Mercurial > hg > truffle
annotate src/share/vm/code/nmethod.cpp @ 12481:45daf0d65522
Replace EliminatePartiallyRedundantGuardsPhase with OptimizeGuardAnchors
* OptimizeGuardAnchors implements optimization at control split in a more efficient way
* OptimizeGuardAnchors ensure Guards have their optimal anchor point
***
OptimizeGuardAnchors header
author | Gilles Duboscq <duboscq@ssw.jku.at> |
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date | Thu, 17 Oct 2013 18:18:05 +0200 |
parents | 98031e66de15 |
children | 7fedc59e2cdc |
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 | |
4006 | 56 #ifndef USDT2 |
0 | 57 HS_DTRACE_PROBE_DECL8(hotspot, compiled__method__load, |
58 const char*, int, const char*, int, const char*, int, void*, size_t); | |
59 | |
60 HS_DTRACE_PROBE_DECL6(hotspot, compiled__method__unload, | |
61 char*, int, char*, int, char*, int); | |
62 | |
63 #define DTRACE_METHOD_UNLOAD_PROBE(method) \ | |
64 { \ | |
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65 Method* m = (method); \ |
0 | 66 if (m != NULL) { \ |
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67 Symbol* klass_name = m->klass_name(); \ |
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68 Symbol* name = m->name(); \ |
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69 Symbol* signature = m->signature(); \ |
0 | 70 HS_DTRACE_PROBE6(hotspot, compiled__method__unload, \ |
71 klass_name->bytes(), klass_name->utf8_length(), \ | |
72 name->bytes(), name->utf8_length(), \ | |
73 signature->bytes(), signature->utf8_length()); \ | |
74 } \ | |
75 } | |
4006 | 76 #else /* USDT2 */ |
77 #define DTRACE_METHOD_UNLOAD_PROBE(method) \ | |
78 { \ | |
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79 Method* m = (method); \ |
4006 | 80 if (m != NULL) { \ |
81 Symbol* klass_name = m->klass_name(); \ | |
82 Symbol* name = m->name(); \ | |
83 Symbol* signature = m->signature(); \ | |
84 HOTSPOT_COMPILED_METHOD_UNLOAD( \ | |
85 (char *) klass_name->bytes(), klass_name->utf8_length(), \ | |
86 (char *) name->bytes(), name->utf8_length(), \ | |
87 (char *) signature->bytes(), signature->utf8_length()); \ | |
88 } \ | |
89 } | |
90 #endif /* USDT2 */ | |
0 | 91 |
92 #else // ndef DTRACE_ENABLED | |
93 | |
94 #define DTRACE_METHOD_UNLOAD_PROBE(method) | |
95 | |
96 #endif | |
97 | |
98 bool nmethod::is_compiled_by_c1() const { | |
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99 if (compiler() == NULL) { |
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100 return false; |
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101 } |
0 | 102 return compiler()->is_c1(); |
103 } | |
9707 | 104 bool nmethod::is_compiled_by_graal() const { |
105 if (compiler() == NULL || method() == NULL) return false; // can happen during debug printing | |
106 if (is_native_method()) return false; | |
107 return compiler()->is_graal(); | |
108 } | |
0 | 109 bool nmethod::is_compiled_by_c2() const { |
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110 if (compiler() == NULL) { |
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111 return false; |
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112 } |
0 | 113 return compiler()->is_c2(); |
114 } | |
1692 | 115 bool nmethod::is_compiled_by_shark() const { |
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116 if (compiler() == NULL) { |
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117 return false; |
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118 } |
1692 | 119 return compiler()->is_shark(); |
120 } | |
0 | 121 |
122 | |
123 | |
124 //--------------------------------------------------------------------------------- | |
125 // NMethod statistics | |
126 // They are printed under various flags, including: | |
127 // PrintC1Statistics, PrintOptoStatistics, LogVMOutput, and LogCompilation. | |
128 // (In the latter two cases, they like other stats are printed to the log only.) | |
129 | |
130 // These variables are put into one block to reduce relocations | |
131 // and make it simpler to print from the debugger. | |
132 static | |
133 struct nmethod_stats_struct { | |
134 int nmethod_count; | |
135 int total_size; | |
136 int relocation_size; | |
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137 int consts_size; |
1748 | 138 int insts_size; |
0 | 139 int stub_size; |
140 int scopes_data_size; | |
141 int scopes_pcs_size; | |
142 int dependencies_size; | |
143 int handler_table_size; | |
144 int nul_chk_table_size; | |
145 int oops_size; | |
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(); |
0 | 155 scopes_data_size += nm->scopes_data_size(); |
156 scopes_pcs_size += nm->scopes_pcs_size(); | |
157 dependencies_size += nm->dependencies_size(); | |
158 handler_table_size += nm->handler_table_size(); | |
159 nul_chk_table_size += nm->nul_chk_table_size(); | |
160 } | |
161 void print_nmethod_stats() { | |
162 if (nmethod_count == 0) return; | |
163 tty->print_cr("Statistics for %d bytecoded nmethods:", nmethod_count); | |
164 if (total_size != 0) tty->print_cr(" total in heap = %d", total_size); | |
165 if (relocation_size != 0) tty->print_cr(" relocation = %d", relocation_size); | |
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166 if (consts_size != 0) tty->print_cr(" constants = %d", consts_size); |
1748 | 167 if (insts_size != 0) tty->print_cr(" main code = %d", insts_size); |
0 | 168 if (stub_size != 0) tty->print_cr(" stub code = %d", stub_size); |
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169 if (oops_size != 0) tty->print_cr(" oops = %d", oops_size); |
0 | 170 if (scopes_data_size != 0) tty->print_cr(" scopes data = %d", scopes_data_size); |
171 if (scopes_pcs_size != 0) tty->print_cr(" scopes pcs = %d", scopes_pcs_size); | |
172 if (dependencies_size != 0) tty->print_cr(" dependencies = %d", dependencies_size); | |
173 if (handler_table_size != 0) tty->print_cr(" handler table = %d", handler_table_size); | |
174 if (nul_chk_table_size != 0) tty->print_cr(" nul chk table = %d", nul_chk_table_size); | |
175 } | |
176 | |
177 int native_nmethod_count; | |
178 int native_total_size; | |
179 int native_relocation_size; | |
1748 | 180 int native_insts_size; |
0 | 181 int native_oops_size; |
182 void note_native_nmethod(nmethod* nm) { | |
183 native_nmethod_count += 1; | |
184 native_total_size += nm->size(); | |
185 native_relocation_size += nm->relocation_size(); | |
1748 | 186 native_insts_size += nm->insts_size(); |
0 | 187 native_oops_size += nm->oops_size(); |
188 } | |
189 void print_native_nmethod_stats() { | |
190 if (native_nmethod_count == 0) return; | |
191 tty->print_cr("Statistics for %d native nmethods:", native_nmethod_count); | |
192 if (native_total_size != 0) tty->print_cr(" N. total size = %d", native_total_size); | |
193 if (native_relocation_size != 0) tty->print_cr(" N. relocation = %d", native_relocation_size); | |
1748 | 194 if (native_insts_size != 0) tty->print_cr(" N. main code = %d", native_insts_size); |
0 | 195 if (native_oops_size != 0) tty->print_cr(" N. oops = %d", native_oops_size); |
196 } | |
197 | |
198 int pc_desc_resets; // number of resets (= number of caches) | |
199 int pc_desc_queries; // queries to nmethod::find_pc_desc | |
200 int pc_desc_approx; // number of those which have approximate true | |
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201 int pc_desc_repeats; // number of _pc_descs[0] hits |
0 | 202 int pc_desc_hits; // number of LRU cache hits |
203 int pc_desc_tests; // total number of PcDesc examinations | |
204 int pc_desc_searches; // total number of quasi-binary search steps | |
205 int pc_desc_adds; // number of LUR cache insertions | |
206 | |
207 void print_pc_stats() { | |
208 tty->print_cr("PcDesc Statistics: %d queries, %.2f comparisons per query", | |
209 pc_desc_queries, | |
210 (double)(pc_desc_tests + pc_desc_searches) | |
211 / pc_desc_queries); | |
212 tty->print_cr(" caches=%d queries=%d/%d, hits=%d+%d, tests=%d+%d, adds=%d", | |
213 pc_desc_resets, | |
214 pc_desc_queries, pc_desc_approx, | |
215 pc_desc_repeats, pc_desc_hits, | |
216 pc_desc_tests, pc_desc_searches, pc_desc_adds); | |
217 } | |
218 } nmethod_stats; | |
219 | |
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220 |
0 | 221 //--------------------------------------------------------------------------------- |
222 | |
223 | |
224 ExceptionCache::ExceptionCache(Handle exception, address pc, address handler) { | |
225 assert(pc != NULL, "Must be non null"); | |
226 assert(exception.not_null(), "Must be non null"); | |
227 assert(handler != NULL, "Must be non null"); | |
228 | |
229 _count = 0; | |
230 _exception_type = exception->klass(); | |
231 _next = NULL; | |
232 | |
233 add_address_and_handler(pc,handler); | |
234 } | |
235 | |
236 | |
237 address ExceptionCache::match(Handle exception, address pc) { | |
238 assert(pc != NULL,"Must be non null"); | |
239 assert(exception.not_null(),"Must be non null"); | |
240 if (exception->klass() == exception_type()) { | |
241 return (test_address(pc)); | |
242 } | |
243 | |
244 return NULL; | |
245 } | |
246 | |
247 | |
248 bool ExceptionCache::match_exception_with_space(Handle exception) { | |
249 assert(exception.not_null(),"Must be non null"); | |
250 if (exception->klass() == exception_type() && count() < cache_size) { | |
251 return true; | |
252 } | |
253 return false; | |
254 } | |
255 | |
256 | |
257 address ExceptionCache::test_address(address addr) { | |
258 for (int i=0; i<count(); i++) { | |
259 if (pc_at(i) == addr) { | |
260 return handler_at(i); | |
261 } | |
262 } | |
263 return NULL; | |
264 } | |
265 | |
266 | |
267 bool ExceptionCache::add_address_and_handler(address addr, address handler) { | |
268 if (test_address(addr) == handler) return true; | |
269 if (count() < cache_size) { | |
270 set_pc_at(count(),addr); | |
271 set_handler_at(count(), handler); | |
272 increment_count(); | |
273 return true; | |
274 } | |
275 return false; | |
276 } | |
277 | |
278 | |
279 // private method for handling exception cache | |
280 // These methods are private, and used to manipulate the exception cache | |
281 // directly. | |
282 ExceptionCache* nmethod::exception_cache_entry_for_exception(Handle exception) { | |
283 ExceptionCache* ec = exception_cache(); | |
284 while (ec != NULL) { | |
285 if (ec->match_exception_with_space(exception)) { | |
286 return ec; | |
287 } | |
288 ec = ec->next(); | |
289 } | |
290 return NULL; | |
291 } | |
292 | |
293 | |
294 //----------------------------------------------------------------------------- | |
295 | |
296 | |
297 // Helper used by both find_pc_desc methods. | |
298 static inline bool match_desc(PcDesc* pc, int pc_offset, bool approximate) { | |
299 NOT_PRODUCT(++nmethod_stats.pc_desc_tests); | |
300 if (!approximate) | |
301 return pc->pc_offset() == pc_offset; | |
302 else | |
303 return (pc-1)->pc_offset() < pc_offset && pc_offset <= pc->pc_offset(); | |
304 } | |
305 | |
306 void PcDescCache::reset_to(PcDesc* initial_pc_desc) { | |
307 if (initial_pc_desc == NULL) { | |
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308 _pc_descs[0] = NULL; // native method; no PcDescs at all |
0 | 309 return; |
310 } | |
311 NOT_PRODUCT(++nmethod_stats.pc_desc_resets); | |
312 // reset the cache by filling it with benign (non-null) values | |
313 assert(initial_pc_desc->pc_offset() < 0, "must be sentinel"); | |
314 for (int i = 0; i < cache_size; i++) | |
315 _pc_descs[i] = initial_pc_desc; | |
316 } | |
317 | |
318 PcDesc* PcDescCache::find_pc_desc(int pc_offset, bool approximate) { | |
319 NOT_PRODUCT(++nmethod_stats.pc_desc_queries); | |
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320 NOT_PRODUCT(if (approximate) ++nmethod_stats.pc_desc_approx); |
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321 |
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322 // Note: one might think that caching the most recently |
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323 // read value separately would be a win, but one would be |
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324 // wrong. When many threads are updating it, the cache |
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325 // line it's in would bounce between caches, negating |
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326 // any benefit. |
0 | 327 |
328 // In order to prevent race conditions do not load cache elements | |
329 // repeatedly, but use a local copy: | |
330 PcDesc* res; | |
331 | |
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332 // Step one: Check the most recently added value. |
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333 res = _pc_descs[0]; |
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334 if (res == NULL) return NULL; // native method; no PcDescs at all |
0 | 335 if (match_desc(res, pc_offset, approximate)) { |
336 NOT_PRODUCT(++nmethod_stats.pc_desc_repeats); | |
337 return res; | |
338 } | |
339 | |
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340 // Step two: Check the rest of the LRU cache. |
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341 for (int i = 1; i < cache_size; ++i) { |
0 | 342 res = _pc_descs[i]; |
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343 if (res->pc_offset() < 0) break; // optimization: skip empty cache |
0 | 344 if (match_desc(res, pc_offset, approximate)) { |
345 NOT_PRODUCT(++nmethod_stats.pc_desc_hits); | |
346 return res; | |
347 } | |
348 } | |
349 | |
350 // Report failure. | |
351 return NULL; | |
352 } | |
353 | |
354 void PcDescCache::add_pc_desc(PcDesc* pc_desc) { | |
355 NOT_PRODUCT(++nmethod_stats.pc_desc_adds); | |
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356 // Update the LRU cache by shifting pc_desc forward. |
0 | 357 for (int i = 0; i < cache_size; i++) { |
358 PcDesc* next = _pc_descs[i]; | |
359 _pc_descs[i] = pc_desc; | |
360 pc_desc = next; | |
361 } | |
362 } | |
363 | |
364 // adjust pcs_size so that it is a multiple of both oopSize and | |
365 // sizeof(PcDesc) (assumes that if sizeof(PcDesc) is not a multiple | |
366 // of oopSize, then 2*sizeof(PcDesc) is) | |
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367 static int adjust_pcs_size(int pcs_size) { |
0 | 368 int nsize = round_to(pcs_size, oopSize); |
369 if ((nsize % sizeof(PcDesc)) != 0) { | |
370 nsize = pcs_size + sizeof(PcDesc); | |
371 } | |
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372 assert((nsize % oopSize) == 0, "correct alignment"); |
0 | 373 return nsize; |
374 } | |
375 | |
376 //----------------------------------------------------------------------------- | |
377 | |
378 | |
379 void nmethod::add_exception_cache_entry(ExceptionCache* new_entry) { | |
380 assert(ExceptionCache_lock->owned_by_self(),"Must hold the ExceptionCache_lock"); | |
381 assert(new_entry != NULL,"Must be non null"); | |
382 assert(new_entry->next() == NULL, "Must be null"); | |
383 | |
384 if (exception_cache() != NULL) { | |
385 new_entry->set_next(exception_cache()); | |
386 } | |
387 set_exception_cache(new_entry); | |
388 } | |
389 | |
390 void nmethod::remove_from_exception_cache(ExceptionCache* ec) { | |
391 ExceptionCache* prev = NULL; | |
392 ExceptionCache* curr = exception_cache(); | |
393 assert(curr != NULL, "nothing to remove"); | |
394 // find the previous and next entry of ec | |
395 while (curr != ec) { | |
396 prev = curr; | |
397 curr = curr->next(); | |
398 assert(curr != NULL, "ExceptionCache not found"); | |
399 } | |
400 // now: curr == ec | |
401 ExceptionCache* next = curr->next(); | |
402 if (prev == NULL) { | |
403 set_exception_cache(next); | |
404 } else { | |
405 prev->set_next(next); | |
406 } | |
407 delete curr; | |
408 } | |
409 | |
410 | |
411 // public method for accessing the exception cache | |
412 // These are the public access methods. | |
413 address nmethod::handler_for_exception_and_pc(Handle exception, address pc) { | |
414 // We never grab a lock to read the exception cache, so we may | |
415 // have false negatives. This is okay, as it can only happen during | |
416 // the first few exception lookups for a given nmethod. | |
417 ExceptionCache* ec = exception_cache(); | |
418 while (ec != NULL) { | |
419 address ret_val; | |
420 if ((ret_val = ec->match(exception,pc)) != NULL) { | |
421 return ret_val; | |
422 } | |
423 ec = ec->next(); | |
424 } | |
425 return NULL; | |
426 } | |
427 | |
428 | |
429 void nmethod::add_handler_for_exception_and_pc(Handle exception, address pc, address handler) { | |
430 // There are potential race conditions during exception cache updates, so we | |
431 // must own the ExceptionCache_lock before doing ANY modifications. Because | |
605 | 432 // we don't lock during reads, it is possible to have several threads attempt |
0 | 433 // to update the cache with the same data. We need to check for already inserted |
434 // copies of the current data before adding it. | |
435 | |
436 MutexLocker ml(ExceptionCache_lock); | |
437 ExceptionCache* target_entry = exception_cache_entry_for_exception(exception); | |
438 | |
439 if (target_entry == NULL || !target_entry->add_address_and_handler(pc,handler)) { | |
440 target_entry = new ExceptionCache(exception,pc,handler); | |
441 add_exception_cache_entry(target_entry); | |
442 } | |
443 } | |
444 | |
445 | |
446 //-------------end of code for ExceptionCache-------------- | |
447 | |
448 | |
449 int nmethod::total_size() const { | |
450 return | |
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451 consts_size() + |
1748 | 452 insts_size() + |
0 | 453 stub_size() + |
454 scopes_data_size() + | |
455 scopes_pcs_size() + | |
456 handler_table_size() + | |
457 nul_chk_table_size(); | |
458 } | |
459 | |
460 const char* nmethod::compile_kind() const { | |
461 if (is_osr_method()) return "osr"; | |
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462 if (method() != NULL && is_native_method()) return "c2n"; |
0 | 463 return NULL; |
464 } | |
465 | |
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466 // Fill in default values for various flag fields |
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467 void nmethod::init_defaults() { |
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468 _state = alive; |
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469 _marked_for_reclamation = 0; |
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470 _has_flushed_dependencies = 0; |
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471 _has_unsafe_access = 0; |
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472 _has_method_handle_invokes = 0; |
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473 _lazy_critical_native = 0; |
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474 _has_wide_vectors = 0; |
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475 _marked_for_deoptimization = 0; |
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476 _lock_count = 0; |
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477 _stack_traversal_mark = 0; |
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478 _unload_reported = false; // jvmti state |
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479 |
1726 | 480 #ifdef ASSERT |
481 _oops_are_stale = false; | |
482 #endif | |
483 | |
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484 _oops_do_mark_link = NULL; |
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485 _jmethod_id = NULL; |
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486 _osr_link = NULL; |
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487 _scavenge_root_link = NULL; |
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488 _scavenge_root_state = 0; |
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489 _compiler = NULL; |
9707 | 490 #ifdef GRAAL |
491 _graal_installed_code = NULL; | |
492 _triggered_deoptimizations = NULL; | |
493 #endif | |
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494 #ifdef HAVE_DTRACE_H |
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495 _trap_offset = 0; |
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496 #endif // def HAVE_DTRACE_H |
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497 } |
0 | 498 |
499 nmethod* nmethod::new_native_nmethod(methodHandle method, | |
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500 int compile_id, |
0 | 501 CodeBuffer *code_buffer, |
502 int vep_offset, | |
503 int frame_complete, | |
504 int frame_size, | |
505 ByteSize basic_lock_owner_sp_offset, | |
506 ByteSize basic_lock_sp_offset, | |
507 OopMapSet* oop_maps) { | |
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508 code_buffer->finalize_oop_references(method); |
0 | 509 // create nmethod |
510 nmethod* nm = NULL; | |
511 { | |
512 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
513 int native_nmethod_size = allocation_size(code_buffer, sizeof(nmethod)); | |
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514 CodeOffsets offsets; |
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515 offsets.set_value(CodeOffsets::Verified_Entry, vep_offset); |
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516 offsets.set_value(CodeOffsets::Frame_Complete, frame_complete); |
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517 nm = new (native_nmethod_size) nmethod(method(), native_nmethod_size, |
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518 compile_id, &offsets, |
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519 code_buffer, frame_size, |
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520 basic_lock_owner_sp_offset, |
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521 basic_lock_sp_offset, oop_maps); |
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522 if (nm != NULL) nmethod_stats.note_native_nmethod(nm); |
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523 if (PrintAssembly && nm != NULL) { |
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524 Disassembler::decode(nm); |
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525 } |
0 | 526 } |
527 // verify nmethod | |
528 debug_only(if (nm) nm->verify();) // might block | |
529 | |
530 if (nm != NULL) { | |
531 nm->log_new_nmethod(); | |
532 } | |
533 | |
534 return nm; | |
535 } | |
536 | |
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537 #ifdef HAVE_DTRACE_H |
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538 nmethod* nmethod::new_dtrace_nmethod(methodHandle method, |
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539 CodeBuffer *code_buffer, |
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540 int vep_offset, |
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541 int trap_offset, |
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542 int frame_complete, |
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543 int frame_size) { |
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544 code_buffer->finalize_oop_references(method); |
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545 // create nmethod |
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546 nmethod* nm = NULL; |
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547 { |
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548 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
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549 int nmethod_size = allocation_size(code_buffer, sizeof(nmethod)); |
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550 CodeOffsets offsets; |
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551 offsets.set_value(CodeOffsets::Verified_Entry, vep_offset); |
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552 offsets.set_value(CodeOffsets::Dtrace_trap, trap_offset); |
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553 offsets.set_value(CodeOffsets::Frame_Complete, frame_complete); |
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554 |
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555 nm = new (nmethod_size) nmethod(method(), nmethod_size, |
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556 &offsets, code_buffer, frame_size); |
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557 |
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558 if (nm != NULL) nmethod_stats.note_nmethod(nm); |
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559 if (PrintAssembly && nm != NULL) { |
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560 Disassembler::decode(nm); |
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561 } |
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562 } |
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563 // verify nmethod |
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564 debug_only(if (nm) nm->verify();) // might block |
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565 |
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566 if (nm != NULL) { |
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567 nm->log_new_nmethod(); |
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568 } |
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569 |
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570 return nm; |
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571 } |
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572 |
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573 #endif // def HAVE_DTRACE_H |
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574 |
0 | 575 nmethod* nmethod::new_nmethod(methodHandle method, |
576 int compile_id, | |
577 int entry_bci, | |
578 CodeOffsets* offsets, | |
579 int orig_pc_offset, | |
580 DebugInformationRecorder* debug_info, | |
581 Dependencies* dependencies, | |
582 CodeBuffer* code_buffer, int frame_size, | |
583 OopMapSet* oop_maps, | |
584 ExceptionHandlerTable* handler_table, | |
585 ImplicitExceptionTable* nul_chk_table, | |
586 AbstractCompiler* compiler, | |
9707 | 587 int comp_level, |
588 GrowableArray<jlong>* leaf_graph_ids | |
589 #ifdef GRAAL | |
590 , Handle installed_code, | |
591 Handle triggered_deoptimizations | |
592 #endif | |
0 | 593 ) |
594 { | |
595 assert(debug_info->oop_recorder() == code_buffer->oop_recorder(), "shared OR"); | |
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596 code_buffer->finalize_oop_references(method); |
9707 | 597 int leaf_graph_ids_size = leaf_graph_ids == NULL ? 0 : round_to(sizeof(jlong) * leaf_graph_ids->length(), oopSize); |
0 | 598 // create nmethod |
599 nmethod* nm = NULL; | |
600 { MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
601 int nmethod_size = | |
602 allocation_size(code_buffer, sizeof(nmethod)) | |
603 + adjust_pcs_size(debug_info->pcs_size()) | |
604 + round_to(dependencies->size_in_bytes() , oopSize) | |
605 + round_to(handler_table->size_in_bytes(), oopSize) | |
606 + round_to(nul_chk_table->size_in_bytes(), oopSize) | |
9707 | 607 + round_to(debug_info->data_size() , oopSize) |
8883 | 608 + leaf_graph_ids_size; |
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609 nm = new (nmethod_size) |
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610 nmethod(method(), nmethod_size, compile_id, entry_bci, offsets, |
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611 orig_pc_offset, debug_info, dependencies, code_buffer, frame_size, |
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612 oop_maps, |
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613 handler_table, |
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614 nul_chk_table, |
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615 compiler, |
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616 comp_level, |
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617 leaf_graph_ids |
9707 | 618 #ifdef GRAAL |
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619 , installed_code, |
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620 triggered_deoptimizations |
9707 | 621 #endif |
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622 ); |
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623 |
0 | 624 if (nm != NULL) { |
625 // To make dependency checking during class loading fast, record | |
626 // the nmethod dependencies in the classes it is dependent on. | |
627 // This allows the dependency checking code to simply walk the | |
628 // class hierarchy above the loaded class, checking only nmethods | |
629 // which are dependent on those classes. The slow way is to | |
630 // check every nmethod for dependencies which makes it linear in | |
631 // the number of methods compiled. For applications with a lot | |
632 // classes the slow way is too slow. | |
633 for (Dependencies::DepStream deps(nm); deps.next(); ) { | |
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634 Klass* klass = deps.context_type(); |
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635 if (klass == NULL) { |
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636 continue; // ignore things like evol_method |
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637 } |
0 | 638 |
639 // record this nmethod as dependent on this klass | |
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640 InstanceKlass::cast(klass)->add_dependent_nmethod(nm); |
0 | 641 } |
642 } | |
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643 if (nm != NULL) nmethod_stats.note_nmethod(nm); |
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644 if (PrintAssembly && nm != NULL) { |
0 | 645 Disassembler::decode(nm); |
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646 } |
0 | 647 } |
648 | |
649 // verify nmethod | |
650 debug_only(if (nm) nm->verify();) // might block | |
651 | |
652 if (nm != NULL) { | |
653 nm->log_new_nmethod(); | |
654 } | |
655 | |
656 // done | |
657 return nm; | |
658 } | |
659 | |
660 | |
661 // For native wrappers | |
662 nmethod::nmethod( | |
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663 Method* method, |
0 | 664 int nmethod_size, |
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665 int compile_id, |
0 | 666 CodeOffsets* offsets, |
667 CodeBuffer* code_buffer, | |
668 int frame_size, | |
669 ByteSize basic_lock_owner_sp_offset, | |
670 ByteSize basic_lock_sp_offset, | |
671 OopMapSet* oop_maps ) | |
672 : CodeBlob("native nmethod", code_buffer, sizeof(nmethod), | |
673 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, oop_maps), | |
2019 | 674 _native_receiver_sp_offset(basic_lock_owner_sp_offset), |
675 _native_basic_lock_sp_offset(basic_lock_sp_offset) | |
0 | 676 { |
677 { | |
678 debug_only(No_Safepoint_Verifier nsv;) | |
679 assert_locked_or_safepoint(CodeCache_lock); | |
680 | |
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681 init_defaults(); |
0 | 682 _method = method; |
683 _entry_bci = InvocationEntryBci; | |
684 // We have no exception handler or deopt handler make the | |
685 // values something that will never match a pc like the nmethod vtable entry | |
686 _exception_offset = 0; | |
687 _deoptimize_offset = 0; | |
1204 | 688 _deoptimize_mh_offset = 0; |
0 | 689 _orig_pc_offset = 0; |
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690 |
1748 | 691 _consts_offset = data_offset(); |
0 | 692 _stub_offset = data_offset(); |
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693 _oops_offset = data_offset(); |
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694 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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695 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
0 | 696 _scopes_pcs_offset = _scopes_data_offset; |
697 _dependencies_offset = _scopes_pcs_offset; | |
698 _handler_table_offset = _dependencies_offset; | |
699 _nul_chk_table_offset = _handler_table_offset; | |
9707 | 700 _leaf_graph_ids_offset = _nul_chk_table_offset; |
701 _nmethod_end_offset = _leaf_graph_ids_offset; | |
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702 _compile_id = compile_id; |
0 | 703 _comp_level = CompLevel_none; |
1748 | 704 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
705 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
0 | 706 _osr_entry_point = NULL; |
707 _exception_cache = NULL; | |
708 _pc_desc_cache.reset_to(NULL); | |
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709 _hotness_counter = NMethodSweeper::hotness_counter_reset_val(); |
0 | 710 |
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711 code_buffer->copy_values_to(this); |
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712 if (ScavengeRootsInCode && detect_scavenge_root_oops()) { |
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713 CodeCache::add_scavenge_root_nmethod(this); |
12080 | 714 Universe::heap()->register_nmethod(this); |
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715 } |
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716 debug_only(verify_scavenge_root_oops()); |
0 | 717 CodeCache::commit(this); |
718 } | |
719 | |
720 if (PrintNativeNMethods || PrintDebugInfo || PrintRelocations || PrintDependencies) { | |
721 ttyLocker ttyl; // keep the following output all in one block | |
722 // This output goes directly to the tty, not the compiler log. | |
723 // To enable tools to match it up with the compilation activity, | |
724 // be sure to tag this tty output with the compile ID. | |
725 if (xtty != NULL) { | |
726 xtty->begin_head("print_native_nmethod"); | |
727 xtty->method(_method); | |
728 xtty->stamp(); | |
729 xtty->end_head(" address='" INTPTR_FORMAT "'", (intptr_t) this); | |
730 } | |
731 // print the header part first | |
732 print(); | |
733 // then print the requested information | |
734 if (PrintNativeNMethods) { | |
735 print_code(); | |
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736 if (oop_maps != NULL) { |
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737 oop_maps->print(); |
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738 } |
0 | 739 } |
740 if (PrintRelocations) { | |
741 print_relocations(); | |
742 } | |
743 if (xtty != NULL) { | |
744 xtty->tail("print_native_nmethod"); | |
745 } | |
746 } | |
747 } | |
748 | |
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749 // For dtrace wrappers |
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750 #ifdef HAVE_DTRACE_H |
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751 nmethod::nmethod( |
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752 Method* method, |
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753 int nmethod_size, |
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754 CodeOffsets* offsets, |
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755 CodeBuffer* code_buffer, |
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756 int frame_size) |
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757 : CodeBlob("dtrace nmethod", code_buffer, sizeof(nmethod), |
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758 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, NULL), |
2019 | 759 _native_receiver_sp_offset(in_ByteSize(-1)), |
760 _native_basic_lock_sp_offset(in_ByteSize(-1)) | |
116
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761 { |
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762 { |
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763 debug_only(No_Safepoint_Verifier nsv;) |
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764 assert_locked_or_safepoint(CodeCache_lock); |
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765 |
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766 init_defaults(); |
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767 _method = method; |
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768 _entry_bci = InvocationEntryBci; |
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769 // We have no exception handler or deopt handler make the |
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770 // values something that will never match a pc like the nmethod vtable entry |
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771 _exception_offset = 0; |
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772 _deoptimize_offset = 0; |
1204 | 773 _deoptimize_mh_offset = 0; |
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774 _unwind_handler_offset = -1; |
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775 _trap_offset = offsets->value(CodeOffsets::Dtrace_trap); |
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776 _orig_pc_offset = 0; |
1748 | 777 _consts_offset = data_offset(); |
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778 _stub_offset = data_offset(); |
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779 _oops_offset = data_offset(); |
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780 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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781 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
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782 _scopes_pcs_offset = _scopes_data_offset; |
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783 _dependencies_offset = _scopes_pcs_offset; |
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784 _handler_table_offset = _dependencies_offset; |
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785 _nul_chk_table_offset = _handler_table_offset; |
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786 _nmethod_end_offset = _nul_chk_table_offset; |
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787 _compile_id = 0; // default |
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788 _comp_level = CompLevel_none; |
1748 | 789 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
790 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
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791 _osr_entry_point = NULL; |
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792 _exception_cache = NULL; |
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793 _pc_desc_cache.reset_to(NULL); |
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794 _hotness_counter = NMethodSweeper::hotness_counter_reset_val(); |
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795 |
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796 code_buffer->copy_values_to(this); |
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797 debug_only(verify_scavenge_root_oops()); |
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798 CodeCache::commit(this); |
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799 } |
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800 |
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801 if (PrintNMethods || PrintDebugInfo || PrintRelocations || PrintDependencies) { |
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802 ttyLocker ttyl; // keep the following output all in one block |
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803 // This output goes directly to the tty, not the compiler log. |
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804 // To enable tools to match it up with the compilation activity, |
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805 // be sure to tag this tty output with the compile ID. |
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806 if (xtty != NULL) { |
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807 xtty->begin_head("print_dtrace_nmethod"); |
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808 xtty->method(_method); |
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809 xtty->stamp(); |
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810 xtty->end_head(" address='" INTPTR_FORMAT "'", (intptr_t) this); |
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811 } |
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812 // print the header part first |
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813 print(); |
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814 // then print the requested information |
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815 if (PrintNMethods) { |
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816 print_code(); |
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817 } |
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818 if (PrintRelocations) { |
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819 print_relocations(); |
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820 } |
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821 if (xtty != NULL) { |
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822 xtty->tail("print_dtrace_nmethod"); |
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823 } |
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824 } |
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825 } |
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826 #endif // def HAVE_DTRACE_H |
0 | 827 |
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828 void* nmethod::operator new(size_t size, int nmethod_size) throw() { |
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829 // Not critical, may return null if there is too little continuous memory |
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830 return CodeCache::allocate(nmethod_size); |
0 | 831 } |
832 | |
833 nmethod::nmethod( | |
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834 Method* method, |
0 | 835 int nmethod_size, |
836 int compile_id, | |
837 int entry_bci, | |
838 CodeOffsets* offsets, | |
839 int orig_pc_offset, | |
840 DebugInformationRecorder* debug_info, | |
841 Dependencies* dependencies, | |
842 CodeBuffer *code_buffer, | |
843 int frame_size, | |
844 OopMapSet* oop_maps, | |
845 ExceptionHandlerTable* handler_table, | |
846 ImplicitExceptionTable* nul_chk_table, | |
847 AbstractCompiler* compiler, | |
9707 | 848 int comp_level, |
849 GrowableArray<jlong>* leaf_graph_ids | |
850 #ifdef GRAAL | |
851 , Handle installed_code, | |
852 Handle triggered_deoptimizations | |
853 #endif | |
0 | 854 ) |
855 : CodeBlob("nmethod", code_buffer, sizeof(nmethod), | |
856 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, oop_maps), | |
2019 | 857 _native_receiver_sp_offset(in_ByteSize(-1)), |
858 _native_basic_lock_sp_offset(in_ByteSize(-1)) | |
0 | 859 { |
860 assert(debug_info->oop_recorder() == code_buffer->oop_recorder(), "shared OR"); | |
861 { | |
862 debug_only(No_Safepoint_Verifier nsv;) | |
863 assert_locked_or_safepoint(CodeCache_lock); | |
864 | |
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865 init_defaults(); |
0 | 866 _method = method; |
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867 _entry_bci = entry_bci; |
0 | 868 _compile_id = compile_id; |
869 _comp_level = comp_level; | |
870 _compiler = compiler; | |
871 _orig_pc_offset = orig_pc_offset; | |
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872 _hotness_counter = NMethodSweeper::hotness_counter_reset_val(); |
1748 | 873 |
874 // Section offsets | |
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875 _consts_offset = content_offset() + code_buffer->total_offset_of(code_buffer->consts()); |
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876 _stub_offset = content_offset() + code_buffer->total_offset_of(code_buffer->stubs()); |
0 | 877 |
9707 | 878 #ifdef GRAAL |
879 _graal_installed_code = installed_code(); | |
880 _triggered_deoptimizations = (typeArrayOop)triggered_deoptimizations(); | |
881 #endif | |
882 if (compiler->is_graal()) { | |
883 // Graal might not produce any stub sections | |
884 if (offsets->value(CodeOffsets::Exceptions) != -1) { | |
885 _exception_offset = code_offset() + offsets->value(CodeOffsets::Exceptions); | |
886 } else { | |
887 _exception_offset = -1; | |
888 } | |
889 if (offsets->value(CodeOffsets::Deopt) != -1) { | |
890 _deoptimize_offset = code_offset() + offsets->value(CodeOffsets::Deopt); | |
891 } else { | |
892 _deoptimize_offset = -1; | |
893 } | |
894 if (offsets->value(CodeOffsets::DeoptMH) != -1) { | |
895 _deoptimize_mh_offset = code_offset() + offsets->value(CodeOffsets::DeoptMH); | |
896 } else { | |
897 _deoptimize_mh_offset = -1; | |
898 } | |
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899 } else { |
9707 | 900 // Exception handler and deopt handler are in the stub section |
901 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must be set"); | |
902 assert(offsets->value(CodeOffsets::Deopt ) != -1, "must be set"); | |
903 | |
904 _exception_offset = _stub_offset + offsets->value(CodeOffsets::Exceptions); | |
905 _deoptimize_offset = _stub_offset + offsets->value(CodeOffsets::Deopt); | |
906 if (offsets->value(CodeOffsets::DeoptMH) != -1) { | |
907 _deoptimize_mh_offset = _stub_offset + offsets->value(CodeOffsets::DeoptMH); | |
908 } else { | |
909 _deoptimize_mh_offset = -1; | |
910 } | |
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911 } |
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912 if (offsets->value(CodeOffsets::UnwindHandler) != -1) { |
1748 | 913 _unwind_handler_offset = code_offset() + offsets->value(CodeOffsets::UnwindHandler); |
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914 } else { |
1748 | 915 _unwind_handler_offset = -1; |
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916 } |
1748 | 917 |
9707 | 918 int leaf_graph_ids_size = leaf_graph_ids == NULL ? 0 : round_to(sizeof(jlong) * leaf_graph_ids->length(), oopSize); |
919 | |
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920 _oops_offset = data_offset(); |
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921 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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922 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
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923 |
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924 _scopes_pcs_offset = _scopes_data_offset + round_to(debug_info->data_size (), oopSize); |
0 | 925 _dependencies_offset = _scopes_pcs_offset + adjust_pcs_size(debug_info->pcs_size()); |
926 _handler_table_offset = _dependencies_offset + round_to(dependencies->size_in_bytes (), oopSize); | |
927 _nul_chk_table_offset = _handler_table_offset + round_to(handler_table->size_in_bytes(), oopSize); | |
9707 | 928 _leaf_graph_ids_offset = _nul_chk_table_offset + round_to(nul_chk_table->size_in_bytes(), oopSize); |
929 _nmethod_end_offset = _leaf_graph_ids_offset + leaf_graph_ids_size; | |
0 | 930 |
1748 | 931 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
932 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
933 _osr_entry_point = code_begin() + offsets->value(CodeOffsets::OSR_Entry); | |
0 | 934 _exception_cache = NULL; |
935 _pc_desc_cache.reset_to(scopes_pcs_begin()); | |
936 | |
937 // Copy contents of ScopeDescRecorder to nmethod | |
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938 code_buffer->copy_values_to(this); |
0 | 939 debug_info->copy_to(this); |
940 dependencies->copy_to(this); | |
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941 if (ScavengeRootsInCode && detect_scavenge_root_oops()) { |
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942 CodeCache::add_scavenge_root_nmethod(this); |
12080 | 943 Universe::heap()->register_nmethod(this); |
989
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944 } |
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945 debug_only(verify_scavenge_root_oops()); |
0 | 946 |
947 CodeCache::commit(this); | |
948 | |
949 // Copy contents of ExceptionHandlerTable to nmethod | |
950 handler_table->copy_to(this); | |
951 nul_chk_table->copy_to(this); | |
952 | |
9707 | 953 if (leaf_graph_ids != NULL && leaf_graph_ids_size > 0) { |
954 memcpy(leaf_graph_ids_begin(), leaf_graph_ids->adr_at(0), leaf_graph_ids_size); | |
955 } | |
956 | |
0 | 957 // we use the information of entry points to find out if a method is |
958 // static or non static | |
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959 assert(compiler->is_c2() || compiler->is_graal() || |
0 | 960 _method->is_static() == (entry_point() == _verified_entry_point), |
961 " entry points must be same for static methods and vice versa"); | |
962 } | |
963 | |
100
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964 bool printnmethods = PrintNMethods |
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965 || CompilerOracle::should_print(_method) |
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966 || CompilerOracle::has_option_string(_method, "PrintNMethods"); |
0 | 967 if (printnmethods || PrintDebugInfo || PrintRelocations || PrintDependencies || PrintExceptionHandlers) { |
968 print_nmethod(printnmethods); | |
969 } | |
970 } | |
971 | |
972 | |
973 // Print a short set of xml attributes to identify this nmethod. The | |
974 // output should be embedded in some other element. | |
975 void nmethod::log_identity(xmlStream* log) const { | |
976 log->print(" compile_id='%d'", compile_id()); | |
977 const char* nm_kind = compile_kind(); | |
978 if (nm_kind != NULL) log->print(" compile_kind='%s'", nm_kind); | |
979 if (compiler() != NULL) { | |
980 log->print(" compiler='%s'", compiler()->name()); | |
981 } | |
1783 | 982 if (TieredCompilation) { |
983 log->print(" level='%d'", comp_level()); | |
984 } | |
0 | 985 } |
986 | |
987 | |
988 #define LOG_OFFSET(log, name) \ | |
989 if ((intptr_t)name##_end() - (intptr_t)name##_begin()) \ | |
990 log->print(" " XSTR(name) "_offset='%d'" , \ | |
991 (intptr_t)name##_begin() - (intptr_t)this) | |
992 | |
993 | |
994 void nmethod::log_new_nmethod() const { | |
995 if (LogCompilation && xtty != NULL) { | |
996 ttyLocker ttyl; | |
997 HandleMark hm; | |
998 xtty->begin_elem("nmethod"); | |
999 log_identity(xtty); | |
1748 | 1000 xtty->print(" entry='" INTPTR_FORMAT "' size='%d'", code_begin(), size()); |
0 | 1001 xtty->print(" address='" INTPTR_FORMAT "'", (intptr_t) this); |
1002 | |
1003 LOG_OFFSET(xtty, relocation); | |
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1004 LOG_OFFSET(xtty, consts); |
1748 | 1005 LOG_OFFSET(xtty, insts); |
0 | 1006 LOG_OFFSET(xtty, stub); |
1007 LOG_OFFSET(xtty, scopes_data); | |
1008 LOG_OFFSET(xtty, scopes_pcs); | |
1009 LOG_OFFSET(xtty, dependencies); | |
1010 LOG_OFFSET(xtty, handler_table); | |
1011 LOG_OFFSET(xtty, nul_chk_table); | |
1012 LOG_OFFSET(xtty, oops); | |
1013 | |
1014 xtty->method(method()); | |
1015 xtty->stamp(); | |
1016 xtty->end_elem(); | |
1017 } | |
1018 } | |
1019 | |
1020 #undef LOG_OFFSET | |
1021 | |
1022 | |
1023 // Print out more verbose output usually for a newly created nmethod. | |
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1024 void nmethod::print_on(outputStream* st, const char* msg) const { |
0 | 1025 if (st != NULL) { |
1026 ttyLocker ttyl; | |
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1027 if (WizardMode) { |
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1028 CompileTask::print_compilation(st, this, msg, /*short_form:*/ true); |
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1029 st->print_cr(" (" INTPTR_FORMAT ")", this); |
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1030 } else { |
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1031 CompileTask::print_compilation(st, this, msg, /*short_form:*/ false); |
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1032 } |
0 | 1033 } |
1034 } | |
1035 | |
1036 | |
1037 void nmethod::print_nmethod(bool printmethod) { | |
1038 ttyLocker ttyl; // keep the following output all in one block | |
1039 if (xtty != NULL) { | |
1040 xtty->begin_head("print_nmethod"); | |
1041 xtty->stamp(); | |
1042 xtty->end_head(); | |
1043 } | |
1044 // print the header part first | |
1045 print(); | |
1046 // then print the requested information | |
1047 if (printmethod) { | |
1048 print_code(); | |
1049 print_pcs(); | |
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1050 if (oop_maps()) { |
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1051 oop_maps()->print(); |
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1052 } |
0 | 1053 } |
1054 if (PrintDebugInfo) { | |
1055 print_scopes(); | |
1056 } | |
1057 if (PrintRelocations) { | |
1058 print_relocations(); | |
1059 } | |
1060 if (PrintDependencies) { | |
1061 print_dependencies(); | |
1062 } | |
1063 if (PrintExceptionHandlers) { | |
1064 print_handler_table(); | |
1065 print_nul_chk_table(); | |
1066 } | |
1067 if (xtty != NULL) { | |
1068 xtty->tail("print_nmethod"); | |
1069 } | |
1070 } | |
1071 | |
1072 | |
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1073 // Promote one word from an assembly-time handle to a live embedded oop. |
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1074 inline void nmethod::initialize_immediate_oop(oop* dest, jobject handle) { |
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1075 if (handle == NULL || |
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1076 // As a special case, IC oops are initialized to 1 or -1. |
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1077 handle == (jobject) Universe::non_oop_word()) { |
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1078 (*dest) = (oop) handle; |
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1079 } else { |
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1080 (*dest) = JNIHandles::resolve_non_null(handle); |
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1081 } |
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1082 } |
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1083 |
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1084 |
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1085 // Have to have the same name because it's called by a template |
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1086 void nmethod::copy_values(GrowableArray<jobject>* array) { |
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1087 int length = array->length(); |
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1088 assert((address)(oops_begin() + length) <= (address)oops_end(), "oops big enough"); |
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1089 oop* dest = oops_begin(); |
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1090 for (int index = 0 ; index < length; index++) { |
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1091 initialize_immediate_oop(&dest[index], array->at(index)); |
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1092 } |
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1093 |
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1094 // Now we can fix up all the oops in the code. We need to do this |
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1095 // in the code because the assembler uses jobjects as placeholders. |
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1096 // The code and relocations have already been initialized by the |
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1097 // CodeBlob constructor, so it is valid even at this early point to |
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1098 // iterate over relocations and patch the code. |
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1099 fix_oop_relocations(NULL, NULL, /*initialize_immediates=*/ true); |
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1100 } |
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1101 |
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1102 void nmethod::copy_values(GrowableArray<Metadata*>* array) { |
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1103 int length = array->length(); |
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1104 assert((address)(metadata_begin() + length) <= (address)metadata_end(), "big enough"); |
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1105 Metadata** dest = metadata_begin(); |
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1106 for (int index = 0 ; index < length; index++) { |
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1107 dest[index] = array->at(index); |
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1108 } |
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1109 } |
1563
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1110 |
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1111 bool nmethod::is_at_poll_return(address pc) { |
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1112 RelocIterator iter(this, pc, pc+1); |
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1113 while (iter.next()) { |
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1114 if (iter.type() == relocInfo::poll_return_type) |
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1115 return true; |
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1116 } |
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1117 return false; |
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1118 } |
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1119 |
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1120 |
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1121 bool nmethod::is_at_poll_or_poll_return(address pc) { |
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1122 RelocIterator iter(this, pc, pc+1); |
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1123 while (iter.next()) { |
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1124 relocInfo::relocType t = iter.type(); |
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1125 if (t == relocInfo::poll_return_type || t == relocInfo::poll_type) |
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1126 return true; |
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1127 } |
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1128 return false; |
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1129 } |
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1130 |
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1131 |
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1132 void nmethod::fix_oop_relocations(address begin, address end, bool initialize_immediates) { |
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1133 // re-patch all oop-bearing instructions, just in case some oops moved |
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1134 RelocIterator iter(this, begin, end); |
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1135 while (iter.next()) { |
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1136 if (iter.type() == relocInfo::oop_type) { |
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1137 oop_Relocation* reloc = iter.oop_reloc(); |
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1138 if (initialize_immediates && reloc->oop_is_immediate()) { |
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1139 oop* dest = reloc->oop_addr(); |
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1140 initialize_immediate_oop(dest, (jobject) *dest); |
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1141 } |
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1142 // Refresh the oop-related bits of this instruction. |
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1143 reloc->fix_oop_relocation(); |
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1144 } else if (iter.type() == relocInfo::metadata_type) { |
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1145 metadata_Relocation* reloc = iter.metadata_reloc(); |
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1146 reloc->fix_metadata_relocation(); |
1563
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|
1147 } |
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|
1148 } |
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|
1149 } |
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|
1150 |
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|
1151 |
2375
d673ef06fe96
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parents:
2360
diff
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|
1152 void nmethod::verify_oop_relocations() { |
d673ef06fe96
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diff
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|
1153 // Ensure sure that the code matches the current oop values |
d673ef06fe96
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diff
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|
1154 RelocIterator iter(this, NULL, NULL); |
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diff
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1155 while (iter.next()) { |
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parents:
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diff
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1156 if (iter.type() == relocInfo::oop_type) { |
d673ef06fe96
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diff
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1157 oop_Relocation* reloc = iter.oop_reloc(); |
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diff
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1158 if (!reloc->oop_is_immediate()) { |
d673ef06fe96
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diff
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|
1159 reloc->verify_oop_relocation(); |
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diff
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|
1160 } |
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diff
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|
1161 } |
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diff
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|
1162 } |
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|
1163 } |
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diff
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|
1164 |
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diff
changeset
|
1165 |
0 | 1166 ScopeDesc* nmethod::scope_desc_at(address pc) { |
1167 PcDesc* pd = pc_desc_at(pc); | |
1168 guarantee(pd != NULL, "scope must be present"); | |
1169 return new ScopeDesc(this, pd->scope_decode_offset(), | |
9707 | 1170 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
|
1171 pd->return_oop()); |
0 | 1172 } |
1173 | |
1174 | |
1175 void nmethod::clear_inline_caches() { | |
1176 assert(SafepointSynchronize::is_at_safepoint(), "cleaning of IC's only allowed at safepoint"); | |
1177 if (is_zombie()) { | |
1178 return; | |
1179 } | |
1180 | |
1181 RelocIterator iter(this); | |
1182 while (iter.next()) { | |
1183 iter.reloc()->clear_inline_cache(); | |
1184 } | |
1185 } | |
1186 | |
1187 | |
1188 void nmethod::cleanup_inline_caches() { | |
1189 | |
1538
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|
1190 assert_locked_or_safepoint(CompiledIC_lock); |
0 | 1191 |
1192 // If the method is not entrant or zombie then a JMP is plastered over the | |
1193 // first few bytes. If an oop in the old code was there, that oop | |
1194 // should not get GC'd. Skip the first few bytes of oops on | |
1195 // not-entrant methods. | |
1196 address low_boundary = verified_entry_point(); | |
1197 if (!is_in_use()) { | |
1198 low_boundary += NativeJump::instruction_size; | |
1199 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
1200 // This means that the low_boundary is going to be a little too high. | |
1201 // This shouldn't matter, since oops of non-entrant methods are never used. | |
1202 // In fact, why are we bothering to look at oops in a non-entrant method?? | |
1203 } | |
1204 | |
1205 // Find all calls in an nmethod, and clear the ones that points to zombie methods | |
1206 ResourceMark rm; | |
1207 RelocIterator iter(this, low_boundary); | |
1208 while(iter.next()) { | |
1209 switch(iter.type()) { | |
1210 case relocInfo::virtual_call_type: | |
1211 case relocInfo::opt_virtual_call_type: { | |
1212 CompiledIC *ic = CompiledIC_at(iter.reloc()); | |
1213 // Ok, to lookup references to zombies here | |
1214 CodeBlob *cb = CodeCache::find_blob_unsafe(ic->ic_destination()); | |
1215 if( cb != NULL && cb->is_nmethod() ) { | |
1216 nmethod* nm = (nmethod*)cb; | |
1217 // Clean inline caches pointing to both zombie and not_entrant methods | |
1202 | 1218 if (!nm->is_in_use() || (nm->method()->code() != nm)) ic->set_to_clean(); |
0 | 1219 } |
1220 break; | |
1221 } | |
1222 case relocInfo::static_call_type: { | |
1223 CompiledStaticCall *csc = compiledStaticCall_at(iter.reloc()); | |
1224 CodeBlob *cb = CodeCache::find_blob_unsafe(csc->destination()); | |
1225 if( cb != NULL && cb->is_nmethod() ) { | |
1226 nmethod* nm = (nmethod*)cb; | |
1227 // Clean inline caches pointing to both zombie and not_entrant methods | |
1202 | 1228 if (!nm->is_in_use() || (nm->method()->code() != nm)) csc->set_to_clean(); |
0 | 1229 } |
1230 break; | |
1231 } | |
1232 } | |
1233 } | |
1234 } | |
1235 | |
989
148e5441d916
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jrose
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|
1236 // This is a private interface with the sweeper. |
0 | 1237 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
|
1238 assert(is_alive(), "Must be an alive method"); |
1644
2a47bd84841f
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|
1239 // Set the traversal mark to ensure that the sweeper does 2 |
2a47bd84841f
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diff
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1240 // cleaning passes before moving to zombie. |
0 | 1241 set_stack_traversal_mark(NMethodSweeper::traversal_count()); |
1242 } | |
1243 | |
2342
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
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diff
changeset
|
1244 // 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
|
1245 // 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
|
1246 // and not in use by the ServiceThread) |
0 | 1247 bool nmethod::can_not_entrant_be_converted() { |
1248 assert(is_not_entrant(), "must be a non-entrant method"); | |
1249 | |
1250 // Since the nmethod sweeper only does partial sweep the sweeper's traversal | |
1251 // count can be greater than the stack traversal count before it hits the | |
1252 // 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:
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diff
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|
1253 return stack_traversal_mark()+1 < NMethodSweeper::traversal_count() && |
46a56fac55c7
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diff
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|
1254 !is_locked_by_vm(); |
0 | 1255 } |
1256 | |
1257 void nmethod::inc_decompile_count() { | |
9707 | 1258 if (!is_compiled_by_c2() && !is_compiled_by_graal()) return; |
0 | 1259 // Could be gated by ProfileTraps, but do not bother... |
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1260 Method* m = method(); |
0 | 1261 if (m == NULL) return; |
6725
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1262 MethodData* mdo = m->method_data(); |
0 | 1263 if (mdo == NULL) return; |
6725
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1264 // There is a benign race here. See comments in methodData.hpp. |
0 | 1265 mdo->inc_decompile_count(); |
1266 } | |
1267 | |
1268 void nmethod::make_unloaded(BoolObjectClosure* is_alive, oop cause) { | |
1269 | |
1270 post_compiled_method_unload(); | |
1271 | |
1272 // Since this nmethod is being unloaded, make sure that dependencies | |
1273 // recorded in instanceKlasses get flushed and pass non-NULL closure to | |
1274 // indicate that this work is being done during a GC. | |
1275 assert(Universe::heap()->is_gc_active(), "should only be called during gc"); | |
1276 assert(is_alive != NULL, "Should be non-NULL"); | |
1277 // A non-NULL is_alive closure indicates that this is being called during GC. | |
1278 flush_dependencies(is_alive); | |
1279 | |
1280 // Break cycle between nmethod & method | |
1281 if (TraceClassUnloading && WizardMode) { | |
1282 tty->print_cr("[Class unloading: Making nmethod " INTPTR_FORMAT | |
6725
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1283 " unloadable], Method*(" INTPTR_FORMAT |
0 | 1284 "), cause(" INTPTR_FORMAT ")", |
1285 this, (address)_method, (address)cause); | |
989
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|
1286 if (!Universe::heap()->is_gc_active()) |
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|
1287 cause->klass()->print(); |
0 | 1288 } |
941 | 1289 // Unlink the osr method, so we do not look this up again |
1290 if (is_osr_method()) { | |
1291 invalidate_osr_method(); | |
1292 } | |
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|
1293 // If _method is already NULL the Method* is about to be unloaded, |
0 | 1294 // so we don't have to break the cycle. Note that it is possible to |
6725
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1295 // have the Method* live here, in case we unload the nmethod because |
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|
1296 // it is pointing to some oop (other than the Method*) being unloaded. |
0 | 1297 if (_method != NULL) { |
6725
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|
1298 // OSR methods point to the Method*, but the Method* does not |
0 | 1299 // point back! |
1300 if (_method->code() == this) { | |
1301 _method->clear_code(); // Break a cycle | |
1302 } | |
1303 _method = NULL; // Clear the method of this dead nmethod | |
1304 } | |
9707 | 1305 |
1306 #ifdef GRAAL | |
1307 // The method can only be unloaded after the pointer to the installed code | |
1308 // Java wrapper is no longer alive. Here we need to clear out this weak | |
1309 // reference to the dead object. | |
1310 if (_graal_installed_code != NULL) { | |
10560
0b1b5356b566
Fixed issues around execute compiled code stub. Made TraceDeoptimization a product flag.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
10475
diff
changeset
|
1311 HotSpotInstalledCode::set_codeBlob(_graal_installed_code, 0); |
9707 | 1312 _graal_installed_code = NULL; |
1313 } | |
1314 #endif | |
1315 | |
0 | 1316 // Make the class unloaded - i.e., change state and notify sweeper |
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|
1317 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint"); |
0 | 1318 if (is_in_use()) { |
1319 // Transitioning directly from live to unloaded -- so | |
1320 // we need to force a cache clean-up; remember this | |
1321 // for later on. | |
1322 CodeCache::set_needs_cache_clean(true); | |
1323 } | |
1644
2a47bd84841f
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never
parents:
1616
diff
changeset
|
1324 _state = unloaded; |
0 | 1325 |
1109
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1326 // Log the unloading. |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
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parents:
994
diff
changeset
|
1327 log_state_change(); |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1328 |
6725
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6266
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changeset
|
1329 // The Method* is gone at this point |
0 | 1330 assert(_method == NULL, "Tautology"); |
1331 | |
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1332 set_osr_link(NULL); |
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1333 //set_scavenge_root_link(NULL); // done by prune_scavenge_root_nmethods |
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1334 NMethodSweeper::notify(); |
0 | 1335 } |
1336 | |
1337 void nmethod::invalidate_osr_method() { | |
1338 assert(_entry_bci != InvocationEntryBci, "wrong kind of nmethod"); | |
1339 // Remove from list of active nmethods | |
1340 if (method() != NULL) | |
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1341 method()->method_holder()->remove_osr_nmethod(this); |
0 | 1342 // Set entry as invalid |
1343 _entry_bci = InvalidOSREntryBci; | |
1344 } | |
1345 | |
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1346 void nmethod::log_state_change() const { |
0 | 1347 if (LogCompilation) { |
1348 if (xtty != NULL) { | |
1349 ttyLocker ttyl; // keep the following output all in one block | |
1644
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1350 if (_state == unloaded) { |
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1351 xtty->begin_elem("make_unloaded thread='" UINTX_FORMAT "'", |
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1352 os::current_thread_id()); |
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1353 } else { |
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1354 xtty->begin_elem("make_not_entrant thread='" UINTX_FORMAT "'%s", |
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1355 os::current_thread_id(), |
1644
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1356 (_state == zombie ? " zombie='1'" : "")); |
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1357 } |
0 | 1358 log_identity(xtty); |
1359 xtty->stamp(); | |
1360 xtty->end_elem(); | |
1361 } | |
1362 } | |
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1363 if (PrintCompilation && _state != unloaded) { |
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1364 print_on(tty, _state == zombie ? "made zombie" : "made not entrant"); |
0 | 1365 } |
1366 } | |
1367 | |
1368 // Common functionality for both make_not_entrant and make_zombie | |
1141 | 1369 bool nmethod::make_not_entrant_or_zombie(unsigned int state) { |
0 | 1370 assert(state == zombie || state == not_entrant, "must be zombie or not_entrant"); |
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1371 assert(!is_zombie(), "should not already be a zombie"); |
0 | 1372 |
1644
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1373 // Make sure neither the nmethod nor the method is flushed in case of a safepoint in code below. |
0 | 1374 nmethodLocker nml(this); |
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1375 methodHandle the_method(method()); |
1726 | 1376 No_Safepoint_Verifier nsv; |
0 | 1377 |
12080 | 1378 // during patching, depending on the nmethod state we must notify the GC that |
1379 // code has been unloaded, unregistering it. We cannot do this right while | |
1380 // holding the Patching_lock because we need to use the CodeCache_lock. This | |
1381 // would be prone to deadlocks. | |
1382 // This flag is used to remember whether we need to later lock and unregister. | |
1383 bool nmethod_needs_unregister = false; | |
1384 | |
0 | 1385 { |
1109
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1386 // invalidate osr nmethod before acquiring the patching lock since |
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1387 // they both acquire leaf locks and we don't want a deadlock. |
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1388 // This logic is equivalent to the logic below for patching the |
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1389 // verified entry point of regular methods. |
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1390 if (is_osr_method()) { |
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1391 // this effectively makes the osr nmethod not entrant |
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1392 invalidate_osr_method(); |
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1393 } |
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1394 |
0 | 1395 // Enter critical section. Does not block for safepoint. |
1396 MutexLockerEx pl(Patching_lock, Mutex::_no_safepoint_check_flag); | |
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1397 |
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1398 if (_state == state) { |
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1399 // another thread already performed this transition so nothing |
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1400 // to do, but return false to indicate this. |
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1401 return false; |
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1402 } |
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1403 |
0 | 1404 // The caller can be calling the method statically or through an inline |
1405 // cache call. | |
1109
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1406 if (!is_osr_method() && !is_not_entrant()) { |
9707 | 1407 address stub = SharedRuntime::get_handle_wrong_method_stub(); |
1408 NativeJump::patch_verified_entry(entry_point(), verified_entry_point(), stub); | |
0 | 1409 } |
1410 | |
1644
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1411 if (is_in_use()) { |
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1412 // It's a true state change, so mark the method as decompiled. |
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1413 // Do it only for transition from alive. |
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1414 inc_decompile_count(); |
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1415 } |
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1416 |
12080 | 1417 // If the state is becoming a zombie, signal to unregister the nmethod with |
1418 // the heap. | |
1419 // This nmethod may have already been unloaded during a full GC. | |
1420 if ((state == zombie) && !is_unloaded()) { | |
1421 nmethod_needs_unregister = true; | |
1422 } | |
1423 | |
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1424 // Must happen before state change. Otherwise we have a race condition in |
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1425 // nmethod::can_not_entrant_be_converted(). I.e., a method can immediately |
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1426 // transition its state from 'not_entrant' to 'zombie' without having to wait |
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1427 // for stack scanning. |
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1428 if (state == not_entrant) { |
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1429 mark_as_seen_on_stack(); |
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1430 OrderAccess::storestore(); |
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1431 } |
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1432 |
0 | 1433 // Change state |
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1434 _state = state; |
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1435 |
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1436 // Log the transition once |
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1437 log_state_change(); |
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1438 |
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1439 // Remove nmethod from method. |
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1440 // We need to check if both the _code and _from_compiled_code_entry_point |
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1441 // refer to this nmethod because there is a race in setting these two fields |
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1442 // in Method* as seen in bugid 4947125. |
1644
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1443 // If the vep() points to the zombie nmethod, the memory for the nmethod |
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1444 // could be flushed and the compiler and vtable stubs could still call |
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1445 // through it. |
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1446 if (method() != NULL && (method()->code() == this || |
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1447 method()->from_compiled_entry() == verified_entry_point())) { |
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1448 HandleMark hm; |
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1449 method()->clear_code(); |
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1450 } |
0 | 1451 } // leave critical region under Patching_lock |
1452 | |
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1453 // When the nmethod becomes zombie it is no longer alive so the |
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1454 // dependencies must be flushed. nmethods in the not_entrant |
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1455 // state will be flushed later when the transition to zombie |
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1456 // happens or they get unloaded. |
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1457 if (state == zombie) { |
1726 | 1458 { |
1459 // Flushing dependecies must be done before any possible | |
1460 // safepoint can sneak in, otherwise the oops used by the | |
1461 // dependency logic could have become stale. | |
1462 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
12080 | 1463 if (nmethod_needs_unregister) { |
1464 Universe::heap()->unregister_nmethod(this); | |
1465 } | |
1726 | 1466 flush_dependencies(NULL); |
1467 } | |
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1468 |
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1469 // zombie only - if a JVMTI agent has enabled the CompiledMethodUnload |
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1470 // event and it hasn't already been reported for this nmethod then |
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1471 // report it now. The event may have been reported earilier if the GC |
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1472 // marked it for unloading). JvmtiDeferredEventQueue support means |
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1473 // we no longer go to a safepoint here. |
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1474 post_compiled_method_unload(); |
1726 | 1475 |
1476 #ifdef ASSERT | |
1477 // It's no longer safe to access the oops section since zombie | |
1478 // nmethods aren't scanned for GC. | |
1479 _oops_are_stale = true; | |
1480 #endif | |
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1481 // the Method may be reclaimed by class unloading now that the |
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1482 // nmethod is in zombie state |
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1483 set_method(NULL); |
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1484 } else { |
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1485 assert(state == not_entrant, "other cases may need to be handled differently"); |
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1486 } |
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1487 #ifdef GRAAL |
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1488 if (_graal_installed_code != NULL) { |
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1489 // Break the link between nmethod and HotSpotInstalledCode such that the nmethod can subsequently be flushed safely. |
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1490 HotSpotInstalledCode::set_codeBlob(_graal_installed_code, 0); |
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1491 } |
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1492 #endif |
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1493 |
0 | 1494 if (TraceCreateZombies) { |
9707 | 1495 ResourceMark m; |
1496 tty->print_cr("nmethod <" INTPTR_FORMAT "> %s code made %s", this, this->method()->name_and_sig_as_C_string(), (state == not_entrant) ? "not entrant" : "zombie"); | |
0 | 1497 } |
1498 | |
1499 // Make sweeper aware that there is a zombie method that needs to be removed | |
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1500 NMethodSweeper::notify(); |
0 | 1501 |
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1502 return true; |
0 | 1503 } |
1504 | |
1505 void nmethod::flush() { | |
1506 // Note that there are no valid oops in the nmethod anymore. | |
1507 assert(is_zombie() || (is_osr_method() && is_unloaded()), "must be a zombie method"); | |
1508 assert(is_marked_for_reclamation() || (is_osr_method() && is_unloaded()), "must be marked for reclamation"); | |
1509 | |
1510 assert (!is_locked_by_vm(), "locked methods shouldn't be flushed"); | |
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1511 assert_locked_or_safepoint(CodeCache_lock); |
0 | 1512 |
1513 // completely deallocate this method | |
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1514 Events::log(JavaThread::current(), "flushing nmethod " INTPTR_FORMAT, this); |
0 | 1515 if (PrintMethodFlushing) { |
1202 | 1516 tty->print_cr("*flushing nmethod %3d/" INTPTR_FORMAT ". Live blobs:" UINT32_FORMAT "/Free CodeCache:" SIZE_FORMAT "Kb", |
1517 _compile_id, this, CodeCache::nof_blobs(), CodeCache::unallocated_capacity()/1024); | |
0 | 1518 } |
1519 | |
1520 // We need to deallocate any ExceptionCache data. | |
1521 // Note that we do not need to grab the nmethod lock for this, it | |
1522 // better be thread safe if we're disposing of it! | |
1523 ExceptionCache* ec = exception_cache(); | |
1524 set_exception_cache(NULL); | |
1525 while(ec != NULL) { | |
1526 ExceptionCache* next = ec->next(); | |
1527 delete ec; | |
1528 ec = next; | |
1529 } | |
1530 | |
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1531 if (on_scavenge_root_list()) { |
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1532 CodeCache::drop_scavenge_root_nmethod(this); |
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1533 } |
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1534 |
1692 | 1535 #ifdef SHARK |
1845
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1536 ((SharkCompiler *) compiler())->free_compiled_method(insts_begin()); |
1692 | 1537 #endif // SHARK |
1538 | |
0 | 1539 ((CodeBlob*)(this))->flush(); |
1540 | |
1541 CodeCache::free(this); | |
1542 } | |
1543 | |
1544 | |
1545 // | |
1546 // Notify all classes this nmethod is dependent on that it is no | |
1547 // longer dependent. This should only be called in two situations. | |
1548 // First, when a nmethod transitions to a zombie all dependents need | |
1549 // to be clear. Since zombification happens at a safepoint there's no | |
1550 // synchronization issues. The second place is a little more tricky. | |
1551 // During phase 1 of mark sweep class unloading may happen and as a | |
1552 // result some nmethods may get unloaded. In this case the flushing | |
1553 // of dependencies must happen during phase 1 since after GC any | |
1554 // dependencies in the unloaded nmethod won't be updated, so | |
1555 // traversing the dependency information in unsafe. In that case this | |
1556 // function is called with a non-NULL argument and this function only | |
1557 // notifies instanceKlasses that are reachable | |
1558 | |
1559 void nmethod::flush_dependencies(BoolObjectClosure* is_alive) { | |
1538
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1560 assert_locked_or_safepoint(CodeCache_lock); |
0 | 1561 assert(Universe::heap()->is_gc_active() == (is_alive != NULL), |
1562 "is_alive is non-NULL if and only if we are called during GC"); | |
1563 if (!has_flushed_dependencies()) { | |
1564 set_has_flushed_dependencies(); | |
1565 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
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1566 Klass* klass = deps.context_type(); |
0 | 1567 if (klass == NULL) continue; // ignore things like evol_method |
1568 | |
1569 // During GC the is_alive closure is non-NULL, and is used to | |
1570 // determine liveness of dependees that need to be updated. | |
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1571 if (is_alive == NULL || klass->is_loader_alive(is_alive)) { |
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1572 InstanceKlass::cast(klass)->remove_dependent_nmethod(this); |
0 | 1573 } |
1574 } | |
1575 } | |
1576 } | |
1577 | |
1578 | |
1579 // If this oop is not live, the nmethod can be unloaded. | |
6787
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1580 bool nmethod::can_unload(BoolObjectClosure* is_alive, oop* root, bool unloading_occurred) { |
0 | 1581 assert(root != NULL, "just checking"); |
1582 oop obj = *root; | |
1583 if (obj == NULL || is_alive->do_object_b(obj)) { | |
1584 return false; | |
1585 } | |
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1586 |
989
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1587 // If ScavengeRootsInCode is true, an nmethod might be unloaded |
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1588 // simply because one of its constant oops has gone dead. |
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1589 // No actual classes need to be unloaded in order for this to occur. |
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1590 assert(unloading_occurred || ScavengeRootsInCode, "Inconsistency in unloading"); |
0 | 1591 make_unloaded(is_alive, obj); |
1592 return true; | |
1593 } | |
1594 | |
1595 // ------------------------------------------------------------------ | |
1596 // post_compiled_method_load_event | |
1597 // new method for install_code() path | |
1598 // Transfer information from compilation to jvmti | |
1599 void nmethod::post_compiled_method_load_event() { | |
1600 | |
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1601 Method* moop = method(); |
4006 | 1602 #ifndef USDT2 |
0 | 1603 HS_DTRACE_PROBE8(hotspot, compiled__method__load, |
1604 moop->klass_name()->bytes(), | |
1605 moop->klass_name()->utf8_length(), | |
1606 moop->name()->bytes(), | |
1607 moop->name()->utf8_length(), | |
1608 moop->signature()->bytes(), | |
1609 moop->signature()->utf8_length(), | |
1748 | 1610 insts_begin(), insts_size()); |
4006 | 1611 #else /* USDT2 */ |
1612 HOTSPOT_COMPILED_METHOD_LOAD( | |
1613 (char *) moop->klass_name()->bytes(), | |
1614 moop->klass_name()->utf8_length(), | |
1615 (char *) moop->name()->bytes(), | |
1616 moop->name()->utf8_length(), | |
1617 (char *) moop->signature()->bytes(), | |
1618 moop->signature()->utf8_length(), | |
1619 insts_begin(), insts_size()); | |
1620 #endif /* USDT2 */ | |
0 | 1621 |
1616
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1622 if (JvmtiExport::should_post_compiled_method_load() || |
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1623 JvmtiExport::should_post_compiled_method_unload()) { |
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1624 get_and_cache_jmethod_id(); |
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1625 } |
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1626 |
0 | 1627 if (JvmtiExport::should_post_compiled_method_load()) { |
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1628 // Let the Service thread (which is a real Java thread) post the event |
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1629 MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag); |
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1630 JvmtiDeferredEventQueue::enqueue( |
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1631 JvmtiDeferredEvent::compiled_method_load_event(this)); |
0 | 1632 } |
1633 } | |
1634 | |
1616
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1635 jmethodID nmethod::get_and_cache_jmethod_id() { |
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1636 if (_jmethod_id == NULL) { |
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1637 // Cache the jmethod_id since it can no longer be looked up once the |
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1638 // method itself has been marked for unloading. |
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1639 _jmethod_id = method()->jmethod_id(); |
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|
1640 } |
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1641 return _jmethod_id; |
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1642 } |
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|
1643 |
0 | 1644 void nmethod::post_compiled_method_unload() { |
1577
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1645 if (unload_reported()) { |
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|
1646 // During unloading we transition to unloaded and then to zombie |
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|
1647 // and the unloading is reported during the first transition. |
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|
1648 return; |
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|
1649 } |
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diff
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|
1650 |
0 | 1651 assert(_method != NULL && !is_unloaded(), "just checking"); |
1652 DTRACE_METHOD_UNLOAD_PROBE(method()); | |
1653 | |
1654 // If a JVMTI agent has enabled the CompiledMethodUnload event then | |
1616
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parents:
1602
diff
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|
1655 // post the event. Sometime later this nmethod will be made a zombie |
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1656 // by the sweeper but the Method* will not be valid at that point. |
1616
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diff
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|
1657 // If the _jmethod_id is null then no load event was ever requested |
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never
parents:
1602
diff
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|
1658 // so don't bother posting the unload. The main reason for this is |
6725
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1659 // that the jmethodID is a weak reference to the Method* so if |
1616
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diff
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|
1660 // it's being unloaded there's no way to look it up since the weak |
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diff
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|
1661 // ref will have been cleared. |
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diff
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|
1662 if (_jmethod_id != NULL && JvmtiExport::should_post_compiled_method_unload()) { |
0 | 1663 assert(!unload_reported(), "already unloaded"); |
2195
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|
1664 JvmtiDeferredEvent event = |
2342
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
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2321
diff
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|
1665 JvmtiDeferredEvent::compiled_method_unload_event(this, |
2195
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1666 _jmethod_id, insts_begin()); |
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1667 if (SafepointSynchronize::is_at_safepoint()) { |
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1668 // Don't want to take the queueing lock. Add it as pending and |
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1669 // it will get enqueued later. |
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1670 JvmtiDeferredEventQueue::add_pending_event(event); |
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1671 } else { |
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|
1672 MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag); |
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|
1673 JvmtiDeferredEventQueue::enqueue(event); |
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1674 } |
0 | 1675 } |
1676 | |
1677 // The JVMTI CompiledMethodUnload event can be enabled or disabled at | |
1678 // any time. As the nmethod is being unloaded now we mark it has | |
1679 // having the unload event reported - this will ensure that we don't | |
1680 // attempt to report the event in the unlikely scenario where the | |
1681 // event is enabled at the time the nmethod is made a zombie. | |
1682 set_unload_reported(); | |
1683 } | |
1684 | |
1685 // This is called at the end of the strong tracing/marking phase of a | |
1686 // GC to unload an nmethod if it contains otherwise unreachable | |
1687 // oops. | |
1688 | |
6787
8966c2d65d96
7200470: KeepAliveClosure not needed in CodeCache::do_unloading
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1689 void nmethod::do_unloading(BoolObjectClosure* is_alive, bool unloading_occurred) { |
0 | 1690 // Make sure the oop's ready to receive visitors |
1691 assert(!is_zombie() && !is_unloaded(), | |
1692 "should not call follow on zombie or unloaded nmethod"); | |
1693 | |
1694 // If the method is not entrant then a JMP is plastered over the | |
1695 // first few bytes. If an oop in the old code was there, that oop | |
1696 // should not get GC'd. Skip the first few bytes of oops on | |
1697 // not-entrant methods. | |
1698 address low_boundary = verified_entry_point(); | |
1699 if (is_not_entrant()) { | |
1700 low_boundary += NativeJump::instruction_size; | |
1701 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
1702 // (See comment above.) | |
1703 } | |
1704 | |
1705 // The RedefineClasses() API can cause the class unloading invariant | |
1706 // to no longer be true. See jvmtiExport.hpp for details. | |
1707 // Also, leave a debugging breadcrumb in local flag. | |
1708 bool a_class_was_redefined = JvmtiExport::has_redefined_a_class(); | |
1709 if (a_class_was_redefined) { | |
1710 // This set of the unloading_occurred flag is done before the | |
1711 // call to post_compiled_method_unload() so that the unloading | |
1712 // of this nmethod is reported. | |
1713 unloading_occurred = true; | |
1714 } | |
1715 | |
9707 | 1716 #ifdef GRAAL |
1717 // Follow Graal method | |
1718 if (_graal_installed_code != NULL) { | |
1719 if (HotSpotNmethod::isDefault(_graal_installed_code)) { | |
1720 if (!is_alive->do_object_b(_graal_installed_code)) { | |
1721 _graal_installed_code = NULL; | |
1722 } | |
1723 } else { | |
1724 if (can_unload(is_alive, (oop*)&_graal_installed_code, unloading_occurred)) { | |
1725 return; | |
1726 } | |
1727 } | |
1728 } | |
1729 #endif | |
1730 | |
0 | 1731 // Exception cache |
1732 ExceptionCache* ec = exception_cache(); | |
1733 while (ec != NULL) { | |
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1734 Klass* ex_klass = ec->exception_type(); |
0 | 1735 ExceptionCache* next_ec = ec->next(); |
6725
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1736 if (ex_klass != NULL && !ex_klass->is_loader_alive(is_alive)) { |
0 | 1737 remove_from_exception_cache(ec); |
1738 } | |
1739 ec = next_ec; | |
1740 } | |
1741 | |
1742 // If class unloading occurred we first iterate over all inline caches and | |
1743 // clear ICs where the cached oop is referring to an unloaded klass or method. | |
1744 // The remaining live cached oops will be traversed in the relocInfo::oop_type | |
1745 // iteration below. | |
1746 if (unloading_occurred) { | |
1747 RelocIterator iter(this, low_boundary); | |
1748 while(iter.next()) { | |
1749 if (iter.type() == relocInfo::virtual_call_type) { | |
1750 CompiledIC *ic = CompiledIC_at(iter.reloc()); | |
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1751 if (ic->is_icholder_call()) { |
0 | 1752 // The only exception is compiledICHolder oops which may |
1753 // yet be marked below. (We check this further below). | |
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1754 CompiledICHolder* cichk_oop = ic->cached_icholder(); |
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1755 if (cichk_oop->holder_method()->method_holder()->is_loader_alive(is_alive) && |
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|
1756 cichk_oop->holder_klass()->is_loader_alive(is_alive)) { |
0 | 1757 continue; |
1758 } | |
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|
1759 } else { |
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|
1760 Metadata* ic_oop = ic->cached_metadata(); |
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1761 if (ic_oop != NULL) { |
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1762 if (ic_oop->is_klass()) { |
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|
1763 if (((Klass*)ic_oop)->is_loader_alive(is_alive)) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
1764 continue; |
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|
1765 } |
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|
1766 } else if (ic_oop->is_method()) { |
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1767 if (((Method*)ic_oop)->method_holder()->is_loader_alive(is_alive)) { |
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|
1768 continue; |
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|
1769 } |
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|
1770 } else { |
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|
1771 ShouldNotReachHere(); |
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|
1772 } |
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1773 } |
0 | 1774 } |
1775 ic->set_to_clean(); | |
1776 } | |
1777 } | |
1778 } | |
1779 | |
1780 // Compiled code | |
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1781 { |
0 | 1782 RelocIterator iter(this, low_boundary); |
1783 while (iter.next()) { | |
1784 if (iter.type() == relocInfo::oop_type) { | |
1785 oop_Relocation* r = iter.oop_reloc(); | |
1786 // In this loop, we must only traverse those oops directly embedded in | |
1787 // the code. Other oops (oop_index>0) are seen as part of scopes_oops. | |
1788 assert(1 == (r->oop_is_immediate()) + | |
1789 (r->oop_addr() >= oops_begin() && r->oop_addr() < oops_end()), | |
1790 "oop must be found in exactly one place"); | |
1791 if (r->oop_is_immediate() && r->oop_value() != NULL) { | |
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1792 if (can_unload(is_alive, r->oop_addr(), unloading_occurred)) { |
0 | 1793 return; |
1794 } | |
1795 } | |
1796 } | |
1797 } | |
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1798 } |
0 | 1799 |
1800 | |
1801 // Scopes | |
1802 for (oop* p = oops_begin(); p < oops_end(); p++) { | |
1803 if (*p == Universe::non_oop_word()) continue; // skip non-oops | |
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1804 if (can_unload(is_alive, p, unloading_occurred)) { |
0 | 1805 return; |
1806 } | |
1807 } | |
1808 | |
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1809 // Ensure that all metadata is still alive |
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1810 verify_metadata_loaders(low_boundary, is_alive); |
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1811 } |
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1812 |
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1813 #ifdef ASSERT |
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1814 |
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1815 class CheckClass : AllStatic { |
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1816 static BoolObjectClosure* _is_alive; |
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1817 |
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1818 // Check class_loader is alive for this bit of metadata. |
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1819 static void check_class(Metadata* md) { |
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1820 Klass* klass = NULL; |
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1821 if (md->is_klass()) { |
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1822 klass = ((Klass*)md); |
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1823 } else if (md->is_method()) { |
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1824 klass = ((Method*)md)->method_holder(); |
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1825 } else if (md->is_methodData()) { |
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1826 klass = ((MethodData*)md)->method()->method_holder(); |
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1827 } else { |
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1828 md->print(); |
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1829 ShouldNotReachHere(); |
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1830 } |
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1831 assert(klass->is_loader_alive(_is_alive), "must be alive"); |
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1832 } |
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1833 public: |
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1834 static void do_check_class(BoolObjectClosure* is_alive, nmethod* nm) { |
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1835 assert(SafepointSynchronize::is_at_safepoint(), "this is only ok at safepoint"); |
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1836 _is_alive = is_alive; |
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1837 nm->metadata_do(check_class); |
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1838 } |
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1839 }; |
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1840 |
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1841 // This is called during a safepoint so can use static data |
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1842 BoolObjectClosure* CheckClass::_is_alive = NULL; |
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1843 #endif // ASSERT |
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1844 |
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1845 |
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1846 // Processing of oop references should have been sufficient to keep |
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1847 // all strong references alive. Any weak references should have been |
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1848 // cleared as well. Visit all the metadata and ensure that it's |
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1849 // really alive. |
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1850 void nmethod::verify_metadata_loaders(address low_boundary, BoolObjectClosure* is_alive) { |
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1851 #ifdef ASSERT |
0 | 1852 RelocIterator iter(this, low_boundary); |
1853 while (iter.next()) { | |
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1854 // static_stub_Relocations may have dangling references to |
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1855 // Method*s so trim them out here. Otherwise it looks like |
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1856 // compiled code is maintaining a link to dead metadata. |
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1857 address static_call_addr = NULL; |
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1858 if (iter.type() == relocInfo::opt_virtual_call_type) { |
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1859 CompiledIC* cic = CompiledIC_at(iter.reloc()); |
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1860 if (!cic->is_call_to_interpreted()) { |
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1861 static_call_addr = iter.addr(); |
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1862 } |
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1863 } else if (iter.type() == relocInfo::static_call_type) { |
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1864 CompiledStaticCall* csc = compiledStaticCall_at(iter.reloc()); |
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1865 if (!csc->is_call_to_interpreted()) { |
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1866 static_call_addr = iter.addr(); |
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1867 } |
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1868 } |
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1869 if (static_call_addr != NULL) { |
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1870 RelocIterator sciter(this, low_boundary); |
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1871 while (sciter.next()) { |
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1872 if (sciter.type() == relocInfo::static_stub_type && |
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1873 sciter.static_stub_reloc()->static_call() == static_call_addr) { |
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1874 sciter.static_stub_reloc()->clear_inline_cache(); |
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1875 } |
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1876 } |
0 | 1877 } |
1878 } | |
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1879 // Check that the metadata embedded in the nmethod is alive |
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1880 CheckClass::do_check_class(is_alive, this); |
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1881 #endif |
0 | 1882 } |
1883 | |
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1884 |
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1885 // Iterate over metadata calling this function. Used by RedefineClasses |
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1886 void nmethod::metadata_do(void f(Metadata*)) { |
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1887 address low_boundary = verified_entry_point(); |
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1888 if (is_not_entrant()) { |
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1889 low_boundary += NativeJump::instruction_size; |
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1890 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. |
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1891 // (See comment above.) |
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1892 } |
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1893 { |
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1894 // Visit all immediate references that are embedded in the instruction stream. |
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1895 RelocIterator iter(this, low_boundary); |
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1896 while (iter.next()) { |
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1897 if (iter.type() == relocInfo::metadata_type ) { |
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1898 metadata_Relocation* r = iter.metadata_reloc(); |
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1899 // In this lmetadata, we must only follow those metadatas directly embedded in |
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1900 // the code. Other metadatas (oop_index>0) are seen as part of |
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1901 // the metadata section below. |
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1902 assert(1 == (r->metadata_is_immediate()) + |
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1903 (r->metadata_addr() >= metadata_begin() && r->metadata_addr() < metadata_end()), |
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1904 "metadata must be found in exactly one place"); |
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1905 if (r->metadata_is_immediate() && r->metadata_value() != NULL) { |
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1906 Metadata* md = r->metadata_value(); |
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1907 f(md); |
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1908 } |
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1909 } else if (iter.type() == relocInfo::virtual_call_type) { |
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1910 // Check compiledIC holders associated with this nmethod |
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1911 CompiledIC *ic = CompiledIC_at(iter.reloc()); |
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1912 if (ic->is_icholder_call()) { |
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1913 CompiledICHolder* cichk = ic->cached_icholder(); |
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1914 f(cichk->holder_method()); |
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1915 f(cichk->holder_klass()); |
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1916 } else { |
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1917 Metadata* ic_oop = ic->cached_metadata(); |
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1918 if (ic_oop != NULL) { |
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1919 f(ic_oop); |
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1920 } |
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1921 } |
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1922 } |
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1923 } |
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1924 } |
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1925 |
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1926 // Visit the metadata section |
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1927 for (Metadata** p = metadata_begin(); p < metadata_end(); p++) { |
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1928 if (*p == Universe::non_oop_word() || *p == NULL) continue; // skip non-oops |
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1929 Metadata* md = *p; |
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1930 f(md); |
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1931 } |
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1932 |
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1933 // Call function Method*, not embedded in these other places. |
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1934 if (_method != NULL) f(_method); |
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1935 } |
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1936 |
12080 | 1937 void nmethod::oops_do(OopClosure* f, bool allow_zombie) { |
0 | 1938 // make sure the oops ready to receive visitors |
12080 | 1939 assert(allow_zombie || !is_zombie(), "should not call follow on zombie nmethod"); |
1940 assert(!is_unloaded(), "should not call follow on unloaded nmethod"); | |
0 | 1941 |
1942 // If the method is not entrant or zombie then a JMP is plastered over the | |
1943 // first few bytes. If an oop in the old code was there, that oop | |
1944 // should not get GC'd. Skip the first few bytes of oops on | |
1945 // not-entrant methods. | |
1946 address low_boundary = verified_entry_point(); | |
1947 if (is_not_entrant()) { | |
1948 low_boundary += NativeJump::instruction_size; | |
1949 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
1950 // (See comment above.) | |
1951 } | |
1952 | |
9707 | 1953 #ifdef GRAAL |
1954 if (_graal_installed_code != NULL) { | |
1955 f->do_oop((oop*) &_graal_installed_code); | |
1956 } | |
1957 if (_triggered_deoptimizations != NULL) { | |
1958 f->do_oop((oop*) &_triggered_deoptimizations); | |
1959 } | |
1960 #endif | |
1961 | |
0 | 1962 RelocIterator iter(this, low_boundary); |
941 | 1963 |
0 | 1964 while (iter.next()) { |
1965 if (iter.type() == relocInfo::oop_type ) { | |
1966 oop_Relocation* r = iter.oop_reloc(); | |
1967 // In this loop, we must only follow those oops directly embedded in | |
1968 // the code. Other oops (oop_index>0) are seen as part of scopes_oops. | |
941 | 1969 assert(1 == (r->oop_is_immediate()) + |
1970 (r->oop_addr() >= oops_begin() && r->oop_addr() < oops_end()), | |
1971 "oop must be found in exactly one place"); | |
0 | 1972 if (r->oop_is_immediate() && r->oop_value() != NULL) { |
1973 f->do_oop(r->oop_addr()); | |
1974 } | |
1975 } | |
1976 } | |
1977 | |
1978 // Scopes | |
989
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1979 // This includes oop constants not inlined in the code stream. |
0 | 1980 for (oop* p = oops_begin(); p < oops_end(); p++) { |
1981 if (*p == Universe::non_oop_word()) continue; // skip non-oops | |
1982 f->do_oop(p); | |
1983 } | |
1984 } | |
1985 | |
989
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1986 #define NMETHOD_SENTINEL ((nmethod*)badAddress) |
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1987 |
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1988 nmethod* volatile nmethod::_oops_do_mark_nmethods; |
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1989 |
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1990 // An nmethod is "marked" if its _mark_link is set non-null. |
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1991 // Even if it is the end of the linked list, it will have a non-null link value, |
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1992 // as long as it is on the list. |
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1993 // This code must be MP safe, because it is used from parallel GC passes. |
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1994 bool nmethod::test_set_oops_do_mark() { |
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1995 assert(nmethod::oops_do_marking_is_active(), "oops_do_marking_prologue must be called"); |
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1996 nmethod* observed_mark_link = _oops_do_mark_link; |
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1997 if (observed_mark_link == NULL) { |
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1998 // Claim this nmethod for this thread to mark. |
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1999 observed_mark_link = (nmethod*) |
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2000 Atomic::cmpxchg_ptr(NMETHOD_SENTINEL, &_oops_do_mark_link, NULL); |
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2001 if (observed_mark_link == NULL) { |
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2002 |
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2003 // Atomically append this nmethod (now claimed) to the head of the list: |
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2004 nmethod* observed_mark_nmethods = _oops_do_mark_nmethods; |
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2005 for (;;) { |
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2006 nmethod* required_mark_nmethods = observed_mark_nmethods; |
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2007 _oops_do_mark_link = required_mark_nmethods; |
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2008 observed_mark_nmethods = (nmethod*) |
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2009 Atomic::cmpxchg_ptr(this, &_oops_do_mark_nmethods, required_mark_nmethods); |
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2010 if (observed_mark_nmethods == required_mark_nmethods) |
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2011 break; |
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2012 } |
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2013 // Mark was clear when we first saw this guy. |
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2014 NOT_PRODUCT(if (TraceScavenge) print_on(tty, "oops_do, mark")); |
989
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2015 return false; |
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2016 } |
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2017 } |
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2018 // On fall through, another racing thread marked this nmethod before we did. |
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2019 return true; |
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2020 } |
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2021 |
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2022 void nmethod::oops_do_marking_prologue() { |
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2023 NOT_PRODUCT(if (TraceScavenge) tty->print_cr("[oops_do_marking_prologue")); |
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2024 assert(_oops_do_mark_nmethods == NULL, "must not call oops_do_marking_prologue twice in a row"); |
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2025 // We use cmpxchg_ptr instead of regular assignment here because the user |
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2026 // may fork a bunch of threads, and we need them all to see the same state. |
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2027 void* observed = Atomic::cmpxchg_ptr(NMETHOD_SENTINEL, &_oops_do_mark_nmethods, NULL); |
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2028 guarantee(observed == NULL, "no races in this sequential code"); |
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2029 } |
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2030 |
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2031 void nmethod::oops_do_marking_epilogue() { |
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2032 assert(_oops_do_mark_nmethods != NULL, "must not call oops_do_marking_epilogue twice in a row"); |
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2033 nmethod* cur = _oops_do_mark_nmethods; |
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2034 while (cur != NMETHOD_SENTINEL) { |
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2035 assert(cur != NULL, "not NULL-terminated"); |
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2036 nmethod* next = cur->_oops_do_mark_link; |
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2037 cur->_oops_do_mark_link = NULL; |
2375
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2038 cur->fix_oop_relocations(); |
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2039 NOT_PRODUCT(if (TraceScavenge) cur->print_on(tty, "oops_do, unmark")); |
989
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2040 cur = next; |
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2041 } |
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2042 void* required = _oops_do_mark_nmethods; |
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2043 void* observed = Atomic::cmpxchg_ptr(NULL, &_oops_do_mark_nmethods, required); |
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2044 guarantee(observed == required, "no races in this sequential code"); |
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2045 NOT_PRODUCT(if (TraceScavenge) tty->print_cr("oops_do_marking_epilogue]")); |
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2046 } |
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2047 |
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2048 class DetectScavengeRoot: public OopClosure { |
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2049 bool _detected_scavenge_root; |
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2050 public: |
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2051 DetectScavengeRoot() : _detected_scavenge_root(false) |
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2052 { NOT_PRODUCT(_print_nm = NULL); } |
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2053 bool detected_scavenge_root() { return _detected_scavenge_root; } |
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2054 virtual void do_oop(oop* p) { |
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2055 if ((*p) != NULL && (*p)->is_scavengable()) { |
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2056 NOT_PRODUCT(maybe_print(p)); |
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2057 _detected_scavenge_root = true; |
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2058 } |
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2059 } |
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2060 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
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2061 |
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2062 #ifndef PRODUCT |
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2063 nmethod* _print_nm; |
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2064 void maybe_print(oop* p) { |
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2065 if (_print_nm == NULL) return; |
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2066 if (!_detected_scavenge_root) _print_nm->print_on(tty, "new scavenge root"); |
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2067 tty->print_cr(""PTR_FORMAT"[offset=%d] detected scavengable oop "PTR_FORMAT" (found at "PTR_FORMAT")", |
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2068 _print_nm, (int)((intptr_t)p - (intptr_t)_print_nm), |
12316
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2069 (void *)(*p), (intptr_t)p); |
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2070 (*p)->print(); |
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2071 } |
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2072 #endif //PRODUCT |
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2073 }; |
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2074 |
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2075 bool nmethod::detect_scavenge_root_oops() { |
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2076 DetectScavengeRoot detect_scavenge_root; |
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2077 NOT_PRODUCT(if (TraceScavenge) detect_scavenge_root._print_nm = this); |
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2078 oops_do(&detect_scavenge_root); |
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2079 return detect_scavenge_root.detected_scavenge_root(); |
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2080 } |
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2081 |
0 | 2082 // Method that knows how to preserve outgoing arguments at call. This method must be |
2083 // called with a frame corresponding to a Java invoke | |
2084 void nmethod::preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { | |
1692 | 2085 #ifndef SHARK |
0 | 2086 if (!method()->is_native()) { |
2087 SimpleScopeDesc ssd(this, fr.pc()); | |
2142 | 2088 Bytecode_invoke call(ssd.method(), ssd.bci()); |
10390 | 2089 bool has_receiver = call.has_receiver(); |
2090 bool has_appendix = call.has_appendix(); | |
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2091 Symbol* signature = call.signature(); |
10390 | 2092 fr.oops_compiled_arguments_do(signature, has_receiver, has_appendix, reg_map, f); |
0 | 2093 } |
1692 | 2094 #endif // !SHARK |
0 | 2095 } |
2096 | |
2097 | |
2098 oop nmethod::embeddedOop_at(u_char* p) { | |
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2099 RelocIterator iter(this, p, p + 1); |
0 | 2100 while (iter.next()) |
2101 if (iter.type() == relocInfo::oop_type) { | |
2102 return iter.oop_reloc()->oop_value(); | |
2103 } | |
2104 return NULL; | |
2105 } | |
2106 | |
2107 | |
2108 inline bool includes(void* p, void* from, void* to) { | |
2109 return from <= p && p < to; | |
2110 } | |
2111 | |
2112 | |
2113 void nmethod::copy_scopes_pcs(PcDesc* pcs, int count) { | |
2114 assert(count >= 2, "must be sentinel values, at least"); | |
2115 | |
2116 #ifdef ASSERT | |
2117 // must be sorted and unique; we do a binary search in find_pc_desc() | |
2118 int prev_offset = pcs[0].pc_offset(); | |
2119 assert(prev_offset == PcDesc::lower_offset_limit, | |
2120 "must start with a sentinel"); | |
2121 for (int i = 1; i < count; i++) { | |
2122 int this_offset = pcs[i].pc_offset(); | |
2123 assert(this_offset > prev_offset, "offsets must be sorted"); | |
2124 prev_offset = this_offset; | |
2125 } | |
2126 assert(prev_offset == PcDesc::upper_offset_limit, | |
2127 "must end with a sentinel"); | |
2128 #endif //ASSERT | |
2129 | |
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2130 // Search for MethodHandle invokes and tag the nmethod. |
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2131 for (int i = 0; i < count; i++) { |
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2132 if (pcs[i].is_method_handle_invoke()) { |
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2133 set_has_method_handle_invokes(true); |
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2134 break; |
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2135 } |
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2136 } |
2083
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2137 assert(has_method_handle_invokes() == (_deoptimize_mh_offset != -1), "must have deopt mh handler"); |
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2138 |
0 | 2139 int size = count * sizeof(PcDesc); |
2140 assert(scopes_pcs_size() >= size, "oob"); | |
2141 memcpy(scopes_pcs_begin(), pcs, size); | |
2142 | |
2143 // Adjust the final sentinel downward. | |
2144 PcDesc* last_pc = &scopes_pcs_begin()[count-1]; | |
2145 assert(last_pc->pc_offset() == PcDesc::upper_offset_limit, "sanity"); | |
1748 | 2146 last_pc->set_pc_offset(content_size() + 1); |
0 | 2147 for (; last_pc + 1 < scopes_pcs_end(); last_pc += 1) { |
2148 // Fill any rounding gaps with copies of the last record. | |
2149 last_pc[1] = last_pc[0]; | |
2150 } | |
2151 // The following assert could fail if sizeof(PcDesc) is not | |
2152 // an integral multiple of oopSize (the rounding term). | |
2153 // If it fails, change the logic to always allocate a multiple | |
2154 // of sizeof(PcDesc), and fill unused words with copies of *last_pc. | |
2155 assert(last_pc + 1 == scopes_pcs_end(), "must match exactly"); | |
2156 } | |
2157 | |
2158 void nmethod::copy_scopes_data(u_char* buffer, int size) { | |
2159 assert(scopes_data_size() >= size, "oob"); | |
2160 memcpy(scopes_data_begin(), buffer, size); | |
2161 } | |
2162 | |
2163 | |
2164 #ifdef ASSERT | |
2165 static PcDesc* linear_search(nmethod* nm, int pc_offset, bool approximate) { | |
2166 PcDesc* lower = nm->scopes_pcs_begin(); | |
2167 PcDesc* upper = nm->scopes_pcs_end(); | |
2168 lower += 1; // exclude initial sentinel | |
2169 PcDesc* res = NULL; | |
2170 for (PcDesc* p = lower; p < upper; p++) { | |
2171 NOT_PRODUCT(--nmethod_stats.pc_desc_tests); // don't count this call to match_desc | |
2172 if (match_desc(p, pc_offset, approximate)) { | |
2173 if (res == NULL) | |
2174 res = p; | |
2175 else | |
2176 res = (PcDesc*) badAddress; | |
2177 } | |
2178 } | |
2179 return res; | |
2180 } | |
2181 #endif | |
2182 | |
2183 | |
2184 // Finds a PcDesc with real-pc equal to "pc" | |
2185 PcDesc* nmethod::find_pc_desc_internal(address pc, bool approximate) { | |
1748 | 2186 address base_address = code_begin(); |
0 | 2187 if ((pc < base_address) || |
2188 (pc - base_address) >= (ptrdiff_t) PcDesc::upper_offset_limit) { | |
2189 return NULL; // PC is wildly out of range | |
2190 } | |
2191 int pc_offset = (int) (pc - base_address); | |
2192 | |
2193 // Check the PcDesc cache if it contains the desired PcDesc | |
2194 // (This as an almost 100% hit rate.) | |
2195 PcDesc* res = _pc_desc_cache.find_pc_desc(pc_offset, approximate); | |
2196 if (res != NULL) { | |
2197 assert(res == linear_search(this, pc_offset, approximate), "cache ok"); | |
2198 return res; | |
2199 } | |
2200 | |
2201 // Fallback algorithm: quasi-linear search for the PcDesc | |
2202 // Find the last pc_offset less than the given offset. | |
2203 // The successor must be the required match, if there is a match at all. | |
2204 // (Use a fixed radix to avoid expensive affine pointer arithmetic.) | |
2205 PcDesc* lower = scopes_pcs_begin(); | |
2206 PcDesc* upper = scopes_pcs_end(); | |
2207 upper -= 1; // exclude final sentinel | |
2208 if (lower >= upper) return NULL; // native method; no PcDescs at all | |
2209 | |
2210 #define assert_LU_OK \ | |
2211 /* invariant on lower..upper during the following search: */ \ | |
2212 assert(lower->pc_offset() < pc_offset, "sanity"); \ | |
2213 assert(upper->pc_offset() >= pc_offset, "sanity") | |
2214 assert_LU_OK; | |
2215 | |
2216 // Use the last successful return as a split point. | |
2217 PcDesc* mid = _pc_desc_cache.last_pc_desc(); | |
2218 NOT_PRODUCT(++nmethod_stats.pc_desc_searches); | |
2219 if (mid->pc_offset() < pc_offset) { | |
2220 lower = mid; | |
2221 } else { | |
2222 upper = mid; | |
2223 } | |
2224 | |
2225 // Take giant steps at first (4096, then 256, then 16, then 1) | |
2226 const int LOG2_RADIX = 4 /*smaller steps in debug mode:*/ debug_only(-1); | |
2227 const int RADIX = (1 << LOG2_RADIX); | |
2228 for (int step = (1 << (LOG2_RADIX*3)); step > 1; step >>= LOG2_RADIX) { | |
2229 while ((mid = lower + step) < upper) { | |
2230 assert_LU_OK; | |
2231 NOT_PRODUCT(++nmethod_stats.pc_desc_searches); | |
2232 if (mid->pc_offset() < pc_offset) { | |
2233 lower = mid; | |
2234 } else { | |
2235 upper = mid; | |
2236 break; | |
2237 } | |
2238 } | |
2239 assert_LU_OK; | |
2240 } | |
2241 | |
2242 // Sneak up on the value with a linear search of length ~16. | |
2243 while (true) { | |
2244 assert_LU_OK; | |
2245 mid = lower + 1; | |
2246 NOT_PRODUCT(++nmethod_stats.pc_desc_searches); | |
2247 if (mid->pc_offset() < pc_offset) { | |
2248 lower = mid; | |
2249 } else { | |
2250 upper = mid; | |
2251 break; | |
2252 } | |
2253 } | |
2254 #undef assert_LU_OK | |
2255 | |
2256 if (match_desc(upper, pc_offset, approximate)) { | |
2257 assert(upper == linear_search(this, pc_offset, approximate), "search ok"); | |
2258 _pc_desc_cache.add_pc_desc(upper); | |
2259 return upper; | |
2260 } else { | |
2261 assert(NULL == linear_search(this, pc_offset, approximate), "search ok"); | |
2262 return NULL; | |
2263 } | |
2264 } | |
2265 | |
2266 | |
2267 bool nmethod::check_all_dependencies() { | |
2268 bool found_check = false; | |
2269 // wholesale check of all dependencies | |
2270 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
2271 if (deps.check_dependency() != NULL) { | |
2272 found_check = true; | |
2273 NOT_DEBUG(break); | |
2274 } | |
2275 } | |
2276 return found_check; // tell caller if we found anything | |
2277 } | |
2278 | |
2279 bool nmethod::check_dependency_on(DepChange& changes) { | |
2280 // What has happened: | |
2281 // 1) a new class dependee has been added | |
2282 // 2) dependee and all its super classes have been marked | |
2283 bool found_check = false; // set true if we are upset | |
2284 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
2285 // Evaluate only relevant dependencies. | |
2286 if (deps.spot_check_dependency_at(changes) != NULL) { | |
2287 found_check = true; | |
2288 NOT_DEBUG(break); | |
2289 } | |
2290 } | |
2291 return found_check; | |
2292 } | |
2293 | |
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2294 bool nmethod::is_evol_dependent_on(Klass* dependee) { |
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2295 InstanceKlass *dependee_ik = InstanceKlass::cast(dependee); |
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2296 Array<Method*>* dependee_methods = dependee_ik->methods(); |
0 | 2297 for (Dependencies::DepStream deps(this); deps.next(); ) { |
2298 if (deps.type() == Dependencies::evol_method) { | |
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2299 Method* method = deps.method_argument(0); |
0 | 2300 for (int j = 0; j < dependee_methods->length(); j++) { |
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2301 if (dependee_methods->at(j) == method) { |
0 | 2302 // RC_TRACE macro has an embedded ResourceMark |
2303 RC_TRACE(0x01000000, | |
2304 ("Found evol dependency of nmethod %s.%s(%s) compile_id=%d on method %s.%s(%s)", | |
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2305 _method->method_holder()->external_name(), |
0 | 2306 _method->name()->as_C_string(), |
2307 _method->signature()->as_C_string(), compile_id(), | |
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2308 method->method_holder()->external_name(), |
0 | 2309 method->name()->as_C_string(), |
2310 method->signature()->as_C_string())); | |
2311 if (TraceDependencies || LogCompilation) | |
2312 deps.log_dependency(dependee); | |
2313 return true; | |
2314 } | |
2315 } | |
2316 } | |
2317 } | |
2318 return false; | |
2319 } | |
2320 | |
2321 // Called from mark_for_deoptimization, when dependee is invalidated. | |
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2322 bool nmethod::is_dependent_on_method(Method* dependee) { |
0 | 2323 for (Dependencies::DepStream deps(this); deps.next(); ) { |
2324 if (deps.type() != Dependencies::evol_method) | |
2325 continue; | |
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2326 Method* method = deps.method_argument(0); |
0 | 2327 if (method == dependee) return true; |
2328 } | |
2329 return false; | |
2330 } | |
2331 | |
2332 | |
2333 bool nmethod::is_patchable_at(address instr_addr) { | |
1748 | 2334 assert(insts_contains(instr_addr), "wrong nmethod used"); |
0 | 2335 if (is_zombie()) { |
2336 // a zombie may never be patched | |
2337 return false; | |
2338 } | |
2339 return true; | |
2340 } | |
2341 | |
2342 | |
2343 address nmethod::continuation_for_implicit_exception(address pc) { | |
2344 // Exception happened outside inline-cache check code => we are inside | |
2345 // an active nmethod => use cpc to determine a return address | |
1748 | 2346 int exception_offset = pc - code_begin(); |
0 | 2347 int cont_offset = ImplicitExceptionTable(this).at( exception_offset ); |
2348 #ifdef ASSERT | |
2349 if (cont_offset == 0) { | |
2350 Thread* thread = ThreadLocalStorage::get_thread_slow(); | |
2351 ResetNoHandleMark rnm; // Might be called from LEAF/QUICK ENTRY | |
2352 HandleMark hm(thread); | |
2353 ResourceMark rm(thread); | |
2354 CodeBlob* cb = CodeCache::find_blob(pc); | |
2355 assert(cb != NULL && cb == this, ""); | |
2356 tty->print_cr("implicit exception happened at " INTPTR_FORMAT, pc); | |
2357 print(); | |
2358 method()->print_codes(); | |
2359 print_code(); | |
2360 print_pcs(); | |
2361 } | |
2362 #endif | |
1250 | 2363 if (cont_offset == 0) { |
2364 // Let the normal error handling report the exception | |
2365 return NULL; | |
2366 } | |
1748 | 2367 return code_begin() + cont_offset; |
0 | 2368 } |
2369 | |
2370 | |
2371 | |
2372 void nmethod_init() { | |
2373 // make sure you didn't forget to adjust the filler fields | |
2374 assert(sizeof(nmethod) % oopSize == 0, "nmethod size must be multiple of a word"); | |
2375 } | |
2376 | |
2377 | |
2378 //------------------------------------------------------------------------------------------- | |
2379 | |
2380 | |
2381 // QQQ might we make this work from a frame?? | |
2382 nmethodLocker::nmethodLocker(address pc) { | |
2383 CodeBlob* cb = CodeCache::find_blob(pc); | |
2384 guarantee(cb != NULL && cb->is_nmethod(), "bad pc for a nmethod found"); | |
2385 _nm = (nmethod*)cb; | |
2386 lock_nmethod(_nm); | |
2387 } | |
2388 | |
2342
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2389 // Only JvmtiDeferredEvent::compiled_method_unload_event() |
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2390 // should pass zombie_ok == true. |
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2391 void nmethodLocker::lock_nmethod(nmethod* nm, bool zombie_ok) { |
0 | 2392 if (nm == NULL) return; |
2393 Atomic::inc(&nm->_lock_count); | |
2342
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2394 guarantee(zombie_ok || !nm->is_zombie(), "cannot lock a zombie method"); |
0 | 2395 } |
2396 | |
2397 void nmethodLocker::unlock_nmethod(nmethod* nm) { | |
2398 if (nm == NULL) return; | |
2399 Atomic::dec(&nm->_lock_count); | |
2400 guarantee(nm->_lock_count >= 0, "unmatched nmethod lock/unlock"); | |
2401 } | |
2402 | |
1204 | 2403 |
2404 // ----------------------------------------------------------------------------- | |
2405 // nmethod::get_deopt_original_pc | |
2406 // | |
2407 // Return the original PC for the given PC if: | |
2408 // (a) the given PC belongs to a nmethod and | |
2409 // (b) it is a deopt PC | |
2410 address nmethod::get_deopt_original_pc(const frame* fr) { | |
2411 if (fr->cb() == NULL) return NULL; | |
2412 | |
2413 nmethod* nm = fr->cb()->as_nmethod_or_null(); | |
2414 if (nm != NULL && nm->is_deopt_pc(fr->pc())) | |
2415 return nm->get_original_pc(fr); | |
2416 | |
2417 return NULL; | |
0 | 2418 } |
2419 | |
2420 | |
2421 // ----------------------------------------------------------------------------- | |
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2422 // MethodHandle |
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2423 |
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2424 bool nmethod::is_method_handle_return(address return_pc) { |
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2425 if (!has_method_handle_invokes()) return false; |
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2426 PcDesc* pd = pc_desc_at(return_pc); |
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2427 if (pd == NULL) |
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2428 return false; |
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2429 return pd->is_method_handle_invoke(); |
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2430 } |
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2431 |
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2432 |
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2433 // ----------------------------------------------------------------------------- |
0 | 2434 // Verification |
2435 | |
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2436 class VerifyOopsClosure: public OopClosure { |
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2437 nmethod* _nm; |
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2438 bool _ok; |
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2439 public: |
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2440 VerifyOopsClosure(nmethod* nm) : _nm(nm), _ok(true) { } |
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2441 bool ok() { return _ok; } |
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2442 virtual void do_oop(oop* p) { |
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2443 if ((*p) == NULL || (*p)->is_oop()) return; |
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2444 if (_ok) { |
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2445 _nm->print_nmethod(true); |
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2446 _ok = false; |
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2447 } |
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2448 tty->print_cr("*** non-oop "PTR_FORMAT" found at "PTR_FORMAT" (offset %d)", |
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2449 (void *)(*p), (intptr_t)p, (int)((intptr_t)p - (intptr_t)_nm)); |
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2450 } |
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2451 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
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|
2452 }; |
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2453 |
0 | 2454 void nmethod::verify() { |
2455 | |
2456 // Hmm. OSR methods can be deopted but not marked as zombie or not_entrant | |
2457 // seems odd. | |
2458 | |
2459 if( is_zombie() || is_not_entrant() ) | |
2460 return; | |
2461 | |
2462 // Make sure all the entry points are correctly aligned for patching. | |
2463 NativeJump::check_verified_entry_alignment(entry_point(), verified_entry_point()); | |
2464 | |
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2465 // assert(method()->is_oop(), "must be valid"); |
0 | 2466 |
2467 ResourceMark rm; | |
2468 | |
2469 if (!CodeCache::contains(this)) { | |
1490
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|
2470 fatal(err_msg("nmethod at " INTPTR_FORMAT " not in zone", this)); |
0 | 2471 } |
2472 | |
2473 if(is_native_method() ) | |
2474 return; | |
2475 | |
2476 nmethod* nm = CodeCache::find_nmethod(verified_entry_point()); | |
2477 if (nm != this) { | |
1490
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|
2478 fatal(err_msg("findNMethod did not find this nmethod (" INTPTR_FORMAT ")", |
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2479 this)); |
0 | 2480 } |
2481 | |
2482 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
2483 if (! p->verify(this)) { | |
2484 tty->print_cr("\t\tin nmethod at " INTPTR_FORMAT " (pcs)", this); | |
2485 } | |
2486 } | |
2487 | |
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2488 VerifyOopsClosure voc(this); |
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|
2489 oops_do(&voc); |
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2490 assert(voc.ok(), "embedded oops must be OK"); |
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2491 verify_scavenge_root_oops(); |
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|
2492 |
0 | 2493 verify_scopes(); |
2494 } | |
2495 | |
2496 | |
2497 void nmethod::verify_interrupt_point(address call_site) { | |
2498 // This code does not work in release mode since | |
2499 // owns_lock only is available in debug mode. | |
2500 CompiledIC* ic = NULL; | |
2501 Thread *cur = Thread::current(); | |
2502 if (CompiledIC_lock->owner() == cur || | |
2503 ((cur->is_VM_thread() || cur->is_ConcurrentGC_thread()) && | |
2504 SafepointSynchronize::is_at_safepoint())) { | |
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2505 ic = CompiledIC_at(this, call_site); |
0 | 2506 CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops()); |
2507 } else { | |
2508 MutexLocker ml_verify (CompiledIC_lock); | |
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2509 ic = CompiledIC_at(this, call_site); |
0 | 2510 } |
2511 PcDesc* pd = pc_desc_at(ic->end_of_call()); | |
2512 assert(pd != NULL, "PcDesc must exist"); | |
2513 for (ScopeDesc* sd = new ScopeDesc(this, pd->scope_decode_offset(), | |
9707 | 2514 pd->obj_decode_offset(), pd->should_reexecute(), pd->rethrow_exception(), |
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changeset
|
2515 pd->return_oop()); |
0 | 2516 !sd->is_top(); sd = sd->sender()) { |
2517 sd->verify(); | |
2518 } | |
2519 } | |
2520 | |
2521 void nmethod::verify_scopes() { | |
2522 if( !method() ) return; // Runtime stubs have no scope | |
2523 if (method()->is_native()) return; // Ignore stub methods. | |
2524 // iterate through all interrupt point | |
2525 // and verify the debug information is valid. | |
2526 RelocIterator iter((nmethod*)this); | |
2527 while (iter.next()) { | |
2528 address stub = NULL; | |
2529 switch (iter.type()) { | |
2530 case relocInfo::virtual_call_type: | |
2531 verify_interrupt_point(iter.addr()); | |
2532 break; | |
2533 case relocInfo::opt_virtual_call_type: | |
2534 stub = iter.opt_virtual_call_reloc()->static_stub(); | |
2535 verify_interrupt_point(iter.addr()); | |
2536 break; | |
2537 case relocInfo::static_call_type: | |
2538 stub = iter.static_call_reloc()->static_stub(); | |
2539 //verify_interrupt_point(iter.addr()); | |
2540 break; | |
2541 case relocInfo::runtime_call_type: | |
2542 address destination = iter.reloc()->value(); | |
2543 // Right now there is no way to find out which entries support | |
2544 // an interrupt point. It would be nice if we had this | |
2545 // information in a table. | |
2546 break; | |
2547 } | |
2548 assert(stub == NULL || stub_contains(stub), "static call stub outside stub section"); | |
2549 } | |
2550 } | |
2551 | |
2552 | |
2553 // ----------------------------------------------------------------------------- | |
2554 // Non-product code | |
2555 #ifndef PRODUCT | |
2556 | |
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2557 class DebugScavengeRoot: public OopClosure { |
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2558 nmethod* _nm; |
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|
2559 bool _ok; |
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2560 public: |
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2561 DebugScavengeRoot(nmethod* nm) : _nm(nm), _ok(true) { } |
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2562 bool ok() { return _ok; } |
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2563 virtual void do_oop(oop* p) { |
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|
2564 if ((*p) == NULL || !(*p)->is_scavengable()) return; |
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|
2565 if (_ok) { |
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|
2566 _nm->print_nmethod(true); |
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2567 _ok = false; |
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|
2568 } |
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|
2569 tty->print_cr("*** scavengable oop "PTR_FORMAT" found at "PTR_FORMAT" (offset %d)", |
12316
190899198332
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changeset
|
2570 (void *)(*p), (intptr_t)p, (int)((intptr_t)p - (intptr_t)_nm)); |
989
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diff
changeset
|
2571 (*p)->print(); |
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|
2572 } |
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|
2573 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
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|
2574 }; |
0 | 2575 |
989
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|
2576 void nmethod::verify_scavenge_root_oops() { |
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|
2577 if (!on_scavenge_root_list()) { |
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|
2578 // Actually look inside, to verify the claim that it's clean. |
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|
2579 DebugScavengeRoot debug_scavenge_root(this); |
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2580 oops_do(&debug_scavenge_root); |
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|
2581 if (!debug_scavenge_root.ok()) |
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2582 fatal("found an unadvertised bad scavengable oop in the code cache"); |
0 | 2583 } |
989
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2584 assert(scavenge_root_not_marked(), ""); |
0 | 2585 } |
2586 | |
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|
2587 #endif // PRODUCT |
0 | 2588 |
2589 // Printing operations | |
2590 | |
2591 void nmethod::print() const { | |
2592 ResourceMark rm; | |
2593 ttyLocker ttyl; // keep the following output all in one block | |
2594 | |
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
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diff
changeset
|
2595 tty->print("Compiled method "); |
0 | 2596 |
2597 if (is_compiled_by_c1()) { | |
2598 tty->print("(c1) "); | |
2599 } else if (is_compiled_by_c2()) { | |
2600 tty->print("(c2) "); | |
1692 | 2601 } else if (is_compiled_by_shark()) { |
2602 tty->print("(shark) "); | |
9707 | 2603 } else if (is_compiled_by_graal()) { |
2604 tty->print("(Graal) "); | |
0 | 2605 } else { |
2606 tty->print("(nm) "); | |
2607 } | |
2608 | |
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
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2376
diff
changeset
|
2609 print_on(tty, NULL); |
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7022998: JSR 292 recursive method handle calls inline themselves infinitely
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diff
changeset
|
2610 |
0 | 2611 if (WizardMode) { |
2612 tty->print("((nmethod*) "INTPTR_FORMAT ") ", this); | |
2613 tty->print(" for method " INTPTR_FORMAT , (address)method()); | |
2614 tty->print(" { "); | |
2615 if (is_in_use()) tty->print("in_use "); | |
2616 if (is_not_entrant()) tty->print("not_entrant "); | |
2617 if (is_zombie()) tty->print("zombie "); | |
2618 if (is_unloaded()) tty->print("unloaded "); | |
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|
2619 if (on_scavenge_root_list()) tty->print("scavenge_root "); |
0 | 2620 tty->print_cr("}:"); |
2621 } | |
2622 if (size () > 0) tty->print_cr(" total in heap [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2623 (address)this, | |
2624 (address)this + size(), | |
2625 size()); | |
2626 if (relocation_size () > 0) tty->print_cr(" relocation [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2627 relocation_begin(), | |
2628 relocation_end(), | |
2629 relocation_size()); | |
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0878d7bae69f
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twisti
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1748
diff
changeset
|
2630 if (consts_size () > 0) tty->print_cr(" constants [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
2631 consts_begin(), |
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
2632 consts_end(), |
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
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diff
changeset
|
2633 consts_size()); |
1748 | 2634 if (insts_size () > 0) tty->print_cr(" main code [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
2635 insts_begin(), | |
2636 insts_end(), | |
2637 insts_size()); | |
0 | 2638 if (stub_size () > 0) tty->print_cr(" stub code [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
2639 stub_begin(), | |
2640 stub_end(), | |
2641 stub_size()); | |
1563
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
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1538
diff
changeset
|
2642 if (oops_size () > 0) tty->print_cr(" oops [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
1a5913bf5e19
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diff
changeset
|
2643 oops_begin(), |
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
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1538
diff
changeset
|
2644 oops_end(), |
1a5913bf5e19
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diff
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|
2645 oops_size()); |
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2646 if (metadata_size () > 0) tty->print_cr(" metadata [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
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|
2647 metadata_begin(), |
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|
2648 metadata_end(), |
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|
2649 metadata_size()); |
0 | 2650 if (scopes_data_size () > 0) tty->print_cr(" scopes data [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
2651 scopes_data_begin(), | |
2652 scopes_data_end(), | |
2653 scopes_data_size()); | |
2654 if (scopes_pcs_size () > 0) tty->print_cr(" scopes pcs [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2655 scopes_pcs_begin(), | |
2656 scopes_pcs_end(), | |
2657 scopes_pcs_size()); | |
2658 if (dependencies_size () > 0) tty->print_cr(" dependencies [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2659 dependencies_begin(), | |
2660 dependencies_end(), | |
2661 dependencies_size()); | |
2662 if (handler_table_size() > 0) tty->print_cr(" handler table [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2663 handler_table_begin(), | |
2664 handler_table_end(), | |
2665 handler_table_size()); | |
2666 if (nul_chk_table_size() > 0) tty->print_cr(" nul chk table [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2667 nul_chk_table_begin(), | |
2668 nul_chk_table_end(), | |
2669 nul_chk_table_size()); | |
2670 } | |
2671 | |
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|
2672 void nmethod::print_code() { |
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changeset
|
2673 HandleMark hm; |
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|
2674 ResourceMark m; |
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diff
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|
2675 Disassembler::decode(this); |
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diff
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|
2676 } |
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|
2677 |
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|
2678 |
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|
2679 #ifndef PRODUCT |
0 | 2680 |
2681 void nmethod::print_scopes() { | |
2682 // Find the first pc desc for all scopes in the code and print it. | |
2683 ResourceMark rm; | |
2684 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
2685 if (p->scope_decode_offset() == DebugInformationRecorder::serialized_null) | |
2686 continue; | |
2687 | |
2688 ScopeDesc* sd = scope_desc_at(p->real_pc(this)); | |
2689 sd->print_on(tty, p); | |
2690 } | |
2691 } | |
2692 | |
2693 void nmethod::print_dependencies() { | |
2694 ResourceMark rm; | |
2695 ttyLocker ttyl; // keep the following output all in one block | |
2696 tty->print_cr("Dependencies:"); | |
2697 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
2698 deps.print_dependency(); | |
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2699 Klass* ctxk = deps.context_type(); |
0 | 2700 if (ctxk != NULL) { |
6983 | 2701 if (ctxk->oop_is_instance() && ((InstanceKlass*)ctxk)->is_dependent_nmethod(this)) { |
2702 tty->print_cr(" [nmethod<=klass]%s", ctxk->external_name()); | |
0 | 2703 } |
2704 } | |
2705 deps.log_dependency(); // put it into the xml log also | |
2706 } | |
2707 } | |
2708 | |
2709 | |
2710 void nmethod::print_relocations() { | |
2711 ResourceMark m; // in case methods get printed via the debugger | |
2712 tty->print_cr("relocations:"); | |
2713 RelocIterator iter(this); | |
2714 iter.print(); | |
2715 if (UseRelocIndex) { | |
2716 jint* index_end = (jint*)relocation_end() - 1; | |
2717 jint index_size = *index_end; | |
2718 jint* index_start = (jint*)( (address)index_end - index_size ); | |
2719 tty->print_cr(" index @" INTPTR_FORMAT ": index_size=%d", index_start, index_size); | |
2720 if (index_size > 0) { | |
2721 jint* ip; | |
2722 for (ip = index_start; ip+2 <= index_end; ip += 2) | |
2723 tty->print_cr(" (%d %d) addr=" INTPTR_FORMAT " @" INTPTR_FORMAT, | |
2724 ip[0], | |
2725 ip[1], | |
2726 header_end()+ip[0], | |
2727 relocation_begin()-1+ip[1]); | |
2728 for (; ip < index_end; ip++) | |
2729 tty->print_cr(" (%d ?)", ip[0]); | |
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|
2730 tty->print_cr(" @" INTPTR_FORMAT ": index_size=%d", ip, *ip); |
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|
2731 ip++; |
0 | 2732 tty->print_cr("reloc_end @" INTPTR_FORMAT ":", ip); |
2733 } | |
2734 } | |
2735 } | |
2736 | |
2737 | |
2738 void nmethod::print_pcs() { | |
2739 ResourceMark m; // in case methods get printed via debugger | |
2740 tty->print_cr("pc-bytecode offsets:"); | |
2741 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
2742 p->print(this); | |
2743 } | |
2744 } | |
2745 | |
100
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6667042: PrintAssembly option does not work without special plugin
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30
diff
changeset
|
2746 #endif // PRODUCT |
0 | 2747 |
2748 const char* nmethod::reloc_string_for(u_char* begin, u_char* end) { | |
2749 RelocIterator iter(this, begin, end); | |
2750 bool have_one = false; | |
2751 while (iter.next()) { | |
2752 have_one = true; | |
2753 switch (iter.type()) { | |
2754 case relocInfo::none: return "no_reloc"; | |
2755 case relocInfo::oop_type: { | |
2756 stringStream st; | |
2757 oop_Relocation* r = iter.oop_reloc(); | |
2758 oop obj = r->oop_value(); | |
2759 st.print("oop("); | |
2760 if (obj == NULL) st.print("NULL"); | |
2761 else obj->print_value_on(&st); | |
2762 st.print(")"); | |
2763 return st.as_string(); | |
2764 } | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2765 case relocInfo::metadata_type: { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2766 stringStream st; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6266
diff
changeset
|
2767 metadata_Relocation* r = iter.metadata_reloc(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6266
diff
changeset
|
2768 Metadata* obj = r->metadata_value(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2769 st.print("metadata("); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2770 if (obj == NULL) st.print("NULL"); |
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6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
2771 else obj->print_value_on(&st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2772 st.print(")"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2773 return st.as_string(); |
da91efe96a93
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diff
changeset
|
2774 } |
0 | 2775 case relocInfo::virtual_call_type: return "virtual_call"; |
2776 case relocInfo::opt_virtual_call_type: return "optimized virtual_call"; | |
2777 case relocInfo::static_call_type: return "static_call"; | |
2778 case relocInfo::static_stub_type: return "static_stub"; | |
2779 case relocInfo::runtime_call_type: return "runtime_call"; | |
2780 case relocInfo::external_word_type: return "external_word"; | |
2781 case relocInfo::internal_word_type: return "internal_word"; | |
2782 case relocInfo::section_word_type: return "section_word"; | |
2783 case relocInfo::poll_type: return "poll"; | |
2784 case relocInfo::poll_return_type: return "poll_return"; | |
2785 case relocInfo::type_mask: return "type_bit_mask"; | |
2786 } | |
2787 } | |
2788 return have_one ? "other" : NULL; | |
2789 } | |
2790 | |
2791 // Return a the last scope in (begin..end] | |
2792 ScopeDesc* nmethod::scope_desc_in(address begin, address end) { | |
2793 PcDesc* p = pc_desc_near(begin+1); | |
2794 if (p != NULL && p->real_pc(this) <= end) { | |
2795 return new ScopeDesc(this, p->scope_decode_offset(), | |
9707 | 2796 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
|
2797 p->return_oop()); |
0 | 2798 } |
2799 return NULL; | |
2800 } | |
2801 | |
6796
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
parents:
6792
diff
changeset
|
2802 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
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diff
changeset
|
2803 if (block_begin == entry_point()) stream->print_cr("[Entry Point]"); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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1141
diff
changeset
|
2804 if (block_begin == verified_entry_point()) stream->print_cr("[Verified Entry Point]"); |
9707 | 2805 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
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1141
diff
changeset
|
2806 if (block_begin == stub_begin()) stream->print_cr("[Stub Code]"); |
9707 | 2807 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
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parents:
1644
diff
changeset
|
2808 |
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
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parents:
1644
diff
changeset
|
2809 if (has_method_handle_invokes()) |
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
twisti
parents:
1644
diff
changeset
|
2810 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
|
2811 |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
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1141
diff
changeset
|
2812 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
|
2813 |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2814 if (block_begin == entry_point()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2815 methodHandle m = method(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2816 if (m.not_null()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2817 stream->print(" # "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2818 m->print_value_on(stream); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2819 stream->cr(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2820 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2821 if (m.not_null() && !is_osr_method()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2822 ResourceMark rm; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2823 int sizeargs = m->size_of_parameters(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2824 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
|
2825 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, sizeargs); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2826 { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2827 int sig_index = 0; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2828 if (!m->is_static()) |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2829 sig_bt[sig_index++] = T_OBJECT; // 'this' |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2830 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
|
2831 BasicType t = ss.type(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2832 sig_bt[sig_index++] = t; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2833 if (type2size[t] == 2) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2834 sig_bt[sig_index++] = T_VOID; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2835 } else { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2836 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
|
2837 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2838 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2839 assert(sig_index == sizeargs, ""); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2840 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2841 const char* spname = "sp"; // make arch-specific? |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2842 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
|
2843 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
|
2844 int tab1 = 14, tab2 = 24; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2845 int sig_index = 0; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2846 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
|
2847 bool did_old_sp = false; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2848 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
|
2849 bool at_this = (arg_index == -1); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2850 bool at_old_sp = false; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2851 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
|
2852 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
|
2853 if (at_this) |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2854 stream->print(" # this: "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2855 else |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2856 stream->print(" # parm%d: ", arg_index); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2857 stream->move_to(tab1); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2858 VMReg fst = regs[sig_index].first(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2859 VMReg snd = regs[sig_index].second(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2860 if (fst->is_reg()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2861 stream->print("%s", fst->name()); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2862 if (snd->is_valid()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2863 stream->print(":%s", snd->name()); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2864 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2865 } else if (fst->is_stack()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2866 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
|
2867 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
|
2868 stream->print("[%s+0x%x]", spname, offset); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2869 } else { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2870 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
|
2871 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2872 stream->print(" "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2873 stream->move_to(tab2); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2874 stream->print("= "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2875 if (at_this) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2876 m->method_holder()->print_value_on(stream); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2877 } else { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2878 bool did_name = false; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2879 if (!at_this && ss.is_object()) { |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2142
diff
changeset
|
2880 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
|
2881 if (name != NULL) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2882 name->print_value_on(stream); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2883 did_name = true; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2884 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2885 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2886 if (!did_name) |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2887 stream->print("%s", type2name(t)); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2888 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2889 if (at_old_sp) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2890 stream->print(" (%s of caller)", spname); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2891 did_old_sp = true; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2892 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2893 stream->cr(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2894 sig_index += type2size[t]; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2895 arg_index += 1; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2896 if (!at_this) ss.next(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2897 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2898 if (!did_old_sp) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2899 stream->print(" # "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2900 stream->move_to(tab1); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2901 stream->print("[%s+0x%x]", spname, stack_slot_offset); |
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2902 stream->print(" (%s of caller)", spname); |
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2903 stream->cr(); |
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2904 } |
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2905 } |
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2906 } |
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2907 } |
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2908 |
0 | 2909 void nmethod::print_code_comment_on(outputStream* st, int column, u_char* begin, u_char* end) { |
2910 // First, find an oopmap in (begin, end]. | |
2911 // We use the odd half-closed interval so that oop maps and scope descs | |
2912 // which are tied to the byte after a call are printed with the call itself. | |
1748 | 2913 address base = code_begin(); |
0 | 2914 OopMapSet* oms = oop_maps(); |
2915 if (oms != NULL) { | |
2916 for (int i = 0, imax = oms->size(); i < imax; i++) { | |
2917 OopMap* om = oms->at(i); | |
2918 address pc = base + om->offset(); | |
2919 if (pc > begin) { | |
2920 if (pc <= end) { | |
100
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2921 st->move_to(column); |
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2922 st->print("; "); |
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2923 om->print_on(st); |
0 | 2924 } |
2925 break; | |
2926 } | |
2927 } | |
2928 } | |
100
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2929 |
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2930 // Print any debug info present at this pc. |
0 | 2931 ScopeDesc* sd = scope_desc_in(begin, end); |
2932 if (sd != NULL) { | |
100
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2933 st->move_to(column); |
0 | 2934 if (sd->bci() == SynchronizationEntryBCI) { |
2935 st->print(";*synchronization entry"); | |
2936 } else { | |
6725
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2937 if (sd->method() == NULL) { |
100
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2938 st->print("method is NULL"); |
0 | 2939 } else if (sd->method()->is_native()) { |
100
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2940 st->print("method is native"); |
0 | 2941 } else { |
2142 | 2942 Bytecodes::Code bc = sd->method()->java_code_at(sd->bci()); |
0 | 2943 st->print(";*%s", Bytecodes::name(bc)); |
2944 switch (bc) { | |
2945 case Bytecodes::_invokevirtual: | |
2946 case Bytecodes::_invokespecial: | |
2947 case Bytecodes::_invokestatic: | |
2948 case Bytecodes::_invokeinterface: | |
2949 { | |
2142 | 2950 Bytecode_invoke invoke(sd->method(), sd->bci()); |
0 | 2951 st->print(" "); |
2142 | 2952 if (invoke.name() != NULL) |
2953 invoke.name()->print_symbol_on(st); | |
0 | 2954 else |
2955 st->print("<UNKNOWN>"); | |
2956 break; | |
2957 } | |
2958 case Bytecodes::_getfield: | |
2959 case Bytecodes::_putfield: | |
2960 case Bytecodes::_getstatic: | |
2961 case Bytecodes::_putstatic: | |
2962 { | |
2142 | 2963 Bytecode_field field(sd->method(), sd->bci()); |
0 | 2964 st->print(" "); |
2142 | 2965 if (field.name() != NULL) |
2966 field.name()->print_symbol_on(st); | |
0 | 2967 else |
2968 st->print("<UNKNOWN>"); | |
2969 } | |
2970 } | |
2971 } | |
2972 } | |
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2973 |
0 | 2974 // Print all scopes |
2975 for (;sd != NULL; sd = sd->sender()) { | |
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2976 st->move_to(column); |
0 | 2977 st->print("; -"); |
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2978 if (sd->method() == NULL) { |
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2979 st->print("method is NULL"); |
0 | 2980 } else { |
2981 sd->method()->print_short_name(st); | |
2982 } | |
2983 int lineno = sd->method()->line_number_from_bci(sd->bci()); | |
2984 if (lineno != -1) { | |
2985 st->print("@%d (line %d)", sd->bci(), lineno); | |
2986 } else { | |
2987 st->print("@%d", sd->bci()); | |
2988 } | |
2989 st->cr(); | |
2990 } | |
2991 } | |
2992 | |
2993 // Print relocation information | |
2994 const char* str = reloc_string_for(begin, end); | |
2995 if (str != NULL) { | |
2996 if (sd != NULL) st->cr(); | |
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2997 st->move_to(column); |
0 | 2998 st->print("; {%s}", str); |
2999 } | |
1748 | 3000 int cont_offset = ImplicitExceptionTable(this).at(begin - code_begin()); |
0 | 3001 if (cont_offset != 0) { |
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3002 st->move_to(column); |
1748 | 3003 st->print("; implicit exception: dispatches to " INTPTR_FORMAT, code_begin() + cont_offset); |
0 | 3004 } |
3005 | |
3006 } | |
3007 | |
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3008 #ifndef PRODUCT |
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3009 |
0 | 3010 void nmethod::print_value_on(outputStream* st) const { |
2405
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3011 st->print("nmethod"); |
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3012 print_on(st, NULL); |
0 | 3013 } |
3014 | |
3015 void nmethod::print_calls(outputStream* st) { | |
3016 RelocIterator iter(this); | |
3017 while (iter.next()) { | |
3018 switch (iter.type()) { | |
3019 case relocInfo::virtual_call_type: | |
3020 case relocInfo::opt_virtual_call_type: { | |
3021 VerifyMutexLocker mc(CompiledIC_lock); | |
3022 CompiledIC_at(iter.reloc())->print(); | |
3023 break; | |
3024 } | |
3025 case relocInfo::static_call_type: | |
3026 st->print_cr("Static call at " INTPTR_FORMAT, iter.reloc()->addr()); | |
3027 compiledStaticCall_at(iter.reloc())->print(); | |
3028 break; | |
3029 } | |
3030 } | |
3031 } | |
3032 | |
3033 void nmethod::print_handler_table() { | |
3034 ExceptionHandlerTable(this).print(); | |
3035 } | |
3036 | |
3037 void nmethod::print_nul_chk_table() { | |
1748 | 3038 ImplicitExceptionTable(this).print(code_begin()); |
0 | 3039 } |
3040 | |
9707 | 3041 #endif // PRODUCT |
3042 | |
0 | 3043 void nmethod::print_statistics() { |
3044 ttyLocker ttyl; | |
3045 if (xtty != NULL) xtty->head("statistics type='nmethod'"); | |
3046 nmethod_stats.print_native_nmethod_stats(); | |
3047 nmethod_stats.print_nmethod_stats(); | |
3048 DebugInformationRecorder::print_statistics(); | |
3049 nmethod_stats.print_pc_stats(); | |
3050 Dependencies::print_statistics(); | |
3051 if (xtty != NULL) xtty->tail("statistics"); | |
3052 } |