Mercurial > hg > truffle
annotate src/share/vm/code/nmethod.cpp @ 15715:bf6db624bf62
[inlining] no need for the suspense about return value
author | Miguel Garcia <miguel.m.garcia@oracle.com> |
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date | Fri, 16 May 2014 15:46:47 +0200 |
parents | e20a45d17181 |
children | ded2f1abfcda |
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" | |
42 #include "utilities/dtrace.hpp" | |
43 #include "utilities/events.hpp" | |
44 #include "utilities/xmlstream.hpp" | |
45 #ifdef SHARK | |
46 #include "shark/sharkCompiler.hpp" | |
47 #endif | |
9707 | 48 #ifdef GRAAL |
49 #include "graal/graalJavaAccess.hpp" | |
50 #endif | |
0 | 51 |
52 #ifdef DTRACE_ENABLED | |
53 | |
54 // Only bother with this argument setup if dtrace is available | |
55 | |
14909 | 56 #ifndef USDT2 |
57 HS_DTRACE_PROBE_DECL8(hotspot, compiled__method__load, | |
58 const char*, int, const char*, int, const char*, int, void*, size_t); | |
59 | |
60 HS_DTRACE_PROBE_DECL6(hotspot, compiled__method__unload, | |
61 char*, int, char*, int, char*, int); | |
62 | |
63 #define DTRACE_METHOD_UNLOAD_PROBE(method) \ | |
64 { \ | |
65 Method* m = (method); \ | |
66 if (m != NULL) { \ | |
67 Symbol* klass_name = m->klass_name(); \ | |
68 Symbol* name = m->name(); \ | |
69 Symbol* signature = m->signature(); \ | |
70 HS_DTRACE_PROBE6(hotspot, compiled__method__unload, \ | |
71 klass_name->bytes(), klass_name->utf8_length(), \ | |
72 name->bytes(), name->utf8_length(), \ | |
73 signature->bytes(), signature->utf8_length()); \ | |
74 } \ | |
75 } | |
76 #else /* USDT2 */ | |
4006 | 77 #define DTRACE_METHOD_UNLOAD_PROBE(method) \ |
78 { \ | |
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79 Method* m = (method); \ |
4006 | 80 if (m != NULL) { \ |
81 Symbol* klass_name = m->klass_name(); \ | |
82 Symbol* name = m->name(); \ | |
83 Symbol* signature = m->signature(); \ | |
84 HOTSPOT_COMPILED_METHOD_UNLOAD( \ | |
85 (char *) klass_name->bytes(), klass_name->utf8_length(), \ | |
86 (char *) name->bytes(), name->utf8_length(), \ | |
87 (char *) signature->bytes(), signature->utf8_length()); \ | |
88 } \ | |
89 } | |
14909 | 90 #endif /* USDT2 */ |
0 | 91 |
92 #else // ndef DTRACE_ENABLED | |
93 | |
94 #define DTRACE_METHOD_UNLOAD_PROBE(method) | |
95 | |
96 #endif | |
97 | |
98 bool nmethod::is_compiled_by_c1() const { | |
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99 if (compiler() == NULL) { |
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100 return false; |
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101 } |
0 | 102 return compiler()->is_c1(); |
103 } | |
9707 | 104 bool nmethod::is_compiled_by_graal() const { |
105 if (compiler() == NULL || method() == NULL) return false; // can happen during debug printing | |
106 if (is_native_method()) return false; | |
107 return compiler()->is_graal(); | |
108 } | |
0 | 109 bool nmethod::is_compiled_by_c2() const { |
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110 if (compiler() == NULL) { |
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111 return false; |
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112 } |
0 | 113 return compiler()->is_c2(); |
114 } | |
1692 | 115 bool nmethod::is_compiled_by_shark() const { |
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116 if (compiler() == NULL) { |
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117 return false; |
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118 } |
1692 | 119 return compiler()->is_shark(); |
120 } | |
0 | 121 |
122 | |
123 | |
124 //--------------------------------------------------------------------------------- | |
125 // NMethod statistics | |
126 // They are printed under various flags, including: | |
127 // PrintC1Statistics, PrintOptoStatistics, LogVMOutput, and LogCompilation. | |
128 // (In the latter two cases, they like other stats are printed to the log only.) | |
129 | |
130 // These variables are put into one block to reduce relocations | |
131 // and make it simpler to print from the debugger. | |
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132 struct java_nmethod_stats_struct { |
0 | 133 int nmethod_count; |
134 int total_size; | |
135 int relocation_size; | |
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136 int consts_size; |
1748 | 137 int insts_size; |
0 | 138 int stub_size; |
139 int scopes_data_size; | |
140 int scopes_pcs_size; | |
141 int dependencies_size; | |
142 int handler_table_size; | |
143 int nul_chk_table_size; | |
144 int oops_size; | |
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145 int metadata_size; |
0 | 146 |
147 void note_nmethod(nmethod* nm) { | |
148 nmethod_count += 1; | |
149 total_size += nm->size(); | |
150 relocation_size += nm->relocation_size(); | |
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151 consts_size += nm->consts_size(); |
1748 | 152 insts_size += nm->insts_size(); |
0 | 153 stub_size += nm->stub_size(); |
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154 oops_size += nm->oops_size(); |
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155 metadata_size += nm->metadata_size(); |
0 | 156 scopes_data_size += nm->scopes_data_size(); |
157 scopes_pcs_size += nm->scopes_pcs_size(); | |
158 dependencies_size += nm->dependencies_size(); | |
159 handler_table_size += nm->handler_table_size(); | |
160 nul_chk_table_size += nm->nul_chk_table_size(); | |
161 } | |
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162 void print_nmethod_stats(const char* name) { |
0 | 163 if (nmethod_count == 0) return; |
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164 tty->print_cr("Statistics for %d bytecoded nmethods for %s:", nmethod_count, name); |
0 | 165 if (total_size != 0) tty->print_cr(" total in heap = %d", total_size); |
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166 if (nmethod_count != 0) tty->print_cr(" header = %d", nmethod_count * sizeof(nmethod)); |
0 | 167 if (relocation_size != 0) tty->print_cr(" relocation = %d", relocation_size); |
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168 if (consts_size != 0) tty->print_cr(" constants = %d", consts_size); |
1748 | 169 if (insts_size != 0) tty->print_cr(" main code = %d", insts_size); |
0 | 170 if (stub_size != 0) tty->print_cr(" stub code = %d", stub_size); |
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171 if (oops_size != 0) tty->print_cr(" oops = %d", oops_size); |
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172 if (metadata_size != 0) tty->print_cr(" metadata = %d", metadata_size); |
0 | 173 if (scopes_data_size != 0) tty->print_cr(" scopes data = %d", scopes_data_size); |
174 if (scopes_pcs_size != 0) tty->print_cr(" scopes pcs = %d", scopes_pcs_size); | |
175 if (dependencies_size != 0) tty->print_cr(" dependencies = %d", dependencies_size); | |
176 if (handler_table_size != 0) tty->print_cr(" handler table = %d", handler_table_size); | |
177 if (nul_chk_table_size != 0) tty->print_cr(" nul chk table = %d", nul_chk_table_size); | |
178 } | |
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179 }; |
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180 |
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181 struct native_nmethod_stats_struct { |
0 | 182 int native_nmethod_count; |
183 int native_total_size; | |
184 int native_relocation_size; | |
1748 | 185 int native_insts_size; |
0 | 186 int native_oops_size; |
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187 int native_metadata_size; |
0 | 188 void note_native_nmethod(nmethod* nm) { |
189 native_nmethod_count += 1; | |
190 native_total_size += nm->size(); | |
191 native_relocation_size += nm->relocation_size(); | |
1748 | 192 native_insts_size += nm->insts_size(); |
0 | 193 native_oops_size += nm->oops_size(); |
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194 native_metadata_size += nm->metadata_size(); |
0 | 195 } |
196 void print_native_nmethod_stats() { | |
197 if (native_nmethod_count == 0) return; | |
198 tty->print_cr("Statistics for %d native nmethods:", native_nmethod_count); | |
199 if (native_total_size != 0) tty->print_cr(" N. total size = %d", native_total_size); | |
200 if (native_relocation_size != 0) tty->print_cr(" N. relocation = %d", native_relocation_size); | |
1748 | 201 if (native_insts_size != 0) tty->print_cr(" N. main code = %d", native_insts_size); |
0 | 202 if (native_oops_size != 0) tty->print_cr(" N. oops = %d", native_oops_size); |
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203 if (native_metadata_size != 0) tty->print_cr(" N. metadata = %d", native_metadata_size); |
0 | 204 } |
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205 }; |
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206 |
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207 struct pc_nmethod_stats_struct { |
0 | 208 int pc_desc_resets; // number of resets (= number of caches) |
209 int pc_desc_queries; // queries to nmethod::find_pc_desc | |
210 int pc_desc_approx; // number of those which have approximate true | |
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211 int pc_desc_repeats; // number of _pc_descs[0] hits |
0 | 212 int pc_desc_hits; // number of LRU cache hits |
213 int pc_desc_tests; // total number of PcDesc examinations | |
214 int pc_desc_searches; // total number of quasi-binary search steps | |
215 int pc_desc_adds; // number of LUR cache insertions | |
216 | |
217 void print_pc_stats() { | |
218 tty->print_cr("PcDesc Statistics: %d queries, %.2f comparisons per query", | |
219 pc_desc_queries, | |
220 (double)(pc_desc_tests + pc_desc_searches) | |
221 / pc_desc_queries); | |
222 tty->print_cr(" caches=%d queries=%d/%d, hits=%d+%d, tests=%d+%d, adds=%d", | |
223 pc_desc_resets, | |
224 pc_desc_queries, pc_desc_approx, | |
225 pc_desc_repeats, pc_desc_hits, | |
226 pc_desc_tests, pc_desc_searches, pc_desc_adds); | |
227 } | |
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228 }; |
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229 |
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230 #ifdef COMPILER1 |
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231 static java_nmethod_stats_struct c1_java_nmethod_stats; |
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232 #endif |
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233 #ifdef COMPILER2 |
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234 static java_nmethod_stats_struct c2_java_nmethod_stats; |
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235 #endif |
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236 #ifdef GRAAL |
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237 static java_nmethod_stats_struct graal_java_nmethod_stats; |
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238 #endif |
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239 #ifdef SHARK |
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240 static java_nmethod_stats_struct shark_java_nmethod_stats; |
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241 #endif |
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242 static java_nmethod_stats_struct unknown_java_nmethod_stats; |
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243 |
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244 static native_nmethod_stats_struct native_nmethod_stats; |
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245 static pc_nmethod_stats_struct pc_nmethod_stats; |
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246 |
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247 static void note_native_wrapper_nmethod(nmethod* nm) { |
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248 native_nmethod_stats.note_native_nmethod(nm); |
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249 } |
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250 |
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251 static void note_java_nmethod(nmethod* nm) { |
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252 #ifdef COMPILER1 |
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253 if (nm->is_compiled_by_c1()) { |
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254 c1_java_nmethod_stats.note_nmethod(nm); |
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255 } else |
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256 #endif |
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257 #ifdef COMPILER2 |
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258 if (nm->is_compiled_by_c2()) { |
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259 c2_java_nmethod_stats.note_nmethod(nm); |
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260 } else |
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261 #endif |
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262 #ifdef GRAAL |
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263 if (nm->is_compiled_by_graal()) { |
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264 graal_java_nmethod_stats.note_nmethod(nm); |
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265 } else |
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266 #endif |
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267 #ifdef SHARK |
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268 if (nm->is_compiled_by_shark()) { |
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269 shark_java_nmethod_stats.note_nmethod(nm); |
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270 } else |
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271 #endif |
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272 { |
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273 unknown_java_nmethod_stats.note_nmethod(nm); |
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274 } |
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275 } |
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276 |
0 | 277 //--------------------------------------------------------------------------------- |
278 | |
279 | |
280 ExceptionCache::ExceptionCache(Handle exception, address pc, address handler) { | |
281 assert(pc != NULL, "Must be non null"); | |
282 assert(exception.not_null(), "Must be non null"); | |
283 assert(handler != NULL, "Must be non null"); | |
284 | |
285 _count = 0; | |
286 _exception_type = exception->klass(); | |
287 _next = NULL; | |
288 | |
289 add_address_and_handler(pc,handler); | |
290 } | |
291 | |
292 | |
293 address ExceptionCache::match(Handle exception, address pc) { | |
294 assert(pc != NULL,"Must be non null"); | |
295 assert(exception.not_null(),"Must be non null"); | |
296 if (exception->klass() == exception_type()) { | |
297 return (test_address(pc)); | |
298 } | |
299 | |
300 return NULL; | |
301 } | |
302 | |
303 | |
304 bool ExceptionCache::match_exception_with_space(Handle exception) { | |
305 assert(exception.not_null(),"Must be non null"); | |
306 if (exception->klass() == exception_type() && count() < cache_size) { | |
307 return true; | |
308 } | |
309 return false; | |
310 } | |
311 | |
312 | |
313 address ExceptionCache::test_address(address addr) { | |
314 for (int i=0; i<count(); i++) { | |
315 if (pc_at(i) == addr) { | |
316 return handler_at(i); | |
317 } | |
318 } | |
319 return NULL; | |
320 } | |
321 | |
322 | |
323 bool ExceptionCache::add_address_and_handler(address addr, address handler) { | |
324 if (test_address(addr) == handler) return true; | |
325 if (count() < cache_size) { | |
326 set_pc_at(count(),addr); | |
327 set_handler_at(count(), handler); | |
328 increment_count(); | |
329 return true; | |
330 } | |
331 return false; | |
332 } | |
333 | |
334 | |
335 // private method for handling exception cache | |
336 // These methods are private, and used to manipulate the exception cache | |
337 // directly. | |
338 ExceptionCache* nmethod::exception_cache_entry_for_exception(Handle exception) { | |
339 ExceptionCache* ec = exception_cache(); | |
340 while (ec != NULL) { | |
341 if (ec->match_exception_with_space(exception)) { | |
342 return ec; | |
343 } | |
344 ec = ec->next(); | |
345 } | |
346 return NULL; | |
347 } | |
348 | |
349 | |
350 //----------------------------------------------------------------------------- | |
351 | |
352 | |
353 // Helper used by both find_pc_desc methods. | |
354 static inline bool match_desc(PcDesc* pc, int pc_offset, bool approximate) { | |
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355 NOT_PRODUCT(++pc_nmethod_stats.pc_desc_tests); |
0 | 356 if (!approximate) |
357 return pc->pc_offset() == pc_offset; | |
358 else | |
359 return (pc-1)->pc_offset() < pc_offset && pc_offset <= pc->pc_offset(); | |
360 } | |
361 | |
362 void PcDescCache::reset_to(PcDesc* initial_pc_desc) { | |
363 if (initial_pc_desc == NULL) { | |
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364 _pc_descs[0] = NULL; // native method; no PcDescs at all |
0 | 365 return; |
366 } | |
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367 NOT_PRODUCT(++pc_nmethod_stats.pc_desc_resets); |
0 | 368 // reset the cache by filling it with benign (non-null) values |
369 assert(initial_pc_desc->pc_offset() < 0, "must be sentinel"); | |
370 for (int i = 0; i < cache_size; i++) | |
371 _pc_descs[i] = initial_pc_desc; | |
372 } | |
373 | |
374 PcDesc* PcDescCache::find_pc_desc(int pc_offset, bool approximate) { | |
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375 NOT_PRODUCT(++pc_nmethod_stats.pc_desc_queries); |
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376 NOT_PRODUCT(if (approximate) ++pc_nmethod_stats.pc_desc_approx); |
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377 |
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378 // Note: one might think that caching the most recently |
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379 // read value separately would be a win, but one would be |
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380 // wrong. When many threads are updating it, the cache |
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381 // line it's in would bounce between caches, negating |
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382 // any benefit. |
0 | 383 |
384 // In order to prevent race conditions do not load cache elements | |
385 // repeatedly, but use a local copy: | |
386 PcDesc* res; | |
387 | |
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388 // Step one: Check the most recently added value. |
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389 res = _pc_descs[0]; |
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390 if (res == NULL) return NULL; // native method; no PcDescs at all |
0 | 391 if (match_desc(res, pc_offset, approximate)) { |
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392 NOT_PRODUCT(++pc_nmethod_stats.pc_desc_repeats); |
0 | 393 return res; |
394 } | |
395 | |
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396 // Step two: Check the rest of the LRU cache. |
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397 for (int i = 1; i < cache_size; ++i) { |
0 | 398 res = _pc_descs[i]; |
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399 if (res->pc_offset() < 0) break; // optimization: skip empty cache |
0 | 400 if (match_desc(res, pc_offset, approximate)) { |
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401 NOT_PRODUCT(++pc_nmethod_stats.pc_desc_hits); |
0 | 402 return res; |
403 } | |
404 } | |
405 | |
406 // Report failure. | |
407 return NULL; | |
408 } | |
409 | |
410 void PcDescCache::add_pc_desc(PcDesc* pc_desc) { | |
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411 NOT_PRODUCT(++pc_nmethod_stats.pc_desc_adds); |
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412 // Update the LRU cache by shifting pc_desc forward. |
0 | 413 for (int i = 0; i < cache_size; i++) { |
414 PcDesc* next = _pc_descs[i]; | |
415 _pc_descs[i] = pc_desc; | |
416 pc_desc = next; | |
417 } | |
418 } | |
419 | |
420 // adjust pcs_size so that it is a multiple of both oopSize and | |
421 // sizeof(PcDesc) (assumes that if sizeof(PcDesc) is not a multiple | |
422 // of oopSize, then 2*sizeof(PcDesc) is) | |
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423 static int adjust_pcs_size(int pcs_size) { |
0 | 424 int nsize = round_to(pcs_size, oopSize); |
425 if ((nsize % sizeof(PcDesc)) != 0) { | |
426 nsize = pcs_size + sizeof(PcDesc); | |
427 } | |
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428 assert((nsize % oopSize) == 0, "correct alignment"); |
0 | 429 return nsize; |
430 } | |
431 | |
432 //----------------------------------------------------------------------------- | |
433 | |
434 | |
435 void nmethod::add_exception_cache_entry(ExceptionCache* new_entry) { | |
436 assert(ExceptionCache_lock->owned_by_self(),"Must hold the ExceptionCache_lock"); | |
437 assert(new_entry != NULL,"Must be non null"); | |
438 assert(new_entry->next() == NULL, "Must be null"); | |
439 | |
440 if (exception_cache() != NULL) { | |
441 new_entry->set_next(exception_cache()); | |
442 } | |
443 set_exception_cache(new_entry); | |
444 } | |
445 | |
446 void nmethod::remove_from_exception_cache(ExceptionCache* ec) { | |
447 ExceptionCache* prev = NULL; | |
448 ExceptionCache* curr = exception_cache(); | |
449 assert(curr != NULL, "nothing to remove"); | |
450 // find the previous and next entry of ec | |
451 while (curr != ec) { | |
452 prev = curr; | |
453 curr = curr->next(); | |
454 assert(curr != NULL, "ExceptionCache not found"); | |
455 } | |
456 // now: curr == ec | |
457 ExceptionCache* next = curr->next(); | |
458 if (prev == NULL) { | |
459 set_exception_cache(next); | |
460 } else { | |
461 prev->set_next(next); | |
462 } | |
463 delete curr; | |
464 } | |
465 | |
466 | |
467 // public method for accessing the exception cache | |
468 // These are the public access methods. | |
469 address nmethod::handler_for_exception_and_pc(Handle exception, address pc) { | |
470 // We never grab a lock to read the exception cache, so we may | |
471 // have false negatives. This is okay, as it can only happen during | |
472 // the first few exception lookups for a given nmethod. | |
473 ExceptionCache* ec = exception_cache(); | |
474 while (ec != NULL) { | |
475 address ret_val; | |
476 if ((ret_val = ec->match(exception,pc)) != NULL) { | |
477 return ret_val; | |
478 } | |
479 ec = ec->next(); | |
480 } | |
481 return NULL; | |
482 } | |
483 | |
484 | |
485 void nmethod::add_handler_for_exception_and_pc(Handle exception, address pc, address handler) { | |
486 // There are potential race conditions during exception cache updates, so we | |
487 // must own the ExceptionCache_lock before doing ANY modifications. Because | |
605 | 488 // we don't lock during reads, it is possible to have several threads attempt |
0 | 489 // to update the cache with the same data. We need to check for already inserted |
490 // copies of the current data before adding it. | |
491 | |
492 MutexLocker ml(ExceptionCache_lock); | |
493 ExceptionCache* target_entry = exception_cache_entry_for_exception(exception); | |
494 | |
495 if (target_entry == NULL || !target_entry->add_address_and_handler(pc,handler)) { | |
496 target_entry = new ExceptionCache(exception,pc,handler); | |
497 add_exception_cache_entry(target_entry); | |
498 } | |
499 } | |
500 | |
501 | |
502 //-------------end of code for ExceptionCache-------------- | |
503 | |
504 | |
505 int nmethod::total_size() const { | |
506 return | |
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507 consts_size() + |
1748 | 508 insts_size() + |
0 | 509 stub_size() + |
510 scopes_data_size() + | |
511 scopes_pcs_size() + | |
512 handler_table_size() + | |
513 nul_chk_table_size(); | |
514 } | |
515 | |
516 const char* nmethod::compile_kind() const { | |
517 if (is_osr_method()) return "osr"; | |
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518 if (method() != NULL && is_native_method()) return "c2n"; |
0 | 519 return NULL; |
520 } | |
521 | |
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522 // Fill in default values for various flag fields |
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523 void nmethod::init_defaults() { |
13441 | 524 _state = in_use; |
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525 _marked_for_reclamation = 0; |
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526 _has_flushed_dependencies = 0; |
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527 _has_unsafe_access = 0; |
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528 _has_method_handle_invokes = 0; |
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529 _lazy_critical_native = 0; |
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530 _has_wide_vectors = 0; |
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531 _marked_for_deoptimization = 0; |
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532 _lock_count = 0; |
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533 _stack_traversal_mark = 0; |
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534 _unload_reported = false; // jvmti state |
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535 |
1726 | 536 #ifdef ASSERT |
537 _oops_are_stale = false; | |
538 #endif | |
539 | |
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540 _oops_do_mark_link = NULL; |
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541 _jmethod_id = NULL; |
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542 _osr_link = NULL; |
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543 _scavenge_root_link = NULL; |
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544 _scavenge_root_state = 0; |
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545 _compiler = NULL; |
9707 | 546 #ifdef GRAAL |
547 _graal_installed_code = NULL; | |
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548 _speculation_log = NULL; |
9707 | 549 #endif |
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550 #ifdef HAVE_DTRACE_H |
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551 _trap_offset = 0; |
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552 #endif // def HAVE_DTRACE_H |
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553 } |
0 | 554 |
555 nmethod* nmethod::new_native_nmethod(methodHandle method, | |
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556 int compile_id, |
0 | 557 CodeBuffer *code_buffer, |
558 int vep_offset, | |
559 int frame_complete, | |
560 int frame_size, | |
561 ByteSize basic_lock_owner_sp_offset, | |
562 ByteSize basic_lock_sp_offset, | |
563 OopMapSet* oop_maps) { | |
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564 code_buffer->finalize_oop_references(method); |
0 | 565 // create nmethod |
566 nmethod* nm = NULL; | |
567 { | |
568 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
569 int native_nmethod_size = allocation_size(code_buffer, sizeof(nmethod)); | |
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570 CodeOffsets offsets; |
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571 offsets.set_value(CodeOffsets::Verified_Entry, vep_offset); |
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572 offsets.set_value(CodeOffsets::Frame_Complete, frame_complete); |
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573 nm = new (native_nmethod_size) nmethod(method(), native_nmethod_size, |
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574 compile_id, &offsets, |
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575 code_buffer, frame_size, |
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576 basic_lock_owner_sp_offset, |
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577 basic_lock_sp_offset, oop_maps); |
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578 if (nm != NULL) note_native_wrapper_nmethod(nm); |
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579 if (PrintAssembly && nm != NULL) { |
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580 Disassembler::decode(nm); |
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581 } |
0 | 582 } |
583 // verify nmethod | |
584 debug_only(if (nm) nm->verify();) // might block | |
585 | |
586 if (nm != NULL) { | |
587 nm->log_new_nmethod(); | |
588 } | |
589 | |
590 return nm; | |
591 } | |
592 | |
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593 #ifdef HAVE_DTRACE_H |
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594 nmethod* nmethod::new_dtrace_nmethod(methodHandle method, |
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595 CodeBuffer *code_buffer, |
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596 int vep_offset, |
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597 int trap_offset, |
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598 int frame_complete, |
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599 int frame_size) { |
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600 code_buffer->finalize_oop_references(method); |
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601 // create nmethod |
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602 nmethod* nm = NULL; |
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603 { |
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604 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
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605 int nmethod_size = allocation_size(code_buffer, sizeof(nmethod)); |
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606 CodeOffsets offsets; |
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607 offsets.set_value(CodeOffsets::Verified_Entry, vep_offset); |
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608 offsets.set_value(CodeOffsets::Dtrace_trap, trap_offset); |
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609 offsets.set_value(CodeOffsets::Frame_Complete, frame_complete); |
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610 |
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611 nm = new (nmethod_size) nmethod(method(), nmethod_size, |
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612 &offsets, code_buffer, frame_size); |
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613 |
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614 if (nm != NULL) note_java_nmethod(nm); |
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615 if (PrintAssembly && nm != NULL) { |
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616 Disassembler::decode(nm); |
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617 } |
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618 } |
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619 // verify nmethod |
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620 debug_only(if (nm) nm->verify();) // might block |
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621 |
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622 if (nm != NULL) { |
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623 nm->log_new_nmethod(); |
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624 } |
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625 |
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626 return nm; |
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627 } |
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628 |
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629 #endif // def HAVE_DTRACE_H |
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630 |
0 | 631 nmethod* nmethod::new_nmethod(methodHandle method, |
632 int compile_id, | |
633 int entry_bci, | |
634 CodeOffsets* offsets, | |
635 int orig_pc_offset, | |
636 DebugInformationRecorder* debug_info, | |
637 Dependencies* dependencies, | |
638 CodeBuffer* code_buffer, int frame_size, | |
639 OopMapSet* oop_maps, | |
640 ExceptionHandlerTable* handler_table, | |
641 ImplicitExceptionTable* nul_chk_table, | |
642 AbstractCompiler* compiler, | |
643 int comp_level | |
9707 | 644 #ifdef GRAAL |
645 , Handle installed_code, | |
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646 Handle speculationLog |
9707 | 647 #endif |
0 | 648 ) |
649 { | |
650 assert(debug_info->oop_recorder() == code_buffer->oop_recorder(), "shared OR"); | |
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651 code_buffer->finalize_oop_references(method); |
0 | 652 // create nmethod |
653 nmethod* nm = NULL; | |
654 { MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
655 int nmethod_size = | |
656 allocation_size(code_buffer, sizeof(nmethod)) | |
657 + adjust_pcs_size(debug_info->pcs_size()) | |
658 + round_to(dependencies->size_in_bytes() , oopSize) | |
659 + round_to(handler_table->size_in_bytes(), oopSize) | |
660 + round_to(nul_chk_table->size_in_bytes(), oopSize) | |
661 + round_to(debug_info->data_size() , oopSize); | |
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662 nm = new (nmethod_size) |
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663 nmethod(method(), nmethod_size, compile_id, entry_bci, offsets, |
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664 orig_pc_offset, debug_info, dependencies, code_buffer, frame_size, |
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665 oop_maps, |
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666 handler_table, |
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667 nul_chk_table, |
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668 compiler, |
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669 comp_level |
9707 | 670 #ifdef GRAAL |
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671 , installed_code, |
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672 speculationLog |
9707 | 673 #endif |
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674 ); |
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675 |
0 | 676 if (nm != NULL) { |
677 // To make dependency checking during class loading fast, record | |
678 // the nmethod dependencies in the classes it is dependent on. | |
679 // This allows the dependency checking code to simply walk the | |
680 // class hierarchy above the loaded class, checking only nmethods | |
681 // which are dependent on those classes. The slow way is to | |
682 // check every nmethod for dependencies which makes it linear in | |
683 // the number of methods compiled. For applications with a lot | |
684 // classes the slow way is too slow. | |
685 for (Dependencies::DepStream deps(nm); deps.next(); ) { | |
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686 Klass* klass = deps.context_type(); |
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687 if (klass == NULL) { |
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688 continue; // ignore things like evol_method |
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689 } |
0 | 690 |
691 // record this nmethod as dependent on this klass | |
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692 InstanceKlass::cast(klass)->add_dependent_nmethod(nm); |
0 | 693 } |
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694 if (nm != NULL) note_java_nmethod(nm); |
14909 | 695 if (PrintAssembly) { |
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696 Disassembler::decode(nm); |
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697 } |
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698 } |
0 | 699 } |
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700 // Do verification and logging outside CodeCache_lock. |
0 | 701 if (nm != NULL) { |
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702 // Safepoints in nmethod::verify aren't allowed because nm hasn't been installed yet. |
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703 DEBUG_ONLY(nm->verify();) |
0 | 704 nm->log_new_nmethod(); |
705 } | |
706 return nm; | |
707 } | |
708 | |
709 | |
710 // For native wrappers | |
711 nmethod::nmethod( | |
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712 Method* method, |
0 | 713 int nmethod_size, |
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714 int compile_id, |
0 | 715 CodeOffsets* offsets, |
716 CodeBuffer* code_buffer, | |
717 int frame_size, | |
718 ByteSize basic_lock_owner_sp_offset, | |
719 ByteSize basic_lock_sp_offset, | |
720 OopMapSet* oop_maps ) | |
721 : CodeBlob("native nmethod", code_buffer, sizeof(nmethod), | |
722 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, oop_maps), | |
2019 | 723 _native_receiver_sp_offset(basic_lock_owner_sp_offset), |
724 _native_basic_lock_sp_offset(basic_lock_sp_offset) | |
0 | 725 { |
726 { | |
727 debug_only(No_Safepoint_Verifier nsv;) | |
728 assert_locked_or_safepoint(CodeCache_lock); | |
729 | |
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730 init_defaults(); |
0 | 731 _method = method; |
732 _entry_bci = InvocationEntryBci; | |
733 // We have no exception handler or deopt handler make the | |
734 // values something that will never match a pc like the nmethod vtable entry | |
735 _exception_offset = 0; | |
736 _deoptimize_offset = 0; | |
1204 | 737 _deoptimize_mh_offset = 0; |
0 | 738 _orig_pc_offset = 0; |
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739 |
1748 | 740 _consts_offset = data_offset(); |
0 | 741 _stub_offset = data_offset(); |
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742 _oops_offset = data_offset(); |
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743 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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744 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
0 | 745 _scopes_pcs_offset = _scopes_data_offset; |
746 _dependencies_offset = _scopes_pcs_offset; | |
747 _handler_table_offset = _dependencies_offset; | |
748 _nul_chk_table_offset = _handler_table_offset; | |
749 _nmethod_end_offset = _nul_chk_table_offset; | |
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750 _compile_id = compile_id; |
0 | 751 _comp_level = CompLevel_none; |
1748 | 752 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
753 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
0 | 754 _osr_entry_point = NULL; |
755 _exception_cache = NULL; | |
756 _pc_desc_cache.reset_to(NULL); | |
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757 _hotness_counter = NMethodSweeper::hotness_counter_reset_val(); |
0 | 758 |
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759 code_buffer->copy_values_to(this); |
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760 if (ScavengeRootsInCode && detect_scavenge_root_oops()) { |
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761 CodeCache::add_scavenge_root_nmethod(this); |
12080 | 762 Universe::heap()->register_nmethod(this); |
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763 } |
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764 debug_only(verify_scavenge_root_oops()); |
0 | 765 CodeCache::commit(this); |
766 } | |
767 | |
768 if (PrintNativeNMethods || PrintDebugInfo || PrintRelocations || PrintDependencies) { | |
769 ttyLocker ttyl; // keep the following output all in one block | |
770 // This output goes directly to the tty, not the compiler log. | |
771 // To enable tools to match it up with the compilation activity, | |
772 // be sure to tag this tty output with the compile ID. | |
773 if (xtty != NULL) { | |
774 xtty->begin_head("print_native_nmethod"); | |
775 xtty->method(_method); | |
776 xtty->stamp(); | |
777 xtty->end_head(" address='" INTPTR_FORMAT "'", (intptr_t) this); | |
778 } | |
779 // print the header part first | |
780 print(); | |
781 // then print the requested information | |
782 if (PrintNativeNMethods) { | |
783 print_code(); | |
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784 if (oop_maps != NULL) { |
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785 oop_maps->print(); |
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786 } |
0 | 787 } |
788 if (PrintRelocations) { | |
789 print_relocations(); | |
790 } | |
791 if (xtty != NULL) { | |
792 xtty->tail("print_native_nmethod"); | |
793 } | |
794 } | |
795 } | |
796 | |
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797 // For dtrace wrappers |
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798 #ifdef HAVE_DTRACE_H |
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799 nmethod::nmethod( |
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800 Method* method, |
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801 int nmethod_size, |
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802 CodeOffsets* offsets, |
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803 CodeBuffer* code_buffer, |
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804 int frame_size) |
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805 : CodeBlob("dtrace nmethod", code_buffer, sizeof(nmethod), |
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806 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, NULL), |
2019 | 807 _native_receiver_sp_offset(in_ByteSize(-1)), |
808 _native_basic_lock_sp_offset(in_ByteSize(-1)) | |
116
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809 { |
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810 { |
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811 debug_only(No_Safepoint_Verifier nsv;) |
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812 assert_locked_or_safepoint(CodeCache_lock); |
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813 |
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814 init_defaults(); |
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815 _method = method; |
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816 _entry_bci = InvocationEntryBci; |
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817 // We have no exception handler or deopt handler make the |
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818 // values something that will never match a pc like the nmethod vtable entry |
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819 _exception_offset = 0; |
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820 _deoptimize_offset = 0; |
1204 | 821 _deoptimize_mh_offset = 0; |
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822 _unwind_handler_offset = -1; |
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823 _trap_offset = offsets->value(CodeOffsets::Dtrace_trap); |
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824 _orig_pc_offset = 0; |
1748 | 825 _consts_offset = data_offset(); |
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826 _stub_offset = data_offset(); |
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827 _oops_offset = data_offset(); |
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828 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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829 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
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830 _scopes_pcs_offset = _scopes_data_offset; |
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831 _dependencies_offset = _scopes_pcs_offset; |
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832 _handler_table_offset = _dependencies_offset; |
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833 _nul_chk_table_offset = _handler_table_offset; |
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834 _nmethod_end_offset = _nul_chk_table_offset; |
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835 _compile_id = 0; // default |
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836 _comp_level = CompLevel_none; |
1748 | 837 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
838 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
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839 _osr_entry_point = NULL; |
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840 _exception_cache = NULL; |
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841 _pc_desc_cache.reset_to(NULL); |
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842 _hotness_counter = NMethodSweeper::hotness_counter_reset_val(); |
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843 |
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844 code_buffer->copy_values_to(this); |
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845 debug_only(verify_scavenge_root_oops()); |
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846 CodeCache::commit(this); |
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847 } |
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848 |
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849 if (PrintNMethods || PrintDebugInfo || PrintRelocations || PrintDependencies) { |
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850 ttyLocker ttyl; // keep the following output all in one block |
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851 // This output goes directly to the tty, not the compiler log. |
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852 // To enable tools to match it up with the compilation activity, |
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853 // be sure to tag this tty output with the compile ID. |
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854 if (xtty != NULL) { |
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855 xtty->begin_head("print_dtrace_nmethod"); |
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856 xtty->method(_method); |
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857 xtty->stamp(); |
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858 xtty->end_head(" address='" INTPTR_FORMAT "'", (intptr_t) this); |
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859 } |
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860 // print the header part first |
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861 print(); |
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862 // then print the requested information |
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863 if (PrintNMethods) { |
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864 print_code(); |
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865 } |
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866 if (PrintRelocations) { |
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867 print_relocations(); |
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868 } |
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869 if (xtty != NULL) { |
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870 xtty->tail("print_dtrace_nmethod"); |
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871 } |
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872 } |
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873 } |
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874 #endif // def HAVE_DTRACE_H |
0 | 875 |
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876 void* nmethod::operator new(size_t size, int nmethod_size) throw() { |
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877 // Not critical, may return null if there is too little continuous memory |
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878 return CodeCache::allocate(nmethod_size); |
0 | 879 } |
880 | |
881 nmethod::nmethod( | |
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882 Method* method, |
0 | 883 int nmethod_size, |
884 int compile_id, | |
885 int entry_bci, | |
886 CodeOffsets* offsets, | |
887 int orig_pc_offset, | |
888 DebugInformationRecorder* debug_info, | |
889 Dependencies* dependencies, | |
890 CodeBuffer *code_buffer, | |
891 int frame_size, | |
892 OopMapSet* oop_maps, | |
893 ExceptionHandlerTable* handler_table, | |
894 ImplicitExceptionTable* nul_chk_table, | |
895 AbstractCompiler* compiler, | |
896 int comp_level | |
9707 | 897 #ifdef GRAAL |
898 , Handle installed_code, | |
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899 Handle speculation_log |
9707 | 900 #endif |
0 | 901 ) |
902 : CodeBlob("nmethod", code_buffer, sizeof(nmethod), | |
903 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, oop_maps), | |
2019 | 904 _native_receiver_sp_offset(in_ByteSize(-1)), |
905 _native_basic_lock_sp_offset(in_ByteSize(-1)) | |
0 | 906 { |
907 assert(debug_info->oop_recorder() == code_buffer->oop_recorder(), "shared OR"); | |
908 { | |
909 debug_only(No_Safepoint_Verifier nsv;) | |
910 assert_locked_or_safepoint(CodeCache_lock); | |
911 | |
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912 init_defaults(); |
0 | 913 _method = method; |
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914 _entry_bci = entry_bci; |
0 | 915 _compile_id = compile_id; |
916 _comp_level = comp_level; | |
917 _compiler = compiler; | |
918 _orig_pc_offset = orig_pc_offset; | |
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919 _hotness_counter = NMethodSweeper::hotness_counter_reset_val(); |
1748 | 920 |
921 // Section offsets | |
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922 _consts_offset = content_offset() + code_buffer->total_offset_of(code_buffer->consts()); |
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923 _stub_offset = content_offset() + code_buffer->total_offset_of(code_buffer->stubs()); |
0 | 924 |
9707 | 925 #ifdef GRAAL |
926 _graal_installed_code = installed_code(); | |
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927 _speculation_log = (instanceOop)speculation_log(); |
9707 | 928 #endif |
929 if (compiler->is_graal()) { | |
930 // Graal might not produce any stub sections | |
931 if (offsets->value(CodeOffsets::Exceptions) != -1) { | |
932 _exception_offset = code_offset() + offsets->value(CodeOffsets::Exceptions); | |
933 } else { | |
934 _exception_offset = -1; | |
935 } | |
936 if (offsets->value(CodeOffsets::Deopt) != -1) { | |
937 _deoptimize_offset = code_offset() + offsets->value(CodeOffsets::Deopt); | |
938 } else { | |
939 _deoptimize_offset = -1; | |
940 } | |
941 if (offsets->value(CodeOffsets::DeoptMH) != -1) { | |
942 _deoptimize_mh_offset = code_offset() + offsets->value(CodeOffsets::DeoptMH); | |
943 } else { | |
944 _deoptimize_mh_offset = -1; | |
945 } | |
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946 } else { |
9707 | 947 // Exception handler and deopt handler are in the stub section |
948 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must be set"); | |
949 assert(offsets->value(CodeOffsets::Deopt ) != -1, "must be set"); | |
950 | |
951 _exception_offset = _stub_offset + offsets->value(CodeOffsets::Exceptions); | |
952 _deoptimize_offset = _stub_offset + offsets->value(CodeOffsets::Deopt); | |
953 if (offsets->value(CodeOffsets::DeoptMH) != -1) { | |
954 _deoptimize_mh_offset = _stub_offset + offsets->value(CodeOffsets::DeoptMH); | |
955 } else { | |
956 _deoptimize_mh_offset = -1; | |
957 } | |
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958 } |
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959 if (offsets->value(CodeOffsets::UnwindHandler) != -1) { |
1748 | 960 _unwind_handler_offset = code_offset() + offsets->value(CodeOffsets::UnwindHandler); |
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961 } else { |
1748 | 962 _unwind_handler_offset = -1; |
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963 } |
1748 | 964 |
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965 _oops_offset = data_offset(); |
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966 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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967 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
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968 |
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969 _scopes_pcs_offset = _scopes_data_offset + round_to(debug_info->data_size (), oopSize); |
0 | 970 _dependencies_offset = _scopes_pcs_offset + adjust_pcs_size(debug_info->pcs_size()); |
971 _handler_table_offset = _dependencies_offset + round_to(dependencies->size_in_bytes (), oopSize); | |
972 _nul_chk_table_offset = _handler_table_offset + round_to(handler_table->size_in_bytes(), oopSize); | |
973 _nmethod_end_offset = _nul_chk_table_offset + round_to(nul_chk_table->size_in_bytes(), oopSize); | |
974 | |
1748 | 975 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
976 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
977 _osr_entry_point = code_begin() + offsets->value(CodeOffsets::OSR_Entry); | |
0 | 978 _exception_cache = NULL; |
979 _pc_desc_cache.reset_to(scopes_pcs_begin()); | |
980 | |
981 // Copy contents of ScopeDescRecorder to nmethod | |
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982 code_buffer->copy_values_to(this); |
0 | 983 debug_info->copy_to(this); |
984 dependencies->copy_to(this); | |
989
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985 if (ScavengeRootsInCode && detect_scavenge_root_oops()) { |
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986 CodeCache::add_scavenge_root_nmethod(this); |
12080 | 987 Universe::heap()->register_nmethod(this); |
989
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988 } |
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989 debug_only(verify_scavenge_root_oops()); |
0 | 990 |
991 CodeCache::commit(this); | |
992 | |
993 // Copy contents of ExceptionHandlerTable to nmethod | |
994 handler_table->copy_to(this); | |
995 nul_chk_table->copy_to(this); | |
996 | |
997 // we use the information of entry points to find out if a method is | |
998 // static or non static | |
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999 assert(compiler->is_c2() || compiler->is_graal() || |
0 | 1000 _method->is_static() == (entry_point() == _verified_entry_point), |
1001 " entry points must be same for static methods and vice versa"); | |
1002 } | |
1003 | |
100
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1004 bool printnmethods = PrintNMethods |
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1005 || CompilerOracle::should_print(_method) |
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1006 || CompilerOracle::has_option_string(_method, "PrintNMethods"); |
0 | 1007 if (printnmethods || PrintDebugInfo || PrintRelocations || PrintDependencies || PrintExceptionHandlers) { |
1008 print_nmethod(printnmethods); | |
1009 } | |
1010 } | |
1011 | |
1012 | |
1013 // Print a short set of xml attributes to identify this nmethod. The | |
1014 // output should be embedded in some other element. | |
1015 void nmethod::log_identity(xmlStream* log) const { | |
1016 log->print(" compile_id='%d'", compile_id()); | |
1017 const char* nm_kind = compile_kind(); | |
1018 if (nm_kind != NULL) log->print(" compile_kind='%s'", nm_kind); | |
1019 if (compiler() != NULL) { | |
1020 log->print(" compiler='%s'", compiler()->name()); | |
1021 } | |
1783 | 1022 if (TieredCompilation) { |
1023 log->print(" level='%d'", comp_level()); | |
1024 } | |
0 | 1025 } |
1026 | |
1027 | |
1028 #define LOG_OFFSET(log, name) \ | |
1029 if ((intptr_t)name##_end() - (intptr_t)name##_begin()) \ | |
1030 log->print(" " XSTR(name) "_offset='%d'" , \ | |
1031 (intptr_t)name##_begin() - (intptr_t)this) | |
1032 | |
1033 | |
1034 void nmethod::log_new_nmethod() const { | |
1035 if (LogCompilation && xtty != NULL) { | |
1036 ttyLocker ttyl; | |
1037 HandleMark hm; | |
1038 xtty->begin_elem("nmethod"); | |
1039 log_identity(xtty); | |
1748 | 1040 xtty->print(" entry='" INTPTR_FORMAT "' size='%d'", code_begin(), size()); |
0 | 1041 xtty->print(" address='" INTPTR_FORMAT "'", (intptr_t) this); |
1042 | |
1043 LOG_OFFSET(xtty, relocation); | |
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1044 LOG_OFFSET(xtty, consts); |
1748 | 1045 LOG_OFFSET(xtty, insts); |
0 | 1046 LOG_OFFSET(xtty, stub); |
1047 LOG_OFFSET(xtty, scopes_data); | |
1048 LOG_OFFSET(xtty, scopes_pcs); | |
1049 LOG_OFFSET(xtty, dependencies); | |
1050 LOG_OFFSET(xtty, handler_table); | |
1051 LOG_OFFSET(xtty, nul_chk_table); | |
1052 LOG_OFFSET(xtty, oops); | |
1053 | |
1054 xtty->method(method()); | |
1055 xtty->stamp(); | |
1056 xtty->end_elem(); | |
1057 } | |
1058 } | |
1059 | |
1060 #undef LOG_OFFSET | |
1061 | |
1062 | |
1063 // Print out more verbose output usually for a newly created nmethod. | |
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1064 void nmethod::print_on(outputStream* st, const char* msg) const { |
0 | 1065 if (st != NULL) { |
1066 ttyLocker ttyl; | |
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1067 if (WizardMode) { |
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1068 CompileTask::print_compilation(st, this, msg, /*short_form:*/ true); |
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1069 st->print_cr(" (" INTPTR_FORMAT ")", this); |
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1070 } else { |
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1071 CompileTask::print_compilation(st, this, msg, /*short_form:*/ false); |
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1072 } |
0 | 1073 } |
1074 } | |
1075 | |
1076 | |
1077 void nmethod::print_nmethod(bool printmethod) { | |
1078 ttyLocker ttyl; // keep the following output all in one block | |
1079 if (xtty != NULL) { | |
1080 xtty->begin_head("print_nmethod"); | |
1081 xtty->stamp(); | |
1082 xtty->end_head(); | |
1083 } | |
1084 // print the header part first | |
1085 print(); | |
1086 // then print the requested information | |
1087 if (printmethod) { | |
1088 print_code(); | |
1089 print_pcs(); | |
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1090 if (oop_maps()) { |
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1091 oop_maps()->print(); |
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1092 } |
0 | 1093 } |
1094 if (PrintDebugInfo) { | |
1095 print_scopes(); | |
1096 } | |
1097 if (PrintRelocations) { | |
1098 print_relocations(); | |
1099 } | |
1100 if (PrintDependencies) { | |
1101 print_dependencies(); | |
1102 } | |
1103 if (PrintExceptionHandlers) { | |
1104 print_handler_table(); | |
1105 print_nul_chk_table(); | |
1106 } | |
1107 if (xtty != NULL) { | |
1108 xtty->tail("print_nmethod"); | |
1109 } | |
1110 } | |
1111 | |
1112 | |
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1113 // Promote one word from an assembly-time handle to a live embedded oop. |
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1114 inline void nmethod::initialize_immediate_oop(oop* dest, jobject handle) { |
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1115 if (handle == NULL || |
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1116 // As a special case, IC oops are initialized to 1 or -1. |
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1117 handle == (jobject) Universe::non_oop_word()) { |
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1118 (*dest) = (oop) handle; |
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1119 } else { |
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1120 (*dest) = JNIHandles::resolve_non_null(handle); |
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1121 } |
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1122 } |
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1123 |
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1124 |
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1125 // Have to have the same name because it's called by a template |
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1126 void nmethod::copy_values(GrowableArray<jobject>* array) { |
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1127 int length = array->length(); |
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1128 assert((address)(oops_begin() + length) <= (address)oops_end(), "oops big enough"); |
1563
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1129 oop* dest = oops_begin(); |
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1130 for (int index = 0 ; index < length; index++) { |
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1131 initialize_immediate_oop(&dest[index], array->at(index)); |
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1132 } |
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1133 |
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1134 // Now we can fix up all the oops in the code. We need to do this |
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1135 // in the code because the assembler uses jobjects as placeholders. |
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1136 // The code and relocations have already been initialized by the |
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1137 // CodeBlob constructor, so it is valid even at this early point to |
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1138 // iterate over relocations and patch the code. |
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1139 fix_oop_relocations(NULL, NULL, /*initialize_immediates=*/ true); |
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1140 } |
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1141 |
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1142 void nmethod::copy_values(GrowableArray<Metadata*>* array) { |
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1143 int length = array->length(); |
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1144 assert((address)(metadata_begin() + length) <= (address)metadata_end(), "big enough"); |
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1145 Metadata** dest = metadata_begin(); |
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1146 for (int index = 0 ; index < length; index++) { |
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1147 dest[index] = array->at(index); |
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1148 } |
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1149 } |
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1150 |
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1151 bool nmethod::is_at_poll_return(address pc) { |
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1152 RelocIterator iter(this, pc, pc+1); |
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1153 while (iter.next()) { |
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1154 if (iter.type() == relocInfo::poll_return_type) |
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1155 return true; |
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1156 } |
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1157 return false; |
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1158 } |
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1159 |
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1160 |
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1161 bool nmethod::is_at_poll_or_poll_return(address pc) { |
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1162 RelocIterator iter(this, pc, pc+1); |
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1163 while (iter.next()) { |
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1164 relocInfo::relocType t = iter.type(); |
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1165 if (t == relocInfo::poll_return_type || t == relocInfo::poll_type) |
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1166 return true; |
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1167 } |
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1168 return false; |
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1169 } |
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1170 |
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1171 |
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1172 void nmethod::fix_oop_relocations(address begin, address end, bool initialize_immediates) { |
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1173 // re-patch all oop-bearing instructions, just in case some oops moved |
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1174 RelocIterator iter(this, begin, end); |
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1175 while (iter.next()) { |
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1176 if (iter.type() == relocInfo::oop_type) { |
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1177 oop_Relocation* reloc = iter.oop_reloc(); |
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1178 if (initialize_immediates && reloc->oop_is_immediate()) { |
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1179 oop* dest = reloc->oop_addr(); |
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1180 initialize_immediate_oop(dest, (jobject) *dest); |
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1181 } |
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1182 // Refresh the oop-related bits of this instruction. |
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1183 reloc->fix_oop_relocation(); |
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1184 } else if (iter.type() == relocInfo::metadata_type) { |
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1185 metadata_Relocation* reloc = iter.metadata_reloc(); |
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1186 reloc->fix_metadata_relocation(); |
1563
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
1538
diff
changeset
|
1187 } |
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
1538
diff
changeset
|
1188 } |
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
1538
diff
changeset
|
1189 } |
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
1538
diff
changeset
|
1190 |
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
1538
diff
changeset
|
1191 |
2375
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
2360
diff
changeset
|
1192 void nmethod::verify_oop_relocations() { |
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
2360
diff
changeset
|
1193 // Ensure sure that the code matches the current oop values |
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
2360
diff
changeset
|
1194 RelocIterator iter(this, NULL, NULL); |
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
2360
diff
changeset
|
1195 while (iter.next()) { |
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
2360
diff
changeset
|
1196 if (iter.type() == relocInfo::oop_type) { |
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
2360
diff
changeset
|
1197 oop_Relocation* reloc = iter.oop_reloc(); |
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
2360
diff
changeset
|
1198 if (!reloc->oop_is_immediate()) { |
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
2360
diff
changeset
|
1199 reloc->verify_oop_relocation(); |
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
2360
diff
changeset
|
1200 } |
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
2360
diff
changeset
|
1201 } |
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
2360
diff
changeset
|
1202 } |
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
2360
diff
changeset
|
1203 } |
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
2360
diff
changeset
|
1204 |
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
2360
diff
changeset
|
1205 |
0 | 1206 ScopeDesc* nmethod::scope_desc_at(address pc) { |
1207 PcDesc* pd = pc_desc_at(pc); | |
1208 guarantee(pd != NULL, "scope must be present"); | |
1209 return new ScopeDesc(this, pd->scope_decode_offset(), | |
9707 | 1210 pd->obj_decode_offset(), pd->should_reexecute(), pd->rethrow_exception(), |
1253
f70b0d9ab095
6910618: C2: Error: assert(d->is_oop(),"JVM_ArrayCopy: dst not an oop")
kvn
parents:
1250
diff
changeset
|
1211 pd->return_oop()); |
0 | 1212 } |
1213 | |
1214 | |
1215 void nmethod::clear_inline_caches() { | |
1216 assert(SafepointSynchronize::is_at_safepoint(), "cleaning of IC's only allowed at safepoint"); | |
1217 if (is_zombie()) { | |
1218 return; | |
1219 } | |
1220 | |
1221 RelocIterator iter(this); | |
1222 while (iter.next()) { | |
1223 iter.reloc()->clear_inline_cache(); | |
1224 } | |
1225 } | |
1226 | |
1227 | |
1228 void nmethod::cleanup_inline_caches() { | |
1229 | |
1538
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1490
diff
changeset
|
1230 assert_locked_or_safepoint(CompiledIC_lock); |
0 | 1231 |
1232 // If the method is not entrant or zombie then a JMP is plastered over the | |
1233 // first few bytes. If an oop in the old code was there, that oop | |
1234 // should not get GC'd. Skip the first few bytes of oops on | |
1235 // not-entrant methods. | |
1236 address low_boundary = verified_entry_point(); | |
1237 if (!is_in_use()) { | |
1238 low_boundary += NativeJump::instruction_size; | |
1239 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
1240 // This means that the low_boundary is going to be a little too high. | |
1241 // This shouldn't matter, since oops of non-entrant methods are never used. | |
1242 // In fact, why are we bothering to look at oops in a non-entrant method?? | |
1243 } | |
1244 | |
1245 // Find all calls in an nmethod, and clear the ones that points to zombie methods | |
1246 ResourceMark rm; | |
1247 RelocIterator iter(this, low_boundary); | |
1248 while(iter.next()) { | |
1249 switch(iter.type()) { | |
1250 case relocInfo::virtual_call_type: | |
1251 case relocInfo::opt_virtual_call_type: { | |
1252 CompiledIC *ic = CompiledIC_at(iter.reloc()); | |
1253 // Ok, to lookup references to zombies here | |
1254 CodeBlob *cb = CodeCache::find_blob_unsafe(ic->ic_destination()); | |
1255 if( cb != NULL && cb->is_nmethod() ) { | |
1256 nmethod* nm = (nmethod*)cb; | |
1257 // Clean inline caches pointing to both zombie and not_entrant methods | |
1202 | 1258 if (!nm->is_in_use() || (nm->method()->code() != nm)) ic->set_to_clean(); |
0 | 1259 } |
1260 break; | |
1261 } | |
1262 case relocInfo::static_call_type: { | |
1263 CompiledStaticCall *csc = compiledStaticCall_at(iter.reloc()); | |
1264 CodeBlob *cb = CodeCache::find_blob_unsafe(csc->destination()); | |
1265 if( cb != NULL && cb->is_nmethod() ) { | |
1266 nmethod* nm = (nmethod*)cb; | |
1267 // Clean inline caches pointing to both zombie and not_entrant methods | |
1202 | 1268 if (!nm->is_in_use() || (nm->method()->code() != nm)) csc->set_to_clean(); |
0 | 1269 } |
1270 break; | |
1271 } | |
1272 } | |
1273 } | |
1274 } | |
1275 | |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1276 // This is a private interface with the sweeper. |
0 | 1277 void nmethod::mark_as_seen_on_stack() { |
12324
510fbd28919c
8020151: PSR:PERF Large performance regressions when code cache is filled
anoll
parents:
12175
diff
changeset
|
1278 assert(is_alive(), "Must be an alive method"); |
1644
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
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parents:
1616
diff
changeset
|
1279 // Set the traversal mark to ensure that the sweeper does 2 |
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1280 // cleaning passes before moving to zombie. |
0 | 1281 set_stack_traversal_mark(NMethodSweeper::traversal_count()); |
1282 } | |
1283 | |
2342
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2321
diff
changeset
|
1284 // Tell if a non-entrant method can be converted to a zombie (i.e., |
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2321
diff
changeset
|
1285 // there are no activations on the stack, not in use by the VM, |
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2321
diff
changeset
|
1286 // and not in use by the ServiceThread) |
0 | 1287 bool nmethod::can_not_entrant_be_converted() { |
1288 assert(is_not_entrant(), "must be a non-entrant method"); | |
1289 | |
1290 // Since the nmethod sweeper only does partial sweep the sweeper's traversal | |
1291 // count can be greater than the stack traversal count before it hits the | |
1292 // nmethod for the second time. | |
2342
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2321
diff
changeset
|
1293 return stack_traversal_mark()+1 < NMethodSweeper::traversal_count() && |
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2321
diff
changeset
|
1294 !is_locked_by_vm(); |
0 | 1295 } |
1296 | |
1297 void nmethod::inc_decompile_count() { | |
9707 | 1298 if (!is_compiled_by_c2() && !is_compiled_by_graal()) return; |
0 | 1299 // Could be gated by ProfileTraps, but do not bother... |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1300 Method* m = method(); |
0 | 1301 if (m == NULL) return; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1302 MethodData* mdo = m->method_data(); |
0 | 1303 if (mdo == NULL) return; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1304 // There is a benign race here. See comments in methodData.hpp. |
0 | 1305 mdo->inc_decompile_count(); |
1306 } | |
1307 | |
1308 void nmethod::make_unloaded(BoolObjectClosure* is_alive, oop cause) { | |
1309 | |
1310 post_compiled_method_unload(); | |
1311 | |
1312 // Since this nmethod is being unloaded, make sure that dependencies | |
1313 // recorded in instanceKlasses get flushed and pass non-NULL closure to | |
1314 // indicate that this work is being done during a GC. | |
1315 assert(Universe::heap()->is_gc_active(), "should only be called during gc"); | |
1316 assert(is_alive != NULL, "Should be non-NULL"); | |
1317 // A non-NULL is_alive closure indicates that this is being called during GC. | |
1318 flush_dependencies(is_alive); | |
1319 | |
1320 // Break cycle between nmethod & method | |
1321 if (TraceClassUnloading && WizardMode) { | |
1322 tty->print_cr("[Class unloading: Making nmethod " INTPTR_FORMAT | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1323 " unloadable], Method*(" INTPTR_FORMAT |
0 | 1324 "), cause(" INTPTR_FORMAT ")", |
1325 this, (address)_method, (address)cause); | |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1326 if (!Universe::heap()->is_gc_active()) |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1327 cause->klass()->print(); |
0 | 1328 } |
941 | 1329 // Unlink the osr method, so we do not look this up again |
1330 if (is_osr_method()) { | |
1331 invalidate_osr_method(); | |
1332 } | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1333 // If _method is already NULL the Method* is about to be unloaded, |
0 | 1334 // so we don't have to break the cycle. Note that it is possible to |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1335 // have the Method* live here, in case we unload the nmethod because |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1336 // it is pointing to some oop (other than the Method*) being unloaded. |
0 | 1337 if (_method != NULL) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1338 // OSR methods point to the Method*, but the Method* does not |
0 | 1339 // point back! |
1340 if (_method->code() == this) { | |
1341 _method->clear_code(); // Break a cycle | |
1342 } | |
1343 _method = NULL; // Clear the method of this dead nmethod | |
1344 } | |
9707 | 1345 |
1346 #ifdef GRAAL | |
1347 // The method can only be unloaded after the pointer to the installed code | |
1348 // Java wrapper is no longer alive. Here we need to clear out this weak | |
1349 // reference to the dead object. | |
1350 if (_graal_installed_code != NULL) { | |
15161
2c940b1a48d8
Convert InstalledCode from an interface into an abstract class.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
14968
diff
changeset
|
1351 InstalledCode::set_address(_graal_installed_code, 0); |
9707 | 1352 _graal_installed_code = NULL; |
1353 } | |
1354 #endif | |
1355 | |
0 | 1356 // Make the class unloaded - i.e., change state and notify sweeper |
1538
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1490
diff
changeset
|
1357 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint"); |
0 | 1358 if (is_in_use()) { |
1359 // Transitioning directly from live to unloaded -- so | |
1360 // we need to force a cache clean-up; remember this | |
1361 // for later on. | |
1362 CodeCache::set_needs_cache_clean(true); | |
1363 } | |
1644
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1364 _state = unloaded; |
0 | 1365 |
1109
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1366 // Log the unloading. |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1367 log_state_change(); |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1368 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1369 // The Method* is gone at this point |
0 | 1370 assert(_method == NULL, "Tautology"); |
1371 | |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1372 set_osr_link(NULL); |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1373 //set_scavenge_root_link(NULL); // done by prune_scavenge_root_nmethods |
13074
78da3894b86f
8027593: performance drop with constrained codecache starting with hs25 b111
anoll
parents:
13071
diff
changeset
|
1374 NMethodSweeper::report_state_change(this); |
0 | 1375 } |
1376 | |
1377 void nmethod::invalidate_osr_method() { | |
1378 assert(_entry_bci != InvocationEntryBci, "wrong kind of nmethod"); | |
1379 // Remove from list of active nmethods | |
1380 if (method() != NULL) | |
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6806
diff
changeset
|
1381 method()->method_holder()->remove_osr_nmethod(this); |
0 | 1382 // Set entry as invalid |
1383 _entry_bci = InvalidOSREntryBci; | |
1384 } | |
1385 | |
1109
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1386 void nmethod::log_state_change() const { |
0 | 1387 if (LogCompilation) { |
1388 if (xtty != NULL) { | |
1389 ttyLocker ttyl; // keep the following output all in one block | |
1644
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1390 if (_state == unloaded) { |
1109
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1391 xtty->begin_elem("make_unloaded thread='" UINTX_FORMAT "'", |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1392 os::current_thread_id()); |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1393 } else { |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1394 xtty->begin_elem("make_not_entrant thread='" UINTX_FORMAT "'%s", |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
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parents:
994
diff
changeset
|
1395 os::current_thread_id(), |
1644
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
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diff
changeset
|
1396 (_state == zombie ? " zombie='1'" : "")); |
1109
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
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994
diff
changeset
|
1397 } |
0 | 1398 log_identity(xtty); |
1399 xtty->stamp(); | |
1400 xtty->end_elem(); | |
1401 } | |
1402 } | |
1644
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1403 if (PrintCompilation && _state != unloaded) { |
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2376
diff
changeset
|
1404 print_on(tty, _state == zombie ? "made zombie" : "made not entrant"); |
0 | 1405 } |
1406 } | |
1407 | |
13074
78da3894b86f
8027593: performance drop with constrained codecache starting with hs25 b111
anoll
parents:
13071
diff
changeset
|
1408 /** |
78da3894b86f
8027593: performance drop with constrained codecache starting with hs25 b111
anoll
parents:
13071
diff
changeset
|
1409 * Common functionality for both make_not_entrant and make_zombie |
78da3894b86f
8027593: performance drop with constrained codecache starting with hs25 b111
anoll
parents:
13071
diff
changeset
|
1410 */ |
1141 | 1411 bool nmethod::make_not_entrant_or_zombie(unsigned int state) { |
0 | 1412 assert(state == zombie || state == not_entrant, "must be zombie or not_entrant"); |
2342
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2321
diff
changeset
|
1413 assert(!is_zombie(), "should not already be a zombie"); |
0 | 1414 |
1644
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
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parents:
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diff
changeset
|
1415 // Make sure neither the nmethod nor the method is flushed in case of a safepoint in code below. |
0 | 1416 nmethodLocker nml(this); |
1644
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
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diff
changeset
|
1417 methodHandle the_method(method()); |
1726 | 1418 No_Safepoint_Verifier nsv; |
0 | 1419 |
12080 | 1420 // during patching, depending on the nmethod state we must notify the GC that |
1421 // code has been unloaded, unregistering it. We cannot do this right while | |
1422 // holding the Patching_lock because we need to use the CodeCache_lock. This | |
1423 // would be prone to deadlocks. | |
1424 // This flag is used to remember whether we need to later lock and unregister. | |
1425 bool nmethod_needs_unregister = false; | |
1426 | |
0 | 1427 { |
1109
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
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diff
changeset
|
1428 // invalidate osr nmethod before acquiring the patching lock since |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
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diff
changeset
|
1429 // they both acquire leaf locks and we don't want a deadlock. |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1430 // This logic is equivalent to the logic below for patching the |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
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diff
changeset
|
1431 // verified entry point of regular methods. |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1432 if (is_osr_method()) { |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1433 // this effectively makes the osr nmethod not entrant |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
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diff
changeset
|
1434 invalidate_osr_method(); |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
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diff
changeset
|
1435 } |
032260830071
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diff
changeset
|
1436 |
0 | 1437 // Enter critical section. Does not block for safepoint. |
1438 MutexLockerEx pl(Patching_lock, Mutex::_no_safepoint_check_flag); | |
1109
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
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diff
changeset
|
1439 |
1644
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6965184: possible races in make_not_entrant_or_zombie
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parents:
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diff
changeset
|
1440 if (_state == state) { |
1109
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
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diff
changeset
|
1441 // another thread already performed this transition so nothing |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1442 // to do, but return false to indicate this. |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1443 return false; |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1444 } |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1445 |
0 | 1446 // The caller can be calling the method statically or through an inline |
1447 // cache call. | |
1109
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1448 if (!is_osr_method() && !is_not_entrant()) { |
9707 | 1449 address stub = SharedRuntime::get_handle_wrong_method_stub(); |
1450 NativeJump::patch_verified_entry(entry_point(), verified_entry_point(), stub); | |
0 | 1451 } |
1452 | |
1644
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1453 if (is_in_use()) { |
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1454 // It's a true state change, so mark the method as decompiled. |
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1455 // Do it only for transition from alive. |
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1456 inc_decompile_count(); |
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1457 } |
1206
87684f1a88b5
6614597: Performance variability in jvm2008 xml.validation
kvn
parents:
1204
diff
changeset
|
1458 |
12080 | 1459 // If the state is becoming a zombie, signal to unregister the nmethod with |
1460 // the heap. | |
1461 // This nmethod may have already been unloaded during a full GC. | |
1462 if ((state == zombie) && !is_unloaded()) { | |
1463 nmethod_needs_unregister = true; | |
1464 } | |
1465 | |
12324
510fbd28919c
8020151: PSR:PERF Large performance regressions when code cache is filled
anoll
parents:
12175
diff
changeset
|
1466 // Must happen before state change. Otherwise we have a race condition in |
510fbd28919c
8020151: PSR:PERF Large performance regressions when code cache is filled
anoll
parents:
12175
diff
changeset
|
1467 // nmethod::can_not_entrant_be_converted(). I.e., a method can immediately |
510fbd28919c
8020151: PSR:PERF Large performance regressions when code cache is filled
anoll
parents:
12175
diff
changeset
|
1468 // transition its state from 'not_entrant' to 'zombie' without having to wait |
510fbd28919c
8020151: PSR:PERF Large performance regressions when code cache is filled
anoll
parents:
12175
diff
changeset
|
1469 // for stack scanning. |
510fbd28919c
8020151: PSR:PERF Large performance regressions when code cache is filled
anoll
parents:
12175
diff
changeset
|
1470 if (state == not_entrant) { |
510fbd28919c
8020151: PSR:PERF Large performance regressions when code cache is filled
anoll
parents:
12175
diff
changeset
|
1471 mark_as_seen_on_stack(); |
510fbd28919c
8020151: PSR:PERF Large performance regressions when code cache is filled
anoll
parents:
12175
diff
changeset
|
1472 OrderAccess::storestore(); |
510fbd28919c
8020151: PSR:PERF Large performance regressions when code cache is filled
anoll
parents:
12175
diff
changeset
|
1473 } |
510fbd28919c
8020151: PSR:PERF Large performance regressions when code cache is filled
anoll
parents:
12175
diff
changeset
|
1474 |
0 | 1475 // Change state |
1644
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1476 _state = state; |
1109
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1477 |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1478 // Log the transition once |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1479 log_state_change(); |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1480 |
1644
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1481 // Remove nmethod from method. |
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1482 // 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
|
1483 // 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
|
1484 // in Method* as seen in bugid 4947125. |
1644
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1485 // 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
|
1486 // 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
|
1487 // through it. |
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1488 if (method() != NULL && (method()->code() == this || |
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1489 method()->from_compiled_entry() == verified_entry_point())) { |
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1490 HandleMark hm; |
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1491 method()->clear_code(); |
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1492 } |
0 | 1493 } // leave critical region under Patching_lock |
1494 | |
1538
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1490
diff
changeset
|
1495 // When the nmethod becomes zombie it is no longer alive so the |
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1490
diff
changeset
|
1496 // dependencies must be flushed. nmethods in the not_entrant |
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1490
diff
changeset
|
1497 // state will be flushed later when the transition to zombie |
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1490
diff
changeset
|
1498 // happens or they get unloaded. |
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1490
diff
changeset
|
1499 if (state == zombie) { |
1726 | 1500 { |
1501 // Flushing dependecies must be done before any possible | |
1502 // safepoint can sneak in, otherwise the oops used by the | |
1503 // dependency logic could have become stale. | |
1504 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
12080 | 1505 if (nmethod_needs_unregister) { |
1506 Universe::heap()->unregister_nmethod(this); | |
1507 } | |
1726 | 1508 flush_dependencies(NULL); |
1509 } | |
1644
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1510 |
2342
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2321
diff
changeset
|
1511 // 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
|
1512 // 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
|
1513 // 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
|
1514 // 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
|
1515 // 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
|
1516 post_compiled_method_unload(); |
1726 | 1517 |
1518 #ifdef ASSERT | |
1519 // It's no longer safe to access the oops section since zombie | |
1520 // nmethods aren't scanned for GC. | |
1521 _oops_are_stale = true; | |
1522 #endif | |
12161
e1fbb86b47e4
8016277: Crash in nmethod::is_compiled_by_c1() on x86
roland
parents:
12080
diff
changeset
|
1523 // 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
|
1524 // nmethod is in zombie state |
e1fbb86b47e4
8016277: Crash in nmethod::is_compiled_by_c1() on x86
roland
parents:
12080
diff
changeset
|
1525 set_method(NULL); |
1538
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1490
diff
changeset
|
1526 } else { |
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1490
diff
changeset
|
1527 assert(state == not_entrant, "other cases may need to be handled differently"); |
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1490
diff
changeset
|
1528 } |
12414
98031e66de15
Fix unittests
Christos Kotselidis <christos.kotselidis@oracle.com>
parents:
12411
diff
changeset
|
1529 #ifdef GRAAL |
13230
01080e31692d
fixed crash when TraceCreateZombies is enabled
Doug Simon <doug.simon@oracle.com>
parents:
13102
diff
changeset
|
1530 if (_graal_installed_code != NULL) { |
15161
2c940b1a48d8
Convert InstalledCode from an interface into an abstract class.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
14968
diff
changeset
|
1531 // Break the link between nmethod and InstalledCode such that the nmethod can subsequently be flushed safely. |
2c940b1a48d8
Convert InstalledCode from an interface into an abstract class.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
14968
diff
changeset
|
1532 InstalledCode::set_address(_graal_installed_code, 0); |
13230
01080e31692d
fixed crash when TraceCreateZombies is enabled
Doug Simon <doug.simon@oracle.com>
parents:
13102
diff
changeset
|
1533 } |
12414
98031e66de15
Fix unittests
Christos Kotselidis <christos.kotselidis@oracle.com>
parents:
12411
diff
changeset
|
1534 #endif |
1538
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1490
diff
changeset
|
1535 |
0 | 1536 if (TraceCreateZombies) { |
9707 | 1537 ResourceMark m; |
13230
01080e31692d
fixed crash when TraceCreateZombies is enabled
Doug Simon <doug.simon@oracle.com>
parents:
13102
diff
changeset
|
1538 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 | 1539 } |
1540 | |
13074
78da3894b86f
8027593: performance drop with constrained codecache starting with hs25 b111
anoll
parents:
13071
diff
changeset
|
1541 NMethodSweeper::report_state_change(this); |
1109
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1542 return true; |
0 | 1543 } |
1544 | |
1545 void nmethod::flush() { | |
1546 // Note that there are no valid oops in the nmethod anymore. | |
1547 assert(is_zombie() || (is_osr_method() && is_unloaded()), "must be a zombie method"); | |
1548 assert(is_marked_for_reclamation() || (is_osr_method() && is_unloaded()), "must be marked for reclamation"); | |
1549 | |
1550 assert (!is_locked_by_vm(), "locked methods shouldn't be flushed"); | |
1538
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1490
diff
changeset
|
1551 assert_locked_or_safepoint(CodeCache_lock); |
0 | 1552 |
1553 // completely deallocate this method | |
4872
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4006
diff
changeset
|
1554 Events::log(JavaThread::current(), "flushing nmethod " INTPTR_FORMAT, this); |
0 | 1555 if (PrintMethodFlushing) { |
1202 | 1556 tty->print_cr("*flushing nmethod %3d/" INTPTR_FORMAT ". Live blobs:" UINT32_FORMAT "/Free CodeCache:" SIZE_FORMAT "Kb", |
1557 _compile_id, this, CodeCache::nof_blobs(), CodeCache::unallocated_capacity()/1024); | |
0 | 1558 } |
1559 | |
1560 // We need to deallocate any ExceptionCache data. | |
1561 // Note that we do not need to grab the nmethod lock for this, it | |
1562 // better be thread safe if we're disposing of it! | |
1563 ExceptionCache* ec = exception_cache(); | |
1564 set_exception_cache(NULL); | |
1565 while(ec != NULL) { | |
1566 ExceptionCache* next = ec->next(); | |
1567 delete ec; | |
1568 ec = next; | |
1569 } | |
1570 | |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1571 if (on_scavenge_root_list()) { |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1572 CodeCache::drop_scavenge_root_nmethod(this); |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1573 } |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1574 |
1692 | 1575 #ifdef SHARK |
1845
a222fcfba398
6990549: Zero and Shark fixes after 6978355 and 6953144
twisti
parents:
1784
diff
changeset
|
1576 ((SharkCompiler *) compiler())->free_compiled_method(insts_begin()); |
1692 | 1577 #endif // SHARK |
1578 | |
0 | 1579 ((CodeBlob*)(this))->flush(); |
1580 | |
1581 CodeCache::free(this); | |
1582 } | |
1583 | |
1584 | |
1585 // | |
1586 // Notify all classes this nmethod is dependent on that it is no | |
1587 // longer dependent. This should only be called in two situations. | |
1588 // First, when a nmethod transitions to a zombie all dependents need | |
1589 // to be clear. Since zombification happens at a safepoint there's no | |
1590 // synchronization issues. The second place is a little more tricky. | |
1591 // During phase 1 of mark sweep class unloading may happen and as a | |
1592 // result some nmethods may get unloaded. In this case the flushing | |
1593 // of dependencies must happen during phase 1 since after GC any | |
1594 // dependencies in the unloaded nmethod won't be updated, so | |
1595 // traversing the dependency information in unsafe. In that case this | |
1596 // function is called with a non-NULL argument and this function only | |
1597 // notifies instanceKlasses that are reachable | |
1598 | |
1599 void nmethod::flush_dependencies(BoolObjectClosure* is_alive) { | |
1538
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1490
diff
changeset
|
1600 assert_locked_or_safepoint(CodeCache_lock); |
0 | 1601 assert(Universe::heap()->is_gc_active() == (is_alive != NULL), |
1602 "is_alive is non-NULL if and only if we are called during GC"); | |
1603 if (!has_flushed_dependencies()) { | |
1604 set_has_flushed_dependencies(); | |
1605 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1606 Klass* klass = deps.context_type(); |
0 | 1607 if (klass == NULL) continue; // ignore things like evol_method |
1608 | |
1609 // During GC the is_alive closure is non-NULL, and is used to | |
1610 // 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
|
1611 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
|
1612 InstanceKlass::cast(klass)->remove_dependent_nmethod(this); |
0 | 1613 } |
1614 } | |
1615 } | |
1616 } | |
1617 | |
1618 | |
1619 // 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
|
1620 bool nmethod::can_unload(BoolObjectClosure* is_alive, oop* root, bool unloading_occurred) { |
0 | 1621 assert(root != NULL, "just checking"); |
1622 oop obj = *root; | |
1623 if (obj == NULL || is_alive->do_object_b(obj)) { | |
1624 return false; | |
1625 } | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1626 |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1627 // 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
|
1628 // 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
|
1629 // 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
|
1630 assert(unloading_occurred || ScavengeRootsInCode, "Inconsistency in unloading"); |
0 | 1631 make_unloaded(is_alive, obj); |
1632 return true; | |
1633 } | |
1634 | |
1635 // ------------------------------------------------------------------ | |
1636 // post_compiled_method_load_event | |
1637 // new method for install_code() path | |
1638 // Transfer information from compilation to jvmti | |
1639 void nmethod::post_compiled_method_load_event() { | |
1640 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1641 Method* moop = method(); |
14909 | 1642 #ifndef USDT2 |
1643 HS_DTRACE_PROBE8(hotspot, compiled__method__load, | |
1644 moop->klass_name()->bytes(), | |
1645 moop->klass_name()->utf8_length(), | |
1646 moop->name()->bytes(), | |
1647 moop->name()->utf8_length(), | |
1648 moop->signature()->bytes(), | |
1649 moop->signature()->utf8_length(), | |
1650 insts_begin(), insts_size()); | |
1651 #else /* USDT2 */ | |
4006 | 1652 HOTSPOT_COMPILED_METHOD_LOAD( |
1653 (char *) moop->klass_name()->bytes(), | |
1654 moop->klass_name()->utf8_length(), | |
1655 (char *) moop->name()->bytes(), | |
1656 moop->name()->utf8_length(), | |
1657 (char *) moop->signature()->bytes(), | |
1658 moop->signature()->utf8_length(), | |
1659 insts_begin(), insts_size()); | |
14909 | 1660 #endif /* USDT2 */ |
0 | 1661 |
1616
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1662 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
|
1663 JvmtiExport::should_post_compiled_method_unload()) { |
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1664 get_and_cache_jmethod_id(); |
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1665 } |
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1666 |
0 | 1667 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
|
1668 // Let the Service thread (which is a real Java thread) post the event |
bf8517f4e4d0
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1669 MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag); |
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1670 JvmtiDeferredEventQueue::enqueue( |
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1671 JvmtiDeferredEvent::compiled_method_load_event(this)); |
0 | 1672 } |
1673 } | |
1674 | |
1616
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|
1675 jmethodID nmethod::get_and_cache_jmethod_id() { |
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|
1676 if (_jmethod_id == NULL) { |
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never
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1677 // Cache the jmethod_id since it can no longer be looked up once the |
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never
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1678 // method itself has been marked for unloading. |
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never
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|
1679 _jmethod_id = method()->jmethod_id(); |
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never
parents:
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|
1680 } |
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never
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1681 return _jmethod_id; |
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never
parents:
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|
1682 } |
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never
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|
1683 |
0 | 1684 void nmethod::post_compiled_method_unload() { |
1577
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|
1685 if (unload_reported()) { |
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1686 // During unloading we transition to unloaded and then to zombie |
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1687 // and the unloading is reported during the first transition. |
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1688 return; |
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|
1689 } |
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|
1690 |
0 | 1691 assert(_method != NULL && !is_unloaded(), "just checking"); |
1692 DTRACE_METHOD_UNLOAD_PROBE(method()); | |
1693 | |
1694 // If a JVMTI agent has enabled the CompiledMethodUnload event then | |
1616
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1695 // post the event. Sometime later this nmethod will be made a zombie |
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1696 // by the sweeper but the Method* will not be valid at that point. |
1616
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1697 // If the _jmethod_id is null then no load event was ever requested |
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1698 // so don't bother posting the unload. The main reason for this is |
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1699 // that the jmethodID is a weak reference to the Method* so if |
1616
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1700 // it's being unloaded there's no way to look it up since the weak |
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1701 // ref will have been cleared. |
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1702 if (_jmethod_id != NULL && JvmtiExport::should_post_compiled_method_unload()) { |
0 | 1703 assert(!unload_reported(), "already unloaded"); |
2195
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1704 JvmtiDeferredEvent event = |
2342
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1705 JvmtiDeferredEvent::compiled_method_unload_event(this, |
2195
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1706 _jmethod_id, insts_begin()); |
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1707 if (SafepointSynchronize::is_at_safepoint()) { |
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1708 // Don't want to take the queueing lock. Add it as pending and |
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1709 // it will get enqueued later. |
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1710 JvmtiDeferredEventQueue::add_pending_event(event); |
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1711 } else { |
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1712 MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag); |
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1713 JvmtiDeferredEventQueue::enqueue(event); |
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1714 } |
0 | 1715 } |
1716 | |
1717 // The JVMTI CompiledMethodUnload event can be enabled or disabled at | |
1718 // any time. As the nmethod is being unloaded now we mark it has | |
1719 // having the unload event reported - this will ensure that we don't | |
1720 // attempt to report the event in the unlikely scenario where the | |
1721 // event is enabled at the time the nmethod is made a zombie. | |
1722 set_unload_reported(); | |
1723 } | |
1724 | |
1725 // This is called at the end of the strong tracing/marking phase of a | |
1726 // GC to unload an nmethod if it contains otherwise unreachable | |
1727 // oops. | |
1728 | |
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1729 void nmethod::do_unloading(BoolObjectClosure* is_alive, bool unloading_occurred) { |
0 | 1730 // Make sure the oop's ready to receive visitors |
1731 assert(!is_zombie() && !is_unloaded(), | |
1732 "should not call follow on zombie or unloaded nmethod"); | |
1733 | |
1734 // If the method is not entrant then a JMP is plastered over the | |
1735 // first few bytes. If an oop in the old code was there, that oop | |
1736 // should not get GC'd. Skip the first few bytes of oops on | |
1737 // not-entrant methods. | |
1738 address low_boundary = verified_entry_point(); | |
1739 if (is_not_entrant()) { | |
1740 low_boundary += NativeJump::instruction_size; | |
1741 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
1742 // (See comment above.) | |
1743 } | |
1744 | |
1745 // The RedefineClasses() API can cause the class unloading invariant | |
1746 // to no longer be true. See jvmtiExport.hpp for details. | |
1747 // Also, leave a debugging breadcrumb in local flag. | |
1748 bool a_class_was_redefined = JvmtiExport::has_redefined_a_class(); | |
1749 if (a_class_was_redefined) { | |
1750 // This set of the unloading_occurred flag is done before the | |
1751 // call to post_compiled_method_unload() so that the unloading | |
1752 // of this nmethod is reported. | |
1753 unloading_occurred = true; | |
1754 } | |
1755 | |
9707 | 1756 #ifdef GRAAL |
1757 // Follow Graal method | |
1758 if (_graal_installed_code != NULL) { | |
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1759 if (_graal_installed_code->is_a(HotSpotNmethod::klass()) && HotSpotNmethod::isDefault(_graal_installed_code)) { |
9707 | 1760 if (!is_alive->do_object_b(_graal_installed_code)) { |
1761 _graal_installed_code = NULL; | |
1762 } | |
1763 } else { | |
1764 if (can_unload(is_alive, (oop*)&_graal_installed_code, unloading_occurred)) { | |
1765 return; | |
1766 } | |
1767 } | |
1768 } | |
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Gilles Duboscq <duboscq@ssw.jku.at>
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|
1769 |
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|
1770 if (_speculation_log != NULL) { |
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1771 if (!is_alive->do_object_b(_speculation_log)) { |
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|
1772 _speculation_log = NULL; |
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|
1773 } |
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|
1774 } |
9707 | 1775 #endif |
1776 | |
0 | 1777 // Exception cache |
1778 ExceptionCache* ec = exception_cache(); | |
1779 while (ec != NULL) { | |
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1780 Klass* ex_klass = ec->exception_type(); |
0 | 1781 ExceptionCache* next_ec = ec->next(); |
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1782 if (ex_klass != NULL && !ex_klass->is_loader_alive(is_alive)) { |
0 | 1783 remove_from_exception_cache(ec); |
1784 } | |
1785 ec = next_ec; | |
1786 } | |
1787 | |
1788 // If class unloading occurred we first iterate over all inline caches and | |
1789 // clear ICs where the cached oop is referring to an unloaded klass or method. | |
1790 // The remaining live cached oops will be traversed in the relocInfo::oop_type | |
1791 // iteration below. | |
1792 if (unloading_occurred) { | |
1793 RelocIterator iter(this, low_boundary); | |
1794 while(iter.next()) { | |
1795 if (iter.type() == relocInfo::virtual_call_type) { | |
1796 CompiledIC *ic = CompiledIC_at(iter.reloc()); | |
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1797 if (ic->is_icholder_call()) { |
0 | 1798 // The only exception is compiledICHolder oops which may |
1799 // yet be marked below. (We check this further below). | |
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1800 CompiledICHolder* cichk_oop = ic->cached_icholder(); |
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1801 if (cichk_oop->holder_method()->method_holder()->is_loader_alive(is_alive) && |
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1802 cichk_oop->holder_klass()->is_loader_alive(is_alive)) { |
13441 | 1803 continue; |
1804 } | |
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1805 } else { |
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1806 Metadata* ic_oop = ic->cached_metadata(); |
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1807 if (ic_oop != NULL) { |
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1808 if (ic_oop->is_klass()) { |
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1809 if (((Klass*)ic_oop)->is_loader_alive(is_alive)) { |
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1810 continue; |
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1811 } |
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1812 } else if (ic_oop->is_method()) { |
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1813 if (((Method*)ic_oop)->method_holder()->is_loader_alive(is_alive)) { |
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1814 continue; |
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1815 } |
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1816 } else { |
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1817 ShouldNotReachHere(); |
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1818 } |
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1819 } |
13441 | 1820 } |
1821 ic->set_to_clean(); | |
0 | 1822 } |
1823 } | |
1824 } | |
1825 | |
1826 // Compiled code | |
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1827 { |
0 | 1828 RelocIterator iter(this, low_boundary); |
1829 while (iter.next()) { | |
1830 if (iter.type() == relocInfo::oop_type) { | |
1831 oop_Relocation* r = iter.oop_reloc(); | |
1832 // In this loop, we must only traverse those oops directly embedded in | |
1833 // the code. Other oops (oop_index>0) are seen as part of scopes_oops. | |
1834 assert(1 == (r->oop_is_immediate()) + | |
1835 (r->oop_addr() >= oops_begin() && r->oop_addr() < oops_end()), | |
1836 "oop must be found in exactly one place"); | |
1837 if (r->oop_is_immediate() && r->oop_value() != NULL) { | |
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1838 if (can_unload(is_alive, r->oop_addr(), unloading_occurred)) { |
0 | 1839 return; |
1840 } | |
1841 } | |
1842 } | |
1843 } | |
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1844 } |
0 | 1845 |
1846 | |
1847 // Scopes | |
1848 for (oop* p = oops_begin(); p < oops_end(); p++) { | |
1849 if (*p == Universe::non_oop_word()) continue; // skip non-oops | |
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1850 if (can_unload(is_alive, p, unloading_occurred)) { |
0 | 1851 return; |
1852 } | |
1853 } | |
1854 | |
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1855 // Ensure that all metadata is still alive |
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1856 verify_metadata_loaders(low_boundary, is_alive); |
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1857 } |
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1858 |
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1859 #ifdef ASSERT |
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1860 |
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1861 class CheckClass : AllStatic { |
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1862 static BoolObjectClosure* _is_alive; |
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1863 |
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1864 // Check class_loader is alive for this bit of metadata. |
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1865 static void check_class(Metadata* md) { |
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1866 Klass* klass = NULL; |
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1867 if (md->is_klass()) { |
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1868 klass = ((Klass*)md); |
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1869 } else if (md->is_method()) { |
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1870 klass = ((Method*)md)->method_holder(); |
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1871 } else if (md->is_methodData()) { |
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1872 klass = ((MethodData*)md)->method()->method_holder(); |
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1873 } else { |
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1874 md->print(); |
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1875 ShouldNotReachHere(); |
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1876 } |
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1877 assert(klass->is_loader_alive(_is_alive), "must be alive"); |
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1878 } |
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1879 public: |
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1880 static void do_check_class(BoolObjectClosure* is_alive, nmethod* nm) { |
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1881 assert(SafepointSynchronize::is_at_safepoint(), "this is only ok at safepoint"); |
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1882 _is_alive = is_alive; |
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1883 nm->metadata_do(check_class); |
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1884 } |
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1885 }; |
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1886 |
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1887 // This is called during a safepoint so can use static data |
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1888 BoolObjectClosure* CheckClass::_is_alive = NULL; |
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1889 #endif // ASSERT |
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1890 |
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1891 |
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1892 // Processing of oop references should have been sufficient to keep |
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1893 // all strong references alive. Any weak references should have been |
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1894 // cleared as well. Visit all the metadata and ensure that it's |
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1895 // really alive. |
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1896 void nmethod::verify_metadata_loaders(address low_boundary, BoolObjectClosure* is_alive) { |
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1897 #ifdef ASSERT |
0 | 1898 RelocIterator iter(this, low_boundary); |
1899 while (iter.next()) { | |
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1900 // static_stub_Relocations may have dangling references to |
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1901 // Method*s so trim them out here. Otherwise it looks like |
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1902 // compiled code is maintaining a link to dead metadata. |
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1903 address static_call_addr = NULL; |
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1904 if (iter.type() == relocInfo::opt_virtual_call_type) { |
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1905 CompiledIC* cic = CompiledIC_at(iter.reloc()); |
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1906 if (!cic->is_call_to_interpreted()) { |
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1907 static_call_addr = iter.addr(); |
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1908 } |
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1909 } else if (iter.type() == relocInfo::static_call_type) { |
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1910 CompiledStaticCall* csc = compiledStaticCall_at(iter.reloc()); |
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1911 if (!csc->is_call_to_interpreted()) { |
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1912 static_call_addr = iter.addr(); |
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1913 } |
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1914 } |
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1915 if (static_call_addr != NULL) { |
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1916 RelocIterator sciter(this, low_boundary); |
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1917 while (sciter.next()) { |
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1918 if (sciter.type() == relocInfo::static_stub_type && |
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1919 sciter.static_stub_reloc()->static_call() == static_call_addr) { |
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1920 sciter.static_stub_reloc()->clear_inline_cache(); |
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1921 } |
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1922 } |
0 | 1923 } |
1924 } | |
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1925 // Check that the metadata embedded in the nmethod is alive |
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1926 CheckClass::do_check_class(is_alive, this); |
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1927 #endif |
0 | 1928 } |
1929 | |
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1930 |
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1931 // Iterate over metadata calling this function. Used by RedefineClasses |
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1932 void nmethod::metadata_do(void f(Metadata*)) { |
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1933 address low_boundary = verified_entry_point(); |
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1934 if (is_not_entrant()) { |
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1935 low_boundary += NativeJump::instruction_size; |
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1936 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. |
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1937 // (See comment above.) |
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1938 } |
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1939 { |
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1940 // Visit all immediate references that are embedded in the instruction stream. |
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1941 RelocIterator iter(this, low_boundary); |
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1942 while (iter.next()) { |
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1943 if (iter.type() == relocInfo::metadata_type ) { |
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1944 metadata_Relocation* r = iter.metadata_reloc(); |
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1945 // In this lmetadata, we must only follow those metadatas directly embedded in |
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1946 // the code. Other metadatas (oop_index>0) are seen as part of |
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1947 // the metadata section below. |
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1948 assert(1 == (r->metadata_is_immediate()) + |
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1949 (r->metadata_addr() >= metadata_begin() && r->metadata_addr() < metadata_end()), |
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1950 "metadata must be found in exactly one place"); |
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1951 if (r->metadata_is_immediate() && r->metadata_value() != NULL) { |
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1952 Metadata* md = r->metadata_value(); |
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1953 f(md); |
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1954 } |
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1955 } else if (iter.type() == relocInfo::virtual_call_type) { |
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1956 // Check compiledIC holders associated with this nmethod |
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1957 CompiledIC *ic = CompiledIC_at(iter.reloc()); |
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1958 if (ic->is_icholder_call()) { |
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1959 CompiledICHolder* cichk = ic->cached_icholder(); |
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1960 f(cichk->holder_method()); |
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1961 f(cichk->holder_klass()); |
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1962 } else { |
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1963 Metadata* ic_oop = ic->cached_metadata(); |
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1964 if (ic_oop != NULL) { |
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1965 f(ic_oop); |
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1966 } |
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1967 } |
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1968 } |
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1969 } |
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1970 } |
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1971 |
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1972 // Visit the metadata section |
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1973 for (Metadata** p = metadata_begin(); p < metadata_end(); p++) { |
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1974 if (*p == Universe::non_oop_word() || *p == NULL) continue; // skip non-oops |
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1975 Metadata* md = *p; |
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1976 f(md); |
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1977 } |
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1978 |
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1979 // Call function Method*, not embedded in these other places. |
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1980 if (_method != NULL) f(_method); |
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1981 } |
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1982 |
12080 | 1983 void nmethod::oops_do(OopClosure* f, bool allow_zombie) { |
0 | 1984 // make sure the oops ready to receive visitors |
12080 | 1985 assert(allow_zombie || !is_zombie(), "should not call follow on zombie nmethod"); |
1986 assert(!is_unloaded(), "should not call follow on unloaded nmethod"); | |
0 | 1987 |
1988 // If the method is not entrant or zombie then a JMP is plastered over the | |
1989 // first few bytes. If an oop in the old code was there, that oop | |
1990 // should not get GC'd. Skip the first few bytes of oops on | |
1991 // not-entrant methods. | |
1992 address low_boundary = verified_entry_point(); | |
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1993 if (is_not_entrant()) { |
0 | 1994 low_boundary += NativeJump::instruction_size; |
1995 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
1996 // (See comment above.) | |
1997 } | |
1998 | |
9707 | 1999 #ifdef GRAAL |
2000 if (_graal_installed_code != NULL) { | |
2001 f->do_oop((oop*) &_graal_installed_code); | |
2002 } | |
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2003 if (_speculation_log != NULL) { |
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2004 f->do_oop((oop*) &_speculation_log); |
9707 | 2005 } |
2006 #endif | |
2007 | |
0 | 2008 RelocIterator iter(this, low_boundary); |
941 | 2009 |
0 | 2010 while (iter.next()) { |
2011 if (iter.type() == relocInfo::oop_type ) { | |
2012 oop_Relocation* r = iter.oop_reloc(); | |
2013 // In this loop, we must only follow those oops directly embedded in | |
2014 // the code. Other oops (oop_index>0) are seen as part of scopes_oops. | |
941 | 2015 assert(1 == (r->oop_is_immediate()) + |
2016 (r->oop_addr() >= oops_begin() && r->oop_addr() < oops_end()), | |
2017 "oop must be found in exactly one place"); | |
0 | 2018 if (r->oop_is_immediate() && r->oop_value() != NULL) { |
2019 f->do_oop(r->oop_addr()); | |
2020 } | |
2021 } | |
2022 } | |
2023 | |
2024 // Scopes | |
989
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2025 // This includes oop constants not inlined in the code stream. |
0 | 2026 for (oop* p = oops_begin(); p < oops_end(); p++) { |
2027 if (*p == Universe::non_oop_word()) continue; // skip non-oops | |
2028 f->do_oop(p); | |
2029 } | |
2030 } | |
2031 | |
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2032 #define NMETHOD_SENTINEL ((nmethod*)badAddress) |
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2033 |
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2034 nmethod* volatile nmethod::_oops_do_mark_nmethods; |
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2035 |
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2036 // An nmethod is "marked" if its _mark_link is set non-null. |
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2037 // Even if it is the end of the linked list, it will have a non-null link value, |
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2038 // as long as it is on the list. |
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2039 // This code must be MP safe, because it is used from parallel GC passes. |
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2040 bool nmethod::test_set_oops_do_mark() { |
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2041 assert(nmethod::oops_do_marking_is_active(), "oops_do_marking_prologue must be called"); |
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2042 nmethod* observed_mark_link = _oops_do_mark_link; |
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2043 if (observed_mark_link == NULL) { |
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2044 // Claim this nmethod for this thread to mark. |
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2045 observed_mark_link = (nmethod*) |
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2046 Atomic::cmpxchg_ptr(NMETHOD_SENTINEL, &_oops_do_mark_link, NULL); |
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2047 if (observed_mark_link == NULL) { |
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2048 |
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2049 // Atomically append this nmethod (now claimed) to the head of the list: |
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2050 nmethod* observed_mark_nmethods = _oops_do_mark_nmethods; |
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2051 for (;;) { |
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2052 nmethod* required_mark_nmethods = observed_mark_nmethods; |
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2053 _oops_do_mark_link = required_mark_nmethods; |
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2054 observed_mark_nmethods = (nmethod*) |
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2055 Atomic::cmpxchg_ptr(this, &_oops_do_mark_nmethods, required_mark_nmethods); |
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2056 if (observed_mark_nmethods == required_mark_nmethods) |
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2057 break; |
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2058 } |
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2059 // Mark was clear when we first saw this guy. |
2405
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2060 NOT_PRODUCT(if (TraceScavenge) print_on(tty, "oops_do, mark")); |
989
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2061 return false; |
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2062 } |
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2063 } |
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2064 // On fall through, another racing thread marked this nmethod before we did. |
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2065 return true; |
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2066 } |
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2067 |
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2068 void nmethod::oops_do_marking_prologue() { |
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2069 NOT_PRODUCT(if (TraceScavenge) tty->print_cr("[oops_do_marking_prologue")); |
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2070 assert(_oops_do_mark_nmethods == NULL, "must not call oops_do_marking_prologue twice in a row"); |
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2071 // We use cmpxchg_ptr instead of regular assignment here because the user |
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2072 // may fork a bunch of threads, and we need them all to see the same state. |
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2073 void* observed = Atomic::cmpxchg_ptr(NMETHOD_SENTINEL, &_oops_do_mark_nmethods, NULL); |
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2074 guarantee(observed == NULL, "no races in this sequential code"); |
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2075 } |
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2076 |
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2077 void nmethod::oops_do_marking_epilogue() { |
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2078 assert(_oops_do_mark_nmethods != NULL, "must not call oops_do_marking_epilogue twice in a row"); |
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2079 nmethod* cur = _oops_do_mark_nmethods; |
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2080 while (cur != NMETHOD_SENTINEL) { |
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2081 assert(cur != NULL, "not NULL-terminated"); |
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2082 nmethod* next = cur->_oops_do_mark_link; |
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2083 cur->_oops_do_mark_link = NULL; |
2375
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
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2084 cur->fix_oop_relocations(); |
2405
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2085 NOT_PRODUCT(if (TraceScavenge) cur->print_on(tty, "oops_do, unmark")); |
989
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2086 cur = next; |
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2087 } |
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2088 void* required = _oops_do_mark_nmethods; |
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2089 void* observed = Atomic::cmpxchg_ptr(NULL, &_oops_do_mark_nmethods, required); |
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2090 guarantee(observed == required, "no races in this sequential code"); |
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2091 NOT_PRODUCT(if (TraceScavenge) tty->print_cr("oops_do_marking_epilogue]")); |
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|
2092 } |
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|
2093 |
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2094 class DetectScavengeRoot: public OopClosure { |
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|
2095 bool _detected_scavenge_root; |
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|
2096 public: |
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2097 DetectScavengeRoot() : _detected_scavenge_root(false) |
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2098 { NOT_PRODUCT(_print_nm = NULL); } |
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2099 bool detected_scavenge_root() { return _detected_scavenge_root; } |
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2100 virtual void do_oop(oop* p) { |
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2101 if ((*p) != NULL && (*p)->is_scavengable()) { |
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2102 NOT_PRODUCT(maybe_print(p)); |
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|
2103 _detected_scavenge_root = true; |
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|
2104 } |
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|
2105 } |
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|
2106 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
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|
2107 |
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|
2108 #ifndef PRODUCT |
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|
2109 nmethod* _print_nm; |
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|
2110 void maybe_print(oop* p) { |
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|
2111 if (_print_nm == NULL) return; |
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|
2112 if (!_detected_scavenge_root) _print_nm->print_on(tty, "new scavenge root"); |
3377
2aa9ddbb9e60
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
2405
diff
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|
2113 tty->print_cr(""PTR_FORMAT"[offset=%d] detected scavengable oop "PTR_FORMAT" (found at "PTR_FORMAT")", |
989
148e5441d916
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|
2114 _print_nm, (int)((intptr_t)p - (intptr_t)_print_nm), |
12316
190899198332
7195622: CheckUnhandledOops has limited usefulness now
hseigel
parents:
12175
diff
changeset
|
2115 (void *)(*p), (intptr_t)p); |
989
148e5441d916
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|
2116 (*p)->print(); |
148e5441d916
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|
2117 } |
148e5441d916
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|
2118 #endif //PRODUCT |
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|
2119 }; |
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|
2120 |
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|
2121 bool nmethod::detect_scavenge_root_oops() { |
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2122 DetectScavengeRoot detect_scavenge_root; |
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|
2123 NOT_PRODUCT(if (TraceScavenge) detect_scavenge_root._print_nm = this); |
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2124 oops_do(&detect_scavenge_root); |
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2125 return detect_scavenge_root.detected_scavenge_root(); |
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|
2126 } |
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|
2127 |
0 | 2128 // Method that knows how to preserve outgoing arguments at call. This method must be |
2129 // called with a frame corresponding to a Java invoke | |
2130 void nmethod::preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { | |
1692 | 2131 #ifndef SHARK |
0 | 2132 if (!method()->is_native()) { |
2133 SimpleScopeDesc ssd(this, fr.pc()); | |
2142 | 2134 Bytecode_invoke call(ssd.method(), ssd.bci()); |
10390 | 2135 bool has_receiver = call.has_receiver(); |
2136 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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|
2137 Symbol* signature = call.signature(); |
10390 | 2138 fr.oops_compiled_arguments_do(signature, has_receiver, has_appendix, reg_map, f); |
0 | 2139 } |
1692 | 2140 #endif // !SHARK |
0 | 2141 } |
2142 | |
2143 | |
2144 oop nmethod::embeddedOop_at(u_char* p) { | |
2349
4cd9add59b1e
7024866: # assert(limit == NULL || limit <= nm->code_end()) failed: in bounds
never
parents:
2321
diff
changeset
|
2145 RelocIterator iter(this, p, p + 1); |
0 | 2146 while (iter.next()) |
2147 if (iter.type() == relocInfo::oop_type) { | |
2148 return iter.oop_reloc()->oop_value(); | |
2149 } | |
2150 return NULL; | |
2151 } | |
2152 | |
2153 | |
2154 inline bool includes(void* p, void* from, void* to) { | |
2155 return from <= p && p < to; | |
2156 } | |
2157 | |
2158 | |
2159 void nmethod::copy_scopes_pcs(PcDesc* pcs, int count) { | |
2160 assert(count >= 2, "must be sentinel values, at least"); | |
2161 | |
2162 #ifdef ASSERT | |
2163 // must be sorted and unique; we do a binary search in find_pc_desc() | |
2164 int prev_offset = pcs[0].pc_offset(); | |
2165 assert(prev_offset == PcDesc::lower_offset_limit, | |
2166 "must start with a sentinel"); | |
2167 for (int i = 1; i < count; i++) { | |
2168 int this_offset = pcs[i].pc_offset(); | |
2169 assert(this_offset > prev_offset, "offsets must be sorted"); | |
2170 prev_offset = this_offset; | |
2171 } | |
2172 assert(prev_offset == PcDesc::upper_offset_limit, | |
2173 "must end with a sentinel"); | |
2174 #endif //ASSERT | |
2175 | |
1135
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|
2176 // Search for MethodHandle invokes and tag the nmethod. |
e66fd840cb6b
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|
2177 for (int i = 0; i < count; i++) { |
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|
2178 if (pcs[i].is_method_handle_invoke()) { |
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|
2179 set_has_method_handle_invokes(true); |
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diff
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|
2180 break; |
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1109
diff
changeset
|
2181 } |
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diff
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|
2182 } |
2083
7d9caaedafce
6990933: assert(sender_cb) failed: sanity in frame::sender_for_interpreter_frame
twisti
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1972
diff
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|
2183 assert(has_method_handle_invokes() == (_deoptimize_mh_offset != -1), "must have deopt mh handler"); |
1135
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|
2184 |
0 | 2185 int size = count * sizeof(PcDesc); |
2186 assert(scopes_pcs_size() >= size, "oob"); | |
2187 memcpy(scopes_pcs_begin(), pcs, size); | |
2188 | |
2189 // Adjust the final sentinel downward. | |
2190 PcDesc* last_pc = &scopes_pcs_begin()[count-1]; | |
2191 assert(last_pc->pc_offset() == PcDesc::upper_offset_limit, "sanity"); | |
1748 | 2192 last_pc->set_pc_offset(content_size() + 1); |
0 | 2193 for (; last_pc + 1 < scopes_pcs_end(); last_pc += 1) { |
2194 // Fill any rounding gaps with copies of the last record. | |
2195 last_pc[1] = last_pc[0]; | |
2196 } | |
2197 // The following assert could fail if sizeof(PcDesc) is not | |
2198 // an integral multiple of oopSize (the rounding term). | |
2199 // If it fails, change the logic to always allocate a multiple | |
2200 // of sizeof(PcDesc), and fill unused words with copies of *last_pc. | |
2201 assert(last_pc + 1 == scopes_pcs_end(), "must match exactly"); | |
2202 } | |
2203 | |
2204 void nmethod::copy_scopes_data(u_char* buffer, int size) { | |
2205 assert(scopes_data_size() >= size, "oob"); | |
2206 memcpy(scopes_data_begin(), buffer, size); | |
2207 } | |
2208 | |
2209 | |
2210 #ifdef ASSERT | |
2211 static PcDesc* linear_search(nmethod* nm, int pc_offset, bool approximate) { | |
2212 PcDesc* lower = nm->scopes_pcs_begin(); | |
2213 PcDesc* upper = nm->scopes_pcs_end(); | |
2214 lower += 1; // exclude initial sentinel | |
2215 PcDesc* res = NULL; | |
2216 for (PcDesc* p = lower; p < upper; p++) { | |
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2217 NOT_PRODUCT(--pc_nmethod_stats.pc_desc_tests); // don't count this call to match_desc |
0 | 2218 if (match_desc(p, pc_offset, approximate)) { |
2219 if (res == NULL) | |
2220 res = p; | |
2221 else | |
2222 res = (PcDesc*) badAddress; | |
2223 } | |
2224 } | |
2225 return res; | |
2226 } | |
2227 #endif | |
2228 | |
2229 | |
2230 // Finds a PcDesc with real-pc equal to "pc" | |
2231 PcDesc* nmethod::find_pc_desc_internal(address pc, bool approximate) { | |
1748 | 2232 address base_address = code_begin(); |
0 | 2233 if ((pc < base_address) || |
2234 (pc - base_address) >= (ptrdiff_t) PcDesc::upper_offset_limit) { | |
2235 return NULL; // PC is wildly out of range | |
2236 } | |
2237 int pc_offset = (int) (pc - base_address); | |
2238 | |
2239 // Check the PcDesc cache if it contains the desired PcDesc | |
2240 // (This as an almost 100% hit rate.) | |
2241 PcDesc* res = _pc_desc_cache.find_pc_desc(pc_offset, approximate); | |
2242 if (res != NULL) { | |
2243 assert(res == linear_search(this, pc_offset, approximate), "cache ok"); | |
2244 return res; | |
2245 } | |
2246 | |
2247 // Fallback algorithm: quasi-linear search for the PcDesc | |
2248 // Find the last pc_offset less than the given offset. | |
2249 // The successor must be the required match, if there is a match at all. | |
2250 // (Use a fixed radix to avoid expensive affine pointer arithmetic.) | |
2251 PcDesc* lower = scopes_pcs_begin(); | |
2252 PcDesc* upper = scopes_pcs_end(); | |
2253 upper -= 1; // exclude final sentinel | |
2254 if (lower >= upper) return NULL; // native method; no PcDescs at all | |
2255 | |
2256 #define assert_LU_OK \ | |
2257 /* invariant on lower..upper during the following search: */ \ | |
2258 assert(lower->pc_offset() < pc_offset, "sanity"); \ | |
2259 assert(upper->pc_offset() >= pc_offset, "sanity") | |
2260 assert_LU_OK; | |
2261 | |
2262 // Use the last successful return as a split point. | |
2263 PcDesc* mid = _pc_desc_cache.last_pc_desc(); | |
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2264 NOT_PRODUCT(++pc_nmethod_stats.pc_desc_searches); |
0 | 2265 if (mid->pc_offset() < pc_offset) { |
2266 lower = mid; | |
2267 } else { | |
2268 upper = mid; | |
2269 } | |
2270 | |
2271 // Take giant steps at first (4096, then 256, then 16, then 1) | |
2272 const int LOG2_RADIX = 4 /*smaller steps in debug mode:*/ debug_only(-1); | |
2273 const int RADIX = (1 << LOG2_RADIX); | |
2274 for (int step = (1 << (LOG2_RADIX*3)); step > 1; step >>= LOG2_RADIX) { | |
2275 while ((mid = lower + step) < upper) { | |
2276 assert_LU_OK; | |
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2277 NOT_PRODUCT(++pc_nmethod_stats.pc_desc_searches); |
0 | 2278 if (mid->pc_offset() < pc_offset) { |
2279 lower = mid; | |
2280 } else { | |
2281 upper = mid; | |
2282 break; | |
2283 } | |
2284 } | |
2285 assert_LU_OK; | |
2286 } | |
2287 | |
2288 // Sneak up on the value with a linear search of length ~16. | |
2289 while (true) { | |
2290 assert_LU_OK; | |
2291 mid = lower + 1; | |
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2292 NOT_PRODUCT(++pc_nmethod_stats.pc_desc_searches); |
0 | 2293 if (mid->pc_offset() < pc_offset) { |
2294 lower = mid; | |
2295 } else { | |
2296 upper = mid; | |
2297 break; | |
2298 } | |
2299 } | |
2300 #undef assert_LU_OK | |
2301 | |
2302 if (match_desc(upper, pc_offset, approximate)) { | |
2303 assert(upper == linear_search(this, pc_offset, approximate), "search ok"); | |
2304 _pc_desc_cache.add_pc_desc(upper); | |
2305 return upper; | |
2306 } else { | |
2307 assert(NULL == linear_search(this, pc_offset, approximate), "search ok"); | |
2308 return NULL; | |
2309 } | |
2310 } | |
2311 | |
2312 | |
14909 | 2313 bool nmethod::check_all_dependencies() { |
2314 bool found_check = false; | |
2315 // wholesale check of all dependencies | |
2316 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
2317 if (deps.check_dependency() != NULL) { | |
2318 found_check = true; | |
2319 NOT_DEBUG(break); | |
0 | 2320 } |
2321 } | |
14909 | 2322 return found_check; // tell caller if we found anything |
0 | 2323 } |
2324 | |
2325 bool nmethod::check_dependency_on(DepChange& changes) { | |
2326 // What has happened: | |
2327 // 1) a new class dependee has been added | |
2328 // 2) dependee and all its super classes have been marked | |
2329 bool found_check = false; // set true if we are upset | |
2330 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
2331 // Evaluate only relevant dependencies. | |
2332 if (deps.spot_check_dependency_at(changes) != NULL) { | |
2333 found_check = true; | |
2334 NOT_DEBUG(break); | |
2335 } | |
2336 } | |
2337 return found_check; | |
2338 } | |
2339 | |
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2340 bool nmethod::is_evol_dependent_on(Klass* dependee) { |
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2341 InstanceKlass *dependee_ik = InstanceKlass::cast(dependee); |
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2342 Array<Method*>* dependee_methods = dependee_ik->methods(); |
0 | 2343 for (Dependencies::DepStream deps(this); deps.next(); ) { |
2344 if (deps.type() == Dependencies::evol_method) { | |
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2345 Method* method = deps.method_argument(0); |
0 | 2346 for (int j = 0; j < dependee_methods->length(); j++) { |
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2347 if (dependee_methods->at(j) == method) { |
0 | 2348 // RC_TRACE macro has an embedded ResourceMark |
2349 RC_TRACE(0x01000000, | |
2350 ("Found evol dependency of nmethod %s.%s(%s) compile_id=%d on method %s.%s(%s)", | |
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2351 _method->method_holder()->external_name(), |
0 | 2352 _method->name()->as_C_string(), |
2353 _method->signature()->as_C_string(), compile_id(), | |
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2354 method->method_holder()->external_name(), |
0 | 2355 method->name()->as_C_string(), |
2356 method->signature()->as_C_string())); | |
2357 if (TraceDependencies || LogCompilation) | |
2358 deps.log_dependency(dependee); | |
2359 return true; | |
2360 } | |
2361 } | |
2362 } | |
2363 } | |
2364 return false; | |
2365 } | |
2366 | |
2367 // Called from mark_for_deoptimization, when dependee is invalidated. | |
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2368 bool nmethod::is_dependent_on_method(Method* dependee) { |
0 | 2369 for (Dependencies::DepStream deps(this); deps.next(); ) { |
2370 if (deps.type() != Dependencies::evol_method) | |
2371 continue; | |
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2372 Method* method = deps.method_argument(0); |
0 | 2373 if (method == dependee) return true; |
2374 } | |
2375 return false; | |
2376 } | |
2377 | |
2378 | |
2379 bool nmethod::is_patchable_at(address instr_addr) { | |
1748 | 2380 assert(insts_contains(instr_addr), "wrong nmethod used"); |
0 | 2381 if (is_zombie()) { |
2382 // a zombie may never be patched | |
2383 return false; | |
2384 } | |
2385 return true; | |
2386 } | |
2387 | |
2388 | |
2389 address nmethod::continuation_for_implicit_exception(address pc) { | |
2390 // Exception happened outside inline-cache check code => we are inside | |
2391 // an active nmethod => use cpc to determine a return address | |
1748 | 2392 int exception_offset = pc - code_begin(); |
0 | 2393 int cont_offset = ImplicitExceptionTable(this).at( exception_offset ); |
2394 #ifdef ASSERT | |
2395 if (cont_offset == 0) { | |
2396 Thread* thread = ThreadLocalStorage::get_thread_slow(); | |
2397 ResetNoHandleMark rnm; // Might be called from LEAF/QUICK ENTRY | |
2398 HandleMark hm(thread); | |
2399 ResourceMark rm(thread); | |
2400 CodeBlob* cb = CodeCache::find_blob(pc); | |
2401 assert(cb != NULL && cb == this, ""); | |
2402 tty->print_cr("implicit exception happened at " INTPTR_FORMAT, pc); | |
2403 print(); | |
2404 method()->print_codes(); | |
2405 print_code(); | |
2406 print_pcs(); | |
2407 } | |
2408 #endif | |
1250 | 2409 if (cont_offset == 0) { |
2410 // Let the normal error handling report the exception | |
2411 return NULL; | |
2412 } | |
1748 | 2413 return code_begin() + cont_offset; |
0 | 2414 } |
2415 | |
2416 | |
2417 | |
2418 void nmethod_init() { | |
2419 // make sure you didn't forget to adjust the filler fields | |
2420 assert(sizeof(nmethod) % oopSize == 0, "nmethod size must be multiple of a word"); | |
2421 } | |
2422 | |
2423 | |
2424 //------------------------------------------------------------------------------------------- | |
2425 | |
2426 | |
2427 // QQQ might we make this work from a frame?? | |
2428 nmethodLocker::nmethodLocker(address pc) { | |
2429 CodeBlob* cb = CodeCache::find_blob(pc); | |
2430 guarantee(cb != NULL && cb->is_nmethod(), "bad pc for a nmethod found"); | |
2431 _nm = (nmethod*)cb; | |
2432 lock_nmethod(_nm); | |
2433 } | |
2434 | |
2342
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2435 // Only JvmtiDeferredEvent::compiled_method_unload_event() |
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2436 // should pass zombie_ok == true. |
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2437 void nmethodLocker::lock_nmethod(nmethod* nm, bool zombie_ok) { |
0 | 2438 if (nm == NULL) return; |
2439 Atomic::inc(&nm->_lock_count); | |
2342
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2440 guarantee(zombie_ok || !nm->is_zombie(), "cannot lock a zombie method"); |
0 | 2441 } |
2442 | |
2443 void nmethodLocker::unlock_nmethod(nmethod* nm) { | |
2444 if (nm == NULL) return; | |
2445 Atomic::dec(&nm->_lock_count); | |
2446 guarantee(nm->_lock_count >= 0, "unmatched nmethod lock/unlock"); | |
2447 } | |
2448 | |
1204 | 2449 |
2450 // ----------------------------------------------------------------------------- | |
2451 // nmethod::get_deopt_original_pc | |
2452 // | |
2453 // Return the original PC for the given PC if: | |
2454 // (a) the given PC belongs to a nmethod and | |
2455 // (b) it is a deopt PC | |
2456 address nmethod::get_deopt_original_pc(const frame* fr) { | |
2457 if (fr->cb() == NULL) return NULL; | |
2458 | |
2459 nmethod* nm = fr->cb()->as_nmethod_or_null(); | |
2460 if (nm != NULL && nm->is_deopt_pc(fr->pc())) | |
2461 return nm->get_original_pc(fr); | |
2462 | |
2463 return NULL; | |
0 | 2464 } |
2465 | |
2466 | |
2467 // ----------------------------------------------------------------------------- | |
1135
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2468 // MethodHandle |
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2469 |
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2470 bool nmethod::is_method_handle_return(address return_pc) { |
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2471 if (!has_method_handle_invokes()) return false; |
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2472 PcDesc* pd = pc_desc_at(return_pc); |
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2473 if (pd == NULL) |
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2474 return false; |
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2475 return pd->is_method_handle_invoke(); |
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2476 } |
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2477 |
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2478 |
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2479 // ----------------------------------------------------------------------------- |
0 | 2480 // Verification |
2481 | |
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2482 class VerifyOopsClosure: public OopClosure { |
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2483 nmethod* _nm; |
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2484 bool _ok; |
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2485 public: |
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2486 VerifyOopsClosure(nmethod* nm) : _nm(nm), _ok(true) { } |
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2487 bool ok() { return _ok; } |
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2488 virtual void do_oop(oop* p) { |
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2489 if ((*p) == NULL || (*p)->is_oop()) return; |
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2490 if (_ok) { |
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2491 _nm->print_nmethod(true); |
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2492 _ok = false; |
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2493 } |
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2494 tty->print_cr("*** non-oop "PTR_FORMAT" found at "PTR_FORMAT" (offset %d)", |
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2495 (void *)(*p), (intptr_t)p, (int)((intptr_t)p - (intptr_t)_nm)); |
989
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2496 } |
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2497 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
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2498 }; |
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2499 |
0 | 2500 void nmethod::verify() { |
2501 | |
2502 // Hmm. OSR methods can be deopted but not marked as zombie or not_entrant | |
2503 // seems odd. | |
2504 | |
2505 if( is_zombie() || is_not_entrant() ) | |
2506 return; | |
2507 | |
2508 // Make sure all the entry points are correctly aligned for patching. | |
2509 NativeJump::check_verified_entry_alignment(entry_point(), verified_entry_point()); | |
2510 | |
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2511 // assert(method()->is_oop(), "must be valid"); |
0 | 2512 |
2513 ResourceMark rm; | |
2514 | |
2515 if (!CodeCache::contains(this)) { | |
1490
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2516 fatal(err_msg("nmethod at " INTPTR_FORMAT " not in zone", this)); |
0 | 2517 } |
2518 | |
2519 if(is_native_method() ) | |
2520 return; | |
2521 | |
2522 nmethod* nm = CodeCache::find_nmethod(verified_entry_point()); | |
2523 if (nm != this) { | |
1490
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2524 fatal(err_msg("findNMethod did not find this nmethod (" INTPTR_FORMAT ")", |
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2525 this)); |
0 | 2526 } |
2527 | |
2528 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
2529 if (! p->verify(this)) { | |
2530 tty->print_cr("\t\tin nmethod at " INTPTR_FORMAT " (pcs)", this); | |
2531 } | |
2532 } | |
2533 | |
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2534 VerifyOopsClosure voc(this); |
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2535 oops_do(&voc); |
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2536 assert(voc.ok(), "embedded oops must be OK"); |
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2537 verify_scavenge_root_oops(); |
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2538 |
0 | 2539 verify_scopes(); |
2540 } | |
2541 | |
2542 | |
2543 void nmethod::verify_interrupt_point(address call_site) { | |
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|
2544 // Verify IC only when nmethod installation is finished. |
13441 | 2545 bool is_installed = (method()->code() == this) // nmethod is in state 'in_use' and installed |
2546 || !this->is_in_use(); // nmethod is installed, but not in 'in_use' state | |
13071
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2547 if (is_installed) { |
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|
2548 Thread *cur = Thread::current(); |
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2549 if (CompiledIC_lock->owner() == cur || |
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2550 ((cur->is_VM_thread() || cur->is_ConcurrentGC_thread()) && |
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2551 SafepointSynchronize::is_at_safepoint())) { |
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2552 CompiledIC_at(this, call_site); |
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2553 CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops()); |
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2554 } else { |
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2555 MutexLocker ml_verify (CompiledIC_lock); |
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2556 CompiledIC_at(this, call_site); |
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2557 } |
0 | 2558 } |
13071
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2559 |
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2560 PcDesc* pd = pc_desc_at(nativeCall_at(call_site)->return_address()); |
0 | 2561 assert(pd != NULL, "PcDesc must exist"); |
2562 for (ScopeDesc* sd = new ScopeDesc(this, pd->scope_decode_offset(), | |
9707 | 2563 pd->obj_decode_offset(), pd->should_reexecute(), pd->rethrow_exception(), |
1253
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|
2564 pd->return_oop()); |
0 | 2565 !sd->is_top(); sd = sd->sender()) { |
2566 sd->verify(); | |
2567 } | |
2568 } | |
2569 | |
2570 void nmethod::verify_scopes() { | |
2571 if( !method() ) return; // Runtime stubs have no scope | |
2572 if (method()->is_native()) return; // Ignore stub methods. | |
2573 // iterate through all interrupt point | |
2574 // and verify the debug information is valid. | |
2575 RelocIterator iter((nmethod*)this); | |
2576 while (iter.next()) { | |
2577 address stub = NULL; | |
2578 switch (iter.type()) { | |
2579 case relocInfo::virtual_call_type: | |
2580 verify_interrupt_point(iter.addr()); | |
2581 break; | |
2582 case relocInfo::opt_virtual_call_type: | |
2583 stub = iter.opt_virtual_call_reloc()->static_stub(); | |
2584 verify_interrupt_point(iter.addr()); | |
2585 break; | |
2586 case relocInfo::static_call_type: | |
2587 stub = iter.static_call_reloc()->static_stub(); | |
2588 //verify_interrupt_point(iter.addr()); | |
2589 break; | |
2590 case relocInfo::runtime_call_type: | |
2591 address destination = iter.reloc()->value(); | |
2592 // Right now there is no way to find out which entries support | |
2593 // an interrupt point. It would be nice if we had this | |
2594 // information in a table. | |
2595 break; | |
2596 } | |
2597 assert(stub == NULL || stub_contains(stub), "static call stub outside stub section"); | |
2598 } | |
2599 } | |
2600 | |
2601 | |
2602 // ----------------------------------------------------------------------------- | |
2603 // Non-product code | |
2604 #ifndef PRODUCT | |
2605 | |
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2606 class DebugScavengeRoot: public OopClosure { |
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2607 nmethod* _nm; |
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2608 bool _ok; |
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2609 public: |
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2610 DebugScavengeRoot(nmethod* nm) : _nm(nm), _ok(true) { } |
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2611 bool ok() { return _ok; } |
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2612 virtual void do_oop(oop* p) { |
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2613 if ((*p) == NULL || !(*p)->is_scavengable()) return; |
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2614 if (_ok) { |
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2615 _nm->print_nmethod(true); |
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2616 _ok = false; |
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|
2617 } |
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2618 tty->print_cr("*** scavengable oop "PTR_FORMAT" found at "PTR_FORMAT" (offset %d)", |
12316
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2619 (void *)(*p), (intptr_t)p, (int)((intptr_t)p - (intptr_t)_nm)); |
989
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2620 (*p)->print(); |
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|
2621 } |
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|
2622 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
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2623 }; |
0 | 2624 |
989
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2625 void nmethod::verify_scavenge_root_oops() { |
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2626 if (!on_scavenge_root_list()) { |
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2627 // Actually look inside, to verify the claim that it's clean. |
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2628 DebugScavengeRoot debug_scavenge_root(this); |
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2629 oops_do(&debug_scavenge_root); |
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2630 if (!debug_scavenge_root.ok()) |
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2631 fatal("found an unadvertised bad scavengable oop in the code cache"); |
0 | 2632 } |
989
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2633 assert(scavenge_root_not_marked(), ""); |
0 | 2634 } |
2635 | |
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2636 #endif // PRODUCT |
0 | 2637 |
2638 // Printing operations | |
2639 | |
2640 void nmethod::print() const { | |
2641 ResourceMark rm; | |
2642 ttyLocker ttyl; // keep the following output all in one block | |
2643 | |
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
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|
2644 tty->print("Compiled method "); |
0 | 2645 |
2646 if (is_compiled_by_c1()) { | |
2647 tty->print("(c1) "); | |
2648 } else if (is_compiled_by_c2()) { | |
2649 tty->print("(c2) "); | |
1692 | 2650 } else if (is_compiled_by_shark()) { |
2651 tty->print("(shark) "); | |
9707 | 2652 } else if (is_compiled_by_graal()) { |
2653 tty->print("(Graal) "); | |
0 | 2654 } else { |
2655 tty->print("(nm) "); | |
2656 } | |
2657 | |
2405
3d58a4983660
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diff
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|
2658 print_on(tty, NULL); |
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|
2659 |
0 | 2660 if (WizardMode) { |
2661 tty->print("((nmethod*) "INTPTR_FORMAT ") ", this); | |
2662 tty->print(" for method " INTPTR_FORMAT , (address)method()); | |
2663 tty->print(" { "); | |
2664 if (is_in_use()) tty->print("in_use "); | |
2665 if (is_not_entrant()) tty->print("not_entrant "); | |
2666 if (is_zombie()) tty->print("zombie "); | |
2667 if (is_unloaded()) tty->print("unloaded "); | |
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2668 if (on_scavenge_root_list()) tty->print("scavenge_root "); |
0 | 2669 tty->print_cr("}:"); |
2670 } | |
2671 if (size () > 0) tty->print_cr(" total in heap [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2672 (address)this, | |
2673 (address)this + size(), | |
2674 size()); | |
2675 if (relocation_size () > 0) tty->print_cr(" relocation [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2676 relocation_begin(), | |
2677 relocation_end(), | |
2678 relocation_size()); | |
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0878d7bae69f
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diff
changeset
|
2679 if (consts_size () > 0) tty->print_cr(" constants [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
0878d7bae69f
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1748
diff
changeset
|
2680 consts_begin(), |
0878d7bae69f
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diff
changeset
|
2681 consts_end(), |
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diff
changeset
|
2682 consts_size()); |
1748 | 2683 if (insts_size () > 0) tty->print_cr(" main code [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
2684 insts_begin(), | |
2685 insts_end(), | |
2686 insts_size()); | |
0 | 2687 if (stub_size () > 0) tty->print_cr(" stub code [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
2688 stub_begin(), | |
2689 stub_end(), | |
2690 stub_size()); | |
1563
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
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1538
diff
changeset
|
2691 if (oops_size () > 0) tty->print_cr(" oops [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
1a5913bf5e19
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diff
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|
2692 oops_begin(), |
1a5913bf5e19
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diff
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|
2693 oops_end(), |
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|
2694 oops_size()); |
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2695 if (metadata_size () > 0) tty->print_cr(" metadata [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
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|
2696 metadata_begin(), |
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|
2697 metadata_end(), |
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2698 metadata_size()); |
0 | 2699 if (scopes_data_size () > 0) tty->print_cr(" scopes data [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
2700 scopes_data_begin(), | |
2701 scopes_data_end(), | |
2702 scopes_data_size()); | |
2703 if (scopes_pcs_size () > 0) tty->print_cr(" scopes pcs [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2704 scopes_pcs_begin(), | |
2705 scopes_pcs_end(), | |
2706 scopes_pcs_size()); | |
2707 if (dependencies_size () > 0) tty->print_cr(" dependencies [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2708 dependencies_begin(), | |
2709 dependencies_end(), | |
2710 dependencies_size()); | |
2711 if (handler_table_size() > 0) tty->print_cr(" handler table [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2712 handler_table_begin(), | |
2713 handler_table_end(), | |
2714 handler_table_size()); | |
2715 if (nul_chk_table_size() > 0) tty->print_cr(" nul chk table [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2716 nul_chk_table_begin(), | |
2717 nul_chk_table_end(), | |
2718 nul_chk_table_size()); | |
2719 } | |
2720 | |
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2721 void nmethod::print_code() { |
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|
2722 HandleMark hm; |
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|
2723 ResourceMark m; |
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diff
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|
2724 Disassembler::decode(this); |
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|
2725 } |
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|
2726 |
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2727 |
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|
2728 #ifndef PRODUCT |
0 | 2729 |
2730 void nmethod::print_scopes() { | |
2731 // Find the first pc desc for all scopes in the code and print it. | |
2732 ResourceMark rm; | |
2733 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
2734 if (p->scope_decode_offset() == DebugInformationRecorder::serialized_null) | |
2735 continue; | |
2736 | |
2737 ScopeDesc* sd = scope_desc_at(p->real_pc(this)); | |
2738 sd->print_on(tty, p); | |
2739 } | |
2740 } | |
2741 | |
2742 void nmethod::print_dependencies() { | |
2743 ResourceMark rm; | |
2744 ttyLocker ttyl; // keep the following output all in one block | |
2745 tty->print_cr("Dependencies:"); | |
2746 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
2747 deps.print_dependency(); | |
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2748 Klass* ctxk = deps.context_type(); |
0 | 2749 if (ctxk != NULL) { |
6983 | 2750 if (ctxk->oop_is_instance() && ((InstanceKlass*)ctxk)->is_dependent_nmethod(this)) { |
2751 tty->print_cr(" [nmethod<=klass]%s", ctxk->external_name()); | |
0 | 2752 } |
2753 } | |
2754 deps.log_dependency(); // put it into the xml log also | |
2755 } | |
2756 } | |
2757 | |
2758 | |
2759 void nmethod::print_relocations() { | |
2760 ResourceMark m; // in case methods get printed via the debugger | |
2761 tty->print_cr("relocations:"); | |
2762 RelocIterator iter(this); | |
2763 iter.print(); | |
2764 if (UseRelocIndex) { | |
2765 jint* index_end = (jint*)relocation_end() - 1; | |
2766 jint index_size = *index_end; | |
2767 jint* index_start = (jint*)( (address)index_end - index_size ); | |
2768 tty->print_cr(" index @" INTPTR_FORMAT ": index_size=%d", index_start, index_size); | |
2769 if (index_size > 0) { | |
2770 jint* ip; | |
2771 for (ip = index_start; ip+2 <= index_end; ip += 2) | |
2772 tty->print_cr(" (%d %d) addr=" INTPTR_FORMAT " @" INTPTR_FORMAT, | |
2773 ip[0], | |
2774 ip[1], | |
2775 header_end()+ip[0], | |
2776 relocation_begin()-1+ip[1]); | |
2777 for (; ip < index_end; ip++) | |
2778 tty->print_cr(" (%d ?)", ip[0]); | |
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|
2779 tty->print_cr(" @" INTPTR_FORMAT ": index_size=%d", ip, *ip); |
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|
2780 ip++; |
0 | 2781 tty->print_cr("reloc_end @" INTPTR_FORMAT ":", ip); |
2782 } | |
2783 } | |
2784 } | |
2785 | |
2786 | |
2787 void nmethod::print_pcs() { | |
2788 ResourceMark m; // in case methods get printed via debugger | |
2789 tty->print_cr("pc-bytecode offsets:"); | |
2790 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
2791 p->print(this); | |
2792 } | |
2793 } | |
2794 | |
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2795 #endif // PRODUCT |
0 | 2796 |
2797 const char* nmethod::reloc_string_for(u_char* begin, u_char* end) { | |
2798 RelocIterator iter(this, begin, end); | |
2799 bool have_one = false; | |
2800 while (iter.next()) { | |
2801 have_one = true; | |
2802 switch (iter.type()) { | |
2803 case relocInfo::none: return "no_reloc"; | |
2804 case relocInfo::oop_type: { | |
2805 stringStream st; | |
2806 oop_Relocation* r = iter.oop_reloc(); | |
2807 oop obj = r->oop_value(); | |
2808 st.print("oop("); | |
2809 if (obj == NULL) st.print("NULL"); | |
2810 else obj->print_value_on(&st); | |
2811 st.print(")"); | |
2812 return st.as_string(); | |
2813 } | |
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2814 case relocInfo::metadata_type: { |
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2815 stringStream st; |
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2816 metadata_Relocation* r = iter.metadata_reloc(); |
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changeset
|
2817 Metadata* obj = r->metadata_value(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2818 st.print("metadata("); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2819 if (obj == NULL) st.print("NULL"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2820 else obj->print_value_on(&st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2821 st.print(")"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2822 return st.as_string(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2823 } |
0 | 2824 case relocInfo::virtual_call_type: return "virtual_call"; |
2825 case relocInfo::opt_virtual_call_type: return "optimized virtual_call"; | |
2826 case relocInfo::static_call_type: return "static_call"; | |
2827 case relocInfo::static_stub_type: return "static_stub"; | |
2828 case relocInfo::runtime_call_type: return "runtime_call"; | |
2829 case relocInfo::external_word_type: return "external_word"; | |
2830 case relocInfo::internal_word_type: return "internal_word"; | |
2831 case relocInfo::section_word_type: return "section_word"; | |
2832 case relocInfo::poll_type: return "poll"; | |
2833 case relocInfo::poll_return_type: return "poll_return"; | |
2834 case relocInfo::type_mask: return "type_bit_mask"; | |
2835 } | |
2836 } | |
2837 return have_one ? "other" : NULL; | |
2838 } | |
2839 | |
2840 // Return a the last scope in (begin..end] | |
2841 ScopeDesc* nmethod::scope_desc_in(address begin, address end) { | |
2842 PcDesc* p = pc_desc_near(begin+1); | |
2843 if (p != NULL && p->real_pc(this) <= end) { | |
2844 return new ScopeDesc(this, p->scope_decode_offset(), | |
9707 | 2845 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
|
2846 p->return_oop()); |
0 | 2847 } |
2848 return NULL; | |
2849 } | |
2850 | |
6796
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
parents:
6792
diff
changeset
|
2851 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
|
2852 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
|
2853 if (block_begin == verified_entry_point()) stream->print_cr("[Verified Entry Point]"); |
9707 | 2854 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
|
2855 if (block_begin == stub_begin()) stream->print_cr("[Stub Code]"); |
9707 | 2856 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
|
2857 |
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
twisti
parents:
1644
diff
changeset
|
2858 if (has_method_handle_invokes()) |
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
twisti
parents:
1644
diff
changeset
|
2859 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
|
2860 |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2861 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
|
2862 |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2863 if (block_begin == entry_point()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2864 methodHandle m = method(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2865 if (m.not_null()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2866 stream->print(" # "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2867 m->print_value_on(stream); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2868 stream->cr(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2869 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2870 if (m.not_null() && !is_osr_method()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2871 ResourceMark rm; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2872 int sizeargs = m->size_of_parameters(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2873 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
|
2874 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, sizeargs); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2875 { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2876 int sig_index = 0; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2877 if (!m->is_static()) |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2878 sig_bt[sig_index++] = T_OBJECT; // 'this' |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2879 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
|
2880 BasicType t = ss.type(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2881 sig_bt[sig_index++] = t; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2882 if (type2size[t] == 2) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2883 sig_bt[sig_index++] = T_VOID; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2884 } else { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2885 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
|
2886 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2887 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2888 assert(sig_index == sizeargs, ""); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2889 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2890 const char* spname = "sp"; // make arch-specific? |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2891 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
|
2892 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
|
2893 int tab1 = 14, tab2 = 24; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2894 int sig_index = 0; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2895 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
|
2896 bool did_old_sp = false; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2897 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
|
2898 bool at_this = (arg_index == -1); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2899 bool at_old_sp = false; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2900 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
|
2901 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
|
2902 if (at_this) |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2903 stream->print(" # this: "); |
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 stream->print(" # parm%d: ", arg_index); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2906 stream->move_to(tab1); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2907 VMReg fst = regs[sig_index].first(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2908 VMReg snd = regs[sig_index].second(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2909 if (fst->is_reg()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2910 stream->print("%s", fst->name()); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2911 if (snd->is_valid()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2912 stream->print(":%s", snd->name()); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2913 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2914 } else if (fst->is_stack()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2915 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
|
2916 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
|
2917 stream->print("[%s+0x%x]", spname, offset); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2918 } else { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2919 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
|
2920 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2921 stream->print(" "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2922 stream->move_to(tab2); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2923 stream->print("= "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2924 if (at_this) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2925 m->method_holder()->print_value_on(stream); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2926 } else { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2927 bool did_name = false; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2928 if (!at_this && ss.is_object()) { |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2142
diff
changeset
|
2929 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
|
2930 if (name != NULL) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2931 name->print_value_on(stream); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2932 did_name = true; |
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 if (!did_name) |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2936 stream->print("%s", type2name(t)); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2937 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2938 if (at_old_sp) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2939 stream->print(" (%s of caller)", spname); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2940 did_old_sp = true; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2941 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2942 stream->cr(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2943 sig_index += type2size[t]; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2944 arg_index += 1; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2945 if (!at_this) ss.next(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2946 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2947 if (!did_old_sp) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2948 stream->print(" # "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2949 stream->move_to(tab1); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2950 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
|
2951 stream->print(" (%s of caller)", spname); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2952 stream->cr(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2953 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2954 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2955 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2956 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2957 |
0 | 2958 void nmethod::print_code_comment_on(outputStream* st, int column, u_char* begin, u_char* end) { |
2959 // First, find an oopmap in (begin, end]. | |
2960 // We use the odd half-closed interval so that oop maps and scope descs | |
2961 // which are tied to the byte after a call are printed with the call itself. | |
1748 | 2962 address base = code_begin(); |
0 | 2963 OopMapSet* oms = oop_maps(); |
2964 if (oms != NULL) { | |
2965 for (int i = 0, imax = oms->size(); i < imax; i++) { | |
2966 OopMap* om = oms->at(i); | |
2967 address pc = base + om->offset(); | |
2968 if (pc > begin) { | |
2969 if (pc <= end) { | |
100
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30
diff
changeset
|
2970 st->move_to(column); |
c7c777385a15
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diff
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2971 st->print("; "); |
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6667042: PrintAssembly option does not work without special plugin
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diff
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|
2972 om->print_on(st); |
0 | 2973 } |
2974 break; | |
2975 } | |
2976 } | |
2977 } | |
100
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2978 |
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2979 // Print any debug info present at this pc. |
0 | 2980 ScopeDesc* sd = scope_desc_in(begin, end); |
2981 if (sd != NULL) { | |
100
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2982 st->move_to(column); |
0 | 2983 if (sd->bci() == SynchronizationEntryBCI) { |
2984 st->print(";*synchronization entry"); | |
2985 } else { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2986 if (sd->method() == NULL) { |
100
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2987 st->print("method is NULL"); |
0 | 2988 } else if (sd->method()->is_native()) { |
100
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2989 st->print("method is native"); |
0 | 2990 } else { |
2142 | 2991 Bytecodes::Code bc = sd->method()->java_code_at(sd->bci()); |
0 | 2992 st->print(";*%s", Bytecodes::name(bc)); |
2993 switch (bc) { | |
2994 case Bytecodes::_invokevirtual: | |
2995 case Bytecodes::_invokespecial: | |
2996 case Bytecodes::_invokestatic: | |
2997 case Bytecodes::_invokeinterface: | |
2998 { | |
2142 | 2999 Bytecode_invoke invoke(sd->method(), sd->bci()); |
0 | 3000 st->print(" "); |
2142 | 3001 if (invoke.name() != NULL) |
3002 invoke.name()->print_symbol_on(st); | |
0 | 3003 else |
3004 st->print("<UNKNOWN>"); | |
3005 break; | |
3006 } | |
3007 case Bytecodes::_getfield: | |
3008 case Bytecodes::_putfield: | |
3009 case Bytecodes::_getstatic: | |
3010 case Bytecodes::_putstatic: | |
3011 { | |
2142 | 3012 Bytecode_field field(sd->method(), sd->bci()); |
0 | 3013 st->print(" "); |
2142 | 3014 if (field.name() != NULL) |
3015 field.name()->print_symbol_on(st); | |
0 | 3016 else |
3017 st->print("<UNKNOWN>"); | |
3018 } | |
3019 } | |
3020 } | |
3021 } | |
100
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3022 |
0 | 3023 // Print all scopes |
3024 for (;sd != NULL; sd = sd->sender()) { | |
100
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diff
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3025 st->move_to(column); |
0 | 3026 st->print("; -"); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3027 if (sd->method() == NULL) { |
100
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diff
changeset
|
3028 st->print("method is NULL"); |
0 | 3029 } else { |
3030 sd->method()->print_short_name(st); | |
3031 } | |
3032 int lineno = sd->method()->line_number_from_bci(sd->bci()); | |
3033 if (lineno != -1) { | |
3034 st->print("@%d (line %d)", sd->bci(), lineno); | |
3035 } else { | |
3036 st->print("@%d", sd->bci()); | |
3037 } | |
3038 st->cr(); | |
3039 } | |
3040 } | |
3041 | |
3042 // Print relocation information | |
3043 const char* str = reloc_string_for(begin, end); | |
3044 if (str != NULL) { | |
3045 if (sd != NULL) st->cr(); | |
100
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diff
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|
3046 st->move_to(column); |
0 | 3047 st->print("; {%s}", str); |
3048 } | |
1748 | 3049 int cont_offset = ImplicitExceptionTable(this).at(begin - code_begin()); |
0 | 3050 if (cont_offset != 0) { |
100
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diff
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|
3051 st->move_to(column); |
1748 | 3052 st->print("; implicit exception: dispatches to " INTPTR_FORMAT, code_begin() + cont_offset); |
0 | 3053 } |
3054 | |
3055 } | |
3056 | |
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|
3057 #ifndef PRODUCT |
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3058 |
0 | 3059 void nmethod::print_value_on(outputStream* st) const { |
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
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2376
diff
changeset
|
3060 st->print("nmethod"); |
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
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diff
changeset
|
3061 print_on(st, NULL); |
0 | 3062 } |
3063 | |
3064 void nmethod::print_calls(outputStream* st) { | |
3065 RelocIterator iter(this); | |
3066 while (iter.next()) { | |
3067 switch (iter.type()) { | |
3068 case relocInfo::virtual_call_type: | |
3069 case relocInfo::opt_virtual_call_type: { | |
3070 VerifyMutexLocker mc(CompiledIC_lock); | |
3071 CompiledIC_at(iter.reloc())->print(); | |
3072 break; | |
3073 } | |
3074 case relocInfo::static_call_type: | |
3075 st->print_cr("Static call at " INTPTR_FORMAT, iter.reloc()->addr()); | |
3076 compiledStaticCall_at(iter.reloc())->print(); | |
3077 break; | |
3078 } | |
3079 } | |
3080 } | |
3081 | |
3082 void nmethod::print_handler_table() { | |
3083 ExceptionHandlerTable(this).print(); | |
3084 } | |
3085 | |
3086 void nmethod::print_nul_chk_table() { | |
1748 | 3087 ImplicitExceptionTable(this).print(code_begin()); |
0 | 3088 } |
14733
b10e42998d01
nmethod: fix -XX:+PrintNMethodStatistics
Bernhard Urban <bernhard.urban@jku.at>
parents:
14726
diff
changeset
|
3089 #endif // PRODUCT |
0 | 3090 |
3091 void nmethod::print_statistics() { | |
3092 ttyLocker ttyl; | |
3093 if (xtty != NULL) xtty->head("statistics type='nmethod'"); | |
12675
7fedc59e2cdc
Split code cache stats for the different compilers
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12414
diff
changeset
|
3094 native_nmethod_stats.print_native_nmethod_stats(); |
7fedc59e2cdc
Split code cache stats for the different compilers
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12414
diff
changeset
|
3095 #ifdef COMPILER1 |
7fedc59e2cdc
Split code cache stats for the different compilers
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12414
diff
changeset
|
3096 c1_java_nmethod_stats.print_nmethod_stats("C1"); |
7fedc59e2cdc
Split code cache stats for the different compilers
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12414
diff
changeset
|
3097 #endif |
7fedc59e2cdc
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Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12414
diff
changeset
|
3098 #ifdef COMPILER2 |
7fedc59e2cdc
Split code cache stats for the different compilers
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12414
diff
changeset
|
3099 c2_java_nmethod_stats.print_nmethod_stats("C2"); |
7fedc59e2cdc
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Gilles Duboscq <duboscq@ssw.jku.at>
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12414
diff
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|
3100 #endif |
7fedc59e2cdc
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Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12414
diff
changeset
|
3101 #ifdef GRAAL |
7fedc59e2cdc
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Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12414
diff
changeset
|
3102 graal_java_nmethod_stats.print_nmethod_stats("Graal"); |
7fedc59e2cdc
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Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12414
diff
changeset
|
3103 #endif |
15434
7461c3bf278a
Improve PrintNMethodStatistics output: add Shark compiler and metadata size. Properly record nmethods for native wrapper.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
15164
diff
changeset
|
3104 #ifdef SHARK |
7461c3bf278a
Improve PrintNMethodStatistics output: add Shark compiler and metadata size. Properly record nmethods for native wrapper.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
15164
diff
changeset
|
3105 shark_java_nmethod_stats.print_nmethod_stats("Shark"); |
7461c3bf278a
Improve PrintNMethodStatistics output: add Shark compiler and metadata size. Properly record nmethods for native wrapper.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
15164
diff
changeset
|
3106 #endif |
12758
ca33948fb804
nmethod.cpp: s/unknwon/unknown/
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12704
diff
changeset
|
3107 unknown_java_nmethod_stats.print_nmethod_stats("Unknown"); |
0 | 3108 DebugInformationRecorder::print_statistics(); |
15434
7461c3bf278a
Improve PrintNMethodStatistics output: add Shark compiler and metadata size. Properly record nmethods for native wrapper.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
15164
diff
changeset
|
3109 #ifndef PRODUCT |
12675
7fedc59e2cdc
Split code cache stats for the different compilers
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12414
diff
changeset
|
3110 pc_nmethod_stats.print_pc_stats(); |
15434
7461c3bf278a
Improve PrintNMethodStatistics output: add Shark compiler and metadata size. Properly record nmethods for native wrapper.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
15164
diff
changeset
|
3111 #endif |
0 | 3112 Dependencies::print_statistics(); |
3113 if (xtty != NULL) xtty->tail("statistics"); | |
3114 } |