Mercurial > hg > truffle
annotate src/share/vm/code/nmethod.cpp @ 14517:3812c088b945
Merge
author | lana |
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date | Thu, 06 Mar 2014 10:37:26 -0800 |
parents | b3fe59626fdc |
children | d8041d695d19 3c6ae9109a86 |
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 | |
0 | 48 |
49 #ifdef DTRACE_ENABLED | |
50 | |
51 // Only bother with this argument setup if dtrace is available | |
52 | |
4006 | 53 #define DTRACE_METHOD_UNLOAD_PROBE(method) \ |
54 { \ | |
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55 Method* m = (method); \ |
4006 | 56 if (m != NULL) { \ |
57 Symbol* klass_name = m->klass_name(); \ | |
58 Symbol* name = m->name(); \ | |
59 Symbol* signature = m->signature(); \ | |
60 HOTSPOT_COMPILED_METHOD_UNLOAD( \ | |
61 (char *) klass_name->bytes(), klass_name->utf8_length(), \ | |
62 (char *) name->bytes(), name->utf8_length(), \ | |
63 (char *) signature->bytes(), signature->utf8_length()); \ | |
64 } \ | |
65 } | |
0 | 66 |
67 #else // ndef DTRACE_ENABLED | |
68 | |
69 #define DTRACE_METHOD_UNLOAD_PROBE(method) | |
70 | |
71 #endif | |
72 | |
73 bool nmethod::is_compiled_by_c1() const { | |
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74 if (compiler() == NULL) { |
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75 return false; |
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76 } |
0 | 77 return compiler()->is_c1(); |
78 } | |
79 bool nmethod::is_compiled_by_c2() const { | |
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80 if (compiler() == NULL) { |
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81 return false; |
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82 } |
0 | 83 return compiler()->is_c2(); |
84 } | |
1692 | 85 bool nmethod::is_compiled_by_shark() const { |
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86 if (compiler() == NULL) { |
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87 return false; |
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88 } |
1692 | 89 return compiler()->is_shark(); |
90 } | |
0 | 91 |
92 | |
93 | |
94 //--------------------------------------------------------------------------------- | |
95 // NMethod statistics | |
96 // They are printed under various flags, including: | |
97 // PrintC1Statistics, PrintOptoStatistics, LogVMOutput, and LogCompilation. | |
98 // (In the latter two cases, they like other stats are printed to the log only.) | |
99 | |
100 #ifndef PRODUCT | |
101 // These variables are put into one block to reduce relocations | |
102 // and make it simpler to print from the debugger. | |
103 static | |
104 struct nmethod_stats_struct { | |
105 int nmethod_count; | |
106 int total_size; | |
107 int relocation_size; | |
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108 int consts_size; |
1748 | 109 int insts_size; |
0 | 110 int stub_size; |
111 int scopes_data_size; | |
112 int scopes_pcs_size; | |
113 int dependencies_size; | |
114 int handler_table_size; | |
115 int nul_chk_table_size; | |
116 int oops_size; | |
117 | |
118 void note_nmethod(nmethod* nm) { | |
119 nmethod_count += 1; | |
120 total_size += nm->size(); | |
121 relocation_size += nm->relocation_size(); | |
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122 consts_size += nm->consts_size(); |
1748 | 123 insts_size += nm->insts_size(); |
0 | 124 stub_size += nm->stub_size(); |
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125 oops_size += nm->oops_size(); |
0 | 126 scopes_data_size += nm->scopes_data_size(); |
127 scopes_pcs_size += nm->scopes_pcs_size(); | |
128 dependencies_size += nm->dependencies_size(); | |
129 handler_table_size += nm->handler_table_size(); | |
130 nul_chk_table_size += nm->nul_chk_table_size(); | |
131 } | |
132 void print_nmethod_stats() { | |
133 if (nmethod_count == 0) return; | |
134 tty->print_cr("Statistics for %d bytecoded nmethods:", nmethod_count); | |
135 if (total_size != 0) tty->print_cr(" total in heap = %d", total_size); | |
136 if (relocation_size != 0) tty->print_cr(" relocation = %d", relocation_size); | |
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137 if (consts_size != 0) tty->print_cr(" constants = %d", consts_size); |
1748 | 138 if (insts_size != 0) tty->print_cr(" main code = %d", insts_size); |
0 | 139 if (stub_size != 0) tty->print_cr(" stub code = %d", stub_size); |
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140 if (oops_size != 0) tty->print_cr(" oops = %d", oops_size); |
0 | 141 if (scopes_data_size != 0) tty->print_cr(" scopes data = %d", scopes_data_size); |
142 if (scopes_pcs_size != 0) tty->print_cr(" scopes pcs = %d", scopes_pcs_size); | |
143 if (dependencies_size != 0) tty->print_cr(" dependencies = %d", dependencies_size); | |
144 if (handler_table_size != 0) tty->print_cr(" handler table = %d", handler_table_size); | |
145 if (nul_chk_table_size != 0) tty->print_cr(" nul chk table = %d", nul_chk_table_size); | |
146 } | |
147 | |
148 int native_nmethod_count; | |
149 int native_total_size; | |
150 int native_relocation_size; | |
1748 | 151 int native_insts_size; |
0 | 152 int native_oops_size; |
153 void note_native_nmethod(nmethod* nm) { | |
154 native_nmethod_count += 1; | |
155 native_total_size += nm->size(); | |
156 native_relocation_size += nm->relocation_size(); | |
1748 | 157 native_insts_size += nm->insts_size(); |
0 | 158 native_oops_size += nm->oops_size(); |
159 } | |
160 void print_native_nmethod_stats() { | |
161 if (native_nmethod_count == 0) return; | |
162 tty->print_cr("Statistics for %d native nmethods:", native_nmethod_count); | |
163 if (native_total_size != 0) tty->print_cr(" N. total size = %d", native_total_size); | |
164 if (native_relocation_size != 0) tty->print_cr(" N. relocation = %d", native_relocation_size); | |
1748 | 165 if (native_insts_size != 0) tty->print_cr(" N. main code = %d", native_insts_size); |
0 | 166 if (native_oops_size != 0) tty->print_cr(" N. oops = %d", native_oops_size); |
167 } | |
168 | |
169 int pc_desc_resets; // number of resets (= number of caches) | |
170 int pc_desc_queries; // queries to nmethod::find_pc_desc | |
171 int pc_desc_approx; // number of those which have approximate true | |
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172 int pc_desc_repeats; // number of _pc_descs[0] hits |
0 | 173 int pc_desc_hits; // number of LRU cache hits |
174 int pc_desc_tests; // total number of PcDesc examinations | |
175 int pc_desc_searches; // total number of quasi-binary search steps | |
176 int pc_desc_adds; // number of LUR cache insertions | |
177 | |
178 void print_pc_stats() { | |
179 tty->print_cr("PcDesc Statistics: %d queries, %.2f comparisons per query", | |
180 pc_desc_queries, | |
181 (double)(pc_desc_tests + pc_desc_searches) | |
182 / pc_desc_queries); | |
183 tty->print_cr(" caches=%d queries=%d/%d, hits=%d+%d, tests=%d+%d, adds=%d", | |
184 pc_desc_resets, | |
185 pc_desc_queries, pc_desc_approx, | |
186 pc_desc_repeats, pc_desc_hits, | |
187 pc_desc_tests, pc_desc_searches, pc_desc_adds); | |
188 } | |
189 } nmethod_stats; | |
190 #endif //PRODUCT | |
191 | |
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192 |
0 | 193 //--------------------------------------------------------------------------------- |
194 | |
195 | |
196 ExceptionCache::ExceptionCache(Handle exception, address pc, address handler) { | |
197 assert(pc != NULL, "Must be non null"); | |
198 assert(exception.not_null(), "Must be non null"); | |
199 assert(handler != NULL, "Must be non null"); | |
200 | |
201 _count = 0; | |
202 _exception_type = exception->klass(); | |
203 _next = NULL; | |
204 | |
205 add_address_and_handler(pc,handler); | |
206 } | |
207 | |
208 | |
209 address ExceptionCache::match(Handle exception, address pc) { | |
210 assert(pc != NULL,"Must be non null"); | |
211 assert(exception.not_null(),"Must be non null"); | |
212 if (exception->klass() == exception_type()) { | |
213 return (test_address(pc)); | |
214 } | |
215 | |
216 return NULL; | |
217 } | |
218 | |
219 | |
220 bool ExceptionCache::match_exception_with_space(Handle exception) { | |
221 assert(exception.not_null(),"Must be non null"); | |
222 if (exception->klass() == exception_type() && count() < cache_size) { | |
223 return true; | |
224 } | |
225 return false; | |
226 } | |
227 | |
228 | |
229 address ExceptionCache::test_address(address addr) { | |
230 for (int i=0; i<count(); i++) { | |
231 if (pc_at(i) == addr) { | |
232 return handler_at(i); | |
233 } | |
234 } | |
235 return NULL; | |
236 } | |
237 | |
238 | |
239 bool ExceptionCache::add_address_and_handler(address addr, address handler) { | |
240 if (test_address(addr) == handler) return true; | |
241 if (count() < cache_size) { | |
242 set_pc_at(count(),addr); | |
243 set_handler_at(count(), handler); | |
244 increment_count(); | |
245 return true; | |
246 } | |
247 return false; | |
248 } | |
249 | |
250 | |
251 // private method for handling exception cache | |
252 // These methods are private, and used to manipulate the exception cache | |
253 // directly. | |
254 ExceptionCache* nmethod::exception_cache_entry_for_exception(Handle exception) { | |
255 ExceptionCache* ec = exception_cache(); | |
256 while (ec != NULL) { | |
257 if (ec->match_exception_with_space(exception)) { | |
258 return ec; | |
259 } | |
260 ec = ec->next(); | |
261 } | |
262 return NULL; | |
263 } | |
264 | |
265 | |
266 //----------------------------------------------------------------------------- | |
267 | |
268 | |
269 // Helper used by both find_pc_desc methods. | |
270 static inline bool match_desc(PcDesc* pc, int pc_offset, bool approximate) { | |
271 NOT_PRODUCT(++nmethod_stats.pc_desc_tests); | |
272 if (!approximate) | |
273 return pc->pc_offset() == pc_offset; | |
274 else | |
275 return (pc-1)->pc_offset() < pc_offset && pc_offset <= pc->pc_offset(); | |
276 } | |
277 | |
278 void PcDescCache::reset_to(PcDesc* initial_pc_desc) { | |
279 if (initial_pc_desc == NULL) { | |
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280 _pc_descs[0] = NULL; // native method; no PcDescs at all |
0 | 281 return; |
282 } | |
283 NOT_PRODUCT(++nmethod_stats.pc_desc_resets); | |
284 // reset the cache by filling it with benign (non-null) values | |
285 assert(initial_pc_desc->pc_offset() < 0, "must be sentinel"); | |
286 for (int i = 0; i < cache_size; i++) | |
287 _pc_descs[i] = initial_pc_desc; | |
288 } | |
289 | |
290 PcDesc* PcDescCache::find_pc_desc(int pc_offset, bool approximate) { | |
291 NOT_PRODUCT(++nmethod_stats.pc_desc_queries); | |
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292 NOT_PRODUCT(if (approximate) ++nmethod_stats.pc_desc_approx); |
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293 |
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294 // Note: one might think that caching the most recently |
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295 // read value separately would be a win, but one would be |
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296 // wrong. When many threads are updating it, the cache |
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297 // line it's in would bounce between caches, negating |
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298 // any benefit. |
0 | 299 |
300 // In order to prevent race conditions do not load cache elements | |
301 // repeatedly, but use a local copy: | |
302 PcDesc* res; | |
303 | |
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304 // Step one: Check the most recently added value. |
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305 res = _pc_descs[0]; |
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306 if (res == NULL) return NULL; // native method; no PcDescs at all |
0 | 307 if (match_desc(res, pc_offset, approximate)) { |
308 NOT_PRODUCT(++nmethod_stats.pc_desc_repeats); | |
309 return res; | |
310 } | |
311 | |
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312 // Step two: Check the rest of the LRU cache. |
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313 for (int i = 1; i < cache_size; ++i) { |
0 | 314 res = _pc_descs[i]; |
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315 if (res->pc_offset() < 0) break; // optimization: skip empty cache |
0 | 316 if (match_desc(res, pc_offset, approximate)) { |
317 NOT_PRODUCT(++nmethod_stats.pc_desc_hits); | |
318 return res; | |
319 } | |
320 } | |
321 | |
322 // Report failure. | |
323 return NULL; | |
324 } | |
325 | |
326 void PcDescCache::add_pc_desc(PcDesc* pc_desc) { | |
327 NOT_PRODUCT(++nmethod_stats.pc_desc_adds); | |
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328 // Update the LRU cache by shifting pc_desc forward. |
0 | 329 for (int i = 0; i < cache_size; i++) { |
330 PcDesc* next = _pc_descs[i]; | |
331 _pc_descs[i] = pc_desc; | |
332 pc_desc = next; | |
333 } | |
334 } | |
335 | |
336 // adjust pcs_size so that it is a multiple of both oopSize and | |
337 // sizeof(PcDesc) (assumes that if sizeof(PcDesc) is not a multiple | |
338 // of oopSize, then 2*sizeof(PcDesc) is) | |
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339 static int adjust_pcs_size(int pcs_size) { |
0 | 340 int nsize = round_to(pcs_size, oopSize); |
341 if ((nsize % sizeof(PcDesc)) != 0) { | |
342 nsize = pcs_size + sizeof(PcDesc); | |
343 } | |
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344 assert((nsize % oopSize) == 0, "correct alignment"); |
0 | 345 return nsize; |
346 } | |
347 | |
348 //----------------------------------------------------------------------------- | |
349 | |
350 | |
351 void nmethod::add_exception_cache_entry(ExceptionCache* new_entry) { | |
352 assert(ExceptionCache_lock->owned_by_self(),"Must hold the ExceptionCache_lock"); | |
353 assert(new_entry != NULL,"Must be non null"); | |
354 assert(new_entry->next() == NULL, "Must be null"); | |
355 | |
356 if (exception_cache() != NULL) { | |
357 new_entry->set_next(exception_cache()); | |
358 } | |
359 set_exception_cache(new_entry); | |
360 } | |
361 | |
362 void nmethod::remove_from_exception_cache(ExceptionCache* ec) { | |
363 ExceptionCache* prev = NULL; | |
364 ExceptionCache* curr = exception_cache(); | |
365 assert(curr != NULL, "nothing to remove"); | |
366 // find the previous and next entry of ec | |
367 while (curr != ec) { | |
368 prev = curr; | |
369 curr = curr->next(); | |
370 assert(curr != NULL, "ExceptionCache not found"); | |
371 } | |
372 // now: curr == ec | |
373 ExceptionCache* next = curr->next(); | |
374 if (prev == NULL) { | |
375 set_exception_cache(next); | |
376 } else { | |
377 prev->set_next(next); | |
378 } | |
379 delete curr; | |
380 } | |
381 | |
382 | |
383 // public method for accessing the exception cache | |
384 // These are the public access methods. | |
385 address nmethod::handler_for_exception_and_pc(Handle exception, address pc) { | |
386 // We never grab a lock to read the exception cache, so we may | |
387 // have false negatives. This is okay, as it can only happen during | |
388 // the first few exception lookups for a given nmethod. | |
389 ExceptionCache* ec = exception_cache(); | |
390 while (ec != NULL) { | |
391 address ret_val; | |
392 if ((ret_val = ec->match(exception,pc)) != NULL) { | |
393 return ret_val; | |
394 } | |
395 ec = ec->next(); | |
396 } | |
397 return NULL; | |
398 } | |
399 | |
400 | |
401 void nmethod::add_handler_for_exception_and_pc(Handle exception, address pc, address handler) { | |
402 // There are potential race conditions during exception cache updates, so we | |
403 // must own the ExceptionCache_lock before doing ANY modifications. Because | |
605 | 404 // we don't lock during reads, it is possible to have several threads attempt |
0 | 405 // to update the cache with the same data. We need to check for already inserted |
406 // copies of the current data before adding it. | |
407 | |
408 MutexLocker ml(ExceptionCache_lock); | |
409 ExceptionCache* target_entry = exception_cache_entry_for_exception(exception); | |
410 | |
411 if (target_entry == NULL || !target_entry->add_address_and_handler(pc,handler)) { | |
412 target_entry = new ExceptionCache(exception,pc,handler); | |
413 add_exception_cache_entry(target_entry); | |
414 } | |
415 } | |
416 | |
417 | |
418 //-------------end of code for ExceptionCache-------------- | |
419 | |
420 | |
421 int nmethod::total_size() const { | |
422 return | |
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423 consts_size() + |
1748 | 424 insts_size() + |
0 | 425 stub_size() + |
426 scopes_data_size() + | |
427 scopes_pcs_size() + | |
428 handler_table_size() + | |
429 nul_chk_table_size(); | |
430 } | |
431 | |
432 const char* nmethod::compile_kind() const { | |
433 if (is_osr_method()) return "osr"; | |
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434 if (method() != NULL && is_native_method()) return "c2n"; |
0 | 435 return NULL; |
436 } | |
437 | |
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438 // Fill in default values for various flag fields |
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439 void nmethod::init_defaults() { |
14212 | 440 _state = in_use; |
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441 _marked_for_reclamation = 0; |
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442 _has_flushed_dependencies = 0; |
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443 _has_unsafe_access = 0; |
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444 _has_method_handle_invokes = 0; |
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445 _lazy_critical_native = 0; |
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446 _has_wide_vectors = 0; |
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447 _marked_for_deoptimization = 0; |
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448 _lock_count = 0; |
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449 _stack_traversal_mark = 0; |
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450 _unload_reported = false; // jvmti state |
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451 |
1726 | 452 #ifdef ASSERT |
453 _oops_are_stale = false; | |
454 #endif | |
455 | |
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456 _oops_do_mark_link = NULL; |
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457 _jmethod_id = NULL; |
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458 _osr_link = NULL; |
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459 _scavenge_root_link = NULL; |
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460 _scavenge_root_state = 0; |
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461 _compiler = NULL; |
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462 |
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463 #ifdef HAVE_DTRACE_H |
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464 _trap_offset = 0; |
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465 #endif // def HAVE_DTRACE_H |
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466 } |
0 | 467 |
468 nmethod* nmethod::new_native_nmethod(methodHandle method, | |
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469 int compile_id, |
0 | 470 CodeBuffer *code_buffer, |
471 int vep_offset, | |
472 int frame_complete, | |
473 int frame_size, | |
474 ByteSize basic_lock_owner_sp_offset, | |
475 ByteSize basic_lock_sp_offset, | |
476 OopMapSet* oop_maps) { | |
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477 code_buffer->finalize_oop_references(method); |
0 | 478 // create nmethod |
479 nmethod* nm = NULL; | |
480 { | |
481 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
482 int native_nmethod_size = allocation_size(code_buffer, sizeof(nmethod)); | |
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483 CodeOffsets offsets; |
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484 offsets.set_value(CodeOffsets::Verified_Entry, vep_offset); |
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485 offsets.set_value(CodeOffsets::Frame_Complete, frame_complete); |
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486 nm = new (native_nmethod_size) nmethod(method(), native_nmethod_size, |
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487 compile_id, &offsets, |
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488 code_buffer, frame_size, |
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489 basic_lock_owner_sp_offset, |
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490 basic_lock_sp_offset, oop_maps); |
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491 NOT_PRODUCT(if (nm != NULL) nmethod_stats.note_native_nmethod(nm)); |
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492 if (PrintAssembly && nm != NULL) { |
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493 Disassembler::decode(nm); |
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494 } |
0 | 495 } |
496 // verify nmethod | |
497 debug_only(if (nm) nm->verify();) // might block | |
498 | |
499 if (nm != NULL) { | |
500 nm->log_new_nmethod(); | |
501 } | |
502 | |
503 return nm; | |
504 } | |
505 | |
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506 #ifdef HAVE_DTRACE_H |
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507 nmethod* nmethod::new_dtrace_nmethod(methodHandle method, |
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508 CodeBuffer *code_buffer, |
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509 int vep_offset, |
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510 int trap_offset, |
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511 int frame_complete, |
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512 int frame_size) { |
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513 code_buffer->finalize_oop_references(method); |
116
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514 // create nmethod |
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515 nmethod* nm = NULL; |
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516 { |
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517 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
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518 int nmethod_size = allocation_size(code_buffer, sizeof(nmethod)); |
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519 CodeOffsets offsets; |
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520 offsets.set_value(CodeOffsets::Verified_Entry, vep_offset); |
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521 offsets.set_value(CodeOffsets::Dtrace_trap, trap_offset); |
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522 offsets.set_value(CodeOffsets::Frame_Complete, frame_complete); |
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523 |
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524 nm = new (nmethod_size) nmethod(method(), nmethod_size, |
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525 &offsets, code_buffer, frame_size); |
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526 |
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527 NOT_PRODUCT(if (nm != NULL) nmethod_stats.note_nmethod(nm)); |
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528 if (PrintAssembly && nm != NULL) { |
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529 Disassembler::decode(nm); |
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530 } |
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531 } |
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532 // verify nmethod |
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533 debug_only(if (nm) nm->verify();) // might block |
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534 |
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535 if (nm != NULL) { |
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536 nm->log_new_nmethod(); |
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537 } |
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538 |
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539 return nm; |
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540 } |
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541 |
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542 #endif // def HAVE_DTRACE_H |
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543 |
0 | 544 nmethod* nmethod::new_nmethod(methodHandle method, |
545 int compile_id, | |
546 int entry_bci, | |
547 CodeOffsets* offsets, | |
548 int orig_pc_offset, | |
549 DebugInformationRecorder* debug_info, | |
550 Dependencies* dependencies, | |
551 CodeBuffer* code_buffer, int frame_size, | |
552 OopMapSet* oop_maps, | |
553 ExceptionHandlerTable* handler_table, | |
554 ImplicitExceptionTable* nul_chk_table, | |
555 AbstractCompiler* compiler, | |
556 int comp_level | |
557 ) | |
558 { | |
559 assert(debug_info->oop_recorder() == code_buffer->oop_recorder(), "shared OR"); | |
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560 code_buffer->finalize_oop_references(method); |
0 | 561 // create nmethod |
562 nmethod* nm = NULL; | |
563 { MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
564 int nmethod_size = | |
565 allocation_size(code_buffer, sizeof(nmethod)) | |
566 + adjust_pcs_size(debug_info->pcs_size()) | |
567 + round_to(dependencies->size_in_bytes() , oopSize) | |
568 + round_to(handler_table->size_in_bytes(), oopSize) | |
569 + round_to(nul_chk_table->size_in_bytes(), oopSize) | |
570 + round_to(debug_info->data_size() , oopSize); | |
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571 |
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572 nm = new (nmethod_size) |
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573 nmethod(method(), nmethod_size, compile_id, entry_bci, offsets, |
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574 orig_pc_offset, debug_info, dependencies, code_buffer, frame_size, |
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575 oop_maps, |
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576 handler_table, |
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577 nul_chk_table, |
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578 compiler, |
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579 comp_level); |
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580 |
0 | 581 if (nm != NULL) { |
582 // To make dependency checking during class loading fast, record | |
583 // the nmethod dependencies in the classes it is dependent on. | |
584 // This allows the dependency checking code to simply walk the | |
585 // class hierarchy above the loaded class, checking only nmethods | |
586 // which are dependent on those classes. The slow way is to | |
587 // check every nmethod for dependencies which makes it linear in | |
588 // the number of methods compiled. For applications with a lot | |
589 // classes the slow way is too slow. | |
590 for (Dependencies::DepStream deps(nm); deps.next(); ) { | |
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591 Klass* klass = deps.context_type(); |
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592 if (klass == NULL) { |
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593 continue; // ignore things like evol_method |
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594 } |
0 | 595 |
596 // record this nmethod as dependent on this klass | |
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597 InstanceKlass::cast(klass)->add_dependent_nmethod(nm); |
0 | 598 } |
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599 NOT_PRODUCT(nmethod_stats.note_nmethod(nm)); |
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600 if (PrintAssembly || CompilerOracle::has_option_string(method, "PrintAssembly")) { |
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601 Disassembler::decode(nm); |
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602 } |
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603 } |
0 | 604 } |
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605 // Do verification and logging outside CodeCache_lock. |
0 | 606 if (nm != NULL) { |
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607 // Safepoints in nmethod::verify aren't allowed because nm hasn't been installed yet. |
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608 DEBUG_ONLY(nm->verify();) |
0 | 609 nm->log_new_nmethod(); |
610 } | |
611 return nm; | |
612 } | |
613 | |
614 | |
615 // For native wrappers | |
616 nmethod::nmethod( | |
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617 Method* method, |
0 | 618 int nmethod_size, |
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619 int compile_id, |
0 | 620 CodeOffsets* offsets, |
621 CodeBuffer* code_buffer, | |
622 int frame_size, | |
623 ByteSize basic_lock_owner_sp_offset, | |
624 ByteSize basic_lock_sp_offset, | |
625 OopMapSet* oop_maps ) | |
626 : CodeBlob("native nmethod", code_buffer, sizeof(nmethod), | |
627 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, oop_maps), | |
2019 | 628 _native_receiver_sp_offset(basic_lock_owner_sp_offset), |
629 _native_basic_lock_sp_offset(basic_lock_sp_offset) | |
0 | 630 { |
631 { | |
632 debug_only(No_Safepoint_Verifier nsv;) | |
633 assert_locked_or_safepoint(CodeCache_lock); | |
634 | |
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635 init_defaults(); |
0 | 636 _method = method; |
637 _entry_bci = InvocationEntryBci; | |
638 // We have no exception handler or deopt handler make the | |
639 // values something that will never match a pc like the nmethod vtable entry | |
640 _exception_offset = 0; | |
641 _deoptimize_offset = 0; | |
1204 | 642 _deoptimize_mh_offset = 0; |
0 | 643 _orig_pc_offset = 0; |
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644 |
1748 | 645 _consts_offset = data_offset(); |
0 | 646 _stub_offset = data_offset(); |
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647 _oops_offset = data_offset(); |
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648 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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649 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
0 | 650 _scopes_pcs_offset = _scopes_data_offset; |
651 _dependencies_offset = _scopes_pcs_offset; | |
652 _handler_table_offset = _dependencies_offset; | |
653 _nul_chk_table_offset = _handler_table_offset; | |
654 _nmethod_end_offset = _nul_chk_table_offset; | |
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655 _compile_id = compile_id; |
0 | 656 _comp_level = CompLevel_none; |
1748 | 657 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
658 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
0 | 659 _osr_entry_point = NULL; |
660 _exception_cache = NULL; | |
661 _pc_desc_cache.reset_to(NULL); | |
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662 _hotness_counter = NMethodSweeper::hotness_counter_reset_val(); |
0 | 663 |
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664 code_buffer->copy_values_to(this); |
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665 if (ScavengeRootsInCode && detect_scavenge_root_oops()) { |
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666 CodeCache::add_scavenge_root_nmethod(this); |
12080 | 667 Universe::heap()->register_nmethod(this); |
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668 } |
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669 debug_only(verify_scavenge_root_oops()); |
0 | 670 CodeCache::commit(this); |
671 } | |
672 | |
673 if (PrintNativeNMethods || PrintDebugInfo || PrintRelocations || PrintDependencies) { | |
674 ttyLocker ttyl; // keep the following output all in one block | |
675 // This output goes directly to the tty, not the compiler log. | |
676 // To enable tools to match it up with the compilation activity, | |
677 // be sure to tag this tty output with the compile ID. | |
678 if (xtty != NULL) { | |
679 xtty->begin_head("print_native_nmethod"); | |
680 xtty->method(_method); | |
681 xtty->stamp(); | |
682 xtty->end_head(" address='" INTPTR_FORMAT "'", (intptr_t) this); | |
683 } | |
684 // print the header part first | |
685 print(); | |
686 // then print the requested information | |
687 if (PrintNativeNMethods) { | |
688 print_code(); | |
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689 if (oop_maps != NULL) { |
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690 oop_maps->print(); |
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691 } |
0 | 692 } |
693 if (PrintRelocations) { | |
694 print_relocations(); | |
695 } | |
696 if (xtty != NULL) { | |
697 xtty->tail("print_native_nmethod"); | |
698 } | |
699 } | |
700 } | |
701 | |
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702 // For dtrace wrappers |
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703 #ifdef HAVE_DTRACE_H |
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704 nmethod::nmethod( |
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705 Method* method, |
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706 int nmethod_size, |
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707 CodeOffsets* offsets, |
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708 CodeBuffer* code_buffer, |
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709 int frame_size) |
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710 : CodeBlob("dtrace nmethod", code_buffer, sizeof(nmethod), |
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711 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, NULL), |
2019 | 712 _native_receiver_sp_offset(in_ByteSize(-1)), |
713 _native_basic_lock_sp_offset(in_ByteSize(-1)) | |
116
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714 { |
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715 { |
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716 debug_only(No_Safepoint_Verifier nsv;) |
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717 assert_locked_or_safepoint(CodeCache_lock); |
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718 |
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719 init_defaults(); |
116
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720 _method = method; |
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721 _entry_bci = InvocationEntryBci; |
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722 // We have no exception handler or deopt handler make the |
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723 // values something that will never match a pc like the nmethod vtable entry |
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724 _exception_offset = 0; |
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725 _deoptimize_offset = 0; |
1204 | 726 _deoptimize_mh_offset = 0; |
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727 _unwind_handler_offset = -1; |
116
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728 _trap_offset = offsets->value(CodeOffsets::Dtrace_trap); |
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729 _orig_pc_offset = 0; |
1748 | 730 _consts_offset = data_offset(); |
116
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731 _stub_offset = data_offset(); |
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732 _oops_offset = data_offset(); |
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733 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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734 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
116
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735 _scopes_pcs_offset = _scopes_data_offset; |
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736 _dependencies_offset = _scopes_pcs_offset; |
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737 _handler_table_offset = _dependencies_offset; |
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738 _nul_chk_table_offset = _handler_table_offset; |
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739 _nmethod_end_offset = _nul_chk_table_offset; |
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740 _compile_id = 0; // default |
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741 _comp_level = CompLevel_none; |
1748 | 742 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
743 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
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744 _osr_entry_point = NULL; |
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745 _exception_cache = NULL; |
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746 _pc_desc_cache.reset_to(NULL); |
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747 _hotness_counter = NMethodSweeper::hotness_counter_reset_val(); |
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748 |
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749 code_buffer->copy_values_to(this); |
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750 debug_only(verify_scavenge_root_oops()); |
116
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751 CodeCache::commit(this); |
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752 } |
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753 |
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754 if (PrintNMethods || PrintDebugInfo || PrintRelocations || PrintDependencies) { |
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755 ttyLocker ttyl; // keep the following output all in one block |
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756 // This output goes directly to the tty, not the compiler log. |
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757 // To enable tools to match it up with the compilation activity, |
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758 // be sure to tag this tty output with the compile ID. |
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759 if (xtty != NULL) { |
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760 xtty->begin_head("print_dtrace_nmethod"); |
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761 xtty->method(_method); |
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762 xtty->stamp(); |
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763 xtty->end_head(" address='" INTPTR_FORMAT "'", (intptr_t) this); |
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764 } |
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765 // print the header part first |
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766 print(); |
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767 // then print the requested information |
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768 if (PrintNMethods) { |
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769 print_code(); |
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770 } |
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771 if (PrintRelocations) { |
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772 print_relocations(); |
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773 } |
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774 if (xtty != NULL) { |
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775 xtty->tail("print_dtrace_nmethod"); |
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776 } |
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777 } |
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778 } |
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779 #endif // def HAVE_DTRACE_H |
0 | 780 |
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781 void* nmethod::operator new(size_t size, int nmethod_size) throw() { |
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782 // Not critical, may return null if there is too little continuous memory |
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783 return CodeCache::allocate(nmethod_size); |
0 | 784 } |
785 | |
786 nmethod::nmethod( | |
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787 Method* method, |
0 | 788 int nmethod_size, |
789 int compile_id, | |
790 int entry_bci, | |
791 CodeOffsets* offsets, | |
792 int orig_pc_offset, | |
793 DebugInformationRecorder* debug_info, | |
794 Dependencies* dependencies, | |
795 CodeBuffer *code_buffer, | |
796 int frame_size, | |
797 OopMapSet* oop_maps, | |
798 ExceptionHandlerTable* handler_table, | |
799 ImplicitExceptionTable* nul_chk_table, | |
800 AbstractCompiler* compiler, | |
801 int comp_level | |
802 ) | |
803 : CodeBlob("nmethod", code_buffer, sizeof(nmethod), | |
804 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, oop_maps), | |
2019 | 805 _native_receiver_sp_offset(in_ByteSize(-1)), |
806 _native_basic_lock_sp_offset(in_ByteSize(-1)) | |
0 | 807 { |
808 assert(debug_info->oop_recorder() == code_buffer->oop_recorder(), "shared OR"); | |
809 { | |
810 debug_only(No_Safepoint_Verifier nsv;) | |
811 assert_locked_or_safepoint(CodeCache_lock); | |
812 | |
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813 init_defaults(); |
0 | 814 _method = method; |
1644
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815 _entry_bci = entry_bci; |
0 | 816 _compile_id = compile_id; |
817 _comp_level = comp_level; | |
818 _compiler = compiler; | |
819 _orig_pc_offset = orig_pc_offset; | |
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820 _hotness_counter = NMethodSweeper::hotness_counter_reset_val(); |
1748 | 821 |
822 // Section offsets | |
1762
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823 _consts_offset = content_offset() + code_buffer->total_offset_of(code_buffer->consts()); |
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824 _stub_offset = content_offset() + code_buffer->total_offset_of(code_buffer->stubs()); |
0 | 825 |
826 // Exception handler and deopt handler are in the stub section | |
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827 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must be set"); |
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828 assert(offsets->value(CodeOffsets::Deopt ) != -1, "must be set"); |
1748 | 829 _exception_offset = _stub_offset + offsets->value(CodeOffsets::Exceptions); |
830 _deoptimize_offset = _stub_offset + offsets->value(CodeOffsets::Deopt); | |
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831 if (offsets->value(CodeOffsets::DeoptMH) != -1) { |
1762
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832 _deoptimize_mh_offset = _stub_offset + offsets->value(CodeOffsets::DeoptMH); |
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833 } else { |
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834 _deoptimize_mh_offset = -1; |
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835 } |
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836 if (offsets->value(CodeOffsets::UnwindHandler) != -1) { |
1748 | 837 _unwind_handler_offset = code_offset() + offsets->value(CodeOffsets::UnwindHandler); |
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838 } else { |
1748 | 839 _unwind_handler_offset = -1; |
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840 } |
1748 | 841 |
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842 _oops_offset = data_offset(); |
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843 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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844 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
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845 |
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846 _scopes_pcs_offset = _scopes_data_offset + round_to(debug_info->data_size (), oopSize); |
0 | 847 _dependencies_offset = _scopes_pcs_offset + adjust_pcs_size(debug_info->pcs_size()); |
848 _handler_table_offset = _dependencies_offset + round_to(dependencies->size_in_bytes (), oopSize); | |
849 _nul_chk_table_offset = _handler_table_offset + round_to(handler_table->size_in_bytes(), oopSize); | |
850 _nmethod_end_offset = _nul_chk_table_offset + round_to(nul_chk_table->size_in_bytes(), oopSize); | |
851 | |
1748 | 852 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
853 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
854 _osr_entry_point = code_begin() + offsets->value(CodeOffsets::OSR_Entry); | |
0 | 855 _exception_cache = NULL; |
856 _pc_desc_cache.reset_to(scopes_pcs_begin()); | |
857 | |
858 // Copy contents of ScopeDescRecorder to nmethod | |
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859 code_buffer->copy_values_to(this); |
0 | 860 debug_info->copy_to(this); |
861 dependencies->copy_to(this); | |
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862 if (ScavengeRootsInCode && detect_scavenge_root_oops()) { |
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863 CodeCache::add_scavenge_root_nmethod(this); |
12080 | 864 Universe::heap()->register_nmethod(this); |
989
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865 } |
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866 debug_only(verify_scavenge_root_oops()); |
0 | 867 |
868 CodeCache::commit(this); | |
869 | |
870 // Copy contents of ExceptionHandlerTable to nmethod | |
871 handler_table->copy_to(this); | |
872 nul_chk_table->copy_to(this); | |
873 | |
874 // we use the information of entry points to find out if a method is | |
875 // static or non static | |
876 assert(compiler->is_c2() || | |
877 _method->is_static() == (entry_point() == _verified_entry_point), | |
878 " entry points must be same for static methods and vice versa"); | |
879 } | |
880 | |
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881 bool printnmethods = PrintNMethods |
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882 || CompilerOracle::should_print(_method) |
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883 || CompilerOracle::has_option_string(_method, "PrintNMethods"); |
0 | 884 if (printnmethods || PrintDebugInfo || PrintRelocations || PrintDependencies || PrintExceptionHandlers) { |
885 print_nmethod(printnmethods); | |
886 } | |
887 } | |
888 | |
889 | |
890 // Print a short set of xml attributes to identify this nmethod. The | |
891 // output should be embedded in some other element. | |
892 void nmethod::log_identity(xmlStream* log) const { | |
893 log->print(" compile_id='%d'", compile_id()); | |
894 const char* nm_kind = compile_kind(); | |
895 if (nm_kind != NULL) log->print(" compile_kind='%s'", nm_kind); | |
896 if (compiler() != NULL) { | |
897 log->print(" compiler='%s'", compiler()->name()); | |
898 } | |
1783 | 899 if (TieredCompilation) { |
900 log->print(" level='%d'", comp_level()); | |
901 } | |
0 | 902 } |
903 | |
904 | |
905 #define LOG_OFFSET(log, name) \ | |
906 if ((intptr_t)name##_end() - (intptr_t)name##_begin()) \ | |
907 log->print(" " XSTR(name) "_offset='%d'" , \ | |
908 (intptr_t)name##_begin() - (intptr_t)this) | |
909 | |
910 | |
911 void nmethod::log_new_nmethod() const { | |
912 if (LogCompilation && xtty != NULL) { | |
913 ttyLocker ttyl; | |
914 HandleMark hm; | |
915 xtty->begin_elem("nmethod"); | |
916 log_identity(xtty); | |
1748 | 917 xtty->print(" entry='" INTPTR_FORMAT "' size='%d'", code_begin(), size()); |
0 | 918 xtty->print(" address='" INTPTR_FORMAT "'", (intptr_t) this); |
919 | |
920 LOG_OFFSET(xtty, relocation); | |
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921 LOG_OFFSET(xtty, consts); |
1748 | 922 LOG_OFFSET(xtty, insts); |
0 | 923 LOG_OFFSET(xtty, stub); |
924 LOG_OFFSET(xtty, scopes_data); | |
925 LOG_OFFSET(xtty, scopes_pcs); | |
926 LOG_OFFSET(xtty, dependencies); | |
927 LOG_OFFSET(xtty, handler_table); | |
928 LOG_OFFSET(xtty, nul_chk_table); | |
929 LOG_OFFSET(xtty, oops); | |
930 | |
931 xtty->method(method()); | |
932 xtty->stamp(); | |
933 xtty->end_elem(); | |
934 } | |
935 } | |
936 | |
937 #undef LOG_OFFSET | |
938 | |
939 | |
940 // Print out more verbose output usually for a newly created nmethod. | |
2405
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941 void nmethod::print_on(outputStream* st, const char* msg) const { |
0 | 942 if (st != NULL) { |
943 ttyLocker ttyl; | |
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944 if (WizardMode) { |
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945 CompileTask::print_compilation(st, this, msg, /*short_form:*/ true); |
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946 st->print_cr(" (" INTPTR_FORMAT ")", this); |
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947 } else { |
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948 CompileTask::print_compilation(st, this, msg, /*short_form:*/ false); |
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949 } |
0 | 950 } |
951 } | |
952 | |
953 | |
954 void nmethod::print_nmethod(bool printmethod) { | |
955 ttyLocker ttyl; // keep the following output all in one block | |
956 if (xtty != NULL) { | |
957 xtty->begin_head("print_nmethod"); | |
958 xtty->stamp(); | |
959 xtty->end_head(); | |
960 } | |
961 // print the header part first | |
962 print(); | |
963 // then print the requested information | |
964 if (printmethod) { | |
965 print_code(); | |
966 print_pcs(); | |
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967 if (oop_maps()) { |
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968 oop_maps()->print(); |
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969 } |
0 | 970 } |
971 if (PrintDebugInfo) { | |
972 print_scopes(); | |
973 } | |
974 if (PrintRelocations) { | |
975 print_relocations(); | |
976 } | |
977 if (PrintDependencies) { | |
978 print_dependencies(); | |
979 } | |
980 if (PrintExceptionHandlers) { | |
981 print_handler_table(); | |
982 print_nul_chk_table(); | |
983 } | |
984 if (xtty != NULL) { | |
985 xtty->tail("print_nmethod"); | |
986 } | |
987 } | |
988 | |
989 | |
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990 // Promote one word from an assembly-time handle to a live embedded oop. |
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991 inline void nmethod::initialize_immediate_oop(oop* dest, jobject handle) { |
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992 if (handle == NULL || |
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993 // As a special case, IC oops are initialized to 1 or -1. |
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994 handle == (jobject) Universe::non_oop_word()) { |
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995 (*dest) = (oop) handle; |
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996 } else { |
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997 (*dest) = JNIHandles::resolve_non_null(handle); |
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998 } |
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999 } |
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1000 |
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1001 |
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1002 // Have to have the same name because it's called by a template |
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1003 void nmethod::copy_values(GrowableArray<jobject>* array) { |
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1004 int length = array->length(); |
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1005 assert((address)(oops_begin() + length) <= (address)oops_end(), "oops big enough"); |
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1006 oop* dest = oops_begin(); |
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1007 for (int index = 0 ; index < length; index++) { |
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1008 initialize_immediate_oop(&dest[index], array->at(index)); |
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1009 } |
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1010 |
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1011 // Now we can fix up all the oops in the code. We need to do this |
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1012 // in the code because the assembler uses jobjects as placeholders. |
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1013 // The code and relocations have already been initialized by the |
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1014 // CodeBlob constructor, so it is valid even at this early point to |
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1015 // iterate over relocations and patch the code. |
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1016 fix_oop_relocations(NULL, NULL, /*initialize_immediates=*/ true); |
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1017 } |
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1018 |
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1019 void nmethod::copy_values(GrowableArray<Metadata*>* array) { |
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1020 int length = array->length(); |
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1021 assert((address)(metadata_begin() + length) <= (address)metadata_end(), "big enough"); |
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1022 Metadata** dest = metadata_begin(); |
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1023 for (int index = 0 ; index < length; index++) { |
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1024 dest[index] = array->at(index); |
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1025 } |
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1026 } |
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1027 |
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1028 bool nmethod::is_at_poll_return(address pc) { |
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1029 RelocIterator iter(this, pc, pc+1); |
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1030 while (iter.next()) { |
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1031 if (iter.type() == relocInfo::poll_return_type) |
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1032 return true; |
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1033 } |
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1034 return false; |
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1035 } |
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1036 |
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1037 |
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1038 bool nmethod::is_at_poll_or_poll_return(address pc) { |
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1039 RelocIterator iter(this, pc, pc+1); |
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1040 while (iter.next()) { |
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1041 relocInfo::relocType t = iter.type(); |
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1042 if (t == relocInfo::poll_return_type || t == relocInfo::poll_type) |
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1043 return true; |
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1044 } |
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1045 return false; |
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1046 } |
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1047 |
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1048 |
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1049 void nmethod::fix_oop_relocations(address begin, address end, bool initialize_immediates) { |
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1050 // re-patch all oop-bearing instructions, just in case some oops moved |
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1051 RelocIterator iter(this, begin, end); |
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1052 while (iter.next()) { |
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1053 if (iter.type() == relocInfo::oop_type) { |
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1054 oop_Relocation* reloc = iter.oop_reloc(); |
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1055 if (initialize_immediates && reloc->oop_is_immediate()) { |
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1056 oop* dest = reloc->oop_addr(); |
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1057 initialize_immediate_oop(dest, (jobject) *dest); |
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1058 } |
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1059 // Refresh the oop-related bits of this instruction. |
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1060 reloc->fix_oop_relocation(); |
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1061 } else if (iter.type() == relocInfo::metadata_type) { |
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1062 metadata_Relocation* reloc = iter.metadata_reloc(); |
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1063 reloc->fix_metadata_relocation(); |
1563
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1064 } |
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1065 } |
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1066 } |
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1067 |
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1068 |
2375
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1069 void nmethod::verify_oop_relocations() { |
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1070 // Ensure sure that the code matches the current oop values |
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1071 RelocIterator iter(this, NULL, NULL); |
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1072 while (iter.next()) { |
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1073 if (iter.type() == relocInfo::oop_type) { |
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1074 oop_Relocation* reloc = iter.oop_reloc(); |
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1075 if (!reloc->oop_is_immediate()) { |
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1076 reloc->verify_oop_relocation(); |
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1077 } |
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|
1078 } |
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|
1079 } |
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|
1080 } |
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1081 |
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1082 |
0 | 1083 ScopeDesc* nmethod::scope_desc_at(address pc) { |
1084 PcDesc* pd = pc_desc_at(pc); | |
1085 guarantee(pd != NULL, "scope must be present"); | |
1086 return new ScopeDesc(this, pd->scope_decode_offset(), | |
1253
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1087 pd->obj_decode_offset(), pd->should_reexecute(), |
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|
1088 pd->return_oop()); |
0 | 1089 } |
1090 | |
1091 | |
1092 void nmethod::clear_inline_caches() { | |
1093 assert(SafepointSynchronize::is_at_safepoint(), "cleaning of IC's only allowed at safepoint"); | |
1094 if (is_zombie()) { | |
1095 return; | |
1096 } | |
1097 | |
1098 RelocIterator iter(this); | |
1099 while (iter.next()) { | |
1100 iter.reloc()->clear_inline_cache(); | |
1101 } | |
1102 } | |
1103 | |
1104 | |
1105 void nmethod::cleanup_inline_caches() { | |
1106 | |
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1107 assert_locked_or_safepoint(CompiledIC_lock); |
0 | 1108 |
1109 // If the method is not entrant or zombie then a JMP is plastered over the | |
1110 // first few bytes. If an oop in the old code was there, that oop | |
1111 // should not get GC'd. Skip the first few bytes of oops on | |
1112 // not-entrant methods. | |
1113 address low_boundary = verified_entry_point(); | |
1114 if (!is_in_use()) { | |
1115 low_boundary += NativeJump::instruction_size; | |
1116 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
1117 // This means that the low_boundary is going to be a little too high. | |
1118 // This shouldn't matter, since oops of non-entrant methods are never used. | |
1119 // In fact, why are we bothering to look at oops in a non-entrant method?? | |
1120 } | |
1121 | |
1122 // Find all calls in an nmethod, and clear the ones that points to zombie methods | |
1123 ResourceMark rm; | |
1124 RelocIterator iter(this, low_boundary); | |
1125 while(iter.next()) { | |
1126 switch(iter.type()) { | |
1127 case relocInfo::virtual_call_type: | |
1128 case relocInfo::opt_virtual_call_type: { | |
1129 CompiledIC *ic = CompiledIC_at(iter.reloc()); | |
1130 // Ok, to lookup references to zombies here | |
1131 CodeBlob *cb = CodeCache::find_blob_unsafe(ic->ic_destination()); | |
1132 if( cb != NULL && cb->is_nmethod() ) { | |
1133 nmethod* nm = (nmethod*)cb; | |
1134 // Clean inline caches pointing to both zombie and not_entrant methods | |
1202 | 1135 if (!nm->is_in_use() || (nm->method()->code() != nm)) ic->set_to_clean(); |
0 | 1136 } |
1137 break; | |
1138 } | |
1139 case relocInfo::static_call_type: { | |
1140 CompiledStaticCall *csc = compiledStaticCall_at(iter.reloc()); | |
1141 CodeBlob *cb = CodeCache::find_blob_unsafe(csc->destination()); | |
1142 if( cb != NULL && cb->is_nmethod() ) { | |
1143 nmethod* nm = (nmethod*)cb; | |
1144 // Clean inline caches pointing to both zombie and not_entrant methods | |
1202 | 1145 if (!nm->is_in_use() || (nm->method()->code() != nm)) csc->set_to_clean(); |
0 | 1146 } |
1147 break; | |
1148 } | |
1149 } | |
1150 } | |
1151 } | |
1152 | |
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1153 // This is a private interface with the sweeper. |
0 | 1154 void nmethod::mark_as_seen_on_stack() { |
12324
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8020151: PSR:PERF Large performance regressions when code cache is filled
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1155 assert(is_alive(), "Must be an alive method"); |
1644
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1156 // Set the traversal mark to ensure that the sweeper does 2 |
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1157 // cleaning passes before moving to zombie. |
0 | 1158 set_stack_traversal_mark(NMethodSweeper::traversal_count()); |
1159 } | |
1160 | |
2342
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7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
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|
1161 // Tell if a non-entrant method can be converted to a zombie (i.e., |
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|
1162 // there are no activations on the stack, not in use by the VM, |
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|
1163 // and not in use by the ServiceThread) |
0 | 1164 bool nmethod::can_not_entrant_be_converted() { |
1165 assert(is_not_entrant(), "must be a non-entrant method"); | |
1166 | |
1167 // Since the nmethod sweeper only does partial sweep the sweeper's traversal | |
1168 // count can be greater than the stack traversal count before it hits the | |
1169 // nmethod for the second time. | |
2342
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parents:
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|
1170 return stack_traversal_mark()+1 < NMethodSweeper::traversal_count() && |
46a56fac55c7
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|
1171 !is_locked_by_vm(); |
0 | 1172 } |
1173 | |
1174 void nmethod::inc_decompile_count() { | |
1783 | 1175 if (!is_compiled_by_c2()) return; |
0 | 1176 // Could be gated by ProfileTraps, but do not bother... |
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1177 Method* m = method(); |
0 | 1178 if (m == NULL) return; |
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1179 MethodData* mdo = m->method_data(); |
0 | 1180 if (mdo == NULL) return; |
6725
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1181 // There is a benign race here. See comments in methodData.hpp. |
0 | 1182 mdo->inc_decompile_count(); |
1183 } | |
1184 | |
1185 void nmethod::make_unloaded(BoolObjectClosure* is_alive, oop cause) { | |
1186 | |
1187 post_compiled_method_unload(); | |
1188 | |
1189 // Since this nmethod is being unloaded, make sure that dependencies | |
1190 // recorded in instanceKlasses get flushed and pass non-NULL closure to | |
1191 // indicate that this work is being done during a GC. | |
1192 assert(Universe::heap()->is_gc_active(), "should only be called during gc"); | |
1193 assert(is_alive != NULL, "Should be non-NULL"); | |
1194 // A non-NULL is_alive closure indicates that this is being called during GC. | |
1195 flush_dependencies(is_alive); | |
1196 | |
1197 // Break cycle between nmethod & method | |
1198 if (TraceClassUnloading && WizardMode) { | |
1199 tty->print_cr("[Class unloading: Making nmethod " INTPTR_FORMAT | |
6725
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1200 " unloadable], Method*(" INTPTR_FORMAT |
0 | 1201 "), cause(" INTPTR_FORMAT ")", |
1202 this, (address)_method, (address)cause); | |
989
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1203 if (!Universe::heap()->is_gc_active()) |
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1204 cause->klass()->print(); |
0 | 1205 } |
941 | 1206 // Unlink the osr method, so we do not look this up again |
1207 if (is_osr_method()) { | |
1208 invalidate_osr_method(); | |
1209 } | |
6725
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1210 // If _method is already NULL the Method* is about to be unloaded, |
0 | 1211 // so we don't have to break the cycle. Note that it is possible to |
6725
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1212 // have the Method* live here, in case we unload the nmethod because |
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1213 // it is pointing to some oop (other than the Method*) being unloaded. |
0 | 1214 if (_method != NULL) { |
6725
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1215 // OSR methods point to the Method*, but the Method* does not |
0 | 1216 // point back! |
1217 if (_method->code() == this) { | |
1218 _method->clear_code(); // Break a cycle | |
1219 } | |
1220 _method = NULL; // Clear the method of this dead nmethod | |
1221 } | |
1222 // Make the class unloaded - i.e., change state and notify sweeper | |
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1223 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint"); |
0 | 1224 if (is_in_use()) { |
1225 // Transitioning directly from live to unloaded -- so | |
1226 // we need to force a cache clean-up; remember this | |
1227 // for later on. | |
1228 CodeCache::set_needs_cache_clean(true); | |
1229 } | |
1644
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|
1230 _state = unloaded; |
0 | 1231 |
1109
032260830071
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|
1232 // Log the unloading. |
032260830071
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|
1233 log_state_change(); |
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|
1234 |
6725
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1235 // The Method* is gone at this point |
0 | 1236 assert(_method == NULL, "Tautology"); |
1237 | |
989
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|
1238 set_osr_link(NULL); |
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|
1239 //set_scavenge_root_link(NULL); // done by prune_scavenge_root_nmethods |
13074
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|
1240 NMethodSweeper::report_state_change(this); |
0 | 1241 } |
1242 | |
1243 void nmethod::invalidate_osr_method() { | |
1244 assert(_entry_bci != InvocationEntryBci, "wrong kind of nmethod"); | |
1245 // Remove from list of active nmethods | |
1246 if (method() != NULL) | |
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
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6806
diff
changeset
|
1247 method()->method_holder()->remove_osr_nmethod(this); |
0 | 1248 // Set entry as invalid |
1249 _entry_bci = InvalidOSREntryBci; | |
1250 } | |
1251 | |
1109
032260830071
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|
1252 void nmethod::log_state_change() const { |
0 | 1253 if (LogCompilation) { |
1254 if (xtty != NULL) { | |
1255 ttyLocker ttyl; // keep the following output all in one block | |
1644
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|
1256 if (_state == unloaded) { |
1109
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changeset
|
1257 xtty->begin_elem("make_unloaded thread='" UINTX_FORMAT "'", |
032260830071
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|
1258 os::current_thread_id()); |
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|
1259 } else { |
032260830071
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changeset
|
1260 xtty->begin_elem("make_not_entrant thread='" UINTX_FORMAT "'%s", |
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diff
changeset
|
1261 os::current_thread_id(), |
1644
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|
1262 (_state == zombie ? " zombie='1'" : "")); |
1109
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|
1263 } |
0 | 1264 log_identity(xtty); |
1265 xtty->stamp(); | |
1266 xtty->end_elem(); | |
1267 } | |
1268 } | |
1644
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|
1269 if (PrintCompilation && _state != unloaded) { |
2405
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|
1270 print_on(tty, _state == zombie ? "made zombie" : "made not entrant"); |
0 | 1271 } |
1272 } | |
1273 | |
13074
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|
1274 /** |
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|
1275 * Common functionality for both make_not_entrant and make_zombie |
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1276 */ |
1141 | 1277 bool nmethod::make_not_entrant_or_zombie(unsigned int state) { |
0 | 1278 assert(state == zombie || state == not_entrant, "must be zombie or not_entrant"); |
2342
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1279 assert(!is_zombie(), "should not already be a zombie"); |
0 | 1280 |
1644
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1281 // Make sure neither the nmethod nor the method is flushed in case of a safepoint in code below. |
0 | 1282 nmethodLocker nml(this); |
1644
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1283 methodHandle the_method(method()); |
1726 | 1284 No_Safepoint_Verifier nsv; |
0 | 1285 |
12080 | 1286 // during patching, depending on the nmethod state we must notify the GC that |
1287 // code has been unloaded, unregistering it. We cannot do this right while | |
1288 // holding the Patching_lock because we need to use the CodeCache_lock. This | |
1289 // would be prone to deadlocks. | |
1290 // This flag is used to remember whether we need to later lock and unregister. | |
1291 bool nmethod_needs_unregister = false; | |
1292 | |
0 | 1293 { |
1109
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1294 // invalidate osr nmethod before acquiring the patching lock since |
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1295 // they both acquire leaf locks and we don't want a deadlock. |
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1296 // This logic is equivalent to the logic below for patching the |
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1297 // verified entry point of regular methods. |
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1298 if (is_osr_method()) { |
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1299 // this effectively makes the osr nmethod not entrant |
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1300 invalidate_osr_method(); |
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1301 } |
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1302 |
0 | 1303 // Enter critical section. Does not block for safepoint. |
1304 MutexLockerEx pl(Patching_lock, Mutex::_no_safepoint_check_flag); | |
1109
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1305 |
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1306 if (_state == state) { |
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1307 // another thread already performed this transition so nothing |
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1308 // to do, but return false to indicate this. |
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1309 return false; |
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1310 } |
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1311 |
0 | 1312 // The caller can be calling the method statically or through an inline |
1313 // cache call. | |
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1314 if (!is_osr_method() && !is_not_entrant()) { |
0 | 1315 NativeJump::patch_verified_entry(entry_point(), verified_entry_point(), |
1316 SharedRuntime::get_handle_wrong_method_stub()); | |
1317 } | |
1318 | |
1644
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1319 if (is_in_use()) { |
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1320 // It's a true state change, so mark the method as decompiled. |
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1321 // Do it only for transition from alive. |
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1322 inc_decompile_count(); |
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1323 } |
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1324 |
12080 | 1325 // If the state is becoming a zombie, signal to unregister the nmethod with |
1326 // the heap. | |
1327 // This nmethod may have already been unloaded during a full GC. | |
1328 if ((state == zombie) && !is_unloaded()) { | |
1329 nmethod_needs_unregister = true; | |
1330 } | |
1331 | |
12324
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1332 // Must happen before state change. Otherwise we have a race condition in |
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1333 // nmethod::can_not_entrant_be_converted(). I.e., a method can immediately |
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1334 // transition its state from 'not_entrant' to 'zombie' without having to wait |
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1335 // for stack scanning. |
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1336 if (state == not_entrant) { |
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1337 mark_as_seen_on_stack(); |
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1338 OrderAccess::storestore(); |
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1339 } |
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1340 |
0 | 1341 // Change state |
1644
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1342 _state = state; |
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1343 |
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1344 // Log the transition once |
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1345 log_state_change(); |
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1346 |
1644
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1347 // Remove nmethod from method. |
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1348 // We need to check if both the _code and _from_compiled_code_entry_point |
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1349 // refer to this nmethod because there is a race in setting these two fields |
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1350 // in Method* as seen in bugid 4947125. |
1644
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1351 // If the vep() points to the zombie nmethod, the memory for the nmethod |
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1352 // could be flushed and the compiler and vtable stubs could still call |
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1353 // through it. |
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1354 if (method() != NULL && (method()->code() == this || |
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1355 method()->from_compiled_entry() == verified_entry_point())) { |
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1356 HandleMark hm; |
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1357 method()->clear_code(); |
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1358 } |
0 | 1359 } // leave critical region under Patching_lock |
1360 | |
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1361 // When the nmethod becomes zombie it is no longer alive so the |
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1362 // dependencies must be flushed. nmethods in the not_entrant |
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1363 // state will be flushed later when the transition to zombie |
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1364 // happens or they get unloaded. |
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1365 if (state == zombie) { |
1726 | 1366 { |
1367 // Flushing dependecies must be done before any possible | |
1368 // safepoint can sneak in, otherwise the oops used by the | |
1369 // dependency logic could have become stale. | |
1370 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
12080 | 1371 if (nmethod_needs_unregister) { |
1372 Universe::heap()->unregister_nmethod(this); | |
1373 } | |
1726 | 1374 flush_dependencies(NULL); |
1375 } | |
1644
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1376 |
2342
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1377 // zombie only - if a JVMTI agent has enabled the CompiledMethodUnload |
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1378 // event and it hasn't already been reported for this nmethod then |
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1379 // report it now. The event may have been reported earilier if the GC |
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1380 // marked it for unloading). JvmtiDeferredEventQueue support means |
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1381 // we no longer go to a safepoint here. |
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1382 post_compiled_method_unload(); |
1726 | 1383 |
1384 #ifdef ASSERT | |
1385 // It's no longer safe to access the oops section since zombie | |
1386 // nmethods aren't scanned for GC. | |
1387 _oops_are_stale = true; | |
1388 #endif | |
12161
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1389 // the Method may be reclaimed by class unloading now that the |
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1390 // nmethod is in zombie state |
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1391 set_method(NULL); |
1538
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1392 } else { |
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1393 assert(state == not_entrant, "other cases may need to be handled differently"); |
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1394 } |
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1395 |
0 | 1396 if (TraceCreateZombies) { |
1397 tty->print_cr("nmethod <" INTPTR_FORMAT "> code made %s", this, (state == not_entrant) ? "not entrant" : "zombie"); | |
1398 } | |
1399 | |
13074
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1400 NMethodSweeper::report_state_change(this); |
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1401 return true; |
0 | 1402 } |
1403 | |
1404 void nmethod::flush() { | |
1405 // Note that there are no valid oops in the nmethod anymore. | |
1406 assert(is_zombie() || (is_osr_method() && is_unloaded()), "must be a zombie method"); | |
1407 assert(is_marked_for_reclamation() || (is_osr_method() && is_unloaded()), "must be marked for reclamation"); | |
1408 | |
1409 assert (!is_locked_by_vm(), "locked methods shouldn't be flushed"); | |
1538
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1410 assert_locked_or_safepoint(CodeCache_lock); |
0 | 1411 |
1412 // completely deallocate this method | |
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1413 Events::log(JavaThread::current(), "flushing nmethod " INTPTR_FORMAT, this); |
0 | 1414 if (PrintMethodFlushing) { |
1202 | 1415 tty->print_cr("*flushing nmethod %3d/" INTPTR_FORMAT ". Live blobs:" UINT32_FORMAT "/Free CodeCache:" SIZE_FORMAT "Kb", |
1416 _compile_id, this, CodeCache::nof_blobs(), CodeCache::unallocated_capacity()/1024); | |
0 | 1417 } |
1418 | |
1419 // We need to deallocate any ExceptionCache data. | |
1420 // Note that we do not need to grab the nmethod lock for this, it | |
1421 // better be thread safe if we're disposing of it! | |
1422 ExceptionCache* ec = exception_cache(); | |
1423 set_exception_cache(NULL); | |
1424 while(ec != NULL) { | |
1425 ExceptionCache* next = ec->next(); | |
1426 delete ec; | |
1427 ec = next; | |
1428 } | |
1429 | |
989
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1430 if (on_scavenge_root_list()) { |
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1431 CodeCache::drop_scavenge_root_nmethod(this); |
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1432 } |
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1433 |
1692 | 1434 #ifdef SHARK |
1845
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1435 ((SharkCompiler *) compiler())->free_compiled_method(insts_begin()); |
1692 | 1436 #endif // SHARK |
1437 | |
0 | 1438 ((CodeBlob*)(this))->flush(); |
1439 | |
1440 CodeCache::free(this); | |
1441 } | |
1442 | |
1443 | |
1444 // | |
1445 // Notify all classes this nmethod is dependent on that it is no | |
1446 // longer dependent. This should only be called in two situations. | |
1447 // First, when a nmethod transitions to a zombie all dependents need | |
1448 // to be clear. Since zombification happens at a safepoint there's no | |
1449 // synchronization issues. The second place is a little more tricky. | |
1450 // During phase 1 of mark sweep class unloading may happen and as a | |
1451 // result some nmethods may get unloaded. In this case the flushing | |
1452 // of dependencies must happen during phase 1 since after GC any | |
1453 // dependencies in the unloaded nmethod won't be updated, so | |
1454 // traversing the dependency information in unsafe. In that case this | |
1455 // function is called with a non-NULL argument and this function only | |
1456 // notifies instanceKlasses that are reachable | |
1457 | |
1458 void nmethod::flush_dependencies(BoolObjectClosure* is_alive) { | |
1538
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1459 assert_locked_or_safepoint(CodeCache_lock); |
0 | 1460 assert(Universe::heap()->is_gc_active() == (is_alive != NULL), |
1461 "is_alive is non-NULL if and only if we are called during GC"); | |
1462 if (!has_flushed_dependencies()) { | |
1463 set_has_flushed_dependencies(); | |
1464 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
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1465 Klass* klass = deps.context_type(); |
0 | 1466 if (klass == NULL) continue; // ignore things like evol_method |
1467 | |
1468 // During GC the is_alive closure is non-NULL, and is used to | |
1469 // determine liveness of dependees that need to be updated. | |
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1470 if (is_alive == NULL || klass->is_loader_alive(is_alive)) { |
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1471 InstanceKlass::cast(klass)->remove_dependent_nmethod(this); |
0 | 1472 } |
1473 } | |
1474 } | |
1475 } | |
1476 | |
1477 | |
1478 // If this oop is not live, the nmethod can be unloaded. | |
6787
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1479 bool nmethod::can_unload(BoolObjectClosure* is_alive, oop* root, bool unloading_occurred) { |
0 | 1480 assert(root != NULL, "just checking"); |
1481 oop obj = *root; | |
1482 if (obj == NULL || is_alive->do_object_b(obj)) { | |
1483 return false; | |
1484 } | |
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1485 |
989
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1486 // If ScavengeRootsInCode is true, an nmethod might be unloaded |
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1487 // simply because one of its constant oops has gone dead. |
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1488 // No actual classes need to be unloaded in order for this to occur. |
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1489 assert(unloading_occurred || ScavengeRootsInCode, "Inconsistency in unloading"); |
0 | 1490 make_unloaded(is_alive, obj); |
1491 return true; | |
1492 } | |
1493 | |
1494 // ------------------------------------------------------------------ | |
1495 // post_compiled_method_load_event | |
1496 // new method for install_code() path | |
1497 // Transfer information from compilation to jvmti | |
1498 void nmethod::post_compiled_method_load_event() { | |
1499 | |
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1500 Method* moop = method(); |
4006 | 1501 HOTSPOT_COMPILED_METHOD_LOAD( |
1502 (char *) moop->klass_name()->bytes(), | |
1503 moop->klass_name()->utf8_length(), | |
1504 (char *) moop->name()->bytes(), | |
1505 moop->name()->utf8_length(), | |
1506 (char *) moop->signature()->bytes(), | |
1507 moop->signature()->utf8_length(), | |
1508 insts_begin(), insts_size()); | |
0 | 1509 |
1616
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changeset
|
1510 if (JvmtiExport::should_post_compiled_method_load() || |
38e8278318ca
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never
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|
1511 JvmtiExport::should_post_compiled_method_unload()) { |
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|
1512 get_and_cache_jmethod_id(); |
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never
parents:
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diff
changeset
|
1513 } |
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|
1514 |
0 | 1515 if (JvmtiExport::should_post_compiled_method_load()) { |
2195
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1516 // Let the Service thread (which is a real Java thread) post the event |
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1517 MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag); |
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1518 JvmtiDeferredEventQueue::enqueue( |
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1519 JvmtiDeferredEvent::compiled_method_load_event(this)); |
0 | 1520 } |
1521 } | |
1522 | |
1616
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|
1523 jmethodID nmethod::get_and_cache_jmethod_id() { |
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changeset
|
1524 if (_jmethod_id == NULL) { |
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never
parents:
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changeset
|
1525 // Cache the jmethod_id since it can no longer be looked up once the |
38e8278318ca
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never
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1526 // method itself has been marked for unloading. |
38e8278318ca
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1527 _jmethod_id = method()->jmethod_id(); |
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never
parents:
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|
1528 } |
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never
parents:
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|
1529 return _jmethod_id; |
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never
parents:
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|
1530 } |
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|
1531 |
0 | 1532 void nmethod::post_compiled_method_unload() { |
1577
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|
1533 if (unload_reported()) { |
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1534 // During unloading we transition to unloaded and then to zombie |
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1535 // and the unloading is reported during the first transition. |
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1536 return; |
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|
1537 } |
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|
1538 |
0 | 1539 assert(_method != NULL && !is_unloaded(), "just checking"); |
1540 DTRACE_METHOD_UNLOAD_PROBE(method()); | |
1541 | |
1542 // If a JVMTI agent has enabled the CompiledMethodUnload event then | |
1616
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1543 // post the event. Sometime later this nmethod will be made a zombie |
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1544 // by the sweeper but the Method* will not be valid at that point. |
1616
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1545 // If the _jmethod_id is null then no load event was ever requested |
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1546 // so don't bother posting the unload. The main reason for this is |
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1547 // that the jmethodID is a weak reference to the Method* so if |
1616
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|
1548 // it's being unloaded there's no way to look it up since the weak |
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|
1549 // ref will have been cleared. |
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1550 if (_jmethod_id != NULL && JvmtiExport::should_post_compiled_method_unload()) { |
0 | 1551 assert(!unload_reported(), "already unloaded"); |
2195
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1552 JvmtiDeferredEvent event = |
2342
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dcubed
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1553 JvmtiDeferredEvent::compiled_method_unload_event(this, |
2195
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1554 _jmethod_id, insts_begin()); |
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1555 if (SafepointSynchronize::is_at_safepoint()) { |
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1556 // Don't want to take the queueing lock. Add it as pending and |
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1557 // it will get enqueued later. |
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1558 JvmtiDeferredEventQueue::add_pending_event(event); |
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1559 } else { |
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1560 MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag); |
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1561 JvmtiDeferredEventQueue::enqueue(event); |
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1562 } |
0 | 1563 } |
1564 | |
1565 // The JVMTI CompiledMethodUnload event can be enabled or disabled at | |
1566 // any time. As the nmethod is being unloaded now we mark it has | |
1567 // having the unload event reported - this will ensure that we don't | |
1568 // attempt to report the event in the unlikely scenario where the | |
1569 // event is enabled at the time the nmethod is made a zombie. | |
1570 set_unload_reported(); | |
1571 } | |
1572 | |
1573 // This is called at the end of the strong tracing/marking phase of a | |
1574 // GC to unload an nmethod if it contains otherwise unreachable | |
1575 // oops. | |
1576 | |
6787
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1577 void nmethod::do_unloading(BoolObjectClosure* is_alive, bool unloading_occurred) { |
0 | 1578 // Make sure the oop's ready to receive visitors |
1579 assert(!is_zombie() && !is_unloaded(), | |
1580 "should not call follow on zombie or unloaded nmethod"); | |
1581 | |
1582 // If the method is not entrant then a JMP is plastered over the | |
1583 // first few bytes. If an oop in the old code was there, that oop | |
1584 // should not get GC'd. Skip the first few bytes of oops on | |
1585 // not-entrant methods. | |
1586 address low_boundary = verified_entry_point(); | |
1587 if (is_not_entrant()) { | |
1588 low_boundary += NativeJump::instruction_size; | |
1589 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
1590 // (See comment above.) | |
1591 } | |
1592 | |
1593 // The RedefineClasses() API can cause the class unloading invariant | |
1594 // to no longer be true. See jvmtiExport.hpp for details. | |
1595 // Also, leave a debugging breadcrumb in local flag. | |
1596 bool a_class_was_redefined = JvmtiExport::has_redefined_a_class(); | |
1597 if (a_class_was_redefined) { | |
1598 // This set of the unloading_occurred flag is done before the | |
1599 // call to post_compiled_method_unload() so that the unloading | |
1600 // of this nmethod is reported. | |
1601 unloading_occurred = true; | |
1602 } | |
1603 | |
1604 // Exception cache | |
1605 ExceptionCache* ec = exception_cache(); | |
1606 while (ec != NULL) { | |
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1607 Klass* ex_klass = ec->exception_type(); |
0 | 1608 ExceptionCache* next_ec = ec->next(); |
6725
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1609 if (ex_klass != NULL && !ex_klass->is_loader_alive(is_alive)) { |
0 | 1610 remove_from_exception_cache(ec); |
1611 } | |
1612 ec = next_ec; | |
1613 } | |
1614 | |
1615 // If class unloading occurred we first iterate over all inline caches and | |
1616 // clear ICs where the cached oop is referring to an unloaded klass or method. | |
1617 // The remaining live cached oops will be traversed in the relocInfo::oop_type | |
1618 // iteration below. | |
1619 if (unloading_occurred) { | |
1620 RelocIterator iter(this, low_boundary); | |
1621 while(iter.next()) { | |
1622 if (iter.type() == relocInfo::virtual_call_type) { | |
1623 CompiledIC *ic = CompiledIC_at(iter.reloc()); | |
6725
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1624 if (ic->is_icholder_call()) { |
0 | 1625 // The only exception is compiledICHolder oops which may |
1626 // yet be marked below. (We check this further below). | |
6725
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1627 CompiledICHolder* cichk_oop = ic->cached_icholder(); |
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1628 if (cichk_oop->holder_method()->method_holder()->is_loader_alive(is_alive) && |
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1629 cichk_oop->holder_klass()->is_loader_alive(is_alive)) { |
14212 | 1630 continue; |
1631 } | |
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1632 } else { |
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1633 Metadata* ic_oop = ic->cached_metadata(); |
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1634 if (ic_oop != NULL) { |
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1635 if (ic_oop->is_klass()) { |
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1636 if (((Klass*)ic_oop)->is_loader_alive(is_alive)) { |
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|
1637 continue; |
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|
1638 } |
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1639 } else if (ic_oop->is_method()) { |
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1640 if (((Method*)ic_oop)->method_holder()->is_loader_alive(is_alive)) { |
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|
1641 continue; |
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|
1642 } |
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|
1643 } else { |
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|
1644 ShouldNotReachHere(); |
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|
1645 } |
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|
1646 } |
14212 | 1647 } |
1648 ic->set_to_clean(); | |
0 | 1649 } |
1650 } | |
1651 } | |
1652 | |
1653 // Compiled code | |
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1654 { |
0 | 1655 RelocIterator iter(this, low_boundary); |
1656 while (iter.next()) { | |
1657 if (iter.type() == relocInfo::oop_type) { | |
1658 oop_Relocation* r = iter.oop_reloc(); | |
1659 // In this loop, we must only traverse those oops directly embedded in | |
1660 // the code. Other oops (oop_index>0) are seen as part of scopes_oops. | |
1661 assert(1 == (r->oop_is_immediate()) + | |
1662 (r->oop_addr() >= oops_begin() && r->oop_addr() < oops_end()), | |
1663 "oop must be found in exactly one place"); | |
1664 if (r->oop_is_immediate() && r->oop_value() != NULL) { | |
6787
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|
1665 if (can_unload(is_alive, r->oop_addr(), unloading_occurred)) { |
0 | 1666 return; |
1667 } | |
1668 } | |
1669 } | |
1670 } | |
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|
1671 } |
0 | 1672 |
1673 | |
1674 // Scopes | |
1675 for (oop* p = oops_begin(); p < oops_end(); p++) { | |
1676 if (*p == Universe::non_oop_word()) continue; // skip non-oops | |
6787
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|
1677 if (can_unload(is_alive, p, unloading_occurred)) { |
0 | 1678 return; |
1679 } | |
1680 } | |
1681 | |
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1682 // Ensure that all metadata is still alive |
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1683 verify_metadata_loaders(low_boundary, is_alive); |
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1684 } |
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1685 |
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|
1686 #ifdef ASSERT |
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1687 |
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1688 class CheckClass : AllStatic { |
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1689 static BoolObjectClosure* _is_alive; |
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1690 |
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1691 // Check class_loader is alive for this bit of metadata. |
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1692 static void check_class(Metadata* md) { |
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1693 Klass* klass = NULL; |
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1694 if (md->is_klass()) { |
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|
1695 klass = ((Klass*)md); |
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1696 } else if (md->is_method()) { |
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|
1697 klass = ((Method*)md)->method_holder(); |
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1698 } else if (md->is_methodData()) { |
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|
1699 klass = ((MethodData*)md)->method()->method_holder(); |
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1700 } else { |
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1701 md->print(); |
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1702 ShouldNotReachHere(); |
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1703 } |
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1704 assert(klass->is_loader_alive(_is_alive), "must be alive"); |
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1705 } |
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1706 public: |
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1707 static void do_check_class(BoolObjectClosure* is_alive, nmethod* nm) { |
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1708 assert(SafepointSynchronize::is_at_safepoint(), "this is only ok at safepoint"); |
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1709 _is_alive = is_alive; |
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1710 nm->metadata_do(check_class); |
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1711 } |
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1712 }; |
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1713 |
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1714 // This is called during a safepoint so can use static data |
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1715 BoolObjectClosure* CheckClass::_is_alive = NULL; |
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1716 #endif // ASSERT |
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1717 |
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1718 |
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1719 // Processing of oop references should have been sufficient to keep |
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1720 // all strong references alive. Any weak references should have been |
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1721 // cleared as well. Visit all the metadata and ensure that it's |
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1722 // really alive. |
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1723 void nmethod::verify_metadata_loaders(address low_boundary, BoolObjectClosure* is_alive) { |
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1724 #ifdef ASSERT |
0 | 1725 RelocIterator iter(this, low_boundary); |
1726 while (iter.next()) { | |
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1727 // static_stub_Relocations may have dangling references to |
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1728 // Method*s so trim them out here. Otherwise it looks like |
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1729 // compiled code is maintaining a link to dead metadata. |
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1730 address static_call_addr = NULL; |
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1731 if (iter.type() == relocInfo::opt_virtual_call_type) { |
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1732 CompiledIC* cic = CompiledIC_at(iter.reloc()); |
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1733 if (!cic->is_call_to_interpreted()) { |
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1734 static_call_addr = iter.addr(); |
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1735 } |
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1736 } else if (iter.type() == relocInfo::static_call_type) { |
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1737 CompiledStaticCall* csc = compiledStaticCall_at(iter.reloc()); |
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1738 if (!csc->is_call_to_interpreted()) { |
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1739 static_call_addr = iter.addr(); |
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1740 } |
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1741 } |
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1742 if (static_call_addr != NULL) { |
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1743 RelocIterator sciter(this, low_boundary); |
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1744 while (sciter.next()) { |
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1745 if (sciter.type() == relocInfo::static_stub_type && |
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1746 sciter.static_stub_reloc()->static_call() == static_call_addr) { |
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1747 sciter.static_stub_reloc()->clear_inline_cache(); |
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1748 } |
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1749 } |
0 | 1750 } |
1751 } | |
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1752 // Check that the metadata embedded in the nmethod is alive |
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1753 CheckClass::do_check_class(is_alive, this); |
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1754 #endif |
0 | 1755 } |
1756 | |
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1757 |
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1758 // Iterate over metadata calling this function. Used by RedefineClasses |
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1759 void nmethod::metadata_do(void f(Metadata*)) { |
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1760 address low_boundary = verified_entry_point(); |
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1761 if (is_not_entrant()) { |
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1762 low_boundary += NativeJump::instruction_size; |
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1763 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. |
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1764 // (See comment above.) |
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1765 } |
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1766 { |
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1767 // Visit all immediate references that are embedded in the instruction stream. |
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1768 RelocIterator iter(this, low_boundary); |
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1769 while (iter.next()) { |
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1770 if (iter.type() == relocInfo::metadata_type ) { |
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1771 metadata_Relocation* r = iter.metadata_reloc(); |
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1772 // In this lmetadata, we must only follow those metadatas directly embedded in |
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1773 // the code. Other metadatas (oop_index>0) are seen as part of |
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1774 // the metadata section below. |
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1775 assert(1 == (r->metadata_is_immediate()) + |
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1776 (r->metadata_addr() >= metadata_begin() && r->metadata_addr() < metadata_end()), |
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1777 "metadata must be found in exactly one place"); |
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1778 if (r->metadata_is_immediate() && r->metadata_value() != NULL) { |
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1779 Metadata* md = r->metadata_value(); |
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1780 f(md); |
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1781 } |
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1782 } else if (iter.type() == relocInfo::virtual_call_type) { |
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1783 // Check compiledIC holders associated with this nmethod |
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1784 CompiledIC *ic = CompiledIC_at(iter.reloc()); |
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1785 if (ic->is_icholder_call()) { |
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1786 CompiledICHolder* cichk = ic->cached_icholder(); |
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1787 f(cichk->holder_method()); |
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1788 f(cichk->holder_klass()); |
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1789 } else { |
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1790 Metadata* ic_oop = ic->cached_metadata(); |
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1791 if (ic_oop != NULL) { |
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1792 f(ic_oop); |
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1793 } |
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1794 } |
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1795 } |
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1796 } |
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1797 } |
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1798 |
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1799 // Visit the metadata section |
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1800 for (Metadata** p = metadata_begin(); p < metadata_end(); p++) { |
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1801 if (*p == Universe::non_oop_word() || *p == NULL) continue; // skip non-oops |
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1802 Metadata* md = *p; |
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1803 f(md); |
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1804 } |
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1805 |
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1806 // Call function Method*, not embedded in these other places. |
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1807 if (_method != NULL) f(_method); |
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1808 } |
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1809 |
12080 | 1810 void nmethod::oops_do(OopClosure* f, bool allow_zombie) { |
0 | 1811 // make sure the oops ready to receive visitors |
12080 | 1812 assert(allow_zombie || !is_zombie(), "should not call follow on zombie nmethod"); |
1813 assert(!is_unloaded(), "should not call follow on unloaded nmethod"); | |
0 | 1814 |
1815 // If the method is not entrant or zombie then a JMP is plastered over the | |
1816 // first few bytes. If an oop in the old code was there, that oop | |
1817 // should not get GC'd. Skip the first few bytes of oops on | |
1818 // not-entrant methods. | |
1819 address low_boundary = verified_entry_point(); | |
1820 if (is_not_entrant()) { | |
1821 low_boundary += NativeJump::instruction_size; | |
1822 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
1823 // (See comment above.) | |
1824 } | |
1825 | |
1826 RelocIterator iter(this, low_boundary); | |
941 | 1827 |
0 | 1828 while (iter.next()) { |
1829 if (iter.type() == relocInfo::oop_type ) { | |
1830 oop_Relocation* r = iter.oop_reloc(); | |
1831 // In this loop, we must only follow those oops directly embedded in | |
1832 // the code. Other oops (oop_index>0) are seen as part of scopes_oops. | |
941 | 1833 assert(1 == (r->oop_is_immediate()) + |
1834 (r->oop_addr() >= oops_begin() && r->oop_addr() < oops_end()), | |
1835 "oop must be found in exactly one place"); | |
0 | 1836 if (r->oop_is_immediate() && r->oop_value() != NULL) { |
1837 f->do_oop(r->oop_addr()); | |
1838 } | |
1839 } | |
1840 } | |
1841 | |
1842 // Scopes | |
989
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1843 // This includes oop constants not inlined in the code stream. |
0 | 1844 for (oop* p = oops_begin(); p < oops_end(); p++) { |
1845 if (*p == Universe::non_oop_word()) continue; // skip non-oops | |
1846 f->do_oop(p); | |
1847 } | |
1848 } | |
1849 | |
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1850 #define NMETHOD_SENTINEL ((nmethod*)badAddress) |
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1851 |
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1852 nmethod* volatile nmethod::_oops_do_mark_nmethods; |
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1853 |
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1854 // An nmethod is "marked" if its _mark_link is set non-null. |
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1855 // Even if it is the end of the linked list, it will have a non-null link value, |
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1856 // as long as it is on the list. |
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1857 // This code must be MP safe, because it is used from parallel GC passes. |
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1858 bool nmethod::test_set_oops_do_mark() { |
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1859 assert(nmethod::oops_do_marking_is_active(), "oops_do_marking_prologue must be called"); |
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1860 nmethod* observed_mark_link = _oops_do_mark_link; |
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1861 if (observed_mark_link == NULL) { |
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1862 // Claim this nmethod for this thread to mark. |
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1863 observed_mark_link = (nmethod*) |
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1864 Atomic::cmpxchg_ptr(NMETHOD_SENTINEL, &_oops_do_mark_link, NULL); |
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1865 if (observed_mark_link == NULL) { |
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1866 |
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1867 // Atomically append this nmethod (now claimed) to the head of the list: |
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1868 nmethod* observed_mark_nmethods = _oops_do_mark_nmethods; |
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1869 for (;;) { |
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1870 nmethod* required_mark_nmethods = observed_mark_nmethods; |
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1871 _oops_do_mark_link = required_mark_nmethods; |
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1872 observed_mark_nmethods = (nmethod*) |
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1873 Atomic::cmpxchg_ptr(this, &_oops_do_mark_nmethods, required_mark_nmethods); |
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1874 if (observed_mark_nmethods == required_mark_nmethods) |
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1875 break; |
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1876 } |
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1877 // Mark was clear when we first saw this guy. |
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1878 NOT_PRODUCT(if (TraceScavenge) print_on(tty, "oops_do, mark")); |
989
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1879 return false; |
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1880 } |
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1881 } |
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1882 // On fall through, another racing thread marked this nmethod before we did. |
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1883 return true; |
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1884 } |
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1885 |
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1886 void nmethod::oops_do_marking_prologue() { |
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1887 NOT_PRODUCT(if (TraceScavenge) tty->print_cr("[oops_do_marking_prologue")); |
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1888 assert(_oops_do_mark_nmethods == NULL, "must not call oops_do_marking_prologue twice in a row"); |
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1889 // We use cmpxchg_ptr instead of regular assignment here because the user |
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1890 // may fork a bunch of threads, and we need them all to see the same state. |
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1891 void* observed = Atomic::cmpxchg_ptr(NMETHOD_SENTINEL, &_oops_do_mark_nmethods, NULL); |
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1892 guarantee(observed == NULL, "no races in this sequential code"); |
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1893 } |
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1894 |
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1895 void nmethod::oops_do_marking_epilogue() { |
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1896 assert(_oops_do_mark_nmethods != NULL, "must not call oops_do_marking_epilogue twice in a row"); |
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1897 nmethod* cur = _oops_do_mark_nmethods; |
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1898 while (cur != NMETHOD_SENTINEL) { |
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1899 assert(cur != NULL, "not NULL-terminated"); |
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1900 nmethod* next = cur->_oops_do_mark_link; |
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1901 cur->_oops_do_mark_link = NULL; |
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1902 cur->fix_oop_relocations(); |
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1903 NOT_PRODUCT(if (TraceScavenge) cur->print_on(tty, "oops_do, unmark")); |
989
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1904 cur = next; |
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1905 } |
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1906 void* required = _oops_do_mark_nmethods; |
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1907 void* observed = Atomic::cmpxchg_ptr(NULL, &_oops_do_mark_nmethods, required); |
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1908 guarantee(observed == required, "no races in this sequential code"); |
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1909 NOT_PRODUCT(if (TraceScavenge) tty->print_cr("oops_do_marking_epilogue]")); |
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1910 } |
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1911 |
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1912 class DetectScavengeRoot: public OopClosure { |
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1913 bool _detected_scavenge_root; |
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1914 public: |
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1915 DetectScavengeRoot() : _detected_scavenge_root(false) |
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1916 { NOT_PRODUCT(_print_nm = NULL); } |
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1917 bool detected_scavenge_root() { return _detected_scavenge_root; } |
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1918 virtual void do_oop(oop* p) { |
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1919 if ((*p) != NULL && (*p)->is_scavengable()) { |
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1920 NOT_PRODUCT(maybe_print(p)); |
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1921 _detected_scavenge_root = true; |
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1922 } |
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1923 } |
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1924 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
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1925 |
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1926 #ifndef PRODUCT |
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1927 nmethod* _print_nm; |
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1928 void maybe_print(oop* p) { |
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1929 if (_print_nm == NULL) return; |
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1930 if (!_detected_scavenge_root) _print_nm->print_on(tty, "new scavenge root"); |
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1931 tty->print_cr(""PTR_FORMAT"[offset=%d] detected scavengable oop "PTR_FORMAT" (found at "PTR_FORMAT")", |
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1932 _print_nm, (int)((intptr_t)p - (intptr_t)_print_nm), |
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1933 (void *)(*p), (intptr_t)p); |
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1934 (*p)->print(); |
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1935 } |
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1936 #endif //PRODUCT |
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1937 }; |
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1938 |
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1939 bool nmethod::detect_scavenge_root_oops() { |
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1940 DetectScavengeRoot detect_scavenge_root; |
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1941 NOT_PRODUCT(if (TraceScavenge) detect_scavenge_root._print_nm = this); |
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1942 oops_do(&detect_scavenge_root); |
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1943 return detect_scavenge_root.detected_scavenge_root(); |
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1944 } |
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1945 |
0 | 1946 // Method that knows how to preserve outgoing arguments at call. This method must be |
1947 // called with a frame corresponding to a Java invoke | |
1948 void nmethod::preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { | |
1692 | 1949 #ifndef SHARK |
0 | 1950 if (!method()->is_native()) { |
1951 SimpleScopeDesc ssd(this, fr.pc()); | |
2142 | 1952 Bytecode_invoke call(ssd.method(), ssd.bci()); |
10390 | 1953 bool has_receiver = call.has_receiver(); |
1954 bool has_appendix = call.has_appendix(); | |
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1955 Symbol* signature = call.signature(); |
10390 | 1956 fr.oops_compiled_arguments_do(signature, has_receiver, has_appendix, reg_map, f); |
0 | 1957 } |
1692 | 1958 #endif // !SHARK |
0 | 1959 } |
1960 | |
1961 | |
1962 oop nmethod::embeddedOop_at(u_char* p) { | |
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1963 RelocIterator iter(this, p, p + 1); |
0 | 1964 while (iter.next()) |
1965 if (iter.type() == relocInfo::oop_type) { | |
1966 return iter.oop_reloc()->oop_value(); | |
1967 } | |
1968 return NULL; | |
1969 } | |
1970 | |
1971 | |
1972 inline bool includes(void* p, void* from, void* to) { | |
1973 return from <= p && p < to; | |
1974 } | |
1975 | |
1976 | |
1977 void nmethod::copy_scopes_pcs(PcDesc* pcs, int count) { | |
1978 assert(count >= 2, "must be sentinel values, at least"); | |
1979 | |
1980 #ifdef ASSERT | |
1981 // must be sorted and unique; we do a binary search in find_pc_desc() | |
1982 int prev_offset = pcs[0].pc_offset(); | |
1983 assert(prev_offset == PcDesc::lower_offset_limit, | |
1984 "must start with a sentinel"); | |
1985 for (int i = 1; i < count; i++) { | |
1986 int this_offset = pcs[i].pc_offset(); | |
1987 assert(this_offset > prev_offset, "offsets must be sorted"); | |
1988 prev_offset = this_offset; | |
1989 } | |
1990 assert(prev_offset == PcDesc::upper_offset_limit, | |
1991 "must end with a sentinel"); | |
1992 #endif //ASSERT | |
1993 | |
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1994 // Search for MethodHandle invokes and tag the nmethod. |
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1995 for (int i = 0; i < count; i++) { |
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1996 if (pcs[i].is_method_handle_invoke()) { |
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1997 set_has_method_handle_invokes(true); |
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1998 break; |
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1999 } |
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2000 } |
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2001 assert(has_method_handle_invokes() == (_deoptimize_mh_offset != -1), "must have deopt mh handler"); |
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2002 |
0 | 2003 int size = count * sizeof(PcDesc); |
2004 assert(scopes_pcs_size() >= size, "oob"); | |
2005 memcpy(scopes_pcs_begin(), pcs, size); | |
2006 | |
2007 // Adjust the final sentinel downward. | |
2008 PcDesc* last_pc = &scopes_pcs_begin()[count-1]; | |
2009 assert(last_pc->pc_offset() == PcDesc::upper_offset_limit, "sanity"); | |
1748 | 2010 last_pc->set_pc_offset(content_size() + 1); |
0 | 2011 for (; last_pc + 1 < scopes_pcs_end(); last_pc += 1) { |
2012 // Fill any rounding gaps with copies of the last record. | |
2013 last_pc[1] = last_pc[0]; | |
2014 } | |
2015 // The following assert could fail if sizeof(PcDesc) is not | |
2016 // an integral multiple of oopSize (the rounding term). | |
2017 // If it fails, change the logic to always allocate a multiple | |
2018 // of sizeof(PcDesc), and fill unused words with copies of *last_pc. | |
2019 assert(last_pc + 1 == scopes_pcs_end(), "must match exactly"); | |
2020 } | |
2021 | |
2022 void nmethod::copy_scopes_data(u_char* buffer, int size) { | |
2023 assert(scopes_data_size() >= size, "oob"); | |
2024 memcpy(scopes_data_begin(), buffer, size); | |
2025 } | |
2026 | |
2027 | |
2028 #ifdef ASSERT | |
2029 static PcDesc* linear_search(nmethod* nm, int pc_offset, bool approximate) { | |
2030 PcDesc* lower = nm->scopes_pcs_begin(); | |
2031 PcDesc* upper = nm->scopes_pcs_end(); | |
2032 lower += 1; // exclude initial sentinel | |
2033 PcDesc* res = NULL; | |
2034 for (PcDesc* p = lower; p < upper; p++) { | |
2035 NOT_PRODUCT(--nmethod_stats.pc_desc_tests); // don't count this call to match_desc | |
2036 if (match_desc(p, pc_offset, approximate)) { | |
2037 if (res == NULL) | |
2038 res = p; | |
2039 else | |
2040 res = (PcDesc*) badAddress; | |
2041 } | |
2042 } | |
2043 return res; | |
2044 } | |
2045 #endif | |
2046 | |
2047 | |
2048 // Finds a PcDesc with real-pc equal to "pc" | |
2049 PcDesc* nmethod::find_pc_desc_internal(address pc, bool approximate) { | |
1748 | 2050 address base_address = code_begin(); |
0 | 2051 if ((pc < base_address) || |
2052 (pc - base_address) >= (ptrdiff_t) PcDesc::upper_offset_limit) { | |
2053 return NULL; // PC is wildly out of range | |
2054 } | |
2055 int pc_offset = (int) (pc - base_address); | |
2056 | |
2057 // Check the PcDesc cache if it contains the desired PcDesc | |
2058 // (This as an almost 100% hit rate.) | |
2059 PcDesc* res = _pc_desc_cache.find_pc_desc(pc_offset, approximate); | |
2060 if (res != NULL) { | |
2061 assert(res == linear_search(this, pc_offset, approximate), "cache ok"); | |
2062 return res; | |
2063 } | |
2064 | |
2065 // Fallback algorithm: quasi-linear search for the PcDesc | |
2066 // Find the last pc_offset less than the given offset. | |
2067 // The successor must be the required match, if there is a match at all. | |
2068 // (Use a fixed radix to avoid expensive affine pointer arithmetic.) | |
2069 PcDesc* lower = scopes_pcs_begin(); | |
2070 PcDesc* upper = scopes_pcs_end(); | |
2071 upper -= 1; // exclude final sentinel | |
2072 if (lower >= upper) return NULL; // native method; no PcDescs at all | |
2073 | |
2074 #define assert_LU_OK \ | |
2075 /* invariant on lower..upper during the following search: */ \ | |
2076 assert(lower->pc_offset() < pc_offset, "sanity"); \ | |
2077 assert(upper->pc_offset() >= pc_offset, "sanity") | |
2078 assert_LU_OK; | |
2079 | |
2080 // Use the last successful return as a split point. | |
2081 PcDesc* mid = _pc_desc_cache.last_pc_desc(); | |
2082 NOT_PRODUCT(++nmethod_stats.pc_desc_searches); | |
2083 if (mid->pc_offset() < pc_offset) { | |
2084 lower = mid; | |
2085 } else { | |
2086 upper = mid; | |
2087 } | |
2088 | |
2089 // Take giant steps at first (4096, then 256, then 16, then 1) | |
2090 const int LOG2_RADIX = 4 /*smaller steps in debug mode:*/ debug_only(-1); | |
2091 const int RADIX = (1 << LOG2_RADIX); | |
2092 for (int step = (1 << (LOG2_RADIX*3)); step > 1; step >>= LOG2_RADIX) { | |
2093 while ((mid = lower + step) < upper) { | |
2094 assert_LU_OK; | |
2095 NOT_PRODUCT(++nmethod_stats.pc_desc_searches); | |
2096 if (mid->pc_offset() < pc_offset) { | |
2097 lower = mid; | |
2098 } else { | |
2099 upper = mid; | |
2100 break; | |
2101 } | |
2102 } | |
2103 assert_LU_OK; | |
2104 } | |
2105 | |
2106 // Sneak up on the value with a linear search of length ~16. | |
2107 while (true) { | |
2108 assert_LU_OK; | |
2109 mid = lower + 1; | |
2110 NOT_PRODUCT(++nmethod_stats.pc_desc_searches); | |
2111 if (mid->pc_offset() < pc_offset) { | |
2112 lower = mid; | |
2113 } else { | |
2114 upper = mid; | |
2115 break; | |
2116 } | |
2117 } | |
2118 #undef assert_LU_OK | |
2119 | |
2120 if (match_desc(upper, pc_offset, approximate)) { | |
2121 assert(upper == linear_search(this, pc_offset, approximate), "search ok"); | |
2122 _pc_desc_cache.add_pc_desc(upper); | |
2123 return upper; | |
2124 } else { | |
2125 assert(NULL == linear_search(this, pc_offset, approximate), "search ok"); | |
2126 return NULL; | |
2127 } | |
2128 } | |
2129 | |
2130 | |
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2131 void nmethod::check_all_dependencies(DepChange& changes) { |
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2132 // Checked dependencies are allocated into this ResourceMark |
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2133 ResourceMark rm; |
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2134 |
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2135 // Turn off dependency tracing while actually testing dependencies. |
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2136 NOT_PRODUCT( FlagSetting fs(TraceDependencies, false) ); |
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2137 |
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2138 GenericHashtable<DependencySignature, ResourceObj>* table = new GenericHashtable<DependencySignature, ResourceObj>(11027); |
14262
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2139 // Iterate over live nmethods and check dependencies of all nmethods that are not |
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2140 // marked for deoptimization. A particular dependency is only checked once. |
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2141 for(nmethod* nm = CodeCache::alive_nmethod(CodeCache::first()); nm != NULL; nm = CodeCache::alive_nmethod(CodeCache::next(nm))) { |
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2142 if (!nm->is_marked_for_deoptimization()) { |
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2143 for (Dependencies::DepStream deps(nm); deps.next(); ) { |
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2144 // Construct abstraction of a dependency. |
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2145 DependencySignature* current_sig = new DependencySignature(deps); |
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2146 // Determine if 'deps' is already checked. table->add() returns |
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2147 // 'true' if the dependency was added (i.e., was not in the hashtable). |
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2148 if (table->add(current_sig)) { |
14262
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2149 if (deps.check_dependency() != NULL) { |
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2150 // Dependency checking failed. Print out information about the failed |
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2151 // dependency and finally fail with an assert. We can fail here, since |
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2152 // dependency checking is never done in a product build. |
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2153 changes.print(); |
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2154 nm->print(); |
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2155 nm->print_dependencies(); |
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2156 assert(false, "Should have been marked for deoptimization"); |
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2157 } |
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2158 } |
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2159 } |
0 | 2160 } |
2161 } | |
2162 } | |
2163 | |
2164 bool nmethod::check_dependency_on(DepChange& changes) { | |
2165 // What has happened: | |
2166 // 1) a new class dependee has been added | |
2167 // 2) dependee and all its super classes have been marked | |
2168 bool found_check = false; // set true if we are upset | |
2169 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
2170 // Evaluate only relevant dependencies. | |
2171 if (deps.spot_check_dependency_at(changes) != NULL) { | |
2172 found_check = true; | |
2173 NOT_DEBUG(break); | |
2174 } | |
2175 } | |
2176 return found_check; | |
2177 } | |
2178 | |
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2179 bool nmethod::is_evol_dependent_on(Klass* dependee) { |
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2180 InstanceKlass *dependee_ik = InstanceKlass::cast(dependee); |
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2181 Array<Method*>* dependee_methods = dependee_ik->methods(); |
0 | 2182 for (Dependencies::DepStream deps(this); deps.next(); ) { |
2183 if (deps.type() == Dependencies::evol_method) { | |
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2184 Method* method = deps.method_argument(0); |
0 | 2185 for (int j = 0; j < dependee_methods->length(); j++) { |
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2186 if (dependee_methods->at(j) == method) { |
0 | 2187 // RC_TRACE macro has an embedded ResourceMark |
2188 RC_TRACE(0x01000000, | |
2189 ("Found evol dependency of nmethod %s.%s(%s) compile_id=%d on method %s.%s(%s)", | |
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2190 _method->method_holder()->external_name(), |
0 | 2191 _method->name()->as_C_string(), |
2192 _method->signature()->as_C_string(), compile_id(), | |
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2193 method->method_holder()->external_name(), |
0 | 2194 method->name()->as_C_string(), |
2195 method->signature()->as_C_string())); | |
2196 if (TraceDependencies || LogCompilation) | |
2197 deps.log_dependency(dependee); | |
2198 return true; | |
2199 } | |
2200 } | |
2201 } | |
2202 } | |
2203 return false; | |
2204 } | |
2205 | |
2206 // Called from mark_for_deoptimization, when dependee is invalidated. | |
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2207 bool nmethod::is_dependent_on_method(Method* dependee) { |
0 | 2208 for (Dependencies::DepStream deps(this); deps.next(); ) { |
2209 if (deps.type() != Dependencies::evol_method) | |
2210 continue; | |
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2211 Method* method = deps.method_argument(0); |
0 | 2212 if (method == dependee) return true; |
2213 } | |
2214 return false; | |
2215 } | |
2216 | |
2217 | |
2218 bool nmethod::is_patchable_at(address instr_addr) { | |
1748 | 2219 assert(insts_contains(instr_addr), "wrong nmethod used"); |
0 | 2220 if (is_zombie()) { |
2221 // a zombie may never be patched | |
2222 return false; | |
2223 } | |
2224 return true; | |
2225 } | |
2226 | |
2227 | |
2228 address nmethod::continuation_for_implicit_exception(address pc) { | |
2229 // Exception happened outside inline-cache check code => we are inside | |
2230 // an active nmethod => use cpc to determine a return address | |
1748 | 2231 int exception_offset = pc - code_begin(); |
0 | 2232 int cont_offset = ImplicitExceptionTable(this).at( exception_offset ); |
2233 #ifdef ASSERT | |
2234 if (cont_offset == 0) { | |
2235 Thread* thread = ThreadLocalStorage::get_thread_slow(); | |
2236 ResetNoHandleMark rnm; // Might be called from LEAF/QUICK ENTRY | |
2237 HandleMark hm(thread); | |
2238 ResourceMark rm(thread); | |
2239 CodeBlob* cb = CodeCache::find_blob(pc); | |
2240 assert(cb != NULL && cb == this, ""); | |
2241 tty->print_cr("implicit exception happened at " INTPTR_FORMAT, pc); | |
2242 print(); | |
2243 method()->print_codes(); | |
2244 print_code(); | |
2245 print_pcs(); | |
2246 } | |
2247 #endif | |
1250 | 2248 if (cont_offset == 0) { |
2249 // Let the normal error handling report the exception | |
2250 return NULL; | |
2251 } | |
1748 | 2252 return code_begin() + cont_offset; |
0 | 2253 } |
2254 | |
2255 | |
2256 | |
2257 void nmethod_init() { | |
2258 // make sure you didn't forget to adjust the filler fields | |
2259 assert(sizeof(nmethod) % oopSize == 0, "nmethod size must be multiple of a word"); | |
2260 } | |
2261 | |
2262 | |
2263 //------------------------------------------------------------------------------------------- | |
2264 | |
2265 | |
2266 // QQQ might we make this work from a frame?? | |
2267 nmethodLocker::nmethodLocker(address pc) { | |
2268 CodeBlob* cb = CodeCache::find_blob(pc); | |
2269 guarantee(cb != NULL && cb->is_nmethod(), "bad pc for a nmethod found"); | |
2270 _nm = (nmethod*)cb; | |
2271 lock_nmethod(_nm); | |
2272 } | |
2273 | |
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2274 // Only JvmtiDeferredEvent::compiled_method_unload_event() |
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2275 // should pass zombie_ok == true. |
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2276 void nmethodLocker::lock_nmethod(nmethod* nm, bool zombie_ok) { |
0 | 2277 if (nm == NULL) return; |
2278 Atomic::inc(&nm->_lock_count); | |
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2279 guarantee(zombie_ok || !nm->is_zombie(), "cannot lock a zombie method"); |
0 | 2280 } |
2281 | |
2282 void nmethodLocker::unlock_nmethod(nmethod* nm) { | |
2283 if (nm == NULL) return; | |
2284 Atomic::dec(&nm->_lock_count); | |
2285 guarantee(nm->_lock_count >= 0, "unmatched nmethod lock/unlock"); | |
2286 } | |
2287 | |
1204 | 2288 |
2289 // ----------------------------------------------------------------------------- | |
2290 // nmethod::get_deopt_original_pc | |
2291 // | |
2292 // Return the original PC for the given PC if: | |
2293 // (a) the given PC belongs to a nmethod and | |
2294 // (b) it is a deopt PC | |
2295 address nmethod::get_deopt_original_pc(const frame* fr) { | |
2296 if (fr->cb() == NULL) return NULL; | |
2297 | |
2298 nmethod* nm = fr->cb()->as_nmethod_or_null(); | |
2299 if (nm != NULL && nm->is_deopt_pc(fr->pc())) | |
2300 return nm->get_original_pc(fr); | |
2301 | |
2302 return NULL; | |
0 | 2303 } |
2304 | |
2305 | |
2306 // ----------------------------------------------------------------------------- | |
1135
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2307 // MethodHandle |
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2308 |
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2309 bool nmethod::is_method_handle_return(address return_pc) { |
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2310 if (!has_method_handle_invokes()) return false; |
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2311 PcDesc* pd = pc_desc_at(return_pc); |
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2312 if (pd == NULL) |
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2313 return false; |
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2314 return pd->is_method_handle_invoke(); |
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2315 } |
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2316 |
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2317 |
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2318 // ----------------------------------------------------------------------------- |
0 | 2319 // Verification |
2320 | |
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2321 class VerifyOopsClosure: public OopClosure { |
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2322 nmethod* _nm; |
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2323 bool _ok; |
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2324 public: |
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2325 VerifyOopsClosure(nmethod* nm) : _nm(nm), _ok(true) { } |
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2326 bool ok() { return _ok; } |
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2327 virtual void do_oop(oop* p) { |
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2328 if ((*p) == NULL || (*p)->is_oop()) return; |
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2329 if (_ok) { |
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2330 _nm->print_nmethod(true); |
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2331 _ok = false; |
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2332 } |
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2333 tty->print_cr("*** non-oop "PTR_FORMAT" found at "PTR_FORMAT" (offset %d)", |
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2334 (void *)(*p), (intptr_t)p, (int)((intptr_t)p - (intptr_t)_nm)); |
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2335 } |
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2336 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
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2337 }; |
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2338 |
0 | 2339 void nmethod::verify() { |
2340 | |
2341 // Hmm. OSR methods can be deopted but not marked as zombie or not_entrant | |
2342 // seems odd. | |
2343 | |
2344 if( is_zombie() || is_not_entrant() ) | |
2345 return; | |
2346 | |
2347 // Make sure all the entry points are correctly aligned for patching. | |
2348 NativeJump::check_verified_entry_alignment(entry_point(), verified_entry_point()); | |
2349 | |
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2350 // assert(method()->is_oop(), "must be valid"); |
0 | 2351 |
2352 ResourceMark rm; | |
2353 | |
2354 if (!CodeCache::contains(this)) { | |
1490
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|
2355 fatal(err_msg("nmethod at " INTPTR_FORMAT " not in zone", this)); |
0 | 2356 } |
2357 | |
2358 if(is_native_method() ) | |
2359 return; | |
2360 | |
2361 nmethod* nm = CodeCache::find_nmethod(verified_entry_point()); | |
2362 if (nm != this) { | |
1490
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2363 fatal(err_msg("findNMethod did not find this nmethod (" INTPTR_FORMAT ")", |
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|
2364 this)); |
0 | 2365 } |
2366 | |
2367 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
2368 if (! p->verify(this)) { | |
2369 tty->print_cr("\t\tin nmethod at " INTPTR_FORMAT " (pcs)", this); | |
2370 } | |
2371 } | |
2372 | |
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2373 VerifyOopsClosure voc(this); |
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2374 oops_do(&voc); |
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2375 assert(voc.ok(), "embedded oops must be OK"); |
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2376 verify_scavenge_root_oops(); |
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2377 |
0 | 2378 verify_scopes(); |
2379 } | |
2380 | |
2381 | |
2382 void nmethod::verify_interrupt_point(address call_site) { | |
13071
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|
2383 // Verify IC only when nmethod installation is finished. |
14212 | 2384 bool is_installed = (method()->code() == this) // nmethod is in state 'in_use' and installed |
2385 || !this->is_in_use(); // nmethod is installed, but not in 'in_use' state | |
13071
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2386 if (is_installed) { |
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2387 Thread *cur = Thread::current(); |
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2388 if (CompiledIC_lock->owner() == cur || |
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2389 ((cur->is_VM_thread() || cur->is_ConcurrentGC_thread()) && |
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2390 SafepointSynchronize::is_at_safepoint())) { |
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2391 CompiledIC_at(this, call_site); |
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2392 CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops()); |
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2393 } else { |
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2394 MutexLocker ml_verify (CompiledIC_lock); |
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2395 CompiledIC_at(this, call_site); |
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2396 } |
0 | 2397 } |
13071
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2398 |
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2399 PcDesc* pd = pc_desc_at(nativeCall_at(call_site)->return_address()); |
0 | 2400 assert(pd != NULL, "PcDesc must exist"); |
2401 for (ScopeDesc* sd = new ScopeDesc(this, pd->scope_decode_offset(), | |
1253
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diff
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2402 pd->obj_decode_offset(), pd->should_reexecute(), |
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|
2403 pd->return_oop()); |
0 | 2404 !sd->is_top(); sd = sd->sender()) { |
2405 sd->verify(); | |
2406 } | |
2407 } | |
2408 | |
2409 void nmethod::verify_scopes() { | |
2410 if( !method() ) return; // Runtime stubs have no scope | |
2411 if (method()->is_native()) return; // Ignore stub methods. | |
2412 // iterate through all interrupt point | |
2413 // and verify the debug information is valid. | |
2414 RelocIterator iter((nmethod*)this); | |
2415 while (iter.next()) { | |
2416 address stub = NULL; | |
2417 switch (iter.type()) { | |
2418 case relocInfo::virtual_call_type: | |
2419 verify_interrupt_point(iter.addr()); | |
2420 break; | |
2421 case relocInfo::opt_virtual_call_type: | |
2422 stub = iter.opt_virtual_call_reloc()->static_stub(); | |
2423 verify_interrupt_point(iter.addr()); | |
2424 break; | |
2425 case relocInfo::static_call_type: | |
2426 stub = iter.static_call_reloc()->static_stub(); | |
2427 //verify_interrupt_point(iter.addr()); | |
2428 break; | |
2429 case relocInfo::runtime_call_type: | |
2430 address destination = iter.reloc()->value(); | |
2431 // Right now there is no way to find out which entries support | |
2432 // an interrupt point. It would be nice if we had this | |
2433 // information in a table. | |
2434 break; | |
2435 } | |
2436 assert(stub == NULL || stub_contains(stub), "static call stub outside stub section"); | |
2437 } | |
2438 } | |
2439 | |
2440 | |
2441 // ----------------------------------------------------------------------------- | |
2442 // Non-product code | |
2443 #ifndef PRODUCT | |
2444 | |
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2445 class DebugScavengeRoot: public OopClosure { |
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2446 nmethod* _nm; |
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|
2447 bool _ok; |
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|
2448 public: |
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|
2449 DebugScavengeRoot(nmethod* nm) : _nm(nm), _ok(true) { } |
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|
2450 bool ok() { return _ok; } |
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|
2451 virtual void do_oop(oop* p) { |
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|
2452 if ((*p) == NULL || !(*p)->is_scavengable()) return; |
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|
2453 if (_ok) { |
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|
2454 _nm->print_nmethod(true); |
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diff
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|
2455 _ok = false; |
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|
2456 } |
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diff
changeset
|
2457 tty->print_cr("*** scavengable oop "PTR_FORMAT" found at "PTR_FORMAT" (offset %d)", |
12316
190899198332
7195622: CheckUnhandledOops has limited usefulness now
hseigel
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12175
diff
changeset
|
2458 (void *)(*p), (intptr_t)p, (int)((intptr_t)p - (intptr_t)_nm)); |
989
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diff
changeset
|
2459 (*p)->print(); |
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diff
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|
2460 } |
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|
2461 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
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|
2462 }; |
0 | 2463 |
989
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|
2464 void nmethod::verify_scavenge_root_oops() { |
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|
2465 if (!on_scavenge_root_list()) { |
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|
2466 // Actually look inside, to verify the claim that it's clean. |
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|
2467 DebugScavengeRoot debug_scavenge_root(this); |
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|
2468 oops_do(&debug_scavenge_root); |
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|
2469 if (!debug_scavenge_root.ok()) |
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diff
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|
2470 fatal("found an unadvertised bad scavengable oop in the code cache"); |
0 | 2471 } |
989
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diff
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|
2472 assert(scavenge_root_not_marked(), ""); |
0 | 2473 } |
2474 | |
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|
2475 #endif // PRODUCT |
0 | 2476 |
2477 // Printing operations | |
2478 | |
2479 void nmethod::print() const { | |
2480 ResourceMark rm; | |
2481 ttyLocker ttyl; // keep the following output all in one block | |
2482 | |
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
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2376
diff
changeset
|
2483 tty->print("Compiled method "); |
0 | 2484 |
2485 if (is_compiled_by_c1()) { | |
2486 tty->print("(c1) "); | |
2487 } else if (is_compiled_by_c2()) { | |
2488 tty->print("(c2) "); | |
1692 | 2489 } else if (is_compiled_by_shark()) { |
2490 tty->print("(shark) "); | |
0 | 2491 } else { |
2492 tty->print("(nm) "); | |
2493 } | |
2494 | |
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
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2376
diff
changeset
|
2495 print_on(tty, NULL); |
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
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diff
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|
2496 |
0 | 2497 if (WizardMode) { |
2498 tty->print("((nmethod*) "INTPTR_FORMAT ") ", this); | |
2499 tty->print(" for method " INTPTR_FORMAT , (address)method()); | |
2500 tty->print(" { "); | |
2501 if (is_in_use()) tty->print("in_use "); | |
2502 if (is_not_entrant()) tty->print("not_entrant "); | |
2503 if (is_zombie()) tty->print("zombie "); | |
2504 if (is_unloaded()) tty->print("unloaded "); | |
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|
2505 if (on_scavenge_root_list()) tty->print("scavenge_root "); |
0 | 2506 tty->print_cr("}:"); |
2507 } | |
2508 if (size () > 0) tty->print_cr(" total in heap [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2509 (address)this, | |
2510 (address)this + size(), | |
2511 size()); | |
2512 if (relocation_size () > 0) tty->print_cr(" relocation [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2513 relocation_begin(), | |
2514 relocation_end(), | |
2515 relocation_size()); | |
1762
0878d7bae69f
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1748
diff
changeset
|
2516 if (consts_size () > 0) tty->print_cr(" constants [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
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1748
diff
changeset
|
2517 consts_begin(), |
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
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1748
diff
changeset
|
2518 consts_end(), |
0878d7bae69f
6961697: move nmethod constants section before instruction section
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1748
diff
changeset
|
2519 consts_size()); |
1748 | 2520 if (insts_size () > 0) tty->print_cr(" main code [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
2521 insts_begin(), | |
2522 insts_end(), | |
2523 insts_size()); | |
0 | 2524 if (stub_size () > 0) tty->print_cr(" stub code [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
2525 stub_begin(), | |
2526 stub_end(), | |
2527 stub_size()); | |
1563
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
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1538
diff
changeset
|
2528 if (oops_size () > 0) tty->print_cr(" oops [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
1a5913bf5e19
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1538
diff
changeset
|
2529 oops_begin(), |
1a5913bf5e19
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1538
diff
changeset
|
2530 oops_end(), |
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diff
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|
2531 oops_size()); |
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|
2532 if (metadata_size () > 0) tty->print_cr(" metadata [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
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|
2533 metadata_begin(), |
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|
2534 metadata_end(), |
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|
2535 metadata_size()); |
0 | 2536 if (scopes_data_size () > 0) tty->print_cr(" scopes data [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
2537 scopes_data_begin(), | |
2538 scopes_data_end(), | |
2539 scopes_data_size()); | |
2540 if (scopes_pcs_size () > 0) tty->print_cr(" scopes pcs [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2541 scopes_pcs_begin(), | |
2542 scopes_pcs_end(), | |
2543 scopes_pcs_size()); | |
2544 if (dependencies_size () > 0) tty->print_cr(" dependencies [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2545 dependencies_begin(), | |
2546 dependencies_end(), | |
2547 dependencies_size()); | |
2548 if (handler_table_size() > 0) tty->print_cr(" handler table [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2549 handler_table_begin(), | |
2550 handler_table_end(), | |
2551 handler_table_size()); | |
2552 if (nul_chk_table_size() > 0) tty->print_cr(" nul chk table [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2553 nul_chk_table_begin(), | |
2554 nul_chk_table_end(), | |
2555 nul_chk_table_size()); | |
2556 } | |
2557 | |
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|
2558 void nmethod::print_code() { |
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changeset
|
2559 HandleMark hm; |
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diff
changeset
|
2560 ResourceMark m; |
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diff
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|
2561 Disassembler::decode(this); |
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|
2562 } |
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|
2563 |
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|
2564 |
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|
2565 #ifndef PRODUCT |
0 | 2566 |
2567 void nmethod::print_scopes() { | |
2568 // Find the first pc desc for all scopes in the code and print it. | |
2569 ResourceMark rm; | |
2570 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
2571 if (p->scope_decode_offset() == DebugInformationRecorder::serialized_null) | |
2572 continue; | |
2573 | |
2574 ScopeDesc* sd = scope_desc_at(p->real_pc(this)); | |
2575 sd->print_on(tty, p); | |
2576 } | |
2577 } | |
2578 | |
2579 void nmethod::print_dependencies() { | |
2580 ResourceMark rm; | |
2581 ttyLocker ttyl; // keep the following output all in one block | |
2582 tty->print_cr("Dependencies:"); | |
2583 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
2584 deps.print_dependency(); | |
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2585 Klass* ctxk = deps.context_type(); |
0 | 2586 if (ctxk != NULL) { |
6983 | 2587 if (ctxk->oop_is_instance() && ((InstanceKlass*)ctxk)->is_dependent_nmethod(this)) { |
2588 tty->print_cr(" [nmethod<=klass]%s", ctxk->external_name()); | |
0 | 2589 } |
2590 } | |
2591 deps.log_dependency(); // put it into the xml log also | |
2592 } | |
2593 } | |
2594 | |
2595 | |
2596 void nmethod::print_relocations() { | |
2597 ResourceMark m; // in case methods get printed via the debugger | |
2598 tty->print_cr("relocations:"); | |
2599 RelocIterator iter(this); | |
2600 iter.print(); | |
2601 if (UseRelocIndex) { | |
2602 jint* index_end = (jint*)relocation_end() - 1; | |
2603 jint index_size = *index_end; | |
2604 jint* index_start = (jint*)( (address)index_end - index_size ); | |
2605 tty->print_cr(" index @" INTPTR_FORMAT ": index_size=%d", index_start, index_size); | |
2606 if (index_size > 0) { | |
2607 jint* ip; | |
2608 for (ip = index_start; ip+2 <= index_end; ip += 2) | |
2609 tty->print_cr(" (%d %d) addr=" INTPTR_FORMAT " @" INTPTR_FORMAT, | |
2610 ip[0], | |
2611 ip[1], | |
2612 header_end()+ip[0], | |
2613 relocation_begin()-1+ip[1]); | |
2614 for (; ip < index_end; ip++) | |
2615 tty->print_cr(" (%d ?)", ip[0]); | |
10973
ef57c43512d6
8014431: cleanup warnings indicated by the -Wunused-value compiler option on linux
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10390
diff
changeset
|
2616 tty->print_cr(" @" INTPTR_FORMAT ": index_size=%d", ip, *ip); |
ef57c43512d6
8014431: cleanup warnings indicated by the -Wunused-value compiler option on linux
ccheung
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10390
diff
changeset
|
2617 ip++; |
0 | 2618 tty->print_cr("reloc_end @" INTPTR_FORMAT ":", ip); |
2619 } | |
2620 } | |
2621 } | |
2622 | |
2623 | |
2624 void nmethod::print_pcs() { | |
2625 ResourceMark m; // in case methods get printed via debugger | |
2626 tty->print_cr("pc-bytecode offsets:"); | |
2627 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
2628 p->print(this); | |
2629 } | |
2630 } | |
2631 | |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2632 #endif // PRODUCT |
0 | 2633 |
2634 const char* nmethod::reloc_string_for(u_char* begin, u_char* end) { | |
2635 RelocIterator iter(this, begin, end); | |
2636 bool have_one = false; | |
2637 while (iter.next()) { | |
2638 have_one = true; | |
2639 switch (iter.type()) { | |
2640 case relocInfo::none: return "no_reloc"; | |
2641 case relocInfo::oop_type: { | |
2642 stringStream st; | |
2643 oop_Relocation* r = iter.oop_reloc(); | |
2644 oop obj = r->oop_value(); | |
2645 st.print("oop("); | |
2646 if (obj == NULL) st.print("NULL"); | |
2647 else obj->print_value_on(&st); | |
2648 st.print(")"); | |
2649 return st.as_string(); | |
2650 } | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2651 case relocInfo::metadata_type: { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2652 stringStream st; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6266
diff
changeset
|
2653 metadata_Relocation* r = iter.metadata_reloc(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2654 Metadata* obj = r->metadata_value(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2655 st.print("metadata("); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2656 if (obj == NULL) st.print("NULL"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2657 else obj->print_value_on(&st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2658 st.print(")"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2659 return st.as_string(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6266
diff
changeset
|
2660 } |
0 | 2661 case relocInfo::virtual_call_type: return "virtual_call"; |
2662 case relocInfo::opt_virtual_call_type: return "optimized virtual_call"; | |
2663 case relocInfo::static_call_type: return "static_call"; | |
2664 case relocInfo::static_stub_type: return "static_stub"; | |
2665 case relocInfo::runtime_call_type: return "runtime_call"; | |
2666 case relocInfo::external_word_type: return "external_word"; | |
2667 case relocInfo::internal_word_type: return "internal_word"; | |
2668 case relocInfo::section_word_type: return "section_word"; | |
2669 case relocInfo::poll_type: return "poll"; | |
2670 case relocInfo::poll_return_type: return "poll_return"; | |
2671 case relocInfo::type_mask: return "type_bit_mask"; | |
2672 } | |
2673 } | |
2674 return have_one ? "other" : NULL; | |
2675 } | |
2676 | |
2677 // Return a the last scope in (begin..end] | |
2678 ScopeDesc* nmethod::scope_desc_in(address begin, address end) { | |
2679 PcDesc* p = pc_desc_near(begin+1); | |
2680 if (p != NULL && p->real_pc(this) <= end) { | |
2681 return new ScopeDesc(this, p->scope_decode_offset(), | |
1253
f70b0d9ab095
6910618: C2: Error: assert(d->is_oop(),"JVM_ArrayCopy: dst not an oop")
kvn
parents:
1250
diff
changeset
|
2682 p->obj_decode_offset(), p->should_reexecute(), |
f70b0d9ab095
6910618: C2: Error: assert(d->is_oop(),"JVM_ArrayCopy: dst not an oop")
kvn
parents:
1250
diff
changeset
|
2683 p->return_oop()); |
0 | 2684 } |
2685 return NULL; | |
2686 } | |
2687 | |
6796
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
parents:
6792
diff
changeset
|
2688 void nmethod::print_nmethod_labels(outputStream* stream, address block_begin) const { |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2689 if (block_begin == entry_point()) stream->print_cr("[Entry Point]"); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2690 if (block_begin == verified_entry_point()) stream->print_cr("[Verified Entry Point]"); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2691 if (block_begin == exception_begin()) stream->print_cr("[Exception Handler]"); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2692 if (block_begin == stub_begin()) stream->print_cr("[Stub Code]"); |
1204 | 2693 if (block_begin == deopt_handler_begin()) stream->print_cr("[Deopt Handler Code]"); |
1691
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
twisti
parents:
1644
diff
changeset
|
2694 |
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
twisti
parents:
1644
diff
changeset
|
2695 if (has_method_handle_invokes()) |
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
twisti
parents:
1644
diff
changeset
|
2696 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
|
2697 |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2698 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
|
2699 |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2700 if (block_begin == entry_point()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2701 methodHandle m = method(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2702 if (m.not_null()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2703 stream->print(" # "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2704 m->print_value_on(stream); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2705 stream->cr(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2706 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2707 if (m.not_null() && !is_osr_method()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2708 ResourceMark rm; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2709 int sizeargs = m->size_of_parameters(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2710 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
|
2711 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, sizeargs); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2712 { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2713 int sig_index = 0; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2714 if (!m->is_static()) |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2715 sig_bt[sig_index++] = T_OBJECT; // 'this' |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2716 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
|
2717 BasicType t = ss.type(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2718 sig_bt[sig_index++] = t; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2719 if (type2size[t] == 2) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2720 sig_bt[sig_index++] = T_VOID; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2721 } else { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2722 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
|
2723 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2724 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2725 assert(sig_index == sizeargs, ""); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2726 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2727 const char* spname = "sp"; // make arch-specific? |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2728 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
|
2729 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
|
2730 int tab1 = 14, tab2 = 24; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2731 int sig_index = 0; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2732 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
|
2733 bool did_old_sp = false; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2734 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
|
2735 bool at_this = (arg_index == -1); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2736 bool at_old_sp = false; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2737 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
|
2738 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
|
2739 if (at_this) |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2740 stream->print(" # this: "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2741 else |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2742 stream->print(" # parm%d: ", arg_index); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2743 stream->move_to(tab1); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2744 VMReg fst = regs[sig_index].first(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2745 VMReg snd = regs[sig_index].second(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2746 if (fst->is_reg()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2747 stream->print("%s", fst->name()); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2748 if (snd->is_valid()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2749 stream->print(":%s", snd->name()); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2750 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2751 } else if (fst->is_stack()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2752 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
|
2753 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
|
2754 stream->print("[%s+0x%x]", spname, offset); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2755 } else { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2756 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
|
2757 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2758 stream->print(" "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2759 stream->move_to(tab2); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2760 stream->print("= "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2761 if (at_this) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2762 m->method_holder()->print_value_on(stream); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2763 } else { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2764 bool did_name = false; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2765 if (!at_this && ss.is_object()) { |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2142
diff
changeset
|
2766 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
|
2767 if (name != NULL) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2768 name->print_value_on(stream); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2769 did_name = true; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2770 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2771 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2772 if (!did_name) |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2773 stream->print("%s", type2name(t)); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2774 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2775 if (at_old_sp) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2776 stream->print(" (%s of caller)", spname); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
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2777 did_old_sp = true; |
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2778 } |
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2779 stream->cr(); |
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2780 sig_index += type2size[t]; |
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2781 arg_index += 1; |
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2782 if (!at_this) ss.next(); |
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2783 } |
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2784 if (!did_old_sp) { |
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2785 stream->print(" # "); |
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2786 stream->move_to(tab1); |
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2787 stream->print("[%s+0x%x]", spname, stack_slot_offset); |
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2788 stream->print(" (%s of caller)", spname); |
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2789 stream->cr(); |
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2790 } |
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2791 } |
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2792 } |
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2793 } |
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2794 |
0 | 2795 void nmethod::print_code_comment_on(outputStream* st, int column, u_char* begin, u_char* end) { |
2796 // First, find an oopmap in (begin, end]. | |
2797 // We use the odd half-closed interval so that oop maps and scope descs | |
2798 // which are tied to the byte after a call are printed with the call itself. | |
1748 | 2799 address base = code_begin(); |
0 | 2800 OopMapSet* oms = oop_maps(); |
2801 if (oms != NULL) { | |
2802 for (int i = 0, imax = oms->size(); i < imax; i++) { | |
2803 OopMap* om = oms->at(i); | |
2804 address pc = base + om->offset(); | |
2805 if (pc > begin) { | |
2806 if (pc <= end) { | |
100
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2807 st->move_to(column); |
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2808 st->print("; "); |
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2809 om->print_on(st); |
0 | 2810 } |
2811 break; | |
2812 } | |
2813 } | |
2814 } | |
100
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2815 |
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2816 // Print any debug info present at this pc. |
0 | 2817 ScopeDesc* sd = scope_desc_in(begin, end); |
2818 if (sd != NULL) { | |
100
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2819 st->move_to(column); |
0 | 2820 if (sd->bci() == SynchronizationEntryBCI) { |
2821 st->print(";*synchronization entry"); | |
2822 } else { | |
6725
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2823 if (sd->method() == NULL) { |
100
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2824 st->print("method is NULL"); |
0 | 2825 } else if (sd->method()->is_native()) { |
100
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2826 st->print("method is native"); |
0 | 2827 } else { |
2142 | 2828 Bytecodes::Code bc = sd->method()->java_code_at(sd->bci()); |
0 | 2829 st->print(";*%s", Bytecodes::name(bc)); |
2830 switch (bc) { | |
2831 case Bytecodes::_invokevirtual: | |
2832 case Bytecodes::_invokespecial: | |
2833 case Bytecodes::_invokestatic: | |
2834 case Bytecodes::_invokeinterface: | |
2835 { | |
2142 | 2836 Bytecode_invoke invoke(sd->method(), sd->bci()); |
0 | 2837 st->print(" "); |
2142 | 2838 if (invoke.name() != NULL) |
2839 invoke.name()->print_symbol_on(st); | |
0 | 2840 else |
2841 st->print("<UNKNOWN>"); | |
2842 break; | |
2843 } | |
2844 case Bytecodes::_getfield: | |
2845 case Bytecodes::_putfield: | |
2846 case Bytecodes::_getstatic: | |
2847 case Bytecodes::_putstatic: | |
2848 { | |
2142 | 2849 Bytecode_field field(sd->method(), sd->bci()); |
0 | 2850 st->print(" "); |
2142 | 2851 if (field.name() != NULL) |
2852 field.name()->print_symbol_on(st); | |
0 | 2853 else |
2854 st->print("<UNKNOWN>"); | |
2855 } | |
2856 } | |
2857 } | |
2858 } | |
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2859 |
0 | 2860 // Print all scopes |
2861 for (;sd != NULL; sd = sd->sender()) { | |
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2862 st->move_to(column); |
0 | 2863 st->print("; -"); |
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2864 if (sd->method() == NULL) { |
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2865 st->print("method is NULL"); |
0 | 2866 } else { |
2867 sd->method()->print_short_name(st); | |
2868 } | |
2869 int lineno = sd->method()->line_number_from_bci(sd->bci()); | |
2870 if (lineno != -1) { | |
2871 st->print("@%d (line %d)", sd->bci(), lineno); | |
2872 } else { | |
2873 st->print("@%d", sd->bci()); | |
2874 } | |
2875 st->cr(); | |
2876 } | |
2877 } | |
2878 | |
2879 // Print relocation information | |
2880 const char* str = reloc_string_for(begin, end); | |
2881 if (str != NULL) { | |
2882 if (sd != NULL) st->cr(); | |
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2883 st->move_to(column); |
0 | 2884 st->print("; {%s}", str); |
2885 } | |
1748 | 2886 int cont_offset = ImplicitExceptionTable(this).at(begin - code_begin()); |
0 | 2887 if (cont_offset != 0) { |
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2888 st->move_to(column); |
1748 | 2889 st->print("; implicit exception: dispatches to " INTPTR_FORMAT, code_begin() + cont_offset); |
0 | 2890 } |
2891 | |
2892 } | |
2893 | |
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2894 #ifndef PRODUCT |
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2895 |
0 | 2896 void nmethod::print_value_on(outputStream* st) const { |
2405
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|
2897 st->print("nmethod"); |
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|
2898 print_on(st, NULL); |
0 | 2899 } |
2900 | |
2901 void nmethod::print_calls(outputStream* st) { | |
2902 RelocIterator iter(this); | |
2903 while (iter.next()) { | |
2904 switch (iter.type()) { | |
2905 case relocInfo::virtual_call_type: | |
2906 case relocInfo::opt_virtual_call_type: { | |
2907 VerifyMutexLocker mc(CompiledIC_lock); | |
2908 CompiledIC_at(iter.reloc())->print(); | |
2909 break; | |
2910 } | |
2911 case relocInfo::static_call_type: | |
2912 st->print_cr("Static call at " INTPTR_FORMAT, iter.reloc()->addr()); | |
2913 compiledStaticCall_at(iter.reloc())->print(); | |
2914 break; | |
2915 } | |
2916 } | |
2917 } | |
2918 | |
2919 void nmethod::print_handler_table() { | |
2920 ExceptionHandlerTable(this).print(); | |
2921 } | |
2922 | |
2923 void nmethod::print_nul_chk_table() { | |
1748 | 2924 ImplicitExceptionTable(this).print(code_begin()); |
0 | 2925 } |
2926 | |
2927 void nmethod::print_statistics() { | |
2928 ttyLocker ttyl; | |
2929 if (xtty != NULL) xtty->head("statistics type='nmethod'"); | |
2930 nmethod_stats.print_native_nmethod_stats(); | |
2931 nmethod_stats.print_nmethod_stats(); | |
2932 DebugInformationRecorder::print_statistics(); | |
2933 nmethod_stats.print_pc_stats(); | |
2934 Dependencies::print_statistics(); | |
2935 if (xtty != NULL) xtty->tail("statistics"); | |
2936 } | |
2937 | |
2938 #endif // PRODUCT |