Mercurial > hg > truffle
annotate src/share/vm/code/nmethod.cpp @ 11177:d0aeaf72c7bd
Merge.
author | Doug Simon <doug.simon@oracle.com> |
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date | Mon, 05 Aug 2013 11:25:14 +0200 |
parents | 6b0fd0964b87 f22cbff51c12 |
children | cefad50507d8 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "code/codeCache.hpp" | |
27 #include "code/compiledIC.hpp" | |
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28 #include "code/dependencies.hpp" |
1972 | 29 #include "code/nmethod.hpp" |
30 #include "code/scopeDesc.hpp" | |
31 #include "compiler/abstractCompiler.hpp" | |
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32 #include "compiler/compileBroker.hpp" |
1972 | 33 #include "compiler/compileLog.hpp" |
34 #include "compiler/compilerOracle.hpp" | |
35 #include "compiler/disassembler.hpp" | |
36 #include "interpreter/bytecode.hpp" | |
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37 #include "oops/methodData.hpp" |
1972 | 38 #include "prims/jvmtiRedefineClassesTrace.hpp" |
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39 #include "prims/jvmtiImpl.hpp" |
1972 | 40 #include "runtime/sharedRuntime.hpp" |
41 #include "runtime/sweeper.hpp" | |
42 #include "utilities/dtrace.hpp" | |
43 #include "utilities/events.hpp" | |
44 #include "utilities/xmlstream.hpp" | |
45 #ifdef SHARK | |
46 #include "shark/sharkCompiler.hpp" | |
47 #endif | |
9707 | 48 #ifdef GRAAL |
49 #include "graal/graalJavaAccess.hpp" | |
50 #endif | |
0 | 51 |
52 #ifdef DTRACE_ENABLED | |
53 | |
54 // Only bother with this argument setup if dtrace is available | |
55 | |
4006 | 56 #ifndef USDT2 |
0 | 57 HS_DTRACE_PROBE_DECL8(hotspot, compiled__method__load, |
58 const char*, int, const char*, int, const char*, int, void*, size_t); | |
59 | |
60 HS_DTRACE_PROBE_DECL6(hotspot, compiled__method__unload, | |
61 char*, int, char*, int, char*, int); | |
62 | |
63 #define DTRACE_METHOD_UNLOAD_PROBE(method) \ | |
64 { \ | |
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65 Method* m = (method); \ |
0 | 66 if (m != NULL) { \ |
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67 Symbol* klass_name = m->klass_name(); \ |
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68 Symbol* name = m->name(); \ |
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69 Symbol* signature = m->signature(); \ |
0 | 70 HS_DTRACE_PROBE6(hotspot, compiled__method__unload, \ |
71 klass_name->bytes(), klass_name->utf8_length(), \ | |
72 name->bytes(), name->utf8_length(), \ | |
73 signature->bytes(), signature->utf8_length()); \ | |
74 } \ | |
75 } | |
4006 | 76 #else /* USDT2 */ |
77 #define DTRACE_METHOD_UNLOAD_PROBE(method) \ | |
78 { \ | |
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79 Method* m = (method); \ |
4006 | 80 if (m != NULL) { \ |
81 Symbol* klass_name = m->klass_name(); \ | |
82 Symbol* name = m->name(); \ | |
83 Symbol* signature = m->signature(); \ | |
84 HOTSPOT_COMPILED_METHOD_UNLOAD( \ | |
85 (char *) klass_name->bytes(), klass_name->utf8_length(), \ | |
86 (char *) name->bytes(), name->utf8_length(), \ | |
87 (char *) signature->bytes(), signature->utf8_length()); \ | |
88 } \ | |
89 } | |
90 #endif /* USDT2 */ | |
0 | 91 |
92 #else // ndef DTRACE_ENABLED | |
93 | |
94 #define DTRACE_METHOD_UNLOAD_PROBE(method) | |
95 | |
96 #endif | |
97 | |
98 bool nmethod::is_compiled_by_c1() const { | |
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99 if (compiler() == NULL || method() == NULL) return false; // can happen during debug printing |
0 | 100 if (is_native_method()) return false; |
101 return compiler()->is_c1(); | |
102 } | |
9707 | 103 bool nmethod::is_compiled_by_graal() const { |
104 if (compiler() == NULL || method() == NULL) return false; // can happen during debug printing | |
105 if (is_native_method()) return false; | |
106 return compiler()->is_graal(); | |
107 } | |
0 | 108 bool nmethod::is_compiled_by_c2() const { |
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109 if (compiler() == NULL || method() == NULL) return false; // can happen during debug printing |
0 | 110 if (is_native_method()) return false; |
111 return compiler()->is_c2(); | |
112 } | |
1692 | 113 bool nmethod::is_compiled_by_shark() const { |
114 if (is_native_method()) return false; | |
115 assert(compiler() != NULL, "must be"); | |
116 return compiler()->is_shark(); | |
117 } | |
0 | 118 |
119 | |
120 | |
121 //--------------------------------------------------------------------------------- | |
122 // NMethod statistics | |
123 // They are printed under various flags, including: | |
124 // PrintC1Statistics, PrintOptoStatistics, LogVMOutput, and LogCompilation. | |
125 // (In the latter two cases, they like other stats are printed to the log only.) | |
126 | |
127 // These variables are put into one block to reduce relocations | |
128 // and make it simpler to print from the debugger. | |
129 static | |
130 struct nmethod_stats_struct { | |
131 int nmethod_count; | |
132 int total_size; | |
133 int relocation_size; | |
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134 int consts_size; |
1748 | 135 int insts_size; |
0 | 136 int stub_size; |
137 int scopes_data_size; | |
138 int scopes_pcs_size; | |
139 int dependencies_size; | |
140 int handler_table_size; | |
141 int nul_chk_table_size; | |
142 int oops_size; | |
143 | |
144 void note_nmethod(nmethod* nm) { | |
145 nmethod_count += 1; | |
146 total_size += nm->size(); | |
147 relocation_size += nm->relocation_size(); | |
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148 consts_size += nm->consts_size(); |
1748 | 149 insts_size += nm->insts_size(); |
0 | 150 stub_size += nm->stub_size(); |
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151 oops_size += nm->oops_size(); |
0 | 152 scopes_data_size += nm->scopes_data_size(); |
153 scopes_pcs_size += nm->scopes_pcs_size(); | |
154 dependencies_size += nm->dependencies_size(); | |
155 handler_table_size += nm->handler_table_size(); | |
156 nul_chk_table_size += nm->nul_chk_table_size(); | |
157 } | |
158 void print_nmethod_stats() { | |
159 if (nmethod_count == 0) return; | |
160 tty->print_cr("Statistics for %d bytecoded nmethods:", nmethod_count); | |
161 if (total_size != 0) tty->print_cr(" total in heap = %d", total_size); | |
162 if (relocation_size != 0) tty->print_cr(" relocation = %d", relocation_size); | |
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163 if (consts_size != 0) tty->print_cr(" constants = %d", consts_size); |
1748 | 164 if (insts_size != 0) tty->print_cr(" main code = %d", insts_size); |
0 | 165 if (stub_size != 0) tty->print_cr(" stub code = %d", stub_size); |
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166 if (oops_size != 0) tty->print_cr(" oops = %d", oops_size); |
0 | 167 if (scopes_data_size != 0) tty->print_cr(" scopes data = %d", scopes_data_size); |
168 if (scopes_pcs_size != 0) tty->print_cr(" scopes pcs = %d", scopes_pcs_size); | |
169 if (dependencies_size != 0) tty->print_cr(" dependencies = %d", dependencies_size); | |
170 if (handler_table_size != 0) tty->print_cr(" handler table = %d", handler_table_size); | |
171 if (nul_chk_table_size != 0) tty->print_cr(" nul chk table = %d", nul_chk_table_size); | |
172 } | |
173 | |
174 int native_nmethod_count; | |
175 int native_total_size; | |
176 int native_relocation_size; | |
1748 | 177 int native_insts_size; |
0 | 178 int native_oops_size; |
179 void note_native_nmethod(nmethod* nm) { | |
180 native_nmethod_count += 1; | |
181 native_total_size += nm->size(); | |
182 native_relocation_size += nm->relocation_size(); | |
1748 | 183 native_insts_size += nm->insts_size(); |
0 | 184 native_oops_size += nm->oops_size(); |
185 } | |
186 void print_native_nmethod_stats() { | |
187 if (native_nmethod_count == 0) return; | |
188 tty->print_cr("Statistics for %d native nmethods:", native_nmethod_count); | |
189 if (native_total_size != 0) tty->print_cr(" N. total size = %d", native_total_size); | |
190 if (native_relocation_size != 0) tty->print_cr(" N. relocation = %d", native_relocation_size); | |
1748 | 191 if (native_insts_size != 0) tty->print_cr(" N. main code = %d", native_insts_size); |
0 | 192 if (native_oops_size != 0) tty->print_cr(" N. oops = %d", native_oops_size); |
193 } | |
194 | |
195 int pc_desc_resets; // number of resets (= number of caches) | |
196 int pc_desc_queries; // queries to nmethod::find_pc_desc | |
197 int pc_desc_approx; // number of those which have approximate true | |
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198 int pc_desc_repeats; // number of _pc_descs[0] hits |
0 | 199 int pc_desc_hits; // number of LRU cache hits |
200 int pc_desc_tests; // total number of PcDesc examinations | |
201 int pc_desc_searches; // total number of quasi-binary search steps | |
202 int pc_desc_adds; // number of LUR cache insertions | |
203 | |
204 void print_pc_stats() { | |
205 tty->print_cr("PcDesc Statistics: %d queries, %.2f comparisons per query", | |
206 pc_desc_queries, | |
207 (double)(pc_desc_tests + pc_desc_searches) | |
208 / pc_desc_queries); | |
209 tty->print_cr(" caches=%d queries=%d/%d, hits=%d+%d, tests=%d+%d, adds=%d", | |
210 pc_desc_resets, | |
211 pc_desc_queries, pc_desc_approx, | |
212 pc_desc_repeats, pc_desc_hits, | |
213 pc_desc_tests, pc_desc_searches, pc_desc_adds); | |
214 } | |
215 } nmethod_stats; | |
216 | |
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217 |
0 | 218 //--------------------------------------------------------------------------------- |
219 | |
220 | |
221 ExceptionCache::ExceptionCache(Handle exception, address pc, address handler) { | |
222 assert(pc != NULL, "Must be non null"); | |
223 assert(exception.not_null(), "Must be non null"); | |
224 assert(handler != NULL, "Must be non null"); | |
225 | |
226 _count = 0; | |
227 _exception_type = exception->klass(); | |
228 _next = NULL; | |
229 | |
230 add_address_and_handler(pc,handler); | |
231 } | |
232 | |
233 | |
234 address ExceptionCache::match(Handle exception, address pc) { | |
235 assert(pc != NULL,"Must be non null"); | |
236 assert(exception.not_null(),"Must be non null"); | |
237 if (exception->klass() == exception_type()) { | |
238 return (test_address(pc)); | |
239 } | |
240 | |
241 return NULL; | |
242 } | |
243 | |
244 | |
245 bool ExceptionCache::match_exception_with_space(Handle exception) { | |
246 assert(exception.not_null(),"Must be non null"); | |
247 if (exception->klass() == exception_type() && count() < cache_size) { | |
248 return true; | |
249 } | |
250 return false; | |
251 } | |
252 | |
253 | |
254 address ExceptionCache::test_address(address addr) { | |
255 for (int i=0; i<count(); i++) { | |
256 if (pc_at(i) == addr) { | |
257 return handler_at(i); | |
258 } | |
259 } | |
260 return NULL; | |
261 } | |
262 | |
263 | |
264 bool ExceptionCache::add_address_and_handler(address addr, address handler) { | |
265 if (test_address(addr) == handler) return true; | |
266 if (count() < cache_size) { | |
267 set_pc_at(count(),addr); | |
268 set_handler_at(count(), handler); | |
269 increment_count(); | |
270 return true; | |
271 } | |
272 return false; | |
273 } | |
274 | |
275 | |
276 // private method for handling exception cache | |
277 // These methods are private, and used to manipulate the exception cache | |
278 // directly. | |
279 ExceptionCache* nmethod::exception_cache_entry_for_exception(Handle exception) { | |
280 ExceptionCache* ec = exception_cache(); | |
281 while (ec != NULL) { | |
282 if (ec->match_exception_with_space(exception)) { | |
283 return ec; | |
284 } | |
285 ec = ec->next(); | |
286 } | |
287 return NULL; | |
288 } | |
289 | |
290 | |
291 //----------------------------------------------------------------------------- | |
292 | |
293 | |
294 // Helper used by both find_pc_desc methods. | |
295 static inline bool match_desc(PcDesc* pc, int pc_offset, bool approximate) { | |
296 NOT_PRODUCT(++nmethod_stats.pc_desc_tests); | |
297 if (!approximate) | |
298 return pc->pc_offset() == pc_offset; | |
299 else | |
300 return (pc-1)->pc_offset() < pc_offset && pc_offset <= pc->pc_offset(); | |
301 } | |
302 | |
303 void PcDescCache::reset_to(PcDesc* initial_pc_desc) { | |
304 if (initial_pc_desc == NULL) { | |
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305 _pc_descs[0] = NULL; // native method; no PcDescs at all |
0 | 306 return; |
307 } | |
308 NOT_PRODUCT(++nmethod_stats.pc_desc_resets); | |
309 // reset the cache by filling it with benign (non-null) values | |
310 assert(initial_pc_desc->pc_offset() < 0, "must be sentinel"); | |
311 for (int i = 0; i < cache_size; i++) | |
312 _pc_descs[i] = initial_pc_desc; | |
313 } | |
314 | |
315 PcDesc* PcDescCache::find_pc_desc(int pc_offset, bool approximate) { | |
316 NOT_PRODUCT(++nmethod_stats.pc_desc_queries); | |
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317 NOT_PRODUCT(if (approximate) ++nmethod_stats.pc_desc_approx); |
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318 |
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319 // Note: one might think that caching the most recently |
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320 // read value separately would be a win, but one would be |
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321 // wrong. When many threads are updating it, the cache |
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322 // line it's in would bounce between caches, negating |
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323 // any benefit. |
0 | 324 |
325 // In order to prevent race conditions do not load cache elements | |
326 // repeatedly, but use a local copy: | |
327 PcDesc* res; | |
328 | |
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329 // Step one: Check the most recently added value. |
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330 res = _pc_descs[0]; |
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331 if (res == NULL) return NULL; // native method; no PcDescs at all |
0 | 332 if (match_desc(res, pc_offset, approximate)) { |
333 NOT_PRODUCT(++nmethod_stats.pc_desc_repeats); | |
334 return res; | |
335 } | |
336 | |
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337 // Step two: Check the rest of the LRU cache. |
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338 for (int i = 1; i < cache_size; ++i) { |
0 | 339 res = _pc_descs[i]; |
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340 if (res->pc_offset() < 0) break; // optimization: skip empty cache |
0 | 341 if (match_desc(res, pc_offset, approximate)) { |
342 NOT_PRODUCT(++nmethod_stats.pc_desc_hits); | |
343 return res; | |
344 } | |
345 } | |
346 | |
347 // Report failure. | |
348 return NULL; | |
349 } | |
350 | |
351 void PcDescCache::add_pc_desc(PcDesc* pc_desc) { | |
352 NOT_PRODUCT(++nmethod_stats.pc_desc_adds); | |
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353 // Update the LRU cache by shifting pc_desc forward. |
0 | 354 for (int i = 0; i < cache_size; i++) { |
355 PcDesc* next = _pc_descs[i]; | |
356 _pc_descs[i] = pc_desc; | |
357 pc_desc = next; | |
358 } | |
359 } | |
360 | |
361 // adjust pcs_size so that it is a multiple of both oopSize and | |
362 // sizeof(PcDesc) (assumes that if sizeof(PcDesc) is not a multiple | |
363 // of oopSize, then 2*sizeof(PcDesc) is) | |
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364 static int adjust_pcs_size(int pcs_size) { |
0 | 365 int nsize = round_to(pcs_size, oopSize); |
366 if ((nsize % sizeof(PcDesc)) != 0) { | |
367 nsize = pcs_size + sizeof(PcDesc); | |
368 } | |
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369 assert((nsize % oopSize) == 0, "correct alignment"); |
0 | 370 return nsize; |
371 } | |
372 | |
373 //----------------------------------------------------------------------------- | |
374 | |
375 | |
376 void nmethod::add_exception_cache_entry(ExceptionCache* new_entry) { | |
377 assert(ExceptionCache_lock->owned_by_self(),"Must hold the ExceptionCache_lock"); | |
378 assert(new_entry != NULL,"Must be non null"); | |
379 assert(new_entry->next() == NULL, "Must be null"); | |
380 | |
381 if (exception_cache() != NULL) { | |
382 new_entry->set_next(exception_cache()); | |
383 } | |
384 set_exception_cache(new_entry); | |
385 } | |
386 | |
387 void nmethod::remove_from_exception_cache(ExceptionCache* ec) { | |
388 ExceptionCache* prev = NULL; | |
389 ExceptionCache* curr = exception_cache(); | |
390 assert(curr != NULL, "nothing to remove"); | |
391 // find the previous and next entry of ec | |
392 while (curr != ec) { | |
393 prev = curr; | |
394 curr = curr->next(); | |
395 assert(curr != NULL, "ExceptionCache not found"); | |
396 } | |
397 // now: curr == ec | |
398 ExceptionCache* next = curr->next(); | |
399 if (prev == NULL) { | |
400 set_exception_cache(next); | |
401 } else { | |
402 prev->set_next(next); | |
403 } | |
404 delete curr; | |
405 } | |
406 | |
407 | |
408 // public method for accessing the exception cache | |
409 // These are the public access methods. | |
410 address nmethod::handler_for_exception_and_pc(Handle exception, address pc) { | |
411 // We never grab a lock to read the exception cache, so we may | |
412 // have false negatives. This is okay, as it can only happen during | |
413 // the first few exception lookups for a given nmethod. | |
414 ExceptionCache* ec = exception_cache(); | |
415 while (ec != NULL) { | |
416 address ret_val; | |
417 if ((ret_val = ec->match(exception,pc)) != NULL) { | |
418 return ret_val; | |
419 } | |
420 ec = ec->next(); | |
421 } | |
422 return NULL; | |
423 } | |
424 | |
425 | |
426 void nmethod::add_handler_for_exception_and_pc(Handle exception, address pc, address handler) { | |
427 // There are potential race conditions during exception cache updates, so we | |
428 // must own the ExceptionCache_lock before doing ANY modifications. Because | |
605 | 429 // we don't lock during reads, it is possible to have several threads attempt |
0 | 430 // to update the cache with the same data. We need to check for already inserted |
431 // copies of the current data before adding it. | |
432 | |
433 MutexLocker ml(ExceptionCache_lock); | |
434 ExceptionCache* target_entry = exception_cache_entry_for_exception(exception); | |
435 | |
436 if (target_entry == NULL || !target_entry->add_address_and_handler(pc,handler)) { | |
437 target_entry = new ExceptionCache(exception,pc,handler); | |
438 add_exception_cache_entry(target_entry); | |
439 } | |
440 } | |
441 | |
442 | |
443 //-------------end of code for ExceptionCache-------------- | |
444 | |
445 | |
446 int nmethod::total_size() const { | |
447 return | |
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448 consts_size() + |
1748 | 449 insts_size() + |
0 | 450 stub_size() + |
451 scopes_data_size() + | |
452 scopes_pcs_size() + | |
453 handler_table_size() + | |
454 nul_chk_table_size(); | |
455 } | |
456 | |
457 const char* nmethod::compile_kind() const { | |
458 if (is_osr_method()) return "osr"; | |
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459 if (method() != NULL && is_native_method()) return "c2n"; |
0 | 460 return NULL; |
461 } | |
462 | |
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463 // Fill in default values for various flag fields |
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464 void nmethod::init_defaults() { |
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465 _state = alive; |
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466 _marked_for_reclamation = 0; |
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467 _has_flushed_dependencies = 0; |
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468 _speculatively_disconnected = 0; |
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469 _has_unsafe_access = 0; |
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470 _has_method_handle_invokes = 0; |
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471 _lazy_critical_native = 0; |
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472 _has_wide_vectors = 0; |
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473 _marked_for_deoptimization = 0; |
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474 _lock_count = 0; |
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475 _stack_traversal_mark = 0; |
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476 _unload_reported = false; // jvmti state |
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477 |
1726 | 478 #ifdef ASSERT |
479 _oops_are_stale = false; | |
480 #endif | |
481 | |
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482 _oops_do_mark_link = NULL; |
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483 _jmethod_id = NULL; |
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484 _osr_link = NULL; |
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485 _scavenge_root_link = NULL; |
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486 _scavenge_root_state = 0; |
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487 _saved_nmethod_link = NULL; |
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488 _compiler = NULL; |
9707 | 489 #ifdef GRAAL |
490 _graal_installed_code = NULL; | |
491 _triggered_deoptimizations = NULL; | |
492 #endif | |
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493 #ifdef HAVE_DTRACE_H |
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494 _trap_offset = 0; |
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495 #endif // def HAVE_DTRACE_H |
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496 } |
0 | 497 |
498 nmethod* nmethod::new_native_nmethod(methodHandle method, | |
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499 int compile_id, |
0 | 500 CodeBuffer *code_buffer, |
501 int vep_offset, | |
502 int frame_complete, | |
503 int frame_size, | |
504 ByteSize basic_lock_owner_sp_offset, | |
505 ByteSize basic_lock_sp_offset, | |
506 OopMapSet* oop_maps) { | |
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507 code_buffer->finalize_oop_references(method); |
0 | 508 // create nmethod |
509 nmethod* nm = NULL; | |
510 { | |
511 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
512 int native_nmethod_size = allocation_size(code_buffer, sizeof(nmethod)); | |
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513 CodeOffsets offsets; |
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514 offsets.set_value(CodeOffsets::Verified_Entry, vep_offset); |
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515 offsets.set_value(CodeOffsets::Frame_Complete, frame_complete); |
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516 nm = new (native_nmethod_size) nmethod(method(), native_nmethod_size, |
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517 compile_id, &offsets, |
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518 code_buffer, frame_size, |
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519 basic_lock_owner_sp_offset, |
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520 basic_lock_sp_offset, oop_maps); |
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521 if (nm != NULL) nmethod_stats.note_native_nmethod(nm); |
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522 if (PrintAssembly && nm != NULL) { |
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523 Disassembler::decode(nm); |
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524 } |
0 | 525 } |
526 // verify nmethod | |
527 debug_only(if (nm) nm->verify();) // might block | |
528 | |
529 if (nm != NULL) { | |
530 nm->log_new_nmethod(); | |
531 } | |
532 | |
533 return nm; | |
534 } | |
535 | |
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536 #ifdef HAVE_DTRACE_H |
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537 nmethod* nmethod::new_dtrace_nmethod(methodHandle method, |
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538 CodeBuffer *code_buffer, |
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539 int vep_offset, |
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540 int trap_offset, |
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541 int frame_complete, |
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542 int frame_size) { |
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543 code_buffer->finalize_oop_references(method); |
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544 // create nmethod |
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545 nmethod* nm = NULL; |
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546 { |
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547 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
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548 int nmethod_size = allocation_size(code_buffer, sizeof(nmethod)); |
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549 CodeOffsets offsets; |
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550 offsets.set_value(CodeOffsets::Verified_Entry, vep_offset); |
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551 offsets.set_value(CodeOffsets::Dtrace_trap, trap_offset); |
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552 offsets.set_value(CodeOffsets::Frame_Complete, frame_complete); |
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553 |
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554 nm = new (nmethod_size) nmethod(method(), nmethod_size, |
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555 &offsets, code_buffer, frame_size); |
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556 |
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557 if (nm != NULL) nmethod_stats.note_nmethod(nm); |
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558 if (PrintAssembly && nm != NULL) { |
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559 Disassembler::decode(nm); |
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560 } |
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561 } |
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562 // verify nmethod |
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563 debug_only(if (nm) nm->verify();) // might block |
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564 |
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565 if (nm != NULL) { |
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566 nm->log_new_nmethod(); |
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567 } |
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568 |
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569 return nm; |
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570 } |
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571 |
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572 #endif // def HAVE_DTRACE_H |
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573 |
0 | 574 nmethod* nmethod::new_nmethod(methodHandle method, |
575 int compile_id, | |
576 int entry_bci, | |
577 CodeOffsets* offsets, | |
578 int orig_pc_offset, | |
579 DebugInformationRecorder* debug_info, | |
580 Dependencies* dependencies, | |
581 CodeBuffer* code_buffer, int frame_size, | |
582 OopMapSet* oop_maps, | |
583 ExceptionHandlerTable* handler_table, | |
584 ImplicitExceptionTable* nul_chk_table, | |
585 AbstractCompiler* compiler, | |
9707 | 586 int comp_level, |
587 GrowableArray<jlong>* leaf_graph_ids | |
588 #ifdef GRAAL | |
589 , Handle installed_code, | |
590 Handle triggered_deoptimizations | |
591 #endif | |
0 | 592 ) |
593 { | |
594 assert(debug_info->oop_recorder() == code_buffer->oop_recorder(), "shared OR"); | |
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595 code_buffer->finalize_oop_references(method); |
9707 | 596 int leaf_graph_ids_size = leaf_graph_ids == NULL ? 0 : round_to(sizeof(jlong) * leaf_graph_ids->length(), oopSize); |
0 | 597 // create nmethod |
598 nmethod* nm = NULL; | |
599 { MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
600 int nmethod_size = | |
601 allocation_size(code_buffer, sizeof(nmethod)) | |
602 + adjust_pcs_size(debug_info->pcs_size()) | |
603 + round_to(dependencies->size_in_bytes() , oopSize) | |
604 + round_to(handler_table->size_in_bytes(), oopSize) | |
605 + round_to(nul_chk_table->size_in_bytes(), oopSize) | |
9707 | 606 + round_to(debug_info->data_size() , oopSize) |
8883 | 607 + leaf_graph_ids_size; |
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608 nm = new (nmethod_size) |
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609 nmethod(method(), nmethod_size, compile_id, entry_bci, offsets, |
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610 orig_pc_offset, debug_info, dependencies, code_buffer, frame_size, |
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611 oop_maps, |
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612 handler_table, |
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613 nul_chk_table, |
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614 compiler, |
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615 comp_level, |
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616 leaf_graph_ids |
9707 | 617 #ifdef GRAAL |
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618 , installed_code, |
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619 triggered_deoptimizations |
9707 | 620 #endif |
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621 ); |
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622 |
0 | 623 if (nm != NULL) { |
624 // To make dependency checking during class loading fast, record | |
625 // the nmethod dependencies in the classes it is dependent on. | |
626 // This allows the dependency checking code to simply walk the | |
627 // class hierarchy above the loaded class, checking only nmethods | |
628 // which are dependent on those classes. The slow way is to | |
629 // check every nmethod for dependencies which makes it linear in | |
630 // the number of methods compiled. For applications with a lot | |
631 // classes the slow way is too slow. | |
632 for (Dependencies::DepStream deps(nm); deps.next(); ) { | |
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633 Klass* klass = deps.context_type(); |
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634 if (klass == NULL) { |
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635 continue; // ignore things like evol_method |
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636 } |
0 | 637 |
638 // record this nmethod as dependent on this klass | |
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639 InstanceKlass::cast(klass)->add_dependent_nmethod(nm); |
0 | 640 } |
641 } | |
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642 if (nm != NULL) nmethod_stats.note_nmethod(nm); |
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643 if (PrintAssembly && nm != NULL) { |
0 | 644 Disassembler::decode(nm); |
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645 } |
0 | 646 } |
647 | |
648 // verify nmethod | |
649 debug_only(if (nm) nm->verify();) // might block | |
650 | |
651 if (nm != NULL) { | |
652 nm->log_new_nmethod(); | |
653 } | |
654 | |
655 // done | |
656 return nm; | |
657 } | |
658 | |
659 | |
660 // For native wrappers | |
661 nmethod::nmethod( | |
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662 Method* method, |
0 | 663 int nmethod_size, |
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664 int compile_id, |
0 | 665 CodeOffsets* offsets, |
666 CodeBuffer* code_buffer, | |
667 int frame_size, | |
668 ByteSize basic_lock_owner_sp_offset, | |
669 ByteSize basic_lock_sp_offset, | |
670 OopMapSet* oop_maps ) | |
671 : CodeBlob("native nmethod", code_buffer, sizeof(nmethod), | |
672 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, oop_maps), | |
2019 | 673 _native_receiver_sp_offset(basic_lock_owner_sp_offset), |
674 _native_basic_lock_sp_offset(basic_lock_sp_offset) | |
0 | 675 { |
676 { | |
677 debug_only(No_Safepoint_Verifier nsv;) | |
678 assert_locked_or_safepoint(CodeCache_lock); | |
679 | |
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680 init_defaults(); |
0 | 681 _method = method; |
682 _entry_bci = InvocationEntryBci; | |
683 // We have no exception handler or deopt handler make the | |
684 // values something that will never match a pc like the nmethod vtable entry | |
685 _exception_offset = 0; | |
686 _deoptimize_offset = 0; | |
1204 | 687 _deoptimize_mh_offset = 0; |
0 | 688 _orig_pc_offset = 0; |
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689 |
1748 | 690 _consts_offset = data_offset(); |
0 | 691 _stub_offset = data_offset(); |
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692 _oops_offset = data_offset(); |
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693 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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694 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
0 | 695 _scopes_pcs_offset = _scopes_data_offset; |
696 _dependencies_offset = _scopes_pcs_offset; | |
697 _handler_table_offset = _dependencies_offset; | |
698 _nul_chk_table_offset = _handler_table_offset; | |
9707 | 699 _leaf_graph_ids_offset = _nul_chk_table_offset; |
700 _nmethod_end_offset = _leaf_graph_ids_offset; | |
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701 _compile_id = compile_id; |
0 | 702 _comp_level = CompLevel_none; |
1748 | 703 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
704 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
0 | 705 _osr_entry_point = NULL; |
706 _exception_cache = NULL; | |
707 _pc_desc_cache.reset_to(NULL); | |
708 | |
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709 code_buffer->copy_values_to(this); |
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710 if (ScavengeRootsInCode && detect_scavenge_root_oops()) { |
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711 CodeCache::add_scavenge_root_nmethod(this); |
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712 } |
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713 debug_only(verify_scavenge_root_oops()); |
0 | 714 CodeCache::commit(this); |
715 } | |
716 | |
717 if (PrintNativeNMethods || PrintDebugInfo || PrintRelocations || PrintDependencies) { | |
718 ttyLocker ttyl; // keep the following output all in one block | |
719 // This output goes directly to the tty, not the compiler log. | |
720 // To enable tools to match it up with the compilation activity, | |
721 // be sure to tag this tty output with the compile ID. | |
722 if (xtty != NULL) { | |
723 xtty->begin_head("print_native_nmethod"); | |
724 xtty->method(_method); | |
725 xtty->stamp(); | |
726 xtty->end_head(" address='" INTPTR_FORMAT "'", (intptr_t) this); | |
727 } | |
728 // print the header part first | |
729 print(); | |
730 // then print the requested information | |
731 if (PrintNativeNMethods) { | |
732 print_code(); | |
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733 if (oop_maps != NULL) { |
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734 oop_maps->print(); |
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735 } |
0 | 736 } |
737 if (PrintRelocations) { | |
738 print_relocations(); | |
739 } | |
740 if (xtty != NULL) { | |
741 xtty->tail("print_native_nmethod"); | |
742 } | |
743 } | |
744 } | |
745 | |
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746 // For dtrace wrappers |
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747 #ifdef HAVE_DTRACE_H |
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748 nmethod::nmethod( |
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749 Method* method, |
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750 int nmethod_size, |
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751 CodeOffsets* offsets, |
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752 CodeBuffer* code_buffer, |
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753 int frame_size) |
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754 : CodeBlob("dtrace nmethod", code_buffer, sizeof(nmethod), |
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755 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, NULL), |
2019 | 756 _native_receiver_sp_offset(in_ByteSize(-1)), |
757 _native_basic_lock_sp_offset(in_ByteSize(-1)) | |
116
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758 { |
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759 { |
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760 debug_only(No_Safepoint_Verifier nsv;) |
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761 assert_locked_or_safepoint(CodeCache_lock); |
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762 |
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763 init_defaults(); |
116
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764 _method = method; |
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765 _entry_bci = InvocationEntryBci; |
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766 // We have no exception handler or deopt handler make the |
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767 // values something that will never match a pc like the nmethod vtable entry |
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768 _exception_offset = 0; |
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769 _deoptimize_offset = 0; |
1204 | 770 _deoptimize_mh_offset = 0; |
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771 _unwind_handler_offset = -1; |
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772 _trap_offset = offsets->value(CodeOffsets::Dtrace_trap); |
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773 _orig_pc_offset = 0; |
1748 | 774 _consts_offset = data_offset(); |
116
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775 _stub_offset = data_offset(); |
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776 _oops_offset = data_offset(); |
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777 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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778 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
116
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779 _scopes_pcs_offset = _scopes_data_offset; |
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780 _dependencies_offset = _scopes_pcs_offset; |
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781 _handler_table_offset = _dependencies_offset; |
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782 _nul_chk_table_offset = _handler_table_offset; |
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783 _nmethod_end_offset = _nul_chk_table_offset; |
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784 _compile_id = 0; // default |
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785 _comp_level = CompLevel_none; |
1748 | 786 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
787 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
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788 _osr_entry_point = NULL; |
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789 _exception_cache = NULL; |
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790 _pc_desc_cache.reset_to(NULL); |
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791 |
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792 code_buffer->copy_values_to(this); |
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793 debug_only(verify_scavenge_root_oops()); |
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794 CodeCache::commit(this); |
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795 } |
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796 |
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797 if (PrintNMethods || PrintDebugInfo || PrintRelocations || PrintDependencies) { |
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798 ttyLocker ttyl; // keep the following output all in one block |
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799 // This output goes directly to the tty, not the compiler log. |
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800 // To enable tools to match it up with the compilation activity, |
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801 // be sure to tag this tty output with the compile ID. |
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802 if (xtty != NULL) { |
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803 xtty->begin_head("print_dtrace_nmethod"); |
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804 xtty->method(_method); |
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805 xtty->stamp(); |
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806 xtty->end_head(" address='" INTPTR_FORMAT "'", (intptr_t) this); |
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807 } |
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808 // print the header part first |
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809 print(); |
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810 // then print the requested information |
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811 if (PrintNMethods) { |
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812 print_code(); |
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813 } |
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814 if (PrintRelocations) { |
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815 print_relocations(); |
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816 } |
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817 if (xtty != NULL) { |
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818 xtty->tail("print_dtrace_nmethod"); |
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819 } |
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820 } |
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821 } |
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822 #endif // def HAVE_DTRACE_H |
0 | 823 |
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824 void* nmethod::operator new(size_t size, int nmethod_size) throw () { |
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825 // Not critical, may return null if there is too little continuous memory |
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826 return CodeCache::allocate(nmethod_size); |
0 | 827 } |
828 | |
829 nmethod::nmethod( | |
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830 Method* method, |
0 | 831 int nmethod_size, |
832 int compile_id, | |
833 int entry_bci, | |
834 CodeOffsets* offsets, | |
835 int orig_pc_offset, | |
836 DebugInformationRecorder* debug_info, | |
837 Dependencies* dependencies, | |
838 CodeBuffer *code_buffer, | |
839 int frame_size, | |
840 OopMapSet* oop_maps, | |
841 ExceptionHandlerTable* handler_table, | |
842 ImplicitExceptionTable* nul_chk_table, | |
843 AbstractCompiler* compiler, | |
9707 | 844 int comp_level, |
845 GrowableArray<jlong>* leaf_graph_ids | |
846 #ifdef GRAAL | |
847 , Handle installed_code, | |
848 Handle triggered_deoptimizations | |
849 #endif | |
0 | 850 ) |
851 : CodeBlob("nmethod", code_buffer, sizeof(nmethod), | |
852 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, oop_maps), | |
2019 | 853 _native_receiver_sp_offset(in_ByteSize(-1)), |
854 _native_basic_lock_sp_offset(in_ByteSize(-1)) | |
0 | 855 { |
856 assert(debug_info->oop_recorder() == code_buffer->oop_recorder(), "shared OR"); | |
857 { | |
858 debug_only(No_Safepoint_Verifier nsv;) | |
859 assert_locked_or_safepoint(CodeCache_lock); | |
860 | |
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861 init_defaults(); |
0 | 862 _method = method; |
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863 _entry_bci = entry_bci; |
0 | 864 _compile_id = compile_id; |
865 _comp_level = comp_level; | |
866 _compiler = compiler; | |
867 _orig_pc_offset = orig_pc_offset; | |
1748 | 868 |
869 // Section offsets | |
1762
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870 _consts_offset = content_offset() + code_buffer->total_offset_of(code_buffer->consts()); |
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871 _stub_offset = content_offset() + code_buffer->total_offset_of(code_buffer->stubs()); |
0 | 872 |
9707 | 873 #ifdef GRAAL |
874 _graal_installed_code = installed_code(); | |
875 _triggered_deoptimizations = (typeArrayOop)triggered_deoptimizations(); | |
876 #endif | |
877 if (compiler->is_graal()) { | |
878 // Graal might not produce any stub sections | |
879 if (offsets->value(CodeOffsets::Exceptions) != -1) { | |
880 _exception_offset = code_offset() + offsets->value(CodeOffsets::Exceptions); | |
881 } else { | |
882 _exception_offset = -1; | |
883 } | |
884 if (offsets->value(CodeOffsets::Deopt) != -1) { | |
885 _deoptimize_offset = code_offset() + offsets->value(CodeOffsets::Deopt); | |
886 } else { | |
887 _deoptimize_offset = -1; | |
888 } | |
889 if (offsets->value(CodeOffsets::DeoptMH) != -1) { | |
890 _deoptimize_mh_offset = code_offset() + offsets->value(CodeOffsets::DeoptMH); | |
891 } else { | |
892 _deoptimize_mh_offset = -1; | |
893 } | |
1762
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894 } else { |
9707 | 895 // Exception handler and deopt handler are in the stub section |
896 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must be set"); | |
897 assert(offsets->value(CodeOffsets::Deopt ) != -1, "must be set"); | |
898 | |
899 _exception_offset = _stub_offset + offsets->value(CodeOffsets::Exceptions); | |
900 _deoptimize_offset = _stub_offset + offsets->value(CodeOffsets::Deopt); | |
901 if (offsets->value(CodeOffsets::DeoptMH) != -1) { | |
902 _deoptimize_mh_offset = _stub_offset + offsets->value(CodeOffsets::DeoptMH); | |
903 } else { | |
904 _deoptimize_mh_offset = -1; | |
905 } | |
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906 } |
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907 if (offsets->value(CodeOffsets::UnwindHandler) != -1) { |
1748 | 908 _unwind_handler_offset = code_offset() + offsets->value(CodeOffsets::UnwindHandler); |
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909 } else { |
1748 | 910 _unwind_handler_offset = -1; |
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911 } |
1748 | 912 |
9707 | 913 int leaf_graph_ids_size = leaf_graph_ids == NULL ? 0 : round_to(sizeof(jlong) * leaf_graph_ids->length(), oopSize); |
914 | |
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915 _oops_offset = data_offset(); |
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916 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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917 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
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918 |
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919 _scopes_pcs_offset = _scopes_data_offset + round_to(debug_info->data_size (), oopSize); |
0 | 920 _dependencies_offset = _scopes_pcs_offset + adjust_pcs_size(debug_info->pcs_size()); |
921 _handler_table_offset = _dependencies_offset + round_to(dependencies->size_in_bytes (), oopSize); | |
922 _nul_chk_table_offset = _handler_table_offset + round_to(handler_table->size_in_bytes(), oopSize); | |
9707 | 923 _leaf_graph_ids_offset = _nul_chk_table_offset + round_to(nul_chk_table->size_in_bytes(), oopSize); |
924 _nmethod_end_offset = _leaf_graph_ids_offset + leaf_graph_ids_size; | |
0 | 925 |
1748 | 926 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
927 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
928 _osr_entry_point = code_begin() + offsets->value(CodeOffsets::OSR_Entry); | |
0 | 929 _exception_cache = NULL; |
930 _pc_desc_cache.reset_to(scopes_pcs_begin()); | |
931 | |
932 // Copy contents of ScopeDescRecorder to nmethod | |
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933 code_buffer->copy_values_to(this); |
0 | 934 debug_info->copy_to(this); |
935 dependencies->copy_to(this); | |
989
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936 if (ScavengeRootsInCode && detect_scavenge_root_oops()) { |
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937 CodeCache::add_scavenge_root_nmethod(this); |
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938 } |
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939 debug_only(verify_scavenge_root_oops()); |
0 | 940 |
941 CodeCache::commit(this); | |
942 | |
943 // Copy contents of ExceptionHandlerTable to nmethod | |
944 handler_table->copy_to(this); | |
945 nul_chk_table->copy_to(this); | |
946 | |
9707 | 947 if (leaf_graph_ids != NULL && leaf_graph_ids_size > 0) { |
948 memcpy(leaf_graph_ids_begin(), leaf_graph_ids->adr_at(0), leaf_graph_ids_size); | |
949 } | |
950 | |
0 | 951 // we use the information of entry points to find out if a method is |
952 // static or non static | |
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953 assert(compiler->is_c2() || compiler->is_graal() || |
0 | 954 _method->is_static() == (entry_point() == _verified_entry_point), |
955 " entry points must be same for static methods and vice versa"); | |
956 } | |
957 | |
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958 bool printnmethods = PrintNMethods |
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959 || CompilerOracle::should_print(_method) |
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960 || CompilerOracle::has_option_string(_method, "PrintNMethods"); |
0 | 961 if (printnmethods || PrintDebugInfo || PrintRelocations || PrintDependencies || PrintExceptionHandlers) { |
962 print_nmethod(printnmethods); | |
963 } | |
964 } | |
965 | |
966 | |
967 // Print a short set of xml attributes to identify this nmethod. The | |
968 // output should be embedded in some other element. | |
969 void nmethod::log_identity(xmlStream* log) const { | |
970 log->print(" compile_id='%d'", compile_id()); | |
971 const char* nm_kind = compile_kind(); | |
972 if (nm_kind != NULL) log->print(" compile_kind='%s'", nm_kind); | |
973 if (compiler() != NULL) { | |
974 log->print(" compiler='%s'", compiler()->name()); | |
975 } | |
1783 | 976 if (TieredCompilation) { |
977 log->print(" level='%d'", comp_level()); | |
978 } | |
0 | 979 } |
980 | |
981 | |
982 #define LOG_OFFSET(log, name) \ | |
983 if ((intptr_t)name##_end() - (intptr_t)name##_begin()) \ | |
984 log->print(" " XSTR(name) "_offset='%d'" , \ | |
985 (intptr_t)name##_begin() - (intptr_t)this) | |
986 | |
987 | |
988 void nmethod::log_new_nmethod() const { | |
989 if (LogCompilation && xtty != NULL) { | |
990 ttyLocker ttyl; | |
991 HandleMark hm; | |
992 xtty->begin_elem("nmethod"); | |
993 log_identity(xtty); | |
1748 | 994 xtty->print(" entry='" INTPTR_FORMAT "' size='%d'", code_begin(), size()); |
0 | 995 xtty->print(" address='" INTPTR_FORMAT "'", (intptr_t) this); |
996 | |
997 LOG_OFFSET(xtty, relocation); | |
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998 LOG_OFFSET(xtty, consts); |
1748 | 999 LOG_OFFSET(xtty, insts); |
0 | 1000 LOG_OFFSET(xtty, stub); |
1001 LOG_OFFSET(xtty, scopes_data); | |
1002 LOG_OFFSET(xtty, scopes_pcs); | |
1003 LOG_OFFSET(xtty, dependencies); | |
1004 LOG_OFFSET(xtty, handler_table); | |
1005 LOG_OFFSET(xtty, nul_chk_table); | |
1006 LOG_OFFSET(xtty, oops); | |
1007 | |
1008 xtty->method(method()); | |
1009 xtty->stamp(); | |
1010 xtty->end_elem(); | |
1011 } | |
1012 } | |
1013 | |
1014 #undef LOG_OFFSET | |
1015 | |
1016 | |
1017 // Print out more verbose output usually for a newly created nmethod. | |
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1018 void nmethod::print_on(outputStream* st, const char* msg) const { |
0 | 1019 if (st != NULL) { |
1020 ttyLocker ttyl; | |
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1021 if (WizardMode) { |
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1022 CompileTask::print_compilation(st, this, msg, /*short_form:*/ true); |
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1023 st->print_cr(" (" INTPTR_FORMAT ")", this); |
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1024 } else { |
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1025 CompileTask::print_compilation(st, this, msg, /*short_form:*/ false); |
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1026 } |
0 | 1027 } |
1028 } | |
1029 | |
1030 | |
1031 void nmethod::print_nmethod(bool printmethod) { | |
1032 ttyLocker ttyl; // keep the following output all in one block | |
1033 if (xtty != NULL) { | |
1034 xtty->begin_head("print_nmethod"); | |
1035 xtty->stamp(); | |
1036 xtty->end_head(); | |
1037 } | |
1038 // print the header part first | |
1039 print(); | |
1040 // then print the requested information | |
1041 if (printmethod) { | |
1042 print_code(); | |
1043 print_pcs(); | |
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1044 if (oop_maps()) { |
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1045 oop_maps()->print(); |
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1046 } |
0 | 1047 } |
1048 if (PrintDebugInfo) { | |
1049 print_scopes(); | |
1050 } | |
1051 if (PrintRelocations) { | |
1052 print_relocations(); | |
1053 } | |
1054 if (PrintDependencies) { | |
1055 print_dependencies(); | |
1056 } | |
1057 if (PrintExceptionHandlers) { | |
1058 print_handler_table(); | |
1059 print_nul_chk_table(); | |
1060 } | |
1061 if (xtty != NULL) { | |
1062 xtty->tail("print_nmethod"); | |
1063 } | |
1064 } | |
1065 | |
1066 | |
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1067 // Promote one word from an assembly-time handle to a live embedded oop. |
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1068 inline void nmethod::initialize_immediate_oop(oop* dest, jobject handle) { |
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1069 if (handle == NULL || |
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1070 // As a special case, IC oops are initialized to 1 or -1. |
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1071 handle == (jobject) Universe::non_oop_word()) { |
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1072 (*dest) = (oop) handle; |
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1073 } else { |
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1074 (*dest) = JNIHandles::resolve_non_null(handle); |
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1075 } |
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1076 } |
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1077 |
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1078 |
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1079 // Have to have the same name because it's called by a template |
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1080 void nmethod::copy_values(GrowableArray<jobject>* array) { |
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1081 int length = array->length(); |
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1082 assert((address)(oops_begin() + length) <= (address)oops_end(), "oops big enough"); |
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1083 oop* dest = oops_begin(); |
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1084 for (int index = 0 ; index < length; index++) { |
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1085 initialize_immediate_oop(&dest[index], array->at(index)); |
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1086 } |
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1087 |
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1088 // Now we can fix up all the oops in the code. We need to do this |
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1089 // in the code because the assembler uses jobjects as placeholders. |
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1090 // The code and relocations have already been initialized by the |
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1091 // CodeBlob constructor, so it is valid even at this early point to |
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1092 // iterate over relocations and patch the code. |
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1093 fix_oop_relocations(NULL, NULL, /*initialize_immediates=*/ true); |
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1094 } |
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1095 |
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1096 void nmethod::copy_values(GrowableArray<Metadata*>* array) { |
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1097 int length = array->length(); |
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1098 assert((address)(metadata_begin() + length) <= (address)metadata_end(), "big enough"); |
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1099 Metadata** dest = metadata_begin(); |
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1100 for (int index = 0 ; index < length; index++) { |
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1101 dest[index] = array->at(index); |
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1102 } |
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1103 } |
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1104 |
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1105 bool nmethod::is_at_poll_return(address pc) { |
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1106 RelocIterator iter(this, pc, pc+1); |
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1107 while (iter.next()) { |
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1108 if (iter.type() == relocInfo::poll_return_type) |
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1109 return true; |
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1110 } |
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1111 return false; |
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1112 } |
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1113 |
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1114 |
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1115 bool nmethod::is_at_poll_or_poll_return(address pc) { |
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1116 RelocIterator iter(this, pc, pc+1); |
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1117 while (iter.next()) { |
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1118 relocInfo::relocType t = iter.type(); |
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1119 if (t == relocInfo::poll_return_type || t == relocInfo::poll_type) |
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1120 return true; |
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1121 } |
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1122 return false; |
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1123 } |
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1124 |
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1125 |
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1126 void nmethod::fix_oop_relocations(address begin, address end, bool initialize_immediates) { |
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1127 // re-patch all oop-bearing instructions, just in case some oops moved |
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1128 RelocIterator iter(this, begin, end); |
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1129 while (iter.next()) { |
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1130 if (iter.type() == relocInfo::oop_type) { |
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1131 oop_Relocation* reloc = iter.oop_reloc(); |
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1132 if (initialize_immediates && reloc->oop_is_immediate()) { |
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1133 oop* dest = reloc->oop_addr(); |
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1134 initialize_immediate_oop(dest, (jobject) *dest); |
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1135 } |
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1136 // Refresh the oop-related bits of this instruction. |
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1137 reloc->fix_oop_relocation(); |
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1138 } else if (iter.type() == relocInfo::metadata_type) { |
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1139 metadata_Relocation* reloc = iter.metadata_reloc(); |
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1140 reloc->fix_metadata_relocation(); |
1563
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1141 } |
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1142 } |
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1143 } |
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1144 |
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|
1145 |
2375
d673ef06fe96
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|
1146 void nmethod::verify_oop_relocations() { |
d673ef06fe96
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1147 // Ensure sure that the code matches the current oop values |
d673ef06fe96
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1148 RelocIterator iter(this, NULL, NULL); |
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1149 while (iter.next()) { |
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1150 if (iter.type() == relocInfo::oop_type) { |
d673ef06fe96
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1151 oop_Relocation* reloc = iter.oop_reloc(); |
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1152 if (!reloc->oop_is_immediate()) { |
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|
1153 reloc->verify_oop_relocation(); |
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|
1154 } |
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|
1155 } |
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|
1156 } |
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|
1157 } |
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|
1158 |
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|
1159 |
0 | 1160 ScopeDesc* nmethod::scope_desc_at(address pc) { |
1161 PcDesc* pd = pc_desc_at(pc); | |
1162 guarantee(pd != NULL, "scope must be present"); | |
1163 return new ScopeDesc(this, pd->scope_decode_offset(), | |
9707 | 1164 pd->obj_decode_offset(), pd->should_reexecute(), pd->rethrow_exception(), |
1253
f70b0d9ab095
6910618: C2: Error: assert(d->is_oop(),"JVM_ArrayCopy: dst not an oop")
kvn
parents:
1250
diff
changeset
|
1165 pd->return_oop()); |
0 | 1166 } |
1167 | |
1168 | |
1169 void nmethod::clear_inline_caches() { | |
1170 assert(SafepointSynchronize::is_at_safepoint(), "cleaning of IC's only allowed at safepoint"); | |
1171 if (is_zombie()) { | |
1172 return; | |
1173 } | |
1174 | |
1175 RelocIterator iter(this); | |
1176 while (iter.next()) { | |
1177 iter.reloc()->clear_inline_cache(); | |
1178 } | |
1179 } | |
1180 | |
1181 | |
1182 void nmethod::cleanup_inline_caches() { | |
1183 | |
1538
bfe29ec02863
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parents:
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|
1184 assert_locked_or_safepoint(CompiledIC_lock); |
0 | 1185 |
1186 // If the method is not entrant or zombie then a JMP is plastered over the | |
1187 // first few bytes. If an oop in the old code was there, that oop | |
1188 // should not get GC'd. Skip the first few bytes of oops on | |
1189 // not-entrant methods. | |
1190 address low_boundary = verified_entry_point(); | |
1191 if (!is_in_use()) { | |
1192 low_boundary += NativeJump::instruction_size; | |
1193 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
1194 // This means that the low_boundary is going to be a little too high. | |
1195 // This shouldn't matter, since oops of non-entrant methods are never used. | |
1196 // In fact, why are we bothering to look at oops in a non-entrant method?? | |
1197 } | |
1198 | |
1199 // Find all calls in an nmethod, and clear the ones that points to zombie methods | |
1200 ResourceMark rm; | |
1201 RelocIterator iter(this, low_boundary); | |
1202 while(iter.next()) { | |
1203 switch(iter.type()) { | |
1204 case relocInfo::virtual_call_type: | |
1205 case relocInfo::opt_virtual_call_type: { | |
1206 CompiledIC *ic = CompiledIC_at(iter.reloc()); | |
1207 // Ok, to lookup references to zombies here | |
1208 CodeBlob *cb = CodeCache::find_blob_unsafe(ic->ic_destination()); | |
1209 if( cb != NULL && cb->is_nmethod() ) { | |
1210 nmethod* nm = (nmethod*)cb; | |
1211 // Clean inline caches pointing to both zombie and not_entrant methods | |
1202 | 1212 if (!nm->is_in_use() || (nm->method()->code() != nm)) ic->set_to_clean(); |
0 | 1213 } |
1214 break; | |
1215 } | |
1216 case relocInfo::static_call_type: { | |
1217 CompiledStaticCall *csc = compiledStaticCall_at(iter.reloc()); | |
1218 CodeBlob *cb = CodeCache::find_blob_unsafe(csc->destination()); | |
1219 if( cb != NULL && cb->is_nmethod() ) { | |
1220 nmethod* nm = (nmethod*)cb; | |
1221 // Clean inline caches pointing to both zombie and not_entrant methods | |
1202 | 1222 if (!nm->is_in_use() || (nm->method()->code() != nm)) csc->set_to_clean(); |
0 | 1223 } |
1224 break; | |
1225 } | |
1226 } | |
1227 } | |
1228 } | |
1229 | |
989
148e5441d916
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jrose
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changeset
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1230 // This is a private interface with the sweeper. |
0 | 1231 void nmethod::mark_as_seen_on_stack() { |
1232 assert(is_not_entrant(), "must be a non-entrant method"); | |
1644
2a47bd84841f
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1233 // Set the traversal mark to ensure that the sweeper does 2 |
2a47bd84841f
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1234 // cleaning passes before moving to zombie. |
0 | 1235 set_stack_traversal_mark(NMethodSweeper::traversal_count()); |
1236 } | |
1237 | |
2342
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
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diff
changeset
|
1238 // Tell if a non-entrant method can be converted to a zombie (i.e., |
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
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changeset
|
1239 // there are no activations on the stack, not in use by the VM, |
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
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diff
changeset
|
1240 // and not in use by the ServiceThread) |
0 | 1241 bool nmethod::can_not_entrant_be_converted() { |
1242 assert(is_not_entrant(), "must be a non-entrant method"); | |
1243 | |
1244 // Since the nmethod sweeper only does partial sweep the sweeper's traversal | |
1245 // count can be greater than the stack traversal count before it hits the | |
1246 // nmethod for the second time. | |
2342
46a56fac55c7
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dcubed
parents:
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|
1247 return stack_traversal_mark()+1 < NMethodSweeper::traversal_count() && |
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
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|
1248 !is_locked_by_vm(); |
0 | 1249 } |
1250 | |
1251 void nmethod::inc_decompile_count() { | |
9707 | 1252 if (!is_compiled_by_c2() && !is_compiled_by_graal()) return; |
0 | 1253 // Could be gated by ProfileTraps, but do not bother... |
6725
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coleenp
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1254 Method* m = method(); |
0 | 1255 if (m == NULL) return; |
6725
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1256 MethodData* mdo = m->method_data(); |
0 | 1257 if (mdo == NULL) return; |
6725
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1258 // There is a benign race here. See comments in methodData.hpp. |
0 | 1259 mdo->inc_decompile_count(); |
1260 } | |
1261 | |
1262 void nmethod::make_unloaded(BoolObjectClosure* is_alive, oop cause) { | |
1263 | |
1264 post_compiled_method_unload(); | |
1265 | |
1266 // Since this nmethod is being unloaded, make sure that dependencies | |
1267 // recorded in instanceKlasses get flushed and pass non-NULL closure to | |
1268 // indicate that this work is being done during a GC. | |
1269 assert(Universe::heap()->is_gc_active(), "should only be called during gc"); | |
1270 assert(is_alive != NULL, "Should be non-NULL"); | |
1271 // A non-NULL is_alive closure indicates that this is being called during GC. | |
1272 flush_dependencies(is_alive); | |
1273 | |
1274 // Break cycle between nmethod & method | |
1275 if (TraceClassUnloading && WizardMode) { | |
1276 tty->print_cr("[Class unloading: Making nmethod " INTPTR_FORMAT | |
6725
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1277 " unloadable], Method*(" INTPTR_FORMAT |
0 | 1278 "), cause(" INTPTR_FORMAT ")", |
1279 this, (address)_method, (address)cause); | |
989
148e5441d916
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jrose
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1280 if (!Universe::heap()->is_gc_active()) |
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|
1281 cause->klass()->print(); |
0 | 1282 } |
941 | 1283 // Unlink the osr method, so we do not look this up again |
1284 if (is_osr_method()) { | |
1285 invalidate_osr_method(); | |
1286 } | |
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1287 // If _method is already NULL the Method* is about to be unloaded, |
0 | 1288 // so we don't have to break the cycle. Note that it is possible to |
6725
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1289 // have the Method* live here, in case we unload the nmethod because |
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|
1290 // it is pointing to some oop (other than the Method*) being unloaded. |
0 | 1291 if (_method != NULL) { |
6725
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|
1292 // OSR methods point to the Method*, but the Method* does not |
0 | 1293 // point back! |
1294 if (_method->code() == this) { | |
1295 _method->clear_code(); // Break a cycle | |
1296 } | |
1297 _method = NULL; // Clear the method of this dead nmethod | |
1298 } | |
9707 | 1299 |
1300 #ifdef GRAAL | |
1301 // The method can only be unloaded after the pointer to the installed code | |
1302 // Java wrapper is no longer alive. Here we need to clear out this weak | |
1303 // reference to the dead object. | |
1304 if (_graal_installed_code != NULL) { | |
10560
0b1b5356b566
Fixed issues around execute compiled code stub. Made TraceDeoptimization a product flag.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
10475
diff
changeset
|
1305 HotSpotInstalledCode::set_codeBlob(_graal_installed_code, 0); |
9707 | 1306 _graal_installed_code = NULL; |
1307 } | |
1308 #endif | |
1309 | |
0 | 1310 // Make the class unloaded - i.e., change state and notify sweeper |
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|
1311 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint"); |
0 | 1312 if (is_in_use()) { |
1313 // Transitioning directly from live to unloaded -- so | |
1314 // we need to force a cache clean-up; remember this | |
1315 // for later on. | |
1316 CodeCache::set_needs_cache_clean(true); | |
1317 } | |
1644
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diff
changeset
|
1318 _state = unloaded; |
0 | 1319 |
1109
032260830071
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parents:
994
diff
changeset
|
1320 // Log the unloading. |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
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changeset
|
1321 log_state_change(); |
032260830071
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diff
changeset
|
1322 |
6725
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coleenp
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changeset
|
1323 // The Method* is gone at this point |
0 | 1324 assert(_method == NULL, "Tautology"); |
1325 | |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
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931
diff
changeset
|
1326 set_osr_link(NULL); |
148e5441d916
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jrose
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changeset
|
1327 //set_scavenge_root_link(NULL); // done by prune_scavenge_root_nmethods |
0 | 1328 NMethodSweeper::notify(this); |
1329 } | |
1330 | |
1331 void nmethod::invalidate_osr_method() { | |
1332 assert(_entry_bci != InvocationEntryBci, "wrong kind of nmethod"); | |
1333 // Remove from list of active nmethods | |
1334 if (method() != NULL) | |
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
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6806
diff
changeset
|
1335 method()->method_holder()->remove_osr_nmethod(this); |
0 | 1336 // Set entry as invalid |
1337 _entry_bci = InvalidOSREntryBci; | |
1338 } | |
1339 | |
1109
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
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diff
changeset
|
1340 void nmethod::log_state_change() const { |
0 | 1341 if (LogCompilation) { |
1342 if (xtty != NULL) { | |
1343 ttyLocker ttyl; // keep the following output all in one block | |
1644
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6965184: possible races in make_not_entrant_or_zombie
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1344 if (_state == unloaded) { |
1109
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5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1345 xtty->begin_elem("make_unloaded thread='" UINTX_FORMAT "'", |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1346 os::current_thread_id()); |
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1347 } else { |
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1348 xtty->begin_elem("make_not_entrant thread='" UINTX_FORMAT "'%s", |
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1349 os::current_thread_id(), |
1644
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1350 (_state == zombie ? " zombie='1'" : "")); |
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1351 } |
0 | 1352 log_identity(xtty); |
1353 xtty->stamp(); | |
1354 xtty->end_elem(); | |
1355 } | |
1356 } | |
1644
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1357 if (PrintCompilation && _state != unloaded) { |
2405
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1358 print_on(tty, _state == zombie ? "made zombie" : "made not entrant"); |
0 | 1359 } |
1360 } | |
1361 | |
1362 // Common functionality for both make_not_entrant and make_zombie | |
1141 | 1363 bool nmethod::make_not_entrant_or_zombie(unsigned int state) { |
0 | 1364 assert(state == zombie || state == not_entrant, "must be zombie or not_entrant"); |
2342
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1365 assert(!is_zombie(), "should not already be a zombie"); |
0 | 1366 |
1644
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1367 // Make sure neither the nmethod nor the method is flushed in case of a safepoint in code below. |
0 | 1368 nmethodLocker nml(this); |
1644
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1369 methodHandle the_method(method()); |
1726 | 1370 No_Safepoint_Verifier nsv; |
0 | 1371 |
1372 { | |
1109
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1373 // invalidate osr nmethod before acquiring the patching lock since |
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1374 // they both acquire leaf locks and we don't want a deadlock. |
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1375 // This logic is equivalent to the logic below for patching the |
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1376 // verified entry point of regular methods. |
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1377 if (is_osr_method()) { |
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1378 // this effectively makes the osr nmethod not entrant |
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1379 invalidate_osr_method(); |
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1380 } |
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1381 |
0 | 1382 // Enter critical section. Does not block for safepoint. |
1383 MutexLockerEx pl(Patching_lock, Mutex::_no_safepoint_check_flag); | |
1109
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1384 |
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1385 if (_state == state) { |
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1386 // another thread already performed this transition so nothing |
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1387 // to do, but return false to indicate this. |
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1388 return false; |
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1389 } |
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1390 |
0 | 1391 // The caller can be calling the method statically or through an inline |
1392 // cache call. | |
1109
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1393 if (!is_osr_method() && !is_not_entrant()) { |
9707 | 1394 address stub = SharedRuntime::get_handle_wrong_method_stub(); |
1395 #ifdef GRAAL | |
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1396 if (_graal_installed_code != NULL) { |
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1397 // Break the link between nmethod and HotSpotInstalledCode such that the nmethod can subsequently be flushed safely. |
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1398 HotSpotInstalledCode::set_codeBlob(_graal_installed_code, 0); |
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1399 _graal_installed_code = NULL; |
9707 | 1400 } |
1401 #endif | |
1402 NativeJump::patch_verified_entry(entry_point(), verified_entry_point(), stub); | |
0 | 1403 } |
1404 | |
1644
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1405 if (is_in_use()) { |
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1406 // It's a true state change, so mark the method as decompiled. |
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1407 // Do it only for transition from alive. |
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1408 inc_decompile_count(); |
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1409 } |
1206
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1410 |
0 | 1411 // Change state |
1644
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1412 _state = state; |
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1413 |
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1414 // Log the transition once |
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1415 log_state_change(); |
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1416 |
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1417 // Remove nmethod from method. |
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1418 // We need to check if both the _code and _from_compiled_code_entry_point |
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1419 // refer to this nmethod because there is a race in setting these two fields |
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1420 // in Method* as seen in bugid 4947125. |
1644
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1421 // If the vep() points to the zombie nmethod, the memory for the nmethod |
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1422 // could be flushed and the compiler and vtable stubs could still call |
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1423 // through it. |
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1424 if (method() != NULL && (method()->code() == this || |
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1425 method()->from_compiled_entry() == verified_entry_point())) { |
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1426 HandleMark hm; |
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1427 method()->clear_code(); |
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1428 } |
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1429 |
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1430 if (state == not_entrant) { |
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1431 mark_as_seen_on_stack(); |
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1432 } |
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1433 |
0 | 1434 } // leave critical region under Patching_lock |
1435 | |
1538
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1436 // When the nmethod becomes zombie it is no longer alive so the |
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1437 // dependencies must be flushed. nmethods in the not_entrant |
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1438 // state will be flushed later when the transition to zombie |
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1439 // happens or they get unloaded. |
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1440 if (state == zombie) { |
1726 | 1441 { |
1442 // Flushing dependecies must be done before any possible | |
1443 // safepoint can sneak in, otherwise the oops used by the | |
1444 // dependency logic could have become stale. | |
1445 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
1446 flush_dependencies(NULL); | |
1447 } | |
1644
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1448 |
2342
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1449 // zombie only - if a JVMTI agent has enabled the CompiledMethodUnload |
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1450 // event and it hasn't already been reported for this nmethod then |
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1451 // report it now. The event may have been reported earilier if the GC |
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1452 // marked it for unloading). JvmtiDeferredEventQueue support means |
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1453 // we no longer go to a safepoint here. |
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|
1454 post_compiled_method_unload(); |
1726 | 1455 |
1456 #ifdef ASSERT | |
1457 // It's no longer safe to access the oops section since zombie | |
1458 // nmethods aren't scanned for GC. | |
1459 _oops_are_stale = true; | |
1460 #endif | |
1538
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1461 } else { |
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1462 assert(state == not_entrant, "other cases may need to be handled differently"); |
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1463 } |
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1464 |
0 | 1465 if (TraceCreateZombies) { |
9707 | 1466 ResourceMark m; |
1467 tty->print_cr("nmethod <" INTPTR_FORMAT "> %s code made %s", this, this->method()->name_and_sig_as_C_string(), (state == not_entrant) ? "not entrant" : "zombie"); | |
0 | 1468 } |
1469 | |
1470 // Make sweeper aware that there is a zombie method that needs to be removed | |
1471 NMethodSweeper::notify(this); | |
1472 | |
1109
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1473 return true; |
0 | 1474 } |
1475 | |
1476 void nmethod::flush() { | |
1477 // Note that there are no valid oops in the nmethod anymore. | |
1478 assert(is_zombie() || (is_osr_method() && is_unloaded()), "must be a zombie method"); | |
1479 assert(is_marked_for_reclamation() || (is_osr_method() && is_unloaded()), "must be marked for reclamation"); | |
1480 | |
1481 assert (!is_locked_by_vm(), "locked methods shouldn't be flushed"); | |
1538
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1482 assert_locked_or_safepoint(CodeCache_lock); |
0 | 1483 |
1484 // completely deallocate this method | |
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1485 Events::log(JavaThread::current(), "flushing nmethod " INTPTR_FORMAT, this); |
0 | 1486 if (PrintMethodFlushing) { |
1202 | 1487 tty->print_cr("*flushing nmethod %3d/" INTPTR_FORMAT ". Live blobs:" UINT32_FORMAT "/Free CodeCache:" SIZE_FORMAT "Kb", |
1488 _compile_id, this, CodeCache::nof_blobs(), CodeCache::unallocated_capacity()/1024); | |
0 | 1489 } |
1490 | |
1491 // We need to deallocate any ExceptionCache data. | |
1492 // Note that we do not need to grab the nmethod lock for this, it | |
1493 // better be thread safe if we're disposing of it! | |
1494 ExceptionCache* ec = exception_cache(); | |
1495 set_exception_cache(NULL); | |
1496 while(ec != NULL) { | |
1497 ExceptionCache* next = ec->next(); | |
1498 delete ec; | |
1499 ec = next; | |
1500 } | |
1501 | |
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1502 if (on_scavenge_root_list()) { |
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1503 CodeCache::drop_scavenge_root_nmethod(this); |
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1504 } |
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1505 |
1202 | 1506 if (is_speculatively_disconnected()) { |
1507 CodeCache::remove_saved_code(this); | |
1508 } | |
1509 | |
1692 | 1510 #ifdef SHARK |
1845
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1511 ((SharkCompiler *) compiler())->free_compiled_method(insts_begin()); |
1692 | 1512 #endif // SHARK |
1513 | |
0 | 1514 ((CodeBlob*)(this))->flush(); |
1515 | |
1516 CodeCache::free(this); | |
1517 } | |
1518 | |
1519 | |
1520 // | |
1521 // Notify all classes this nmethod is dependent on that it is no | |
1522 // longer dependent. This should only be called in two situations. | |
1523 // First, when a nmethod transitions to a zombie all dependents need | |
1524 // to be clear. Since zombification happens at a safepoint there's no | |
1525 // synchronization issues. The second place is a little more tricky. | |
1526 // During phase 1 of mark sweep class unloading may happen and as a | |
1527 // result some nmethods may get unloaded. In this case the flushing | |
1528 // of dependencies must happen during phase 1 since after GC any | |
1529 // dependencies in the unloaded nmethod won't be updated, so | |
1530 // traversing the dependency information in unsafe. In that case this | |
1531 // function is called with a non-NULL argument and this function only | |
1532 // notifies instanceKlasses that are reachable | |
1533 | |
1534 void nmethod::flush_dependencies(BoolObjectClosure* is_alive) { | |
1538
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1535 assert_locked_or_safepoint(CodeCache_lock); |
0 | 1536 assert(Universe::heap()->is_gc_active() == (is_alive != NULL), |
1537 "is_alive is non-NULL if and only if we are called during GC"); | |
1538 if (!has_flushed_dependencies()) { | |
1539 set_has_flushed_dependencies(); | |
1540 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
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1541 Klass* klass = deps.context_type(); |
0 | 1542 if (klass == NULL) continue; // ignore things like evol_method |
1543 | |
1544 // During GC the is_alive closure is non-NULL, and is used to | |
1545 // determine liveness of dependees that need to be updated. | |
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1546 if (is_alive == NULL || klass->is_loader_alive(is_alive)) { |
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1547 InstanceKlass::cast(klass)->remove_dependent_nmethod(this); |
0 | 1548 } |
1549 } | |
1550 } | |
1551 } | |
1552 | |
1553 | |
1554 // If this oop is not live, the nmethod can be unloaded. | |
6787
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brutisso
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|
1555 bool nmethod::can_unload(BoolObjectClosure* is_alive, oop* root, bool unloading_occurred) { |
0 | 1556 assert(root != NULL, "just checking"); |
1557 oop obj = *root; | |
1558 if (obj == NULL || is_alive->do_object_b(obj)) { | |
1559 return false; | |
1560 } | |
6725
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|
1561 |
989
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1562 // If ScavengeRootsInCode is true, an nmethod might be unloaded |
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1563 // simply because one of its constant oops has gone dead. |
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|
1564 // No actual classes need to be unloaded in order for this to occur. |
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|
1565 assert(unloading_occurred || ScavengeRootsInCode, "Inconsistency in unloading"); |
0 | 1566 make_unloaded(is_alive, obj); |
1567 return true; | |
1568 } | |
1569 | |
1570 // ------------------------------------------------------------------ | |
1571 // post_compiled_method_load_event | |
1572 // new method for install_code() path | |
1573 // Transfer information from compilation to jvmti | |
1574 void nmethod::post_compiled_method_load_event() { | |
1575 | |
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1576 Method* moop = method(); |
4006 | 1577 #ifndef USDT2 |
0 | 1578 HS_DTRACE_PROBE8(hotspot, compiled__method__load, |
1579 moop->klass_name()->bytes(), | |
1580 moop->klass_name()->utf8_length(), | |
1581 moop->name()->bytes(), | |
1582 moop->name()->utf8_length(), | |
1583 moop->signature()->bytes(), | |
1584 moop->signature()->utf8_length(), | |
1748 | 1585 insts_begin(), insts_size()); |
4006 | 1586 #else /* USDT2 */ |
1587 HOTSPOT_COMPILED_METHOD_LOAD( | |
1588 (char *) moop->klass_name()->bytes(), | |
1589 moop->klass_name()->utf8_length(), | |
1590 (char *) moop->name()->bytes(), | |
1591 moop->name()->utf8_length(), | |
1592 (char *) moop->signature()->bytes(), | |
1593 moop->signature()->utf8_length(), | |
1594 insts_begin(), insts_size()); | |
1595 #endif /* USDT2 */ | |
0 | 1596 |
1616
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1597 if (JvmtiExport::should_post_compiled_method_load() || |
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1598 JvmtiExport::should_post_compiled_method_unload()) { |
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1599 get_and_cache_jmethod_id(); |
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1600 } |
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1601 |
0 | 1602 if (JvmtiExport::should_post_compiled_method_load()) { |
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1603 // Let the Service thread (which is a real Java thread) post the event |
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1604 MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag); |
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1605 JvmtiDeferredEventQueue::enqueue( |
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1606 JvmtiDeferredEvent::compiled_method_load_event(this)); |
0 | 1607 } |
1608 } | |
1609 | |
1616
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1610 jmethodID nmethod::get_and_cache_jmethod_id() { |
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1611 if (_jmethod_id == NULL) { |
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1612 // Cache the jmethod_id since it can no longer be looked up once the |
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1613 // method itself has been marked for unloading. |
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1614 _jmethod_id = method()->jmethod_id(); |
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1615 } |
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1616 return _jmethod_id; |
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1617 } |
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1618 |
0 | 1619 void nmethod::post_compiled_method_unload() { |
1577
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1620 if (unload_reported()) { |
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1621 // During unloading we transition to unloaded and then to zombie |
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1622 // and the unloading is reported during the first transition. |
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1623 return; |
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1624 } |
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1625 |
0 | 1626 assert(_method != NULL && !is_unloaded(), "just checking"); |
1627 DTRACE_METHOD_UNLOAD_PROBE(method()); | |
1628 | |
1629 // If a JVMTI agent has enabled the CompiledMethodUnload event then | |
1616
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1630 // post the event. Sometime later this nmethod will be made a zombie |
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1631 // by the sweeper but the Method* will not be valid at that point. |
1616
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1632 // If the _jmethod_id is null then no load event was ever requested |
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1633 // so don't bother posting the unload. The main reason for this is |
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1634 // that the jmethodID is a weak reference to the Method* so if |
1616
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1635 // it's being unloaded there's no way to look it up since the weak |
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1636 // ref will have been cleared. |
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1637 if (_jmethod_id != NULL && JvmtiExport::should_post_compiled_method_unload()) { |
0 | 1638 assert(!unload_reported(), "already unloaded"); |
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1639 JvmtiDeferredEvent event = |
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1640 JvmtiDeferredEvent::compiled_method_unload_event(this, |
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1641 _jmethod_id, insts_begin()); |
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1642 if (SafepointSynchronize::is_at_safepoint()) { |
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1643 // Don't want to take the queueing lock. Add it as pending and |
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1644 // it will get enqueued later. |
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1645 JvmtiDeferredEventQueue::add_pending_event(event); |
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1646 } else { |
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1647 MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag); |
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1648 JvmtiDeferredEventQueue::enqueue(event); |
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1649 } |
0 | 1650 } |
1651 | |
1652 // The JVMTI CompiledMethodUnload event can be enabled or disabled at | |
1653 // any time. As the nmethod is being unloaded now we mark it has | |
1654 // having the unload event reported - this will ensure that we don't | |
1655 // attempt to report the event in the unlikely scenario where the | |
1656 // event is enabled at the time the nmethod is made a zombie. | |
1657 set_unload_reported(); | |
1658 } | |
1659 | |
1660 // This is called at the end of the strong tracing/marking phase of a | |
1661 // GC to unload an nmethod if it contains otherwise unreachable | |
1662 // oops. | |
1663 | |
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1664 void nmethod::do_unloading(BoolObjectClosure* is_alive, bool unloading_occurred) { |
0 | 1665 // Make sure the oop's ready to receive visitors |
1666 assert(!is_zombie() && !is_unloaded(), | |
1667 "should not call follow on zombie or unloaded nmethod"); | |
1668 | |
1669 // If the method is not entrant then a JMP is plastered over the | |
1670 // first few bytes. If an oop in the old code was there, that oop | |
1671 // should not get GC'd. Skip the first few bytes of oops on | |
1672 // not-entrant methods. | |
1673 address low_boundary = verified_entry_point(); | |
1674 if (is_not_entrant()) { | |
1675 low_boundary += NativeJump::instruction_size; | |
1676 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
1677 // (See comment above.) | |
1678 } | |
1679 | |
1680 // The RedefineClasses() API can cause the class unloading invariant | |
1681 // to no longer be true. See jvmtiExport.hpp for details. | |
1682 // Also, leave a debugging breadcrumb in local flag. | |
1683 bool a_class_was_redefined = JvmtiExport::has_redefined_a_class(); | |
1684 if (a_class_was_redefined) { | |
1685 // This set of the unloading_occurred flag is done before the | |
1686 // call to post_compiled_method_unload() so that the unloading | |
1687 // of this nmethod is reported. | |
1688 unloading_occurred = true; | |
1689 } | |
1690 | |
9707 | 1691 #ifdef GRAAL |
1692 // Follow Graal method | |
1693 if (_graal_installed_code != NULL) { | |
1694 if (HotSpotNmethod::isDefault(_graal_installed_code)) { | |
1695 if (!is_alive->do_object_b(_graal_installed_code)) { | |
1696 _graal_installed_code = NULL; | |
1697 } | |
1698 } else { | |
1699 if (can_unload(is_alive, (oop*)&_graal_installed_code, unloading_occurred)) { | |
1700 return; | |
1701 } | |
1702 } | |
1703 } | |
1704 #endif | |
1705 | |
0 | 1706 // Exception cache |
1707 ExceptionCache* ec = exception_cache(); | |
1708 while (ec != NULL) { | |
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1709 Klass* ex_klass = ec->exception_type(); |
0 | 1710 ExceptionCache* next_ec = ec->next(); |
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1711 if (ex_klass != NULL && !ex_klass->is_loader_alive(is_alive)) { |
0 | 1712 remove_from_exception_cache(ec); |
1713 } | |
1714 ec = next_ec; | |
1715 } | |
1716 | |
1717 // If class unloading occurred we first iterate over all inline caches and | |
1718 // clear ICs where the cached oop is referring to an unloaded klass or method. | |
1719 // The remaining live cached oops will be traversed in the relocInfo::oop_type | |
1720 // iteration below. | |
1721 if (unloading_occurred) { | |
1722 RelocIterator iter(this, low_boundary); | |
1723 while(iter.next()) { | |
1724 if (iter.type() == relocInfo::virtual_call_type) { | |
1725 CompiledIC *ic = CompiledIC_at(iter.reloc()); | |
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1726 if (ic->is_icholder_call()) { |
0 | 1727 // The only exception is compiledICHolder oops which may |
1728 // yet be marked below. (We check this further below). | |
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1729 CompiledICHolder* cichk_oop = ic->cached_icholder(); |
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1730 if (cichk_oop->holder_method()->method_holder()->is_loader_alive(is_alive) && |
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1731 cichk_oop->holder_klass()->is_loader_alive(is_alive)) { |
0 | 1732 continue; |
1733 } | |
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1734 } else { |
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1735 Metadata* ic_oop = ic->cached_metadata(); |
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1736 if (ic_oop != NULL) { |
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1737 if (ic_oop->is_klass()) { |
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1738 if (((Klass*)ic_oop)->is_loader_alive(is_alive)) { |
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1739 continue; |
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1740 } |
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1741 } else if (ic_oop->is_method()) { |
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1742 if (((Method*)ic_oop)->method_holder()->is_loader_alive(is_alive)) { |
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1743 continue; |
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1744 } |
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1745 } else { |
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1746 ShouldNotReachHere(); |
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1747 } |
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1748 } |
0 | 1749 } |
1750 ic->set_to_clean(); | |
1751 } | |
1752 } | |
1753 } | |
1754 | |
1755 // Compiled code | |
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1756 { |
0 | 1757 RelocIterator iter(this, low_boundary); |
1758 while (iter.next()) { | |
1759 if (iter.type() == relocInfo::oop_type) { | |
1760 oop_Relocation* r = iter.oop_reloc(); | |
1761 // In this loop, we must only traverse those oops directly embedded in | |
1762 // the code. Other oops (oop_index>0) are seen as part of scopes_oops. | |
1763 assert(1 == (r->oop_is_immediate()) + | |
1764 (r->oop_addr() >= oops_begin() && r->oop_addr() < oops_end()), | |
1765 "oop must be found in exactly one place"); | |
1766 if (r->oop_is_immediate() && r->oop_value() != NULL) { | |
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1767 if (can_unload(is_alive, r->oop_addr(), unloading_occurred)) { |
0 | 1768 return; |
1769 } | |
1770 } | |
1771 } | |
1772 } | |
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1773 } |
0 | 1774 |
1775 | |
1776 // Scopes | |
1777 for (oop* p = oops_begin(); p < oops_end(); p++) { | |
1778 if (*p == Universe::non_oop_word()) continue; // skip non-oops | |
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1779 if (can_unload(is_alive, p, unloading_occurred)) { |
0 | 1780 return; |
1781 } | |
1782 } | |
1783 | |
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1784 // Ensure that all metadata is still alive |
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1785 verify_metadata_loaders(low_boundary, is_alive); |
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1786 } |
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1787 |
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1788 #ifdef ASSERT |
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1789 |
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1790 class CheckClass : AllStatic { |
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1791 static BoolObjectClosure* _is_alive; |
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1792 |
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1793 // Check class_loader is alive for this bit of metadata. |
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1794 static void check_class(Metadata* md) { |
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1795 Klass* klass = NULL; |
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1796 if (md->is_klass()) { |
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1797 klass = ((Klass*)md); |
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1798 } else if (md->is_method()) { |
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1799 klass = ((Method*)md)->method_holder(); |
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1800 } else if (md->is_methodData()) { |
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1801 klass = ((MethodData*)md)->method()->method_holder(); |
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1802 } else { |
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1803 md->print(); |
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1804 ShouldNotReachHere(); |
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1805 } |
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1806 assert(klass->is_loader_alive(_is_alive), "must be alive"); |
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1807 } |
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1808 public: |
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1809 static void do_check_class(BoolObjectClosure* is_alive, nmethod* nm) { |
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1810 assert(SafepointSynchronize::is_at_safepoint(), "this is only ok at safepoint"); |
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1811 _is_alive = is_alive; |
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1812 nm->metadata_do(check_class); |
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1813 } |
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1814 }; |
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1815 |
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1816 // This is called during a safepoint so can use static data |
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1817 BoolObjectClosure* CheckClass::_is_alive = NULL; |
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1818 #endif // ASSERT |
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1819 |
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1820 |
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1821 // Processing of oop references should have been sufficient to keep |
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1822 // all strong references alive. Any weak references should have been |
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1823 // cleared as well. Visit all the metadata and ensure that it's |
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1824 // really alive. |
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1825 void nmethod::verify_metadata_loaders(address low_boundary, BoolObjectClosure* is_alive) { |
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1826 #ifdef ASSERT |
0 | 1827 RelocIterator iter(this, low_boundary); |
1828 while (iter.next()) { | |
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1829 // static_stub_Relocations may have dangling references to |
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1830 // Method*s so trim them out here. Otherwise it looks like |
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1831 // compiled code is maintaining a link to dead metadata. |
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1832 address static_call_addr = NULL; |
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1833 if (iter.type() == relocInfo::opt_virtual_call_type) { |
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1834 CompiledIC* cic = CompiledIC_at(iter.reloc()); |
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1835 if (!cic->is_call_to_interpreted()) { |
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1836 static_call_addr = iter.addr(); |
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1837 } |
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1838 } else if (iter.type() == relocInfo::static_call_type) { |
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1839 CompiledStaticCall* csc = compiledStaticCall_at(iter.reloc()); |
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1840 if (!csc->is_call_to_interpreted()) { |
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1841 static_call_addr = iter.addr(); |
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1842 } |
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1843 } |
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1844 if (static_call_addr != NULL) { |
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1845 RelocIterator sciter(this, low_boundary); |
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1846 while (sciter.next()) { |
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1847 if (sciter.type() == relocInfo::static_stub_type && |
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1848 sciter.static_stub_reloc()->static_call() == static_call_addr) { |
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1849 sciter.static_stub_reloc()->clear_inline_cache(); |
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1850 } |
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1851 } |
0 | 1852 } |
1853 } | |
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1854 // Check that the metadata embedded in the nmethod is alive |
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1855 CheckClass::do_check_class(is_alive, this); |
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1856 #endif |
0 | 1857 } |
1858 | |
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1859 // Iterate over metadata calling this function. Used by RedefineClasses |
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1860 void nmethod::metadata_do(void f(Metadata*)) { |
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1861 address low_boundary = verified_entry_point(); |
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1862 if (is_not_entrant()) { |
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1863 low_boundary += NativeJump::instruction_size; |
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1864 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. |
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1865 // (See comment above.) |
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1866 } |
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1867 { |
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1868 // Visit all immediate references that are embedded in the instruction stream. |
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1869 RelocIterator iter(this, low_boundary); |
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1870 while (iter.next()) { |
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1871 if (iter.type() == relocInfo::metadata_type ) { |
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1872 metadata_Relocation* r = iter.metadata_reloc(); |
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1873 // In this lmetadata, we must only follow those metadatas directly embedded in |
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1874 // the code. Other metadatas (oop_index>0) are seen as part of |
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1875 // the metadata section below. |
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1876 assert(1 == (r->metadata_is_immediate()) + |
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1877 (r->metadata_addr() >= metadata_begin() && r->metadata_addr() < metadata_end()), |
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1878 "metadata must be found in exactly one place"); |
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1879 if (r->metadata_is_immediate() && r->metadata_value() != NULL) { |
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1880 Metadata* md = r->metadata_value(); |
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1881 f(md); |
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1882 } |
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1883 } else if (iter.type() == relocInfo::virtual_call_type) { |
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1884 // Check compiledIC holders associated with this nmethod |
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1885 CompiledIC *ic = CompiledIC_at(iter.reloc()); |
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1886 if (ic->is_icholder_call()) { |
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1887 CompiledICHolder* cichk = ic->cached_icholder(); |
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1888 f(cichk->holder_method()); |
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1889 f(cichk->holder_klass()); |
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1890 } else { |
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1891 Metadata* ic_oop = ic->cached_metadata(); |
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1892 if (ic_oop != NULL) { |
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1893 f(ic_oop); |
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1894 } |
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1895 } |
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1896 } |
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1897 } |
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1898 } |
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1899 |
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1900 // Visit the metadata section |
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1901 for (Metadata** p = metadata_begin(); p < metadata_end(); p++) { |
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1902 if (*p == Universe::non_oop_word() || *p == NULL) continue; // skip non-oops |
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1903 Metadata* md = *p; |
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1904 f(md); |
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1905 } |
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1906 |
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1907 // Call function Method*, not embedded in these other places. |
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1908 if (_method != NULL) f(_method); |
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1909 } |
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1910 |
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1911 |
941 | 1912 // This method is called twice during GC -- once while |
1913 // tracing the "active" nmethods on thread stacks during | |
1914 // the (strong) marking phase, and then again when walking | |
1915 // the code cache contents during the weak roots processing | |
1916 // phase. The two uses are distinguished by means of the | |
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1917 // 'do_strong_roots_only' flag, which is true in the first |
941 | 1918 // case. We want to walk the weak roots in the nmethod |
1919 // only in the second case. The weak roots in the nmethod | |
1920 // are the oops in the ExceptionCache and the InlineCache | |
1921 // oops. | |
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1922 void nmethod::oops_do(OopClosure* f, bool do_strong_roots_only) { |
0 | 1923 // make sure the oops ready to receive visitors |
1924 assert(!is_zombie() && !is_unloaded(), | |
1925 "should not call follow on zombie or unloaded nmethod"); | |
1926 | |
1927 // If the method is not entrant or zombie then a JMP is plastered over the | |
1928 // first few bytes. If an oop in the old code was there, that oop | |
1929 // should not get GC'd. Skip the first few bytes of oops on | |
1930 // not-entrant methods. | |
1931 address low_boundary = verified_entry_point(); | |
1932 if (is_not_entrant()) { | |
1933 low_boundary += NativeJump::instruction_size; | |
1934 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
1935 // (See comment above.) | |
1936 } | |
1937 | |
9707 | 1938 #ifdef GRAAL |
1939 if (_graal_installed_code != NULL) { | |
1940 f->do_oop((oop*) &_graal_installed_code); | |
1941 } | |
1942 if (_triggered_deoptimizations != NULL) { | |
1943 f->do_oop((oop*) &_triggered_deoptimizations); | |
1944 } | |
1945 #endif | |
1946 | |
0 | 1947 RelocIterator iter(this, low_boundary); |
941 | 1948 |
0 | 1949 while (iter.next()) { |
1950 if (iter.type() == relocInfo::oop_type ) { | |
1951 oop_Relocation* r = iter.oop_reloc(); | |
1952 // In this loop, we must only follow those oops directly embedded in | |
1953 // the code. Other oops (oop_index>0) are seen as part of scopes_oops. | |
941 | 1954 assert(1 == (r->oop_is_immediate()) + |
1955 (r->oop_addr() >= oops_begin() && r->oop_addr() < oops_end()), | |
1956 "oop must be found in exactly one place"); | |
0 | 1957 if (r->oop_is_immediate() && r->oop_value() != NULL) { |
1958 f->do_oop(r->oop_addr()); | |
1959 } | |
1960 } | |
1961 } | |
1962 | |
1963 // Scopes | |
989
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1964 // This includes oop constants not inlined in the code stream. |
0 | 1965 for (oop* p = oops_begin(); p < oops_end(); p++) { |
1966 if (*p == Universe::non_oop_word()) continue; // skip non-oops | |
1967 f->do_oop(p); | |
1968 } | |
1969 } | |
1970 | |
989
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1971 #define NMETHOD_SENTINEL ((nmethod*)badAddress) |
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1972 |
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1973 nmethod* volatile nmethod::_oops_do_mark_nmethods; |
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1974 |
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1975 // An nmethod is "marked" if its _mark_link is set non-null. |
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1976 // Even if it is the end of the linked list, it will have a non-null link value, |
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1977 // as long as it is on the list. |
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1978 // This code must be MP safe, because it is used from parallel GC passes. |
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1979 bool nmethod::test_set_oops_do_mark() { |
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1980 assert(nmethod::oops_do_marking_is_active(), "oops_do_marking_prologue must be called"); |
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1981 nmethod* observed_mark_link = _oops_do_mark_link; |
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1982 if (observed_mark_link == NULL) { |
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1983 // Claim this nmethod for this thread to mark. |
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1984 observed_mark_link = (nmethod*) |
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1985 Atomic::cmpxchg_ptr(NMETHOD_SENTINEL, &_oops_do_mark_link, NULL); |
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1986 if (observed_mark_link == NULL) { |
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1987 |
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1988 // Atomically append this nmethod (now claimed) to the head of the list: |
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1989 nmethod* observed_mark_nmethods = _oops_do_mark_nmethods; |
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1990 for (;;) { |
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1991 nmethod* required_mark_nmethods = observed_mark_nmethods; |
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1992 _oops_do_mark_link = required_mark_nmethods; |
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1993 observed_mark_nmethods = (nmethod*) |
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1994 Atomic::cmpxchg_ptr(this, &_oops_do_mark_nmethods, required_mark_nmethods); |
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1995 if (observed_mark_nmethods == required_mark_nmethods) |
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1996 break; |
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1997 } |
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1998 // Mark was clear when we first saw this guy. |
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1999 NOT_PRODUCT(if (TraceScavenge) print_on(tty, "oops_do, mark")); |
989
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2000 return false; |
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2001 } |
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2002 } |
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2003 // On fall through, another racing thread marked this nmethod before we did. |
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2004 return true; |
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2005 } |
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2006 |
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2007 void nmethod::oops_do_marking_prologue() { |
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2008 NOT_PRODUCT(if (TraceScavenge) tty->print_cr("[oops_do_marking_prologue")); |
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2009 assert(_oops_do_mark_nmethods == NULL, "must not call oops_do_marking_prologue twice in a row"); |
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2010 // We use cmpxchg_ptr instead of regular assignment here because the user |
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2011 // may fork a bunch of threads, and we need them all to see the same state. |
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2012 void* observed = Atomic::cmpxchg_ptr(NMETHOD_SENTINEL, &_oops_do_mark_nmethods, NULL); |
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2013 guarantee(observed == NULL, "no races in this sequential code"); |
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2014 } |
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2015 |
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2016 void nmethod::oops_do_marking_epilogue() { |
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2017 assert(_oops_do_mark_nmethods != NULL, "must not call oops_do_marking_epilogue twice in a row"); |
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2018 nmethod* cur = _oops_do_mark_nmethods; |
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2019 while (cur != NMETHOD_SENTINEL) { |
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2020 assert(cur != NULL, "not NULL-terminated"); |
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2021 nmethod* next = cur->_oops_do_mark_link; |
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2022 cur->_oops_do_mark_link = NULL; |
2375
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2023 cur->fix_oop_relocations(); |
2405
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2024 NOT_PRODUCT(if (TraceScavenge) cur->print_on(tty, "oops_do, unmark")); |
989
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2025 cur = next; |
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2026 } |
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2027 void* required = _oops_do_mark_nmethods; |
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2028 void* observed = Atomic::cmpxchg_ptr(NULL, &_oops_do_mark_nmethods, required); |
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2029 guarantee(observed == required, "no races in this sequential code"); |
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2030 NOT_PRODUCT(if (TraceScavenge) tty->print_cr("oops_do_marking_epilogue]")); |
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2031 } |
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2032 |
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2033 class DetectScavengeRoot: public OopClosure { |
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2034 bool _detected_scavenge_root; |
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2035 public: |
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2036 DetectScavengeRoot() : _detected_scavenge_root(false) |
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2037 { NOT_PRODUCT(_print_nm = NULL); } |
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2038 bool detected_scavenge_root() { return _detected_scavenge_root; } |
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2039 virtual void do_oop(oop* p) { |
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2040 if ((*p) != NULL && (*p)->is_scavengable()) { |
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2041 NOT_PRODUCT(maybe_print(p)); |
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2042 _detected_scavenge_root = true; |
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2043 } |
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2044 } |
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2045 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
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2046 |
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2047 #ifndef PRODUCT |
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2048 nmethod* _print_nm; |
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2049 void maybe_print(oop* p) { |
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2050 if (_print_nm == NULL) return; |
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2051 if (!_detected_scavenge_root) _print_nm->print_on(tty, "new scavenge root"); |
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2052 tty->print_cr(""PTR_FORMAT"[offset=%d] detected scavengable oop "PTR_FORMAT" (found at "PTR_FORMAT")", |
989
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2053 _print_nm, (int)((intptr_t)p - (intptr_t)_print_nm), |
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2054 (intptr_t)(*p), (intptr_t)p); |
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2055 (*p)->print(); |
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2056 } |
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2057 #endif //PRODUCT |
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2058 }; |
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2059 |
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2060 bool nmethod::detect_scavenge_root_oops() { |
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2061 DetectScavengeRoot detect_scavenge_root; |
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2062 NOT_PRODUCT(if (TraceScavenge) detect_scavenge_root._print_nm = this); |
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2063 oops_do(&detect_scavenge_root); |
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2064 return detect_scavenge_root.detected_scavenge_root(); |
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2065 } |
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2066 |
0 | 2067 // Method that knows how to preserve outgoing arguments at call. This method must be |
2068 // called with a frame corresponding to a Java invoke | |
2069 void nmethod::preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { | |
1692 | 2070 #ifndef SHARK |
0 | 2071 if (!method()->is_native()) { |
2072 SimpleScopeDesc ssd(this, fr.pc()); | |
2142 | 2073 Bytecode_invoke call(ssd.method(), ssd.bci()); |
10390 | 2074 bool has_receiver = call.has_receiver(); |
2075 bool has_appendix = call.has_appendix(); | |
2177
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2076 Symbol* signature = call.signature(); |
10390 | 2077 fr.oops_compiled_arguments_do(signature, has_receiver, has_appendix, reg_map, f); |
0 | 2078 } |
1692 | 2079 #endif // !SHARK |
0 | 2080 } |
2081 | |
2082 | |
2083 oop nmethod::embeddedOop_at(u_char* p) { | |
2349
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2084 RelocIterator iter(this, p, p + 1); |
0 | 2085 while (iter.next()) |
2086 if (iter.type() == relocInfo::oop_type) { | |
2087 return iter.oop_reloc()->oop_value(); | |
2088 } | |
2089 return NULL; | |
2090 } | |
2091 | |
2092 | |
2093 inline bool includes(void* p, void* from, void* to) { | |
2094 return from <= p && p < to; | |
2095 } | |
2096 | |
2097 | |
2098 void nmethod::copy_scopes_pcs(PcDesc* pcs, int count) { | |
2099 assert(count >= 2, "must be sentinel values, at least"); | |
2100 | |
2101 #ifdef ASSERT | |
2102 // must be sorted and unique; we do a binary search in find_pc_desc() | |
2103 int prev_offset = pcs[0].pc_offset(); | |
2104 assert(prev_offset == PcDesc::lower_offset_limit, | |
2105 "must start with a sentinel"); | |
2106 for (int i = 1; i < count; i++) { | |
2107 int this_offset = pcs[i].pc_offset(); | |
2108 assert(this_offset > prev_offset, "offsets must be sorted"); | |
2109 prev_offset = this_offset; | |
2110 } | |
2111 assert(prev_offset == PcDesc::upper_offset_limit, | |
2112 "must end with a sentinel"); | |
2113 #endif //ASSERT | |
2114 | |
1135
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2115 // Search for MethodHandle invokes and tag the nmethod. |
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2116 for (int i = 0; i < count; i++) { |
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2117 if (pcs[i].is_method_handle_invoke()) { |
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2118 set_has_method_handle_invokes(true); |
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2119 break; |
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2120 } |
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2121 } |
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2122 assert(has_method_handle_invokes() == (_deoptimize_mh_offset != -1), "must have deopt mh handler"); |
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2123 |
0 | 2124 int size = count * sizeof(PcDesc); |
2125 assert(scopes_pcs_size() >= size, "oob"); | |
2126 memcpy(scopes_pcs_begin(), pcs, size); | |
2127 | |
2128 // Adjust the final sentinel downward. | |
2129 PcDesc* last_pc = &scopes_pcs_begin()[count-1]; | |
2130 assert(last_pc->pc_offset() == PcDesc::upper_offset_limit, "sanity"); | |
1748 | 2131 last_pc->set_pc_offset(content_size() + 1); |
0 | 2132 for (; last_pc + 1 < scopes_pcs_end(); last_pc += 1) { |
2133 // Fill any rounding gaps with copies of the last record. | |
2134 last_pc[1] = last_pc[0]; | |
2135 } | |
2136 // The following assert could fail if sizeof(PcDesc) is not | |
2137 // an integral multiple of oopSize (the rounding term). | |
2138 // If it fails, change the logic to always allocate a multiple | |
2139 // of sizeof(PcDesc), and fill unused words with copies of *last_pc. | |
2140 assert(last_pc + 1 == scopes_pcs_end(), "must match exactly"); | |
2141 } | |
2142 | |
2143 void nmethod::copy_scopes_data(u_char* buffer, int size) { | |
2144 assert(scopes_data_size() >= size, "oob"); | |
2145 memcpy(scopes_data_begin(), buffer, size); | |
2146 } | |
2147 | |
2148 | |
2149 #ifdef ASSERT | |
2150 static PcDesc* linear_search(nmethod* nm, int pc_offset, bool approximate) { | |
2151 PcDesc* lower = nm->scopes_pcs_begin(); | |
2152 PcDesc* upper = nm->scopes_pcs_end(); | |
2153 lower += 1; // exclude initial sentinel | |
2154 PcDesc* res = NULL; | |
2155 for (PcDesc* p = lower; p < upper; p++) { | |
2156 NOT_PRODUCT(--nmethod_stats.pc_desc_tests); // don't count this call to match_desc | |
2157 if (match_desc(p, pc_offset, approximate)) { | |
2158 if (res == NULL) | |
2159 res = p; | |
2160 else | |
2161 res = (PcDesc*) badAddress; | |
2162 } | |
2163 } | |
2164 return res; | |
2165 } | |
2166 #endif | |
2167 | |
2168 | |
2169 // Finds a PcDesc with real-pc equal to "pc" | |
2170 PcDesc* nmethod::find_pc_desc_internal(address pc, bool approximate) { | |
1748 | 2171 address base_address = code_begin(); |
0 | 2172 if ((pc < base_address) || |
2173 (pc - base_address) >= (ptrdiff_t) PcDesc::upper_offset_limit) { | |
2174 return NULL; // PC is wildly out of range | |
2175 } | |
2176 int pc_offset = (int) (pc - base_address); | |
2177 | |
2178 // Check the PcDesc cache if it contains the desired PcDesc | |
2179 // (This as an almost 100% hit rate.) | |
2180 PcDesc* res = _pc_desc_cache.find_pc_desc(pc_offset, approximate); | |
2181 if (res != NULL) { | |
2182 assert(res == linear_search(this, pc_offset, approximate), "cache ok"); | |
2183 return res; | |
2184 } | |
2185 | |
2186 // Fallback algorithm: quasi-linear search for the PcDesc | |
2187 // Find the last pc_offset less than the given offset. | |
2188 // The successor must be the required match, if there is a match at all. | |
2189 // (Use a fixed radix to avoid expensive affine pointer arithmetic.) | |
2190 PcDesc* lower = scopes_pcs_begin(); | |
2191 PcDesc* upper = scopes_pcs_end(); | |
2192 upper -= 1; // exclude final sentinel | |
2193 if (lower >= upper) return NULL; // native method; no PcDescs at all | |
2194 | |
2195 #define assert_LU_OK \ | |
2196 /* invariant on lower..upper during the following search: */ \ | |
2197 assert(lower->pc_offset() < pc_offset, "sanity"); \ | |
2198 assert(upper->pc_offset() >= pc_offset, "sanity") | |
2199 assert_LU_OK; | |
2200 | |
2201 // Use the last successful return as a split point. | |
2202 PcDesc* mid = _pc_desc_cache.last_pc_desc(); | |
2203 NOT_PRODUCT(++nmethod_stats.pc_desc_searches); | |
2204 if (mid->pc_offset() < pc_offset) { | |
2205 lower = mid; | |
2206 } else { | |
2207 upper = mid; | |
2208 } | |
2209 | |
2210 // Take giant steps at first (4096, then 256, then 16, then 1) | |
2211 const int LOG2_RADIX = 4 /*smaller steps in debug mode:*/ debug_only(-1); | |
2212 const int RADIX = (1 << LOG2_RADIX); | |
2213 for (int step = (1 << (LOG2_RADIX*3)); step > 1; step >>= LOG2_RADIX) { | |
2214 while ((mid = lower + step) < upper) { | |
2215 assert_LU_OK; | |
2216 NOT_PRODUCT(++nmethod_stats.pc_desc_searches); | |
2217 if (mid->pc_offset() < pc_offset) { | |
2218 lower = mid; | |
2219 } else { | |
2220 upper = mid; | |
2221 break; | |
2222 } | |
2223 } | |
2224 assert_LU_OK; | |
2225 } | |
2226 | |
2227 // Sneak up on the value with a linear search of length ~16. | |
2228 while (true) { | |
2229 assert_LU_OK; | |
2230 mid = lower + 1; | |
2231 NOT_PRODUCT(++nmethod_stats.pc_desc_searches); | |
2232 if (mid->pc_offset() < pc_offset) { | |
2233 lower = mid; | |
2234 } else { | |
2235 upper = mid; | |
2236 break; | |
2237 } | |
2238 } | |
2239 #undef assert_LU_OK | |
2240 | |
2241 if (match_desc(upper, pc_offset, approximate)) { | |
2242 assert(upper == linear_search(this, pc_offset, approximate), "search ok"); | |
2243 _pc_desc_cache.add_pc_desc(upper); | |
2244 return upper; | |
2245 } else { | |
2246 assert(NULL == linear_search(this, pc_offset, approximate), "search ok"); | |
2247 return NULL; | |
2248 } | |
2249 } | |
2250 | |
2251 | |
2252 bool nmethod::check_all_dependencies() { | |
2253 bool found_check = false; | |
2254 // wholesale check of all dependencies | |
2255 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
2256 if (deps.check_dependency() != NULL) { | |
2257 found_check = true; | |
2258 NOT_DEBUG(break); | |
2259 } | |
2260 } | |
2261 return found_check; // tell caller if we found anything | |
2262 } | |
2263 | |
2264 bool nmethod::check_dependency_on(DepChange& changes) { | |
2265 // What has happened: | |
2266 // 1) a new class dependee has been added | |
2267 // 2) dependee and all its super classes have been marked | |
2268 bool found_check = false; // set true if we are upset | |
2269 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
2270 // Evaluate only relevant dependencies. | |
2271 if (deps.spot_check_dependency_at(changes) != NULL) { | |
2272 found_check = true; | |
2273 NOT_DEBUG(break); | |
2274 } | |
2275 } | |
2276 return found_check; | |
2277 } | |
2278 | |
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2279 bool nmethod::is_evol_dependent_on(Klass* dependee) { |
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2280 InstanceKlass *dependee_ik = InstanceKlass::cast(dependee); |
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2281 Array<Method*>* dependee_methods = dependee_ik->methods(); |
0 | 2282 for (Dependencies::DepStream deps(this); deps.next(); ) { |
2283 if (deps.type() == Dependencies::evol_method) { | |
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2284 Method* method = deps.method_argument(0); |
0 | 2285 for (int j = 0; j < dependee_methods->length(); j++) { |
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2286 if (dependee_methods->at(j) == method) { |
0 | 2287 // RC_TRACE macro has an embedded ResourceMark |
2288 RC_TRACE(0x01000000, | |
2289 ("Found evol dependency of nmethod %s.%s(%s) compile_id=%d on method %s.%s(%s)", | |
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2290 _method->method_holder()->external_name(), |
0 | 2291 _method->name()->as_C_string(), |
2292 _method->signature()->as_C_string(), compile_id(), | |
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2293 method->method_holder()->external_name(), |
0 | 2294 method->name()->as_C_string(), |
2295 method->signature()->as_C_string())); | |
2296 if (TraceDependencies || LogCompilation) | |
2297 deps.log_dependency(dependee); | |
2298 return true; | |
2299 } | |
2300 } | |
2301 } | |
2302 } | |
2303 return false; | |
2304 } | |
2305 | |
2306 // Called from mark_for_deoptimization, when dependee is invalidated. | |
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2307 bool nmethod::is_dependent_on_method(Method* dependee) { |
0 | 2308 for (Dependencies::DepStream deps(this); deps.next(); ) { |
2309 if (deps.type() != Dependencies::evol_method) | |
2310 continue; | |
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2311 Method* method = deps.method_argument(0); |
0 | 2312 if (method == dependee) return true; |
2313 } | |
2314 return false; | |
2315 } | |
2316 | |
2317 | |
2318 bool nmethod::is_patchable_at(address instr_addr) { | |
1748 | 2319 assert(insts_contains(instr_addr), "wrong nmethod used"); |
0 | 2320 if (is_zombie()) { |
2321 // a zombie may never be patched | |
2322 return false; | |
2323 } | |
2324 return true; | |
2325 } | |
2326 | |
2327 | |
2328 address nmethod::continuation_for_implicit_exception(address pc) { | |
2329 // Exception happened outside inline-cache check code => we are inside | |
2330 // an active nmethod => use cpc to determine a return address | |
1748 | 2331 int exception_offset = pc - code_begin(); |
0 | 2332 int cont_offset = ImplicitExceptionTable(this).at( exception_offset ); |
2333 #ifdef ASSERT | |
2334 if (cont_offset == 0) { | |
2335 Thread* thread = ThreadLocalStorage::get_thread_slow(); | |
2336 ResetNoHandleMark rnm; // Might be called from LEAF/QUICK ENTRY | |
2337 HandleMark hm(thread); | |
2338 ResourceMark rm(thread); | |
2339 CodeBlob* cb = CodeCache::find_blob(pc); | |
2340 assert(cb != NULL && cb == this, ""); | |
2341 tty->print_cr("implicit exception happened at " INTPTR_FORMAT, pc); | |
2342 print(); | |
2343 method()->print_codes(); | |
2344 print_code(); | |
2345 print_pcs(); | |
2346 } | |
2347 #endif | |
1250 | 2348 if (cont_offset == 0) { |
2349 // Let the normal error handling report the exception | |
2350 return NULL; | |
2351 } | |
1748 | 2352 return code_begin() + cont_offset; |
0 | 2353 } |
2354 | |
2355 | |
2356 | |
2357 void nmethod_init() { | |
2358 // make sure you didn't forget to adjust the filler fields | |
2359 assert(sizeof(nmethod) % oopSize == 0, "nmethod size must be multiple of a word"); | |
2360 } | |
2361 | |
2362 | |
2363 //------------------------------------------------------------------------------------------- | |
2364 | |
2365 | |
2366 // QQQ might we make this work from a frame?? | |
2367 nmethodLocker::nmethodLocker(address pc) { | |
2368 CodeBlob* cb = CodeCache::find_blob(pc); | |
2369 guarantee(cb != NULL && cb->is_nmethod(), "bad pc for a nmethod found"); | |
2370 _nm = (nmethod*)cb; | |
2371 lock_nmethod(_nm); | |
2372 } | |
2373 | |
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2374 // Only JvmtiDeferredEvent::compiled_method_unload_event() |
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2375 // should pass zombie_ok == true. |
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2376 void nmethodLocker::lock_nmethod(nmethod* nm, bool zombie_ok) { |
0 | 2377 if (nm == NULL) return; |
2378 Atomic::inc(&nm->_lock_count); | |
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2379 guarantee(zombie_ok || !nm->is_zombie(), "cannot lock a zombie method"); |
0 | 2380 } |
2381 | |
2382 void nmethodLocker::unlock_nmethod(nmethod* nm) { | |
2383 if (nm == NULL) return; | |
2384 Atomic::dec(&nm->_lock_count); | |
2385 guarantee(nm->_lock_count >= 0, "unmatched nmethod lock/unlock"); | |
2386 } | |
2387 | |
1204 | 2388 |
2389 // ----------------------------------------------------------------------------- | |
2390 // nmethod::get_deopt_original_pc | |
2391 // | |
2392 // Return the original PC for the given PC if: | |
2393 // (a) the given PC belongs to a nmethod and | |
2394 // (b) it is a deopt PC | |
2395 address nmethod::get_deopt_original_pc(const frame* fr) { | |
2396 if (fr->cb() == NULL) return NULL; | |
2397 | |
2398 nmethod* nm = fr->cb()->as_nmethod_or_null(); | |
2399 if (nm != NULL && nm->is_deopt_pc(fr->pc())) | |
2400 return nm->get_original_pc(fr); | |
2401 | |
2402 return NULL; | |
0 | 2403 } |
2404 | |
2405 | |
2406 // ----------------------------------------------------------------------------- | |
1135
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2407 // MethodHandle |
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2408 |
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2409 bool nmethod::is_method_handle_return(address return_pc) { |
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2410 if (!has_method_handle_invokes()) return false; |
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2411 PcDesc* pd = pc_desc_at(return_pc); |
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2412 if (pd == NULL) |
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2413 return false; |
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2414 return pd->is_method_handle_invoke(); |
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2415 } |
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2416 |
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2417 |
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2418 // ----------------------------------------------------------------------------- |
0 | 2419 // Verification |
2420 | |
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2421 class VerifyOopsClosure: public OopClosure { |
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2422 nmethod* _nm; |
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2423 bool _ok; |
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2424 public: |
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2425 VerifyOopsClosure(nmethod* nm) : _nm(nm), _ok(true) { } |
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2426 bool ok() { return _ok; } |
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2427 virtual void do_oop(oop* p) { |
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2428 if ((*p) == NULL || (*p)->is_oop()) return; |
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2429 if (_ok) { |
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2430 _nm->print_nmethod(true); |
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2431 _ok = false; |
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2432 } |
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2433 tty->print_cr("*** non-oop "PTR_FORMAT" found at "PTR_FORMAT" (offset %d)", |
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2434 (intptr_t)(*p), (intptr_t)p, (int)((intptr_t)p - (intptr_t)_nm)); |
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2435 } |
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2436 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
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2437 }; |
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2438 |
0 | 2439 void nmethod::verify() { |
2440 | |
2441 // Hmm. OSR methods can be deopted but not marked as zombie or not_entrant | |
2442 // seems odd. | |
2443 | |
2444 if( is_zombie() || is_not_entrant() ) | |
2445 return; | |
2446 | |
2447 // Make sure all the entry points are correctly aligned for patching. | |
2448 NativeJump::check_verified_entry_alignment(entry_point(), verified_entry_point()); | |
2449 | |
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2450 // assert(method()->is_oop(), "must be valid"); |
0 | 2451 |
2452 ResourceMark rm; | |
2453 | |
2454 if (!CodeCache::contains(this)) { | |
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2455 fatal(err_msg("nmethod at " INTPTR_FORMAT " not in zone", this)); |
0 | 2456 } |
2457 | |
2458 if(is_native_method() ) | |
2459 return; | |
2460 | |
2461 nmethod* nm = CodeCache::find_nmethod(verified_entry_point()); | |
2462 if (nm != this) { | |
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2463 fatal(err_msg("findNMethod did not find this nmethod (" INTPTR_FORMAT ")", |
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2464 this)); |
0 | 2465 } |
2466 | |
2467 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
2468 if (! p->verify(this)) { | |
2469 tty->print_cr("\t\tin nmethod at " INTPTR_FORMAT " (pcs)", this); | |
2470 } | |
2471 } | |
2472 | |
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2473 VerifyOopsClosure voc(this); |
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2474 oops_do(&voc); |
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2475 assert(voc.ok(), "embedded oops must be OK"); |
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2476 verify_scavenge_root_oops(); |
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2477 |
0 | 2478 verify_scopes(); |
2479 } | |
2480 | |
2481 | |
2482 void nmethod::verify_interrupt_point(address call_site) { | |
2483 // This code does not work in release mode since | |
2484 // owns_lock only is available in debug mode. | |
2485 CompiledIC* ic = NULL; | |
2486 Thread *cur = Thread::current(); | |
2487 if (CompiledIC_lock->owner() == cur || | |
2488 ((cur->is_VM_thread() || cur->is_ConcurrentGC_thread()) && | |
2489 SafepointSynchronize::is_at_safepoint())) { | |
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2490 ic = CompiledIC_at(this, call_site); |
0 | 2491 CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops()); |
2492 } else { | |
2493 MutexLocker ml_verify (CompiledIC_lock); | |
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2494 ic = CompiledIC_at(this, call_site); |
0 | 2495 } |
9707 | 2496 |
0 | 2497 PcDesc* pd = pc_desc_at(ic->end_of_call()); |
2498 assert(pd != NULL, "PcDesc must exist"); | |
2499 for (ScopeDesc* sd = new ScopeDesc(this, pd->scope_decode_offset(), | |
9707 | 2500 pd->obj_decode_offset(), pd->should_reexecute(), pd->rethrow_exception(), |
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2501 pd->return_oop()); |
0 | 2502 !sd->is_top(); sd = sd->sender()) { |
2503 sd->verify(); | |
2504 } | |
2505 } | |
2506 | |
2507 void nmethod::verify_scopes() { | |
2508 if( !method() ) return; // Runtime stubs have no scope | |
2509 if (method()->is_native()) return; // Ignore stub methods. | |
2510 // iterate through all interrupt point | |
2511 // and verify the debug information is valid. | |
2512 RelocIterator iter((nmethod*)this); | |
2513 while (iter.next()) { | |
2514 address stub = NULL; | |
2515 switch (iter.type()) { | |
2516 case relocInfo::virtual_call_type: | |
2517 verify_interrupt_point(iter.addr()); | |
2518 break; | |
2519 case relocInfo::opt_virtual_call_type: | |
2520 stub = iter.opt_virtual_call_reloc()->static_stub(); | |
2521 verify_interrupt_point(iter.addr()); | |
2522 break; | |
2523 case relocInfo::static_call_type: | |
2524 stub = iter.static_call_reloc()->static_stub(); | |
2525 //verify_interrupt_point(iter.addr()); | |
2526 break; | |
2527 case relocInfo::runtime_call_type: | |
2528 address destination = iter.reloc()->value(); | |
2529 // Right now there is no way to find out which entries support | |
2530 // an interrupt point. It would be nice if we had this | |
2531 // information in a table. | |
2532 break; | |
2533 } | |
2534 assert(stub == NULL || stub_contains(stub), "static call stub outside stub section"); | |
2535 } | |
2536 } | |
2537 | |
2538 | |
2539 // ----------------------------------------------------------------------------- | |
2540 // Non-product code | |
2541 #ifndef PRODUCT | |
2542 | |
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2543 class DebugScavengeRoot: public OopClosure { |
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2544 nmethod* _nm; |
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2545 bool _ok; |
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2546 public: |
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2547 DebugScavengeRoot(nmethod* nm) : _nm(nm), _ok(true) { } |
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2548 bool ok() { return _ok; } |
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2549 virtual void do_oop(oop* p) { |
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2550 if ((*p) == NULL || !(*p)->is_scavengable()) return; |
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2551 if (_ok) { |
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2552 _nm->print_nmethod(true); |
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2553 _ok = false; |
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2554 } |
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2555 tty->print_cr("*** scavengable oop "PTR_FORMAT" found at "PTR_FORMAT" (offset %d)", |
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2556 (intptr_t)(*p), (intptr_t)p, (int)((intptr_t)p - (intptr_t)_nm)); |
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2557 (*p)->print(); |
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|
2558 } |
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2559 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
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2560 }; |
0 | 2561 |
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2562 void nmethod::verify_scavenge_root_oops() { |
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2563 if (!on_scavenge_root_list()) { |
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2564 // Actually look inside, to verify the claim that it's clean. |
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2565 DebugScavengeRoot debug_scavenge_root(this); |
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2566 oops_do(&debug_scavenge_root); |
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2567 if (!debug_scavenge_root.ok()) |
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2568 fatal("found an unadvertised bad scavengable oop in the code cache"); |
0 | 2569 } |
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2570 assert(scavenge_root_not_marked(), ""); |
0 | 2571 } |
2572 | |
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2573 #endif // PRODUCT |
0 | 2574 |
2575 // Printing operations | |
2576 | |
2577 void nmethod::print() const { | |
2578 ResourceMark rm; | |
2579 ttyLocker ttyl; // keep the following output all in one block | |
2580 | |
2405
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2581 tty->print("Compiled method "); |
0 | 2582 |
2583 if (is_compiled_by_c1()) { | |
2584 tty->print("(c1) "); | |
2585 } else if (is_compiled_by_c2()) { | |
2586 tty->print("(c2) "); | |
1692 | 2587 } else if (is_compiled_by_shark()) { |
2588 tty->print("(shark) "); | |
9707 | 2589 } else if (is_compiled_by_graal()) { |
2590 tty->print("(Graal) "); | |
0 | 2591 } else { |
2592 tty->print("(nm) "); | |
2593 } | |
2594 | |
2405
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2595 print_on(tty, NULL); |
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2596 |
0 | 2597 if (WizardMode) { |
2598 tty->print("((nmethod*) "INTPTR_FORMAT ") ", this); | |
2599 tty->print(" for method " INTPTR_FORMAT , (address)method()); | |
2600 tty->print(" { "); | |
2601 if (is_in_use()) tty->print("in_use "); | |
2602 if (is_not_entrant()) tty->print("not_entrant "); | |
2603 if (is_zombie()) tty->print("zombie "); | |
2604 if (is_unloaded()) tty->print("unloaded "); | |
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2605 if (on_scavenge_root_list()) tty->print("scavenge_root "); |
0 | 2606 tty->print_cr("}:"); |
2607 } | |
2608 if (size () > 0) tty->print_cr(" total in heap [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2609 (address)this, | |
2610 (address)this + size(), | |
2611 size()); | |
2612 if (relocation_size () > 0) tty->print_cr(" relocation [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2613 relocation_begin(), | |
2614 relocation_end(), | |
2615 relocation_size()); | |
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2616 if (consts_size () > 0) tty->print_cr(" constants [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
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2617 consts_begin(), |
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2618 consts_end(), |
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2619 consts_size()); |
1748 | 2620 if (insts_size () > 0) tty->print_cr(" main code [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
2621 insts_begin(), | |
2622 insts_end(), | |
2623 insts_size()); | |
0 | 2624 if (stub_size () > 0) tty->print_cr(" stub code [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
2625 stub_begin(), | |
2626 stub_end(), | |
2627 stub_size()); | |
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2628 if (oops_size () > 0) tty->print_cr(" oops [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
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2629 oops_begin(), |
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2630 oops_end(), |
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2631 oops_size()); |
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2632 if (metadata_size () > 0) tty->print_cr(" metadata [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
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2633 metadata_begin(), |
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2634 metadata_end(), |
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2635 metadata_size()); |
0 | 2636 if (scopes_data_size () > 0) tty->print_cr(" scopes data [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
2637 scopes_data_begin(), | |
2638 scopes_data_end(), | |
2639 scopes_data_size()); | |
2640 if (scopes_pcs_size () > 0) tty->print_cr(" scopes pcs [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2641 scopes_pcs_begin(), | |
2642 scopes_pcs_end(), | |
2643 scopes_pcs_size()); | |
2644 if (dependencies_size () > 0) tty->print_cr(" dependencies [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2645 dependencies_begin(), | |
2646 dependencies_end(), | |
2647 dependencies_size()); | |
2648 if (handler_table_size() > 0) tty->print_cr(" handler table [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2649 handler_table_begin(), | |
2650 handler_table_end(), | |
2651 handler_table_size()); | |
2652 if (nul_chk_table_size() > 0) tty->print_cr(" nul chk table [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2653 nul_chk_table_begin(), | |
2654 nul_chk_table_end(), | |
2655 nul_chk_table_size()); | |
2656 } | |
2657 | |
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2658 void nmethod::print_code() { |
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2659 HandleMark hm; |
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2660 ResourceMark m; |
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2661 Disassembler::decode(this); |
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2662 } |
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2663 |
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2664 |
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2665 #ifndef PRODUCT |
0 | 2666 |
2667 void nmethod::print_scopes() { | |
2668 // Find the first pc desc for all scopes in the code and print it. | |
2669 ResourceMark rm; | |
2670 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
2671 if (p->scope_decode_offset() == DebugInformationRecorder::serialized_null) | |
2672 continue; | |
2673 | |
2674 ScopeDesc* sd = scope_desc_at(p->real_pc(this)); | |
2675 sd->print_on(tty, p); | |
2676 } | |
2677 } | |
2678 | |
2679 void nmethod::print_dependencies() { | |
2680 ResourceMark rm; | |
2681 ttyLocker ttyl; // keep the following output all in one block | |
2682 tty->print_cr("Dependencies:"); | |
2683 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
2684 deps.print_dependency(); | |
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2685 Klass* ctxk = deps.context_type(); |
0 | 2686 if (ctxk != NULL) { |
6983 | 2687 if (ctxk->oop_is_instance() && ((InstanceKlass*)ctxk)->is_dependent_nmethod(this)) { |
2688 tty->print_cr(" [nmethod<=klass]%s", ctxk->external_name()); | |
0 | 2689 } |
2690 } | |
2691 deps.log_dependency(); // put it into the xml log also | |
2692 } | |
2693 } | |
2694 | |
2695 | |
2696 void nmethod::print_relocations() { | |
2697 ResourceMark m; // in case methods get printed via the debugger | |
2698 tty->print_cr("relocations:"); | |
2699 RelocIterator iter(this); | |
2700 iter.print(); | |
2701 if (UseRelocIndex) { | |
2702 jint* index_end = (jint*)relocation_end() - 1; | |
2703 jint index_size = *index_end; | |
2704 jint* index_start = (jint*)( (address)index_end - index_size ); | |
2705 tty->print_cr(" index @" INTPTR_FORMAT ": index_size=%d", index_start, index_size); | |
2706 if (index_size > 0) { | |
2707 jint* ip; | |
2708 for (ip = index_start; ip+2 <= index_end; ip += 2) | |
2709 tty->print_cr(" (%d %d) addr=" INTPTR_FORMAT " @" INTPTR_FORMAT, | |
2710 ip[0], | |
2711 ip[1], | |
2712 header_end()+ip[0], | |
2713 relocation_begin()-1+ip[1]); | |
2714 for (; ip < index_end; ip++) | |
2715 tty->print_cr(" (%d ?)", ip[0]); | |
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2716 tty->print_cr(" @" INTPTR_FORMAT ": index_size=%d", ip, *ip); |
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2717 ip++; |
0 | 2718 tty->print_cr("reloc_end @" INTPTR_FORMAT ":", ip); |
2719 } | |
2720 } | |
2721 } | |
2722 | |
2723 | |
2724 void nmethod::print_pcs() { | |
2725 ResourceMark m; // in case methods get printed via debugger | |
2726 tty->print_cr("pc-bytecode offsets:"); | |
2727 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
2728 p->print(this); | |
2729 } | |
2730 } | |
2731 | |
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2732 #endif // PRODUCT |
0 | 2733 |
2734 const char* nmethod::reloc_string_for(u_char* begin, u_char* end) { | |
2735 RelocIterator iter(this, begin, end); | |
2736 bool have_one = false; | |
2737 while (iter.next()) { | |
2738 have_one = true; | |
2739 switch (iter.type()) { | |
2740 case relocInfo::none: return "no_reloc"; | |
2741 case relocInfo::oop_type: { | |
2742 stringStream st; | |
2743 oop_Relocation* r = iter.oop_reloc(); | |
2744 oop obj = r->oop_value(); | |
2745 st.print("oop("); | |
2746 if (obj == NULL) st.print("NULL"); | |
2747 else obj->print_value_on(&st); | |
2748 st.print(")"); | |
2749 return st.as_string(); | |
2750 } | |
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2751 case relocInfo::metadata_type: { |
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2752 stringStream st; |
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2753 metadata_Relocation* r = iter.metadata_reloc(); |
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2754 Metadata* obj = r->metadata_value(); |
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2755 st.print("metadata("); |
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2756 if (obj == NULL) st.print("NULL"); |
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2757 else obj->print_value_on(&st); |
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2758 st.print(")"); |
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2759 return st.as_string(); |
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2760 } |
0 | 2761 case relocInfo::virtual_call_type: return "virtual_call"; |
2762 case relocInfo::opt_virtual_call_type: return "optimized virtual_call"; | |
2763 case relocInfo::static_call_type: return "static_call"; | |
2764 case relocInfo::static_stub_type: return "static_stub"; | |
2765 case relocInfo::runtime_call_type: return "runtime_call"; | |
2766 case relocInfo::external_word_type: return "external_word"; | |
2767 case relocInfo::internal_word_type: return "internal_word"; | |
2768 case relocInfo::section_word_type: return "section_word"; | |
2769 case relocInfo::poll_type: return "poll"; | |
2770 case relocInfo::poll_return_type: return "poll_return"; | |
2771 case relocInfo::type_mask: return "type_bit_mask"; | |
2772 } | |
2773 } | |
2774 return have_one ? "other" : NULL; | |
2775 } | |
2776 | |
2777 // Return a the last scope in (begin..end] | |
2778 ScopeDesc* nmethod::scope_desc_in(address begin, address end) { | |
2779 PcDesc* p = pc_desc_near(begin+1); | |
2780 if (p != NULL && p->real_pc(this) <= end) { | |
2781 return new ScopeDesc(this, p->scope_decode_offset(), | |
9707 | 2782 p->obj_decode_offset(), p->should_reexecute(), p->rethrow_exception(), |
1253
f70b0d9ab095
6910618: C2: Error: assert(d->is_oop(),"JVM_ArrayCopy: dst not an oop")
kvn
parents:
1250
diff
changeset
|
2783 p->return_oop()); |
0 | 2784 } |
2785 return NULL; | |
2786 } | |
2787 | |
6796
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
parents:
6792
diff
changeset
|
2788 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:
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diff
changeset
|
2789 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
|
2790 if (block_begin == verified_entry_point()) stream->print_cr("[Verified Entry Point]"); |
9707 | 2791 if (GRAAL_ONLY(_exception_offset >= 0 &&) block_begin == exception_begin()) stream->print_cr("[Exception Handler]"); |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2792 if (block_begin == stub_begin()) stream->print_cr("[Stub Code]"); |
9707 | 2793 if (GRAAL_ONLY(_deoptimize_offset >= 0 &&) block_begin == deopt_handler_begin()) stream->print_cr("[Deopt Handler Code]"); |
1691
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
twisti
parents:
1644
diff
changeset
|
2794 |
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
twisti
parents:
1644
diff
changeset
|
2795 if (has_method_handle_invokes()) |
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
twisti
parents:
1644
diff
changeset
|
2796 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
|
2797 |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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1141
diff
changeset
|
2798 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
|
2799 |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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diff
changeset
|
2800 if (block_begin == entry_point()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2801 methodHandle m = method(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2802 if (m.not_null()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2803 stream->print(" # "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2804 m->print_value_on(stream); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2805 stream->cr(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
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1141
diff
changeset
|
2806 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2807 if (m.not_null() && !is_osr_method()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2808 ResourceMark rm; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2809 int sizeargs = m->size_of_parameters(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2810 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
|
2811 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, sizeargs); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2812 { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2813 int sig_index = 0; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2814 if (!m->is_static()) |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2815 sig_bt[sig_index++] = T_OBJECT; // 'this' |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2816 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
|
2817 BasicType t = ss.type(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2818 sig_bt[sig_index++] = t; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2819 if (type2size[t] == 2) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2820 sig_bt[sig_index++] = T_VOID; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2821 } else { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2822 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
|
2823 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2824 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2825 assert(sig_index == sizeargs, ""); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2826 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2827 const char* spname = "sp"; // make arch-specific? |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2828 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
|
2829 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
|
2830 int tab1 = 14, tab2 = 24; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2831 int sig_index = 0; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2832 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
|
2833 bool did_old_sp = false; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2834 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
|
2835 bool at_this = (arg_index == -1); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2836 bool at_old_sp = false; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2837 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
|
2838 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
|
2839 if (at_this) |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2840 stream->print(" # this: "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2841 else |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2842 stream->print(" # parm%d: ", arg_index); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2843 stream->move_to(tab1); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2844 VMReg fst = regs[sig_index].first(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2845 VMReg snd = regs[sig_index].second(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2846 if (fst->is_reg()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2847 stream->print("%s", fst->name()); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2848 if (snd->is_valid()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2849 stream->print(":%s", snd->name()); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2850 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2851 } else if (fst->is_stack()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2852 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
|
2853 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
|
2854 stream->print("[%s+0x%x]", spname, offset); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2855 } else { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2856 stream->print("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
|
2857 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2858 stream->print(" "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2859 stream->move_to(tab2); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2860 stream->print("= "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2861 if (at_this) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2862 m->method_holder()->print_value_on(stream); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2863 } else { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2864 bool did_name = false; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2865 if (!at_this && ss.is_object()) { |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2142
diff
changeset
|
2866 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
|
2867 if (name != NULL) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2868 name->print_value_on(stream); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2869 did_name = true; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2870 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2871 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2872 if (!did_name) |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2873 stream->print("%s", type2name(t)); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2874 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2875 if (at_old_sp) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2876 stream->print(" (%s of caller)", spname); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2877 did_old_sp = true; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2878 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2879 stream->cr(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2880 sig_index += type2size[t]; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2881 arg_index += 1; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2882 if (!at_this) ss.next(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2883 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2884 if (!did_old_sp) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2885 stream->print(" # "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2886 stream->move_to(tab1); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2887 stream->print("[%s+0x%x]", spname, stack_slot_offset); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2888 stream->print(" (%s of caller)", spname); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2889 stream->cr(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2890 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2891 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2892 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2893 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2894 |
0 | 2895 void nmethod::print_code_comment_on(outputStream* st, int column, u_char* begin, u_char* end) { |
2896 // First, find an oopmap in (begin, end]. | |
2897 // We use the odd half-closed interval so that oop maps and scope descs | |
2898 // which are tied to the byte after a call are printed with the call itself. | |
1748 | 2899 address base = code_begin(); |
0 | 2900 OopMapSet* oms = oop_maps(); |
2901 if (oms != NULL) { | |
2902 for (int i = 0, imax = oms->size(); i < imax; i++) { | |
2903 OopMap* om = oms->at(i); | |
2904 address pc = base + om->offset(); | |
2905 if (pc > begin) { | |
2906 if (pc <= end) { | |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2907 st->move_to(column); |
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2908 st->print("; "); |
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2909 om->print_on(st); |
0 | 2910 } |
2911 break; | |
2912 } | |
2913 } | |
2914 } | |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2915 |
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2916 // Print any debug info present at this pc. |
0 | 2917 ScopeDesc* sd = scope_desc_in(begin, end); |
2918 if (sd != NULL) { | |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2919 st->move_to(column); |
0 | 2920 if (sd->bci() == SynchronizationEntryBCI) { |
2921 st->print(";*synchronization entry"); | |
2922 } else { | |
6725
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2923 if (sd->method() == NULL) { |
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2924 st->print("method is NULL"); |
0 | 2925 } else if (sd->method()->is_native()) { |
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2926 st->print("method is native"); |
0 | 2927 } else { |
2142 | 2928 Bytecodes::Code bc = sd->method()->java_code_at(sd->bci()); |
0 | 2929 st->print(";*%s", Bytecodes::name(bc)); |
2930 switch (bc) { | |
2931 case Bytecodes::_invokevirtual: | |
2932 case Bytecodes::_invokespecial: | |
2933 case Bytecodes::_invokestatic: | |
2934 case Bytecodes::_invokeinterface: | |
2935 { | |
2142 | 2936 Bytecode_invoke invoke(sd->method(), sd->bci()); |
0 | 2937 st->print(" "); |
2142 | 2938 if (invoke.name() != NULL) |
2939 invoke.name()->print_symbol_on(st); | |
0 | 2940 else |
2941 st->print("<UNKNOWN>"); | |
2942 break; | |
2943 } | |
2944 case Bytecodes::_getfield: | |
2945 case Bytecodes::_putfield: | |
2946 case Bytecodes::_getstatic: | |
2947 case Bytecodes::_putstatic: | |
2948 { | |
2142 | 2949 Bytecode_field field(sd->method(), sd->bci()); |
0 | 2950 st->print(" "); |
2142 | 2951 if (field.name() != NULL) |
2952 field.name()->print_symbol_on(st); | |
0 | 2953 else |
2954 st->print("<UNKNOWN>"); | |
2955 } | |
2956 } | |
2957 } | |
2958 } | |
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2959 |
0 | 2960 // Print all scopes |
2961 for (;sd != NULL; sd = sd->sender()) { | |
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2962 st->move_to(column); |
0 | 2963 st->print("; -"); |
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2964 if (sd->method() == NULL) { |
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2965 st->print("method is NULL"); |
0 | 2966 } else { |
2967 sd->method()->print_short_name(st); | |
2968 } | |
2969 int lineno = sd->method()->line_number_from_bci(sd->bci()); | |
2970 if (lineno != -1) { | |
2971 st->print("@%d (line %d)", sd->bci(), lineno); | |
2972 } else { | |
2973 st->print("@%d", sd->bci()); | |
2974 } | |
2975 st->cr(); | |
2976 } | |
2977 } | |
2978 | |
2979 // Print relocation information | |
2980 const char* str = reloc_string_for(begin, end); | |
2981 if (str != NULL) { | |
2982 if (sd != NULL) st->cr(); | |
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2983 st->move_to(column); |
0 | 2984 st->print("; {%s}", str); |
2985 } | |
1748 | 2986 int cont_offset = ImplicitExceptionTable(this).at(begin - code_begin()); |
0 | 2987 if (cont_offset != 0) { |
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2988 st->move_to(column); |
1748 | 2989 st->print("; implicit exception: dispatches to " INTPTR_FORMAT, code_begin() + cont_offset); |
0 | 2990 } |
2991 | |
2992 } | |
2993 | |
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2994 #ifndef PRODUCT |
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2995 |
0 | 2996 void nmethod::print_value_on(outputStream* st) const { |
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2997 st->print("nmethod"); |
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2998 print_on(st, NULL); |
0 | 2999 } |
3000 | |
3001 void nmethod::print_calls(outputStream* st) { | |
3002 RelocIterator iter(this); | |
3003 while (iter.next()) { | |
3004 switch (iter.type()) { | |
3005 case relocInfo::virtual_call_type: | |
3006 case relocInfo::opt_virtual_call_type: { | |
3007 VerifyMutexLocker mc(CompiledIC_lock); | |
3008 CompiledIC_at(iter.reloc())->print(); | |
3009 break; | |
3010 } | |
3011 case relocInfo::static_call_type: | |
3012 st->print_cr("Static call at " INTPTR_FORMAT, iter.reloc()->addr()); | |
3013 compiledStaticCall_at(iter.reloc())->print(); | |
3014 break; | |
3015 } | |
3016 } | |
3017 } | |
3018 | |
3019 void nmethod::print_handler_table() { | |
3020 ExceptionHandlerTable(this).print(); | |
3021 } | |
3022 | |
3023 void nmethod::print_nul_chk_table() { | |
1748 | 3024 ImplicitExceptionTable(this).print(code_begin()); |
0 | 3025 } |
3026 | |
9707 | 3027 #endif // PRODUCT |
3028 | |
0 | 3029 void nmethod::print_statistics() { |
3030 ttyLocker ttyl; | |
3031 if (xtty != NULL) xtty->head("statistics type='nmethod'"); | |
3032 nmethod_stats.print_native_nmethod_stats(); | |
3033 nmethod_stats.print_nmethod_stats(); | |
3034 DebugInformationRecorder::print_statistics(); | |
3035 nmethod_stats.print_pc_stats(); | |
3036 Dependencies::print_statistics(); | |
3037 if (xtty != NULL) xtty->tail("statistics"); | |
3038 } |