Mercurial > hg > truffle
annotate src/share/vm/code/nmethod.cpp @ 4279:cdcd26f86af5
Helper class for slow paths
author | Christian Wimmer <Christian.Wimmer@Oracle.com> |
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date | Thu, 12 Jan 2012 13:46:26 -0800 |
parents | 04b9a2566eec |
children | 125678ef7587 |
rev | line source |
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0 | 1 /* |
2142 | 2 * Copyright (c) 1997, 2011, 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" | |
37 #include "oops/methodDataOop.hpp" | |
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 | |
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48 #ifdef GRAAL |
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49 #include "graal/graalJavaAccess.hpp" |
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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 { \ | |
65 methodOop m = (method); \ | |
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 { \ | |
79 methodOop m = (method); \ | |
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 } | |
103 bool nmethod::is_compiled_by_c2() const { | |
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104 if (compiler() == NULL || method() == NULL) return false; // can happen during debug printing |
0 | 105 if (is_native_method()) return false; |
106 return compiler()->is_c2(); | |
107 } | |
1692 | 108 bool nmethod::is_compiled_by_shark() const { |
109 if (is_native_method()) return false; | |
110 assert(compiler() != NULL, "must be"); | |
111 return compiler()->is_shark(); | |
112 } | |
0 | 113 |
114 | |
115 | |
116 //--------------------------------------------------------------------------------- | |
117 // NMethod statistics | |
118 // They are printed under various flags, including: | |
119 // PrintC1Statistics, PrintOptoStatistics, LogVMOutput, and LogCompilation. | |
120 // (In the latter two cases, they like other stats are printed to the log only.) | |
121 | |
122 #ifndef PRODUCT | |
123 // These variables are put into one block to reduce relocations | |
124 // and make it simpler to print from the debugger. | |
125 static | |
126 struct nmethod_stats_struct { | |
127 int nmethod_count; | |
128 int total_size; | |
129 int relocation_size; | |
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130 int consts_size; |
1748 | 131 int insts_size; |
0 | 132 int stub_size; |
133 int scopes_data_size; | |
134 int scopes_pcs_size; | |
135 int dependencies_size; | |
136 int handler_table_size; | |
137 int nul_chk_table_size; | |
138 int oops_size; | |
139 | |
140 void note_nmethod(nmethod* nm) { | |
141 nmethod_count += 1; | |
142 total_size += nm->size(); | |
143 relocation_size += nm->relocation_size(); | |
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144 consts_size += nm->consts_size(); |
1748 | 145 insts_size += nm->insts_size(); |
0 | 146 stub_size += nm->stub_size(); |
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147 oops_size += nm->oops_size(); |
0 | 148 scopes_data_size += nm->scopes_data_size(); |
149 scopes_pcs_size += nm->scopes_pcs_size(); | |
150 dependencies_size += nm->dependencies_size(); | |
151 handler_table_size += nm->handler_table_size(); | |
152 nul_chk_table_size += nm->nul_chk_table_size(); | |
153 } | |
154 void print_nmethod_stats() { | |
155 if (nmethod_count == 0) return; | |
156 tty->print_cr("Statistics for %d bytecoded nmethods:", nmethod_count); | |
157 if (total_size != 0) tty->print_cr(" total in heap = %d", total_size); | |
158 if (relocation_size != 0) tty->print_cr(" relocation = %d", relocation_size); | |
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159 if (consts_size != 0) tty->print_cr(" constants = %d", consts_size); |
1748 | 160 if (insts_size != 0) tty->print_cr(" main code = %d", insts_size); |
0 | 161 if (stub_size != 0) tty->print_cr(" stub code = %d", stub_size); |
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162 if (oops_size != 0) tty->print_cr(" oops = %d", oops_size); |
0 | 163 if (scopes_data_size != 0) tty->print_cr(" scopes data = %d", scopes_data_size); |
164 if (scopes_pcs_size != 0) tty->print_cr(" scopes pcs = %d", scopes_pcs_size); | |
165 if (dependencies_size != 0) tty->print_cr(" dependencies = %d", dependencies_size); | |
166 if (handler_table_size != 0) tty->print_cr(" handler table = %d", handler_table_size); | |
167 if (nul_chk_table_size != 0) tty->print_cr(" nul chk table = %d", nul_chk_table_size); | |
168 } | |
169 | |
170 int native_nmethod_count; | |
171 int native_total_size; | |
172 int native_relocation_size; | |
1748 | 173 int native_insts_size; |
0 | 174 int native_oops_size; |
175 void note_native_nmethod(nmethod* nm) { | |
176 native_nmethod_count += 1; | |
177 native_total_size += nm->size(); | |
178 native_relocation_size += nm->relocation_size(); | |
1748 | 179 native_insts_size += nm->insts_size(); |
0 | 180 native_oops_size += nm->oops_size(); |
181 } | |
182 void print_native_nmethod_stats() { | |
183 if (native_nmethod_count == 0) return; | |
184 tty->print_cr("Statistics for %d native nmethods:", native_nmethod_count); | |
185 if (native_total_size != 0) tty->print_cr(" N. total size = %d", native_total_size); | |
186 if (native_relocation_size != 0) tty->print_cr(" N. relocation = %d", native_relocation_size); | |
1748 | 187 if (native_insts_size != 0) tty->print_cr(" N. main code = %d", native_insts_size); |
0 | 188 if (native_oops_size != 0) tty->print_cr(" N. oops = %d", native_oops_size); |
189 } | |
190 | |
191 int pc_desc_resets; // number of resets (= number of caches) | |
192 int pc_desc_queries; // queries to nmethod::find_pc_desc | |
193 int pc_desc_approx; // number of those which have approximate true | |
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194 int pc_desc_repeats; // number of _pc_descs[0] hits |
0 | 195 int pc_desc_hits; // number of LRU cache hits |
196 int pc_desc_tests; // total number of PcDesc examinations | |
197 int pc_desc_searches; // total number of quasi-binary search steps | |
198 int pc_desc_adds; // number of LUR cache insertions | |
199 | |
200 void print_pc_stats() { | |
201 tty->print_cr("PcDesc Statistics: %d queries, %.2f comparisons per query", | |
202 pc_desc_queries, | |
203 (double)(pc_desc_tests + pc_desc_searches) | |
204 / pc_desc_queries); | |
205 tty->print_cr(" caches=%d queries=%d/%d, hits=%d+%d, tests=%d+%d, adds=%d", | |
206 pc_desc_resets, | |
207 pc_desc_queries, pc_desc_approx, | |
208 pc_desc_repeats, pc_desc_hits, | |
209 pc_desc_tests, pc_desc_searches, pc_desc_adds); | |
210 } | |
211 } nmethod_stats; | |
212 #endif //PRODUCT | |
213 | |
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214 |
0 | 215 //--------------------------------------------------------------------------------- |
216 | |
217 | |
218 ExceptionCache::ExceptionCache(Handle exception, address pc, address handler) { | |
219 assert(pc != NULL, "Must be non null"); | |
220 assert(exception.not_null(), "Must be non null"); | |
221 assert(handler != NULL, "Must be non null"); | |
222 | |
223 _count = 0; | |
224 _exception_type = exception->klass(); | |
225 _next = NULL; | |
226 | |
227 add_address_and_handler(pc,handler); | |
228 } | |
229 | |
230 | |
231 address ExceptionCache::match(Handle exception, address pc) { | |
232 assert(pc != NULL,"Must be non null"); | |
233 assert(exception.not_null(),"Must be non null"); | |
234 if (exception->klass() == exception_type()) { | |
235 return (test_address(pc)); | |
236 } | |
237 | |
238 return NULL; | |
239 } | |
240 | |
241 | |
242 bool ExceptionCache::match_exception_with_space(Handle exception) { | |
243 assert(exception.not_null(),"Must be non null"); | |
244 if (exception->klass() == exception_type() && count() < cache_size) { | |
245 return true; | |
246 } | |
247 return false; | |
248 } | |
249 | |
250 | |
251 address ExceptionCache::test_address(address addr) { | |
252 for (int i=0; i<count(); i++) { | |
253 if (pc_at(i) == addr) { | |
254 return handler_at(i); | |
255 } | |
256 } | |
257 return NULL; | |
258 } | |
259 | |
260 | |
261 bool ExceptionCache::add_address_and_handler(address addr, address handler) { | |
262 if (test_address(addr) == handler) return true; | |
263 if (count() < cache_size) { | |
264 set_pc_at(count(),addr); | |
265 set_handler_at(count(), handler); | |
266 increment_count(); | |
267 return true; | |
268 } | |
269 return false; | |
270 } | |
271 | |
272 | |
273 // private method for handling exception cache | |
274 // These methods are private, and used to manipulate the exception cache | |
275 // directly. | |
276 ExceptionCache* nmethod::exception_cache_entry_for_exception(Handle exception) { | |
277 ExceptionCache* ec = exception_cache(); | |
278 while (ec != NULL) { | |
279 if (ec->match_exception_with_space(exception)) { | |
280 return ec; | |
281 } | |
282 ec = ec->next(); | |
283 } | |
284 return NULL; | |
285 } | |
286 | |
287 | |
288 //----------------------------------------------------------------------------- | |
289 | |
290 | |
291 // Helper used by both find_pc_desc methods. | |
292 static inline bool match_desc(PcDesc* pc, int pc_offset, bool approximate) { | |
293 NOT_PRODUCT(++nmethod_stats.pc_desc_tests); | |
294 if (!approximate) | |
295 return pc->pc_offset() == pc_offset; | |
296 else | |
297 return (pc-1)->pc_offset() < pc_offset && pc_offset <= pc->pc_offset(); | |
298 } | |
299 | |
300 void PcDescCache::reset_to(PcDesc* initial_pc_desc) { | |
301 if (initial_pc_desc == NULL) { | |
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302 _pc_descs[0] = NULL; // native method; no PcDescs at all |
0 | 303 return; |
304 } | |
305 NOT_PRODUCT(++nmethod_stats.pc_desc_resets); | |
306 // reset the cache by filling it with benign (non-null) values | |
307 assert(initial_pc_desc->pc_offset() < 0, "must be sentinel"); | |
308 for (int i = 0; i < cache_size; i++) | |
309 _pc_descs[i] = initial_pc_desc; | |
310 } | |
311 | |
312 PcDesc* PcDescCache::find_pc_desc(int pc_offset, bool approximate) { | |
313 NOT_PRODUCT(++nmethod_stats.pc_desc_queries); | |
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314 NOT_PRODUCT(if (approximate) ++nmethod_stats.pc_desc_approx); |
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315 |
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316 // Note: one might think that caching the most recently |
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317 // read value separately would be a win, but one would be |
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318 // wrong. When many threads are updating it, the cache |
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319 // line it's in would bounce between caches, negating |
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320 // any benefit. |
0 | 321 |
322 // In order to prevent race conditions do not load cache elements | |
323 // repeatedly, but use a local copy: | |
324 PcDesc* res; | |
325 | |
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326 // Step one: Check the most recently added value. |
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327 res = _pc_descs[0]; |
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328 if (res == NULL) return NULL; // native method; no PcDescs at all |
0 | 329 if (match_desc(res, pc_offset, approximate)) { |
330 NOT_PRODUCT(++nmethod_stats.pc_desc_repeats); | |
331 return res; | |
332 } | |
333 | |
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334 // Step two: Check the rest of the LRU cache. |
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335 for (int i = 1; i < cache_size; ++i) { |
0 | 336 res = _pc_descs[i]; |
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337 if (res->pc_offset() < 0) break; // optimization: skip empty cache |
0 | 338 if (match_desc(res, pc_offset, approximate)) { |
339 NOT_PRODUCT(++nmethod_stats.pc_desc_hits); | |
340 return res; | |
341 } | |
342 } | |
343 | |
344 // Report failure. | |
345 return NULL; | |
346 } | |
347 | |
348 void PcDescCache::add_pc_desc(PcDesc* pc_desc) { | |
349 NOT_PRODUCT(++nmethod_stats.pc_desc_adds); | |
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350 // Update the LRU cache by shifting pc_desc forward. |
0 | 351 for (int i = 0; i < cache_size; i++) { |
352 PcDesc* next = _pc_descs[i]; | |
353 _pc_descs[i] = pc_desc; | |
354 pc_desc = next; | |
355 } | |
356 } | |
357 | |
358 // adjust pcs_size so that it is a multiple of both oopSize and | |
359 // sizeof(PcDesc) (assumes that if sizeof(PcDesc) is not a multiple | |
360 // of oopSize, then 2*sizeof(PcDesc) is) | |
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361 static int adjust_pcs_size(int pcs_size) { |
0 | 362 int nsize = round_to(pcs_size, oopSize); |
363 if ((nsize % sizeof(PcDesc)) != 0) { | |
364 nsize = pcs_size + sizeof(PcDesc); | |
365 } | |
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366 assert((nsize % oopSize) == 0, "correct alignment"); |
0 | 367 return nsize; |
368 } | |
369 | |
370 //----------------------------------------------------------------------------- | |
371 | |
372 | |
373 void nmethod::add_exception_cache_entry(ExceptionCache* new_entry) { | |
374 assert(ExceptionCache_lock->owned_by_self(),"Must hold the ExceptionCache_lock"); | |
375 assert(new_entry != NULL,"Must be non null"); | |
376 assert(new_entry->next() == NULL, "Must be null"); | |
377 | |
378 if (exception_cache() != NULL) { | |
379 new_entry->set_next(exception_cache()); | |
380 } | |
381 set_exception_cache(new_entry); | |
382 } | |
383 | |
384 void nmethod::remove_from_exception_cache(ExceptionCache* ec) { | |
385 ExceptionCache* prev = NULL; | |
386 ExceptionCache* curr = exception_cache(); | |
387 assert(curr != NULL, "nothing to remove"); | |
388 // find the previous and next entry of ec | |
389 while (curr != ec) { | |
390 prev = curr; | |
391 curr = curr->next(); | |
392 assert(curr != NULL, "ExceptionCache not found"); | |
393 } | |
394 // now: curr == ec | |
395 ExceptionCache* next = curr->next(); | |
396 if (prev == NULL) { | |
397 set_exception_cache(next); | |
398 } else { | |
399 prev->set_next(next); | |
400 } | |
401 delete curr; | |
402 } | |
403 | |
404 | |
405 // public method for accessing the exception cache | |
406 // These are the public access methods. | |
407 address nmethod::handler_for_exception_and_pc(Handle exception, address pc) { | |
408 // We never grab a lock to read the exception cache, so we may | |
409 // have false negatives. This is okay, as it can only happen during | |
410 // the first few exception lookups for a given nmethod. | |
411 ExceptionCache* ec = exception_cache(); | |
412 while (ec != NULL) { | |
413 address ret_val; | |
414 if ((ret_val = ec->match(exception,pc)) != NULL) { | |
415 return ret_val; | |
416 } | |
417 ec = ec->next(); | |
418 } | |
419 return NULL; | |
420 } | |
421 | |
422 | |
423 void nmethod::add_handler_for_exception_and_pc(Handle exception, address pc, address handler) { | |
424 // There are potential race conditions during exception cache updates, so we | |
425 // must own the ExceptionCache_lock before doing ANY modifications. Because | |
605 | 426 // we don't lock during reads, it is possible to have several threads attempt |
0 | 427 // to update the cache with the same data. We need to check for already inserted |
428 // copies of the current data before adding it. | |
429 | |
430 MutexLocker ml(ExceptionCache_lock); | |
431 ExceptionCache* target_entry = exception_cache_entry_for_exception(exception); | |
432 | |
433 if (target_entry == NULL || !target_entry->add_address_and_handler(pc,handler)) { | |
434 target_entry = new ExceptionCache(exception,pc,handler); | |
435 add_exception_cache_entry(target_entry); | |
436 } | |
437 } | |
438 | |
439 | |
440 //-------------end of code for ExceptionCache-------------- | |
441 | |
442 | |
443 int nmethod::total_size() const { | |
444 return | |
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445 consts_size() + |
1748 | 446 insts_size() + |
0 | 447 stub_size() + |
448 scopes_data_size() + | |
449 scopes_pcs_size() + | |
450 handler_table_size() + | |
451 nul_chk_table_size(); | |
452 } | |
453 | |
454 const char* nmethod::compile_kind() const { | |
455 if (is_osr_method()) return "osr"; | |
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456 if (method() != NULL && is_native_method()) return "c2n"; |
0 | 457 return NULL; |
458 } | |
459 | |
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460 // Fill in default values for various flag fields |
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461 void nmethod::init_defaults() { |
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462 _state = alive; |
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463 _marked_for_reclamation = 0; |
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464 _has_flushed_dependencies = 0; |
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465 _speculatively_disconnected = 0; |
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466 _has_unsafe_access = 0; |
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467 _has_method_handle_invokes = 0; |
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468 _marked_for_deoptimization = 0; |
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469 _lock_count = 0; |
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470 _stack_traversal_mark = 0; |
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471 _unload_reported = false; // jvmti state |
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472 |
1726 | 473 #ifdef ASSERT |
474 _oops_are_stale = false; | |
475 #endif | |
476 | |
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477 _oops_do_mark_link = NULL; |
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478 _jmethod_id = NULL; |
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479 _osr_link = NULL; |
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480 _scavenge_root_link = NULL; |
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481 _scavenge_root_state = 0; |
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482 _saved_nmethod_link = NULL; |
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483 _compiler = NULL; |
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484 |
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485 _graal_compiled_method = NULL; |
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486 |
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487 #ifdef HAVE_DTRACE_H |
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488 _trap_offset = 0; |
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489 #endif // def HAVE_DTRACE_H |
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490 } |
0 | 491 |
492 | |
493 nmethod* nmethod::new_native_nmethod(methodHandle method, | |
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494 int compile_id, |
0 | 495 CodeBuffer *code_buffer, |
496 int vep_offset, | |
497 int frame_complete, | |
498 int frame_size, | |
499 ByteSize basic_lock_owner_sp_offset, | |
500 ByteSize basic_lock_sp_offset, | |
501 OopMapSet* oop_maps) { | |
502 // create nmethod | |
503 nmethod* nm = NULL; | |
504 { | |
505 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
506 int native_nmethod_size = allocation_size(code_buffer, sizeof(nmethod)); | |
507 CodeOffsets offsets; | |
508 offsets.set_value(CodeOffsets::Verified_Entry, vep_offset); | |
509 offsets.set_value(CodeOffsets::Frame_Complete, frame_complete); | |
510 nm = new (native_nmethod_size) | |
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511 nmethod(method(), native_nmethod_size, compile_id, &offsets, |
0 | 512 code_buffer, frame_size, |
513 basic_lock_owner_sp_offset, basic_lock_sp_offset, | |
514 oop_maps); | |
515 NOT_PRODUCT(if (nm != NULL) nmethod_stats.note_native_nmethod(nm)); | |
516 if (PrintAssembly && nm != NULL) | |
517 Disassembler::decode(nm); | |
518 } | |
519 // verify nmethod | |
520 debug_only(if (nm) nm->verify();) // might block | |
521 | |
522 if (nm != NULL) { | |
523 nm->log_new_nmethod(); | |
524 } | |
525 | |
526 return nm; | |
527 } | |
528 | |
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529 #ifdef HAVE_DTRACE_H |
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530 nmethod* nmethod::new_dtrace_nmethod(methodHandle method, |
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531 CodeBuffer *code_buffer, |
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532 int vep_offset, |
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533 int trap_offset, |
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534 int frame_complete, |
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535 int frame_size) { |
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536 // create nmethod |
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537 nmethod* nm = NULL; |
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538 { |
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539 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
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540 int nmethod_size = allocation_size(code_buffer, sizeof(nmethod)); |
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541 CodeOffsets offsets; |
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542 offsets.set_value(CodeOffsets::Verified_Entry, vep_offset); |
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543 offsets.set_value(CodeOffsets::Dtrace_trap, trap_offset); |
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544 offsets.set_value(CodeOffsets::Frame_Complete, frame_complete); |
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545 |
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546 nm = new (nmethod_size) nmethod(method(), nmethod_size, &offsets, code_buffer, frame_size); |
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547 |
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548 NOT_PRODUCT(if (nm != NULL) nmethod_stats.note_nmethod(nm)); |
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549 if (PrintAssembly && nm != NULL) |
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550 Disassembler::decode(nm); |
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551 } |
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552 // verify nmethod |
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553 debug_only(if (nm) nm->verify();) // might block |
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554 |
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555 if (nm != NULL) { |
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556 nm->log_new_nmethod(); |
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557 } |
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558 |
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559 return nm; |
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560 } |
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561 |
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562 #endif // def HAVE_DTRACE_H |
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563 |
0 | 564 nmethod* nmethod::new_nmethod(methodHandle method, |
565 int compile_id, | |
566 int entry_bci, | |
567 CodeOffsets* offsets, | |
568 int orig_pc_offset, | |
569 DebugInformationRecorder* debug_info, | |
570 Dependencies* dependencies, | |
571 CodeBuffer* code_buffer, int frame_size, | |
572 OopMapSet* oop_maps, | |
573 ExceptionHandlerTable* handler_table, | |
574 ImplicitExceptionTable* nul_chk_table, | |
575 AbstractCompiler* compiler, | |
576 int comp_level | |
577 ) | |
578 { | |
579 assert(debug_info->oop_recorder() == code_buffer->oop_recorder(), "shared OR"); | |
580 // create nmethod | |
581 nmethod* nm = NULL; | |
582 { MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
583 int nmethod_size = | |
584 allocation_size(code_buffer, sizeof(nmethod)) | |
585 + adjust_pcs_size(debug_info->pcs_size()) | |
586 + round_to(dependencies->size_in_bytes() , oopSize) | |
587 + round_to(handler_table->size_in_bytes(), oopSize) | |
588 + round_to(nul_chk_table->size_in_bytes(), oopSize) | |
589 + round_to(debug_info->data_size() , oopSize); | |
590 nm = new (nmethod_size) | |
591 nmethod(method(), nmethod_size, compile_id, entry_bci, offsets, | |
592 orig_pc_offset, debug_info, dependencies, code_buffer, frame_size, | |
593 oop_maps, | |
594 handler_table, | |
595 nul_chk_table, | |
596 compiler, | |
597 comp_level); | |
598 if (nm != NULL) { | |
599 // To make dependency checking during class loading fast, record | |
600 // the nmethod dependencies in the classes it is dependent on. | |
601 // This allows the dependency checking code to simply walk the | |
602 // class hierarchy above the loaded class, checking only nmethods | |
603 // which are dependent on those classes. The slow way is to | |
604 // check every nmethod for dependencies which makes it linear in | |
605 // the number of methods compiled. For applications with a lot | |
606 // classes the slow way is too slow. | |
607 for (Dependencies::DepStream deps(nm); deps.next(); ) { | |
608 klassOop klass = deps.context_type(); | |
609 if (klass == NULL) continue; // ignore things like evol_method | |
610 | |
611 // record this nmethod as dependent on this klass | |
612 instanceKlass::cast(klass)->add_dependent_nmethod(nm); | |
613 } | |
614 } | |
615 NOT_PRODUCT(if (nm != NULL) nmethod_stats.note_nmethod(nm)); | |
616 if (PrintAssembly && nm != NULL) | |
617 Disassembler::decode(nm); | |
618 } | |
619 | |
620 // verify nmethod | |
621 debug_only(if (nm) nm->verify();) // might block | |
622 | |
623 if (nm != NULL) { | |
624 nm->log_new_nmethod(); | |
625 } | |
626 | |
627 // done | |
628 return nm; | |
629 } | |
630 | |
631 | |
632 // For native wrappers | |
633 nmethod::nmethod( | |
634 methodOop method, | |
635 int nmethod_size, | |
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636 int compile_id, |
0 | 637 CodeOffsets* offsets, |
638 CodeBuffer* code_buffer, | |
639 int frame_size, | |
640 ByteSize basic_lock_owner_sp_offset, | |
641 ByteSize basic_lock_sp_offset, | |
642 OopMapSet* oop_maps ) | |
643 : CodeBlob("native nmethod", code_buffer, sizeof(nmethod), | |
644 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, oop_maps), | |
2019 | 645 _native_receiver_sp_offset(basic_lock_owner_sp_offset), |
646 _native_basic_lock_sp_offset(basic_lock_sp_offset) | |
0 | 647 { |
648 { | |
649 debug_only(No_Safepoint_Verifier nsv;) | |
650 assert_locked_or_safepoint(CodeCache_lock); | |
651 | |
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652 init_defaults(); |
0 | 653 _method = method; |
654 _entry_bci = InvocationEntryBci; | |
655 // We have no exception handler or deopt handler make the | |
656 // values something that will never match a pc like the nmethod vtable entry | |
657 _exception_offset = 0; | |
658 _deoptimize_offset = 0; | |
1204 | 659 _deoptimize_mh_offset = 0; |
0 | 660 _orig_pc_offset = 0; |
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661 |
1748 | 662 _consts_offset = data_offset(); |
0 | 663 _stub_offset = data_offset(); |
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664 _oops_offset = data_offset(); |
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665 _scopes_data_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
0 | 666 _scopes_pcs_offset = _scopes_data_offset; |
667 _dependencies_offset = _scopes_pcs_offset; | |
668 _handler_table_offset = _dependencies_offset; | |
669 _nul_chk_table_offset = _handler_table_offset; | |
670 _nmethod_end_offset = _nul_chk_table_offset; | |
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671 _compile_id = compile_id; |
0 | 672 _comp_level = CompLevel_none; |
1748 | 673 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
674 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
0 | 675 _osr_entry_point = NULL; |
676 _exception_cache = NULL; | |
677 _pc_desc_cache.reset_to(NULL); | |
678 | |
679 code_buffer->copy_oops_to(this); | |
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680 if (ScavengeRootsInCode && detect_scavenge_root_oops()) { |
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681 CodeCache::add_scavenge_root_nmethod(this); |
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682 } |
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683 debug_only(verify_scavenge_root_oops()); |
0 | 684 CodeCache::commit(this); |
685 } | |
686 | |
687 if (PrintNativeNMethods || PrintDebugInfo || PrintRelocations || PrintDependencies) { | |
688 ttyLocker ttyl; // keep the following output all in one block | |
689 // This output goes directly to the tty, not the compiler log. | |
690 // To enable tools to match it up with the compilation activity, | |
691 // be sure to tag this tty output with the compile ID. | |
692 if (xtty != NULL) { | |
693 xtty->begin_head("print_native_nmethod"); | |
694 xtty->method(_method); | |
695 xtty->stamp(); | |
696 xtty->end_head(" address='" INTPTR_FORMAT "'", (intptr_t) this); | |
697 } | |
698 // print the header part first | |
699 print(); | |
700 // then print the requested information | |
701 if (PrintNativeNMethods) { | |
702 print_code(); | |
703 oop_maps->print(); | |
704 } | |
705 if (PrintRelocations) { | |
706 print_relocations(); | |
707 } | |
708 if (xtty != NULL) { | |
709 xtty->tail("print_native_nmethod"); | |
710 } | |
711 } | |
712 Events::log("Create nmethod " INTPTR_FORMAT, this); | |
713 } | |
714 | |
116
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715 // For dtrace wrappers |
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716 #ifdef HAVE_DTRACE_H |
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717 nmethod::nmethod( |
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718 methodOop method, |
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719 int nmethod_size, |
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720 CodeOffsets* offsets, |
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721 CodeBuffer* code_buffer, |
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722 int frame_size) |
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723 : CodeBlob("dtrace nmethod", code_buffer, sizeof(nmethod), |
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724 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, NULL), |
2019 | 725 _native_receiver_sp_offset(in_ByteSize(-1)), |
726 _native_basic_lock_sp_offset(in_ByteSize(-1)) | |
116
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727 { |
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728 { |
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729 debug_only(No_Safepoint_Verifier nsv;) |
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730 assert_locked_or_safepoint(CodeCache_lock); |
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731 |
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732 init_defaults(); |
116
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733 _method = method; |
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734 _entry_bci = InvocationEntryBci; |
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735 // We have no exception handler or deopt handler make the |
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736 // values something that will never match a pc like the nmethod vtable entry |
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737 _exception_offset = 0; |
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738 _deoptimize_offset = 0; |
1204 | 739 _deoptimize_mh_offset = 0; |
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740 _unwind_handler_offset = -1; |
116
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741 _trap_offset = offsets->value(CodeOffsets::Dtrace_trap); |
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742 _orig_pc_offset = 0; |
1748 | 743 _consts_offset = data_offset(); |
116
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744 _stub_offset = data_offset(); |
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745 _oops_offset = data_offset(); |
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746 _scopes_data_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
116
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747 _scopes_pcs_offset = _scopes_data_offset; |
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748 _dependencies_offset = _scopes_pcs_offset; |
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749 _handler_table_offset = _dependencies_offset; |
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750 _nul_chk_table_offset = _handler_table_offset; |
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751 _nmethod_end_offset = _nul_chk_table_offset; |
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752 _compile_id = 0; // default |
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753 _comp_level = CompLevel_none; |
1748 | 754 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
755 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
116
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756 _osr_entry_point = NULL; |
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757 _exception_cache = NULL; |
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758 _pc_desc_cache.reset_to(NULL); |
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759 |
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760 code_buffer->copy_oops_to(this); |
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761 debug_only(verify_scavenge_root_oops()); |
116
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762 CodeCache::commit(this); |
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763 } |
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764 |
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765 if (PrintNMethods || PrintDebugInfo || PrintRelocations || PrintDependencies) { |
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766 ttyLocker ttyl; // keep the following output all in one block |
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767 // This output goes directly to the tty, not the compiler log. |
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768 // To enable tools to match it up with the compilation activity, |
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769 // be sure to tag this tty output with the compile ID. |
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770 if (xtty != NULL) { |
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771 xtty->begin_head("print_dtrace_nmethod"); |
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772 xtty->method(_method); |
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773 xtty->stamp(); |
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774 xtty->end_head(" address='" INTPTR_FORMAT "'", (intptr_t) this); |
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775 } |
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776 // print the header part first |
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777 print(); |
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778 // then print the requested information |
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779 if (PrintNMethods) { |
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780 print_code(); |
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781 } |
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782 if (PrintRelocations) { |
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783 print_relocations(); |
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784 } |
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785 if (xtty != NULL) { |
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786 xtty->tail("print_dtrace_nmethod"); |
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787 } |
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788 } |
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789 Events::log("Create nmethod " INTPTR_FORMAT, this); |
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790 } |
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791 #endif // def HAVE_DTRACE_H |
0 | 792 |
793 void* nmethod::operator new(size_t size, int nmethod_size) { | |
794 // Always leave some room in the CodeCache for I2C/C2I adapters | |
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795 if (CodeCache::largest_free_block() < CodeCacheMinimumFreeSpace) return NULL; |
0 | 796 return CodeCache::allocate(nmethod_size); |
797 } | |
798 | |
799 | |
800 nmethod::nmethod( | |
801 methodOop method, | |
802 int nmethod_size, | |
803 int compile_id, | |
804 int entry_bci, | |
805 CodeOffsets* offsets, | |
806 int orig_pc_offset, | |
807 DebugInformationRecorder* debug_info, | |
808 Dependencies* dependencies, | |
809 CodeBuffer *code_buffer, | |
810 int frame_size, | |
811 OopMapSet* oop_maps, | |
812 ExceptionHandlerTable* handler_table, | |
813 ImplicitExceptionTable* nul_chk_table, | |
814 AbstractCompiler* compiler, | |
815 int comp_level | |
816 ) | |
817 : CodeBlob("nmethod", code_buffer, sizeof(nmethod), | |
818 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, oop_maps), | |
2019 | 819 _native_receiver_sp_offset(in_ByteSize(-1)), |
820 _native_basic_lock_sp_offset(in_ByteSize(-1)) | |
0 | 821 { |
822 assert(debug_info->oop_recorder() == code_buffer->oop_recorder(), "shared OR"); | |
823 { | |
824 debug_only(No_Safepoint_Verifier nsv;) | |
825 assert_locked_or_safepoint(CodeCache_lock); | |
826 | |
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827 init_defaults(); |
0 | 828 _method = method; |
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829 _entry_bci = entry_bci; |
0 | 830 _compile_id = compile_id; |
831 _comp_level = comp_level; | |
832 _compiler = compiler; | |
833 _orig_pc_offset = orig_pc_offset; | |
1748 | 834 |
835 // Section offsets | |
1762
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836 _consts_offset = content_offset() + code_buffer->total_offset_of(code_buffer->consts()); |
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837 _stub_offset = content_offset() + code_buffer->total_offset_of(code_buffer->stubs()); |
0 | 838 |
839 // Exception handler and deopt handler are in the stub section | |
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840 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must be set"); |
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841 assert(offsets->value(CodeOffsets::Deopt ) != -1, "must be set"); |
2891
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842 if (UseGraal) { |
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843 // graal produces no (!) stub section |
1935
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844 _exception_offset = code_offset() + offsets->value(CodeOffsets::Exceptions); |
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845 _deoptimize_offset = code_offset() + offsets->value(CodeOffsets::Deopt); |
2106 | 846 if (offsets->value(CodeOffsets::DeoptMH) != -1) { |
1935
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847 _deoptimize_mh_offset = code_offset() + offsets->value(CodeOffsets::DeoptMH); |
1930 | 848 } else { |
849 _deoptimize_mh_offset = -1; | |
850 } | |
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851 } else { |
1930 | 852 _exception_offset = _stub_offset + offsets->value(CodeOffsets::Exceptions); |
853 _deoptimize_offset = _stub_offset + offsets->value(CodeOffsets::Deopt); | |
2106 | 854 if (offsets->value(CodeOffsets::DeoptMH) != -1) { |
1930 | 855 _deoptimize_mh_offset = _stub_offset + offsets->value(CodeOffsets::DeoptMH); |
856 } else { | |
857 _deoptimize_mh_offset = -1; | |
858 } | |
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859 } |
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860 if (offsets->value(CodeOffsets::UnwindHandler) != -1) { |
1748 | 861 _unwind_handler_offset = code_offset() + offsets->value(CodeOffsets::UnwindHandler); |
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862 } else { |
1748 | 863 _unwind_handler_offset = -1; |
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864 } |
1748 | 865 |
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866 _oops_offset = data_offset(); |
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867 _scopes_data_offset = _oops_offset + round_to(code_buffer->total_oop_size (), oopSize); |
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868 _scopes_pcs_offset = _scopes_data_offset + round_to(debug_info->data_size (), oopSize); |
0 | 869 _dependencies_offset = _scopes_pcs_offset + adjust_pcs_size(debug_info->pcs_size()); |
870 _handler_table_offset = _dependencies_offset + round_to(dependencies->size_in_bytes (), oopSize); | |
871 _nul_chk_table_offset = _handler_table_offset + round_to(handler_table->size_in_bytes(), oopSize); | |
872 _nmethod_end_offset = _nul_chk_table_offset + round_to(nul_chk_table->size_in_bytes(), oopSize); | |
873 | |
1748 | 874 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
875 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
876 _osr_entry_point = code_begin() + offsets->value(CodeOffsets::OSR_Entry); | |
0 | 877 _exception_cache = NULL; |
878 _pc_desc_cache.reset_to(scopes_pcs_begin()); | |
879 | |
880 // Copy contents of ScopeDescRecorder to nmethod | |
881 code_buffer->copy_oops_to(this); | |
882 debug_info->copy_to(this); | |
883 dependencies->copy_to(this); | |
989
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884 if (ScavengeRootsInCode && detect_scavenge_root_oops()) { |
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885 CodeCache::add_scavenge_root_nmethod(this); |
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886 } |
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887 debug_only(verify_scavenge_root_oops()); |
0 | 888 |
889 CodeCache::commit(this); | |
890 | |
891 // Copy contents of ExceptionHandlerTable to nmethod | |
892 handler_table->copy_to(this); | |
893 nul_chk_table->copy_to(this); | |
894 | |
895 // we use the information of entry points to find out if a method is | |
896 // static or non static | |
897 assert(compiler->is_c2() || | |
898 _method->is_static() == (entry_point() == _verified_entry_point), | |
899 " entry points must be same for static methods and vice versa"); | |
900 } | |
901 | |
100
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902 bool printnmethods = PrintNMethods |
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903 || CompilerOracle::should_print(_method) |
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904 || CompilerOracle::has_option_string(_method, "PrintNMethods"); |
0 | 905 if (printnmethods || PrintDebugInfo || PrintRelocations || PrintDependencies || PrintExceptionHandlers) { |
906 print_nmethod(printnmethods); | |
907 } | |
908 | |
909 // Note: Do not verify in here as the CodeCache_lock is | |
910 // taken which would conflict with the CompiledIC_lock | |
911 // which taken during the verification of call sites. | |
912 // (was bug - gri 10/25/99) | |
913 | |
914 Events::log("Create nmethod " INTPTR_FORMAT, this); | |
915 } | |
916 | |
917 | |
918 // Print a short set of xml attributes to identify this nmethod. The | |
919 // output should be embedded in some other element. | |
920 void nmethod::log_identity(xmlStream* log) const { | |
921 log->print(" compile_id='%d'", compile_id()); | |
922 const char* nm_kind = compile_kind(); | |
923 if (nm_kind != NULL) log->print(" compile_kind='%s'", nm_kind); | |
924 if (compiler() != NULL) { | |
925 log->print(" compiler='%s'", compiler()->name()); | |
926 } | |
1783 | 927 if (TieredCompilation) { |
928 log->print(" level='%d'", comp_level()); | |
929 } | |
0 | 930 } |
931 | |
932 | |
933 #define LOG_OFFSET(log, name) \ | |
934 if ((intptr_t)name##_end() - (intptr_t)name##_begin()) \ | |
935 log->print(" " XSTR(name) "_offset='%d'" , \ | |
936 (intptr_t)name##_begin() - (intptr_t)this) | |
937 | |
938 | |
939 void nmethod::log_new_nmethod() const { | |
940 if (LogCompilation && xtty != NULL) { | |
941 ttyLocker ttyl; | |
942 HandleMark hm; | |
943 xtty->begin_elem("nmethod"); | |
944 log_identity(xtty); | |
1748 | 945 xtty->print(" entry='" INTPTR_FORMAT "' size='%d'", code_begin(), size()); |
0 | 946 xtty->print(" address='" INTPTR_FORMAT "'", (intptr_t) this); |
947 | |
948 LOG_OFFSET(xtty, relocation); | |
1762
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949 LOG_OFFSET(xtty, consts); |
1748 | 950 LOG_OFFSET(xtty, insts); |
0 | 951 LOG_OFFSET(xtty, stub); |
952 LOG_OFFSET(xtty, scopes_data); | |
953 LOG_OFFSET(xtty, scopes_pcs); | |
954 LOG_OFFSET(xtty, dependencies); | |
955 LOG_OFFSET(xtty, handler_table); | |
956 LOG_OFFSET(xtty, nul_chk_table); | |
957 LOG_OFFSET(xtty, oops); | |
958 | |
959 xtty->method(method()); | |
960 xtty->stamp(); | |
961 xtty->end_elem(); | |
962 } | |
963 } | |
964 | |
965 #undef LOG_OFFSET | |
966 | |
967 | |
968 // Print out more verbose output usually for a newly created nmethod. | |
2405
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969 void nmethod::print_on(outputStream* st, const char* msg) const { |
0 | 970 if (st != NULL) { |
971 ttyLocker ttyl; | |
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972 CompileTask::print_compilation(st, this, msg); |
0 | 973 if (WizardMode) st->print(" (" INTPTR_FORMAT ")", this); |
974 } | |
975 } | |
976 | |
977 | |
978 void nmethod::print_nmethod(bool printmethod) { | |
979 ttyLocker ttyl; // keep the following output all in one block | |
980 if (xtty != NULL) { | |
981 xtty->begin_head("print_nmethod"); | |
982 xtty->stamp(); | |
983 xtty->end_head(); | |
984 } | |
985 // print the header part first | |
986 print(); | |
987 // then print the requested information | |
988 if (printmethod) { | |
989 print_code(); | |
990 print_pcs(); | |
991 oop_maps()->print(); | |
992 } | |
993 if (PrintDebugInfo) { | |
994 print_scopes(); | |
995 } | |
996 if (PrintRelocations) { | |
997 print_relocations(); | |
998 } | |
999 if (PrintDependencies) { | |
1000 print_dependencies(); | |
1001 } | |
1002 if (PrintExceptionHandlers) { | |
1003 print_handler_table(); | |
1004 print_nul_chk_table(); | |
1005 } | |
1006 if (xtty != NULL) { | |
1007 xtty->tail("print_nmethod"); | |
1008 } | |
1009 } | |
1010 | |
1011 | |
1563
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1012 // Promote one word from an assembly-time handle to a live embedded oop. |
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1013 inline void nmethod::initialize_immediate_oop(oop* dest, jobject handle) { |
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1014 if (handle == NULL || |
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1015 // As a special case, IC oops are initialized to 1 or -1. |
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1016 handle == (jobject) Universe::non_oop_word()) { |
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1017 (*dest) = (oop) handle; |
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1018 } else { |
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1019 (*dest) = JNIHandles::resolve_non_null(handle); |
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1020 } |
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1021 } |
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1022 |
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1023 |
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1024 void nmethod::copy_oops(GrowableArray<jobject>* array) { |
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1025 //assert(oops_size() == 0, "do this handshake just once, please"); |
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1026 int length = array->length(); |
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1027 assert((address)(oops_begin() + length) <= data_end(), "oops big enough"); |
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1028 oop* dest = oops_begin(); |
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1029 for (int index = 0 ; index < length; index++) { |
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1030 initialize_immediate_oop(&dest[index], array->at(index)); |
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1031 } |
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1032 |
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1033 // Now we can fix up all the oops in the code. We need to do this |
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1034 // in the code because the assembler uses jobjects as placeholders. |
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1035 // The code and relocations have already been initialized by the |
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1036 // CodeBlob constructor, so it is valid even at this early point to |
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1037 // iterate over relocations and patch the code. |
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1038 fix_oop_relocations(NULL, NULL, /*initialize_immediates=*/ true); |
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1039 } |
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1040 |
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1041 |
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1042 bool nmethod::is_at_poll_return(address pc) { |
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1043 RelocIterator iter(this, pc, pc+1); |
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1044 while (iter.next()) { |
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1045 if (iter.type() == relocInfo::poll_return_type) |
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1046 return true; |
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1047 } |
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1048 return false; |
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1049 } |
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1050 |
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1051 |
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1052 bool nmethod::is_at_poll_or_poll_return(address pc) { |
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1053 RelocIterator iter(this, pc, pc+1); |
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1054 while (iter.next()) { |
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1055 relocInfo::relocType t = iter.type(); |
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1056 if (t == relocInfo::poll_return_type || t == relocInfo::poll_type) |
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1057 return true; |
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1058 } |
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1059 return false; |
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1060 } |
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1061 |
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1062 |
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1063 void nmethod::fix_oop_relocations(address begin, address end, bool initialize_immediates) { |
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1064 // re-patch all oop-bearing instructions, just in case some oops moved |
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1065 RelocIterator iter(this, begin, end); |
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1066 while (iter.next()) { |
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1067 if (iter.type() == relocInfo::oop_type) { |
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1068 oop_Relocation* reloc = iter.oop_reloc(); |
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1069 if (initialize_immediates && reloc->oop_is_immediate()) { |
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1070 oop* dest = reloc->oop_addr(); |
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1071 initialize_immediate_oop(dest, (jobject) *dest); |
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1072 } |
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1073 // Refresh the oop-related bits of this instruction. |
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1074 reloc->fix_oop_relocation(); |
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1075 } |
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1076 |
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1077 // There must not be any interfering patches or breakpoints. |
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1078 assert(!(iter.type() == relocInfo::breakpoint_type |
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1079 && iter.breakpoint_reloc()->active()), |
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1080 "no active breakpoint"); |
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1081 } |
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1082 } |
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1083 |
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1084 |
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1085 void nmethod::verify_oop_relocations() { |
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1086 // Ensure sure that the code matches the current oop values |
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1087 RelocIterator iter(this, NULL, NULL); |
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1088 while (iter.next()) { |
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1089 if (iter.type() == relocInfo::oop_type) { |
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1090 oop_Relocation* reloc = iter.oop_reloc(); |
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1091 if (!reloc->oop_is_immediate()) { |
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1092 reloc->verify_oop_relocation(); |
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1093 } |
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1094 } |
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1095 } |
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1096 } |
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1097 |
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1098 |
0 | 1099 ScopeDesc* nmethod::scope_desc_at(address pc) { |
1100 PcDesc* pd = pc_desc_at(pc); | |
1101 guarantee(pd != NULL, "scope must be present"); | |
1102 return new ScopeDesc(this, pd->scope_decode_offset(), | |
3018
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1103 pd->obj_decode_offset(), pd->should_reexecute(), pd->rethrow_exception(), |
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1104 pd->return_oop()); |
0 | 1105 } |
1106 | |
1107 | |
1108 void nmethod::clear_inline_caches() { | |
1109 assert(SafepointSynchronize::is_at_safepoint(), "cleaning of IC's only allowed at safepoint"); | |
1110 if (is_zombie()) { | |
1111 return; | |
1112 } | |
1113 | |
1114 RelocIterator iter(this); | |
1115 while (iter.next()) { | |
1116 iter.reloc()->clear_inline_cache(); | |
1117 } | |
1118 } | |
1119 | |
1120 | |
1121 void nmethod::cleanup_inline_caches() { | |
1122 | |
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1123 assert_locked_or_safepoint(CompiledIC_lock); |
0 | 1124 |
1125 // If the method is not entrant or zombie then a JMP is plastered over the | |
1126 // first few bytes. If an oop in the old code was there, that oop | |
1127 // should not get GC'd. Skip the first few bytes of oops on | |
1128 // not-entrant methods. | |
1129 address low_boundary = verified_entry_point(); | |
1130 if (!is_in_use()) { | |
1131 low_boundary += NativeJump::instruction_size; | |
1132 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
1133 // This means that the low_boundary is going to be a little too high. | |
1134 // This shouldn't matter, since oops of non-entrant methods are never used. | |
1135 // In fact, why are we bothering to look at oops in a non-entrant method?? | |
1136 } | |
1137 | |
1138 // Find all calls in an nmethod, and clear the ones that points to zombie methods | |
1139 ResourceMark rm; | |
1140 RelocIterator iter(this, low_boundary); | |
1141 while(iter.next()) { | |
1142 switch(iter.type()) { | |
1143 case relocInfo::virtual_call_type: | |
1144 case relocInfo::opt_virtual_call_type: { | |
1145 CompiledIC *ic = CompiledIC_at(iter.reloc()); | |
1146 // Ok, to lookup references to zombies here | |
1147 CodeBlob *cb = CodeCache::find_blob_unsafe(ic->ic_destination()); | |
1148 if( cb != NULL && cb->is_nmethod() ) { | |
1149 nmethod* nm = (nmethod*)cb; | |
1150 // Clean inline caches pointing to both zombie and not_entrant methods | |
1202 | 1151 if (!nm->is_in_use() || (nm->method()->code() != nm)) ic->set_to_clean(); |
0 | 1152 } |
1153 break; | |
1154 } | |
1155 case relocInfo::static_call_type: { | |
1156 CompiledStaticCall *csc = compiledStaticCall_at(iter.reloc()); | |
1157 CodeBlob *cb = CodeCache::find_blob_unsafe(csc->destination()); | |
1158 if( cb != NULL && cb->is_nmethod() ) { | |
1159 nmethod* nm = (nmethod*)cb; | |
1160 // Clean inline caches pointing to both zombie and not_entrant methods | |
1202 | 1161 if (!nm->is_in_use() || (nm->method()->code() != nm)) csc->set_to_clean(); |
0 | 1162 } |
1163 break; | |
1164 } | |
1165 } | |
1166 } | |
1167 } | |
1168 | |
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1169 // This is a private interface with the sweeper. |
0 | 1170 void nmethod::mark_as_seen_on_stack() { |
1171 assert(is_not_entrant(), "must be a non-entrant method"); | |
1644
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1172 // Set the traversal mark to ensure that the sweeper does 2 |
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1173 // cleaning passes before moving to zombie. |
0 | 1174 set_stack_traversal_mark(NMethodSweeper::traversal_count()); |
1175 } | |
1176 | |
2342
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1177 // Tell if a non-entrant method can be converted to a zombie (i.e., |
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1178 // there are no activations on the stack, not in use by the VM, |
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1179 // and not in use by the ServiceThread) |
0 | 1180 bool nmethod::can_not_entrant_be_converted() { |
1181 assert(is_not_entrant(), "must be a non-entrant method"); | |
1182 | |
1183 // Since the nmethod sweeper only does partial sweep the sweeper's traversal | |
1184 // count can be greater than the stack traversal count before it hits the | |
1185 // nmethod for the second time. | |
2342
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1186 return stack_traversal_mark()+1 < NMethodSweeper::traversal_count() && |
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1187 !is_locked_by_vm(); |
0 | 1188 } |
1189 | |
1190 void nmethod::inc_decompile_count() { | |
1783 | 1191 if (!is_compiled_by_c2()) return; |
0 | 1192 // Could be gated by ProfileTraps, but do not bother... |
1193 methodOop m = method(); | |
1194 if (m == NULL) return; | |
1195 methodDataOop mdo = m->method_data(); | |
1196 if (mdo == NULL) return; | |
1197 // There is a benign race here. See comments in methodDataOop.hpp. | |
1198 mdo->inc_decompile_count(); | |
1199 } | |
1200 | |
1201 void nmethod::make_unloaded(BoolObjectClosure* is_alive, oop cause) { | |
1202 | |
1203 post_compiled_method_unload(); | |
1204 | |
1205 // Since this nmethod is being unloaded, make sure that dependencies | |
1206 // recorded in instanceKlasses get flushed and pass non-NULL closure to | |
1207 // indicate that this work is being done during a GC. | |
1208 assert(Universe::heap()->is_gc_active(), "should only be called during gc"); | |
1209 assert(is_alive != NULL, "Should be non-NULL"); | |
1210 // A non-NULL is_alive closure indicates that this is being called during GC. | |
1211 flush_dependencies(is_alive); | |
1212 | |
1213 // Break cycle between nmethod & method | |
1214 if (TraceClassUnloading && WizardMode) { | |
1215 tty->print_cr("[Class unloading: Making nmethod " INTPTR_FORMAT | |
1216 " unloadable], methodOop(" INTPTR_FORMAT | |
1217 "), cause(" INTPTR_FORMAT ")", | |
1218 this, (address)_method, (address)cause); | |
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1219 if (!Universe::heap()->is_gc_active()) |
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1220 cause->klass()->print(); |
0 | 1221 } |
941 | 1222 // Unlink the osr method, so we do not look this up again |
1223 if (is_osr_method()) { | |
1224 invalidate_osr_method(); | |
1225 } | |
0 | 1226 // If _method is already NULL the methodOop is about to be unloaded, |
1227 // so we don't have to break the cycle. Note that it is possible to | |
1228 // have the methodOop live here, in case we unload the nmethod because | |
1229 // it is pointing to some oop (other than the methodOop) being unloaded. | |
1230 if (_method != NULL) { | |
1231 // OSR methods point to the methodOop, but the methodOop does not | |
1232 // point back! | |
1233 if (_method->code() == this) { | |
1234 _method->clear_code(); // Break a cycle | |
1235 } | |
1236 _method = NULL; // Clear the method of this dead nmethod | |
1237 } | |
1238 // Make the class unloaded - i.e., change state and notify sweeper | |
1538
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1239 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint"); |
0 | 1240 if (is_in_use()) { |
1241 // Transitioning directly from live to unloaded -- so | |
1242 // we need to force a cache clean-up; remember this | |
1243 // for later on. | |
1244 CodeCache::set_needs_cache_clean(true); | |
1245 } | |
1644
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1246 _state = unloaded; |
0 | 1247 |
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1248 // Log the unloading. |
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1249 log_state_change(); |
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1250 |
0 | 1251 // The methodOop is gone at this point |
1252 assert(_method == NULL, "Tautology"); | |
1253 | |
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1254 set_osr_link(NULL); |
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1255 //set_scavenge_root_link(NULL); // done by prune_scavenge_root_nmethods |
0 | 1256 NMethodSweeper::notify(this); |
1257 } | |
1258 | |
1259 void nmethod::invalidate_osr_method() { | |
1260 assert(_entry_bci != InvocationEntryBci, "wrong kind of nmethod"); | |
1261 // Remove from list of active nmethods | |
1262 if (method() != NULL) | |
1263 instanceKlass::cast(method()->method_holder())->remove_osr_nmethod(this); | |
1264 // Set entry as invalid | |
1265 _entry_bci = InvalidOSREntryBci; | |
1266 } | |
1267 | |
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1268 void nmethod::log_state_change() const { |
0 | 1269 if (LogCompilation) { |
1270 if (xtty != NULL) { | |
1271 ttyLocker ttyl; // keep the following output all in one block | |
1644
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1272 if (_state == unloaded) { |
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1273 xtty->begin_elem("make_unloaded thread='" UINTX_FORMAT "'", |
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1274 os::current_thread_id()); |
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1275 } else { |
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1276 xtty->begin_elem("make_not_entrant thread='" UINTX_FORMAT "'%s", |
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1277 os::current_thread_id(), |
1644
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1278 (_state == zombie ? " zombie='1'" : "")); |
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1279 } |
0 | 1280 log_identity(xtty); |
1281 xtty->stamp(); | |
1282 xtty->end_elem(); | |
1283 } | |
1284 } | |
1644
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1285 if (PrintCompilation && _state != unloaded) { |
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1286 print_on(tty, _state == zombie ? "made zombie" : "made not entrant"); |
0 | 1287 } |
1288 } | |
1289 | |
1290 // Common functionality for both make_not_entrant and make_zombie | |
1141 | 1291 bool nmethod::make_not_entrant_or_zombie(unsigned int state) { |
0 | 1292 assert(state == zombie || state == not_entrant, "must be zombie or not_entrant"); |
2342
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1293 assert(!is_zombie(), "should not already be a zombie"); |
0 | 1294 |
1644
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1295 // Make sure neither the nmethod nor the method is flushed in case of a safepoint in code below. |
0 | 1296 nmethodLocker nml(this); |
1644
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1297 methodHandle the_method(method()); |
1726 | 1298 No_Safepoint_Verifier nsv; |
0 | 1299 |
1300 { | |
1109
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1301 // invalidate osr nmethod before acquiring the patching lock since |
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1302 // they both acquire leaf locks and we don't want a deadlock. |
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1303 // This logic is equivalent to the logic below for patching the |
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1304 // verified entry point of regular methods. |
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1305 if (is_osr_method()) { |
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1306 // this effectively makes the osr nmethod not entrant |
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1307 invalidate_osr_method(); |
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1308 } |
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1309 |
0 | 1310 // Enter critical section. Does not block for safepoint. |
1311 MutexLockerEx pl(Patching_lock, Mutex::_no_safepoint_check_flag); | |
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1312 |
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1313 if (_state == state) { |
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1314 // another thread already performed this transition so nothing |
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1315 // to do, but return false to indicate this. |
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1316 return false; |
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1317 } |
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1318 |
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1319 #ifdef GRAAL |
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1320 if (_graal_compiled_method != NULL) { |
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1321 HotSpotCompiledMethod::set_nmethod(_graal_compiled_method, 0); |
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1322 _graal_compiled_method = NULL; |
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1323 } |
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1324 #endif |
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1325 |
0 | 1326 // The caller can be calling the method statically or through an inline |
1327 // cache call. | |
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1328 if (!is_osr_method() && !is_not_entrant()) { |
0 | 1329 NativeJump::patch_verified_entry(entry_point(), verified_entry_point(), |
1330 SharedRuntime::get_handle_wrong_method_stub()); | |
1331 } | |
1332 | |
1644
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1333 if (is_in_use()) { |
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1334 // It's a true state change, so mark the method as decompiled. |
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1335 // Do it only for transition from alive. |
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1336 inc_decompile_count(); |
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1337 } |
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1338 |
0 | 1339 // Change state |
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1340 _state = state; |
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1341 |
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1342 // Log the transition once |
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1343 log_state_change(); |
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1344 |
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1345 // Remove nmethod from method. |
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1346 // We need to check if both the _code and _from_compiled_code_entry_point |
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1347 // refer to this nmethod because there is a race in setting these two fields |
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1348 // in methodOop as seen in bugid 4947125. |
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1349 // If the vep() points to the zombie nmethod, the memory for the nmethod |
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1350 // could be flushed and the compiler and vtable stubs could still call |
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1351 // through it. |
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1352 if (method() != NULL && (method()->code() == this || |
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1353 method()->from_compiled_entry() == verified_entry_point())) { |
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1354 HandleMark hm; |
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1355 method()->clear_code(); |
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1356 } |
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1357 |
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1358 if (state == not_entrant) { |
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1359 mark_as_seen_on_stack(); |
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1360 } |
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1361 |
0 | 1362 } // leave critical region under Patching_lock |
1363 | |
1538
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1364 // When the nmethod becomes zombie it is no longer alive so the |
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1365 // dependencies must be flushed. nmethods in the not_entrant |
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1366 // state will be flushed later when the transition to zombie |
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1367 // happens or they get unloaded. |
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1368 if (state == zombie) { |
1726 | 1369 { |
1370 // Flushing dependecies must be done before any possible | |
1371 // safepoint can sneak in, otherwise the oops used by the | |
1372 // dependency logic could have become stale. | |
1373 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
1374 flush_dependencies(NULL); | |
1375 } | |
1644
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1376 |
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1377 // zombie only - if a JVMTI agent has enabled the CompiledMethodUnload |
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1378 // event and it hasn't already been reported for this nmethod then |
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1379 // report it now. The event may have been reported earilier if the GC |
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1380 // marked it for unloading). JvmtiDeferredEventQueue support means |
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1381 // we no longer go to a safepoint here. |
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1382 post_compiled_method_unload(); |
1726 | 1383 |
1384 #ifdef ASSERT | |
1385 // It's no longer safe to access the oops section since zombie | |
1386 // nmethods aren't scanned for GC. | |
1387 _oops_are_stale = true; | |
1388 #endif | |
1538
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1389 } else { |
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1390 assert(state == not_entrant, "other cases may need to be handled differently"); |
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1391 } |
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1392 |
0 | 1393 if (TraceCreateZombies) { |
1394 tty->print_cr("nmethod <" INTPTR_FORMAT "> code made %s", this, (state == not_entrant) ? "not entrant" : "zombie"); | |
1395 } | |
1396 | |
1397 // Make sweeper aware that there is a zombie method that needs to be removed | |
1398 NMethodSweeper::notify(this); | |
1399 | |
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1400 return true; |
0 | 1401 } |
1402 | |
1403 void nmethod::flush() { | |
1404 // Note that there are no valid oops in the nmethod anymore. | |
1405 assert(is_zombie() || (is_osr_method() && is_unloaded()), "must be a zombie method"); | |
1406 assert(is_marked_for_reclamation() || (is_osr_method() && is_unloaded()), "must be marked for reclamation"); | |
1407 | |
1408 assert (!is_locked_by_vm(), "locked methods shouldn't be flushed"); | |
1538
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1409 assert_locked_or_safepoint(CodeCache_lock); |
0 | 1410 |
1411 // completely deallocate this method | |
1412 EventMark m("flushing nmethod " INTPTR_FORMAT " %s", this, ""); | |
1413 if (PrintMethodFlushing) { | |
1202 | 1414 tty->print_cr("*flushing nmethod %3d/" INTPTR_FORMAT ". Live blobs:" UINT32_FORMAT "/Free CodeCache:" SIZE_FORMAT "Kb", |
1415 _compile_id, this, CodeCache::nof_blobs(), CodeCache::unallocated_capacity()/1024); | |
0 | 1416 } |
1417 | |
1418 // We need to deallocate any ExceptionCache data. | |
1419 // Note that we do not need to grab the nmethod lock for this, it | |
1420 // better be thread safe if we're disposing of it! | |
1421 ExceptionCache* ec = exception_cache(); | |
1422 set_exception_cache(NULL); | |
1423 while(ec != NULL) { | |
1424 ExceptionCache* next = ec->next(); | |
1425 delete ec; | |
1426 ec = next; | |
1427 } | |
1428 | |
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1429 if (on_scavenge_root_list()) { |
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1430 CodeCache::drop_scavenge_root_nmethod(this); |
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1431 } |
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1432 |
1202 | 1433 if (is_speculatively_disconnected()) { |
1434 CodeCache::remove_saved_code(this); | |
1435 } | |
1436 | |
1692 | 1437 #ifdef SHARK |
1845
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1438 ((SharkCompiler *) compiler())->free_compiled_method(insts_begin()); |
1692 | 1439 #endif // SHARK |
1440 | |
0 | 1441 ((CodeBlob*)(this))->flush(); |
1442 | |
1443 CodeCache::free(this); | |
1444 } | |
1445 | |
1446 | |
1447 // | |
1448 // Notify all classes this nmethod is dependent on that it is no | |
1449 // longer dependent. This should only be called in two situations. | |
1450 // First, when a nmethod transitions to a zombie all dependents need | |
1451 // to be clear. Since zombification happens at a safepoint there's no | |
1452 // synchronization issues. The second place is a little more tricky. | |
1453 // During phase 1 of mark sweep class unloading may happen and as a | |
1454 // result some nmethods may get unloaded. In this case the flushing | |
1455 // of dependencies must happen during phase 1 since after GC any | |
1456 // dependencies in the unloaded nmethod won't be updated, so | |
1457 // traversing the dependency information in unsafe. In that case this | |
1458 // function is called with a non-NULL argument and this function only | |
1459 // notifies instanceKlasses that are reachable | |
1460 | |
1461 void nmethod::flush_dependencies(BoolObjectClosure* is_alive) { | |
1538
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1462 assert_locked_or_safepoint(CodeCache_lock); |
0 | 1463 assert(Universe::heap()->is_gc_active() == (is_alive != NULL), |
1464 "is_alive is non-NULL if and only if we are called during GC"); | |
1465 if (!has_flushed_dependencies()) { | |
1466 set_has_flushed_dependencies(); | |
1467 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
1468 klassOop klass = deps.context_type(); | |
1469 if (klass == NULL) continue; // ignore things like evol_method | |
1470 | |
1471 // During GC the is_alive closure is non-NULL, and is used to | |
1472 // determine liveness of dependees that need to be updated. | |
1473 if (is_alive == NULL || is_alive->do_object_b(klass)) { | |
1474 instanceKlass::cast(klass)->remove_dependent_nmethod(this); | |
1475 } | |
1476 } | |
1477 } | |
1478 } | |
1479 | |
1480 | |
1481 // If this oop is not live, the nmethod can be unloaded. | |
1482 bool nmethod::can_unload(BoolObjectClosure* is_alive, | |
1483 OopClosure* keep_alive, | |
1484 oop* root, bool unloading_occurred) { | |
1485 assert(root != NULL, "just checking"); | |
1486 oop obj = *root; | |
1487 if (obj == NULL || is_alive->do_object_b(obj)) { | |
1488 return false; | |
1489 } | |
1490 if (obj->is_compiledICHolder()) { | |
1491 compiledICHolderOop cichk_oop = compiledICHolderOop(obj); | |
1492 if (is_alive->do_object_b( | |
1493 cichk_oop->holder_method()->method_holder()) && | |
1494 is_alive->do_object_b(cichk_oop->holder_klass())) { | |
1495 // The oop should be kept alive | |
1496 keep_alive->do_oop(root); | |
1497 return false; | |
1498 } | |
1499 } | |
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1500 // If ScavengeRootsInCode is true, an nmethod might be unloaded |
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1501 // simply because one of its constant oops has gone dead. |
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1502 // No actual classes need to be unloaded in order for this to occur. |
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1503 assert(unloading_occurred || ScavengeRootsInCode, "Inconsistency in unloading"); |
0 | 1504 make_unloaded(is_alive, obj); |
1505 return true; | |
1506 } | |
1507 | |
1508 // ------------------------------------------------------------------ | |
1509 // post_compiled_method_load_event | |
1510 // new method for install_code() path | |
1511 // Transfer information from compilation to jvmti | |
1512 void nmethod::post_compiled_method_load_event() { | |
1513 | |
1514 methodOop moop = method(); | |
4006 | 1515 #ifndef USDT2 |
0 | 1516 HS_DTRACE_PROBE8(hotspot, compiled__method__load, |
1517 moop->klass_name()->bytes(), | |
1518 moop->klass_name()->utf8_length(), | |
1519 moop->name()->bytes(), | |
1520 moop->name()->utf8_length(), | |
1521 moop->signature()->bytes(), | |
1522 moop->signature()->utf8_length(), | |
1748 | 1523 insts_begin(), insts_size()); |
4006 | 1524 #else /* USDT2 */ |
1525 HOTSPOT_COMPILED_METHOD_LOAD( | |
1526 (char *) moop->klass_name()->bytes(), | |
1527 moop->klass_name()->utf8_length(), | |
1528 (char *) moop->name()->bytes(), | |
1529 moop->name()->utf8_length(), | |
1530 (char *) moop->signature()->bytes(), | |
1531 moop->signature()->utf8_length(), | |
1532 insts_begin(), insts_size()); | |
1533 #endif /* USDT2 */ | |
0 | 1534 |
1616
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1535 if (JvmtiExport::should_post_compiled_method_load() || |
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1536 JvmtiExport::should_post_compiled_method_unload()) { |
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1537 get_and_cache_jmethod_id(); |
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1538 } |
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1539 |
0 | 1540 if (JvmtiExport::should_post_compiled_method_load()) { |
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1541 // Let the Service thread (which is a real Java thread) post the event |
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1542 MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag); |
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1543 JvmtiDeferredEventQueue::enqueue( |
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1544 JvmtiDeferredEvent::compiled_method_load_event(this)); |
0 | 1545 } |
1546 } | |
1547 | |
1616
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1548 jmethodID nmethod::get_and_cache_jmethod_id() { |
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1549 if (_jmethod_id == NULL) { |
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|
1550 // Cache the jmethod_id since it can no longer be looked up once the |
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1551 // method itself has been marked for unloading. |
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1552 _jmethod_id = method()->jmethod_id(); |
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1553 } |
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1554 return _jmethod_id; |
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|
1555 } |
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|
1556 |
0 | 1557 void nmethod::post_compiled_method_unload() { |
1577
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1558 if (unload_reported()) { |
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1559 // During unloading we transition to unloaded and then to zombie |
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1560 // and the unloading is reported during the first transition. |
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1561 return; |
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|
1562 } |
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|
1563 |
0 | 1564 assert(_method != NULL && !is_unloaded(), "just checking"); |
1565 DTRACE_METHOD_UNLOAD_PROBE(method()); | |
1566 | |
1567 // If a JVMTI agent has enabled the CompiledMethodUnload event then | |
1616
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|
1568 // post the event. Sometime later this nmethod will be made a zombie |
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|
1569 // by the sweeper but the methodOop will not be valid at that point. |
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|
1570 // If the _jmethod_id is null then no load event was ever requested |
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1571 // so don't bother posting the unload. The main reason for this is |
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|
1572 // that the jmethodID is a weak reference to the methodOop so if |
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|
1573 // it's being unloaded there's no way to look it up since the weak |
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|
1574 // ref will have been cleared. |
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|
1575 if (_jmethod_id != NULL && JvmtiExport::should_post_compiled_method_unload()) { |
0 | 1576 assert(!unload_reported(), "already unloaded"); |
2195
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|
1577 JvmtiDeferredEvent event = |
2342
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|
1578 JvmtiDeferredEvent::compiled_method_unload_event(this, |
2195
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|
1579 _jmethod_id, insts_begin()); |
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|
1580 if (SafepointSynchronize::is_at_safepoint()) { |
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|
1581 // Don't want to take the queueing lock. Add it as pending and |
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1582 // it will get enqueued later. |
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1583 JvmtiDeferredEventQueue::add_pending_event(event); |
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|
1584 } else { |
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|
1585 MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag); |
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1586 JvmtiDeferredEventQueue::enqueue(event); |
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1587 } |
0 | 1588 } |
1589 | |
1590 // The JVMTI CompiledMethodUnload event can be enabled or disabled at | |
1591 // any time. As the nmethod is being unloaded now we mark it has | |
1592 // having the unload event reported - this will ensure that we don't | |
1593 // attempt to report the event in the unlikely scenario where the | |
1594 // event is enabled at the time the nmethod is made a zombie. | |
1595 set_unload_reported(); | |
1596 } | |
1597 | |
1598 // This is called at the end of the strong tracing/marking phase of a | |
1599 // GC to unload an nmethod if it contains otherwise unreachable | |
1600 // oops. | |
1601 | |
1602 void nmethod::do_unloading(BoolObjectClosure* is_alive, | |
1603 OopClosure* keep_alive, bool unloading_occurred) { | |
1604 // Make sure the oop's ready to receive visitors | |
1605 assert(!is_zombie() && !is_unloaded(), | |
1606 "should not call follow on zombie or unloaded nmethod"); | |
1607 | |
1608 // If the method is not entrant then a JMP is plastered over the | |
1609 // first few bytes. If an oop in the old code was there, that oop | |
1610 // should not get GC'd. Skip the first few bytes of oops on | |
1611 // not-entrant methods. | |
1612 address low_boundary = verified_entry_point(); | |
1613 if (is_not_entrant()) { | |
1614 low_boundary += NativeJump::instruction_size; | |
1615 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
1616 // (See comment above.) | |
1617 } | |
1618 | |
1619 // The RedefineClasses() API can cause the class unloading invariant | |
1620 // to no longer be true. See jvmtiExport.hpp for details. | |
1621 // Also, leave a debugging breadcrumb in local flag. | |
1622 bool a_class_was_redefined = JvmtiExport::has_redefined_a_class(); | |
1623 if (a_class_was_redefined) { | |
1624 // This set of the unloading_occurred flag is done before the | |
1625 // call to post_compiled_method_unload() so that the unloading | |
1626 // of this nmethod is reported. | |
1627 unloading_occurred = true; | |
1628 } | |
1629 | |
1630 // Follow methodOop | |
1631 if (can_unload(is_alive, keep_alive, (oop*)&_method, unloading_occurred)) { | |
1632 return; | |
1633 } | |
1634 | |
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1635 if (_graal_compiled_method != NULL && can_unload(is_alive, keep_alive, (oop*)&_graal_compiled_method, unloading_occurred)) { |
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1636 return; |
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|
1637 } |
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1638 |
0 | 1639 // Exception cache |
1640 ExceptionCache* ec = exception_cache(); | |
1641 while (ec != NULL) { | |
1642 oop* ex_addr = (oop*)ec->exception_type_addr(); | |
1643 oop ex = *ex_addr; | |
1644 ExceptionCache* next_ec = ec->next(); | |
1645 if (ex != NULL && !is_alive->do_object_b(ex)) { | |
1646 assert(!ex->is_compiledICHolder(), "Possible error here"); | |
1647 remove_from_exception_cache(ec); | |
1648 } | |
1649 ec = next_ec; | |
1650 } | |
1651 | |
1652 // If class unloading occurred we first iterate over all inline caches and | |
1653 // clear ICs where the cached oop is referring to an unloaded klass or method. | |
1654 // The remaining live cached oops will be traversed in the relocInfo::oop_type | |
1655 // iteration below. | |
1656 if (unloading_occurred) { | |
1657 RelocIterator iter(this, low_boundary); | |
1658 while(iter.next()) { | |
1659 if (iter.type() == relocInfo::virtual_call_type) { | |
1660 CompiledIC *ic = CompiledIC_at(iter.reloc()); | |
1661 oop ic_oop = ic->cached_oop(); | |
1662 if (ic_oop != NULL && !is_alive->do_object_b(ic_oop)) { | |
1663 // The only exception is compiledICHolder oops which may | |
1664 // yet be marked below. (We check this further below). | |
1665 if (ic_oop->is_compiledICHolder()) { | |
1666 compiledICHolderOop cichk_oop = compiledICHolderOop(ic_oop); | |
1667 if (is_alive->do_object_b( | |
1668 cichk_oop->holder_method()->method_holder()) && | |
1669 is_alive->do_object_b(cichk_oop->holder_klass())) { | |
1670 continue; | |
1671 } | |
1672 } | |
1673 ic->set_to_clean(); | |
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1674 assert(ic->cached_oop() == NULL, |
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1675 "cached oop in IC should be cleared"); |
0 | 1676 } |
1677 } | |
1678 } | |
1679 } | |
1680 | |
1681 // Compiled code | |
1682 RelocIterator iter(this, low_boundary); | |
1683 while (iter.next()) { | |
1684 if (iter.type() == relocInfo::oop_type) { | |
1685 oop_Relocation* r = iter.oop_reloc(); | |
1686 // In this loop, we must only traverse those oops directly embedded in | |
1687 // the code. Other oops (oop_index>0) are seen as part of scopes_oops. | |
1688 assert(1 == (r->oop_is_immediate()) + | |
1689 (r->oop_addr() >= oops_begin() && r->oop_addr() < oops_end()), | |
1690 "oop must be found in exactly one place"); | |
1691 if (r->oop_is_immediate() && r->oop_value() != NULL) { | |
1692 if (can_unload(is_alive, keep_alive, r->oop_addr(), unloading_occurred)) { | |
1693 return; | |
1694 } | |
1695 } | |
1696 } | |
1697 } | |
1698 | |
1699 | |
1700 // Scopes | |
1701 for (oop* p = oops_begin(); p < oops_end(); p++) { | |
1702 if (*p == Universe::non_oop_word()) continue; // skip non-oops | |
1703 if (can_unload(is_alive, keep_alive, p, unloading_occurred)) { | |
1704 return; | |
1705 } | |
1706 } | |
1707 | |
1708 #ifndef PRODUCT | |
1709 // This nmethod was not unloaded; check below that all CompiledICs | |
1710 // refer to marked oops. | |
1711 { | |
1712 RelocIterator iter(this, low_boundary); | |
1713 while (iter.next()) { | |
1714 if (iter.type() == relocInfo::virtual_call_type) { | |
1715 CompiledIC *ic = CompiledIC_at(iter.reloc()); | |
1716 oop ic_oop = ic->cached_oop(); | |
1717 assert(ic_oop == NULL || is_alive->do_object_b(ic_oop), | |
1718 "Found unmarked ic_oop in reachable nmethod"); | |
1719 } | |
1720 } | |
1721 } | |
1722 #endif // !PRODUCT | |
1723 } | |
1724 | |
941 | 1725 // This method is called twice during GC -- once while |
1726 // tracing the "active" nmethods on thread stacks during | |
1727 // the (strong) marking phase, and then again when walking | |
1728 // the code cache contents during the weak roots processing | |
1729 // phase. The two uses are distinguished by means of the | |
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1730 // 'do_strong_roots_only' flag, which is true in the first |
941 | 1731 // case. We want to walk the weak roots in the nmethod |
1732 // only in the second case. The weak roots in the nmethod | |
1733 // are the oops in the ExceptionCache and the InlineCache | |
1734 // oops. | |
994
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1735 void nmethod::oops_do(OopClosure* f, bool do_strong_roots_only) { |
0 | 1736 // make sure the oops ready to receive visitors |
1737 assert(!is_zombie() && !is_unloaded(), | |
1738 "should not call follow on zombie or unloaded nmethod"); | |
1739 | |
1740 // If the method is not entrant or zombie then a JMP is plastered over the | |
1741 // first few bytes. If an oop in the old code was there, that oop | |
1742 // should not get GC'd. Skip the first few bytes of oops on | |
1743 // not-entrant methods. | |
1744 address low_boundary = verified_entry_point(); | |
1745 if (is_not_entrant()) { | |
1746 low_boundary += NativeJump::instruction_size; | |
1747 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
1748 // (See comment above.) | |
1749 } | |
1750 | |
1751 // Compiled code | |
1752 f->do_oop((oop*) &_method); | |
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1753 f->do_oop((oop*) &_graal_compiled_method); |
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1754 if (!do_strong_roots_only) { |
941 | 1755 // weak roots processing phase -- update ExceptionCache oops |
1756 ExceptionCache* ec = exception_cache(); | |
1757 while(ec != NULL) { | |
1758 f->do_oop((oop*)ec->exception_type_addr()); | |
1759 ec = ec->next(); | |
1760 } | |
1761 } // Else strong roots phase -- skip oops in ExceptionCache | |
0 | 1762 |
1763 RelocIterator iter(this, low_boundary); | |
941 | 1764 |
0 | 1765 while (iter.next()) { |
1766 if (iter.type() == relocInfo::oop_type ) { | |
1767 oop_Relocation* r = iter.oop_reloc(); | |
1768 // In this loop, we must only follow those oops directly embedded in | |
1769 // the code. Other oops (oop_index>0) are seen as part of scopes_oops. | |
941 | 1770 assert(1 == (r->oop_is_immediate()) + |
1771 (r->oop_addr() >= oops_begin() && r->oop_addr() < oops_end()), | |
1772 "oop must be found in exactly one place"); | |
0 | 1773 if (r->oop_is_immediate() && r->oop_value() != NULL) { |
1774 f->do_oop(r->oop_addr()); | |
1775 } | |
1776 } | |
1777 } | |
1778 | |
1779 // Scopes | |
989
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1780 // This includes oop constants not inlined in the code stream. |
0 | 1781 for (oop* p = oops_begin(); p < oops_end(); p++) { |
1782 if (*p == Universe::non_oop_word()) continue; // skip non-oops | |
1783 f->do_oop(p); | |
1784 } | |
1785 } | |
1786 | |
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1787 #define NMETHOD_SENTINEL ((nmethod*)badAddress) |
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1788 |
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1789 nmethod* volatile nmethod::_oops_do_mark_nmethods; |
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1790 |
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1791 // An nmethod is "marked" if its _mark_link is set non-null. |
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1792 // Even if it is the end of the linked list, it will have a non-null link value, |
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1793 // as long as it is on the list. |
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1794 // This code must be MP safe, because it is used from parallel GC passes. |
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1795 bool nmethod::test_set_oops_do_mark() { |
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1796 assert(nmethod::oops_do_marking_is_active(), "oops_do_marking_prologue must be called"); |
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1797 nmethod* observed_mark_link = _oops_do_mark_link; |
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1798 if (observed_mark_link == NULL) { |
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1799 // Claim this nmethod for this thread to mark. |
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1800 observed_mark_link = (nmethod*) |
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1801 Atomic::cmpxchg_ptr(NMETHOD_SENTINEL, &_oops_do_mark_link, NULL); |
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1802 if (observed_mark_link == NULL) { |
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1803 |
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1804 // Atomically append this nmethod (now claimed) to the head of the list: |
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1805 nmethod* observed_mark_nmethods = _oops_do_mark_nmethods; |
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1806 for (;;) { |
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1807 nmethod* required_mark_nmethods = observed_mark_nmethods; |
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1808 _oops_do_mark_link = required_mark_nmethods; |
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1809 observed_mark_nmethods = (nmethod*) |
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1810 Atomic::cmpxchg_ptr(this, &_oops_do_mark_nmethods, required_mark_nmethods); |
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1811 if (observed_mark_nmethods == required_mark_nmethods) |
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1812 break; |
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1813 } |
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1814 // Mark was clear when we first saw this guy. |
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1815 NOT_PRODUCT(if (TraceScavenge) print_on(tty, "oops_do, mark")); |
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1816 return false; |
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1817 } |
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1818 } |
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1819 // On fall through, another racing thread marked this nmethod before we did. |
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1820 return true; |
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1821 } |
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1822 |
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1823 void nmethod::oops_do_marking_prologue() { |
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1824 NOT_PRODUCT(if (TraceScavenge) tty->print_cr("[oops_do_marking_prologue")); |
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1825 assert(_oops_do_mark_nmethods == NULL, "must not call oops_do_marking_prologue twice in a row"); |
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1826 // We use cmpxchg_ptr instead of regular assignment here because the user |
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1827 // may fork a bunch of threads, and we need them all to see the same state. |
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1828 void* observed = Atomic::cmpxchg_ptr(NMETHOD_SENTINEL, &_oops_do_mark_nmethods, NULL); |
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1829 guarantee(observed == NULL, "no races in this sequential code"); |
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1830 } |
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1831 |
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1832 void nmethod::oops_do_marking_epilogue() { |
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1833 assert(_oops_do_mark_nmethods != NULL, "must not call oops_do_marking_epilogue twice in a row"); |
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1834 nmethod* cur = _oops_do_mark_nmethods; |
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1835 while (cur != NMETHOD_SENTINEL) { |
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1836 assert(cur != NULL, "not NULL-terminated"); |
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1837 nmethod* next = cur->_oops_do_mark_link; |
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1838 cur->_oops_do_mark_link = NULL; |
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1839 cur->fix_oop_relocations(); |
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1840 NOT_PRODUCT(if (TraceScavenge) cur->print_on(tty, "oops_do, unmark")); |
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1841 cur = next; |
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1842 } |
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1843 void* required = _oops_do_mark_nmethods; |
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1844 void* observed = Atomic::cmpxchg_ptr(NULL, &_oops_do_mark_nmethods, required); |
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1845 guarantee(observed == required, "no races in this sequential code"); |
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1846 NOT_PRODUCT(if (TraceScavenge) tty->print_cr("oops_do_marking_epilogue]")); |
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1847 } |
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1848 |
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1849 class DetectScavengeRoot: public OopClosure { |
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1850 bool _detected_scavenge_root; |
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1851 public: |
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1852 DetectScavengeRoot() : _detected_scavenge_root(false) |
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1853 { NOT_PRODUCT(_print_nm = NULL); } |
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1854 bool detected_scavenge_root() { return _detected_scavenge_root; } |
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1855 virtual void do_oop(oop* p) { |
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1856 if ((*p) != NULL && (*p)->is_scavengable()) { |
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1857 NOT_PRODUCT(maybe_print(p)); |
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1858 _detected_scavenge_root = true; |
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1859 } |
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1860 } |
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1861 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
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1862 |
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1863 #ifndef PRODUCT |
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1864 nmethod* _print_nm; |
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1865 void maybe_print(oop* p) { |
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1866 if (_print_nm == NULL) return; |
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1867 if (!_detected_scavenge_root) _print_nm->print_on(tty, "new scavenge root"); |
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1868 tty->print_cr(""PTR_FORMAT"[offset=%d] detected scavengable oop "PTR_FORMAT" (found at "PTR_FORMAT")", |
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1869 _print_nm, (int)((intptr_t)p - (intptr_t)_print_nm), |
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1870 (intptr_t)(*p), (intptr_t)p); |
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1871 (*p)->print(); |
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1872 } |
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1873 #endif //PRODUCT |
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1874 }; |
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1875 |
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1876 bool nmethod::detect_scavenge_root_oops() { |
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1877 DetectScavengeRoot detect_scavenge_root; |
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1878 NOT_PRODUCT(if (TraceScavenge) detect_scavenge_root._print_nm = this); |
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1879 oops_do(&detect_scavenge_root); |
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1880 return detect_scavenge_root.detected_scavenge_root(); |
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1881 } |
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1882 |
0 | 1883 // Method that knows how to preserve outgoing arguments at call. This method must be |
1884 // called with a frame corresponding to a Java invoke | |
1885 void nmethod::preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { | |
1692 | 1886 #ifndef SHARK |
0 | 1887 if (!method()->is_native()) { |
1888 SimpleScopeDesc ssd(this, fr.pc()); | |
2142 | 1889 Bytecode_invoke call(ssd.method(), ssd.bci()); |
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1890 // compiled invokedynamic call sites have an implicit receiver at |
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1891 // resolution time, so make sure it gets GC'ed. |
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1892 bool has_receiver = !call.is_invokestatic(); |
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1893 Symbol* signature = call.signature(); |
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1894 fr.oops_compiled_arguments_do(signature, has_receiver, reg_map, f); |
0 | 1895 } |
1692 | 1896 #endif // !SHARK |
0 | 1897 } |
1898 | |
1899 | |
1900 oop nmethod::embeddedOop_at(u_char* p) { | |
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1901 RelocIterator iter(this, p, p + 1); |
0 | 1902 while (iter.next()) |
1903 if (iter.type() == relocInfo::oop_type) { | |
1904 return iter.oop_reloc()->oop_value(); | |
1905 } | |
1906 return NULL; | |
1907 } | |
1908 | |
1909 | |
1910 inline bool includes(void* p, void* from, void* to) { | |
1911 return from <= p && p < to; | |
1912 } | |
1913 | |
1914 | |
1915 void nmethod::copy_scopes_pcs(PcDesc* pcs, int count) { | |
1916 assert(count >= 2, "must be sentinel values, at least"); | |
1917 | |
1918 #ifdef ASSERT | |
1919 // must be sorted and unique; we do a binary search in find_pc_desc() | |
1920 int prev_offset = pcs[0].pc_offset(); | |
1921 assert(prev_offset == PcDesc::lower_offset_limit, | |
1922 "must start with a sentinel"); | |
1923 for (int i = 1; i < count; i++) { | |
1924 int this_offset = pcs[i].pc_offset(); | |
1925 assert(this_offset > prev_offset, "offsets must be sorted"); | |
1926 prev_offset = this_offset; | |
1927 } | |
1928 assert(prev_offset == PcDesc::upper_offset_limit, | |
1929 "must end with a sentinel"); | |
1930 #endif //ASSERT | |
1931 | |
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1932 // Search for MethodHandle invokes and tag the nmethod. |
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1933 for (int i = 0; i < count; i++) { |
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1934 if (pcs[i].is_method_handle_invoke()) { |
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1935 set_has_method_handle_invokes(true); |
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1936 break; |
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1937 } |
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1938 } |
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1939 assert(has_method_handle_invokes() == (_deoptimize_mh_offset != -1), "must have deopt mh handler"); |
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1940 |
0 | 1941 int size = count * sizeof(PcDesc); |
1942 assert(scopes_pcs_size() >= size, "oob"); | |
1943 memcpy(scopes_pcs_begin(), pcs, size); | |
1944 | |
1945 // Adjust the final sentinel downward. | |
1946 PcDesc* last_pc = &scopes_pcs_begin()[count-1]; | |
1947 assert(last_pc->pc_offset() == PcDesc::upper_offset_limit, "sanity"); | |
1748 | 1948 last_pc->set_pc_offset(content_size() + 1); |
0 | 1949 for (; last_pc + 1 < scopes_pcs_end(); last_pc += 1) { |
1950 // Fill any rounding gaps with copies of the last record. | |
1951 last_pc[1] = last_pc[0]; | |
1952 } | |
1953 // The following assert could fail if sizeof(PcDesc) is not | |
1954 // an integral multiple of oopSize (the rounding term). | |
1955 // If it fails, change the logic to always allocate a multiple | |
1956 // of sizeof(PcDesc), and fill unused words with copies of *last_pc. | |
1957 assert(last_pc + 1 == scopes_pcs_end(), "must match exactly"); | |
1958 } | |
1959 | |
1960 void nmethod::copy_scopes_data(u_char* buffer, int size) { | |
1961 assert(scopes_data_size() >= size, "oob"); | |
1962 memcpy(scopes_data_begin(), buffer, size); | |
1963 } | |
1964 | |
1965 | |
1966 #ifdef ASSERT | |
1967 static PcDesc* linear_search(nmethod* nm, int pc_offset, bool approximate) { | |
1968 PcDesc* lower = nm->scopes_pcs_begin(); | |
1969 PcDesc* upper = nm->scopes_pcs_end(); | |
1970 lower += 1; // exclude initial sentinel | |
1971 PcDesc* res = NULL; | |
1972 for (PcDesc* p = lower; p < upper; p++) { | |
1973 NOT_PRODUCT(--nmethod_stats.pc_desc_tests); // don't count this call to match_desc | |
1974 if (match_desc(p, pc_offset, approximate)) { | |
1975 if (res == NULL) | |
1976 res = p; | |
1977 else | |
1978 res = (PcDesc*) badAddress; | |
1979 } | |
1980 } | |
1981 return res; | |
1982 } | |
1983 #endif | |
1984 | |
1985 | |
1986 // Finds a PcDesc with real-pc equal to "pc" | |
1987 PcDesc* nmethod::find_pc_desc_internal(address pc, bool approximate) { | |
1748 | 1988 address base_address = code_begin(); |
0 | 1989 if ((pc < base_address) || |
1990 (pc - base_address) >= (ptrdiff_t) PcDesc::upper_offset_limit) { | |
1991 return NULL; // PC is wildly out of range | |
1992 } | |
1993 int pc_offset = (int) (pc - base_address); | |
1994 | |
1995 // Check the PcDesc cache if it contains the desired PcDesc | |
1996 // (This as an almost 100% hit rate.) | |
1997 PcDesc* res = _pc_desc_cache.find_pc_desc(pc_offset, approximate); | |
1998 if (res != NULL) { | |
1999 assert(res == linear_search(this, pc_offset, approximate), "cache ok"); | |
2000 return res; | |
2001 } | |
2002 | |
2003 // Fallback algorithm: quasi-linear search for the PcDesc | |
2004 // Find the last pc_offset less than the given offset. | |
2005 // The successor must be the required match, if there is a match at all. | |
2006 // (Use a fixed radix to avoid expensive affine pointer arithmetic.) | |
2007 PcDesc* lower = scopes_pcs_begin(); | |
2008 PcDesc* upper = scopes_pcs_end(); | |
2009 upper -= 1; // exclude final sentinel | |
2010 if (lower >= upper) return NULL; // native method; no PcDescs at all | |
2011 | |
2012 #define assert_LU_OK \ | |
2013 /* invariant on lower..upper during the following search: */ \ | |
2014 assert(lower->pc_offset() < pc_offset, "sanity"); \ | |
2015 assert(upper->pc_offset() >= pc_offset, "sanity") | |
2016 assert_LU_OK; | |
2017 | |
2018 // Use the last successful return as a split point. | |
2019 PcDesc* mid = _pc_desc_cache.last_pc_desc(); | |
2020 NOT_PRODUCT(++nmethod_stats.pc_desc_searches); | |
2021 if (mid->pc_offset() < pc_offset) { | |
2022 lower = mid; | |
2023 } else { | |
2024 upper = mid; | |
2025 } | |
2026 | |
2027 // Take giant steps at first (4096, then 256, then 16, then 1) | |
2028 const int LOG2_RADIX = 4 /*smaller steps in debug mode:*/ debug_only(-1); | |
2029 const int RADIX = (1 << LOG2_RADIX); | |
2030 for (int step = (1 << (LOG2_RADIX*3)); step > 1; step >>= LOG2_RADIX) { | |
2031 while ((mid = lower + step) < upper) { | |
2032 assert_LU_OK; | |
2033 NOT_PRODUCT(++nmethod_stats.pc_desc_searches); | |
2034 if (mid->pc_offset() < pc_offset) { | |
2035 lower = mid; | |
2036 } else { | |
2037 upper = mid; | |
2038 break; | |
2039 } | |
2040 } | |
2041 assert_LU_OK; | |
2042 } | |
2043 | |
2044 // Sneak up on the value with a linear search of length ~16. | |
2045 while (true) { | |
2046 assert_LU_OK; | |
2047 mid = lower + 1; | |
2048 NOT_PRODUCT(++nmethod_stats.pc_desc_searches); | |
2049 if (mid->pc_offset() < pc_offset) { | |
2050 lower = mid; | |
2051 } else { | |
2052 upper = mid; | |
2053 break; | |
2054 } | |
2055 } | |
2056 #undef assert_LU_OK | |
2057 | |
2058 if (match_desc(upper, pc_offset, approximate)) { | |
2059 assert(upper == linear_search(this, pc_offset, approximate), "search ok"); | |
2060 _pc_desc_cache.add_pc_desc(upper); | |
2061 return upper; | |
2062 } else { | |
2063 assert(NULL == linear_search(this, pc_offset, approximate), "search ok"); | |
2064 return NULL; | |
2065 } | |
2066 } | |
2067 | |
2068 | |
2069 bool nmethod::check_all_dependencies() { | |
2070 bool found_check = false; | |
2071 // wholesale check of all dependencies | |
2072 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
2073 if (deps.check_dependency() != NULL) { | |
2074 found_check = true; | |
2075 NOT_DEBUG(break); | |
2076 } | |
2077 } | |
2078 return found_check; // tell caller if we found anything | |
2079 } | |
2080 | |
2081 bool nmethod::check_dependency_on(DepChange& changes) { | |
2082 // What has happened: | |
2083 // 1) a new class dependee has been added | |
2084 // 2) dependee and all its super classes have been marked | |
2085 bool found_check = false; // set true if we are upset | |
2086 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
2087 // Evaluate only relevant dependencies. | |
2088 if (deps.spot_check_dependency_at(changes) != NULL) { | |
2089 found_check = true; | |
2090 NOT_DEBUG(break); | |
2091 } | |
2092 } | |
2093 return found_check; | |
2094 } | |
2095 | |
2096 bool nmethod::is_evol_dependent_on(klassOop dependee) { | |
2097 instanceKlass *dependee_ik = instanceKlass::cast(dependee); | |
2098 objArrayOop dependee_methods = dependee_ik->methods(); | |
2099 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
2100 if (deps.type() == Dependencies::evol_method) { | |
2101 methodOop method = deps.method_argument(0); | |
2102 for (int j = 0; j < dependee_methods->length(); j++) { | |
2103 if ((methodOop) dependee_methods->obj_at(j) == method) { | |
2104 // RC_TRACE macro has an embedded ResourceMark | |
2105 RC_TRACE(0x01000000, | |
2106 ("Found evol dependency of nmethod %s.%s(%s) compile_id=%d on method %s.%s(%s)", | |
2107 _method->method_holder()->klass_part()->external_name(), | |
2108 _method->name()->as_C_string(), | |
2109 _method->signature()->as_C_string(), compile_id(), | |
2110 method->method_holder()->klass_part()->external_name(), | |
2111 method->name()->as_C_string(), | |
2112 method->signature()->as_C_string())); | |
2113 if (TraceDependencies || LogCompilation) | |
2114 deps.log_dependency(dependee); | |
2115 return true; | |
2116 } | |
2117 } | |
2118 } | |
2119 } | |
2120 return false; | |
2121 } | |
2122 | |
2123 // Called from mark_for_deoptimization, when dependee is invalidated. | |
2124 bool nmethod::is_dependent_on_method(methodOop dependee) { | |
2125 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
2126 if (deps.type() != Dependencies::evol_method) | |
2127 continue; | |
2128 methodOop method = deps.method_argument(0); | |
2129 if (method == dependee) return true; | |
2130 } | |
2131 return false; | |
2132 } | |
2133 | |
2134 | |
2135 bool nmethod::is_patchable_at(address instr_addr) { | |
1748 | 2136 assert(insts_contains(instr_addr), "wrong nmethod used"); |
0 | 2137 if (is_zombie()) { |
2138 // a zombie may never be patched | |
2139 return false; | |
2140 } | |
2141 return true; | |
2142 } | |
2143 | |
2144 | |
2145 address nmethod::continuation_for_implicit_exception(address pc) { | |
2146 // Exception happened outside inline-cache check code => we are inside | |
2147 // an active nmethod => use cpc to determine a return address | |
1748 | 2148 int exception_offset = pc - code_begin(); |
0 | 2149 int cont_offset = ImplicitExceptionTable(this).at( exception_offset ); |
2150 #ifdef ASSERT | |
2151 if (cont_offset == 0) { | |
2152 Thread* thread = ThreadLocalStorage::get_thread_slow(); | |
2153 ResetNoHandleMark rnm; // Might be called from LEAF/QUICK ENTRY | |
2154 HandleMark hm(thread); | |
2155 ResourceMark rm(thread); | |
2156 CodeBlob* cb = CodeCache::find_blob(pc); | |
2157 assert(cb != NULL && cb == this, ""); | |
2158 tty->print_cr("implicit exception happened at " INTPTR_FORMAT, pc); | |
2159 print(); | |
2160 method()->print_codes(); | |
2161 print_code(); | |
2162 print_pcs(); | |
2163 } | |
2164 #endif | |
1250 | 2165 if (cont_offset == 0) { |
2166 // Let the normal error handling report the exception | |
2167 return NULL; | |
2168 } | |
1748 | 2169 return code_begin() + cont_offset; |
0 | 2170 } |
2171 | |
2172 | |
2173 | |
2174 void nmethod_init() { | |
2175 // make sure you didn't forget to adjust the filler fields | |
2176 assert(sizeof(nmethod) % oopSize == 0, "nmethod size must be multiple of a word"); | |
2177 } | |
2178 | |
2179 | |
2180 //------------------------------------------------------------------------------------------- | |
2181 | |
2182 | |
2183 // QQQ might we make this work from a frame?? | |
2184 nmethodLocker::nmethodLocker(address pc) { | |
2185 CodeBlob* cb = CodeCache::find_blob(pc); | |
2186 guarantee(cb != NULL && cb->is_nmethod(), "bad pc for a nmethod found"); | |
2187 _nm = (nmethod*)cb; | |
2188 lock_nmethod(_nm); | |
2189 } | |
2190 | |
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2191 // Only JvmtiDeferredEvent::compiled_method_unload_event() |
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2192 // should pass zombie_ok == true. |
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2193 void nmethodLocker::lock_nmethod(nmethod* nm, bool zombie_ok) { |
0 | 2194 if (nm == NULL) return; |
2195 Atomic::inc(&nm->_lock_count); | |
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2196 guarantee(zombie_ok || !nm->is_zombie(), "cannot lock a zombie method"); |
0 | 2197 } |
2198 | |
2199 void nmethodLocker::unlock_nmethod(nmethod* nm) { | |
2200 if (nm == NULL) return; | |
2201 Atomic::dec(&nm->_lock_count); | |
2202 guarantee(nm->_lock_count >= 0, "unmatched nmethod lock/unlock"); | |
2203 } | |
2204 | |
1204 | 2205 |
2206 // ----------------------------------------------------------------------------- | |
2207 // nmethod::get_deopt_original_pc | |
2208 // | |
2209 // Return the original PC for the given PC if: | |
2210 // (a) the given PC belongs to a nmethod and | |
2211 // (b) it is a deopt PC | |
2212 address nmethod::get_deopt_original_pc(const frame* fr) { | |
2213 if (fr->cb() == NULL) return NULL; | |
2214 | |
2215 nmethod* nm = fr->cb()->as_nmethod_or_null(); | |
2216 if (nm != NULL && nm->is_deopt_pc(fr->pc())) | |
2217 return nm->get_original_pc(fr); | |
2218 | |
2219 return NULL; | |
0 | 2220 } |
2221 | |
2222 | |
2223 // ----------------------------------------------------------------------------- | |
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2224 // MethodHandle |
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2225 |
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2226 bool nmethod::is_method_handle_return(address return_pc) { |
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2227 if (!has_method_handle_invokes()) return false; |
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2228 PcDesc* pd = pc_desc_at(return_pc); |
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2229 if (pd == NULL) |
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|
2230 return false; |
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2231 return pd->is_method_handle_invoke(); |
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1109
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|
2232 } |
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|
2233 |
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|
2234 |
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|
2235 // ----------------------------------------------------------------------------- |
0 | 2236 // Verification |
2237 | |
989
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2238 class VerifyOopsClosure: public OopClosure { |
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|
2239 nmethod* _nm; |
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|
2240 bool _ok; |
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|
2241 public: |
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2242 VerifyOopsClosure(nmethod* nm) : _nm(nm), _ok(true) { } |
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|
2243 bool ok() { return _ok; } |
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|
2244 virtual void do_oop(oop* p) { |
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2245 if ((*p) == NULL || (*p)->is_oop()) return; |
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|
2246 if (_ok) { |
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|
2247 _nm->print_nmethod(true); |
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|
2248 _ok = false; |
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|
2249 } |
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|
2250 tty->print_cr("*** non-oop "PTR_FORMAT" found at "PTR_FORMAT" (offset %d)", |
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|
2251 (intptr_t)(*p), (intptr_t)p, (int)((intptr_t)p - (intptr_t)_nm)); |
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|
2252 } |
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|
2253 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
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|
2254 }; |
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|
2255 |
0 | 2256 void nmethod::verify() { |
2257 | |
2258 // Hmm. OSR methods can be deopted but not marked as zombie or not_entrant | |
2259 // seems odd. | |
2260 | |
2261 if( is_zombie() || is_not_entrant() ) | |
2262 return; | |
2263 | |
2264 // Make sure all the entry points are correctly aligned for patching. | |
2265 NativeJump::check_verified_entry_alignment(entry_point(), verified_entry_point()); | |
2266 | |
2267 assert(method()->is_oop(), "must be valid"); | |
2268 | |
2269 ResourceMark rm; | |
2270 | |
2271 if (!CodeCache::contains(this)) { | |
1490
f03d0a26bf83
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jcoomes
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changeset
|
2272 fatal(err_msg("nmethod at " INTPTR_FORMAT " not in zone", this)); |
0 | 2273 } |
2274 | |
2275 if(is_native_method() ) | |
2276 return; | |
2277 | |
2278 nmethod* nm = CodeCache::find_nmethod(verified_entry_point()); | |
2279 if (nm != this) { | |
1490
f03d0a26bf83
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jcoomes
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|
2280 fatal(err_msg("findNMethod did not find this nmethod (" INTPTR_FORMAT ")", |
f03d0a26bf83
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jcoomes
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diff
changeset
|
2281 this)); |
0 | 2282 } |
2283 | |
2284 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
2285 if (! p->verify(this)) { | |
2286 tty->print_cr("\t\tin nmethod at " INTPTR_FORMAT " (pcs)", this); | |
2287 } | |
2288 } | |
2289 | |
989
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|
2290 VerifyOopsClosure voc(this); |
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|
2291 oops_do(&voc); |
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|
2292 assert(voc.ok(), "embedded oops must be OK"); |
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|
2293 verify_scavenge_root_oops(); |
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|
2294 |
0 | 2295 verify_scopes(); |
2296 } | |
2297 | |
2298 | |
2299 void nmethod::verify_interrupt_point(address call_site) { | |
2300 // This code does not work in release mode since | |
2301 // owns_lock only is available in debug mode. | |
2302 CompiledIC* ic = NULL; | |
2303 Thread *cur = Thread::current(); | |
2304 if (CompiledIC_lock->owner() == cur || | |
2305 ((cur->is_VM_thread() || cur->is_ConcurrentGC_thread()) && | |
2306 SafepointSynchronize::is_at_safepoint())) { | |
2307 ic = CompiledIC_at(call_site); | |
2308 CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops()); | |
2309 } else { | |
2310 MutexLocker ml_verify (CompiledIC_lock); | |
2311 ic = CompiledIC_at(call_site); | |
2312 } | |
2313 PcDesc* pd = pc_desc_at(ic->end_of_call()); | |
2314 assert(pd != NULL, "PcDesc must exist"); | |
2315 for (ScopeDesc* sd = new ScopeDesc(this, pd->scope_decode_offset(), | |
3018
5857923e563c
Fixed an issue with frame states in exception dispatch chains (now we are correctly rethrowing the exception immediately at entering the interpreter).
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
2891
diff
changeset
|
2316 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
|
2317 pd->return_oop()); |
0 | 2318 !sd->is_top(); sd = sd->sender()) { |
2319 sd->verify(); | |
2320 } | |
2321 } | |
2322 | |
2323 void nmethod::verify_scopes() { | |
2324 if( !method() ) return; // Runtime stubs have no scope | |
2325 if (method()->is_native()) return; // Ignore stub methods. | |
2326 // iterate through all interrupt point | |
2327 // and verify the debug information is valid. | |
2328 RelocIterator iter((nmethod*)this); | |
2329 while (iter.next()) { | |
2330 address stub = NULL; | |
2331 switch (iter.type()) { | |
2332 case relocInfo::virtual_call_type: | |
2333 verify_interrupt_point(iter.addr()); | |
2334 break; | |
2335 case relocInfo::opt_virtual_call_type: | |
2336 stub = iter.opt_virtual_call_reloc()->static_stub(); | |
2337 verify_interrupt_point(iter.addr()); | |
2338 break; | |
2339 case relocInfo::static_call_type: | |
2340 stub = iter.static_call_reloc()->static_stub(); | |
2341 //verify_interrupt_point(iter.addr()); | |
2342 break; | |
2343 case relocInfo::runtime_call_type: | |
2344 address destination = iter.reloc()->value(); | |
2345 // Right now there is no way to find out which entries support | |
2346 // an interrupt point. It would be nice if we had this | |
2347 // information in a table. | |
2348 break; | |
2349 } | |
2891
75a99b4f1c98
Rebranded C++ part from C1X to Graal.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
2491
diff
changeset
|
2350 assert(UseGraal || stub == NULL || stub_contains(stub), "static call stub outside stub section"); |
0 | 2351 } |
2352 } | |
2353 | |
2354 | |
2355 // ----------------------------------------------------------------------------- | |
2356 // Non-product code | |
2357 #ifndef PRODUCT | |
2358 | |
989
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931
diff
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|
2359 class DebugScavengeRoot: public OopClosure { |
148e5441d916
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jrose
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931
diff
changeset
|
2360 nmethod* _nm; |
148e5441d916
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jrose
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931
diff
changeset
|
2361 bool _ok; |
148e5441d916
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jrose
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931
diff
changeset
|
2362 public: |
148e5441d916
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jrose
parents:
931
diff
changeset
|
2363 DebugScavengeRoot(nmethod* nm) : _nm(nm), _ok(true) { } |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2364 bool ok() { return _ok; } |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2365 virtual void do_oop(oop* p) { |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2366 if ((*p) == NULL || !(*p)->is_scavengable()) return; |
148e5441d916
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jrose
parents:
931
diff
changeset
|
2367 if (_ok) { |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2368 _nm->print_nmethod(true); |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2369 _ok = false; |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2370 } |
3377
2aa9ddbb9e60
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
2405
diff
changeset
|
2371 tty->print_cr("*** scavengable oop "PTR_FORMAT" found at "PTR_FORMAT" (offset %d)", |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2372 (intptr_t)(*p), (intptr_t)p, (int)((intptr_t)p - (intptr_t)_nm)); |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2373 (*p)->print(); |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2374 } |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2375 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2376 }; |
0 | 2377 |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2378 void nmethod::verify_scavenge_root_oops() { |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2379 if (!on_scavenge_root_list()) { |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2380 // Actually look inside, to verify the claim that it's clean. |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2381 DebugScavengeRoot debug_scavenge_root(this); |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2382 oops_do(&debug_scavenge_root); |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2383 if (!debug_scavenge_root.ok()) |
3377
2aa9ddbb9e60
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
2405
diff
changeset
|
2384 fatal("found an unadvertised bad scavengable oop in the code cache"); |
0 | 2385 } |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2386 assert(scavenge_root_not_marked(), ""); |
0 | 2387 } |
2388 | |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
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30
diff
changeset
|
2389 #endif // PRODUCT |
0 | 2390 |
2391 // Printing operations | |
2392 | |
2393 void nmethod::print() const { | |
2394 ResourceMark rm; | |
2395 ttyLocker ttyl; // keep the following output all in one block | |
2396 | |
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2376
diff
changeset
|
2397 tty->print("Compiled method "); |
0 | 2398 |
2399 if (is_compiled_by_c1()) { | |
2400 tty->print("(c1) "); | |
2401 } else if (is_compiled_by_c2()) { | |
2402 tty->print("(c2) "); | |
1692 | 2403 } else if (is_compiled_by_shark()) { |
2404 tty->print("(shark) "); | |
0 | 2405 } else { |
2406 tty->print("(nm) "); | |
2407 } | |
2408 | |
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2376
diff
changeset
|
2409 print_on(tty, NULL); |
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2376
diff
changeset
|
2410 |
0 | 2411 if (WizardMode) { |
2412 tty->print("((nmethod*) "INTPTR_FORMAT ") ", this); | |
2413 tty->print(" for method " INTPTR_FORMAT , (address)method()); | |
2414 tty->print(" { "); | |
2415 if (is_in_use()) tty->print("in_use "); | |
2416 if (is_not_entrant()) tty->print("not_entrant "); | |
2417 if (is_zombie()) tty->print("zombie "); | |
2418 if (is_unloaded()) tty->print("unloaded "); | |
989
148e5441d916
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jrose
parents:
931
diff
changeset
|
2419 if (on_scavenge_root_list()) tty->print("scavenge_root "); |
0 | 2420 tty->print_cr("}:"); |
2421 } | |
2422 if (size () > 0) tty->print_cr(" total in heap [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2423 (address)this, | |
2424 (address)this + size(), | |
2425 size()); | |
2426 if (relocation_size () > 0) tty->print_cr(" relocation [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2427 relocation_begin(), | |
2428 relocation_end(), | |
2429 relocation_size()); | |
1762
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
2430 if (consts_size () > 0) tty->print_cr(" constants [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
2431 consts_begin(), |
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
2432 consts_end(), |
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
2433 consts_size()); |
1748 | 2434 if (insts_size () > 0) tty->print_cr(" main code [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
2435 insts_begin(), | |
2436 insts_end(), | |
2437 insts_size()); | |
0 | 2438 if (stub_size () > 0) tty->print_cr(" stub code [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
2439 stub_begin(), | |
2440 stub_end(), | |
2441 stub_size()); | |
1563
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
1538
diff
changeset
|
2442 if (oops_size () > 0) tty->print_cr(" oops [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
1538
diff
changeset
|
2443 oops_begin(), |
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
1538
diff
changeset
|
2444 oops_end(), |
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
1538
diff
changeset
|
2445 oops_size()); |
0 | 2446 if (scopes_data_size () > 0) tty->print_cr(" scopes data [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
2447 scopes_data_begin(), | |
2448 scopes_data_end(), | |
2449 scopes_data_size()); | |
2450 if (scopes_pcs_size () > 0) tty->print_cr(" scopes pcs [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2451 scopes_pcs_begin(), | |
2452 scopes_pcs_end(), | |
2453 scopes_pcs_size()); | |
2454 if (dependencies_size () > 0) tty->print_cr(" dependencies [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2455 dependencies_begin(), | |
2456 dependencies_end(), | |
2457 dependencies_size()); | |
2458 if (handler_table_size() > 0) tty->print_cr(" handler table [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2459 handler_table_begin(), | |
2460 handler_table_end(), | |
2461 handler_table_size()); | |
2462 if (nul_chk_table_size() > 0) tty->print_cr(" nul chk table [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2463 nul_chk_table_begin(), | |
2464 nul_chk_table_end(), | |
2465 nul_chk_table_size()); | |
2466 } | |
2467 | |
100
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30
diff
changeset
|
2468 void nmethod::print_code() { |
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
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30
diff
changeset
|
2469 HandleMark hm; |
c7c777385a15
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jrose
parents:
30
diff
changeset
|
2470 ResourceMark m; |
c7c777385a15
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jrose
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30
diff
changeset
|
2471 Disassembler::decode(this); |
c7c777385a15
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jrose
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30
diff
changeset
|
2472 } |
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30
diff
changeset
|
2473 |
c7c777385a15
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diff
changeset
|
2474 |
c7c777385a15
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30
diff
changeset
|
2475 #ifndef PRODUCT |
0 | 2476 |
2477 void nmethod::print_scopes() { | |
2478 // Find the first pc desc for all scopes in the code and print it. | |
2479 ResourceMark rm; | |
2480 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
2481 if (p->scope_decode_offset() == DebugInformationRecorder::serialized_null) | |
2482 continue; | |
2483 | |
2484 ScopeDesc* sd = scope_desc_at(p->real_pc(this)); | |
2485 sd->print_on(tty, p); | |
2486 } | |
2487 } | |
2488 | |
2489 void nmethod::print_dependencies() { | |
2490 ResourceMark rm; | |
2491 ttyLocker ttyl; // keep the following output all in one block | |
2492 tty->print_cr("Dependencies:"); | |
2493 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
2494 deps.print_dependency(); | |
2495 klassOop ctxk = deps.context_type(); | |
2496 if (ctxk != NULL) { | |
2497 Klass* k = Klass::cast(ctxk); | |
2498 if (k->oop_is_instance() && ((instanceKlass*)k)->is_dependent_nmethod(this)) { | |
30 | 2499 tty->print_cr(" [nmethod<=klass]%s", k->external_name()); |
0 | 2500 } |
2501 } | |
2502 deps.log_dependency(); // put it into the xml log also | |
2503 } | |
2504 } | |
2505 | |
2506 | |
2507 void nmethod::print_relocations() { | |
2508 ResourceMark m; // in case methods get printed via the debugger | |
2509 tty->print_cr("relocations:"); | |
2510 RelocIterator iter(this); | |
2511 iter.print(); | |
2512 if (UseRelocIndex) { | |
2513 jint* index_end = (jint*)relocation_end() - 1; | |
2514 jint index_size = *index_end; | |
2515 jint* index_start = (jint*)( (address)index_end - index_size ); | |
2516 tty->print_cr(" index @" INTPTR_FORMAT ": index_size=%d", index_start, index_size); | |
2517 if (index_size > 0) { | |
2518 jint* ip; | |
2519 for (ip = index_start; ip+2 <= index_end; ip += 2) | |
2520 tty->print_cr(" (%d %d) addr=" INTPTR_FORMAT " @" INTPTR_FORMAT, | |
2521 ip[0], | |
2522 ip[1], | |
2523 header_end()+ip[0], | |
2524 relocation_begin()-1+ip[1]); | |
2525 for (; ip < index_end; ip++) | |
2526 tty->print_cr(" (%d ?)", ip[0]); | |
2527 tty->print_cr(" @" INTPTR_FORMAT ": index_size=%d", ip, *ip++); | |
2528 tty->print_cr("reloc_end @" INTPTR_FORMAT ":", ip); | |
2529 } | |
2530 } | |
2531 } | |
2532 | |
2533 | |
2534 void nmethod::print_pcs() { | |
2535 ResourceMark m; // in case methods get printed via debugger | |
2536 tty->print_cr("pc-bytecode offsets:"); | |
2537 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
2538 p->print(this); | |
2539 } | |
2540 } | |
2541 | |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2542 #endif // PRODUCT |
0 | 2543 |
2544 const char* nmethod::reloc_string_for(u_char* begin, u_char* end) { | |
2545 RelocIterator iter(this, begin, end); | |
2546 bool have_one = false; | |
2547 while (iter.next()) { | |
2548 have_one = true; | |
2549 switch (iter.type()) { | |
2550 case relocInfo::none: return "no_reloc"; | |
2551 case relocInfo::oop_type: { | |
2552 stringStream st; | |
2553 oop_Relocation* r = iter.oop_reloc(); | |
2554 oop obj = r->oop_value(); | |
2555 st.print("oop("); | |
2556 if (obj == NULL) st.print("NULL"); | |
2557 else obj->print_value_on(&st); | |
2558 st.print(")"); | |
2559 return st.as_string(); | |
2560 } | |
2561 case relocInfo::virtual_call_type: return "virtual_call"; | |
2562 case relocInfo::opt_virtual_call_type: return "optimized virtual_call"; | |
2563 case relocInfo::static_call_type: return "static_call"; | |
2564 case relocInfo::static_stub_type: return "static_stub"; | |
2565 case relocInfo::runtime_call_type: return "runtime_call"; | |
2566 case relocInfo::external_word_type: return "external_word"; | |
2567 case relocInfo::internal_word_type: return "internal_word"; | |
2568 case relocInfo::section_word_type: return "section_word"; | |
2569 case relocInfo::poll_type: return "poll"; | |
2570 case relocInfo::poll_return_type: return "poll_return"; | |
2571 case relocInfo::type_mask: return "type_bit_mask"; | |
2572 } | |
2573 } | |
2574 return have_one ? "other" : NULL; | |
2575 } | |
2576 | |
2577 // Return a the last scope in (begin..end] | |
2578 ScopeDesc* nmethod::scope_desc_in(address begin, address end) { | |
2579 PcDesc* p = pc_desc_near(begin+1); | |
2580 if (p != NULL && p->real_pc(this) <= end) { | |
2581 return new ScopeDesc(this, p->scope_decode_offset(), | |
3018
5857923e563c
Fixed an issue with frame states in exception dispatch chains (now we are correctly rethrowing the exception immediately at entering the interpreter).
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
2891
diff
changeset
|
2582 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
|
2583 p->return_oop()); |
0 | 2584 } |
2585 return NULL; | |
2586 } | |
2587 | |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2588 void nmethod::print_nmethod_labels(outputStream* stream, address block_begin) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2589 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
|
2590 if (block_begin == verified_entry_point()) stream->print_cr("[Verified Entry Point]"); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2591 if (block_begin == exception_begin()) stream->print_cr("[Exception Handler]"); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2592 if (block_begin == stub_begin()) stream->print_cr("[Stub Code]"); |
1204 | 2593 if (block_begin == deopt_handler_begin()) stream->print_cr("[Deopt Handler Code]"); |
1691
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
twisti
parents:
1644
diff
changeset
|
2594 |
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
twisti
parents:
1644
diff
changeset
|
2595 if (has_method_handle_invokes()) |
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
twisti
parents:
1644
diff
changeset
|
2596 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
|
2597 |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2598 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
|
2599 |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2600 if (block_begin == entry_point()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2601 methodHandle m = method(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2602 if (m.not_null()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2603 stream->print(" # "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2604 m->print_value_on(stream); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2605 stream->cr(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2606 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2607 if (m.not_null() && !is_osr_method()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2608 ResourceMark rm; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2609 int sizeargs = m->size_of_parameters(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2610 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
|
2611 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, sizeargs); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2612 { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2613 int sig_index = 0; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2614 if (!m->is_static()) |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2615 sig_bt[sig_index++] = T_OBJECT; // 'this' |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2616 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
|
2617 BasicType t = ss.type(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2618 sig_bt[sig_index++] = t; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2619 if (type2size[t] == 2) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2620 sig_bt[sig_index++] = T_VOID; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2621 } else { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2622 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
|
2623 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2624 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2625 assert(sig_index == sizeargs, ""); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2626 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2627 const char* spname = "sp"; // make arch-specific? |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2628 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
|
2629 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
|
2630 int tab1 = 14, tab2 = 24; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2631 int sig_index = 0; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2632 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
|
2633 bool did_old_sp = false; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2634 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
|
2635 bool at_this = (arg_index == -1); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2636 bool at_old_sp = false; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2637 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
|
2638 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
|
2639 if (at_this) |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2640 stream->print(" # this: "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2641 else |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2642 stream->print(" # parm%d: ", arg_index); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2643 stream->move_to(tab1); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2644 VMReg fst = regs[sig_index].first(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2645 VMReg snd = regs[sig_index].second(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2646 if (fst->is_reg()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2647 stream->print("%s", fst->name()); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2648 if (snd->is_valid()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2649 stream->print(":%s", snd->name()); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2650 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2651 } else if (fst->is_stack()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2652 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
|
2653 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
|
2654 stream->print("[%s+0x%x]", spname, offset); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2655 } else { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2656 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
|
2657 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2658 stream->print(" "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2659 stream->move_to(tab2); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2660 stream->print("= "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2661 if (at_this) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2662 m->method_holder()->print_value_on(stream); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2663 } else { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2664 bool did_name = false; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2665 if (!at_this && ss.is_object()) { |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2142
diff
changeset
|
2666 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
|
2667 if (name != NULL) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2668 name->print_value_on(stream); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2669 did_name = true; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2670 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2671 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2672 if (!did_name) |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2673 stream->print("%s", type2name(t)); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2674 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2675 if (at_old_sp) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2676 stream->print(" (%s of caller)", spname); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2677 did_old_sp = true; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2678 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2679 stream->cr(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2680 sig_index += type2size[t]; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2681 arg_index += 1; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2682 if (!at_this) ss.next(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2683 } |
4e6abf09f540
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2684 if (!did_old_sp) { |
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2685 stream->print(" # "); |
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2686 stream->move_to(tab1); |
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2687 stream->print("[%s+0x%x]", spname, stack_slot_offset); |
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2688 stream->print(" (%s of caller)", spname); |
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2689 stream->cr(); |
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2690 } |
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2691 } |
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2692 } |
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2693 } |
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2694 |
0 | 2695 void nmethod::print_code_comment_on(outputStream* st, int column, u_char* begin, u_char* end) { |
2696 // First, find an oopmap in (begin, end]. | |
2697 // We use the odd half-closed interval so that oop maps and scope descs | |
2698 // which are tied to the byte after a call are printed with the call itself. | |
1748 | 2699 address base = code_begin(); |
0 | 2700 OopMapSet* oms = oop_maps(); |
2701 if (oms != NULL) { | |
2702 for (int i = 0, imax = oms->size(); i < imax; i++) { | |
2703 OopMap* om = oms->at(i); | |
2704 address pc = base + om->offset(); | |
2705 if (pc > begin) { | |
2706 if (pc <= end) { | |
100
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2707 st->move_to(column); |
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2708 st->print("; "); |
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2709 om->print_on(st); |
0 | 2710 } |
2711 break; | |
2712 } | |
2713 } | |
2714 } | |
100
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2715 |
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2716 // Print any debug info present at this pc. |
0 | 2717 ScopeDesc* sd = scope_desc_in(begin, end); |
2718 if (sd != NULL) { | |
100
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2719 st->move_to(column); |
0 | 2720 if (sd->bci() == SynchronizationEntryBCI) { |
2721 st->print(";*synchronization entry"); | |
2722 } else { | |
2723 if (sd->method().is_null()) { | |
100
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2724 st->print("method is NULL"); |
0 | 2725 } else if (sd->method()->is_native()) { |
100
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2726 st->print("method is native"); |
0 | 2727 } else { |
2142 | 2728 Bytecodes::Code bc = sd->method()->java_code_at(sd->bci()); |
0 | 2729 st->print(";*%s", Bytecodes::name(bc)); |
2730 switch (bc) { | |
2731 case Bytecodes::_invokevirtual: | |
2732 case Bytecodes::_invokespecial: | |
2733 case Bytecodes::_invokestatic: | |
2734 case Bytecodes::_invokeinterface: | |
2735 { | |
2142 | 2736 Bytecode_invoke invoke(sd->method(), sd->bci()); |
0 | 2737 st->print(" "); |
2142 | 2738 if (invoke.name() != NULL) |
2739 invoke.name()->print_symbol_on(st); | |
0 | 2740 else |
2741 st->print("<UNKNOWN>"); | |
2742 break; | |
2743 } | |
2744 case Bytecodes::_getfield: | |
2745 case Bytecodes::_putfield: | |
2746 case Bytecodes::_getstatic: | |
2747 case Bytecodes::_putstatic: | |
2748 { | |
2142 | 2749 Bytecode_field field(sd->method(), sd->bci()); |
0 | 2750 st->print(" "); |
2142 | 2751 if (field.name() != NULL) |
2752 field.name()->print_symbol_on(st); | |
0 | 2753 else |
2754 st->print("<UNKNOWN>"); | |
2755 } | |
2756 } | |
2757 } | |
2758 } | |
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2759 |
0 | 2760 // Print all scopes |
2761 for (;sd != NULL; sd = sd->sender()) { | |
100
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2762 st->move_to(column); |
0 | 2763 st->print("; -"); |
2764 if (sd->method().is_null()) { | |
100
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2765 st->print("method is NULL"); |
0 | 2766 } else { |
2767 sd->method()->print_short_name(st); | |
2768 } | |
2769 int lineno = sd->method()->line_number_from_bci(sd->bci()); | |
2770 if (lineno != -1) { | |
2771 st->print("@%d (line %d)", sd->bci(), lineno); | |
2772 } else { | |
2773 st->print("@%d", sd->bci()); | |
2774 } | |
2775 st->cr(); | |
2776 } | |
2777 } | |
2778 | |
2779 // Print relocation information | |
2780 const char* str = reloc_string_for(begin, end); | |
2781 if (str != NULL) { | |
2782 if (sd != NULL) st->cr(); | |
100
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2783 st->move_to(column); |
0 | 2784 st->print("; {%s}", str); |
2785 } | |
1748 | 2786 int cont_offset = ImplicitExceptionTable(this).at(begin - code_begin()); |
0 | 2787 if (cont_offset != 0) { |
100
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2788 st->move_to(column); |
1748 | 2789 st->print("; implicit exception: dispatches to " INTPTR_FORMAT, code_begin() + cont_offset); |
0 | 2790 } |
2791 | |
2792 } | |
2793 | |
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2794 #ifndef PRODUCT |
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2795 |
0 | 2796 void nmethod::print_value_on(outputStream* st) const { |
2405
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2797 st->print("nmethod"); |
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2798 print_on(st, NULL); |
0 | 2799 } |
2800 | |
2801 void nmethod::print_calls(outputStream* st) { | |
2802 RelocIterator iter(this); | |
2803 while (iter.next()) { | |
2804 switch (iter.type()) { | |
2805 case relocInfo::virtual_call_type: | |
2806 case relocInfo::opt_virtual_call_type: { | |
2807 VerifyMutexLocker mc(CompiledIC_lock); | |
2808 CompiledIC_at(iter.reloc())->print(); | |
2809 break; | |
2810 } | |
2811 case relocInfo::static_call_type: | |
2812 st->print_cr("Static call at " INTPTR_FORMAT, iter.reloc()->addr()); | |
2813 compiledStaticCall_at(iter.reloc())->print(); | |
2814 break; | |
2815 } | |
2816 } | |
2817 } | |
2818 | |
2819 void nmethod::print_handler_table() { | |
2820 ExceptionHandlerTable(this).print(); | |
2821 } | |
2822 | |
2823 void nmethod::print_nul_chk_table() { | |
1748 | 2824 ImplicitExceptionTable(this).print(code_begin()); |
0 | 2825 } |
2826 | |
2827 void nmethod::print_statistics() { | |
2828 ttyLocker ttyl; | |
2829 if (xtty != NULL) xtty->head("statistics type='nmethod'"); | |
2830 nmethod_stats.print_native_nmethod_stats(); | |
2831 nmethod_stats.print_nmethod_stats(); | |
2832 DebugInformationRecorder::print_statistics(); | |
2833 nmethod_stats.print_pc_stats(); | |
2834 Dependencies::print_statistics(); | |
2835 if (xtty != NULL) xtty->tail("statistics"); | |
2836 } | |
2837 | |
2838 #endif // PRODUCT |