Mercurial > hg > truffle
annotate src/share/vm/code/nmethod.cpp @ 14714:b602356a9cfc
additional canonicalizers for accesses and value nodes (improves number of implicit null checks)
author | Lukas Stadler <lukas.stadler@oracle.com> |
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date | Thu, 20 Mar 2014 17:15:36 +0100 |
parents | b51e29501f30 |
children | 92aa6797d639 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "code/codeCache.hpp" | |
27 #include "code/compiledIC.hpp" | |
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28 #include "code/dependencies.hpp" |
1972 | 29 #include "code/nmethod.hpp" |
30 #include "code/scopeDesc.hpp" | |
31 #include "compiler/abstractCompiler.hpp" | |
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32 #include "compiler/compileBroker.hpp" |
1972 | 33 #include "compiler/compileLog.hpp" |
34 #include "compiler/compilerOracle.hpp" | |
35 #include "compiler/disassembler.hpp" | |
36 #include "interpreter/bytecode.hpp" | |
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37 #include "oops/methodData.hpp" |
1972 | 38 #include "prims/jvmtiRedefineClassesTrace.hpp" |
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39 #include "prims/jvmtiImpl.hpp" |
1972 | 40 #include "runtime/sharedRuntime.hpp" |
41 #include "runtime/sweeper.hpp" | |
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42 #include "utilities/resourceHash.hpp" |
1972 | 43 #include "utilities/dtrace.hpp" |
44 #include "utilities/events.hpp" | |
45 #include "utilities/xmlstream.hpp" | |
46 #ifdef SHARK | |
47 #include "shark/sharkCompiler.hpp" | |
48 #endif | |
9707 | 49 #ifdef GRAAL |
50 #include "graal/graalJavaAccess.hpp" | |
51 #endif | |
0 | 52 |
53 #ifdef DTRACE_ENABLED | |
54 | |
55 // Only bother with this argument setup if dtrace is available | |
56 | |
4006 | 57 #define DTRACE_METHOD_UNLOAD_PROBE(method) \ |
58 { \ | |
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59 Method* m = (method); \ |
4006 | 60 if (m != NULL) { \ |
61 Symbol* klass_name = m->klass_name(); \ | |
62 Symbol* name = m->name(); \ | |
63 Symbol* signature = m->signature(); \ | |
64 HOTSPOT_COMPILED_METHOD_UNLOAD( \ | |
65 (char *) klass_name->bytes(), klass_name->utf8_length(), \ | |
66 (char *) name->bytes(), name->utf8_length(), \ | |
67 (char *) signature->bytes(), signature->utf8_length()); \ | |
68 } \ | |
69 } | |
0 | 70 |
71 #else // ndef DTRACE_ENABLED | |
72 | |
73 #define DTRACE_METHOD_UNLOAD_PROBE(method) | |
74 | |
75 #endif | |
76 | |
77 bool nmethod::is_compiled_by_c1() const { | |
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78 if (compiler() == NULL) { |
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79 return false; |
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80 } |
0 | 81 return compiler()->is_c1(); |
82 } | |
9707 | 83 bool nmethod::is_compiled_by_graal() const { |
84 if (compiler() == NULL || method() == NULL) return false; // can happen during debug printing | |
85 if (is_native_method()) return false; | |
86 return compiler()->is_graal(); | |
87 } | |
0 | 88 bool nmethod::is_compiled_by_c2() const { |
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89 if (compiler() == NULL) { |
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90 return false; |
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91 } |
0 | 92 return compiler()->is_c2(); |
93 } | |
1692 | 94 bool nmethod::is_compiled_by_shark() const { |
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95 if (compiler() == NULL) { |
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96 return false; |
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97 } |
1692 | 98 return compiler()->is_shark(); |
99 } | |
0 | 100 |
101 | |
102 | |
103 //--------------------------------------------------------------------------------- | |
104 // NMethod statistics | |
105 // They are printed under various flags, including: | |
106 // PrintC1Statistics, PrintOptoStatistics, LogVMOutput, and LogCompilation. | |
107 // (In the latter two cases, they like other stats are printed to the log only.) | |
108 | |
109 #ifndef PRODUCT | |
110 // These variables are put into one block to reduce relocations | |
111 // and make it simpler to print from the debugger. | |
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112 struct java_nmethod_stats_struct { |
0 | 113 int nmethod_count; |
114 int total_size; | |
115 int relocation_size; | |
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116 int consts_size; |
1748 | 117 int insts_size; |
0 | 118 int stub_size; |
119 int scopes_data_size; | |
120 int scopes_pcs_size; | |
121 int dependencies_size; | |
122 int handler_table_size; | |
123 int nul_chk_table_size; | |
124 int oops_size; | |
125 | |
126 void note_nmethod(nmethod* nm) { | |
127 nmethod_count += 1; | |
128 total_size += nm->size(); | |
129 relocation_size += nm->relocation_size(); | |
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130 consts_size += nm->consts_size(); |
1748 | 131 insts_size += nm->insts_size(); |
0 | 132 stub_size += nm->stub_size(); |
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133 oops_size += nm->oops_size(); |
0 | 134 scopes_data_size += nm->scopes_data_size(); |
135 scopes_pcs_size += nm->scopes_pcs_size(); | |
136 dependencies_size += nm->dependencies_size(); | |
137 handler_table_size += nm->handler_table_size(); | |
138 nul_chk_table_size += nm->nul_chk_table_size(); | |
139 } | |
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140 void print_nmethod_stats(const char* name) { |
0 | 141 if (nmethod_count == 0) return; |
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142 tty->print_cr("Statistics for %d bytecoded nmethods for %s:", nmethod_count, name); |
0 | 143 if (total_size != 0) tty->print_cr(" total in heap = %d", total_size); |
144 if (relocation_size != 0) tty->print_cr(" relocation = %d", relocation_size); | |
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145 if (consts_size != 0) tty->print_cr(" constants = %d", consts_size); |
1748 | 146 if (insts_size != 0) tty->print_cr(" main code = %d", insts_size); |
0 | 147 if (stub_size != 0) tty->print_cr(" stub code = %d", stub_size); |
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148 if (oops_size != 0) tty->print_cr(" oops = %d", oops_size); |
0 | 149 if (scopes_data_size != 0) tty->print_cr(" scopes data = %d", scopes_data_size); |
150 if (scopes_pcs_size != 0) tty->print_cr(" scopes pcs = %d", scopes_pcs_size); | |
151 if (dependencies_size != 0) tty->print_cr(" dependencies = %d", dependencies_size); | |
152 if (handler_table_size != 0) tty->print_cr(" handler table = %d", handler_table_size); | |
153 if (nul_chk_table_size != 0) tty->print_cr(" nul chk table = %d", nul_chk_table_size); | |
154 } | |
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155 }; |
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156 |
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157 struct native_nmethod_stats_struct { |
0 | 158 int native_nmethod_count; |
159 int native_total_size; | |
160 int native_relocation_size; | |
1748 | 161 int native_insts_size; |
0 | 162 int native_oops_size; |
163 void note_native_nmethod(nmethod* nm) { | |
164 native_nmethod_count += 1; | |
165 native_total_size += nm->size(); | |
166 native_relocation_size += nm->relocation_size(); | |
1748 | 167 native_insts_size += nm->insts_size(); |
0 | 168 native_oops_size += nm->oops_size(); |
169 } | |
170 void print_native_nmethod_stats() { | |
171 if (native_nmethod_count == 0) return; | |
172 tty->print_cr("Statistics for %d native nmethods:", native_nmethod_count); | |
173 if (native_total_size != 0) tty->print_cr(" N. total size = %d", native_total_size); | |
174 if (native_relocation_size != 0) tty->print_cr(" N. relocation = %d", native_relocation_size); | |
1748 | 175 if (native_insts_size != 0) tty->print_cr(" N. main code = %d", native_insts_size); |
0 | 176 if (native_oops_size != 0) tty->print_cr(" N. oops = %d", native_oops_size); |
177 } | |
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178 }; |
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179 |
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180 struct pc_nmethod_stats_struct { |
0 | 181 int pc_desc_resets; // number of resets (= number of caches) |
182 int pc_desc_queries; // queries to nmethod::find_pc_desc | |
183 int pc_desc_approx; // number of those which have approximate true | |
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184 int pc_desc_repeats; // number of _pc_descs[0] hits |
0 | 185 int pc_desc_hits; // number of LRU cache hits |
186 int pc_desc_tests; // total number of PcDesc examinations | |
187 int pc_desc_searches; // total number of quasi-binary search steps | |
188 int pc_desc_adds; // number of LUR cache insertions | |
189 | |
190 void print_pc_stats() { | |
191 tty->print_cr("PcDesc Statistics: %d queries, %.2f comparisons per query", | |
192 pc_desc_queries, | |
193 (double)(pc_desc_tests + pc_desc_searches) | |
194 / pc_desc_queries); | |
195 tty->print_cr(" caches=%d queries=%d/%d, hits=%d+%d, tests=%d+%d, adds=%d", | |
196 pc_desc_resets, | |
197 pc_desc_queries, pc_desc_approx, | |
198 pc_desc_repeats, pc_desc_hits, | |
199 pc_desc_tests, pc_desc_searches, pc_desc_adds); | |
200 } | |
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201 }; |
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202 |
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203 #ifdef COMPILER1 |
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204 static java_nmethod_stats_struct c1_java_nmethod_stats; |
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205 #endif |
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206 #ifdef COMPILER2 |
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207 static java_nmethod_stats_struct c2_java_nmethod_stats; |
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208 #endif |
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209 #ifdef GRAAL |
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210 static java_nmethod_stats_struct graal_java_nmethod_stats; |
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211 #endif |
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212 static java_nmethod_stats_struct unknown_java_nmethod_stats; |
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213 |
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214 static native_nmethod_stats_struct native_nmethod_stats; |
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215 static pc_nmethod_stats_struct pc_nmethod_stats; |
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216 |
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217 static void note_java_nmethod(nmethod* nm) { |
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218 #ifdef COMPILER1 |
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219 if (nm->is_compiled_by_c1()) { |
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220 c1_java_nmethod_stats.note_nmethod(nm); |
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221 } else |
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222 #endif |
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223 #ifdef COMPILER2 |
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224 if (nm->is_compiled_by_c2()) { |
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225 c2_java_nmethod_stats.note_nmethod(nm); |
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226 } else |
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227 #endif |
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228 #ifdef GRAAL |
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229 if (nm->is_compiled_by_graal()) { |
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230 graal_java_nmethod_stats.note_nmethod(nm); |
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231 } else |
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232 #endif |
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233 { |
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234 unknown_java_nmethod_stats.note_nmethod(nm); |
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235 } |
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236 } |
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237 #endif |
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238 |
0 | 239 //--------------------------------------------------------------------------------- |
240 | |
241 | |
242 ExceptionCache::ExceptionCache(Handle exception, address pc, address handler) { | |
243 assert(pc != NULL, "Must be non null"); | |
244 assert(exception.not_null(), "Must be non null"); | |
245 assert(handler != NULL, "Must be non null"); | |
246 | |
247 _count = 0; | |
248 _exception_type = exception->klass(); | |
249 _next = NULL; | |
250 | |
251 add_address_and_handler(pc,handler); | |
252 } | |
253 | |
254 | |
255 address ExceptionCache::match(Handle exception, address pc) { | |
256 assert(pc != NULL,"Must be non null"); | |
257 assert(exception.not_null(),"Must be non null"); | |
258 if (exception->klass() == exception_type()) { | |
259 return (test_address(pc)); | |
260 } | |
261 | |
262 return NULL; | |
263 } | |
264 | |
265 | |
266 bool ExceptionCache::match_exception_with_space(Handle exception) { | |
267 assert(exception.not_null(),"Must be non null"); | |
268 if (exception->klass() == exception_type() && count() < cache_size) { | |
269 return true; | |
270 } | |
271 return false; | |
272 } | |
273 | |
274 | |
275 address ExceptionCache::test_address(address addr) { | |
276 for (int i=0; i<count(); i++) { | |
277 if (pc_at(i) == addr) { | |
278 return handler_at(i); | |
279 } | |
280 } | |
281 return NULL; | |
282 } | |
283 | |
284 | |
285 bool ExceptionCache::add_address_and_handler(address addr, address handler) { | |
286 if (test_address(addr) == handler) return true; | |
287 if (count() < cache_size) { | |
288 set_pc_at(count(),addr); | |
289 set_handler_at(count(), handler); | |
290 increment_count(); | |
291 return true; | |
292 } | |
293 return false; | |
294 } | |
295 | |
296 | |
297 // private method for handling exception cache | |
298 // These methods are private, and used to manipulate the exception cache | |
299 // directly. | |
300 ExceptionCache* nmethod::exception_cache_entry_for_exception(Handle exception) { | |
301 ExceptionCache* ec = exception_cache(); | |
302 while (ec != NULL) { | |
303 if (ec->match_exception_with_space(exception)) { | |
304 return ec; | |
305 } | |
306 ec = ec->next(); | |
307 } | |
308 return NULL; | |
309 } | |
310 | |
311 | |
312 //----------------------------------------------------------------------------- | |
313 | |
314 | |
315 // Helper used by both find_pc_desc methods. | |
316 static inline bool match_desc(PcDesc* pc, int pc_offset, bool approximate) { | |
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317 NOT_PRODUCT(++pc_nmethod_stats.pc_desc_tests); |
0 | 318 if (!approximate) |
319 return pc->pc_offset() == pc_offset; | |
320 else | |
321 return (pc-1)->pc_offset() < pc_offset && pc_offset <= pc->pc_offset(); | |
322 } | |
323 | |
324 void PcDescCache::reset_to(PcDesc* initial_pc_desc) { | |
325 if (initial_pc_desc == NULL) { | |
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326 _pc_descs[0] = NULL; // native method; no PcDescs at all |
0 | 327 return; |
328 } | |
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329 NOT_PRODUCT(++pc_nmethod_stats.pc_desc_resets); |
0 | 330 // reset the cache by filling it with benign (non-null) values |
331 assert(initial_pc_desc->pc_offset() < 0, "must be sentinel"); | |
332 for (int i = 0; i < cache_size; i++) | |
333 _pc_descs[i] = initial_pc_desc; | |
334 } | |
335 | |
336 PcDesc* PcDescCache::find_pc_desc(int pc_offset, bool approximate) { | |
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337 NOT_PRODUCT(++pc_nmethod_stats.pc_desc_queries); |
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338 NOT_PRODUCT(if (approximate) ++pc_nmethod_stats.pc_desc_approx); |
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339 |
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340 // Note: one might think that caching the most recently |
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341 // read value separately would be a win, but one would be |
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342 // wrong. When many threads are updating it, the cache |
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343 // line it's in would bounce between caches, negating |
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344 // any benefit. |
0 | 345 |
346 // In order to prevent race conditions do not load cache elements | |
347 // repeatedly, but use a local copy: | |
348 PcDesc* res; | |
349 | |
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350 // Step one: Check the most recently added value. |
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351 res = _pc_descs[0]; |
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352 if (res == NULL) return NULL; // native method; no PcDescs at all |
0 | 353 if (match_desc(res, pc_offset, approximate)) { |
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354 NOT_PRODUCT(++pc_nmethod_stats.pc_desc_repeats); |
0 | 355 return res; |
356 } | |
357 | |
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358 // Step two: Check the rest of the LRU cache. |
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359 for (int i = 1; i < cache_size; ++i) { |
0 | 360 res = _pc_descs[i]; |
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361 if (res->pc_offset() < 0) break; // optimization: skip empty cache |
0 | 362 if (match_desc(res, pc_offset, approximate)) { |
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363 NOT_PRODUCT(++pc_nmethod_stats.pc_desc_hits); |
0 | 364 return res; |
365 } | |
366 } | |
367 | |
368 // Report failure. | |
369 return NULL; | |
370 } | |
371 | |
372 void PcDescCache::add_pc_desc(PcDesc* pc_desc) { | |
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373 NOT_PRODUCT(++pc_nmethod_stats.pc_desc_adds); |
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374 // Update the LRU cache by shifting pc_desc forward. |
0 | 375 for (int i = 0; i < cache_size; i++) { |
376 PcDesc* next = _pc_descs[i]; | |
377 _pc_descs[i] = pc_desc; | |
378 pc_desc = next; | |
379 } | |
380 } | |
381 | |
382 // adjust pcs_size so that it is a multiple of both oopSize and | |
383 // sizeof(PcDesc) (assumes that if sizeof(PcDesc) is not a multiple | |
384 // of oopSize, then 2*sizeof(PcDesc) is) | |
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385 static int adjust_pcs_size(int pcs_size) { |
0 | 386 int nsize = round_to(pcs_size, oopSize); |
387 if ((nsize % sizeof(PcDesc)) != 0) { | |
388 nsize = pcs_size + sizeof(PcDesc); | |
389 } | |
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390 assert((nsize % oopSize) == 0, "correct alignment"); |
0 | 391 return nsize; |
392 } | |
393 | |
394 //----------------------------------------------------------------------------- | |
395 | |
396 | |
397 void nmethod::add_exception_cache_entry(ExceptionCache* new_entry) { | |
398 assert(ExceptionCache_lock->owned_by_self(),"Must hold the ExceptionCache_lock"); | |
399 assert(new_entry != NULL,"Must be non null"); | |
400 assert(new_entry->next() == NULL, "Must be null"); | |
401 | |
402 if (exception_cache() != NULL) { | |
403 new_entry->set_next(exception_cache()); | |
404 } | |
405 set_exception_cache(new_entry); | |
406 } | |
407 | |
408 void nmethod::remove_from_exception_cache(ExceptionCache* ec) { | |
409 ExceptionCache* prev = NULL; | |
410 ExceptionCache* curr = exception_cache(); | |
411 assert(curr != NULL, "nothing to remove"); | |
412 // find the previous and next entry of ec | |
413 while (curr != ec) { | |
414 prev = curr; | |
415 curr = curr->next(); | |
416 assert(curr != NULL, "ExceptionCache not found"); | |
417 } | |
418 // now: curr == ec | |
419 ExceptionCache* next = curr->next(); | |
420 if (prev == NULL) { | |
421 set_exception_cache(next); | |
422 } else { | |
423 prev->set_next(next); | |
424 } | |
425 delete curr; | |
426 } | |
427 | |
428 | |
429 // public method for accessing the exception cache | |
430 // These are the public access methods. | |
431 address nmethod::handler_for_exception_and_pc(Handle exception, address pc) { | |
432 // We never grab a lock to read the exception cache, so we may | |
433 // have false negatives. This is okay, as it can only happen during | |
434 // the first few exception lookups for a given nmethod. | |
435 ExceptionCache* ec = exception_cache(); | |
436 while (ec != NULL) { | |
437 address ret_val; | |
438 if ((ret_val = ec->match(exception,pc)) != NULL) { | |
439 return ret_val; | |
440 } | |
441 ec = ec->next(); | |
442 } | |
443 return NULL; | |
444 } | |
445 | |
446 | |
447 void nmethod::add_handler_for_exception_and_pc(Handle exception, address pc, address handler) { | |
448 // There are potential race conditions during exception cache updates, so we | |
449 // must own the ExceptionCache_lock before doing ANY modifications. Because | |
605 | 450 // we don't lock during reads, it is possible to have several threads attempt |
0 | 451 // to update the cache with the same data. We need to check for already inserted |
452 // copies of the current data before adding it. | |
453 | |
454 MutexLocker ml(ExceptionCache_lock); | |
455 ExceptionCache* target_entry = exception_cache_entry_for_exception(exception); | |
456 | |
457 if (target_entry == NULL || !target_entry->add_address_and_handler(pc,handler)) { | |
458 target_entry = new ExceptionCache(exception,pc,handler); | |
459 add_exception_cache_entry(target_entry); | |
460 } | |
461 } | |
462 | |
463 | |
464 //-------------end of code for ExceptionCache-------------- | |
465 | |
466 | |
467 int nmethod::total_size() const { | |
468 return | |
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469 consts_size() + |
1748 | 470 insts_size() + |
0 | 471 stub_size() + |
472 scopes_data_size() + | |
473 scopes_pcs_size() + | |
474 handler_table_size() + | |
475 nul_chk_table_size(); | |
476 } | |
477 | |
478 const char* nmethod::compile_kind() const { | |
479 if (is_osr_method()) return "osr"; | |
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480 if (method() != NULL && is_native_method()) return "c2n"; |
0 | 481 return NULL; |
482 } | |
483 | |
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484 // Fill in default values for various flag fields |
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485 void nmethod::init_defaults() { |
13441 | 486 _state = in_use; |
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487 _marked_for_reclamation = 0; |
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488 _has_flushed_dependencies = 0; |
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489 _has_unsafe_access = 0; |
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490 _has_method_handle_invokes = 0; |
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491 _lazy_critical_native = 0; |
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492 _has_wide_vectors = 0; |
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493 _marked_for_deoptimization = 0; |
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494 _lock_count = 0; |
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495 _stack_traversal_mark = 0; |
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496 _unload_reported = false; // jvmti state |
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497 |
1726 | 498 #ifdef ASSERT |
499 _oops_are_stale = false; | |
500 #endif | |
501 | |
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502 _oops_do_mark_link = NULL; |
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503 _jmethod_id = NULL; |
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504 _osr_link = NULL; |
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505 _scavenge_root_link = NULL; |
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506 _scavenge_root_state = 0; |
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507 _compiler = NULL; |
9707 | 508 #ifdef GRAAL |
509 _graal_installed_code = NULL; | |
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510 _speculation_log = NULL; |
9707 | 511 #endif |
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512 #ifdef HAVE_DTRACE_H |
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513 _trap_offset = 0; |
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514 #endif // def HAVE_DTRACE_H |
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515 } |
0 | 516 |
517 nmethod* nmethod::new_native_nmethod(methodHandle method, | |
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518 int compile_id, |
0 | 519 CodeBuffer *code_buffer, |
520 int vep_offset, | |
521 int frame_complete, | |
522 int frame_size, | |
523 ByteSize basic_lock_owner_sp_offset, | |
524 ByteSize basic_lock_sp_offset, | |
525 OopMapSet* oop_maps) { | |
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526 code_buffer->finalize_oop_references(method); |
0 | 527 // create nmethod |
528 nmethod* nm = NULL; | |
529 { | |
530 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
531 int native_nmethod_size = allocation_size(code_buffer, sizeof(nmethod)); | |
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532 CodeOffsets offsets; |
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533 offsets.set_value(CodeOffsets::Verified_Entry, vep_offset); |
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534 offsets.set_value(CodeOffsets::Frame_Complete, frame_complete); |
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535 nm = new (native_nmethod_size) nmethod(method(), native_nmethod_size, |
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536 compile_id, &offsets, |
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537 code_buffer, frame_size, |
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538 basic_lock_owner_sp_offset, |
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539 basic_lock_sp_offset, oop_maps); |
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540 NOT_PRODUCT(if (nm != NULL) note_java_nmethod(nm)); |
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541 if (PrintAssembly && nm != NULL) { |
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542 Disassembler::decode(nm); |
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543 } |
0 | 544 } |
545 // verify nmethod | |
546 debug_only(if (nm) nm->verify();) // might block | |
547 | |
548 if (nm != NULL) { | |
549 nm->log_new_nmethod(); | |
550 } | |
551 | |
552 return nm; | |
553 } | |
554 | |
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555 #ifdef HAVE_DTRACE_H |
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556 nmethod* nmethod::new_dtrace_nmethod(methodHandle method, |
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557 CodeBuffer *code_buffer, |
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558 int vep_offset, |
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559 int trap_offset, |
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560 int frame_complete, |
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561 int frame_size) { |
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562 code_buffer->finalize_oop_references(method); |
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563 // create nmethod |
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564 nmethod* nm = NULL; |
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565 { |
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566 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
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567 int nmethod_size = allocation_size(code_buffer, sizeof(nmethod)); |
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568 CodeOffsets offsets; |
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569 offsets.set_value(CodeOffsets::Verified_Entry, vep_offset); |
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570 offsets.set_value(CodeOffsets::Dtrace_trap, trap_offset); |
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571 offsets.set_value(CodeOffsets::Frame_Complete, frame_complete); |
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572 |
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573 nm = new (nmethod_size) nmethod(method(), nmethod_size, |
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574 &offsets, code_buffer, frame_size); |
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575 |
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576 NOT_PRODUCT(if (nm != NULL) note_java_nmethod(nm)); |
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577 if (PrintAssembly && nm != NULL) { |
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578 Disassembler::decode(nm); |
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579 } |
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580 } |
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581 // verify nmethod |
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582 debug_only(if (nm) nm->verify();) // might block |
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583 |
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584 if (nm != NULL) { |
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585 nm->log_new_nmethod(); |
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586 } |
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587 |
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588 return nm; |
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589 } |
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590 |
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591 #endif // def HAVE_DTRACE_H |
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592 |
0 | 593 nmethod* nmethod::new_nmethod(methodHandle method, |
594 int compile_id, | |
595 int entry_bci, | |
596 CodeOffsets* offsets, | |
597 int orig_pc_offset, | |
598 DebugInformationRecorder* debug_info, | |
599 Dependencies* dependencies, | |
600 CodeBuffer* code_buffer, int frame_size, | |
601 OopMapSet* oop_maps, | |
602 ExceptionHandlerTable* handler_table, | |
603 ImplicitExceptionTable* nul_chk_table, | |
604 AbstractCompiler* compiler, | |
605 int comp_level | |
9707 | 606 #ifdef GRAAL |
607 , Handle installed_code, | |
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608 Handle speculationLog |
9707 | 609 #endif |
0 | 610 ) |
611 { | |
612 assert(debug_info->oop_recorder() == code_buffer->oop_recorder(), "shared OR"); | |
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613 code_buffer->finalize_oop_references(method); |
0 | 614 // create nmethod |
615 nmethod* nm = NULL; | |
616 { MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
617 int nmethod_size = | |
618 allocation_size(code_buffer, sizeof(nmethod)) | |
619 + adjust_pcs_size(debug_info->pcs_size()) | |
620 + round_to(dependencies->size_in_bytes() , oopSize) | |
621 + round_to(handler_table->size_in_bytes(), oopSize) | |
622 + round_to(nul_chk_table->size_in_bytes(), oopSize) | |
623 + round_to(debug_info->data_size() , oopSize); | |
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624 nm = new (nmethod_size) |
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625 nmethod(method(), nmethod_size, compile_id, entry_bci, offsets, |
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626 orig_pc_offset, debug_info, dependencies, code_buffer, frame_size, |
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627 oop_maps, |
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628 handler_table, |
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629 nul_chk_table, |
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630 compiler, |
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631 comp_level |
9707 | 632 #ifdef GRAAL |
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633 , installed_code, |
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634 speculationLog |
9707 | 635 #endif |
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636 ); |
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637 |
0 | 638 if (nm != NULL) { |
639 // To make dependency checking during class loading fast, record | |
640 // the nmethod dependencies in the classes it is dependent on. | |
641 // This allows the dependency checking code to simply walk the | |
642 // class hierarchy above the loaded class, checking only nmethods | |
643 // which are dependent on those classes. The slow way is to | |
644 // check every nmethod for dependencies which makes it linear in | |
645 // the number of methods compiled. For applications with a lot | |
646 // classes the slow way is too slow. | |
647 for (Dependencies::DepStream deps(nm); deps.next(); ) { | |
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648 Klass* klass = deps.context_type(); |
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649 if (klass == NULL) { |
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650 continue; // ignore things like evol_method |
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651 } |
0 | 652 |
653 // record this nmethod as dependent on this klass | |
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654 InstanceKlass::cast(klass)->add_dependent_nmethod(nm); |
0 | 655 } |
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656 NOT_PRODUCT(if (nm != NULL) note_java_nmethod(nm)); |
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657 if (PrintAssembly || CompilerOracle::has_option_string(method, "PrintAssembly")) { |
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658 Disassembler::decode(nm); |
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659 } |
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660 } |
0 | 661 } |
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662 // Do verification and logging outside CodeCache_lock. |
0 | 663 if (nm != NULL) { |
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664 // Safepoints in nmethod::verify aren't allowed because nm hasn't been installed yet. |
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665 DEBUG_ONLY(nm->verify();) |
0 | 666 nm->log_new_nmethod(); |
667 } | |
668 return nm; | |
669 } | |
670 | |
671 | |
672 // For native wrappers | |
673 nmethod::nmethod( | |
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674 Method* method, |
0 | 675 int nmethod_size, |
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676 int compile_id, |
0 | 677 CodeOffsets* offsets, |
678 CodeBuffer* code_buffer, | |
679 int frame_size, | |
680 ByteSize basic_lock_owner_sp_offset, | |
681 ByteSize basic_lock_sp_offset, | |
682 OopMapSet* oop_maps ) | |
683 : CodeBlob("native nmethod", code_buffer, sizeof(nmethod), | |
684 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, oop_maps), | |
2019 | 685 _native_receiver_sp_offset(basic_lock_owner_sp_offset), |
686 _native_basic_lock_sp_offset(basic_lock_sp_offset) | |
0 | 687 { |
688 { | |
689 debug_only(No_Safepoint_Verifier nsv;) | |
690 assert_locked_or_safepoint(CodeCache_lock); | |
691 | |
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692 init_defaults(); |
0 | 693 _method = method; |
694 _entry_bci = InvocationEntryBci; | |
695 // We have no exception handler or deopt handler make the | |
696 // values something that will never match a pc like the nmethod vtable entry | |
697 _exception_offset = 0; | |
698 _deoptimize_offset = 0; | |
1204 | 699 _deoptimize_mh_offset = 0; |
0 | 700 _orig_pc_offset = 0; |
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701 |
1748 | 702 _consts_offset = data_offset(); |
0 | 703 _stub_offset = data_offset(); |
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704 _oops_offset = data_offset(); |
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705 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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706 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
0 | 707 _scopes_pcs_offset = _scopes_data_offset; |
708 _dependencies_offset = _scopes_pcs_offset; | |
709 _handler_table_offset = _dependencies_offset; | |
710 _nul_chk_table_offset = _handler_table_offset; | |
711 _nmethod_end_offset = _nul_chk_table_offset; | |
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712 _compile_id = compile_id; |
0 | 713 _comp_level = CompLevel_none; |
1748 | 714 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
715 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
0 | 716 _osr_entry_point = NULL; |
717 _exception_cache = NULL; | |
718 _pc_desc_cache.reset_to(NULL); | |
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719 _hotness_counter = NMethodSweeper::hotness_counter_reset_val(); |
0 | 720 |
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721 code_buffer->copy_values_to(this); |
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722 if (ScavengeRootsInCode && detect_scavenge_root_oops()) { |
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723 CodeCache::add_scavenge_root_nmethod(this); |
12080 | 724 Universe::heap()->register_nmethod(this); |
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725 } |
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726 debug_only(verify_scavenge_root_oops()); |
0 | 727 CodeCache::commit(this); |
728 } | |
729 | |
730 if (PrintNativeNMethods || PrintDebugInfo || PrintRelocations || PrintDependencies) { | |
731 ttyLocker ttyl; // keep the following output all in one block | |
732 // This output goes directly to the tty, not the compiler log. | |
733 // To enable tools to match it up with the compilation activity, | |
734 // be sure to tag this tty output with the compile ID. | |
735 if (xtty != NULL) { | |
736 xtty->begin_head("print_native_nmethod"); | |
737 xtty->method(_method); | |
738 xtty->stamp(); | |
739 xtty->end_head(" address='" INTPTR_FORMAT "'", (intptr_t) this); | |
740 } | |
741 // print the header part first | |
742 print(); | |
743 // then print the requested information | |
744 if (PrintNativeNMethods) { | |
745 print_code(); | |
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746 if (oop_maps != NULL) { |
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747 oop_maps->print(); |
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748 } |
0 | 749 } |
750 if (PrintRelocations) { | |
751 print_relocations(); | |
752 } | |
753 if (xtty != NULL) { | |
754 xtty->tail("print_native_nmethod"); | |
755 } | |
756 } | |
757 } | |
758 | |
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759 // For dtrace wrappers |
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760 #ifdef HAVE_DTRACE_H |
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761 nmethod::nmethod( |
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762 Method* method, |
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763 int nmethod_size, |
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764 CodeOffsets* offsets, |
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765 CodeBuffer* code_buffer, |
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766 int frame_size) |
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767 : CodeBlob("dtrace nmethod", code_buffer, sizeof(nmethod), |
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768 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, NULL), |
2019 | 769 _native_receiver_sp_offset(in_ByteSize(-1)), |
770 _native_basic_lock_sp_offset(in_ByteSize(-1)) | |
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771 { |
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772 { |
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773 debug_only(No_Safepoint_Verifier nsv;) |
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774 assert_locked_or_safepoint(CodeCache_lock); |
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775 |
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776 init_defaults(); |
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777 _method = method; |
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778 _entry_bci = InvocationEntryBci; |
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779 // We have no exception handler or deopt handler make the |
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780 // values something that will never match a pc like the nmethod vtable entry |
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781 _exception_offset = 0; |
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782 _deoptimize_offset = 0; |
1204 | 783 _deoptimize_mh_offset = 0; |
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784 _unwind_handler_offset = -1; |
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785 _trap_offset = offsets->value(CodeOffsets::Dtrace_trap); |
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786 _orig_pc_offset = 0; |
1748 | 787 _consts_offset = data_offset(); |
116
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788 _stub_offset = data_offset(); |
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789 _oops_offset = data_offset(); |
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790 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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791 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
116
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792 _scopes_pcs_offset = _scopes_data_offset; |
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793 _dependencies_offset = _scopes_pcs_offset; |
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794 _handler_table_offset = _dependencies_offset; |
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795 _nul_chk_table_offset = _handler_table_offset; |
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796 _nmethod_end_offset = _nul_chk_table_offset; |
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797 _compile_id = 0; // default |
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798 _comp_level = CompLevel_none; |
1748 | 799 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
800 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
116
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801 _osr_entry_point = NULL; |
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802 _exception_cache = NULL; |
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803 _pc_desc_cache.reset_to(NULL); |
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804 _hotness_counter = NMethodSweeper::hotness_counter_reset_val(); |
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805 |
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806 code_buffer->copy_values_to(this); |
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807 debug_only(verify_scavenge_root_oops()); |
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808 CodeCache::commit(this); |
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809 } |
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810 |
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811 if (PrintNMethods || PrintDebugInfo || PrintRelocations || PrintDependencies) { |
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812 ttyLocker ttyl; // keep the following output all in one block |
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813 // This output goes directly to the tty, not the compiler log. |
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814 // To enable tools to match it up with the compilation activity, |
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815 // be sure to tag this tty output with the compile ID. |
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816 if (xtty != NULL) { |
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817 xtty->begin_head("print_dtrace_nmethod"); |
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818 xtty->method(_method); |
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819 xtty->stamp(); |
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820 xtty->end_head(" address='" INTPTR_FORMAT "'", (intptr_t) this); |
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821 } |
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822 // print the header part first |
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823 print(); |
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824 // then print the requested information |
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825 if (PrintNMethods) { |
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826 print_code(); |
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827 } |
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828 if (PrintRelocations) { |
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829 print_relocations(); |
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830 } |
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831 if (xtty != NULL) { |
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832 xtty->tail("print_dtrace_nmethod"); |
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833 } |
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834 } |
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835 } |
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836 #endif // def HAVE_DTRACE_H |
0 | 837 |
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838 void* nmethod::operator new(size_t size, int nmethod_size) throw() { |
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839 // Not critical, may return null if there is too little continuous memory |
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840 return CodeCache::allocate(nmethod_size); |
0 | 841 } |
842 | |
843 nmethod::nmethod( | |
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844 Method* method, |
0 | 845 int nmethod_size, |
846 int compile_id, | |
847 int entry_bci, | |
848 CodeOffsets* offsets, | |
849 int orig_pc_offset, | |
850 DebugInformationRecorder* debug_info, | |
851 Dependencies* dependencies, | |
852 CodeBuffer *code_buffer, | |
853 int frame_size, | |
854 OopMapSet* oop_maps, | |
855 ExceptionHandlerTable* handler_table, | |
856 ImplicitExceptionTable* nul_chk_table, | |
857 AbstractCompiler* compiler, | |
858 int comp_level | |
9707 | 859 #ifdef GRAAL |
860 , Handle installed_code, | |
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861 Handle speculation_log |
9707 | 862 #endif |
0 | 863 ) |
864 : CodeBlob("nmethod", code_buffer, sizeof(nmethod), | |
865 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, oop_maps), | |
2019 | 866 _native_receiver_sp_offset(in_ByteSize(-1)), |
867 _native_basic_lock_sp_offset(in_ByteSize(-1)) | |
0 | 868 { |
869 assert(debug_info->oop_recorder() == code_buffer->oop_recorder(), "shared OR"); | |
870 { | |
871 debug_only(No_Safepoint_Verifier nsv;) | |
872 assert_locked_or_safepoint(CodeCache_lock); | |
873 | |
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874 init_defaults(); |
0 | 875 _method = method; |
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876 _entry_bci = entry_bci; |
0 | 877 _compile_id = compile_id; |
878 _comp_level = comp_level; | |
879 _compiler = compiler; | |
880 _orig_pc_offset = orig_pc_offset; | |
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881 _hotness_counter = NMethodSweeper::hotness_counter_reset_val(); |
1748 | 882 |
883 // Section offsets | |
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884 _consts_offset = content_offset() + code_buffer->total_offset_of(code_buffer->consts()); |
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885 _stub_offset = content_offset() + code_buffer->total_offset_of(code_buffer->stubs()); |
0 | 886 |
9707 | 887 #ifdef GRAAL |
888 _graal_installed_code = installed_code(); | |
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889 _speculation_log = (instanceOop)speculation_log(); |
9707 | 890 #endif |
891 if (compiler->is_graal()) { | |
892 // Graal might not produce any stub sections | |
893 if (offsets->value(CodeOffsets::Exceptions) != -1) { | |
894 _exception_offset = code_offset() + offsets->value(CodeOffsets::Exceptions); | |
895 } else { | |
896 _exception_offset = -1; | |
897 } | |
898 if (offsets->value(CodeOffsets::Deopt) != -1) { | |
899 _deoptimize_offset = code_offset() + offsets->value(CodeOffsets::Deopt); | |
900 } else { | |
901 _deoptimize_offset = -1; | |
902 } | |
903 if (offsets->value(CodeOffsets::DeoptMH) != -1) { | |
904 _deoptimize_mh_offset = code_offset() + offsets->value(CodeOffsets::DeoptMH); | |
905 } else { | |
906 _deoptimize_mh_offset = -1; | |
907 } | |
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908 } else { |
9707 | 909 // Exception handler and deopt handler are in the stub section |
910 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must be set"); | |
911 assert(offsets->value(CodeOffsets::Deopt ) != -1, "must be set"); | |
912 | |
913 _exception_offset = _stub_offset + offsets->value(CodeOffsets::Exceptions); | |
914 _deoptimize_offset = _stub_offset + offsets->value(CodeOffsets::Deopt); | |
915 if (offsets->value(CodeOffsets::DeoptMH) != -1) { | |
916 _deoptimize_mh_offset = _stub_offset + offsets->value(CodeOffsets::DeoptMH); | |
917 } else { | |
918 _deoptimize_mh_offset = -1; | |
919 } | |
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920 } |
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921 if (offsets->value(CodeOffsets::UnwindHandler) != -1) { |
1748 | 922 _unwind_handler_offset = code_offset() + offsets->value(CodeOffsets::UnwindHandler); |
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923 } else { |
1748 | 924 _unwind_handler_offset = -1; |
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925 } |
1748 | 926 |
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927 _oops_offset = data_offset(); |
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928 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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929 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
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930 |
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931 _scopes_pcs_offset = _scopes_data_offset + round_to(debug_info->data_size (), oopSize); |
0 | 932 _dependencies_offset = _scopes_pcs_offset + adjust_pcs_size(debug_info->pcs_size()); |
933 _handler_table_offset = _dependencies_offset + round_to(dependencies->size_in_bytes (), oopSize); | |
934 _nul_chk_table_offset = _handler_table_offset + round_to(handler_table->size_in_bytes(), oopSize); | |
935 _nmethod_end_offset = _nul_chk_table_offset + round_to(nul_chk_table->size_in_bytes(), oopSize); | |
936 | |
1748 | 937 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
938 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
939 _osr_entry_point = code_begin() + offsets->value(CodeOffsets::OSR_Entry); | |
0 | 940 _exception_cache = NULL; |
941 _pc_desc_cache.reset_to(scopes_pcs_begin()); | |
942 | |
943 // Copy contents of ScopeDescRecorder to nmethod | |
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944 code_buffer->copy_values_to(this); |
0 | 945 debug_info->copy_to(this); |
946 dependencies->copy_to(this); | |
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947 if (ScavengeRootsInCode && detect_scavenge_root_oops()) { |
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948 CodeCache::add_scavenge_root_nmethod(this); |
12080 | 949 Universe::heap()->register_nmethod(this); |
989
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950 } |
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951 debug_only(verify_scavenge_root_oops()); |
0 | 952 |
953 CodeCache::commit(this); | |
954 | |
955 // Copy contents of ExceptionHandlerTable to nmethod | |
956 handler_table->copy_to(this); | |
957 nul_chk_table->copy_to(this); | |
958 | |
959 // we use the information of entry points to find out if a method is | |
960 // static or non static | |
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961 assert(compiler->is_c2() || compiler->is_graal() || |
0 | 962 _method->is_static() == (entry_point() == _verified_entry_point), |
963 " entry points must be same for static methods and vice versa"); | |
964 } | |
965 | |
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966 bool printnmethods = PrintNMethods |
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967 || CompilerOracle::should_print(_method) |
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968 || CompilerOracle::has_option_string(_method, "PrintNMethods"); |
0 | 969 if (printnmethods || PrintDebugInfo || PrintRelocations || PrintDependencies || PrintExceptionHandlers) { |
970 print_nmethod(printnmethods); | |
971 } | |
972 } | |
973 | |
974 | |
975 // Print a short set of xml attributes to identify this nmethod. The | |
976 // output should be embedded in some other element. | |
977 void nmethod::log_identity(xmlStream* log) const { | |
978 log->print(" compile_id='%d'", compile_id()); | |
979 const char* nm_kind = compile_kind(); | |
980 if (nm_kind != NULL) log->print(" compile_kind='%s'", nm_kind); | |
981 if (compiler() != NULL) { | |
982 log->print(" compiler='%s'", compiler()->name()); | |
983 } | |
1783 | 984 if (TieredCompilation) { |
985 log->print(" level='%d'", comp_level()); | |
986 } | |
0 | 987 } |
988 | |
989 | |
990 #define LOG_OFFSET(log, name) \ | |
991 if ((intptr_t)name##_end() - (intptr_t)name##_begin()) \ | |
992 log->print(" " XSTR(name) "_offset='%d'" , \ | |
993 (intptr_t)name##_begin() - (intptr_t)this) | |
994 | |
995 | |
996 void nmethod::log_new_nmethod() const { | |
997 if (LogCompilation && xtty != NULL) { | |
998 ttyLocker ttyl; | |
999 HandleMark hm; | |
1000 xtty->begin_elem("nmethod"); | |
1001 log_identity(xtty); | |
1748 | 1002 xtty->print(" entry='" INTPTR_FORMAT "' size='%d'", code_begin(), size()); |
0 | 1003 xtty->print(" address='" INTPTR_FORMAT "'", (intptr_t) this); |
1004 | |
1005 LOG_OFFSET(xtty, relocation); | |
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1006 LOG_OFFSET(xtty, consts); |
1748 | 1007 LOG_OFFSET(xtty, insts); |
0 | 1008 LOG_OFFSET(xtty, stub); |
1009 LOG_OFFSET(xtty, scopes_data); | |
1010 LOG_OFFSET(xtty, scopes_pcs); | |
1011 LOG_OFFSET(xtty, dependencies); | |
1012 LOG_OFFSET(xtty, handler_table); | |
1013 LOG_OFFSET(xtty, nul_chk_table); | |
1014 LOG_OFFSET(xtty, oops); | |
1015 | |
1016 xtty->method(method()); | |
1017 xtty->stamp(); | |
1018 xtty->end_elem(); | |
1019 } | |
1020 } | |
1021 | |
1022 #undef LOG_OFFSET | |
1023 | |
1024 | |
1025 // Print out more verbose output usually for a newly created nmethod. | |
2405
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1026 void nmethod::print_on(outputStream* st, const char* msg) const { |
0 | 1027 if (st != NULL) { |
1028 ttyLocker ttyl; | |
14550
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|
1029 if (CIPrintCompilerName) st->print("%s:", compiler()->name()); |
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1030 if (WizardMode) { |
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1031 CompileTask::print_compilation(st, this, msg, /*short_form:*/ true); |
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1032 st->print_cr(" (" INTPTR_FORMAT ")", this); |
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1033 } else { |
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1034 CompileTask::print_compilation(st, this, msg, /*short_form:*/ false); |
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1035 } |
0 | 1036 } |
1037 } | |
1038 | |
1039 | |
1040 void nmethod::print_nmethod(bool printmethod) { | |
1041 ttyLocker ttyl; // keep the following output all in one block | |
1042 if (xtty != NULL) { | |
1043 xtty->begin_head("print_nmethod"); | |
1044 xtty->stamp(); | |
1045 xtty->end_head(); | |
1046 } | |
1047 // print the header part first | |
1048 print(); | |
1049 // then print the requested information | |
1050 if (printmethod) { | |
1051 print_code(); | |
1052 print_pcs(); | |
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1053 if (oop_maps()) { |
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1054 oop_maps()->print(); |
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1055 } |
0 | 1056 } |
1057 if (PrintDebugInfo) { | |
1058 print_scopes(); | |
1059 } | |
1060 if (PrintRelocations) { | |
1061 print_relocations(); | |
1062 } | |
1063 if (PrintDependencies) { | |
1064 print_dependencies(); | |
1065 } | |
1066 if (PrintExceptionHandlers) { | |
1067 print_handler_table(); | |
1068 print_nul_chk_table(); | |
1069 } | |
1070 if (xtty != NULL) { | |
1071 xtty->tail("print_nmethod"); | |
1072 } | |
1073 } | |
1074 | |
1075 | |
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1076 // Promote one word from an assembly-time handle to a live embedded oop. |
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1077 inline void nmethod::initialize_immediate_oop(oop* dest, jobject handle) { |
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1078 if (handle == NULL || |
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1079 // As a special case, IC oops are initialized to 1 or -1. |
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1080 handle == (jobject) Universe::non_oop_word()) { |
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1081 (*dest) = (oop) handle; |
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1082 } else { |
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1083 (*dest) = JNIHandles::resolve_non_null(handle); |
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1084 } |
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1085 } |
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1086 |
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1087 |
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1088 // Have to have the same name because it's called by a template |
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1089 void nmethod::copy_values(GrowableArray<jobject>* array) { |
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1090 int length = array->length(); |
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1091 assert((address)(oops_begin() + length) <= (address)oops_end(), "oops big enough"); |
1563
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1092 oop* dest = oops_begin(); |
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1093 for (int index = 0 ; index < length; index++) { |
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1094 initialize_immediate_oop(&dest[index], array->at(index)); |
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1095 } |
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1096 |
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1097 // Now we can fix up all the oops in the code. We need to do this |
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1098 // in the code because the assembler uses jobjects as placeholders. |
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1099 // The code and relocations have already been initialized by the |
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1100 // CodeBlob constructor, so it is valid even at this early point to |
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1101 // iterate over relocations and patch the code. |
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1102 fix_oop_relocations(NULL, NULL, /*initialize_immediates=*/ true); |
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1103 } |
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1104 |
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1105 void nmethod::copy_values(GrowableArray<Metadata*>* array) { |
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1106 int length = array->length(); |
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1107 assert((address)(metadata_begin() + length) <= (address)metadata_end(), "big enough"); |
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1108 Metadata** dest = metadata_begin(); |
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1109 for (int index = 0 ; index < length; index++) { |
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1110 dest[index] = array->at(index); |
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1111 } |
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1112 } |
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1113 |
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1114 bool nmethod::is_at_poll_return(address pc) { |
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1115 RelocIterator iter(this, pc, pc+1); |
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1116 while (iter.next()) { |
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1117 if (iter.type() == relocInfo::poll_return_type) |
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1118 return true; |
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1119 } |
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1120 return false; |
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1121 } |
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1122 |
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1123 |
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1124 bool nmethod::is_at_poll_or_poll_return(address pc) { |
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1125 RelocIterator iter(this, pc, pc+1); |
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1126 while (iter.next()) { |
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1127 relocInfo::relocType t = iter.type(); |
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1128 if (t == relocInfo::poll_return_type || t == relocInfo::poll_type) |
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1129 return true; |
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1130 } |
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1131 return false; |
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1132 } |
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1133 |
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1134 |
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1135 void nmethod::fix_oop_relocations(address begin, address end, bool initialize_immediates) { |
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1136 // re-patch all oop-bearing instructions, just in case some oops moved |
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1137 RelocIterator iter(this, begin, end); |
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1138 while (iter.next()) { |
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1139 if (iter.type() == relocInfo::oop_type) { |
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1140 oop_Relocation* reloc = iter.oop_reloc(); |
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1141 if (initialize_immediates && reloc->oop_is_immediate()) { |
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1142 oop* dest = reloc->oop_addr(); |
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1143 initialize_immediate_oop(dest, (jobject) *dest); |
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1144 } |
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1145 // Refresh the oop-related bits of this instruction. |
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1146 reloc->fix_oop_relocation(); |
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1147 } else if (iter.type() == relocInfo::metadata_type) { |
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1148 metadata_Relocation* reloc = iter.metadata_reloc(); |
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1149 reloc->fix_metadata_relocation(); |
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1150 } |
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1151 } |
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1152 } |
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1153 |
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1154 |
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1155 void nmethod::verify_oop_relocations() { |
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1156 // Ensure sure that the code matches the current oop values |
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1157 RelocIterator iter(this, NULL, NULL); |
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1158 while (iter.next()) { |
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1159 if (iter.type() == relocInfo::oop_type) { |
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1160 oop_Relocation* reloc = iter.oop_reloc(); |
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1161 if (!reloc->oop_is_immediate()) { |
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1162 reloc->verify_oop_relocation(); |
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|
1163 } |
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1164 } |
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1165 } |
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1166 } |
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1167 |
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1168 |
0 | 1169 ScopeDesc* nmethod::scope_desc_at(address pc) { |
1170 PcDesc* pd = pc_desc_at(pc); | |
1171 guarantee(pd != NULL, "scope must be present"); | |
1172 return new ScopeDesc(this, pd->scope_decode_offset(), | |
9707 | 1173 pd->obj_decode_offset(), pd->should_reexecute(), pd->rethrow_exception(), |
1253
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|
1174 pd->return_oop()); |
0 | 1175 } |
1176 | |
1177 | |
1178 void nmethod::clear_inline_caches() { | |
1179 assert(SafepointSynchronize::is_at_safepoint(), "cleaning of IC's only allowed at safepoint"); | |
1180 if (is_zombie()) { | |
1181 return; | |
1182 } | |
1183 | |
1184 RelocIterator iter(this); | |
1185 while (iter.next()) { | |
1186 iter.reloc()->clear_inline_cache(); | |
1187 } | |
1188 } | |
1189 | |
1190 | |
1191 void nmethod::cleanup_inline_caches() { | |
1192 | |
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1193 assert_locked_or_safepoint(CompiledIC_lock); |
0 | 1194 |
1195 // If the method is not entrant or zombie then a JMP is plastered over the | |
1196 // first few bytes. If an oop in the old code was there, that oop | |
1197 // should not get GC'd. Skip the first few bytes of oops on | |
1198 // not-entrant methods. | |
1199 address low_boundary = verified_entry_point(); | |
1200 if (!is_in_use()) { | |
1201 low_boundary += NativeJump::instruction_size; | |
1202 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
1203 // This means that the low_boundary is going to be a little too high. | |
1204 // This shouldn't matter, since oops of non-entrant methods are never used. | |
1205 // In fact, why are we bothering to look at oops in a non-entrant method?? | |
1206 } | |
1207 | |
1208 // Find all calls in an nmethod, and clear the ones that points to zombie methods | |
1209 ResourceMark rm; | |
1210 RelocIterator iter(this, low_boundary); | |
1211 while(iter.next()) { | |
1212 switch(iter.type()) { | |
1213 case relocInfo::virtual_call_type: | |
1214 case relocInfo::opt_virtual_call_type: { | |
1215 CompiledIC *ic = CompiledIC_at(iter.reloc()); | |
1216 // Ok, to lookup references to zombies here | |
1217 CodeBlob *cb = CodeCache::find_blob_unsafe(ic->ic_destination()); | |
1218 if( cb != NULL && cb->is_nmethod() ) { | |
1219 nmethod* nm = (nmethod*)cb; | |
1220 // Clean inline caches pointing to both zombie and not_entrant methods | |
1202 | 1221 if (!nm->is_in_use() || (nm->method()->code() != nm)) ic->set_to_clean(); |
0 | 1222 } |
1223 break; | |
1224 } | |
1225 case relocInfo::static_call_type: { | |
1226 CompiledStaticCall *csc = compiledStaticCall_at(iter.reloc()); | |
1227 CodeBlob *cb = CodeCache::find_blob_unsafe(csc->destination()); | |
1228 if( cb != NULL && cb->is_nmethod() ) { | |
1229 nmethod* nm = (nmethod*)cb; | |
1230 // Clean inline caches pointing to both zombie and not_entrant methods | |
1202 | 1231 if (!nm->is_in_use() || (nm->method()->code() != nm)) csc->set_to_clean(); |
0 | 1232 } |
1233 break; | |
1234 } | |
1235 } | |
1236 } | |
1237 } | |
1238 | |
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1239 // This is a private interface with the sweeper. |
0 | 1240 void nmethod::mark_as_seen_on_stack() { |
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1241 assert(is_alive(), "Must be an alive method"); |
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1242 // Set the traversal mark to ensure that the sweeper does 2 |
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1243 // cleaning passes before moving to zombie. |
0 | 1244 set_stack_traversal_mark(NMethodSweeper::traversal_count()); |
1245 } | |
1246 | |
2342
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1247 // Tell if a non-entrant method can be converted to a zombie (i.e., |
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1248 // there are no activations on the stack, not in use by the VM, |
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|
1249 // and not in use by the ServiceThread) |
0 | 1250 bool nmethod::can_not_entrant_be_converted() { |
1251 assert(is_not_entrant(), "must be a non-entrant method"); | |
1252 | |
1253 // Since the nmethod sweeper only does partial sweep the sweeper's traversal | |
1254 // count can be greater than the stack traversal count before it hits the | |
1255 // nmethod for the second time. | |
2342
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1256 return stack_traversal_mark()+1 < NMethodSweeper::traversal_count() && |
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1257 !is_locked_by_vm(); |
0 | 1258 } |
1259 | |
1260 void nmethod::inc_decompile_count() { | |
9707 | 1261 if (!is_compiled_by_c2() && !is_compiled_by_graal()) return; |
0 | 1262 // Could be gated by ProfileTraps, but do not bother... |
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1263 Method* m = method(); |
0 | 1264 if (m == NULL) return; |
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1265 MethodData* mdo = m->method_data(); |
0 | 1266 if (mdo == NULL) return; |
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1267 // There is a benign race here. See comments in methodData.hpp. |
0 | 1268 mdo->inc_decompile_count(); |
1269 } | |
1270 | |
1271 void nmethod::make_unloaded(BoolObjectClosure* is_alive, oop cause) { | |
1272 | |
1273 post_compiled_method_unload(); | |
1274 | |
1275 // Since this nmethod is being unloaded, make sure that dependencies | |
1276 // recorded in instanceKlasses get flushed and pass non-NULL closure to | |
1277 // indicate that this work is being done during a GC. | |
1278 assert(Universe::heap()->is_gc_active(), "should only be called during gc"); | |
1279 assert(is_alive != NULL, "Should be non-NULL"); | |
1280 // A non-NULL is_alive closure indicates that this is being called during GC. | |
1281 flush_dependencies(is_alive); | |
1282 | |
1283 // Break cycle between nmethod & method | |
1284 if (TraceClassUnloading && WizardMode) { | |
1285 tty->print_cr("[Class unloading: Making nmethod " INTPTR_FORMAT | |
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1286 " unloadable], Method*(" INTPTR_FORMAT |
0 | 1287 "), cause(" INTPTR_FORMAT ")", |
1288 this, (address)_method, (address)cause); | |
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1289 if (!Universe::heap()->is_gc_active()) |
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1290 cause->klass()->print(); |
0 | 1291 } |
941 | 1292 // Unlink the osr method, so we do not look this up again |
1293 if (is_osr_method()) { | |
1294 invalidate_osr_method(); | |
1295 } | |
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1296 // If _method is already NULL the Method* is about to be unloaded, |
0 | 1297 // so we don't have to break the cycle. Note that it is possible to |
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1298 // have the Method* live here, in case we unload the nmethod because |
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1299 // it is pointing to some oop (other than the Method*) being unloaded. |
0 | 1300 if (_method != NULL) { |
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1301 // OSR methods point to the Method*, but the Method* does not |
0 | 1302 // point back! |
1303 if (_method->code() == this) { | |
1304 _method->clear_code(); // Break a cycle | |
1305 } | |
1306 _method = NULL; // Clear the method of this dead nmethod | |
1307 } | |
9707 | 1308 |
1309 #ifdef GRAAL | |
1310 // The method can only be unloaded after the pointer to the installed code | |
1311 // Java wrapper is no longer alive. Here we need to clear out this weak | |
1312 // reference to the dead object. | |
1313 if (_graal_installed_code != NULL) { | |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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|
1314 HotSpotInstalledCode::set_codeBlob(_graal_installed_code, 0); |
9707 | 1315 _graal_installed_code = NULL; |
1316 } | |
1317 #endif | |
1318 | |
0 | 1319 // Make the class unloaded - i.e., change state and notify sweeper |
1538
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1320 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint"); |
0 | 1321 if (is_in_use()) { |
1322 // Transitioning directly from live to unloaded -- so | |
1323 // we need to force a cache clean-up; remember this | |
1324 // for later on. | |
1325 CodeCache::set_needs_cache_clean(true); | |
1326 } | |
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1327 _state = unloaded; |
0 | 1328 |
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1329 // Log the unloading. |
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1330 log_state_change(); |
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1331 |
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1332 // The Method* is gone at this point |
0 | 1333 assert(_method == NULL, "Tautology"); |
1334 | |
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1335 set_osr_link(NULL); |
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1336 //set_scavenge_root_link(NULL); // done by prune_scavenge_root_nmethods |
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1337 NMethodSweeper::report_state_change(this); |
0 | 1338 } |
1339 | |
1340 void nmethod::invalidate_osr_method() { | |
1341 assert(_entry_bci != InvocationEntryBci, "wrong kind of nmethod"); | |
1342 // Remove from list of active nmethods | |
1343 if (method() != NULL) | |
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18fb7da42534
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|
1344 method()->method_holder()->remove_osr_nmethod(this); |
0 | 1345 // Set entry as invalid |
1346 _entry_bci = InvalidOSREntryBci; | |
1347 } | |
1348 | |
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1349 void nmethod::log_state_change() const { |
0 | 1350 if (LogCompilation) { |
1351 if (xtty != NULL) { | |
1352 ttyLocker ttyl; // keep the following output all in one block | |
1644
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1353 if (_state == unloaded) { |
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1354 xtty->begin_elem("make_unloaded thread='" UINTX_FORMAT "'", |
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1355 os::current_thread_id()); |
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1356 } else { |
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1357 xtty->begin_elem("make_not_entrant thread='" UINTX_FORMAT "'%s", |
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1358 os::current_thread_id(), |
1644
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1359 (_state == zombie ? " zombie='1'" : "")); |
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|
1360 } |
0 | 1361 log_identity(xtty); |
1362 xtty->stamp(); | |
1363 xtty->end_elem(); | |
1364 } | |
1365 } | |
1644
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1366 if (PrintCompilation && _state != unloaded) { |
2405
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diff
changeset
|
1367 print_on(tty, _state == zombie ? "made zombie" : "made not entrant"); |
0 | 1368 } |
1369 } | |
1370 | |
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1371 /** |
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1372 * Common functionality for both make_not_entrant and make_zombie |
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1373 */ |
1141 | 1374 bool nmethod::make_not_entrant_or_zombie(unsigned int state) { |
0 | 1375 assert(state == zombie || state == not_entrant, "must be zombie or not_entrant"); |
2342
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1376 assert(!is_zombie(), "should not already be a zombie"); |
0 | 1377 |
1644
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1378 // Make sure neither the nmethod nor the method is flushed in case of a safepoint in code below. |
0 | 1379 nmethodLocker nml(this); |
1644
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1380 methodHandle the_method(method()); |
1726 | 1381 No_Safepoint_Verifier nsv; |
0 | 1382 |
12080 | 1383 // during patching, depending on the nmethod state we must notify the GC that |
1384 // code has been unloaded, unregistering it. We cannot do this right while | |
1385 // holding the Patching_lock because we need to use the CodeCache_lock. This | |
1386 // would be prone to deadlocks. | |
1387 // This flag is used to remember whether we need to later lock and unregister. | |
1388 bool nmethod_needs_unregister = false; | |
1389 | |
0 | 1390 { |
1109
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1391 // invalidate osr nmethod before acquiring the patching lock since |
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1392 // they both acquire leaf locks and we don't want a deadlock. |
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1393 // This logic is equivalent to the logic below for patching the |
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1394 // verified entry point of regular methods. |
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1395 if (is_osr_method()) { |
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1396 // this effectively makes the osr nmethod not entrant |
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1397 invalidate_osr_method(); |
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1398 } |
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1399 |
0 | 1400 // Enter critical section. Does not block for safepoint. |
1401 MutexLockerEx pl(Patching_lock, Mutex::_no_safepoint_check_flag); | |
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1402 |
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1403 if (_state == state) { |
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1404 // another thread already performed this transition so nothing |
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1405 // to do, but return false to indicate this. |
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1406 return false; |
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|
1407 } |
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1408 |
0 | 1409 // The caller can be calling the method statically or through an inline |
1410 // cache call. | |
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1411 if (!is_osr_method() && !is_not_entrant()) { |
9707 | 1412 address stub = SharedRuntime::get_handle_wrong_method_stub(); |
1413 NativeJump::patch_verified_entry(entry_point(), verified_entry_point(), stub); | |
0 | 1414 } |
1415 | |
1644
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1416 if (is_in_use()) { |
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1417 // It's a true state change, so mark the method as decompiled. |
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1418 // Do it only for transition from alive. |
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1419 inc_decompile_count(); |
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1420 } |
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1421 |
12080 | 1422 // If the state is becoming a zombie, signal to unregister the nmethod with |
1423 // the heap. | |
1424 // This nmethod may have already been unloaded during a full GC. | |
1425 if ((state == zombie) && !is_unloaded()) { | |
1426 nmethod_needs_unregister = true; | |
1427 } | |
1428 | |
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1429 // Must happen before state change. Otherwise we have a race condition in |
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1430 // nmethod::can_not_entrant_be_converted(). I.e., a method can immediately |
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1431 // transition its state from 'not_entrant' to 'zombie' without having to wait |
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1432 // for stack scanning. |
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1433 if (state == not_entrant) { |
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1434 mark_as_seen_on_stack(); |
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|
1435 OrderAccess::storestore(); |
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1436 } |
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1437 |
0 | 1438 // Change state |
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1439 _state = state; |
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1440 |
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1441 // Log the transition once |
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1442 log_state_change(); |
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1443 |
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1444 // Remove nmethod from method. |
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changeset
|
1445 // We need to check if both the _code and _from_compiled_code_entry_point |
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1446 // refer to this nmethod because there is a race in setting these two fields |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1447 // in Method* as seen in bugid 4947125. |
1644
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1448 // If the vep() points to the zombie nmethod, the memory for the nmethod |
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1449 // could be flushed and the compiler and vtable stubs could still call |
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1450 // through it. |
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1451 if (method() != NULL && (method()->code() == this || |
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1452 method()->from_compiled_entry() == verified_entry_point())) { |
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1453 HandleMark hm; |
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1454 method()->clear_code(); |
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1455 } |
0 | 1456 } // leave critical region under Patching_lock |
1457 | |
1538
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1490
diff
changeset
|
1458 // When the nmethod becomes zombie it is no longer alive so the |
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1490
diff
changeset
|
1459 // dependencies must be flushed. nmethods in the not_entrant |
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1490
diff
changeset
|
1460 // state will be flushed later when the transition to zombie |
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1490
diff
changeset
|
1461 // happens or they get unloaded. |
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1490
diff
changeset
|
1462 if (state == zombie) { |
1726 | 1463 { |
1464 // Flushing dependecies must be done before any possible | |
1465 // safepoint can sneak in, otherwise the oops used by the | |
1466 // dependency logic could have become stale. | |
1467 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
12080 | 1468 if (nmethod_needs_unregister) { |
1469 Universe::heap()->unregister_nmethod(this); | |
1470 } | |
1726 | 1471 flush_dependencies(NULL); |
1472 } | |
1644
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1473 |
2342
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2321
diff
changeset
|
1474 // 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
|
1475 // 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
|
1476 // 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
|
1477 // 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:
2321
diff
changeset
|
1478 // 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
|
1479 post_compiled_method_unload(); |
1726 | 1480 |
1481 #ifdef ASSERT | |
1482 // It's no longer safe to access the oops section since zombie | |
1483 // nmethods aren't scanned for GC. | |
1484 _oops_are_stale = true; | |
1485 #endif | |
12161
e1fbb86b47e4
8016277: Crash in nmethod::is_compiled_by_c1() on x86
roland
parents:
12080
diff
changeset
|
1486 // 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
|
1487 // nmethod is in zombie state |
e1fbb86b47e4
8016277: Crash in nmethod::is_compiled_by_c1() on x86
roland
parents:
12080
diff
changeset
|
1488 set_method(NULL); |
1538
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1490
diff
changeset
|
1489 } else { |
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1490
diff
changeset
|
1490 assert(state == not_entrant, "other cases may need to be handled differently"); |
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1490
diff
changeset
|
1491 } |
12414
98031e66de15
Fix unittests
Christos Kotselidis <christos.kotselidis@oracle.com>
parents:
12411
diff
changeset
|
1492 #ifdef GRAAL |
13230
01080e31692d
fixed crash when TraceCreateZombies is enabled
Doug Simon <doug.simon@oracle.com>
parents:
13102
diff
changeset
|
1493 if (_graal_installed_code != NULL) { |
01080e31692d
fixed crash when TraceCreateZombies is enabled
Doug Simon <doug.simon@oracle.com>
parents:
13102
diff
changeset
|
1494 // Break the link between nmethod and HotSpotInstalledCode such that the nmethod can subsequently be flushed safely. |
01080e31692d
fixed crash when TraceCreateZombies is enabled
Doug Simon <doug.simon@oracle.com>
parents:
13102
diff
changeset
|
1495 HotSpotInstalledCode::set_codeBlob(_graal_installed_code, 0); |
01080e31692d
fixed crash when TraceCreateZombies is enabled
Doug Simon <doug.simon@oracle.com>
parents:
13102
diff
changeset
|
1496 } |
12414
98031e66de15
Fix unittests
Christos Kotselidis <christos.kotselidis@oracle.com>
parents:
12411
diff
changeset
|
1497 #endif |
1538
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1490
diff
changeset
|
1498 |
0 | 1499 if (TraceCreateZombies) { |
9707 | 1500 ResourceMark m; |
13230
01080e31692d
fixed crash when TraceCreateZombies is enabled
Doug Simon <doug.simon@oracle.com>
parents:
13102
diff
changeset
|
1501 tty->print_cr("nmethod <" INTPTR_FORMAT "> %s code made %s", this, this->method() ? this->method()->name_and_sig_as_C_string() : "null", (state == not_entrant) ? "not entrant" : "zombie"); |
0 | 1502 } |
1503 | |
13074
78da3894b86f
8027593: performance drop with constrained codecache starting with hs25 b111
anoll
parents:
13071
diff
changeset
|
1504 NMethodSweeper::report_state_change(this); |
1109
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1505 return true; |
0 | 1506 } |
1507 | |
1508 void nmethod::flush() { | |
1509 // Note that there are no valid oops in the nmethod anymore. | |
1510 assert(is_zombie() || (is_osr_method() && is_unloaded()), "must be a zombie method"); | |
1511 assert(is_marked_for_reclamation() || (is_osr_method() && is_unloaded()), "must be marked for reclamation"); | |
1512 | |
1513 assert (!is_locked_by_vm(), "locked methods shouldn't be flushed"); | |
1538
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1490
diff
changeset
|
1514 assert_locked_or_safepoint(CodeCache_lock); |
0 | 1515 |
1516 // completely deallocate this method | |
4872
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4006
diff
changeset
|
1517 Events::log(JavaThread::current(), "flushing nmethod " INTPTR_FORMAT, this); |
0 | 1518 if (PrintMethodFlushing) { |
1202 | 1519 tty->print_cr("*flushing nmethod %3d/" INTPTR_FORMAT ". Live blobs:" UINT32_FORMAT "/Free CodeCache:" SIZE_FORMAT "Kb", |
1520 _compile_id, this, CodeCache::nof_blobs(), CodeCache::unallocated_capacity()/1024); | |
0 | 1521 } |
1522 | |
1523 // We need to deallocate any ExceptionCache data. | |
1524 // Note that we do not need to grab the nmethod lock for this, it | |
1525 // better be thread safe if we're disposing of it! | |
1526 ExceptionCache* ec = exception_cache(); | |
1527 set_exception_cache(NULL); | |
1528 while(ec != NULL) { | |
1529 ExceptionCache* next = ec->next(); | |
1530 delete ec; | |
1531 ec = next; | |
1532 } | |
1533 | |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1534 if (on_scavenge_root_list()) { |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1535 CodeCache::drop_scavenge_root_nmethod(this); |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1536 } |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1537 |
1692 | 1538 #ifdef SHARK |
1845
a222fcfba398
6990549: Zero and Shark fixes after 6978355 and 6953144
twisti
parents:
1784
diff
changeset
|
1539 ((SharkCompiler *) compiler())->free_compiled_method(insts_begin()); |
1692 | 1540 #endif // SHARK |
1541 | |
0 | 1542 ((CodeBlob*)(this))->flush(); |
1543 | |
1544 CodeCache::free(this); | |
1545 } | |
1546 | |
1547 | |
1548 // | |
1549 // Notify all classes this nmethod is dependent on that it is no | |
1550 // longer dependent. This should only be called in two situations. | |
1551 // First, when a nmethod transitions to a zombie all dependents need | |
1552 // to be clear. Since zombification happens at a safepoint there's no | |
1553 // synchronization issues. The second place is a little more tricky. | |
1554 // During phase 1 of mark sweep class unloading may happen and as a | |
1555 // result some nmethods may get unloaded. In this case the flushing | |
1556 // of dependencies must happen during phase 1 since after GC any | |
1557 // dependencies in the unloaded nmethod won't be updated, so | |
1558 // traversing the dependency information in unsafe. In that case this | |
1559 // function is called with a non-NULL argument and this function only | |
1560 // notifies instanceKlasses that are reachable | |
1561 | |
1562 void nmethod::flush_dependencies(BoolObjectClosure* is_alive) { | |
1538
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1490
diff
changeset
|
1563 assert_locked_or_safepoint(CodeCache_lock); |
0 | 1564 assert(Universe::heap()->is_gc_active() == (is_alive != NULL), |
1565 "is_alive is non-NULL if and only if we are called during GC"); | |
1566 if (!has_flushed_dependencies()) { | |
1567 set_has_flushed_dependencies(); | |
1568 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1569 Klass* klass = deps.context_type(); |
0 | 1570 if (klass == NULL) continue; // ignore things like evol_method |
1571 | |
1572 // During GC the is_alive closure is non-NULL, and is used to | |
1573 // determine liveness of dependees that need to be updated. | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1574 if (is_alive == NULL || klass->is_loader_alive(is_alive)) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1575 InstanceKlass::cast(klass)->remove_dependent_nmethod(this); |
0 | 1576 } |
1577 } | |
1578 } | |
1579 } | |
1580 | |
1581 | |
1582 // 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
|
1583 bool nmethod::can_unload(BoolObjectClosure* is_alive, oop* root, bool unloading_occurred) { |
0 | 1584 assert(root != NULL, "just checking"); |
1585 oop obj = *root; | |
1586 if (obj == NULL || is_alive->do_object_b(obj)) { | |
1587 return false; | |
1588 } | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1589 |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1590 // If ScavengeRootsInCode is true, an nmethod might be unloaded |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1591 // simply because one of its constant oops has gone dead. |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1592 // 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
|
1593 assert(unloading_occurred || ScavengeRootsInCode, "Inconsistency in unloading"); |
0 | 1594 make_unloaded(is_alive, obj); |
1595 return true; | |
1596 } | |
1597 | |
1598 // ------------------------------------------------------------------ | |
1599 // post_compiled_method_load_event | |
1600 // new method for install_code() path | |
1601 // Transfer information from compilation to jvmti | |
1602 void nmethod::post_compiled_method_load_event() { | |
1603 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1604 Method* moop = method(); |
4006 | 1605 HOTSPOT_COMPILED_METHOD_LOAD( |
1606 (char *) moop->klass_name()->bytes(), | |
1607 moop->klass_name()->utf8_length(), | |
1608 (char *) moop->name()->bytes(), | |
1609 moop->name()->utf8_length(), | |
1610 (char *) moop->signature()->bytes(), | |
1611 moop->signature()->utf8_length(), | |
1612 insts_begin(), insts_size()); | |
0 | 1613 |
1616
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1614 if (JvmtiExport::should_post_compiled_method_load() || |
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1615 JvmtiExport::should_post_compiled_method_unload()) { |
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1616 get_and_cache_jmethod_id(); |
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1617 } |
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1618 |
0 | 1619 if (JvmtiExport::should_post_compiled_method_load()) { |
2195
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1620 // Let the Service thread (which is a real Java thread) post the event |
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1621 MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag); |
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1622 JvmtiDeferredEventQueue::enqueue( |
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1623 JvmtiDeferredEvent::compiled_method_load_event(this)); |
0 | 1624 } |
1625 } | |
1626 | |
1616
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1627 jmethodID nmethod::get_and_cache_jmethod_id() { |
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1628 if (_jmethod_id == NULL) { |
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1629 // Cache the jmethod_id since it can no longer be looked up once the |
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1630 // method itself has been marked for unloading. |
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1631 _jmethod_id = method()->jmethod_id(); |
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1632 } |
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1633 return _jmethod_id; |
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1634 } |
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1635 |
0 | 1636 void nmethod::post_compiled_method_unload() { |
1577
852d0157c696
6956931: assert(SafepointSynchronize::is_at_safepoint()) failed: must be executed at a safepoint
never
parents:
1563
diff
changeset
|
1637 if (unload_reported()) { |
852d0157c696
6956931: assert(SafepointSynchronize::is_at_safepoint()) failed: must be executed at a safepoint
never
parents:
1563
diff
changeset
|
1638 // During unloading we transition to unloaded and then to zombie |
852d0157c696
6956931: assert(SafepointSynchronize::is_at_safepoint()) failed: must be executed at a safepoint
never
parents:
1563
diff
changeset
|
1639 // and the unloading is reported during the first transition. |
852d0157c696
6956931: assert(SafepointSynchronize::is_at_safepoint()) failed: must be executed at a safepoint
never
parents:
1563
diff
changeset
|
1640 return; |
852d0157c696
6956931: assert(SafepointSynchronize::is_at_safepoint()) failed: must be executed at a safepoint
never
parents:
1563
diff
changeset
|
1641 } |
852d0157c696
6956931: assert(SafepointSynchronize::is_at_safepoint()) failed: must be executed at a safepoint
never
parents:
1563
diff
changeset
|
1642 |
0 | 1643 assert(_method != NULL && !is_unloaded(), "just checking"); |
1644 DTRACE_METHOD_UNLOAD_PROBE(method()); | |
1645 | |
1646 // If a JVMTI agent has enabled the CompiledMethodUnload event then | |
1616
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1647 // post the event. Sometime later this nmethod will be made a zombie |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1648 // by the sweeper but the Method* will not be valid at that point. |
1616
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1649 // If the _jmethod_id is null then no load event was ever requested |
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1650 // so don't bother posting the unload. The main reason for this is |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1651 // that the jmethodID is a weak reference to the Method* so if |
1616
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1652 // it's being unloaded there's no way to look it up since the weak |
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1653 // ref will have been cleared. |
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1654 if (_jmethod_id != NULL && JvmtiExport::should_post_compiled_method_unload()) { |
0 | 1655 assert(!unload_reported(), "already unloaded"); |
2195
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1656 JvmtiDeferredEvent event = |
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1657 JvmtiDeferredEvent::compiled_method_unload_event(this, |
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1658 _jmethod_id, insts_begin()); |
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1659 if (SafepointSynchronize::is_at_safepoint()) { |
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1660 // Don't want to take the queueing lock. Add it as pending and |
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1661 // it will get enqueued later. |
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1662 JvmtiDeferredEventQueue::add_pending_event(event); |
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1663 } else { |
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1664 MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag); |
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1665 JvmtiDeferredEventQueue::enqueue(event); |
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1666 } |
0 | 1667 } |
1668 | |
1669 // The JVMTI CompiledMethodUnload event can be enabled or disabled at | |
1670 // any time. As the nmethod is being unloaded now we mark it has | |
1671 // having the unload event reported - this will ensure that we don't | |
1672 // attempt to report the event in the unlikely scenario where the | |
1673 // event is enabled at the time the nmethod is made a zombie. | |
1674 set_unload_reported(); | |
1675 } | |
1676 | |
1677 // This is called at the end of the strong tracing/marking phase of a | |
1678 // GC to unload an nmethod if it contains otherwise unreachable | |
1679 // oops. | |
1680 | |
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1681 void nmethod::do_unloading(BoolObjectClosure* is_alive, bool unloading_occurred) { |
0 | 1682 // Make sure the oop's ready to receive visitors |
1683 assert(!is_zombie() && !is_unloaded(), | |
1684 "should not call follow on zombie or unloaded nmethod"); | |
1685 | |
1686 // If the method is not entrant then a JMP is plastered over the | |
1687 // first few bytes. If an oop in the old code was there, that oop | |
1688 // should not get GC'd. Skip the first few bytes of oops on | |
1689 // not-entrant methods. | |
1690 address low_boundary = verified_entry_point(); | |
1691 if (is_not_entrant()) { | |
1692 low_boundary += NativeJump::instruction_size; | |
1693 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
1694 // (See comment above.) | |
1695 } | |
1696 | |
1697 // The RedefineClasses() API can cause the class unloading invariant | |
1698 // to no longer be true. See jvmtiExport.hpp for details. | |
1699 // Also, leave a debugging breadcrumb in local flag. | |
1700 bool a_class_was_redefined = JvmtiExport::has_redefined_a_class(); | |
1701 if (a_class_was_redefined) { | |
1702 // This set of the unloading_occurred flag is done before the | |
1703 // call to post_compiled_method_unload() so that the unloading | |
1704 // of this nmethod is reported. | |
1705 unloading_occurred = true; | |
1706 } | |
1707 | |
9707 | 1708 #ifdef GRAAL |
1709 // Follow Graal method | |
1710 if (_graal_installed_code != NULL) { | |
1711 if (HotSpotNmethod::isDefault(_graal_installed_code)) { | |
1712 if (!is_alive->do_object_b(_graal_installed_code)) { | |
1713 _graal_installed_code = NULL; | |
1714 } | |
1715 } else { | |
1716 if (can_unload(is_alive, (oop*)&_graal_installed_code, unloading_occurred)) { | |
1717 return; | |
1718 } | |
1719 } | |
1720 } | |
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1721 |
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1722 if (_speculation_log != NULL) { |
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1723 if (!is_alive->do_object_b(_speculation_log)) { |
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1724 _speculation_log = NULL; |
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1725 } |
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1726 } |
9707 | 1727 #endif |
1728 | |
0 | 1729 // Exception cache |
1730 ExceptionCache* ec = exception_cache(); | |
1731 while (ec != NULL) { | |
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1732 Klass* ex_klass = ec->exception_type(); |
0 | 1733 ExceptionCache* next_ec = ec->next(); |
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1734 if (ex_klass != NULL && !ex_klass->is_loader_alive(is_alive)) { |
0 | 1735 remove_from_exception_cache(ec); |
1736 } | |
1737 ec = next_ec; | |
1738 } | |
1739 | |
1740 // If class unloading occurred we first iterate over all inline caches and | |
1741 // clear ICs where the cached oop is referring to an unloaded klass or method. | |
1742 // The remaining live cached oops will be traversed in the relocInfo::oop_type | |
1743 // iteration below. | |
1744 if (unloading_occurred) { | |
1745 RelocIterator iter(this, low_boundary); | |
1746 while(iter.next()) { | |
1747 if (iter.type() == relocInfo::virtual_call_type) { | |
1748 CompiledIC *ic = CompiledIC_at(iter.reloc()); | |
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1749 if (ic->is_icholder_call()) { |
0 | 1750 // The only exception is compiledICHolder oops which may |
1751 // yet be marked below. (We check this further below). | |
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1752 CompiledICHolder* cichk_oop = ic->cached_icholder(); |
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1753 if (cichk_oop->holder_method()->method_holder()->is_loader_alive(is_alive) && |
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1754 cichk_oop->holder_klass()->is_loader_alive(is_alive)) { |
13441 | 1755 continue; |
1756 } | |
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1757 } else { |
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1758 Metadata* ic_oop = ic->cached_metadata(); |
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1759 if (ic_oop != NULL) { |
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1760 if (ic_oop->is_klass()) { |
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1761 if (((Klass*)ic_oop)->is_loader_alive(is_alive)) { |
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1762 continue; |
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1763 } |
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1764 } else if (ic_oop->is_method()) { |
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1765 if (((Method*)ic_oop)->method_holder()->is_loader_alive(is_alive)) { |
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1766 continue; |
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1767 } |
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1768 } else { |
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1769 ShouldNotReachHere(); |
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1770 } |
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1771 } |
13441 | 1772 } |
1773 ic->set_to_clean(); | |
0 | 1774 } |
1775 } | |
1776 } | |
1777 | |
1778 // Compiled code | |
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1779 { |
0 | 1780 RelocIterator iter(this, low_boundary); |
1781 while (iter.next()) { | |
1782 if (iter.type() == relocInfo::oop_type) { | |
1783 oop_Relocation* r = iter.oop_reloc(); | |
1784 // In this loop, we must only traverse those oops directly embedded in | |
1785 // the code. Other oops (oop_index>0) are seen as part of scopes_oops. | |
1786 assert(1 == (r->oop_is_immediate()) + | |
1787 (r->oop_addr() >= oops_begin() && r->oop_addr() < oops_end()), | |
1788 "oop must be found in exactly one place"); | |
1789 if (r->oop_is_immediate() && r->oop_value() != NULL) { | |
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1790 if (can_unload(is_alive, r->oop_addr(), unloading_occurred)) { |
0 | 1791 return; |
1792 } | |
1793 } | |
1794 } | |
1795 } | |
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1796 } |
0 | 1797 |
1798 | |
1799 // Scopes | |
1800 for (oop* p = oops_begin(); p < oops_end(); p++) { | |
1801 if (*p == Universe::non_oop_word()) continue; // skip non-oops | |
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1802 if (can_unload(is_alive, p, unloading_occurred)) { |
0 | 1803 return; |
1804 } | |
1805 } | |
1806 | |
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1807 // Ensure that all metadata is still alive |
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1808 verify_metadata_loaders(low_boundary, is_alive); |
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1809 } |
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1810 |
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1811 #ifdef ASSERT |
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1812 |
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1813 class CheckClass : AllStatic { |
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1814 static BoolObjectClosure* _is_alive; |
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1815 |
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1816 // Check class_loader is alive for this bit of metadata. |
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1817 static void check_class(Metadata* md) { |
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1818 Klass* klass = NULL; |
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1819 if (md->is_klass()) { |
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1820 klass = ((Klass*)md); |
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1821 } else if (md->is_method()) { |
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1822 klass = ((Method*)md)->method_holder(); |
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1823 } else if (md->is_methodData()) { |
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1824 klass = ((MethodData*)md)->method()->method_holder(); |
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1825 } else { |
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1826 md->print(); |
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1827 ShouldNotReachHere(); |
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1828 } |
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1829 assert(klass->is_loader_alive(_is_alive), "must be alive"); |
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1830 } |
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1831 public: |
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1832 static void do_check_class(BoolObjectClosure* is_alive, nmethod* nm) { |
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1833 assert(SafepointSynchronize::is_at_safepoint(), "this is only ok at safepoint"); |
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1834 _is_alive = is_alive; |
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1835 nm->metadata_do(check_class); |
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1836 } |
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1837 }; |
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1838 |
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1839 // This is called during a safepoint so can use static data |
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1840 BoolObjectClosure* CheckClass::_is_alive = NULL; |
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1841 #endif // ASSERT |
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1842 |
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1843 |
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1844 // Processing of oop references should have been sufficient to keep |
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1845 // all strong references alive. Any weak references should have been |
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1846 // cleared as well. Visit all the metadata and ensure that it's |
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1847 // really alive. |
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1848 void nmethod::verify_metadata_loaders(address low_boundary, BoolObjectClosure* is_alive) { |
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1849 #ifdef ASSERT |
0 | 1850 RelocIterator iter(this, low_boundary); |
1851 while (iter.next()) { | |
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1852 // static_stub_Relocations may have dangling references to |
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1853 // Method*s so trim them out here. Otherwise it looks like |
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1854 // compiled code is maintaining a link to dead metadata. |
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1855 address static_call_addr = NULL; |
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1856 if (iter.type() == relocInfo::opt_virtual_call_type) { |
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1857 CompiledIC* cic = CompiledIC_at(iter.reloc()); |
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1858 if (!cic->is_call_to_interpreted()) { |
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1859 static_call_addr = iter.addr(); |
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1860 } |
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1861 } else if (iter.type() == relocInfo::static_call_type) { |
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1862 CompiledStaticCall* csc = compiledStaticCall_at(iter.reloc()); |
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1863 if (!csc->is_call_to_interpreted()) { |
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1864 static_call_addr = iter.addr(); |
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1865 } |
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1866 } |
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1867 if (static_call_addr != NULL) { |
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1868 RelocIterator sciter(this, low_boundary); |
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1869 while (sciter.next()) { |
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1870 if (sciter.type() == relocInfo::static_stub_type && |
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1871 sciter.static_stub_reloc()->static_call() == static_call_addr) { |
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1872 sciter.static_stub_reloc()->clear_inline_cache(); |
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1873 } |
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1874 } |
0 | 1875 } |
1876 } | |
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1877 // Check that the metadata embedded in the nmethod is alive |
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1878 CheckClass::do_check_class(is_alive, this); |
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1879 #endif |
0 | 1880 } |
1881 | |
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1882 |
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1883 // Iterate over metadata calling this function. Used by RedefineClasses |
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1884 void nmethod::metadata_do(void f(Metadata*)) { |
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1885 address low_boundary = verified_entry_point(); |
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1886 if (is_not_entrant()) { |
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1887 low_boundary += NativeJump::instruction_size; |
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1888 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. |
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1889 // (See comment above.) |
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1890 } |
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1891 { |
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1892 // Visit all immediate references that are embedded in the instruction stream. |
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1893 RelocIterator iter(this, low_boundary); |
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1894 while (iter.next()) { |
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1895 if (iter.type() == relocInfo::metadata_type ) { |
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1896 metadata_Relocation* r = iter.metadata_reloc(); |
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1897 // In this lmetadata, we must only follow those metadatas directly embedded in |
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1898 // the code. Other metadatas (oop_index>0) are seen as part of |
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1899 // the metadata section below. |
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1900 assert(1 == (r->metadata_is_immediate()) + |
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1901 (r->metadata_addr() >= metadata_begin() && r->metadata_addr() < metadata_end()), |
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1902 "metadata must be found in exactly one place"); |
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1903 if (r->metadata_is_immediate() && r->metadata_value() != NULL) { |
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1904 Metadata* md = r->metadata_value(); |
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1905 f(md); |
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1906 } |
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1907 } else if (iter.type() == relocInfo::virtual_call_type) { |
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1908 // Check compiledIC holders associated with this nmethod |
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1909 CompiledIC *ic = CompiledIC_at(iter.reloc()); |
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1910 if (ic->is_icholder_call()) { |
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1911 CompiledICHolder* cichk = ic->cached_icholder(); |
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1912 f(cichk->holder_method()); |
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1913 f(cichk->holder_klass()); |
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1914 } else { |
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1915 Metadata* ic_oop = ic->cached_metadata(); |
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1916 if (ic_oop != NULL) { |
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1917 f(ic_oop); |
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1918 } |
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1919 } |
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1920 } |
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1921 } |
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1922 } |
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1923 |
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1924 // Visit the metadata section |
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1925 for (Metadata** p = metadata_begin(); p < metadata_end(); p++) { |
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1926 if (*p == Universe::non_oop_word() || *p == NULL) continue; // skip non-oops |
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1927 Metadata* md = *p; |
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1928 f(md); |
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1929 } |
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1930 |
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1931 // Call function Method*, not embedded in these other places. |
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1932 if (_method != NULL) f(_method); |
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1933 } |
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1934 |
12080 | 1935 void nmethod::oops_do(OopClosure* f, bool allow_zombie) { |
0 | 1936 // make sure the oops ready to receive visitors |
12080 | 1937 assert(allow_zombie || !is_zombie(), "should not call follow on zombie nmethod"); |
1938 assert(!is_unloaded(), "should not call follow on unloaded nmethod"); | |
0 | 1939 |
1940 // If the method is not entrant or zombie then a JMP is plastered over the | |
1941 // first few bytes. If an oop in the old code was there, that oop | |
1942 // should not get GC'd. Skip the first few bytes of oops on | |
1943 // not-entrant methods. | |
1944 address low_boundary = verified_entry_point(); | |
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1945 if (is_not_entrant() || is_zombie()) { |
0 | 1946 low_boundary += NativeJump::instruction_size; |
1947 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
1948 // (See comment above.) | |
1949 } | |
1950 | |
9707 | 1951 #ifdef GRAAL |
1952 if (_graal_installed_code != NULL) { | |
1953 f->do_oop((oop*) &_graal_installed_code); | |
1954 } | |
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1955 if (_speculation_log != NULL) { |
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1956 f->do_oop((oop*) &_speculation_log); |
9707 | 1957 } |
1958 #endif | |
1959 | |
0 | 1960 RelocIterator iter(this, low_boundary); |
941 | 1961 |
0 | 1962 while (iter.next()) { |
1963 if (iter.type() == relocInfo::oop_type ) { | |
1964 oop_Relocation* r = iter.oop_reloc(); | |
1965 // In this loop, we must only follow those oops directly embedded in | |
1966 // the code. Other oops (oop_index>0) are seen as part of scopes_oops. | |
941 | 1967 assert(1 == (r->oop_is_immediate()) + |
1968 (r->oop_addr() >= oops_begin() && r->oop_addr() < oops_end()), | |
1969 "oop must be found in exactly one place"); | |
0 | 1970 if (r->oop_is_immediate() && r->oop_value() != NULL) { |
1971 f->do_oop(r->oop_addr()); | |
1972 } | |
1973 } | |
1974 } | |
1975 | |
1976 // Scopes | |
989
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1977 // This includes oop constants not inlined in the code stream. |
0 | 1978 for (oop* p = oops_begin(); p < oops_end(); p++) { |
1979 if (*p == Universe::non_oop_word()) continue; // skip non-oops | |
1980 f->do_oop(p); | |
1981 } | |
1982 } | |
1983 | |
989
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1984 #define NMETHOD_SENTINEL ((nmethod*)badAddress) |
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1985 |
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1986 nmethod* volatile nmethod::_oops_do_mark_nmethods; |
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1987 |
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1988 // An nmethod is "marked" if its _mark_link is set non-null. |
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1989 // Even if it is the end of the linked list, it will have a non-null link value, |
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1990 // as long as it is on the list. |
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1991 // This code must be MP safe, because it is used from parallel GC passes. |
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1992 bool nmethod::test_set_oops_do_mark() { |
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1993 assert(nmethod::oops_do_marking_is_active(), "oops_do_marking_prologue must be called"); |
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1994 nmethod* observed_mark_link = _oops_do_mark_link; |
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1995 if (observed_mark_link == NULL) { |
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1996 // Claim this nmethod for this thread to mark. |
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1997 observed_mark_link = (nmethod*) |
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1998 Atomic::cmpxchg_ptr(NMETHOD_SENTINEL, &_oops_do_mark_link, NULL); |
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1999 if (observed_mark_link == NULL) { |
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2000 |
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2001 // Atomically append this nmethod (now claimed) to the head of the list: |
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2002 nmethod* observed_mark_nmethods = _oops_do_mark_nmethods; |
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2003 for (;;) { |
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2004 nmethod* required_mark_nmethods = observed_mark_nmethods; |
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2005 _oops_do_mark_link = required_mark_nmethods; |
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2006 observed_mark_nmethods = (nmethod*) |
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2007 Atomic::cmpxchg_ptr(this, &_oops_do_mark_nmethods, required_mark_nmethods); |
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2008 if (observed_mark_nmethods == required_mark_nmethods) |
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2009 break; |
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2010 } |
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2011 // Mark was clear when we first saw this guy. |
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2012 NOT_PRODUCT(if (TraceScavenge) print_on(tty, "oops_do, mark")); |
989
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2013 return false; |
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2014 } |
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2015 } |
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2016 // On fall through, another racing thread marked this nmethod before we did. |
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2017 return true; |
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2018 } |
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2019 |
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2020 void nmethod::oops_do_marking_prologue() { |
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2021 NOT_PRODUCT(if (TraceScavenge) tty->print_cr("[oops_do_marking_prologue")); |
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2022 assert(_oops_do_mark_nmethods == NULL, "must not call oops_do_marking_prologue twice in a row"); |
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2023 // We use cmpxchg_ptr instead of regular assignment here because the user |
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2024 // may fork a bunch of threads, and we need them all to see the same state. |
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2025 void* observed = Atomic::cmpxchg_ptr(NMETHOD_SENTINEL, &_oops_do_mark_nmethods, NULL); |
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2026 guarantee(observed == NULL, "no races in this sequential code"); |
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2027 } |
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2028 |
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2029 void nmethod::oops_do_marking_epilogue() { |
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2030 assert(_oops_do_mark_nmethods != NULL, "must not call oops_do_marking_epilogue twice in a row"); |
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2031 nmethod* cur = _oops_do_mark_nmethods; |
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2032 while (cur != NMETHOD_SENTINEL) { |
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2033 assert(cur != NULL, "not NULL-terminated"); |
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2034 nmethod* next = cur->_oops_do_mark_link; |
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2035 cur->_oops_do_mark_link = NULL; |
2375
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2036 cur->fix_oop_relocations(); |
2405
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2037 NOT_PRODUCT(if (TraceScavenge) cur->print_on(tty, "oops_do, unmark")); |
989
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2038 cur = next; |
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2039 } |
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2040 void* required = _oops_do_mark_nmethods; |
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2041 void* observed = Atomic::cmpxchg_ptr(NULL, &_oops_do_mark_nmethods, required); |
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2042 guarantee(observed == required, "no races in this sequential code"); |
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2043 NOT_PRODUCT(if (TraceScavenge) tty->print_cr("oops_do_marking_epilogue]")); |
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2044 } |
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2045 |
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2046 class DetectScavengeRoot: public OopClosure { |
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2047 bool _detected_scavenge_root; |
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2048 public: |
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2049 DetectScavengeRoot() : _detected_scavenge_root(false) |
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2050 { NOT_PRODUCT(_print_nm = NULL); } |
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2051 bool detected_scavenge_root() { return _detected_scavenge_root; } |
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2052 virtual void do_oop(oop* p) { |
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2053 if ((*p) != NULL && (*p)->is_scavengable()) { |
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2054 NOT_PRODUCT(maybe_print(p)); |
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2055 _detected_scavenge_root = true; |
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2056 } |
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2057 } |
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2058 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
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2059 |
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2060 #ifndef PRODUCT |
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2061 nmethod* _print_nm; |
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2062 void maybe_print(oop* p) { |
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2063 if (_print_nm == NULL) return; |
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2064 if (!_detected_scavenge_root) _print_nm->print_on(tty, "new scavenge root"); |
3377
2aa9ddbb9e60
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2065 tty->print_cr(""PTR_FORMAT"[offset=%d] detected scavengable oop "PTR_FORMAT" (found at "PTR_FORMAT")", |
989
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2066 _print_nm, (int)((intptr_t)p - (intptr_t)_print_nm), |
12316
190899198332
7195622: CheckUnhandledOops has limited usefulness now
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12175
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|
2067 (void *)(*p), (intptr_t)p); |
989
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2068 (*p)->print(); |
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2069 } |
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|
2070 #endif //PRODUCT |
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2071 }; |
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2072 |
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2073 bool nmethod::detect_scavenge_root_oops() { |
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2074 DetectScavengeRoot detect_scavenge_root; |
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2075 NOT_PRODUCT(if (TraceScavenge) detect_scavenge_root._print_nm = this); |
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2076 oops_do(&detect_scavenge_root); |
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2077 return detect_scavenge_root.detected_scavenge_root(); |
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2078 } |
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|
2079 |
0 | 2080 // Method that knows how to preserve outgoing arguments at call. This method must be |
2081 // called with a frame corresponding to a Java invoke | |
2082 void nmethod::preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { | |
1692 | 2083 #ifndef SHARK |
0 | 2084 if (!method()->is_native()) { |
2085 SimpleScopeDesc ssd(this, fr.pc()); | |
2142 | 2086 Bytecode_invoke call(ssd.method(), ssd.bci()); |
10390 | 2087 bool has_receiver = call.has_receiver(); |
2088 bool has_appendix = call.has_appendix(); | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2142
diff
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|
2089 Symbol* signature = call.signature(); |
10390 | 2090 fr.oops_compiled_arguments_do(signature, has_receiver, has_appendix, reg_map, f); |
0 | 2091 } |
1692 | 2092 #endif // !SHARK |
0 | 2093 } |
2094 | |
2095 | |
2096 oop nmethod::embeddedOop_at(u_char* p) { | |
2349
4cd9add59b1e
7024866: # assert(limit == NULL || limit <= nm->code_end()) failed: in bounds
never
parents:
2321
diff
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|
2097 RelocIterator iter(this, p, p + 1); |
0 | 2098 while (iter.next()) |
2099 if (iter.type() == relocInfo::oop_type) { | |
2100 return iter.oop_reloc()->oop_value(); | |
2101 } | |
2102 return NULL; | |
2103 } | |
2104 | |
2105 | |
2106 inline bool includes(void* p, void* from, void* to) { | |
2107 return from <= p && p < to; | |
2108 } | |
2109 | |
2110 | |
2111 void nmethod::copy_scopes_pcs(PcDesc* pcs, int count) { | |
2112 assert(count >= 2, "must be sentinel values, at least"); | |
2113 | |
2114 #ifdef ASSERT | |
2115 // must be sorted and unique; we do a binary search in find_pc_desc() | |
2116 int prev_offset = pcs[0].pc_offset(); | |
2117 assert(prev_offset == PcDesc::lower_offset_limit, | |
2118 "must start with a sentinel"); | |
2119 for (int i = 1; i < count; i++) { | |
2120 int this_offset = pcs[i].pc_offset(); | |
2121 assert(this_offset > prev_offset, "offsets must be sorted"); | |
2122 prev_offset = this_offset; | |
2123 } | |
2124 assert(prev_offset == PcDesc::upper_offset_limit, | |
2125 "must end with a sentinel"); | |
2126 #endif //ASSERT | |
2127 | |
1135
e66fd840cb6b
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1109
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2128 // Search for MethodHandle invokes and tag the nmethod. |
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6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
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2129 for (int i = 0; i < count; i++) { |
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6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
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diff
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|
2130 if (pcs[i].is_method_handle_invoke()) { |
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6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
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|
2131 set_has_method_handle_invokes(true); |
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6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
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1109
diff
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|
2132 break; |
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6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
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1109
diff
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|
2133 } |
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|
2134 } |
2083
7d9caaedafce
6990933: assert(sender_cb) failed: sanity in frame::sender_for_interpreter_frame
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1972
diff
changeset
|
2135 assert(has_method_handle_invokes() == (_deoptimize_mh_offset != -1), "must have deopt mh handler"); |
1135
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2136 |
0 | 2137 int size = count * sizeof(PcDesc); |
2138 assert(scopes_pcs_size() >= size, "oob"); | |
2139 memcpy(scopes_pcs_begin(), pcs, size); | |
2140 | |
2141 // Adjust the final sentinel downward. | |
2142 PcDesc* last_pc = &scopes_pcs_begin()[count-1]; | |
2143 assert(last_pc->pc_offset() == PcDesc::upper_offset_limit, "sanity"); | |
1748 | 2144 last_pc->set_pc_offset(content_size() + 1); |
0 | 2145 for (; last_pc + 1 < scopes_pcs_end(); last_pc += 1) { |
2146 // Fill any rounding gaps with copies of the last record. | |
2147 last_pc[1] = last_pc[0]; | |
2148 } | |
2149 // The following assert could fail if sizeof(PcDesc) is not | |
2150 // an integral multiple of oopSize (the rounding term). | |
2151 // If it fails, change the logic to always allocate a multiple | |
2152 // of sizeof(PcDesc), and fill unused words with copies of *last_pc. | |
2153 assert(last_pc + 1 == scopes_pcs_end(), "must match exactly"); | |
2154 } | |
2155 | |
2156 void nmethod::copy_scopes_data(u_char* buffer, int size) { | |
2157 assert(scopes_data_size() >= size, "oob"); | |
2158 memcpy(scopes_data_begin(), buffer, size); | |
2159 } | |
2160 | |
2161 | |
2162 #ifdef ASSERT | |
2163 static PcDesc* linear_search(nmethod* nm, int pc_offset, bool approximate) { | |
2164 PcDesc* lower = nm->scopes_pcs_begin(); | |
2165 PcDesc* upper = nm->scopes_pcs_end(); | |
2166 lower += 1; // exclude initial sentinel | |
2167 PcDesc* res = NULL; | |
2168 for (PcDesc* p = lower; p < upper; p++) { | |
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2169 NOT_PRODUCT(--pc_nmethod_stats.pc_desc_tests); // don't count this call to match_desc |
0 | 2170 if (match_desc(p, pc_offset, approximate)) { |
2171 if (res == NULL) | |
2172 res = p; | |
2173 else | |
2174 res = (PcDesc*) badAddress; | |
2175 } | |
2176 } | |
2177 return res; | |
2178 } | |
2179 #endif | |
2180 | |
2181 | |
2182 // Finds a PcDesc with real-pc equal to "pc" | |
2183 PcDesc* nmethod::find_pc_desc_internal(address pc, bool approximate) { | |
1748 | 2184 address base_address = code_begin(); |
0 | 2185 if ((pc < base_address) || |
2186 (pc - base_address) >= (ptrdiff_t) PcDesc::upper_offset_limit) { | |
2187 return NULL; // PC is wildly out of range | |
2188 } | |
2189 int pc_offset = (int) (pc - base_address); | |
2190 | |
2191 // Check the PcDesc cache if it contains the desired PcDesc | |
2192 // (This as an almost 100% hit rate.) | |
2193 PcDesc* res = _pc_desc_cache.find_pc_desc(pc_offset, approximate); | |
2194 if (res != NULL) { | |
2195 assert(res == linear_search(this, pc_offset, approximate), "cache ok"); | |
2196 return res; | |
2197 } | |
2198 | |
2199 // Fallback algorithm: quasi-linear search for the PcDesc | |
2200 // Find the last pc_offset less than the given offset. | |
2201 // The successor must be the required match, if there is a match at all. | |
2202 // (Use a fixed radix to avoid expensive affine pointer arithmetic.) | |
2203 PcDesc* lower = scopes_pcs_begin(); | |
2204 PcDesc* upper = scopes_pcs_end(); | |
2205 upper -= 1; // exclude final sentinel | |
2206 if (lower >= upper) return NULL; // native method; no PcDescs at all | |
2207 | |
2208 #define assert_LU_OK \ | |
2209 /* invariant on lower..upper during the following search: */ \ | |
2210 assert(lower->pc_offset() < pc_offset, "sanity"); \ | |
2211 assert(upper->pc_offset() >= pc_offset, "sanity") | |
2212 assert_LU_OK; | |
2213 | |
2214 // Use the last successful return as a split point. | |
2215 PcDesc* mid = _pc_desc_cache.last_pc_desc(); | |
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2216 NOT_PRODUCT(++pc_nmethod_stats.pc_desc_searches); |
0 | 2217 if (mid->pc_offset() < pc_offset) { |
2218 lower = mid; | |
2219 } else { | |
2220 upper = mid; | |
2221 } | |
2222 | |
2223 // Take giant steps at first (4096, then 256, then 16, then 1) | |
2224 const int LOG2_RADIX = 4 /*smaller steps in debug mode:*/ debug_only(-1); | |
2225 const int RADIX = (1 << LOG2_RADIX); | |
2226 for (int step = (1 << (LOG2_RADIX*3)); step > 1; step >>= LOG2_RADIX) { | |
2227 while ((mid = lower + step) < upper) { | |
2228 assert_LU_OK; | |
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2229 NOT_PRODUCT(++pc_nmethod_stats.pc_desc_searches); |
0 | 2230 if (mid->pc_offset() < pc_offset) { |
2231 lower = mid; | |
2232 } else { | |
2233 upper = mid; | |
2234 break; | |
2235 } | |
2236 } | |
2237 assert_LU_OK; | |
2238 } | |
2239 | |
2240 // Sneak up on the value with a linear search of length ~16. | |
2241 while (true) { | |
2242 assert_LU_OK; | |
2243 mid = lower + 1; | |
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2244 NOT_PRODUCT(++pc_nmethod_stats.pc_desc_searches); |
0 | 2245 if (mid->pc_offset() < pc_offset) { |
2246 lower = mid; | |
2247 } else { | |
2248 upper = mid; | |
2249 break; | |
2250 } | |
2251 } | |
2252 #undef assert_LU_OK | |
2253 | |
2254 if (match_desc(upper, pc_offset, approximate)) { | |
2255 assert(upper == linear_search(this, pc_offset, approximate), "search ok"); | |
2256 _pc_desc_cache.add_pc_desc(upper); | |
2257 return upper; | |
2258 } else { | |
2259 assert(NULL == linear_search(this, pc_offset, approximate), "search ok"); | |
2260 return NULL; | |
2261 } | |
2262 } | |
2263 | |
2264 | |
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3aaa4b9966f6
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|
2265 void nmethod::check_all_dependencies(DepChange& changes) { |
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2266 // Checked dependencies are allocated into this ResourceMark |
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2267 ResourceMark rm; |
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2268 |
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2269 // Turn off dependency tracing while actually testing dependencies. |
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2270 NOT_PRODUCT( FlagSetting fs(TraceDependencies, false) ); |
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2271 |
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2272 typedef ResourceHashtable<DependencySignature, int, &DependencySignature::hash, |
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2273 &DependencySignature::equals, 11027> DepTable; |
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2274 |
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2275 DepTable* table = new DepTable(); |
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|
2276 |
14262
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2277 // Iterate over live nmethods and check dependencies of all nmethods that are not |
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2278 // marked for deoptimization. A particular dependency is only checked once. |
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2279 for(nmethod* nm = CodeCache::alive_nmethod(CodeCache::first()); nm != NULL; nm = CodeCache::alive_nmethod(CodeCache::next(nm))) { |
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2280 if (!nm->is_marked_for_deoptimization()) { |
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2281 for (Dependencies::DepStream deps(nm); deps.next(); ) { |
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2282 // Construct abstraction of a dependency. |
14505
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2283 DependencySignature* current_sig = new DependencySignature(deps); |
14660
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|
2284 |
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2285 // Determine if dependency is already checked. table->put(...) returns |
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2286 // 'true' if the dependency is added (i.e., was not in the hashtable). |
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2287 if (table->put(*current_sig, 1)) { |
14262
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2288 if (deps.check_dependency() != NULL) { |
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2289 // Dependency checking failed. Print out information about the failed |
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2290 // dependency and finally fail with an assert. We can fail here, since |
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2291 // dependency checking is never done in a product build. |
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2292 changes.print(); |
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2293 nm->print(); |
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2294 nm->print_dependencies(); |
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2295 assert(false, "Should have been marked for deoptimization"); |
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2296 } |
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2297 } |
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|
2298 } |
0 | 2299 } |
2300 } | |
2301 } | |
2302 | |
2303 bool nmethod::check_dependency_on(DepChange& changes) { | |
2304 // What has happened: | |
2305 // 1) a new class dependee has been added | |
2306 // 2) dependee and all its super classes have been marked | |
2307 bool found_check = false; // set true if we are upset | |
2308 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
2309 // Evaluate only relevant dependencies. | |
2310 if (deps.spot_check_dependency_at(changes) != NULL) { | |
2311 found_check = true; | |
2312 NOT_DEBUG(break); | |
2313 } | |
2314 } | |
2315 return found_check; | |
2316 } | |
2317 | |
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2318 bool nmethod::is_evol_dependent_on(Klass* dependee) { |
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2319 InstanceKlass *dependee_ik = InstanceKlass::cast(dependee); |
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2320 Array<Method*>* dependee_methods = dependee_ik->methods(); |
0 | 2321 for (Dependencies::DepStream deps(this); deps.next(); ) { |
2322 if (deps.type() == Dependencies::evol_method) { | |
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2323 Method* method = deps.method_argument(0); |
0 | 2324 for (int j = 0; j < dependee_methods->length(); j++) { |
6725
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2325 if (dependee_methods->at(j) == method) { |
0 | 2326 // RC_TRACE macro has an embedded ResourceMark |
2327 RC_TRACE(0x01000000, | |
2328 ("Found evol dependency of nmethod %s.%s(%s) compile_id=%d on method %s.%s(%s)", | |
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2329 _method->method_holder()->external_name(), |
0 | 2330 _method->name()->as_C_string(), |
2331 _method->signature()->as_C_string(), compile_id(), | |
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2332 method->method_holder()->external_name(), |
0 | 2333 method->name()->as_C_string(), |
2334 method->signature()->as_C_string())); | |
2335 if (TraceDependencies || LogCompilation) | |
2336 deps.log_dependency(dependee); | |
2337 return true; | |
2338 } | |
2339 } | |
2340 } | |
2341 } | |
2342 return false; | |
2343 } | |
2344 | |
2345 // Called from mark_for_deoptimization, when dependee is invalidated. | |
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2346 bool nmethod::is_dependent_on_method(Method* dependee) { |
0 | 2347 for (Dependencies::DepStream deps(this); deps.next(); ) { |
2348 if (deps.type() != Dependencies::evol_method) | |
2349 continue; | |
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2350 Method* method = deps.method_argument(0); |
0 | 2351 if (method == dependee) return true; |
2352 } | |
2353 return false; | |
2354 } | |
2355 | |
2356 | |
2357 bool nmethod::is_patchable_at(address instr_addr) { | |
1748 | 2358 assert(insts_contains(instr_addr), "wrong nmethod used"); |
0 | 2359 if (is_zombie()) { |
2360 // a zombie may never be patched | |
2361 return false; | |
2362 } | |
2363 return true; | |
2364 } | |
2365 | |
2366 | |
2367 address nmethod::continuation_for_implicit_exception(address pc) { | |
2368 // Exception happened outside inline-cache check code => we are inside | |
2369 // an active nmethod => use cpc to determine a return address | |
1748 | 2370 int exception_offset = pc - code_begin(); |
0 | 2371 int cont_offset = ImplicitExceptionTable(this).at( exception_offset ); |
2372 #ifdef ASSERT | |
2373 if (cont_offset == 0) { | |
2374 Thread* thread = ThreadLocalStorage::get_thread_slow(); | |
2375 ResetNoHandleMark rnm; // Might be called from LEAF/QUICK ENTRY | |
2376 HandleMark hm(thread); | |
2377 ResourceMark rm(thread); | |
2378 CodeBlob* cb = CodeCache::find_blob(pc); | |
2379 assert(cb != NULL && cb == this, ""); | |
2380 tty->print_cr("implicit exception happened at " INTPTR_FORMAT, pc); | |
2381 print(); | |
2382 method()->print_codes(); | |
2383 print_code(); | |
2384 print_pcs(); | |
2385 } | |
2386 #endif | |
1250 | 2387 if (cont_offset == 0) { |
2388 // Let the normal error handling report the exception | |
2389 return NULL; | |
2390 } | |
1748 | 2391 return code_begin() + cont_offset; |
0 | 2392 } |
2393 | |
2394 | |
2395 | |
2396 void nmethod_init() { | |
2397 // make sure you didn't forget to adjust the filler fields | |
2398 assert(sizeof(nmethod) % oopSize == 0, "nmethod size must be multiple of a word"); | |
2399 } | |
2400 | |
2401 | |
2402 //------------------------------------------------------------------------------------------- | |
2403 | |
2404 | |
2405 // QQQ might we make this work from a frame?? | |
2406 nmethodLocker::nmethodLocker(address pc) { | |
2407 CodeBlob* cb = CodeCache::find_blob(pc); | |
2408 guarantee(cb != NULL && cb->is_nmethod(), "bad pc for a nmethod found"); | |
2409 _nm = (nmethod*)cb; | |
2410 lock_nmethod(_nm); | |
2411 } | |
2412 | |
2342
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7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
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|
2413 // Only JvmtiDeferredEvent::compiled_method_unload_event() |
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diff
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|
2414 // should pass zombie_ok == true. |
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
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|
2415 void nmethodLocker::lock_nmethod(nmethod* nm, bool zombie_ok) { |
0 | 2416 if (nm == NULL) return; |
2417 Atomic::inc(&nm->_lock_count); | |
2342
46a56fac55c7
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|
2418 guarantee(zombie_ok || !nm->is_zombie(), "cannot lock a zombie method"); |
0 | 2419 } |
2420 | |
2421 void nmethodLocker::unlock_nmethod(nmethod* nm) { | |
2422 if (nm == NULL) return; | |
2423 Atomic::dec(&nm->_lock_count); | |
2424 guarantee(nm->_lock_count >= 0, "unmatched nmethod lock/unlock"); | |
2425 } | |
2426 | |
1204 | 2427 |
2428 // ----------------------------------------------------------------------------- | |
2429 // nmethod::get_deopt_original_pc | |
2430 // | |
2431 // Return the original PC for the given PC if: | |
2432 // (a) the given PC belongs to a nmethod and | |
2433 // (b) it is a deopt PC | |
2434 address nmethod::get_deopt_original_pc(const frame* fr) { | |
2435 if (fr->cb() == NULL) return NULL; | |
2436 | |
2437 nmethod* nm = fr->cb()->as_nmethod_or_null(); | |
2438 if (nm != NULL && nm->is_deopt_pc(fr->pc())) | |
2439 return nm->get_original_pc(fr); | |
2440 | |
2441 return NULL; | |
0 | 2442 } |
2443 | |
2444 | |
2445 // ----------------------------------------------------------------------------- | |
1135
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2446 // MethodHandle |
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|
2447 |
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2448 bool nmethod::is_method_handle_return(address return_pc) { |
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|
2449 if (!has_method_handle_invokes()) return false; |
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|
2450 PcDesc* pd = pc_desc_at(return_pc); |
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2451 if (pd == NULL) |
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|
2452 return false; |
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|
2453 return pd->is_method_handle_invoke(); |
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|
2454 } |
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|
2455 |
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|
2456 |
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|
2457 // ----------------------------------------------------------------------------- |
0 | 2458 // Verification |
2459 | |
989
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2460 class VerifyOopsClosure: public OopClosure { |
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2461 nmethod* _nm; |
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|
2462 bool _ok; |
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|
2463 public: |
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2464 VerifyOopsClosure(nmethod* nm) : _nm(nm), _ok(true) { } |
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2465 bool ok() { return _ok; } |
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|
2466 virtual void do_oop(oop* p) { |
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2467 if ((*p) == NULL || (*p)->is_oop()) return; |
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2468 if (_ok) { |
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2469 _nm->print_nmethod(true); |
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|
2470 _ok = false; |
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|
2471 } |
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|
2472 tty->print_cr("*** non-oop "PTR_FORMAT" found at "PTR_FORMAT" (offset %d)", |
12316
190899198332
7195622: CheckUnhandledOops has limited usefulness now
hseigel
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|
2473 (void *)(*p), (intptr_t)p, (int)((intptr_t)p - (intptr_t)_nm)); |
989
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|
2474 } |
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2475 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
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|
2476 }; |
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2477 |
0 | 2478 void nmethod::verify() { |
2479 | |
2480 // Hmm. OSR methods can be deopted but not marked as zombie or not_entrant | |
2481 // seems odd. | |
2482 | |
2483 if( is_zombie() || is_not_entrant() ) | |
2484 return; | |
2485 | |
2486 // Make sure all the entry points are correctly aligned for patching. | |
2487 NativeJump::check_verified_entry_alignment(entry_point(), verified_entry_point()); | |
2488 | |
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2489 // assert(method()->is_oop(), "must be valid"); |
0 | 2490 |
2491 ResourceMark rm; | |
2492 | |
2493 if (!CodeCache::contains(this)) { | |
1490
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|
2494 fatal(err_msg("nmethod at " INTPTR_FORMAT " not in zone", this)); |
0 | 2495 } |
2496 | |
2497 if(is_native_method() ) | |
2498 return; | |
2499 | |
2500 nmethod* nm = CodeCache::find_nmethod(verified_entry_point()); | |
2501 if (nm != this) { | |
1490
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|
2502 fatal(err_msg("findNMethod did not find this nmethod (" INTPTR_FORMAT ")", |
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|
2503 this)); |
0 | 2504 } |
2505 | |
2506 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
2507 if (! p->verify(this)) { | |
2508 tty->print_cr("\t\tin nmethod at " INTPTR_FORMAT " (pcs)", this); | |
2509 } | |
2510 } | |
2511 | |
989
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2512 VerifyOopsClosure voc(this); |
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|
2513 oops_do(&voc); |
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|
2514 assert(voc.ok(), "embedded oops must be OK"); |
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|
2515 verify_scavenge_root_oops(); |
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2516 |
0 | 2517 verify_scopes(); |
2518 } | |
2519 | |
2520 | |
2521 void nmethod::verify_interrupt_point(address call_site) { | |
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e2509677809c
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|
2522 // Verify IC only when nmethod installation is finished. |
13441 | 2523 bool is_installed = (method()->code() == this) // nmethod is in state 'in_use' and installed |
2524 || !this->is_in_use(); // nmethod is installed, but not in 'in_use' state | |
13071
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2525 if (is_installed) { |
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|
2526 Thread *cur = Thread::current(); |
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2527 if (CompiledIC_lock->owner() == cur || |
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2528 ((cur->is_VM_thread() || cur->is_ConcurrentGC_thread()) && |
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|
2529 SafepointSynchronize::is_at_safepoint())) { |
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|
2530 CompiledIC_at(this, call_site); |
e2509677809c
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|
2531 CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops()); |
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|
2532 } else { |
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|
2533 MutexLocker ml_verify (CompiledIC_lock); |
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2534 CompiledIC_at(this, call_site); |
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2535 } |
0 | 2536 } |
13071
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2537 |
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2538 PcDesc* pd = pc_desc_at(nativeCall_at(call_site)->return_address()); |
0 | 2539 assert(pd != NULL, "PcDesc must exist"); |
2540 for (ScopeDesc* sd = new ScopeDesc(this, pd->scope_decode_offset(), | |
9707 | 2541 pd->obj_decode_offset(), pd->should_reexecute(), pd->rethrow_exception(), |
1253
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|
2542 pd->return_oop()); |
0 | 2543 !sd->is_top(); sd = sd->sender()) { |
2544 sd->verify(); | |
2545 } | |
2546 } | |
2547 | |
2548 void nmethod::verify_scopes() { | |
2549 if( !method() ) return; // Runtime stubs have no scope | |
2550 if (method()->is_native()) return; // Ignore stub methods. | |
2551 // iterate through all interrupt point | |
2552 // and verify the debug information is valid. | |
2553 RelocIterator iter((nmethod*)this); | |
2554 while (iter.next()) { | |
2555 address stub = NULL; | |
2556 switch (iter.type()) { | |
2557 case relocInfo::virtual_call_type: | |
2558 verify_interrupt_point(iter.addr()); | |
2559 break; | |
2560 case relocInfo::opt_virtual_call_type: | |
2561 stub = iter.opt_virtual_call_reloc()->static_stub(); | |
2562 verify_interrupt_point(iter.addr()); | |
2563 break; | |
2564 case relocInfo::static_call_type: | |
2565 stub = iter.static_call_reloc()->static_stub(); | |
2566 //verify_interrupt_point(iter.addr()); | |
2567 break; | |
2568 case relocInfo::runtime_call_type: | |
2569 address destination = iter.reloc()->value(); | |
2570 // Right now there is no way to find out which entries support | |
2571 // an interrupt point. It would be nice if we had this | |
2572 // information in a table. | |
2573 break; | |
2574 } | |
2575 assert(stub == NULL || stub_contains(stub), "static call stub outside stub section"); | |
2576 } | |
2577 } | |
2578 | |
2579 | |
2580 // ----------------------------------------------------------------------------- | |
2581 // Non-product code | |
2582 #ifndef PRODUCT | |
2583 | |
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2584 class DebugScavengeRoot: public OopClosure { |
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2585 nmethod* _nm; |
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|
2586 bool _ok; |
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2587 public: |
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2588 DebugScavengeRoot(nmethod* nm) : _nm(nm), _ok(true) { } |
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2589 bool ok() { return _ok; } |
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|
2590 virtual void do_oop(oop* p) { |
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|
2591 if ((*p) == NULL || !(*p)->is_scavengable()) return; |
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|
2592 if (_ok) { |
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|
2593 _nm->print_nmethod(true); |
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|
2594 _ok = false; |
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|
2595 } |
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|
2596 tty->print_cr("*** scavengable oop "PTR_FORMAT" found at "PTR_FORMAT" (offset %d)", |
12316
190899198332
7195622: CheckUnhandledOops has limited usefulness now
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|
2597 (void *)(*p), (intptr_t)p, (int)((intptr_t)p - (intptr_t)_nm)); |
989
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diff
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|
2598 (*p)->print(); |
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|
2599 } |
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|
2600 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
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|
2601 }; |
0 | 2602 |
989
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|
2603 void nmethod::verify_scavenge_root_oops() { |
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|
2604 if (!on_scavenge_root_list()) { |
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|
2605 // Actually look inside, to verify the claim that it's clean. |
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2606 DebugScavengeRoot debug_scavenge_root(this); |
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2607 oops_do(&debug_scavenge_root); |
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|
2608 if (!debug_scavenge_root.ok()) |
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2609 fatal("found an unadvertised bad scavengable oop in the code cache"); |
0 | 2610 } |
989
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2611 assert(scavenge_root_not_marked(), ""); |
0 | 2612 } |
2613 | |
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2614 #endif // PRODUCT |
0 | 2615 |
2616 // Printing operations | |
2617 | |
2618 void nmethod::print() const { | |
2619 ResourceMark rm; | |
2620 ttyLocker ttyl; // keep the following output all in one block | |
2621 | |
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
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diff
changeset
|
2622 tty->print("Compiled method "); |
0 | 2623 |
2624 if (is_compiled_by_c1()) { | |
2625 tty->print("(c1) "); | |
2626 } else if (is_compiled_by_c2()) { | |
2627 tty->print("(c2) "); | |
1692 | 2628 } else if (is_compiled_by_shark()) { |
2629 tty->print("(shark) "); | |
9707 | 2630 } else if (is_compiled_by_graal()) { |
2631 tty->print("(Graal) "); | |
0 | 2632 } else { |
2633 tty->print("(nm) "); | |
2634 } | |
2635 | |
2405
3d58a4983660
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diff
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|
2636 print_on(tty, NULL); |
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|
2637 |
0 | 2638 if (WizardMode) { |
2639 tty->print("((nmethod*) "INTPTR_FORMAT ") ", this); | |
2640 tty->print(" for method " INTPTR_FORMAT , (address)method()); | |
2641 tty->print(" { "); | |
2642 if (is_in_use()) tty->print("in_use "); | |
2643 if (is_not_entrant()) tty->print("not_entrant "); | |
2644 if (is_zombie()) tty->print("zombie "); | |
2645 if (is_unloaded()) tty->print("unloaded "); | |
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|
2646 if (on_scavenge_root_list()) tty->print("scavenge_root "); |
0 | 2647 tty->print_cr("}:"); |
2648 } | |
2649 if (size () > 0) tty->print_cr(" total in heap [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2650 (address)this, | |
2651 (address)this + size(), | |
2652 size()); | |
2653 if (relocation_size () > 0) tty->print_cr(" relocation [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2654 relocation_begin(), | |
2655 relocation_end(), | |
2656 relocation_size()); | |
1762
0878d7bae69f
6961697: move nmethod constants section before instruction section
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1748
diff
changeset
|
2657 if (consts_size () > 0) tty->print_cr(" constants [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
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1748
diff
changeset
|
2658 consts_begin(), |
0878d7bae69f
6961697: move nmethod constants section before instruction section
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1748
diff
changeset
|
2659 consts_end(), |
0878d7bae69f
6961697: move nmethod constants section before instruction section
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diff
changeset
|
2660 consts_size()); |
1748 | 2661 if (insts_size () > 0) tty->print_cr(" main code [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
2662 insts_begin(), | |
2663 insts_end(), | |
2664 insts_size()); | |
0 | 2665 if (stub_size () > 0) tty->print_cr(" stub code [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
2666 stub_begin(), | |
2667 stub_end(), | |
2668 stub_size()); | |
1563
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
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1538
diff
changeset
|
2669 if (oops_size () > 0) tty->print_cr(" oops [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
1a5913bf5e19
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1538
diff
changeset
|
2670 oops_begin(), |
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
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1538
diff
changeset
|
2671 oops_end(), |
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|
2672 oops_size()); |
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|
2673 if (metadata_size () > 0) tty->print_cr(" metadata [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
da91efe96a93
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|
2674 metadata_begin(), |
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|
2675 metadata_end(), |
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|
2676 metadata_size()); |
0 | 2677 if (scopes_data_size () > 0) tty->print_cr(" scopes data [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
2678 scopes_data_begin(), | |
2679 scopes_data_end(), | |
2680 scopes_data_size()); | |
2681 if (scopes_pcs_size () > 0) tty->print_cr(" scopes pcs [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2682 scopes_pcs_begin(), | |
2683 scopes_pcs_end(), | |
2684 scopes_pcs_size()); | |
2685 if (dependencies_size () > 0) tty->print_cr(" dependencies [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2686 dependencies_begin(), | |
2687 dependencies_end(), | |
2688 dependencies_size()); | |
2689 if (handler_table_size() > 0) tty->print_cr(" handler table [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2690 handler_table_begin(), | |
2691 handler_table_end(), | |
2692 handler_table_size()); | |
2693 if (nul_chk_table_size() > 0) tty->print_cr(" nul chk table [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2694 nul_chk_table_begin(), | |
2695 nul_chk_table_end(), | |
2696 nul_chk_table_size()); | |
2697 } | |
2698 | |
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|
2699 void nmethod::print_code() { |
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|
2700 HandleMark hm; |
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|
2701 ResourceMark m; |
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diff
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|
2702 Disassembler::decode(this); |
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diff
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|
2703 } |
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|
2704 |
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2705 |
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|
2706 #ifndef PRODUCT |
0 | 2707 |
2708 void nmethod::print_scopes() { | |
2709 // Find the first pc desc for all scopes in the code and print it. | |
2710 ResourceMark rm; | |
2711 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
2712 if (p->scope_decode_offset() == DebugInformationRecorder::serialized_null) | |
2713 continue; | |
2714 | |
2715 ScopeDesc* sd = scope_desc_at(p->real_pc(this)); | |
2716 sd->print_on(tty, p); | |
2717 } | |
2718 } | |
2719 | |
2720 void nmethod::print_dependencies() { | |
2721 ResourceMark rm; | |
2722 ttyLocker ttyl; // keep the following output all in one block | |
2723 tty->print_cr("Dependencies:"); | |
2724 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
2725 deps.print_dependency(); | |
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2726 Klass* ctxk = deps.context_type(); |
0 | 2727 if (ctxk != NULL) { |
6983 | 2728 if (ctxk->oop_is_instance() && ((InstanceKlass*)ctxk)->is_dependent_nmethod(this)) { |
2729 tty->print_cr(" [nmethod<=klass]%s", ctxk->external_name()); | |
0 | 2730 } |
2731 } | |
2732 deps.log_dependency(); // put it into the xml log also | |
2733 } | |
2734 } | |
2735 | |
2736 | |
2737 void nmethod::print_relocations() { | |
2738 ResourceMark m; // in case methods get printed via the debugger | |
2739 tty->print_cr("relocations:"); | |
2740 RelocIterator iter(this); | |
2741 iter.print(); | |
2742 if (UseRelocIndex) { | |
2743 jint* index_end = (jint*)relocation_end() - 1; | |
2744 jint index_size = *index_end; | |
2745 jint* index_start = (jint*)( (address)index_end - index_size ); | |
2746 tty->print_cr(" index @" INTPTR_FORMAT ": index_size=%d", index_start, index_size); | |
2747 if (index_size > 0) { | |
2748 jint* ip; | |
2749 for (ip = index_start; ip+2 <= index_end; ip += 2) | |
2750 tty->print_cr(" (%d %d) addr=" INTPTR_FORMAT " @" INTPTR_FORMAT, | |
2751 ip[0], | |
2752 ip[1], | |
2753 header_end()+ip[0], | |
2754 relocation_begin()-1+ip[1]); | |
2755 for (; ip < index_end; ip++) | |
2756 tty->print_cr(" (%d ?)", ip[0]); | |
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ef57c43512d6
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|
2757 tty->print_cr(" @" INTPTR_FORMAT ": index_size=%d", ip, *ip); |
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|
2758 ip++; |
0 | 2759 tty->print_cr("reloc_end @" INTPTR_FORMAT ":", ip); |
2760 } | |
2761 } | |
2762 } | |
2763 | |
2764 | |
2765 void nmethod::print_pcs() { | |
2766 ResourceMark m; // in case methods get printed via debugger | |
2767 tty->print_cr("pc-bytecode offsets:"); | |
2768 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
2769 p->print(this); | |
2770 } | |
2771 } | |
2772 | |
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2773 #endif // PRODUCT |
0 | 2774 |
2775 const char* nmethod::reloc_string_for(u_char* begin, u_char* end) { | |
2776 RelocIterator iter(this, begin, end); | |
2777 bool have_one = false; | |
2778 while (iter.next()) { | |
2779 have_one = true; | |
2780 switch (iter.type()) { | |
2781 case relocInfo::none: return "no_reloc"; | |
2782 case relocInfo::oop_type: { | |
2783 stringStream st; | |
2784 oop_Relocation* r = iter.oop_reloc(); | |
2785 oop obj = r->oop_value(); | |
2786 st.print("oop("); | |
2787 if (obj == NULL) st.print("NULL"); | |
2788 else obj->print_value_on(&st); | |
2789 st.print(")"); | |
2790 return st.as_string(); | |
2791 } | |
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2792 case relocInfo::metadata_type: { |
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|
2793 stringStream st; |
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2794 metadata_Relocation* r = iter.metadata_reloc(); |
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changeset
|
2795 Metadata* obj = r->metadata_value(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2796 st.print("metadata("); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2797 if (obj == NULL) st.print("NULL"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2798 else obj->print_value_on(&st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2799 st.print(")"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2800 return st.as_string(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2801 } |
0 | 2802 case relocInfo::virtual_call_type: return "virtual_call"; |
2803 case relocInfo::opt_virtual_call_type: return "optimized virtual_call"; | |
2804 case relocInfo::static_call_type: return "static_call"; | |
2805 case relocInfo::static_stub_type: return "static_stub"; | |
2806 case relocInfo::runtime_call_type: return "runtime_call"; | |
2807 case relocInfo::external_word_type: return "external_word"; | |
2808 case relocInfo::internal_word_type: return "internal_word"; | |
2809 case relocInfo::section_word_type: return "section_word"; | |
2810 case relocInfo::poll_type: return "poll"; | |
2811 case relocInfo::poll_return_type: return "poll_return"; | |
2812 case relocInfo::type_mask: return "type_bit_mask"; | |
2813 } | |
2814 } | |
2815 return have_one ? "other" : NULL; | |
2816 } | |
2817 | |
2818 // Return a the last scope in (begin..end] | |
2819 ScopeDesc* nmethod::scope_desc_in(address begin, address end) { | |
2820 PcDesc* p = pc_desc_near(begin+1); | |
2821 if (p != NULL && p->real_pc(this) <= end) { | |
2822 return new ScopeDesc(this, p->scope_decode_offset(), | |
9707 | 2823 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
|
2824 p->return_oop()); |
0 | 2825 } |
2826 return NULL; | |
2827 } | |
2828 | |
6796
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
parents:
6792
diff
changeset
|
2829 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
|
2830 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
|
2831 if (block_begin == verified_entry_point()) stream->print_cr("[Verified Entry Point]"); |
9707 | 2832 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
|
2833 if (block_begin == stub_begin()) stream->print_cr("[Stub Code]"); |
9707 | 2834 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
|
2835 |
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
twisti
parents:
1644
diff
changeset
|
2836 if (has_method_handle_invokes()) |
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
twisti
parents:
1644
diff
changeset
|
2837 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
|
2838 |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2839 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
|
2840 |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2841 if (block_begin == entry_point()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2842 methodHandle m = method(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2843 if (m.not_null()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2844 stream->print(" # "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2845 m->print_value_on(stream); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2846 stream->cr(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2847 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2848 if (m.not_null() && !is_osr_method()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2849 ResourceMark rm; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2850 int sizeargs = m->size_of_parameters(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2851 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
|
2852 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, sizeargs); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2853 { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2854 int sig_index = 0; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2855 if (!m->is_static()) |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2856 sig_bt[sig_index++] = T_OBJECT; // 'this' |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2857 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
|
2858 BasicType t = ss.type(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2859 sig_bt[sig_index++] = t; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2860 if (type2size[t] == 2) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2861 sig_bt[sig_index++] = T_VOID; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2862 } else { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2863 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
|
2864 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2865 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2866 assert(sig_index == sizeargs, ""); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2867 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2868 const char* spname = "sp"; // make arch-specific? |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2869 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
|
2870 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
|
2871 int tab1 = 14, tab2 = 24; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2872 int sig_index = 0; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2873 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
|
2874 bool did_old_sp = false; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2875 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
|
2876 bool at_this = (arg_index == -1); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2877 bool at_old_sp = false; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2878 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
|
2879 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
|
2880 if (at_this) |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2881 stream->print(" # this: "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2882 else |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2883 stream->print(" # parm%d: ", arg_index); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2884 stream->move_to(tab1); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2885 VMReg fst = regs[sig_index].first(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2886 VMReg snd = regs[sig_index].second(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2887 if (fst->is_reg()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2888 stream->print("%s", fst->name()); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2889 if (snd->is_valid()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2890 stream->print(":%s", snd->name()); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2891 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2892 } else if (fst->is_stack()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2893 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
|
2894 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
|
2895 stream->print("[%s+0x%x]", spname, offset); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2896 } else { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2897 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
|
2898 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2899 stream->print(" "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2900 stream->move_to(tab2); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2901 stream->print("= "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2902 if (at_this) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2903 m->method_holder()->print_value_on(stream); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2904 } else { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2905 bool did_name = false; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2906 if (!at_this && ss.is_object()) { |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2142
diff
changeset
|
2907 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
|
2908 if (name != NULL) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2909 name->print_value_on(stream); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2910 did_name = true; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2911 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2912 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2913 if (!did_name) |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2914 stream->print("%s", type2name(t)); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2915 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2916 if (at_old_sp) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2917 stream->print(" (%s of caller)", spname); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2918 did_old_sp = true; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2919 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2920 stream->cr(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2921 sig_index += type2size[t]; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2922 arg_index += 1; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2923 if (!at_this) ss.next(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2924 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2925 if (!did_old_sp) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2926 stream->print(" # "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2927 stream->move_to(tab1); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2928 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
|
2929 stream->print(" (%s of caller)", spname); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2930 stream->cr(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2931 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2932 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2933 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2934 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2935 |
0 | 2936 void nmethod::print_code_comment_on(outputStream* st, int column, u_char* begin, u_char* end) { |
2937 // First, find an oopmap in (begin, end]. | |
2938 // We use the odd half-closed interval so that oop maps and scope descs | |
2939 // which are tied to the byte after a call are printed with the call itself. | |
1748 | 2940 address base = code_begin(); |
0 | 2941 OopMapSet* oms = oop_maps(); |
2942 if (oms != NULL) { | |
2943 for (int i = 0, imax = oms->size(); i < imax; i++) { | |
2944 OopMap* om = oms->at(i); | |
2945 address pc = base + om->offset(); | |
2946 if (pc > begin) { | |
2947 if (pc <= end) { | |
100
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2948 st->move_to(column); |
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2949 st->print("; "); |
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2950 om->print_on(st); |
0 | 2951 } |
2952 break; | |
2953 } | |
2954 } | |
2955 } | |
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2956 |
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2957 // Print any debug info present at this pc. |
0 | 2958 ScopeDesc* sd = scope_desc_in(begin, end); |
2959 if (sd != NULL) { | |
100
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2960 st->move_to(column); |
0 | 2961 if (sd->bci() == SynchronizationEntryBCI) { |
2962 st->print(";*synchronization entry"); | |
2963 } else { | |
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2964 if (sd->method() == NULL) { |
100
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2965 st->print("method is NULL"); |
0 | 2966 } else if (sd->method()->is_native()) { |
100
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2967 st->print("method is native"); |
0 | 2968 } else { |
2142 | 2969 Bytecodes::Code bc = sd->method()->java_code_at(sd->bci()); |
0 | 2970 st->print(";*%s", Bytecodes::name(bc)); |
2971 switch (bc) { | |
2972 case Bytecodes::_invokevirtual: | |
2973 case Bytecodes::_invokespecial: | |
2974 case Bytecodes::_invokestatic: | |
2975 case Bytecodes::_invokeinterface: | |
2976 { | |
2142 | 2977 Bytecode_invoke invoke(sd->method(), sd->bci()); |
0 | 2978 st->print(" "); |
2142 | 2979 if (invoke.name() != NULL) |
2980 invoke.name()->print_symbol_on(st); | |
0 | 2981 else |
2982 st->print("<UNKNOWN>"); | |
2983 break; | |
2984 } | |
2985 case Bytecodes::_getfield: | |
2986 case Bytecodes::_putfield: | |
2987 case Bytecodes::_getstatic: | |
2988 case Bytecodes::_putstatic: | |
2989 { | |
2142 | 2990 Bytecode_field field(sd->method(), sd->bci()); |
0 | 2991 st->print(" "); |
2142 | 2992 if (field.name() != NULL) |
2993 field.name()->print_symbol_on(st); | |
0 | 2994 else |
2995 st->print("<UNKNOWN>"); | |
2996 } | |
2997 } | |
2998 } | |
2999 } | |
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3000 |
0 | 3001 // Print all scopes |
3002 for (;sd != NULL; sd = sd->sender()) { | |
100
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3003 st->move_to(column); |
0 | 3004 st->print("; -"); |
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3005 if (sd->method() == NULL) { |
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3006 st->print("method is NULL"); |
0 | 3007 } else { |
3008 sd->method()->print_short_name(st); | |
3009 } | |
3010 int lineno = sd->method()->line_number_from_bci(sd->bci()); | |
3011 if (lineno != -1) { | |
3012 st->print("@%d (line %d)", sd->bci(), lineno); | |
3013 } else { | |
3014 st->print("@%d", sd->bci()); | |
3015 } | |
3016 st->cr(); | |
3017 } | |
3018 } | |
3019 | |
3020 // Print relocation information | |
3021 const char* str = reloc_string_for(begin, end); | |
3022 if (str != NULL) { | |
3023 if (sd != NULL) st->cr(); | |
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3024 st->move_to(column); |
0 | 3025 st->print("; {%s}", str); |
3026 } | |
1748 | 3027 int cont_offset = ImplicitExceptionTable(this).at(begin - code_begin()); |
0 | 3028 if (cont_offset != 0) { |
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3029 st->move_to(column); |
1748 | 3030 st->print("; implicit exception: dispatches to " INTPTR_FORMAT, code_begin() + cont_offset); |
0 | 3031 } |
3032 | |
3033 } | |
3034 | |
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3035 #ifndef PRODUCT |
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3036 |
0 | 3037 void nmethod::print_value_on(outputStream* st) const { |
2405
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3038 st->print("nmethod"); |
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3039 print_on(st, NULL); |
0 | 3040 } |
3041 | |
3042 void nmethod::print_calls(outputStream* st) { | |
3043 RelocIterator iter(this); | |
3044 while (iter.next()) { | |
3045 switch (iter.type()) { | |
3046 case relocInfo::virtual_call_type: | |
3047 case relocInfo::opt_virtual_call_type: { | |
3048 VerifyMutexLocker mc(CompiledIC_lock); | |
3049 CompiledIC_at(iter.reloc())->print(); | |
3050 break; | |
3051 } | |
3052 case relocInfo::static_call_type: | |
3053 st->print_cr("Static call at " INTPTR_FORMAT, iter.reloc()->addr()); | |
3054 compiledStaticCall_at(iter.reloc())->print(); | |
3055 break; | |
3056 } | |
3057 } | |
3058 } | |
3059 | |
3060 void nmethod::print_handler_table() { | |
3061 ExceptionHandlerTable(this).print(); | |
3062 } | |
3063 | |
3064 void nmethod::print_nul_chk_table() { | |
1748 | 3065 ImplicitExceptionTable(this).print(code_begin()); |
0 | 3066 } |
3067 | |
3068 void nmethod::print_statistics() { | |
3069 ttyLocker ttyl; | |
3070 if (xtty != NULL) xtty->head("statistics type='nmethod'"); | |
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3071 native_nmethod_stats.print_native_nmethod_stats(); |
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3072 #ifdef COMPILER1 |
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3073 c1_java_nmethod_stats.print_nmethod_stats("C1"); |
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|
3074 #endif |
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3075 #ifdef COMPILER2 |
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3076 c2_java_nmethod_stats.print_nmethod_stats("C2"); |
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3077 #endif |
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3078 #ifdef GRAAL |
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3079 graal_java_nmethod_stats.print_nmethod_stats("Graal"); |
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|
3080 #endif |
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ca33948fb804
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12704
diff
changeset
|
3081 unknown_java_nmethod_stats.print_nmethod_stats("Unknown"); |
0 | 3082 DebugInformationRecorder::print_statistics(); |
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|
3083 pc_nmethod_stats.print_pc_stats(); |
0 | 3084 Dependencies::print_statistics(); |
3085 if (xtty != NULL) xtty->tail("statistics"); | |
3086 } | |
3087 #endif // PRODUCT |