler_table_offset = _dependencies_offset; | |
| 737 _nul_chk_table_offset = _handler_table_offset; | |
| 9707 | 738 _leaf_graph_ids_offset = _nul_chk_table_offset; |
| 739 _nmethod_end_offset = _leaf_graph_ids_offset; | |
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740 _compile_id = compile_id; |
| 0 | 741 _comp_level = CompLevel_none; |
| 1748 | 742 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
| 743 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
| 0 | 744 _osr_entry_point = NULL; |
| 745 _exception_cache = NULL; | |
| 746 _pc_desc_cache.reset_to(NULL); | |
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747 _hotness_counter = NMethodSweeper::hotness_counter_reset_val(); |
| 0 | 748 |
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749 code_buffer->copy_values_to(this); |
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750 if (ScavengeRootsInCode && detect_scavenge_root_oops()) { |
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751 CodeCache::add_scavenge_root_nmethod(this); |
| 12080 | 752 Universe::heap()->register_nmethod(this); |
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753 } |
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754 debug_only(verify_scavenge_root_oops()); |
| 0 | 755 CodeCache::commit(this); |
| 756 } | |
| 757 | |
| 758 if (PrintNativeNMethods || PrintDebugInfo || PrintRelocations || PrintDependencies) { | |
| 759 ttyLocker ttyl; // keep the following output all in one block | |
| 760 // This output goes directly to the tty, not the compiler log. | |
| 761 // To enable tools to match it up with the compilation activity, | |
| 762 // be sure to tag this tty output with the compile ID. | |
| 763 if (xtty != NULL) { | |
| 764 xtty->begin_head("print_native_nmethod"); | |
| 765 xtty->method(_method); | |
| 766 xtty->stamp(); | |
| 767 xtty->end_head(" address='" INTPTR_FORMAT "'", (intptr_t) this); | |
| 768 } | |
| 769 // print the header part first | |
| 770 print(); | |
| 771 // then print the requested information | |
| 772 if (PrintNativeNMethods) { | |
| 773 print_code(); | |
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774 if (oop_maps != NULL) { |
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775 oop_maps->print(); |
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776 } |
| 0 | 777 } |
| 778 if (PrintRelocations) { | |
| 779 print_relocations(); | |
| 780 } | |
| 781 if (xtty != NULL) { | |
| 782 xtty->tail("print_native_nmethod"); | |
| 783 } | |
| 784 } | |
| 785 } | |
| 786 | |
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787 // For dtrace wrappers |
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788 #ifdef HAVE_DTRACE_H |
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789 nmethod::nmethod( |
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790 Method* method, |
|
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791 int nmethod_size, |
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792 CodeOffsets* offsets, |
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793 CodeBuffer* code_buffer, |
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794 int frame_size) |
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795 : CodeBlob("dtrace nmethod", code_buffer, sizeof(nmethod), |
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796 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, NULL), |
| 2019 | 797 _native_receiver_sp_offset(in_ByteSize(-1)), |
| 798 _native_basic_lock_sp_offset(in_ByteSize(-1)) | |
|
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799 { |
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800 { |
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801 debug_only(No_Safepoint_Verifier nsv;) |
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802 assert_locked_or_safepoint(CodeCache_lock); |
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803 |
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804 init_defaults(); |
|
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805 _method = method; |
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806 _entry_bci = InvocationEntryBci; |
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807 // We have no exception handler or deopt handler make the |
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808 // values something that will never match a pc like the nmethod vtable entry |
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809 _exception_offset = 0; |
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810 _deoptimize_offset = 0; |
| 1204 | 811 _deoptimize_mh_offset = 0; |
|
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812 _unwind_handler_offset = -1; |
|
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813 _trap_offset = offsets->value(CodeOffsets::Dtrace_trap); |
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814 _orig_pc_offset = 0; |
| 1748 | 815 _consts_offset = data_offset(); |
|
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816 _stub_offset = data_offset(); |
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817 _oops_offset = data_offset(); |
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818 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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819 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
|
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820 _scopes_pcs_offset = _scopes_data_offset; |
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821 _dependencies_offset = _scopes_pcs_offset; |
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822 _handler_table_offset = _dependencies_offset; |
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823 _nul_chk_table_offset = _handler_table_offset; |
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824 _nmethod_end_offset = _nul_chk_table_offset; |
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825 _compile_id = 0; // default |
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826 _comp_level = CompLevel_none; |
| 1748 | 827 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
| 828 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
|
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829 _osr_entry_point = NULL; |
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830 _exception_cache = NULL; |
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831 _pc_desc_cache.reset_to(NULL); |
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832 _hotness_counter = NMethodSweeper::hotness_counter_reset_val(); |
|
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833 |
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834 code_buffer->copy_values_to(this); |
|
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835 debug_only(verify_scavenge_root_oops()); |
|
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836 CodeCache::commit(this); |
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837 } |
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838 |
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839 if (PrintNMethods || PrintDebugInfo || PrintRelocations || PrintDependencies) { |
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840 ttyLocker ttyl; // keep the following output all in one block |
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841 // This output goes directly to the tty, not the compiler log. |
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842 // To enable tools to match it up with the compilation activity, |
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843 // be sure to tag this tty output with the compile ID. |
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844 if (xtty != NULL) { |
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845 xtty->begin_head("print_dtrace_nmethod"); |
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846 xtty->method(_method); |
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847 xtty->stamp(); |
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848 xtty->end_head(" address='" INTPTR_FORMAT "'", (intptr_t) this); |
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849 } |
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850 // print the header part first |
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851 print(); |
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852 // then print the requested information |
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853 if (PrintNMethods) { |
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854 print_code(); |
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855 } |
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856 if (PrintRelocations) { |
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857 print_relocations(); |
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858 } |
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859 if (xtty != NULL) { |
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860 xtty->tail("print_dtrace_nmethod"); |
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861 } |
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862 } |
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863 } |
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864 #endif // def HAVE_DTRACE_H |
| 0 | 865 |
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866 void* nmethod::operator new(size_t size, int nmethod_size) throw() { |
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867 // Not critical, may return null if there is too little continuous memory |
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868 return CodeCache::allocate(nmethod_size); |
| 0 | 869 } |
| 870 | |
| 871 nmethod::nmethod( | |
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872 Method* method, |
| 0 | 873 int nmethod_size, |
| 874 int compile_id, | |
| 875 int entry_bci, | |
| 876 CodeOffsets* offsets, | |
| 877 int orig_pc_offset, | |
| 878 DebugInformationRecorder* debug_info, | |
| 879 Dependencies* dependencies, | |
| 880 CodeBuffer *code_buffer, | |
| 881 int frame_size, | |
| 882 OopMapSet* oop_maps, | |
| 883 ExceptionHandlerTable* handler_table, | |
| 884 ImplicitExceptionTable* nul_chk_table, | |
| 885 AbstractCompiler* compiler, | |
| 9707 | 886 int comp_level, |
| 887 GrowableArray<jlong>* leaf_graph_ids | |
| 888 #ifdef GRAAL | |
| 889 , Handle installed_code, | |
| 890 Handle triggered_deoptimizations | |
| 891 #endif | |
| 0 | 892 ) |
| 893 : CodeBlob("nmethod", code_buffer, sizeof(nmethod), | |
| 894 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, oop_maps), | |
| 2019 | 895 _native_receiver_sp_offset(in_ByteSize(-1)), |
| 896 _native_basic_lock_sp_offset(in_ByteSize(-1)) | |
| 0 | 897 { |
| 898 assert(debug_info->oop_recorder() == code_buffer->oop_recorder(), "shared OR"); | |
| 899 { | |
| 900 debug_only(No_Safepoint_Verifier nsv;) | |
| 901 assert_locked_or_safepoint(CodeCache_lock); | |
| 902 | |
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903 init_defaults(); |
| 0 | 904 _method = method; |
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905 _entry_bci = entry_bci; |
| 0 | 906 _compile_id = compile_id; |
| 907 _comp_level = comp_level; | |
| 908 _compiler = compiler; | |
| 909 _orig_pc_offset = orig_pc_offset; | |
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910 _hotness_counter = NMethodSweeper::hotness_counter_reset_val(); |
| 1748 | 911 |
| 912 // Section offsets | |
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913 _consts_offset = content_offset() + code_buffer->total_offset_of(code_buffer->consts()); |
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914 _stub_offset = content_offset() + code_buffer->total_offset_of(code_buffer->stubs()); |
| 0 | 915 |
| 9707 | 916 #ifdef GRAAL |
| 917 _graal_installed_code = installed_code(); | |
| 918 _triggered_deoptimizations = (typeArrayOop)triggered_deoptimizations(); | |
| 919 #endif | |
| 920 if (compiler->is_graal()) { | |
| 921 // Graal might not produce any stub sections | |
| 922 if (offsets->value(CodeOffsets::Exceptions) != -1) { | |
| 923 _exception_offset = code_offset() + offsets->value(CodeOffsets::Exceptions); | |
| 924 } else { | |
| 925 _exception_offset = -1; | |
| 926 } | |
| 927 if (offsets->value(CodeOffsets::Deopt) != -1) { | |
| 928 _deoptimize_offset = code_offset() + offsets->value(CodeOffsets::Deopt); | |
| 929 } else { | |
| 930 _deoptimize_offset = -1; | |
| 931 } | |
| 932 if (offsets->value(CodeOffsets::DeoptMH) != -1) { | |
| 933 _deoptimize_mh_offset = code_offset() + offsets->value(CodeOffsets::DeoptMH); | |
| 934 } else { | |
| 935 _deoptimize_mh_offset = -1; | |
| 936 } | |
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937 } else { |
| 9707 | 938 // Exception handler and deopt handler are in the stub section |
| 939 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must be set"); | |
| 940 assert(offsets->value(CodeOffsets::Deopt ) != -1, "must be set"); | |
| 941 | |
| 942 _exception_offset = _stub_offset + offsets->value(CodeOffsets::Exceptions); | |
| 943 _deoptimize_offset = _stub_offset + offsets->value(CodeOffsets::Deopt); | |
| 944 if (offsets->value(CodeOffsets::DeoptMH) != -1) { | |
| 945 _deoptimize_mh_offset = _stub_offset + offsets->value(CodeOffsets::DeoptMH); | |
| 946 } else { | |
| 947 _deoptimize_mh_offset = -1; | |
| 948 } | |
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949 } |
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950 if (offsets->value(CodeOffsets::UnwindHandler) != -1) { |
| 1748 | 951 _unwind_handler_offset = code_offset() + offsets->value(CodeOffsets::UnwindHandler); |
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952 } else { |
| 1748 | 953 _unwind_handler_offset = -1; |
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954 } |
| 1748 | 955 |
| 9707 | 956 int leaf_graph_ids_size = leaf_graph_ids == NULL ? 0 : round_to(sizeof(jlong) * leaf_graph_ids->length(), oopSize); |
| 957 | |
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958 _oops_offset = data_offset(); |
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959 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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960 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
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961 |
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962 _scopes_pcs_offset = _scopes_data_offset + round_to(debug_info->data_size (), oopSize); |
| 0 | 963 _dependencies_offset = _scopes_pcs_offset + adjust_pcs_size(debug_info->pcs_size()); |
| 964 _handler_table_offset = _dependencies_offset + round_to(dependencies->size_in_bytes (), oopSize); | |
| 965 _nul_chk_table_offset = _handler_table_offset + round_to(handler_table->size_in_bytes(), oopSize); | |
| 9707 | 966 _leaf_graph_ids_offset = _nul_chk_table_offset + round_to(nul_chk_table->size_in_bytes(), oopSize); |
| 967 _nmethod_end_offset = _leaf_graph_ids_offset + leaf_graph_ids_size; | |
| 0 | 968 |
| 1748 | 969 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
| 970 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
| 971 _osr_entry_point = code_begin() + offsets->value(CodeOffsets::OSR_Entry); | |
| 0 | 972 _exception_cache = NULL; |
| 973 _pc_desc_cache.reset_to(scopes_pcs_begin()); | |
| 974 | |
| 975 // Copy contents of ScopeDescRecorder to nmethod | |
|
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976 code_buffer->copy_values_to(this); |
| 0 | 977 debug_info->copy_to(this); |
| 978 dependencies->copy_to(this); | |
|
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979 if (ScavengeRootsInCode && detect_scavenge_root_oops()) { |
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980 CodeCache::add_scavenge_root_nmethod(this); |
| 12080 | 981 Universe::heap()->register_nmethod(this); |
|
989
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982 } |
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983 debug_only(verify_scavenge_root_oops()); |
| 0 | 984 |
| 985 CodeCache::commit(this); | |
| 986 | |
| 987 // Copy contents of ExceptionHandlerTable to nmethod | |
| 988 handler_table->copy_to(this); | |
| 989 nul_chk_table->copy_to(this); | |
| 990 | |
| 9707 | 991 if (leaf_graph_ids != NULL && leaf_graph_ids_size > 0) { |
| 992 memcpy(leaf_graph_ids_begin(), leaf_graph_ids->adr_at(0), leaf_graph_ids_size); | |
| 993 } | |
| 994 | |
| 0 | 995 // we use the information of entry points to find out if a method is |
| 996 // static or non static | |
|
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997 assert(compiler->is_c2() || compiler->is_graal() || |
| 0 | 998 _method->is_static() == (entry_point() == _verified_entry_point), |
| 999 " entry points must be same for static methods and vice versa"); | |
| 1000 } | |
| 1001 | |
|
100
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1002 bool printnmethods = PrintNMethods |
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1003 || CompilerOracle::should_print(_method) |
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1004 || CompilerOracle::has_option_string(_method, "PrintNMethods"); |
| 0 | 1005 if (printnmethods || PrintDebugInfo || PrintRelocations || PrintDependencies || PrintExceptionHandlers) { |
| 1006 print_nmethod(printnmethods); | |
| 1007 } | |
| 1008 } | |
| 1009 | |
| 1010 | |
| 1011 // Print a short set of xml attributes to identify this nmethod. The | |
| 1012 // output should be embedded in some other element. | |
| 1013 void nmethod::log_identity(xmlStream* log) const { | |
| 1014 log->print(" compile_id='%d'", compile_id()); | |
| 1015 const char* nm_kind = compile_kind(); | |
| 1016 if (nm_kind != NULL) log->print(" compile_kind='%s'", nm_kind); | |
| 1017 if (compiler() != NULL) { | |
| 1018 log->print(" compiler='%s'", compiler()->name()); | |
| 1019 } | |
| 1783 | 1020 if (TieredCompilation) { |
| 1021 log->print(" level='%d'", comp_level()); | |
| 1022 } | |
| 0 | 1023 } |
| 1024 | |
| 1025 | |
| 1026 #define LOG_OFFSET(log, name) \ | |
| 1027 if ((intptr_t)name##_end() - (intptr_t)name##_begin()) \ | |
| 1028 log->print(" " XSTR(name) "_offset='%d'" , \ | |
| 1029 (intptr_t)name##_begin() - (intptr_t)this) | |
| 1030 | |
| 1031 | |
| 1032 void nmethod::log_new_nmethod() const { | |
| 1033 if (LogCompilation && xtty != NULL) { | |
| 1034 ttyLocker ttyl; | |
| 1035 HandleMark hm; | |
| 1036 xtty->begin_elem("nmethod"); | |
| 1037 log_identity(xtty); | |
| 1748 | 1038 xtty->print(" entry='" INTPTR_FORMAT "' size='%d'", code_begin(), size()); |
| 0 | 1039 xtty->print(" address='" INTPTR_FORMAT "'", (intptr_t) this); |
| 1040 | |
| 1041 LOG_OFFSET(xtty, relocation); | |
|
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1042 LOG_OFFSET(xtty, consts); |
| 1748 | 1043 LOG_OFFSET(xtty, insts); |
| 0 | 1044 LOG_OFFSET(xtty, stub); |
| 1045 LOG_OFFSET(xtty, scopes_data); | |
| 1046 LOG_OFFSET(xtty, scopes_pcs); | |
| 1047 LOG_OFFSET(xtty, dependencies); | |
| 1048 LOG_OFFSET(xtty, handler_table); | |
| 1049 LOG_OFFSET(xtty, nul_chk_table); | |
| 1050 LOG_OFFSET(xtty, oops); | |
| 1051 | |
| 1052 xtty->method(method()); | |
| 1053 xtty->stamp(); | |
| 1054 xtty->end_elem(); | |
| 1055 } | |
| 1056 } | |
| 1057 | |
| 1058 #undef LOG_OFFSET | |
| 1059 | |
| 1060 | |
| 1061 // Print out more verbose output usually for a newly created nmethod. | |
|
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1062 void nmethod::print_on(outputStream* st, const char* msg) const { |
| 0 | 1063 if (st != NULL) { |
| 1064 ttyLocker ttyl; | |
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1065 if (WizardMode) { |
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1066 CompileTask::print_compilation(st, this, msg, /*short_form:*/ true); |
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1067 st->print_cr(" (" INTPTR_FORMAT ")", this); |
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1068 } else { |
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1069 CompileTask::print_compilation(st, this, msg, /*short_form:*/ false); |
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1070 } |
| 0 | 1071 } |
| 1072 } | |
| 1073 | |
| 1074 | |
| 1075 void nmethod::print_nmethod(bool printmethod) { | |
| 1076 ttyLocker ttyl; // keep the following output all in one block | |
| 1077 if (xtty != NULL) { | |
| 1078 xtty->begin_head("print_nmethod"); | |
| 1079 xtty->stamp(); | |
| 1080 xtty->end_head(); | |
| 1081 } | |
| 1082 // print the header part first | |
| 1083 print(); | |
| 1084 // then print the requested information | |
| 1085 if (printmethod) { | |
| 1086 print_code(); | |
| 1087 print_pcs(); | |
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1088 if (oop_maps()) { |
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1089 oop_maps()->print(); |
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1090 } |
| 0 | 1091 } |
| 1092 if (PrintDebugInfo) { | |
| 1093 print_scopes(); | |
| 1094 } | |
| 1095 if (PrintRelocations) { | |
| 1096 print_relocations(); | |
| 1097 } | |
| 1098 if (PrintDependencies) { | |
| 1099 print_dependencies(); | |
| 1100 } | |
| 1101 if (PrintExceptionHandlers) { | |
| 1102 print_handler_table(); | |
| 1103 print_nul_chk_table(); | |
| 1104 } | |
| 1105 if (xtty != NULL) { | |
| 1106 xtty->tail("print_nmethod"); | |
| 1107 } | |
| 1108 } | |
| 1109 | |
| 1110 | |
|
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1111 // Promote one word from an assembly-time handle to a live embedded oop. |
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1112 inline void nmethod::initialize_immediate_oop(oop* dest, jobject handle) { |
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1113 if (handle == NULL || |
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1114 // As a special case, IC oops are initialized to 1 or -1. |
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1115 handle == (jobject) Universe::non_oop_word()) { |
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1116 (*dest) = (oop) handle; |
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1117 } else { |
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1118 (*dest) = JNIHandles::resolve_non_null(handle); |
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1119 } |
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1120 } |
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1121 |
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1122 |
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1123 // Have to have the same name because it's called by a template |
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1124 void nmethod::copy_values(GrowableArray<jobject>* array) { |
|
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1125 int length = array->length(); |
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1126 assert((address)(oops_begin() + length) <= (address)oops_end(), "oops big enough"); |
|
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1127 oop* dest = oops_begin(); |
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1128 for (int index = 0 ; index < length; index++) { |
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1129 initialize_immediate_oop(&dest[index], array->at(index)); |
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1130 } |
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1131 |
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1132 // Now we can fix up all the oops in the code. We need to do this |
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1133 // in the code because the assembler uses jobjects as placeholders. |
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1134 // The code and relocations have already been initialized by the |
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1135 // CodeBlob constructor, so it is valid even at this early point to |
|
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1136 // iterate over relocations and patch the code. |
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1137 fix_oop_relocations(NULL, NULL, /*initialize_immediates=*/ true); |
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1138 } |
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1139 |
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1140 void nmethod::copy_values(GrowableArray<Metadata*>* array) { |
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1141 int length = array->length(); |
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1142 assert((address)(metadata_begin() + length) <= (address)metadata_end(), "big enough"); |
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1143 Metadata** dest = metadata_begin(); |
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1144 for (int index = 0 ; index < length; index++) { |
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1145 dest[index] = array->at(index); |
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1146 } |
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1147 } |
|
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1148 |
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1149 bool nmethod::is_at_poll_return(address pc) { |
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1150 RelocIterator iter(this, pc, pc+1); |
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1151 while (iter.next()) { |
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1152 if (iter.type() == relocInfo::poll_return_type) |
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1153 return true; |
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1154 } |
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1155 return false; |
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1156 } |
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1157 |
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1158 |
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1159 bool nmethod::is_at_poll_or_poll_return(address pc) { |
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1160 RelocIterator iter(this, pc, pc+1); |
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1161 while (iter.next()) { |
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1162 relocInfo::relocType t = iter.type(); |
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1163 if (t == relocInfo::poll_return_type || t == relocInfo::poll_type) |
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1164 return true; |
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1165 } |
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1166 return false; |
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1167 } |
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1168 |
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1169 |
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1170 void nmethod::fix_oop_relocations(address begin, address end, bool initialize_immediates) { |
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1171 // re-patch all oop-bearing instructions, just in case some oops moved |
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1172 RelocIterator iter(this, begin, end); |
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1173 while (iter.next()) { |
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1174 if (iter.type() == relocInfo::oop_type) { |
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1175 oop_Relocation* reloc = iter.oop_reloc(); |
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1176 if (initialize_immediates && reloc->oop_is_immediate()) { |
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1177 oop* dest = reloc->oop_addr(); |
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1178 initialize_immediate_oop(dest, (jobject) *dest); |
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twisti
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|
1179 } |
|
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|
1180 // Refresh the oop-related bits of this instruction. |
|
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1181 reloc->fix_oop_relocation(); |
|
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1182 } else if (iter.type() == relocInfo::metadata_type) { |
|
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1183 metadata_Relocation* reloc = iter.metadata_reloc(); |
|
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1184 reloc->fix_metadata_relocation(); |
|
1563
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|
1185 } |
|
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|
1186 } |
|
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|
1187 } |
|
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1188 |
|
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|
1189 |
|
2375
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7028374: race in fix_oop_relocations for scavengeable nmethods
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changeset
|
1190 void nmethod::verify_oop_relocations() { |
|
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7028374: race in fix_oop_relocations for scavengeable nmethods
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1191 // Ensure sure that the code matches the current oop values |
|
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
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1192 RelocIterator iter(this, NULL, NULL); |
|
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
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|
1193 while (iter.next()) { |
|
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7028374: race in fix_oop_relocations for scavengeable nmethods
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changeset
|
1194 if (iter.type() == relocInfo::oop_type) { |
|
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
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changeset
|
1195 oop_Relocation* reloc = iter.oop_reloc(); |
|
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
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changeset
|
1196 if (!reloc->oop_is_immediate()) { |
|
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
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parents:
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changeset
|
1197 reloc->verify_oop_relocation(); |
|
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
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changeset
|
1198 } |
|
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|
1199 } |
|
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|
1200 } |
|
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|
1201 } |
|
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|
1202 |
|
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changeset
|
1203 |
| 0 | 1204 ScopeDesc* nmethod::scope_desc_at(address pc) { |
| 1205 PcDesc* pd = pc_desc_at(pc); | |
| 1206 guarantee(pd != NULL, "scope must be present"); | |
| 1207 return new ScopeDesc(this, pd->scope_decode_offset(), | |
| 9707 | 1208 pd->obj_decode_offset(), pd->should_reexecute(), pd->rethrow_exception(), |
|
1253
f70b0d9ab095
6910618: C2: Error: assert(d->is_oop(),"JVM_ArrayCopy: dst not an oop")
kvn
parents:
1250
diff
changeset
|
1209 pd->return_oop()); |
| 0 | 1210 } |
| 1211 | |
| 1212 | |
| 1213 void nmethod::clear_inline_caches() { | |
| 1214 assert(SafepointSynchronize::is_at_safepoint(), "cleaning of IC's only allowed at safepoint"); | |
| 1215 if (is_zombie()) { | |
| 1216 return; | |
| 1217 } | |
| 1218 | |
| 1219 RelocIterator iter(this); | |
| 1220 while (iter.next()) { | |
| 1221 iter.reloc()->clear_inline_cache(); | |
| 1222 } | |
| 1223 } | |
| 1224 | |
| 1225 | |
| 1226 void nmethod::cleanup_inline_caches() { | |
| 1227 | |
|
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bfe29ec02863
6950075: nmethod sweeper should operate concurrently
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parents:
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|
1228 assert_locked_or_safepoint(CompiledIC_lock); |
| 0 | 1229 |
| 1230 // If the method is not entrant or zombie then a JMP is plastered over the | |
| 1231 // first few bytes. If an oop in the old code was there, that oop | |
| 1232 // should not get GC'd. Skip the first few bytes of oops on | |
| 1233 // not-entrant methods. | |
| 1234 address low_boundary = verified_entry_point(); | |
| 1235 if (!is_in_use()) { | |
| 1236 low_boundary += NativeJump::instruction_size; | |
| 1237 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
| 1238 // This means that the low_boundary is going to be a little too high. | |
| 1239 // This shouldn't matter, since oops of non-entrant methods are never used. | |
| 1240 // In fact, why are we bothering to look at oops in a non-entrant method?? | |
| 1241 } | |
| 1242 | |
| 1243 // Find all calls in an nmethod, and clear the ones that points to zombie methods | |
| 1244 ResourceMark rm; | |
| 1245 RelocIterator iter(this, low_boundary); | |
| 1246 while(iter.next()) { | |
| 1247 switch(iter.type()) { | |
| 1248 case relocInfo::virtual_call_type: | |
| 1249 case relocInfo::opt_virtual_call_type: { | |
| 1250 CompiledIC *ic = CompiledIC_at(iter.reloc()); | |
| 1251 // Ok, to lookup references to zombies here | |
| 1252 CodeBlob *cb = CodeCache::find_blob_unsafe(ic->ic_destination()); | |
| 1253 if( cb != NULL && cb->is_nmethod() ) { | |
| 1254 nmethod* nm = (nmethod*)cb; | |
| 1255 // Clean inline caches pointing to both zombie and not_entrant methods | |
| 1202 | 1256 if (!nm->is_in_use() || (nm->method()->code() != nm)) ic->set_to_clean(); |
| 0 | 1257 } |
| 1258 break; | |
| 1259 } | |
| 1260 case relocInfo::static_call_type: { | |
| 1261 CompiledStaticCall *csc = compiledStaticCall_at(iter.reloc()); | |
| 1262 CodeBlob *cb = CodeCache::find_blob_unsafe(csc->destination()); | |
| 1263 if( cb != NULL && cb->is_nmethod() ) { | |
| 1264 nmethod* nm = (nmethod*)cb; | |
| 1265 // Clean inline caches pointing to both zombie and not_entrant methods | |
| 1202 | 1266 if (!nm->is_in_use() || (nm->method()->code() != nm)) csc->set_to_clean(); |
| 0 | 1267 } |
| 1268 break; | |
| 1269 } | |
| 1270 } | |
| 1271 } | |
| 1272 } | |
| 1273 | |
|
989
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6863023: need non-perm oops in code cache for JSR 292
jrose
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diff
changeset
|
1274 // This is a private interface with the sweeper. |
| 0 | 1275 void nmethod::mark_as_seen_on_stack() { |
|
12324
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anoll
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|
1276 assert(is_alive(), "Must be an alive method"); |
|
1644
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|
1277 // Set the traversal mark to ensure that the sweeper does 2 |
|
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|
1278 // cleaning passes before moving to zombie. |
| 0 | 1279 set_stack_traversal_mark(NMethodSweeper::traversal_count()); |
| 1280 } | |
| 1281 | |
|
2342
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7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
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changeset
|
1282 // Tell if a non-entrant method can be converted to a zombie (i.e., |
|
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
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changeset
|
1283 // there are no activations on the stack, not in use by the VM, |
|
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
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diff
changeset
|
1284 // and not in use by the ServiceThread) |
| 0 | 1285 bool nmethod::can_not_entrant_be_converted() { |
| 1286 assert(is_not_entrant(), "must be a non-entrant method"); | |
| 1287 | |
| 1288 // Since the nmethod sweeper only does partial sweep the sweeper's traversal | |
| 1289 // count can be greater than the stack traversal count before it hits the | |
| 1290 // nmethod for the second time. | |
|
2342
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7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
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changeset
|
1291 return stack_traversal_mark()+1 < NMethodSweeper::traversal_count() && |
|
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
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diff
changeset
|
1292 !is_locked_by_vm(); |
| 0 | 1293 } |
| 1294 | |
| 1295 void nmethod::inc_decompile_count() { | |
| 9707 | 1296 if (!is_compiled_by_c2() && !is_compiled_by_graal()) return; |
| 0 | 1297 // Could be gated by ProfileTraps, but do not bother... |
|
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1298 Method* m = method(); |
| 0 | 1299 if (m == NULL) return; |
|
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1300 MethodData* mdo = m->method_data(); |
| 0 | 1301 if (mdo == NULL) return; |
|
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
1302 // There is a benign race here. See comments in methodData.hpp. |
| 0 | 1303 mdo->inc_decompile_count(); |
| 1304 } | |
| 1305 | |
| 1306 void nmethod::make_unloaded(BoolObjectClosure* is_alive, oop cause) { | |
| 1307 | |
| 1308 post_compiled_method_unload(); | |
| 1309 | |
| 1310 // Since this nmethod is being unloaded, make sure that dependencies | |
| 1311 // recorded in instanceKlasses get flushed and pass non-NULL closure to | |
| 1312 // indicate that this work is being done during a GC. | |
| 1313 assert(Universe::heap()->is_gc_active(), "should only be called during gc"); | |
| 1314 assert(is_alive != NULL, "Should be non-NULL"); | |
| 1315 // A non-NULL is_alive closure indicates that this is being called during GC. | |
| 1316 flush_dependencies(is_alive); | |
| 1317 | |
| 1318 // Break cycle between nmethod & method | |
| 1319 if (TraceClassUnloading && WizardMode) { | |
| 1320 tty->print_cr("[Class unloading: Making nmethod " INTPTR_FORMAT | |
|
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
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changeset
|
1321 " unloadable], Method*(" INTPTR_FORMAT |
| 0 | 1322 "), cause(" INTPTR_FORMAT ")", |
| 1323 this, (address)_method, (address)cause); | |
|
989
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6863023: need non-perm oops in code cache for JSR 292
jrose
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changeset
|
1324 if (!Universe::heap()->is_gc_active()) |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
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changeset
|
1325 cause->klass()->print(); |
| 0 | 1326 } |
| 941 | 1327 // Unlink the osr method, so we do not look this up again |
| 1328 if (is_osr_method()) { | |
| 1329 invalidate_osr_method(); | |
| 1330 } | |
|
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
1331 // If _method is already NULL the Method* is about to be unloaded, |
| 0 | 1332 // so we don't have to break the cycle. Note that it is possible to |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1333 // have the Method* live here, in case we unload the nmethod because |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
1334 // it is pointing to some oop (other than the Method*) being unloaded. |
| 0 | 1335 if (_method != NULL) { |
|
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
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changeset
|
1336 // OSR methods point to the Method*, but the Method* does not |
| 0 | 1337 // point back! |
| 1338 if (_method->code() == this) { | |
| 1339 _method->clear_code(); // Break a cycle | |
| 1340 } | |
| 1341 _method = NULL; // Clear the method of this dead nmethod | |
| 1342 } | |
| 9707 | 1343 |
| 1344 #ifdef GRAAL | |
| 1345 // The method can only be unloaded after the pointer to the installed code | |
| 1346 // Java wrapper is no longer alive. Here we need to clear out this weak | |
| 1347 // reference to the dead object. | |
| 1348 if (_graal_installed_code != NULL) { | |
|
10560
0b1b5356b566
Fixed issues around execute compiled code stub. Made TraceDeoptimization a product flag.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
10475
diff
changeset
|
1349 HotSpotInstalledCode::set_codeBlob(_graal_installed_code, 0); |
| 9707 | 1350 _graal_installed_code = NULL; |
| 1351 } | |
| 1352 #endif | |
| 1353 | |
| 0 | 1354 // Make the class unloaded - i.e., change state and notify sweeper |
|
1538
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parents:
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diff
changeset
|
1355 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint"); |
| 0 | 1356 if (is_in_use()) { |
| 1357 // Transitioning directly from live to unloaded -- so | |
| 1358 // we need to force a cache clean-up; remember this | |
| 1359 // for later on. | |
| 1360 CodeCache::set_needs_cache_clean(true); | |
| 1361 } | |
|
1644
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changeset
|
1362 _state = unloaded; |
| 0 | 1363 |
|
1109
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
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diff
changeset
|
1364 // Log the unloading. |
|
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
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diff
changeset
|
1365 log_state_change(); |
|
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
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changeset
|
1366 |
|
6725
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coleenp
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changeset
|
1367 // The Method* is gone at this point |
| 0 | 1368 assert(_method == NULL, "Tautology"); |
| 1369 | |
|
989
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6863023: need non-perm oops in code cache for JSR 292
jrose
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changeset
|
1370 set_osr_link(NULL); |
|
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6863023: need non-perm oops in code cache for JSR 292
jrose
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changeset
|
1371 //set_scavenge_root_link(NULL); // done by prune_scavenge_root_nmethods |
|
12324
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anoll
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changeset
|
1372 NMethodSweeper::notify(); |
| 0 | 1373 } |
| 1374 | |
| 1375 void nmethod::invalidate_osr_method() { | |
| 1376 assert(_entry_bci != InvocationEntryBci, "wrong kind of nmethod"); | |
| 1377 // Remove from list of active nmethods | |
| 1378 if (method() != NULL) | |
|
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6806
diff
changeset
|
1379 method()->method_holder()->remove_osr_nmethod(this); |
| 0 | 1380 // Set entry as invalid |
| 1381 _entry_bci = InvalidOSREntryBci; | |
| 1382 } | |
| 1383 | |
|
1109
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
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diff
changeset
|
1384 void nmethod::log_state_change() const { |
| 0 | 1385 if (LogCompilation) { |
| 1386 if (xtty != NULL) { | |
| 1387 ttyLocker ttyl; // keep the following output all in one block | |
|
1644
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changeset
|
1388 if (_state == unloaded) { |
|
1109
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
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diff
changeset
|
1389 xtty->begin_elem("make_unloaded thread='" UINTX_FORMAT "'", |
|
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
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diff
changeset
|
1390 os::current_thread_id()); |
|
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
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diff
changeset
|
1391 } else { |
|
032260830071
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diff
changeset
|
1392 xtty->begin_elem("make_not_entrant thread='" UINTX_FORMAT "'%s", |
|
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
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changeset
|
1393 os::current_thread_id(), |
|
1644
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|
1394 (_state == zombie ? " zombie='1'" : "")); |
|
1109
032260830071
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changeset
|
1395 } |
| 0 | 1396 log_identity(xtty); |
| 1397 xtty->stamp(); | |
| 1398 xtty->end_elem(); | |
| 1399 } | |
| 1400 } | |
|
1644
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changeset
|
1401 if (PrintCompilation && _state != unloaded) { |
|
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2376
diff
changeset
|
1402 print_on(tty, _state == zombie ? "made zombie" : "made not entrant"); |
| 0 | 1403 } |
| 1404 } | |
| 1405 | |
| 1406 // Common functionality for both make_not_entrant and make_zombie | |
| 1141 | 1407 bool nmethod::make_not_entrant_or_zombie(unsigned int state) { |
| 0 | 1408 assert(state == zombie || state == not_entrant, "must be zombie or not_entrant"); |
|
2342
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dcubed
parents:
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changeset
|
1409 assert(!is_zombie(), "should not already be a zombie"); |
| 0 | 1410 |
|
1644
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changeset
|
1411 // Make sure neither the nmethod nor the method is flushed in case of a safepoint in code below. |
| 0 | 1412 nmethodLocker nml(this); |
|
1644
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changeset
|
1413 methodHandle the_method(method()); |
| 1726 | 1414 No_Safepoint_Verifier nsv; |
| 0 | 1415 |
| 12080 | 1416 // during patching, depending on the nmethod state we must notify the GC that |
| 1417 // code has been unloaded, unregistering it. We cannot do this right while | |
| 1418 // holding the Patching_lock because we need to use the CodeCache_lock. This | |
| 1419 // would be prone to deadlocks. | |
| 1420 // This flag is used to remember whether we need to later lock and unregister. | |
| 1421 bool nmethod_needs_unregister = false; | |
| 1422 | |
| 0 | 1423 { |
|
1109
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
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changeset
|
1424 // invalidate osr nmethod before acquiring the patching lock since |
|
032260830071
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parents:
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changeset
|
1425 // they both acquire leaf locks and we don't want a deadlock. |
|
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5057818: codecache full and compiler disabled in bigapps fastdebug run
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diff
changeset
|
1426 // This logic is equivalent to the logic below for patching the |
|
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
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diff
changeset
|
1427 // verified entry point of regular methods. |
|
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
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994
diff
changeset
|
1428 if (is_osr_method()) { |
|
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
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994
diff
changeset
|
1429 // this effectively makes the osr nmethod not entrant |
|
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
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parents:
994
diff
changeset
|
1430 invalidate_osr_method(); |
|
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
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994
diff
changeset
|
1431 } |
|
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
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diff
changeset
|
1432 |
| 0 | 1433 // Enter critical section. Does not block for safepoint. |
| 1434 MutexLockerEx pl(Patching_lock, Mutex::_no_safepoint_check_flag); | |
|
1109
032260830071
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diff
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|
1435 |
|
1644
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
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diff
changeset
|
1436 if (_state == state) { |
|
1109
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1437 // another thread already performed this transition so nothing |
|
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
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parents:
994
diff
changeset
|
1438 // to do, but return false to indicate this. |
|
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1439 return false; |
|
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
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parents:
994
diff
changeset
|
1440 } |
|
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
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994
diff
changeset
|
1441 |
| 0 | 1442 // The caller can be calling the method statically or through an inline |
| 1443 // cache call. | |
|
1109
032260830071
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parents:
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diff
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|
1444 if (!is_osr_method() && !is_not_entrant()) { |
| 9707 | 1445 address stub = SharedRuntime::get_handle_wrong_method_stub(); |
| 1446 NativeJump::patch_verified_entry(entry_point(), verified_entry_point(), stub); | |
| 0 | 1447 } |
| 1448 | |
|
1644
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
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diff
changeset
|
1449 if (is_in_use()) { |
|
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
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parents:
1616
diff
changeset
|
1450 // It's a true state change, so mark the method as decompiled. |
|
2a47bd84841f
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diff
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|
1451 // Do it only for transition from alive. |
|
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
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diff
changeset
|
1452 inc_decompile_count(); |
|
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
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diff
changeset
|
1453 } |
|
1206
87684f1a88b5
6614597: Performance variability in jvm2008 xml.validation
kvn
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1204
diff
changeset
|
1454 |
| 12080 | 1455 // If the state is becoming a zombie, signal to unregister the nmethod with |
| 1456 // the heap. | |
| 1457 // This nmethod may have already been unloaded during a full GC. | |
| 1458 if ((state == zombie) && !is_unloaded()) { | |
| 1459 nmethod_needs_unregister = true; | |
| 1460 } | |
| 1461 | |
|
12324
510fbd28919c
8020151: PSR:PERF Large performance regressions when code cache is filled
anoll
parents:
12175
diff
changeset
|
1462 // Must happen before state change. Otherwise we have a race condition in |
|
510fbd28919c
8020151: PSR:PERF Large performance regressions when code cache is filled
anoll
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12175
diff
changeset
|
1463 // nmethod::can_not_entrant_be_converted(). I.e., a method can immediately |
|
510fbd28919c
8020151: PSR:PERF Large performance regressions when code cache is filled
anoll
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12175
diff
changeset
|
1464 // transition its state from 'not_entrant' to 'zombie' without having to wait |
|
510fbd28919c
8020151: PSR:PERF Large performance regressions when code cache is filled
anoll
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diff
changeset
|
1465 // for stack scanning. |
|
510fbd28919c
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anoll
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diff
changeset
|
1466 if (state == not_entrant) { |
|
510fbd28919c
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diff
changeset
|
1467 mark_as_seen_on_stack(); |
|
510fbd28919c
8020151: PSR:PERF Large performance regressions when code cache is filled
anoll
parents:
12175
diff
changeset
|
1468 OrderAccess::storestore(); |
|
510fbd28919c
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anoll
parents:
12175
diff
changeset
|
1469 } |
|
510fbd28919c
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anoll
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diff
changeset
|
1470 |
| 0 | 1471 // Change state |
|
1644
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diff
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|
1472 _state = state; |
|
1109
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|
1473 |
|
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changeset
|
1474 // Log the transition once |
|
032260830071
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diff
changeset
|
1475 log_state_change(); |
|
032260830071
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994
diff
changeset
|
1476 |
|
1644
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parents:
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diff
changeset
|
1477 // Remove nmethod from method. |
|
2a47bd84841f
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parents:
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diff
changeset
|
1478 // We need to check if both the _code and _from_compiled_code_entry_point |
|
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
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diff
changeset
|
1479 // refer to this nmethod because there is a race in setting these two fields |
|
6725
da91efe96a93
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diff
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|
1480 // in Method* as seen in bugid 4947125. |
|
1644
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parents:
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diff
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|
1481 // If the vep() points to the zombie nmethod, the memory for the nmethod |
|
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diff
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|
1482 // could be flushed and the compiler and vtable stubs could still call |
|
2a47bd84841f
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diff
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|
1483 // through it. |
|
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diff
changeset
|
1484 if (method() != NULL && (method()->code() == this || |
|
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diff
changeset
|
1485 method()->from_compiled_entry() == verified_entry_point())) { |
|
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diff
changeset
|
1486 HandleMark hm; |
|
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diff
changeset
|
1487 method()->clear_code(); |
|
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diff
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|
1488 } |
| 0 | 1489 } // leave critical region under Patching_lock |
| 1490 | |
|
1538
bfe29ec02863
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1490
diff
changeset
|
1491 // When the nmethod becomes zombie it is no longer alive so the |
|
bfe29ec02863
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diff
changeset
|
1492 // dependencies must be flushed. nmethods in the not_entrant |
|
bfe29ec02863
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diff
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|
1493 // state will be flushed later when the transition to zombie |
|
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
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parents:
1490
diff
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|
1494 // happens or they get unloaded. |
|
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parents:
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diff
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|
1495 if (state == zombie) { |
| 1726 | 1496 { |
| 1497 // Flushing dependecies must be done before any possible | |
| 1498 // safepoint can sneak in, otherwise the oops used by the | |
| 1499 // dependency logic could have become stale. | |
| 1500 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
| 12080 | 1501 if (nmethod_needs_unregister) { |
| 1502 Universe::heap()->unregister_nmethod(this); | |
| 1503 } | |
| 1726 | 1504 flush_dependencies(NULL); |
| 1505 } | |
|
1644
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diff
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|
1506 |
|
2342
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dcubed
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diff
changeset
|
1507 // zombie only - if a JVMTI agent has enabled the CompiledMethodUnload |
|
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2321
diff
changeset
|
1508 // event and it hasn't already been reported for this nmethod then |
|
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2321
diff
changeset
|
1509 // report it now. The event may have been reported earilier if the GC |
|
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2321
diff
changeset
|
1510 // marked it for unloading). JvmtiDeferredEventQueue support means |
|
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
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diff
changeset
|
1511 // we no longer go to a safepoint here. |
|
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2321
diff
changeset
|
1512 post_compiled_method_unload(); |
| 1726 | 1513 |
| 1514 #ifdef ASSERT | |
| 1515 // It's no longer safe to access the oops section since zombie | |
| 1516 // nmethods aren't scanned for GC. | |
| 1517 _oops_are_stale = true; | |
| 1518 #endif | |
|
12161
e1fbb86b47e4
8016277: Crash in nmethod::is_compiled_by_c1() on x86
roland
parents:
12080
diff
changeset
|
1519 // the Method may be reclaimed by class unloading now that the |
|
e1fbb86b47e4
8016277: Crash in nmethod::is_compiled_by_c1() on x86
roland
parents:
12080
diff
changeset
|
1520 // nmethod is in zombie state |
|
e1fbb86b47e4
8016277: Crash in nmethod::is_compiled_by_c1() on x86
roland
parents:
12080
diff
changeset
|
1521 set_method(NULL); |
|
1538
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
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parents:
1490
diff
changeset
|
1522 } else { |
|
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
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parents:
1490
diff
changeset
|
1523 assert(state == not_entrant, "other cases may need to be handled differently"); |
|
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
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parents:
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diff
changeset
|
1524 } |
|
12414
98031e66de15
Fix unittests
Christos Kotselidis <christos.kotselidis@oracle.com>
parents:
12411
diff
changeset
|
1525 #ifdef GRAAL |
|
98031e66de15
Fix unittests
Christos Kotselidis <christos.kotselidis@oracle.com>
parents:
12411
diff
changeset
|
1526 if (_graal_installed_code != NULL) { |
|
98031e66de15
Fix unittests
Christos Kotselidis <christos.kotselidis@oracle.com>
parents:
12411
diff
changeset
|
1527 // Break the link between nmethod and HotSpotInstalledCode such that the nmethod can subsequently be flushed safely. |
|
98031e66de15
Fix unittests
Christos Kotselidis <christos.kotselidis@oracle.com>
parents:
12411
diff
changeset
|
1528 HotSpotInstalledCode::set_codeBlob(_graal_installed_code, 0); |
|
98031e66de15
Fix unittests
Christos Kotselidis <christos.kotselidis@oracle.com>
parents:
12411
diff
changeset
|
1529 } |
|
98031e66de15
Fix unittests
Christos Kotselidis <christos.kotselidis@oracle.com>
parents:
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diff
changeset
|
1530 #endif |
|
1538
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|
1531 |
| 0 | 1532 if (TraceCreateZombies) { |
| 9707 | 1533 ResourceMark m; |
| 1534 tty->print_cr("nmethod <" INTPTR_FORMAT "> %s code made %s", this, this->method()->name_and_sig_as_C_string(), (state == not_entrant) ? "not entrant" : "zombie"); | |
| 0 | 1535 } |
| 1536 | |
| 1537 // Make sweeper aware that there is a zombie method that needs to be removed | |
|
12324
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diff
changeset
|
1538 NMethodSweeper::notify(); |
| 0 | 1539 |
|
1109
032260830071
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changeset
|
1540 return true; |
| 0 | 1541 } |
| 1542 | |
| 1543 void nmethod::flush() { | |
| 1544 // Note that there are no valid oops in the nmethod anymore. | |
| 1545 assert(is_zombie() || (is_osr_method() && is_unloaded()), "must be a zombie method"); | |
| 1546 assert(is_marked_for_reclamation() || (is_osr_method() && is_unloaded()), "must be marked for reclamation"); | |
| 1547 | |
| 1548 assert (!is_locked_by_vm(), "locked methods shouldn't be flushed"); | |
|
1538
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
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parents:
1490
diff
changeset
|
1549 assert_locked_or_safepoint(CodeCache_lock); |
| 0 | 1550 |
| 1551 // completely deallocate this method | |
|
4872
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
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parents:
4006
diff
changeset
|
1552 Events::log(JavaThread::current(), "flushing nmethod " INTPTR_FORMAT, this); |
| 0 | 1553 if (PrintMethodFlushing) { |
| 1202 | 1554 tty->print_cr("*flushing nmethod %3d/" INTPTR_FORMAT ". Live blobs:" UINT32_FORMAT "/Free CodeCache:" SIZE_FORMAT "Kb", |
| 1555 _compile_id, this, CodeCache::nof_blobs(), CodeCache::unallocated_capacity()/1024); | |
| 0 | 1556 } |
| 1557 | |
| 1558 // We need to deallocate any ExceptionCache data. | |
| 1559 // Note that we do not need to grab the nmethod lock for this, it | |
| 1560 // better be thread safe if we're disposing of it! | |
| 1561 ExceptionCache* ec = exception_cache(); | |
| 1562 set_exception_cache(NULL); | |
| 1563 while(ec != NULL) { | |
| 1564 ExceptionCache* next = ec->next(); | |
| 1565 delete ec; | |
| 1566 ec = next; | |
| 1567 } | |
| 1568 | |
|
989
148e5441d916
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jrose
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diff
changeset
|
1569 if (on_scavenge_root_list()) { |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
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931
diff
changeset
|
1570 CodeCache::drop_scavenge_root_nmethod(this); |
|
148e5441d916
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diff
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|
1571 } |
|
148e5441d916
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|
1572 |
| 1692 | 1573 #ifdef SHARK |
|
1845
a222fcfba398
6990549: Zero and Shark fixes after 6978355 and 6953144
twisti
parents:
1784
diff
changeset
|
1574 ((SharkCompiler *) compiler())->free_compiled_method(insts_begin()); |
| 1692 | 1575 #endif // SHARK |
| 1576 | |
| 0 | 1577 ((CodeBlob*)(this))->flush(); |
| 1578 | |
| 1579 CodeCache::free(this); | |
| 1580 } | |
| 1581 | |
| 1582 | |
| 1583 // | |
| 1584 // Notify all classes this nmethod is dependent on that it is no | |
| 1585 // longer dependent. This should only be called in two situations. | |
| 1586 // First, when a nmethod transitions to a zombie all dependents need | |
| 1587 // to be clear. Since zombification happens at a safepoint there's no | |
| 1588 // synchronization issues. The second place is a little more tricky. | |
| 1589 // During phase 1 of mark sweep class unloading may happen and as a | |
| 1590 // result some nmethods may get unloaded. In this case the flushing | |
| 1591 // of dependencies must happen during phase 1 since after GC any | |
| 1592 // dependencies in the unloaded nmethod won't be updated, so | |
| 1593 // traversing the dependency information in unsafe. In that case this | |
| 1594 // function is called with a non-NULL argument and this function only | |
| 1595 // notifies instanceKlasses that are reachable | |
| 1596 | |
| 1597 void nmethod::flush_dependencies(BoolObjectClosure* is_alive) { | |
|
1538
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|
1598 assert_locked_or_safepoint(CodeCache_lock); |
| 0 | 1599 assert(Universe::heap()->is_gc_active() == (is_alive != NULL), |
| 1600 "is_alive is non-NULL if and only if we are called during GC"); | |
| 1601 if (!has_flushed_dependencies()) { | |
| 1602 set_has_flushed_dependencies(); | |
| 1603 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
|
6725
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changeset
|
1604 Klass* klass = deps.context_type(); |
| 0 | 1605 if (klass == NULL) continue; // ignore things like evol_method |
| 1606 | |
| 1607 // During GC the is_alive closure is non-NULL, and is used to | |
| 1608 // determine liveness of dependees that need to be updated. | |
|
6725
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coleenp
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6266
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|
1609 if (is_alive == NULL || klass->is_loader_alive(is_alive)) { |
|
da91efe96a93
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diff
changeset
|
1610 InstanceKlass::cast(klass)->remove_dependent_nmethod(this); |
| 0 | 1611 } |
| 1612 } | |
| 1613 } | |
| 1614 } | |
| 1615 | |
| 1616 | |
| 1617 // If this oop is not live, the nmethod can be unloaded. | |
|
6787
8966c2d65d96
7200470: KeepAliveClosure not needed in CodeCache::do_unloading
brutisso
parents:
6725
diff
changeset
|
1618 bool nmethod::can_unload(BoolObjectClosure* is_alive, oop* root, bool unloading_occurred) { |
| 0 | 1619 assert(root != NULL, "just checking"); |
| 1620 oop obj = *root; | |
| 1621 if (obj == NULL || is_alive->do_object_b(obj)) { | |
| 1622 return false; | |
| 1623 } | |
|
6725
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|
1624 |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
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931
diff
changeset
|
1625 // If ScavengeRootsInCode is true, an nmethod might be unloaded |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
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diff
changeset
|
1626 // simply because one of its constant oops has gone dead. |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
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931
diff
changeset
|
1627 // No actual classes need to be unloaded in order for this to occur. |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1628 assert(unloading_occurred || ScavengeRootsInCode, "Inconsistency in unloading"); |
| 0 | 1629 make_unloaded(is_alive, obj); |
| 1630 return true; | |
| 1631 } | |
| 1632 | |
| 1633 // ------------------------------------------------------------------ | |
| 1634 // post_compiled_method_load_event | |
| 1635 // new method for install_code() path | |
| 1636 // Transfer information from compilation to jvmti | |
| 1637 void nmethod::post_compiled_method_load_event() { | |
| 1638 | |
|
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1639 Method* moop = method(); |
| 4006 | 1640 #ifndef USDT2 |
| 0 | 1641 HS_DTRACE_PROBE8(hotspot, compiled__method__load, |
| 1642 moop->klass_name()->bytes(), | |
| 1643 moop->klass_name()->utf8_length(), | |
| 1644 moop->name()->bytes(), | |
| 1645 moop->name()->utf8_length(), | |
| 1646 moop->signature()->bytes(), | |
| 1647 moop->signature()->utf8_length(), | |
| 1748 | 1648 insts_begin(), insts_size()); |
| 4006 | 1649 #else /* USDT2 */ |
| 1650 HOTSPOT_COMPILED_METHOD_LOAD( | |
| 1651 (char *) moop->klass_name()->bytes(), | |
| 1652 moop->klass_name()->utf8_length(), | |
| 1653 (char *) moop->name()->bytes(), | |
| 1654 moop->name()->utf8_length(), | |
| 1655 (char *) moop->signature()->bytes(), | |
| 1656 moop->signature()->utf8_length(), | |
| 1657 insts_begin(), insts_size()); | |
| 1658 #endif /* USDT2 */ | |
| 0 | 1659 |
|
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1660 if (JvmtiExport::should_post_compiled_method_load() || |
|
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1661 JvmtiExport::should_post_compiled_method_unload()) { |
|
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1662 get_and_cache_jmethod_id(); |
|
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1663 } |
|
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1664 |
| 0 | 1665 if (JvmtiExport::should_post_compiled_method_load()) { |
|
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1666 // Let the Service thread (which is a real Java thread) post the event |
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1667 MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag); |
|
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1668 JvmtiDeferredEventQueue::enqueue( |
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1669 JvmtiDeferredEvent::compiled_method_load_event(this)); |
| 0 | 1670 } |
| 1671 } | |
| 1672 | |
|
1616
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1673 jmethodID nmethod::get_and_cache_jmethod_id() { |
|
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1674 if (_jmethod_id == NULL) { |
|
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1675 // Cache the jmethod_id since it can no longer be looked up once the |
|
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1676 // method itself has been marked for unloading. |
|
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1677 _jmethod_id = method()->jmethod_id(); |
|
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1678 } |
|
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1679 return _jmethod_id; |
|
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1680 } |
|
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1681 |
| 0 | 1682 void nmethod::post_compiled_method_unload() { |
|
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1683 if (unload_reported()) { |
|
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1684 // During unloading we transition to unloaded and then to zombie |
|
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1685 // and the unloading is reported during the first transition. |
|
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1686 return; |
|
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1687 } |
|
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1688 |
| 0 | 1689 assert(_method != NULL && !is_unloaded(), "just checking"); |
| 1690 DTRACE_METHOD_UNLOAD_PROBE(method()); | |
| 1691 | |
| 1692 // If a JVMTI agent has enabled the CompiledMethodUnload event then | |
|
1616
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1693 // post the event. Sometime later this nmethod will be made a zombie |
|
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1694 // by the sweeper but the Method* will not be valid at that point. |
|
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1695 // If the _jmethod_id is null then no load event was ever requested |
|
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1696 // so don't bother posting the unload. The main reason for this is |
|
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1697 // that the jmethodID is a weak reference to the Method* so if |
|
1616
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1698 // it's being unloaded there's no way to look it up since the weak |
|
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1699 // ref will have been cleared. |
|
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1700 if (_jmethod_id != NULL && JvmtiExport::should_post_compiled_method_unload()) { |
| 0 | 1701 assert(!unload_reported(), "already unloaded"); |
|
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1702 JvmtiDeferredEvent event = |
|
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1703 JvmtiDeferredEvent::compiled_method_unload_event(this, |
|
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1704 _jmethod_id, insts_begin()); |
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1705 if (SafepointSynchronize::is_at_safepoint()) { |
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1706 // Don't want to take the queueing lock. Add it as pending and |
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1707 // it will get enqueued later. |
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1708 JvmtiDeferredEventQueue::add_pending_event(event); |
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1709 } else { |
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1710 MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag); |
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1711 JvmtiDeferredEventQueue::enqueue(event); |
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1712 } |
| 0 | 1713 } |
| 1714 | |
| 1715 // The JVMTI CompiledMethodUnload event can be enabled or disabled at | |
| 1716 // any time. As the nmethod is being unloaded now we mark it has | |
| 1717 // having the unload event reported - this will ensure that we don't | |
| 1718 // attempt to report the event in the unlikely scenario where the | |
| 1719 // event is enabled at the time the nmethod is made a zombie. | |
| 1720 set_unload_reported(); | |
| 1721 } | |
| 1722 | |
| 1723 // This is called at the end of the strong tracing/marking phase of a | |
| 1724 // GC to unload an nmethod if it contains otherwise unreachable | |
| 1725 // oops. | |
| 1726 | |
|
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1727 void nmethod::do_unloading(BoolObjectClosure* is_alive, bool unloading_occurred) { |
| 0 | 1728 // Make sure the oop's ready to receive visitors |
| 1729 assert(!is_zombie() && !is_unloaded(), | |
| 1730 "should not call follow on zombie or unloaded nmethod"); | |
| 1731 | |
| 1732 // If the method is not entrant then a JMP is plastered over the | |
| 1733 // first few bytes. If an oop in the old code was there, that oop | |
| 1734 // should not get GC'd. Skip the first few bytes of oops on | |
| 1735 // not-entrant methods. | |
| 1736 address low_boundary = verified_entry_point(); | |
| 1737 if (is_not_entrant()) { | |
| 1738 low_boundary += NativeJump::instruction_size; | |
| 1739 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
| 1740 // (See comment above.) | |
| 1741 } | |
| 1742 | |
| 1743 // The RedefineClasses() API can cause the class unloading invariant | |
| 1744 // to no longer be true. See jvmtiExport.hpp for details. | |
| 1745 // Also, leave a debugging breadcrumb in local flag. | |
| 1746 bool a_class_was_redefined = JvmtiExport::has_redefined_a_class(); | |
| 1747 if (a_class_was_redefined) { | |
| 1748 // This set of the unloading_occurred flag is done before the | |
| 1749 // call to post_compiled_method_unload() so that the unloading | |
| 1750 // of this nmethod is reported. | |
| 1751 unloading_occurred = true; | |
| 1752 } | |
| 1753 | |
| 9707 | 1754 #ifdef GRAAL |
| 1755 // Follow Graal method | |
| 1756 if (_graal_installed_code != NULL) { | |
| 1757 if (HotSpotNmethod::isDefault(_graal_installed_code)) { | |
| 1758 if (!is_alive->do_object_b(_graal_installed_code)) { | |
| 1759 _graal_installed_code = NULL; | |
| 1760 } | |
| 1761 } else { | |
| 1762 if (can_unload(is_alive, (oop*)&_graal_installed_code, unloading_occurred)) { | |
| 1763 return; | |
| 1764 } | |
| 1765 } | |
| 1766 } | |
| 1767 #endif | |
| 1768 | |
| 0 | 1769 // Exception cache |
| 1770 ExceptionCache* ec = exception_cache(); | |
| 1771 while (ec != NULL) { | |
|
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1772 Klass* ex_klass = ec->exception_type(); |
| 0 | 1773 ExceptionCache* next_ec = ec->next(); |
|
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1774 if (ex_klass != NULL && !ex_klass->is_loader_alive(is_alive)) { |
| 0 | 1775 remove_from_exception_cache(ec); |
| 1776 } | |
| 1777 ec = next_ec; | |
| 1778 } | |
| 1779 | |
| 1780 // If class unloading occurred we first iterate over all inline caches and | |
| 1781 // clear ICs where the cached oop is referring to an unloaded klass or method. | |
| 1782 // The remaining live cached oops will be traversed in the relocInfo::oop_type | |
| 1783 // iteration below. | |
| 1784 if (unloading_occurred) { | |
| 1785 RelocIterator iter(this, low_boundary); | |
| 1786 while(iter.next()) { | |
| 1787 if (iter.type() == relocInfo::virtual_call_type) { | |
| 1788 CompiledIC *ic = CompiledIC_at(iter.reloc()); | |
|
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1789 if (ic->is_icholder_call()) { |
| 0 | 1790 // The only exception is compiledICHolder oops which may |
| 1791 // yet be marked below. (We check this further below). | |
|
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1792 CompiledICHolder* cichk_oop = ic->cached_icholder(); |
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1793 if (cichk_oop->holder_method()->method_holder()->is_loader_alive(is_alive) && |
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1794 cichk_oop->holder_klass()->is_loader_alive(is_alive)) { |
| 0 | 1795 continue; |
| 1796 } | |
|
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1797 } else { |
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1798 Metadata* ic_oop = ic->cached_metadata(); |
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1799 if (ic_oop != NULL) { |
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1800 if (ic_oop->is_klass()) { |
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1801 if (((Klass*)ic_oop)->is_loader_alive(is_alive)) { |
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1802 continue; |
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1803 } |
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1804 } else if (ic_oop->is_method()) { |
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1805 if (((Method*)ic_oop)->method_holder()->is_loader_alive(is_alive)) { |
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1806 continue; |
|
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1807 } |
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1808 } else { |
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1809 ShouldNotReachHere(); |
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1810 } |
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1811 } |
| 0 | 1812 } |
| 1813 ic->set_to_clean(); | |
| 1814 } | |
| 1815 } | |
| 1816 } | |
| 1817 | |
| 1818 // Compiled code | |
|
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1819 { |
| 0 | 1820 RelocIterator iter(this, low_boundary); |
| 1821 while (iter.next()) { | |
| 1822 if (iter.type() == relocInfo::oop_type) { | |
| 1823 oop_Relocation* r = iter.oop_reloc(); | |
| 1824 // In this loop, we must only traverse those oops directly embedded in | |
| 1825 // the code. Other oops (oop_index>0) are seen as part of scopes_oops. | |
| 1826 assert(1 == (r->oop_is_immediate()) + | |
| 1827 (r->oop_addr() >= oops_begin() && r->oop_addr() < oops_end()), | |
| 1828 "oop must be found in exactly one place"); | |
| 1829 if (r->oop_is_immediate() && r->oop_value() != NULL) { | |
|
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1830 if (can_unload(is_alive, r->oop_addr(), unloading_occurred)) { |
| 0 | 1831 return; |
| 1832 } | |
| 1833 } | |
| 1834 } | |
| 1835 } | |
|
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1836 } |
| 0 | 1837 |
| 1838 | |
| 1839 // Scopes | |
| 1840 for (oop* p = oops_begin(); p < oops_end(); p++) { | |
| 1841 if (*p == Universe::non_oop_word()) continue; // skip non-oops | |
|
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1842 if (can_unload(is_alive, p, unloading_occurred)) { |
| 0 | 1843 return; |
| 1844 } | |
| 1845 } | |
| 1846 | |
|
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1847 // Ensure that all metadata is still alive |
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1848 verify_metadata_loaders(low_boundary, is_alive); |
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1849 } |
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1850 |
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1851 #ifdef ASSERT |
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1852 |
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1853 class CheckClass : AllStatic { |
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1854 static BoolObjectClosure* _is_alive; |
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1855 |
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1856 // Check class_loader is alive for this bit of metadata. |
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1857 static void check_class(Metadata* md) { |
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1858 Klass* klass = NULL; |
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1859 if (md->is_klass()) { |
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1860 klass = ((Klass*)md); |
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1861 } else if (md->is_method()) { |
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1862 klass = ((Method*)md)->method_holder(); |
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1863 } else if (md->is_methodData()) { |
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1864 klass = ((MethodData*)md)->method()->method_holder(); |
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1865 } else { |
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1866 md->print(); |
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1867 ShouldNotReachHere(); |
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1868 } |
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1869 assert(klass->is_loader_alive(_is_alive), "must be alive"); |
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1870 } |
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1871 public: |
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1872 static void do_check_class(BoolObjectClosure* is_alive, nmethod* nm) { |
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1873 assert(SafepointSynchronize::is_at_safepoint(), "this is only ok at safepoint"); |
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1874 _is_alive = is_alive; |
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1875 nm->metadata_do(check_class); |
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1876 } |
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1877 }; |
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1878 |
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1879 // This is called during a safepoint so can use static data |
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1880 BoolObjectClosure* CheckClass::_is_alive = NULL; |
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1881 #endif // ASSERT |
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1882 |
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1883 |
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1884 // Processing of oop references should have been sufficient to keep |
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1885 // all strong references alive. Any weak references should have been |
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1886 // cleared as well. Visit all the metadata and ensure that it's |
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1887 // really alive. |
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1888 void nmethod::verify_metadata_loaders(address low_boundary, BoolObjectClosure* is_alive) { |
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1889 #ifdef ASSERT |
| 0 | 1890 RelocIterator iter(this, low_boundary); |
| 1891 while (iter.next()) { | |
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1892 // static_stub_Relocations may have dangling references to |
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1893 // Method*s so trim them out here. Otherwise it looks like |
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1894 // compiled code is maintaining a link to dead metadata. |
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1895 address static_call_addr = NULL; |
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1896 if (iter.type() == relocInfo::opt_virtual_call_type) { |
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1897 CompiledIC* cic = CompiledIC_at(iter.reloc()); |
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1898 if (!cic->is_call_to_interpreted()) { |
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1899 static_call_addr = iter.addr(); |
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1900 } |
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1901 } else if (iter.type() == relocInfo::static_call_type) { |
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1902 CompiledStaticCall* csc = compiledStaticCall_at(iter.reloc()); |
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1903 if (!csc->is_call_to_interpreted()) { |
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1904 static_call_addr = iter.addr(); |
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1905 } |
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1906 } |
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1907 if (static_call_addr != NULL) { |
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1908 RelocIterator sciter(this, low_boundary); |
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1909 while (sciter.next()) { |
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1910 if (sciter.type() == relocInfo::static_stub_type && |
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1911 sciter.static_stub_reloc()->static_call() == static_call_addr) { |
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1912 sciter.static_stub_reloc()->clear_inline_cache(); |
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1913 } |
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1914 } |
| 0 | 1915 } |
| 1916 } | |
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1917 // Check that the metadata embedded in the nmethod is alive |
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1918 CheckClass::do_check_class(is_alive, this); |
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1919 #endif |
| 0 | 1920 } |
| 1921 | |
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1922 |
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1923 // Iterate over metadata calling this function. Used by RedefineClasses |
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1924 void nmethod::metadata_do(void f(Metadata*)) { |
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1925 address low_boundary = verified_entry_point(); |
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1926 if (is_not_entrant()) { |
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1927 low_boundary += NativeJump::instruction_size; |
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1928 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. |
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1929 // (See comment above.) |
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1930 } |
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1931 { |
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1932 // Visit all immediate references that are embedded in the instruction stream. |
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1933 RelocIterator iter(this, low_boundary); |
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1934 while (iter.next()) { |
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1935 if (iter.type() == relocInfo::metadata_type ) { |
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1936 metadata_Relocation* r = iter.metadata_reloc(); |
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1937 // In this lmetadata, we must only follow those metadatas directly embedded in |
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1938 // the code. Other metadatas (oop_index>0) are seen as part of |
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1939 // the metadata section below. |
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1940 assert(1 == (r->metadata_is_immediate()) + |
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1941 (r->metadata_addr() >= metadata_begin() && r->metadata_addr() < metadata_end()), |
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1942 "metadata must be found in exactly one place"); |
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1943 if (r->metadata_is_immediate() && r->metadata_value() != NULL) { |
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1944 Metadata* md = r->metadata_value(); |
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1945 f(md); |
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1946 } |
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1947 } else if (iter.type() == relocInfo::virtual_call_type) { |
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1948 // Check compiledIC holders associated with this nmethod |
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1949 CompiledIC *ic = CompiledIC_at(iter.reloc()); |
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1950 if (ic->is_icholder_call()) { |
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1951 CompiledICHolder* cichk = ic->cached_icholder(); |
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1952 f(cichk->holder_method()); |
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1953 f(cichk->holder_klass()); |
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1954 } else { |
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1955 Metadata* ic_oop = ic->cached_metadata(); |
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1956 if (ic_oop != NULL) { |
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1957 f(ic_oop); |
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1958 } |
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1959 } |
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1960 } |
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1961 } |
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1962 } |
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1963 |
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1964 // Visit the metadata section |
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1965 for (Metadata** p = metadata_begin(); p < metadata_end(); p++) { |
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1966 if (*p == Universe::non_oop_word() || *p == NULL) continue; // skip non-oops |
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1967 Metadata* md = *p; |
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1968 f(md); |
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1969 } |
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1970 |
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1971 // Call function Method*, not embedded in these other places. |
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1972 if (_method != NULL) f(_method); |
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1973 } |
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1974 |
| 12080 | 1975 void nmethod::oops_do(OopClosure* f, bool allow_zombie) { |
| 0 | 1976 // make sure the oops ready to receive visitors |
| 12080 | 1977 assert(allow_zombie || !is_zombie(), "should not call follow on zombie nmethod"); |
| 1978 assert(!is_unloaded(), "should not call follow on unloaded nmethod"); | |
| 0 | 1979 |
| 1980 // If the method is not entrant or zombie then a JMP is plastered over the | |
| 1981 // first few bytes. If an oop in the old code was there, that oop | |
| 1982 // should not get GC'd. Skip the first few bytes of oops on | |
| 1983 // not-entrant methods. | |
| 1984 address low_boundary = verified_entry_point(); | |
| 1985 if (is_not_entrant()) { | |
| 1986 low_boundary += NativeJump::instruction_size; | |
| 1987 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
| 1988 // (See comment above.) | |
| 1989 } | |
| 1990 | |
| 9707 | 1991 #ifdef GRAAL |
| 1992 if (_graal_installed_code != NULL) { | |
| 1993 f->do_oop((oop*) &_graal_installed_code); | |
| 1994 } | |
| 1995 if (_triggered_deoptimizations != NULL) { | |
| 1996 f->do_oop((oop*) &_triggered_deoptimizations); | |
| 1997 } | |
| 1998 #endif | |
| 1999 | |
| 0 | 2000 RelocIterator iter(this, low_boundary); |
| 941 | 2001 |
| 0 | 2002 while (iter.next()) { |
| 2003 if (iter.type() == relocInfo::oop_type ) { | |
| 2004 oop_Relocation* r = iter.oop_reloc(); | |
| 2005 // In this loop, we must only follow those oops directly embedded in | |
| 2006 // the code. Other oops (oop_index>0) are seen as part of scopes_oops. | |
| 941 | 2007 assert(1 == (r->oop_is_immediate()) + |
| 2008 (r->oop_addr() >= oops_begin() && r->oop_addr() < oops_end()), | |
| 2009 "oop must be found in exactly one place"); | |
| 0 | 2010 if (r->oop_is_immediate() && r->oop_value() != NULL) { |
| 2011 f->do_oop(r->oop_addr()); | |
| 2012 } | |
| 2013 } | |
| 2014 } | |
| 2015 | |
| 2016 // Scopes | |
|
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2017 // This includes oop constants not inlined in the code stream. |
| 0 | 2018 for (oop* p = oops_begin(); p < oops_end(); p++) { |
| 2019 if (*p == Universe::non_oop_word()) continue; // skip non-oops | |
| 2020 f->do_oop(p); | |
| 2021 } | |
| 2022 } | |
| 2023 | |
|
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2024 #define NMETHOD_SENTINEL ((nmethod*)badAddress) |
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2025 |
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2026 nmethod* volatile nmethod::_oops_do_mark_nmethods; |
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2027 |
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2028 // An nmethod is "marked" if its _mark_link is set non-null. |
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2029 // Even if it is the end of the linked list, it will have a non-null link value, |
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2030 // as long as it is on the list. |
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2031 // This code must be MP safe, because it is used from parallel GC passes. |
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2032 bool nmethod::test_set_oops_do_mark() { |
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2033 assert(nmethod::oops_do_marking_is_active(), "oops_do_marking_prologue must be called"); |
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2034 nmethod* observed_mark_link = _oops_do_mark_link; |
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2035 if (observed_mark_link == NULL) { |
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2036 // Claim this nmethod for this thread to mark. |
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2037 observed_mark_link = (nmethod*) |
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2038 Atomic::cmpxchg_ptr(NMETHOD_SENTINEL, &_oops_do_mark_link, NULL); |
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2039 if (observed_mark_link == NULL) { |
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2040 |
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2041 // Atomically append this nmethod (now claimed) to the head of the list: |
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2042 nmethod* observed_mark_nmethods = _oops_do_mark_nmethods; |
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2043 for (;;) { |
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2044 nmethod* required_mark_nmethods = observed_mark_nmethods; |
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2045 _oops_do_mark_link = required_mark_nmethods; |
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2046 observed_mark_nmethods = (nmethod*) |
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2047 Atomic::cmpxchg_ptr(this, &_oops_do_mark_nmethods, required_mark_nmethods); |
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2048 if (observed_mark_nmethods == required_mark_nmethods) |
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2049 break; |
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2050 } |
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2051 // Mark was clear when we first saw this guy. |
|
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2052 NOT_PRODUCT(if (TraceScavenge) print_on(tty, "oops_do, mark")); |
|
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2053 return false; |
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2054 } |
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2055 } |
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2056 // On fall through, another racing thread marked this nmethod before we did. |
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2057 return true; |
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2058 } |
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2059 |
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2060 void nmethod::oops_do_marking_prologue() { |
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2061 NOT_PRODUCT(if (TraceScavenge) tty->print_cr("[oops_do_marking_prologue")); |
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2062 assert(_oops_do_mark_nmethods == NULL, "must not call oops_do_marking_prologue twice in a row"); |
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2063 // We use cmpxchg_ptr instead of regular assignment here because the user |
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2064 // may fork a bunch of threads, and we need them all to see the same state. |
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2065 void* observed = Atomic::cmpxchg_ptr(NMETHOD_SENTINEL, &_oops_do_mark_nmethods, NULL); |
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2066 guarantee(observed == NULL, "no races in this sequential code"); |
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2067 } |
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2068 |
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2069 void nmethod::oops_do_marking_epilogue() { |
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2070 assert(_oops_do_mark_nmethods != NULL, "must not call oops_do_marking_epilogue twice in a row"); |
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2071 nmethod* cur = _oops_do_mark_nmethods; |
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2072 while (cur != NMETHOD_SENTINEL) { |
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2073 assert(cur != NULL, "not NULL-terminated"); |
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2074 nmethod* next = cur->_oops_do_mark_link; |
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2075 cur->_oops_do_mark_link = NULL; |
|
2375
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2076 cur->fix_oop_relocations(); |
|
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2077 NOT_PRODUCT(if (TraceScavenge) cur->print_on(tty, "oops_do, unmark")); |
|
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2078 cur = next; |
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2079 } |
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2080 void* required = _oops_do_mark_nmethods; |
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2081 void* observed = Atomic::cmpxchg_ptr(NULL, &_oops_do_mark_nmethods, required); |
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2082 guarantee(observed == required, "no races in this sequential code"); |
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2083 NOT_PRODUCT(if (TraceScavenge) tty->print_cr("oops_do_marking_epilogue]")); |
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2084 } |
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2085 |
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2086 class DetectScavengeRoot: public OopClosure { |
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2087 bool _detected_scavenge_root; |
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2088 public: |
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2089 DetectScavengeRoot() : _detected_scavenge_root(false) |
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2090 { NOT_PRODUCT(_print_nm = NULL); } |
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2091 bool detected_scavenge_root() { return _detected_scavenge_root; } |
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2092 virtual void do_oop(oop* p) { |
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2093 if ((*p) != NULL && (*p)->is_scavengable()) { |
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2094 NOT_PRODUCT(maybe_print(p)); |
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2095 _detected_scavenge_root = true; |
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2096 } |
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2097 } |
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2098 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
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2099 |
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2100 #ifndef PRODUCT |
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2101 nmethod* _print_nm; |
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2102 void maybe_print(oop* p) { |
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2103 if (_print_nm == NULL) return; |
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2104 if (!_detected_scavenge_root) _print_nm->print_on(tty, "new scavenge root"); |
|
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2105 tty->print_cr(""PTR_FORMAT"[offset=%d] detected scavengable oop "PTR_FORMAT" (found at "PTR_FORMAT")", |
|
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2106 _print_nm, (int)((intptr_t)p - (intptr_t)_print_nm), |
|
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2107 (void *)(*p), (intptr_t)p); |
|
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2108 (*p)->print(); |
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2109 } |
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2110 #endif //PRODUCT |
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2111 }; |
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2112 |
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2113 bool nmethod::detect_scavenge_root_oops() { |
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2114 DetectScavengeRoot detect_scavenge_root; |
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2115 NOT_PRODUCT(if (TraceScavenge) detect_scavenge_root._print_nm = this); |
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2116 oops_do(&detect_scavenge_root); |
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2117 return detect_scavenge_root.detected_scavenge_root(); |
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2118 } |
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2119 |
| 0 | 2120 // Method that knows how to preserve outgoing arguments at call. This method must be |
| 2121 // called with a frame corresponding to a Java invoke | |
| 2122 void nmethod::preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { | |
| 1692 | 2123 #ifndef SHARK |
| 0 | 2124 if (!method()->is_native()) { |
| 2125 SimpleScopeDesc ssd(this, fr.pc()); | |
| 2142 | 2126 Bytecode_invoke call(ssd.method(), ssd.bci()); |
| 10390 | 2127 bool has_receiver = call.has_receiver(); |
| 2128 bool has_appendix = call.has_appendix(); | |
|
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2129 Symbol* signature = call.signature(); |
| 10390 | 2130 fr.oops_compiled_arguments_do(signature, has_receiver, has_appendix, reg_map, f); |
| 0 | 2131 } |
| 1692 | 2132 #endif // !SHARK |
| 0 | 2133 } |
| 2134 | |
| 2135 | |
| 2136 oop nmethod::embeddedOop_at(u_char* p) { | |
|
2349
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2137 RelocIterator iter(this, p, p + 1); |
| 0 | 2138 while (iter.next()) |
| 2139 if (iter.type() == relocInfo::oop_type) { | |
| 2140 return iter.oop_reloc()->oop_value(); | |
| 2141 } | |
| 2142 return NULL; | |
| 2143 } | |
| 2144 | |
| 2145 | |
| 2146 inline bool includes(void* p, void* from, void* to) { | |
| 2147 return from <= p && p < to; | |
| 2148 } | |
| 2149 | |
| 2150 | |
| 2151 void nmethod::copy_scopes_pcs(PcDesc* pcs, int count) { | |
| 2152 assert(count >= 2, "must be sentinel values, at least"); | |
| 2153 | |
| 2154 #ifdef ASSERT | |
| 2155 // must be sorted and unique; we do a binary search in find_pc_desc() | |
| 2156 int prev_offset = pcs[0].pc_offset(); | |
| 2157 assert(prev_offset == PcDesc::lower_offset_limit, | |
| 2158 "must start with a sentinel"); | |
| 2159 for (int i = 1; i < count; i++) { | |
| 2160 int this_offset = pcs[i].pc_offset(); | |
| 2161 assert(this_offset > prev_offset, "offsets must be sorted"); | |
| 2162 prev_offset = this_offset; | |
| 2163 } | |
| 2164 assert(prev_offset == PcDesc::upper_offset_limit, | |
| 2165 "must end with a sentinel"); | |
| 2166 #endif //ASSERT | |
| 2167 | |
|
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2168 // Search for MethodHandle invokes and tag the nmethod. |
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2169 for (int i = 0; i < count; i++) { |
|
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2170 if (pcs[i].is_method_handle_invoke()) { |
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2171 set_has_method_handle_invokes(true); |
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2172 break; |
|
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|
2173 } |
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|
2174 } |
|
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|
2175 assert(has_method_handle_invokes() == (_deoptimize_mh_offset != -1), "must have deopt mh handler"); |
|
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2176 |
| 0 | 2177 int size = count * sizeof(PcDesc); |
| 2178 assert(scopes_pcs_size() >= size, "oob"); | |
| 2179 memcpy(scopes_pcs_begin(), pcs, size); | |
| 2180 | |
| 2181 // Adjust the final sentinel downward. | |
| 2182 PcDesc* last_pc = &scopes_pcs_begin()[count-1]; | |
| 2183 assert(last_pc->pc_offset() == PcDesc::upper_offset_limit, "sanity"); | |
| 1748 | 2184 last_pc->set_pc_offset(content_size() + 1); |
| 0 | 2185 for (; last_pc + 1 < scopes_pcs_end(); last_pc += 1) { |
| 2186 // Fill any rounding gaps with copies of the last record. | |
| 2187 last_pc[1] = last_pc[0]; | |
| 2188 } | |
| 2189 // The following assert could fail if sizeof(PcDesc) is not | |
| 2190 // an integral multiple of oopSize (the rounding term). | |
| 2191 // If it fails, change the logic to always allocate a multiple | |
| 2192 // of sizeof(PcDesc), and fill unused words with copies of *last_pc. | |
| 2193 assert(last_pc + 1 == scopes_pcs_end(), "must match exactly"); | |
| 2194 } | |
| 2195 | |
| 2196 void nmethod::copy_scopes_data(u_char* buffer, int size) { | |
| 2197 assert(scopes_data_size() >= size, "oob"); | |
| 2198 memcpy(scopes_data_begin(), buffer, size); | |
| 2199 } | |
| 2200 | |
| 2201 | |
| 2202 #ifdef ASSERT | |
| 2203 static PcDesc* linear_search(nmethod* nm, int pc_offset, bool approximate) { | |
| 2204 PcDesc* lower = nm->scopes_pcs_begin(); | |
| 2205 PcDesc* upper = nm->scopes_pcs_end(); | |
| 2206 lower += 1; // exclude initial sentinel | |
| 2207 PcDesc* res = NULL; | |
| 2208 for (PcDesc* p = lower; p < upper; p++) { | |
|
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|
2209 NOT_PRODUCT(--pc_nmethod_stats.pc_desc_tests); // don't count this call to match_desc |
| 0 | 2210 if (match_desc(p, pc_offset, approximate)) { |
| 2211 if (res == NULL) | |
| 2212 res = p; | |
| 2213 else | |
| 2214 res = (PcDesc*) badAddress; | |
| 2215 } | |
| 2216 } | |
| 2217 return res; | |
| 2218 } | |
| 2219 #endif | |
| 2220 | |
| 2221 | |
| 2222 // Finds a PcDesc with real-pc equal to "pc" | |
| 2223 PcDesc* nmethod::find_pc_desc_internal(address pc, bool approximate) { | |
| 1748 | 2224 address base_address = code_begin(); |
| 0 | 2225 if ((pc < base_address) || |
| 2226 (pc - base_address) >= (ptrdiff_t) PcDesc::upper_offset_limit) { | |
| 2227 return NULL; // PC is wildly out of range | |
| 2228 } | |
| 2229 int pc_offset = (int) (pc - base_address); | |
| 2230 | |
| 2231 // Check the PcDesc cache if it contains the desired PcDesc | |
| 2232 // (This as an almost 100% hit rate.) | |
| 2233 PcDesc* res = _pc_desc_cache.find_pc_desc(pc_offset, approximate); | |
| 2234 if (res != NULL) { | |
| 2235 assert(res == linear_search(this, pc_offset, approximate), "cache ok"); | |
| 2236 return res; | |
| 2237 } | |
| 2238 | |
| 2239 // Fallback algorithm: quasi-linear search for the PcDesc | |
| 2240 // Find the last pc_offset less than the given offset. | |
| 2241 // The successor must be the required match, if there is a match at all. | |
| 2242 // (Use a fixed radix to avoid expensive affine pointer arithmetic.) | |
| 2243 PcDesc* lower = scopes_pcs_begin(); | |
| 2244 PcDesc* upper = scopes_pcs_end(); | |
| 2245 upper -= 1; // exclude final sentinel | |
| 2246 if (lower >= upper) return NULL; // native method; no PcDescs at all | |
| 2247 | |
| 2248 #define assert_LU_OK \ | |
| 2249 /* invariant on lower..upper during the following search: */ \ | |
| 2250 assert(lower->pc_offset() < pc_offset, "sanity"); \ | |
| 2251 assert(upper->pc_offset() >= pc_offset, "sanity") | |
| 2252 assert_LU_OK; | |
| 2253 | |
| 2254 // Use the last successful return as a split point. | |
| 2255 PcDesc* mid = _pc_desc_cache.last_pc_desc(); | |
|
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|
2256 NOT_PRODUCT(++pc_nmethod_stats.pc_desc_searches); |
| 0 | 2257 if (mid->pc_offset() < pc_offset) { |
| 2258 lower = mid; | |
| 2259 } else { | |
| 2260 upper = mid; | |
| 2261 } | |
| 2262 | |
| 2263 // Take giant steps at first (4096, then 256, then 16, then 1) | |
| 2264 const int LOG2_RADIX = 4 /*smaller steps in debug mode:*/ debug_only(-1); | |
| 2265 const int RADIX = (1 << LOG2_RADIX); | |
| 2266 for (int step = (1 << (LOG2_RADIX*3)); step > 1; step >>= LOG2_RADIX) { | |
| 2267 while ((mid = lower + step) < upper) { | |
| 2268 assert_LU_OK; | |
|
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|
2269 NOT_PRODUCT(++pc_nmethod_stats.pc_desc_searches); |
| 0 | 2270 if (mid->pc_offset() < pc_offset) { |
| 2271 lower = mid; | |
| 2272 } else { | |
| 2273 upper = mid; | |
| 2274 break; | |
| 2275 } | |
| 2276 } | |
| 2277 assert_LU_OK; | |
| 2278 } | |
| 2279 | |
| 2280 // Sneak up on the value with a linear search of length ~16. | |
| 2281 while (true) { | |
| 2282 assert_LU_OK; | |
| 2283 mid = lower + 1; | |
|
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2284 NOT_PRODUCT(++pc_nmethod_stats.pc_desc_searches); |
| 0 | 2285 if (mid->pc_offset() < pc_offset) { |
| 2286 lower = mid; | |
| 2287 } else { | |
| 2288 upper = mid; | |
| 2289 break; | |
| 2290 } | |
| 2291 } | |
| 2292 #undef assert_LU_OK | |
| 2293 | |
| 2294 if (match_desc(upper, pc_offset, approximate)) { | |
| 2295 assert(upper == linear_search(this, pc_offset, approximate), "search ok"); | |
| 2296 _pc_desc_cache.add_pc_desc(upper); | |
| 2297 return upper; | |
| 2298 } else { | |
| 2299 assert(NULL == linear_search(this, pc_offset, approximate), "search ok"); | |
| 2300 return NULL; | |
| 2301 } | |
| 2302 } | |
| 2303 | |
| 2304 | |
| 2305 bool nmethod::check_all_dependencies() { | |
| 2306 bool found_check = false; | |
| 2307 // wholesale check of all dependencies | |
| 2308 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
| 2309 if (deps.check_dependency() != NULL) { | |
| 2310 found_check = true; | |
| 2311 NOT_DEBUG(break); | |
| 2312 } | |
| 2313 } | |
| 2314 return found_check; // tell caller if we found anything | |
| 2315 } | |
| 2316 | |
| 2317 bool nmethod::check_dependency_on(DepChange& changes) { | |
| 2318 // What has happened: | |
| 2319 // 1) a new class dependee has been added | |
| 2320 // 2) dependee and all its super classes have been marked | |
| 2321 bool found_check = false; // set true if we are upset | |
| 2322 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
| 2323 // Evaluate only relevant dependencies. | |
| 2324 if (deps.spot_check_dependency_at(changes) != NULL) { | |
| 2325 found_check = true; | |
| 2326 NOT_DEBUG(break); | |
| 2327 } | |
| 2328 } | |
| 2329 return found_check; | |
| 2330 } | |
| 2331 | |
|
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2332 bool nmethod::is_evol_dependent_on(Klass* dependee) { |
|
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2333 InstanceKlass *dependee_ik = InstanceKlass::cast(dependee); |
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2334 Array<Method*>* dependee_methods = dependee_ik->methods(); |
| 0 | 2335 for (Dependencies::DepStream deps(this); deps.next(); ) { |
| 2336 if (deps.type() == Dependencies::evol_method) { | |
|
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2337 Method* method = deps.method_argument(0); |
| 0 | 2338 for (int j = 0; j < dependee_methods->length(); j++) { |
|
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2339 if (dependee_methods->at(j) == method) { |
| 0 | 2340 // RC_TRACE macro has an embedded ResourceMark |
| 2341 RC_TRACE(0x01000000, | |
| 2342 ("Found evol dependency of nmethod %s.%s(%s) compile_id=%d on method %s.%s(%s)", | |
|
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2343 _method->method_holder()->external_name(), |
| 0 | 2344 _method->name()->as_C_string(), |
| 2345 _method->signature()->as_C_string(), compile_id(), | |
|
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2346 method->method_holder()->external_name(), |
| 0 | 2347 method->name()->as_C_string(), |
| 2348 method->signature()->as_C_string())); | |
| 2349 if (TraceDependencies || LogCompilation) | |
| 2350 deps.log_dependency(dependee); | |
| 2351 return true; | |
| 2352 } | |
| 2353 } | |
| 2354 } | |
| 2355 } | |
| 2356 return false; | |
| 2357 } | |
| 2358 | |
| 2359 // Called from mark_for_deoptimization, when dependee is invalidated. | |
|
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2360 bool nmethod::is_dependent_on_method(Method* dependee) { |
| 0 | 2361 for (Dependencies::DepStream deps(this); deps.next(); ) { |
| 2362 if (deps.type() != Dependencies::evol_method) | |
| 2363 continue; | |
|
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2364 Method* method = deps.method_argument(0); |
| 0 | 2365 if (method == dependee) return true; |
| 2366 } | |
| 2367 return false; | |
| 2368 } | |
| 2369 | |
| 2370 | |
| 2371 bool nmethod::is_patchable_at(address instr_addr) { | |
| 1748 | 2372 assert(insts_contains(instr_addr), "wrong nmethod used"); |
| 0 | 2373 if (is_zombie()) { |
| 2374 // a zombie may never be patched | |
| 2375 return false; | |
| 2376 } | |
| 2377 return true; | |
| 2378 } | |
| 2379 | |
| 2380 | |
| 2381 address nmethod::continuation_for_implicit_exception(address pc) { | |
| 2382 // Exception happened outside inline-cache check code => we are inside | |
| 2383 // an active nmethod => use cpc to determine a return address | |
| 1748 | 2384 int exception_offset = pc - code_begin(); |
| 0 | 2385 int cont_offset = ImplicitExceptionTable(this).at( exception_offset ); |
| 2386 #ifdef ASSERT | |
| 2387 if (cont_offset == 0) { | |
| 2388 Thread* thread = ThreadLocalStorage::get_thread_slow(); | |
| 2389 ResetNoHandleMark rnm; // Might be called from LEAF/QUICK ENTRY | |
| 2390 HandleMark hm(thread); | |
| 2391 ResourceMark rm(thread); | |
| 2392 CodeBlob* cb = CodeCache::find_blob(pc); | |
| 2393 assert(cb != NULL && cb == this, ""); | |
| 2394 tty->print_cr("implicit exception happened at " INTPTR_FORMAT, pc); | |
| 2395 print(); | |
| 2396 method()->print_codes(); | |
| 2397 print_code(); | |
| 2398 print_pcs(); | |
| 2399 } | |
| 2400 #endif | |
| 1250 | 2401 if (cont_offset == 0) { |
| 2402 // Let the normal error handling report the exception | |
| 2403 return NULL; | |
| 2404 } | |
| 1748 | 2405 return code_begin() + cont_offset; |
| 0 | 2406 } |
| 2407 | |
| 2408 | |
| 2409 | |
| 2410 void nmethod_init() { | |
| 2411 // make sure you didn't forget to adjust the filler fields | |
| 2412 assert(sizeof(nmethod) % oopSize == 0, "nmethod size must be multiple of a word"); | |
| 2413 } | |
| 2414 | |
| 2415 | |
| 2416 //------------------------------------------------------------------------------------------- | |
| 2417 | |
| 2418 | |
| 2419 // QQQ might we make this work from a frame?? | |
| 2420 nmethodLocker::nmethodLocker(address pc) { | |
| 2421 CodeBlob* cb = CodeCache::find_blob(pc); | |
| 2422 guarantee(cb != NULL && cb->is_nmethod(), "bad pc for a nmethod found"); | |
| 2423 _nm = (nmethod*)cb; | |
| 2424 lock_nmethod(_nm); | |
| 2425 } | |
| 2426 | |
|
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|
2427 // Only JvmtiDeferredEvent::compiled_method_unload_event() |
|
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|
2428 // should pass zombie_ok == true. |
|
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|
2429 void nmethodLocker::lock_nmethod(nmethod* nm, bool zombie_ok) { |
| 0 | 2430 if (nm == NULL) return; |
| 2431 Atomic::inc(&nm->_lock_count); | |
|
2342
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|
2432 guarantee(zombie_ok || !nm->is_zombie(), "cannot lock a zombie method"); |
| 0 | 2433 } |
| 2434 | |
| 2435 void nmethodLocker::unlock_nmethod(nmethod* nm) { | |
| 2436 if (nm == NULL) return; | |
| 2437 Atomic::dec(&nm->_lock_count); | |
| 2438 guarantee(nm->_lock_count >= 0, "unmatched nmethod lock/unlock"); | |
| 2439 } | |
| 2440 | |
| 1204 | 2441 |
| 2442 // ----------------------------------------------------------------------------- | |
| 2443 // nmethod::get_deopt_original_pc | |
| 2444 // | |
| 2445 // Return the original PC for the given PC if: | |
| 2446 // (a) the given PC belongs to a nmethod and | |
| 2447 // (b) it is a deopt PC | |
| 2448 address nmethod::get_deopt_original_pc(const frame* fr) { | |
| 2449 if (fr->cb() == NULL) return NULL; | |
| 2450 | |
| 2451 nmethod* nm = fr->cb()->as_nmethod_or_null(); | |
| 2452 if (nm != NULL && nm->is_deopt_pc(fr->pc())) | |
| 2453 return nm->get_original_pc(fr); | |
| 2454 | |
| 2455 return NULL; | |
| 0 | 2456 } |
| 2457 | |
| 2458 | |
| 2459 // ----------------------------------------------------------------------------- | |
|
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2460 // MethodHandle |
|
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2461 |
|
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2462 bool nmethod::is_method_handle_return(address return_pc) { |
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2463 if (!has_method_handle_invokes()) return false; |
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2464 PcDesc* pd = pc_desc_at(return_pc); |
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2465 if (pd == NULL) |
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2466 return false; |
|
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2467 return pd->is_method_handle_invoke(); |
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2468 } |
|
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2469 |
|
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2470 |
|
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2471 // ----------------------------------------------------------------------------- |
| 0 | 2472 // Verification |
| 2473 | |
|
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2474 class VerifyOopsClosure: public OopClosure { |
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2475 nmethod* _nm; |
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2476 bool _ok; |
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2477 public: |
|
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2478 VerifyOopsClosure(nmethod* nm) : _nm(nm), _ok(true) { } |
|
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|
2479 bool ok() { return _ok; } |
|
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|
2480 virtual void do_oop(oop* p) { |
|
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|
2481 if ((*p) == NULL || (*p)->is_oop()) return; |
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2482 if (_ok) { |
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|
2483 _nm->print_nmethod(true); |
|
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2484 _ok = false; |
|
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|
2485 } |
|
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|
2486 tty->print_cr("*** non-oop "PTR_FORMAT" found at "PTR_FORMAT" (offset %d)", |
|
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|
2487 (void *)(*p), (intptr_t)p, (int)((intptr_t)p - (intptr_t)_nm)); |
|
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|
2488 } |
|
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|
2489 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
|
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|
2490 }; |
|
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|
2491 |
| 0 | 2492 void nmethod::verify() { |
| 2493 | |
| 2494 // Hmm. OSR methods can be deopted but not marked as zombie or not_entrant | |
| 2495 // seems odd. | |
| 2496 | |
| 2497 if( is_zombie() || is_not_entrant() ) | |
| 2498 return; | |
| 2499 | |
| 2500 // Make sure all the entry points are correctly aligned for patching. | |
| 2501 NativeJump::check_verified_entry_alignment(entry_point(), verified_entry_point()); | |
| 2502 | |
|
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|
2503 // assert(method()->is_oop(), "must be valid"); |
| 0 | 2504 |
| 2505 ResourceMark rm; | |
| 2506 | |
| 2507 if (!CodeCache::contains(this)) { | |
|
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|
2508 fatal(err_msg("nmethod at " INTPTR_FORMAT " not in zone", this)); |
| 0 | 2509 } |
| 2510 | |
| 2511 if(is_native_method() ) | |
| 2512 return; | |
| 2513 | |
| 2514 nmethod* nm = CodeCache::find_nmethod(verified_entry_point()); | |
| 2515 if (nm != this) { | |
|
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|
2516 fatal(err_msg("findNMethod did not find this nmethod (" INTPTR_FORMAT ")", |
|
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|
2517 this)); |
| 0 | 2518 } |
| 2519 | |
| 2520 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
| 2521 if (! p->verify(this)) { | |
| 2522 tty->print_cr("\t\tin nmethod at " INTPTR_FORMAT " (pcs)", this); | |
| 2523 } | |
| 2524 } | |
| 2525 | |
|
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|
2526 VerifyOopsClosure voc(this); |
|
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|
2527 oops_do(&voc); |
|
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|
2528 assert(voc.ok(), "embedded oops must be OK"); |
|
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|
2529 verify_scavenge_root_oops(); |
|
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|
2530 |
| 0 | 2531 verify_scopes(); |
| 2532 } | |
| 2533 | |
| 2534 | |
| 2535 void nmethod::verify_interrupt_point(address call_site) { | |
| 2536 // This code does not work in release mode since | |
| 2537 // owns_lock only is available in debug mode. | |
| 2538 CompiledIC* ic = NULL; | |
| 2539 Thread *cur = Thread::current(); | |
| 2540 if (CompiledIC_lock->owner() == cur || | |
| 2541 ((cur->is_VM_thread() || cur->is_ConcurrentGC_thread()) && | |
| 2542 SafepointSynchronize::is_at_safepoint())) { | |
|
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|
2543 ic = CompiledIC_at(this, call_site); |
| 0 | 2544 CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops()); |
| 2545 } else { | |
| 2546 MutexLocker ml_verify (CompiledIC_lock); | |
|
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|
2547 ic = CompiledIC_at(this, call_site); |
| 0 | 2548 } |
| 2549 PcDesc* pd = pc_desc_at(ic->end_of_call()); | |
| 2550 assert(pd != NULL, "PcDesc must exist"); | |
| 2551 for (ScopeDesc* sd = new ScopeDesc(this, pd->scope_decode_offset(), | |
| 9707 | 2552 pd->obj_decode_offset(), pd->should_reexecute(), pd->rethrow_exception(), |
|
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|
2553 pd->return_oop()); |
| 0 | 2554 !sd->is_top(); sd = sd->sender()) { |
| 2555 sd->verify(); | |
| 2556 } | |
| 2557 } | |
| 2558 | |
| 2559 void nmethod::verify_scopes() { | |
| 2560 if( !method() ) return; // Runtime stubs have no scope | |
| 2561 if (method()->is_native()) return; // Ignore stub methods. | |
| 2562 // iterate through all interrupt point | |
| 2563 // and verify the debug information is valid. | |
| 2564 RelocIterator iter((nmethod*)this); | |
| 2565 while (iter.next()) { | |
| 2566 address stub = NULL; | |
| 2567 switch (iter.type()) { | |
| 2568 case relocInfo::virtual_call_type: | |
| 2569 verify_interrupt_point(iter.addr()); | |
| 2570 break; | |
| 2571 case relocInfo::opt_virtual_call_type: | |
| 2572 stub = iter.opt_virtual_call_reloc()->static_stub(); | |
| 2573 verify_interrupt_point(iter.addr()); | |
| 2574 break; | |
| 2575 case relocInfo::static_call_type: | |
| 2576 stub = iter.static_call_reloc()->static_stub(); | |
| 2577 //verify_interrupt_point(iter.addr()); | |
| 2578 break; | |
| 2579 case relocInfo::runtime_call_type: | |
| 2580 address destination = iter.reloc()->value(); | |
| 2581 // Right now there is no way to find out which entries support | |
| 2582 // an interrupt point. It would be nice if we had this | |
| 2583 // information in a table. | |
| 2584 break; | |
| 2585 } | |
| 2586 assert(stub == NULL || stub_contains(stub), "static call stub outside stub section"); | |
| 2587 } | |
| 2588 } | |
| 2589 | |
| 2590 | |
| 2591 // ----------------------------------------------------------------------------- | |
| 2592 // Non-product code | |
| 2593 #ifndef PRODUCT | |
| 2594 | |
|
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2595 class DebugScavengeRoot: public OopClosure { |
|
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|
2596 nmethod* _nm; |
|
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|
2597 bool _ok; |
|
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|
2598 public: |
|
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|
2599 DebugScavengeRoot(nmethod* nm) : _nm(nm), _ok(true) { } |
|
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|
2600 bool ok() { return _ok; } |
|
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|
2601 virtual void do_oop(oop* p) { |
|
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|
2602 if ((*p) == NULL || !(*p)->is_scavengable()) return; |
|
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|
2603 if (_ok) { |
|
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|
2604 _nm->print_nmethod(true); |
|
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|
2605 _ok = false; |
|
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|
2606 } |
|
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diff
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|
2607 tty->print_cr("*** scavengable oop "PTR_FORMAT" found at "PTR_FORMAT" (offset %d)", |
|
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|
2608 (void *)(*p), (intptr_t)p, (int)((intptr_t)p - (intptr_t)_nm)); |
|
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|
2609 (*p)->print(); |
|
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diff
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|
2610 } |
|
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|
2611 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
|
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|
2612 }; |
| 0 | 2613 |
|
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|
2614 void nmethod::verify_scavenge_root_oops() { |
|
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|
2615 if (!on_scavenge_root_list()) { |
|
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|
2616 // Actually look inside, to verify the claim that it's clean. |
|
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|
2617 DebugScavengeRoot debug_scavenge_root(this); |
|
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|
2618 oops_do(&debug_scavenge_root); |
|
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|
2619 if (!debug_scavenge_root.ok()) |
|
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diff
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|
2620 fatal("found an unadvertised bad scavengable oop in the code cache"); |
| 0 | 2621 } |
|
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|
2622 assert(scavenge_root_not_marked(), ""); |
| 0 | 2623 } |
| 2624 | |
|
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|
2625 #endif // PRODUCT |
| 0 | 2626 |
| 2627 // Printing operations | |
| 2628 | |
| 2629 void nmethod::print() const { | |
| 2630 ResourceMark rm; | |
| 2631 ttyLocker ttyl; // keep the following output all in one block | |
| 2632 | |
|
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
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2376
diff
changeset
|
2633 tty->print("Compiled method "); |
| 0 | 2634 |
| 2635 if (is_compiled_by_c1()) { | |
| 2636 tty->print("(c1) "); | |
| 2637 } else if (is_compiled_by_c2()) { | |
| 2638 tty->print("(c2) "); | |
| 1692 | 2639 } else if (is_compiled_by_shark()) { |
| 2640 tty->print("(shark) "); | |
| 9707 | 2641 } else if (is_compiled_by_graal()) { |
| 2642 tty->print("(Graal) "); | |
| 0 | 2643 } else { |
| 2644 tty->print("(nm) "); | |
| 2645 } | |
| 2646 | |
|
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
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2376
diff
changeset
|
2647 print_on(tty, NULL); |
|
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
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2376
diff
changeset
|
2648 |
| 0 | 2649 if (WizardMode) { |
| 2650 tty->print("((nmethod*) "INTPTR_FORMAT ") ", this); | |
| 2651 tty->print(" for method " INTPTR_FORMAT , (address)method()); | |
| 2652 tty->print(" { "); | |
| 2653 if (is_in_use()) tty->print("in_use "); | |
| 2654 if (is_not_entrant()) tty->print("not_entrant "); | |
| 2655 if (is_zombie()) tty->print("zombie "); | |
| 2656 if (is_unloaded()) tty->print("unloaded "); | |
|
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|
2657 if (on_scavenge_root_list()) tty->print("scavenge_root "); |
| 0 | 2658 tty->print_cr("}:"); |
| 2659 } | |
| 2660 if (size () > 0) tty->print_cr(" total in heap [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
| 2661 (address)this, | |
| 2662 (address)this + size(), | |
| 2663 size()); | |
| 2664 if (relocation_size () > 0) tty->print_cr(" relocation [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
| 2665 relocation_begin(), | |
| 2666 relocation_end(), | |
| 2667 relocation_size()); | |
|
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1748
diff
changeset
|
2668 if (consts_size () > 0) tty->print_cr(" constants [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
|
0878d7bae69f
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1748
diff
changeset
|
2669 consts_begin(), |
|
0878d7bae69f
6961697: move nmethod constants section before instruction section
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1748
diff
changeset
|
2670 consts_end(), |
|
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diff
changeset
|
2671 consts_size()); |
| 1748 | 2672 if (insts_size () > 0) tty->print_cr(" main code [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
| 2673 insts_begin(), | |
| 2674 insts_end(), | |
| 2675 insts_size()); | |
| 0 | 2676 if (stub_size () > 0) tty->print_cr(" stub code [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
| 2677 stub_begin(), | |
| 2678 stub_end(), | |
| 2679 stub_size()); | |
|
1563
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diff
changeset
|
2680 if (oops_size () > 0) tty->print_cr(" oops [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
|
1a5913bf5e19
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diff
changeset
|
2681 oops_begin(), |
|
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
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1538
diff
changeset
|
2682 oops_end(), |
|
1a5913bf5e19
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diff
changeset
|
2683 oops_size()); |
|
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|
2684 if (metadata_size () > 0) tty->print_cr(" metadata [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
|
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|
2685 metadata_begin(), |
|
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|
2686 metadata_end(), |
|
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|
2687 metadata_size()); |
| 0 | 2688 if (scopes_data_size () > 0) tty->print_cr(" scopes data [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
| 2689 scopes_data_begin(), | |
| 2690 scopes_data_end(), | |
| 2691 scopes_data_size()); | |
| 2692 if (scopes_pcs_size () > 0) tty->print_cr(" scopes pcs [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
| 2693 scopes_pcs_begin(), | |
| 2694 scopes_pcs_end(), | |
| 2695 scopes_pcs_size()); | |
| 2696 if (dependencies_size () > 0) tty->print_cr(" dependencies [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
| 2697 dependencies_begin(), | |
| 2698 dependencies_end(), | |
| 2699 dependencies_size()); | |
| 2700 if (handler_table_size() > 0) tty->print_cr(" handler table [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
| 2701 handler_table_begin(), | |
| 2702 handler_table_end(), | |
| 2703 handler_table_size()); | |
| 2704 if (nul_chk_table_size() > 0) tty->print_cr(" nul chk table [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
| 2705 nul_chk_table_begin(), | |
| 2706 nul_chk_table_end(), | |
| 2707 nul_chk_table_size()); | |
| 2708 } | |
| 2709 | |
|
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|
2710 void nmethod::print_code() { |
|
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|
2711 HandleMark hm; |
|
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|
2712 ResourceMark m; |
|
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|
2713 Disassembler::decode(this); |
|
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|
2714 } |
|
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|
2715 |
|
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|
2716 |
|
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|
2717 #ifndef PRODUCT |
| 0 | 2718 |
| 2719 void nmethod::print_scopes() { | |
| 2720 // Find the first pc desc for all scopes in the code and print it. | |
| 2721 ResourceMark rm; | |
| 2722 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
| 2723 if (p->scope_decode_offset() == DebugInformationRecorder::serialized_null) | |
| 2724 continue; | |
| 2725 | |
| 2726 ScopeDesc* sd = scope_desc_at(p->real_pc(this)); | |
| 2727 sd->print_on(tty, p); | |
| 2728 } | |
| 2729 } | |
| 2730 | |
| 2731 void nmethod::print_dependencies() { | |
| 2732 ResourceMark rm; | |
| 2733 ttyLocker ttyl; // keep the following output all in one block | |
| 2734 tty->print_cr("Dependencies:"); | |
| 2735 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
| 2736 deps.print_dependency(); | |
|
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6266
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|
2737 Klass* ctxk = deps.context_type(); |
| 0 | 2738 if (ctxk != NULL) { |
| 6983 | 2739 if (ctxk->oop_is_instance() && ((InstanceKlass*)ctxk)->is_dependent_nmethod(this)) { |
| 2740 tty->print_cr(" [nmethod<=klass]%s", ctxk->external_name()); | |
| 0 | 2741 } |
| 2742 } | |
| 2743 deps.log_dependency(); // put it into the xml log also | |
| 2744 } | |
| 2745 } | |
| 2746 | |
| 2747 | |
| 2748 void nmethod::print_relocations() { | |
| 2749 ResourceMark m; // in case methods get printed via the debugger | |
| 2750 tty->print_cr("relocations:"); | |
| 2751 RelocIterator iter(this); | |
| 2752 iter.print(); | |
| 2753 if (UseRelocIndex) { | |
| 2754 jint* index_end = (jint*)relocation_end() - 1; | |
| 2755 jint index_size = *index_end; | |
| 2756 jint* index_start = (jint*)( (address)index_end - index_size ); | |
| 2757 tty->print_cr(" index @" INTPTR_FORMAT ": index_size=%d", index_start, index_size); | |
| 2758 if (index_size > 0) { | |
| 2759 jint* ip; | |
| 2760 for (ip = index_start; ip+2 <= index_end; ip += 2) | |
| 2761 tty->print_cr(" (%d %d) addr=" INTPTR_FORMAT " @" INTPTR_FORMAT, | |
| 2762 ip[0], | |
| 2763 ip[1], | |
| 2764 header_end()+ip[0], | |
| 2765 relocation_begin()-1+ip[1]); | |
| 2766 for (; ip < index_end; ip++) | |
| 2767 tty->print_cr(" (%d ?)", ip[0]); | |
|
10973
ef57c43512d6
8014431: cleanup warnings indicated by the -Wunused-value compiler option on linux
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diff
changeset
|
2768 tty->print_cr(" @" INTPTR_FORMAT ": index_size=%d", ip, *ip); |
|
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diff
changeset
|
2769 ip++; |
| 0 | 2770 tty->print_cr("reloc_end @" INTPTR_FORMAT ":", ip); |
| 2771 } | |
| 2772 } | |
| 2773 } | |
| 2774 | |
| 2775 | |
| 2776 void nmethod::print_pcs() { | |
| 2777 ResourceMark m; // in case methods get printed via debugger | |
| 2778 tty->print_cr("pc-bytecode offsets:"); | |
| 2779 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
| 2780 p->print(this); | |
| 2781 } | |
| 2782 } | |
| 2783 | |
|
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
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30
diff
changeset
|
2784 #endif // PRODUCT |
| 0 | 2785 |
| 2786 const char* nmethod::reloc_string_for(u_char* begin, u_char* end) { | |
| 2787 RelocIterator iter(this, begin, end); | |
| 2788 bool have_one = false; | |
| 2789 while (iter.next()) { | |
| 2790 have_one = true; | |
| 2791 switch (iter.type()) { | |
| 2792 case relocInfo::none: return "no_reloc"; | |
| 2793 case relocInfo::oop_type: { | |
| 2794 stringStream st; | |
| 2795 oop_Relocation* r = iter.oop_reloc(); | |
| 2796 oop obj = r->oop_value(); | |
| 2797 st.print("oop("); | |
| 2798 if (obj == NULL) st.print("NULL"); | |
| 2799 else obj->print_value_on(&st); | |
| 2800 st.print(")"); | |
| 2801 return st.as_string(); | |
| 2802 } | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6266
diff
changeset
|
2803 case relocInfo::metadata_type: { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2804 stringStream st; |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
6266
diff
changeset
|
2805 metadata_Relocation* r = iter.metadata_reloc(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2806 Metadata* obj = r->metadata_value(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2807 st.print("metadata("); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
2808 if (obj == NULL) st.print("NULL"); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6266
diff
changeset
|
2809 else obj->print_value_on(&st); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2810 st.print(")"); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
2811 return st.as_string(); |
|
da91efe96a93
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diff
changeset
|
2812 } |
| 0 | 2813 case relocInfo::virtual_call_type: return "virtual_call"; |
| 2814 case relocInfo::opt_virtual_call_type: return "optimized virtual_call"; | |
| 2815 case relocInfo::static_call_type: return "static_call"; | |
| 2816 case relocInfo::static_stub_type: return "static_stub"; | |
| 2817 case relocInfo::runtime_call_type: return "runtime_call"; | |
| 2818 case relocInfo::external_word_type: return "external_word"; | |
| 2819 case relocInfo::internal_word_type: return "internal_word"; | |
| 2820 case relocInfo::section_word_type: return "section_word"; | |
| 2821 case relocInfo::poll_type: return "poll"; | |
| 2822 case relocInfo::poll_return_type: return "poll_return"; | |
| 2823 case relocInfo::type_mask: return "type_bit_mask"; | |
| 2824 } | |
| 2825 } | |
| 2826 return have_one ? "other" : NULL; | |
| 2827 } | |
| 2828 | |
| 2829 // Return a the last scope in (begin..end] | |
| 2830 ScopeDesc* nmethod::scope_desc_in(address begin, address end) { | |
| 2831 PcDesc* p = pc_desc_near(begin+1); | |
| 2832 if (p != NULL && p->real_pc(this) <= end) { | |
| 2833 return new ScopeDesc(this, p->scope_decode_offset(), | |
| 9707 | 2834 p->obj_decode_offset(), p->should_reexecute(), p->rethrow_exception(), |
|
1253
f70b0d9ab095
6910618: C2: Error: assert(d->is_oop(),"JVM_ArrayCopy: dst not an oop")
kvn
parents:
1250
diff
changeset
|
2835 p->return_oop()); |
| 0 | 2836 } |
| 2837 return NULL; | |
| 2838 } | |
| 2839 | |
|
6796
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
parents:
6792
diff
changeset
|
2840 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
|
2841 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
|
2842 if (block_begin == verified_entry_point()) stream->print_cr("[Verified Entry Point]"); |
| 9707 | 2843 if (GRAAL_ONLY(_exception_offset >= 0 &&) block_begin == exception_begin()) stream->print_cr("[Exception Handler]"); |
|
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2844 if (block_begin == stub_begin()) stream->print_cr("[Stub Code]"); |
| 9707 | 2845 if (GRAAL_ONLY(_deoptimize_offset >= 0 &&) block_begin == deopt_handler_begin()) stream->print_cr("[Deopt Handler Code]"); |
|
1691
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
twisti
parents:
1644
diff
changeset
|
2846 |
|
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
twisti
parents:
1644
diff
changeset
|
2847 if (has_method_handle_invokes()) |
|
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
twisti
parents:
1644
diff
changeset
|
2848 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
|
2849 |
|
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2850 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
|
2851 |
|
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2852 if (block_begin == entry_point()) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2853 methodHandle m = method(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2854 if (m.not_null()) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2855 stream->print(" # "); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2856 m->print_value_on(stream); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2857 stream->cr(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2858 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2859 if (m.not_null() && !is_osr_method()) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2860 ResourceMark rm; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2861 int sizeargs = m->size_of_parameters(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2862 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
|
2863 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, sizeargs); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2864 { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2865 int sig_index = 0; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2866 if (!m->is_static()) |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2867 sig_bt[sig_index++] = T_OBJECT; // 'this' |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2868 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
|
2869 BasicType t = ss.type(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2870 sig_bt[sig_index++] = t; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2871 if (type2size[t] == 2) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2872 sig_bt[sig_index++] = T_VOID; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2873 } else { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2874 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
|
2875 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2876 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2877 assert(sig_index == sizeargs, ""); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2878 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2879 const char* spname = "sp"; // make arch-specific? |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2880 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
|
2881 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
|
2882 int tab1 = 14, tab2 = 24; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2883 int sig_index = 0; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2884 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
|
2885 bool did_old_sp = false; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2886 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
|
2887 bool at_this = (arg_index == -1); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2888 bool at_old_sp = false; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2889 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
|
2890 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
|
2891 if (at_this) |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2892 stream->print(" # this: "); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2893 else |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2894 stream->print(" # parm%d: ", arg_index); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2895 stream->move_to(tab1); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2896 VMReg fst = regs[sig_index].first(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2897 VMReg snd = regs[sig_index].second(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2898 if (fst->is_reg()) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2899 stream->print("%s", fst->name()); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2900 if (snd->is_valid()) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2901 stream->print(":%s", snd->name()); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2902 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2903 } else if (fst->is_stack()) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2904 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
|
2905 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
|
2906 stream->print("[%s+0x%x]", spname, offset); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2907 } else { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2908 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
|
2909 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2910 stream->print(" "); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2911 stream->move_to(tab2); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2912 stream->print("= "); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2913 if (at_this) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2914 m->method_holder()->print_value_on(stream); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2915 } else { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2916 bool did_name = false; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2917 if (!at_this && ss.is_object()) { |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2142
diff
changeset
|
2918 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
|
2919 if (name != NULL) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2920 name->print_value_on(stream); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2921 did_name = true; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2922 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2923 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2924 if (!did_name) |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2925 stream->print("%s", type2name(t)); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2926 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2927 if (at_old_sp) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2928 stream->print(" (%s of caller)", spname); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2929 did_old_sp = true; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2930 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2931 stream->cr(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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1141
diff
changeset
|
2932 sig_index += type2size[t]; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2933 arg_index += 1; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2934 if (!at_this) ss.next(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2935 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
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parents:
1141
diff
changeset
|
2936 if (!did_old_sp) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2937 stream->print(" # "); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2938 stream->move_to(tab1); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2939 stream->print("[%s+0x%x]", spname, stack_slot_offset); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2940 stream->print(" (%s of caller)", spname); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2941 stream->cr(); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2942 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2943 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2944 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2945 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2946 |
| 0 | 2947 void nmethod::print_code_comment_on(outputStream* st, int column, u_char* begin, u_char* end) { |
| 2948 // First, find an oopmap in (begin, end]. | |
| 2949 // We use the odd half-closed interval so that oop maps and scope descs | |
| 2950 // which are tied to the byte after a call are printed with the call itself. | |
| 1748 | 2951 address base = code_begin(); |
| 0 | 2952 OopMapSet* oms = oop_maps(); |
| 2953 if (oms != NULL) { | |
| 2954 for (int i = 0, imax = oms->size(); i < imax; i++) { | |
| 2955 OopMap* om = oms->at(i); | |
| 2956 address pc = base + om->offset(); | |
| 2957 if (pc > begin) { | |
| 2958 if (pc <= end) { | |
|
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
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parents:
30
diff
changeset
|
2959 st->move_to(column); |
|
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
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30
diff
changeset
|
2960 st->print("; "); |
|
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2961 om->print_on(st); |
| 0 | 2962 } |
| 2963 break; | |
| 2964 } | |
| 2965 } | |
| 2966 } | |
|
100
c7c777385a15
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30
diff
changeset
|
2967 |
|
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
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30
diff
changeset
|
2968 // Print any debug info present at this pc. |
| 0 | 2969 ScopeDesc* sd = scope_desc_in(begin, end); |
| 2970 if (sd != NULL) { | |
|
100
c7c777385a15
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parents:
30
diff
changeset
|
2971 st->move_to(column); |
| 0 | 2972 if (sd->bci() == SynchronizationEntryBCI) { |
| 2973 st->print(";*synchronization entry"); | |
| 2974 } else { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2975 if (sd->method() == NULL) { |
|
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2976 st->print("method is NULL"); |
| 0 | 2977 } else if (sd->method()->is_native()) { |
|
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2978 st->print("method is native"); |
| 0 | 2979 } else { |
| 2142 | 2980 Bytecodes::Code bc = sd->method()->java_code_at(sd->bci()); |
| 0 | 2981 st->print(";*%s", Bytecodes::name(bc)); |
| 2982 switch (bc) { | |
| 2983 case Bytecodes::_invokevirtual: | |
| 2984 case Bytecodes::_invokespecial: | |
| 2985 case Bytecodes::_invokestatic: | |
| 2986 case Bytecodes::_invokeinterface: | |
| 2987 { | |
| 2142 | 2988 Bytecode_invoke invoke(sd->method(), sd->bci()); |
| 0 | 2989 st->print(" "); |
| 2142 | 2990 if (invoke.name() != NULL) |
| 2991 invoke.name()->print_symbol_on(st); | |
| 0 | 2992 else |
| 2993 st->print("<UNKNOWN>"); | |
| 2994 break; | |
| 2995 } | |
| 2996 case Bytecodes::_getfield: | |
| 2997 case Bytecodes::_putfield: | |
| 2998 case Bytecodes::_getstatic: | |
| 2999 case Bytecodes::_putstatic: | |
| 3000 { | |
| 2142 | 3001 Bytecode_field field(sd->method(), sd->bci()); |
| 0 | 3002 st->print(" "); |
| 2142 | 3003 if (field.name() != NULL) |
| 3004 field.name()->print_symbol_on(st); | |
| 0 | 3005 else |
| 3006 st->print("<UNKNOWN>"); | |
| 3007 } | |
| 3008 } | |
| 3009 } | |
| 3010 } | |
|
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
3011 |
| 0 | 3012 // Print all scopes |
| 3013 for (;sd != NULL; sd = sd->sender()) { | |
|
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
3014 st->move_to(column); |
| 0 | 3015 st->print("; -"); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3016 if (sd->method() == NULL) { |
|
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
3017 st->print("method is NULL"); |
| 0 | 3018 } else { |
| 3019 sd->method()->print_short_name(st); | |
| 3020 } | |
| 3021 int lineno = sd->method()->line_number_from_bci(sd->bci()); | |
| 3022 if (lineno != -1) { | |
| 3023 st->print("@%d (line %d)", sd->bci(), lineno); | |
| 3024 } else { | |
| 3025 st->print("@%d", sd->bci()); | |
| 3026 } | |
| 3027 st->cr(); | |
| 3028 } | |
| 3029 } | |
| 3030 | |
| 3031 // Print relocation information | |
| 3032 const char* str = reloc_string_for(begin, end); | |
| 3033 if (str != NULL) { | |
| 3034 if (sd != NULL) st->cr(); | |
|
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
3035 st->move_to(column); |
| 0 | 3036 st->print("; {%s}", str); |
| 3037 } | |
| 1748 | 3038 int cont_offset = ImplicitExceptionTable(this).at(begin - code_begin()); |
| 0 | 3039 if (cont_offset != 0) { |
|
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
3040 st->move_to(column); |
| 1748 | 3041 st->print("; implicit exception: dispatches to " INTPTR_FORMAT, code_begin() + cont_offset); |
| 0 | 3042 } |
| 3043 | |
| 3044 } | |
| 3045 | |
|
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
3046 #ifndef PRODUCT |
|
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
3047 |
| 0 | 3048 void nmethod::print_value_on(outputStream* st) const { |
|
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2376
diff
changeset
|
3049 st->print("nmethod"); |
|
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2376
diff
changeset
|
3050 print_on(st, NULL); |
| 0 | 3051 } |
| 3052 | |
| 3053 void nmethod::print_calls(outputStream* st) { | |
| 3054 RelocIterator iter(this); | |
| 3055 while (iter.next()) { | |
| 3056 switch (iter.type()) { | |
| 3057 case relocInfo::virtual_call_type: | |
| 3058 case relocInfo::opt_virtual_call_type: { | |
| 3059 VerifyMutexLocker mc(CompiledIC_lock); | |
| 3060 CompiledIC_at(iter.reloc())->print(); | |
| 3061 break; | |
| 3062 } | |
| 3063 case relocInfo::static_call_type: | |
| 3064 st->print_cr("Static call at " INTPTR_FORMAT, iter.reloc()->addr()); | |
| 3065 compiledStaticCall_at(iter.reloc())->print(); | |
| 3066 break; | |
| 3067 } | |
| 3068 } | |
| 3069 } | |
| 3070 | |
| 3071 void nmethod::print_handler_table() { | |
| 3072 ExceptionHandlerTable(this).print(); | |
| 3073 } | |
| 3074 | |
| 3075 void nmethod::print_nul_chk_table() { | |
| 1748 | 3076 ImplicitExceptionTable(this).print(code_begin()); |
| 0 | 3077 } |
| 3078 | |
| 9707 | 3079 #endif // PRODUCT |
| 3080 | |
| 0 | 3081 void nmethod::print_statistics() { |
| 3082 ttyLocker ttyl; | |
| 3083 if (xtty != NULL) xtty->head("statistics type='nmethod'"); | |
|
12675
7fedc59e2cdc
Split code cache stats for the different compilers
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12414
diff
changeset
|
3084 native_nmethod_stats.print_native_nmethod_stats(); |
|
7fedc59e2cdc
Split code cache stats for the different compilers
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12414
diff
changeset
|
3085 #ifdef COMPILER1 |
|
7fedc59e2cdc
Split code cache stats for the different compilers
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12414
diff
changeset
|
3086 c1_java_nmethod_stats.print_nmethod_stats("C1"); |
|
7fedc59e2cdc
Split code cache stats for the different compilers
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12414
diff
changeset
|
3087 #endif |
|
7fedc59e2cdc
Split code cache stats for the different compilers
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12414
diff
changeset
|
3088 #ifdef COMPILER2 |
|
7fedc59e2cdc
Split code cache stats for the different compilers
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12414
diff
changeset
|
3089 c2_java_nmethod_stats.print_nmethod_stats("C2"); |
|
7fedc59e2cdc
Split code cache stats for the different compilers
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12414
diff
changeset
|
3090 #endif |
|
7fedc59e2cdc
Split code cache stats for the different compilers
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12414
diff
changeset
|
3091 #ifdef GRAAL |
|
7fedc59e2cdc
Split code cache stats for the different compilers
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12414
diff
changeset
|
3092 graal_java_nmethod_stats.print_nmethod_stats("Graal"); |
|
7fedc59e2cdc
Split code cache stats for the different compilers
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12414
diff
changeset
|
3093 #endif |
|
12758
ca33948fb804
nmethod.cpp: s/unknwon/unknown/
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12704
diff
changeset
|
3094 unknown_java_nmethod_stats.print_nmethod_stats("Unknown"); |
| 0 | 3095 DebugInformationRecorder::print_statistics(); |
|
12675
7fedc59e2cdc
Split code cache stats for the different compilers
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12414
diff
changeset
|
3096 pc_nmethod_stats.print_pc_stats(); |
| 0 | 3097 Dependencies::print_statistics(); |
| 3098 if (xtty != NULL) xtty->tail("statistics"); | |
| 3099 } |