Mercurial > hg > truffle
annotate src/share/vm/code/nmethod.cpp @ 10504:0eeb9f8dab9b
Ignore testBoxedBooleanAOT test
author | Christos Kotselidis <christos.kotselidis@oracle.com> |
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date | Mon, 24 Jun 2013 10:22:28 +0200 |
parents | 836a62f43af9 |
children | 3489047ffea2 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "code/codeCache.hpp" | |
27 #include "code/compiledIC.hpp" | |
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28 #include "code/dependencies.hpp" |
1972 | 29 #include "code/nmethod.hpp" |
30 #include "code/scopeDesc.hpp" | |
31 #include "compiler/abstractCompiler.hpp" | |
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32 #include "compiler/compileBroker.hpp" |
1972 | 33 #include "compiler/compileLog.hpp" |
34 #include "compiler/compilerOracle.hpp" | |
35 #include "compiler/disassembler.hpp" | |
36 #include "interpreter/bytecode.hpp" | |
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37 #include "oops/methodData.hpp" |
1972 | 38 #include "prims/jvmtiRedefineClassesTrace.hpp" |
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39 #include "prims/jvmtiImpl.hpp" |
1972 | 40 #include "runtime/sharedRuntime.hpp" |
41 #include "runtime/sweeper.hpp" | |
42 #include "utilities/dtrace.hpp" | |
43 #include "utilities/events.hpp" | |
44 #include "utilities/xmlstream.hpp" | |
45 #ifdef SHARK | |
46 #include "shark/sharkCompiler.hpp" | |
47 #endif | |
9707 | 48 #ifdef GRAAL |
49 #include "graal/graalJavaAccess.hpp" | |
50 #endif | |
0 | 51 |
52 #ifdef DTRACE_ENABLED | |
53 | |
54 // Only bother with this argument setup if dtrace is available | |
55 | |
4006 | 56 #ifndef USDT2 |
0 | 57 HS_DTRACE_PROBE_DECL8(hotspot, compiled__method__load, |
58 const char*, int, const char*, int, const char*, int, void*, size_t); | |
59 | |
60 HS_DTRACE_PROBE_DECL6(hotspot, compiled__method__unload, | |
61 char*, int, char*, int, char*, int); | |
62 | |
63 #define DTRACE_METHOD_UNLOAD_PROBE(method) \ | |
64 { \ | |
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65 Method* m = (method); \ |
0 | 66 if (m != NULL) { \ |
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67 Symbol* klass_name = m->klass_name(); \ |
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68 Symbol* name = m->name(); \ |
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69 Symbol* signature = m->signature(); \ |
0 | 70 HS_DTRACE_PROBE6(hotspot, compiled__method__unload, \ |
71 klass_name->bytes(), klass_name->utf8_length(), \ | |
72 name->bytes(), name->utf8_length(), \ | |
73 signature->bytes(), signature->utf8_length()); \ | |
74 } \ | |
75 } | |
4006 | 76 #else /* USDT2 */ |
77 #define DTRACE_METHOD_UNLOAD_PROBE(method) \ | |
78 { \ | |
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79 Method* m = (method); \ |
4006 | 80 if (m != NULL) { \ |
81 Symbol* klass_name = m->klass_name(); \ | |
82 Symbol* name = m->name(); \ | |
83 Symbol* signature = m->signature(); \ | |
84 HOTSPOT_COMPILED_METHOD_UNLOAD( \ | |
85 (char *) klass_name->bytes(), klass_name->utf8_length(), \ | |
86 (char *) name->bytes(), name->utf8_length(), \ | |
87 (char *) signature->bytes(), signature->utf8_length()); \ | |
88 } \ | |
89 } | |
90 #endif /* USDT2 */ | |
0 | 91 |
92 #else // ndef DTRACE_ENABLED | |
93 | |
94 #define DTRACE_METHOD_UNLOAD_PROBE(method) | |
95 | |
96 #endif | |
97 | |
98 bool nmethod::is_compiled_by_c1() const { | |
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99 if (compiler() == NULL || method() == NULL) return false; // can happen during debug printing |
0 | 100 if (is_native_method()) return false; |
101 return compiler()->is_c1(); | |
102 } | |
9707 | 103 bool nmethod::is_compiled_by_graal() const { |
104 if (compiler() == NULL || method() == NULL) return false; // can happen during debug printing | |
105 if (is_native_method()) return false; | |
106 return compiler()->is_graal(); | |
107 } | |
0 | 108 bool nmethod::is_compiled_by_c2() const { |
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109 if (compiler() == NULL || method() == NULL) return false; // can happen during debug printing |
0 | 110 if (is_native_method()) return false; |
111 return compiler()->is_c2(); | |
112 } | |
1692 | 113 bool nmethod::is_compiled_by_shark() const { |
114 if (is_native_method()) return false; | |
115 assert(compiler() != NULL, "must be"); | |
116 return compiler()->is_shark(); | |
117 } | |
0 | 118 |
119 | |
120 | |
121 //--------------------------------------------------------------------------------- | |
122 // NMethod statistics | |
123 // They are printed under various flags, including: | |
124 // PrintC1Statistics, PrintOptoStatistics, LogVMOutput, and LogCompilation. | |
125 // (In the latter two cases, they like other stats are printed to the log only.) | |
126 | |
127 // These variables are put into one block to reduce relocations | |
128 // and make it simpler to print from the debugger. | |
129 static | |
130 struct nmethod_stats_struct { | |
131 int nmethod_count; | |
132 int total_size; | |
133 int relocation_size; | |
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134 int consts_size; |
1748 | 135 int insts_size; |
0 | 136 int stub_size; |
137 int scopes_data_size; | |
138 int scopes_pcs_size; | |
139 int dependencies_size; | |
140 int handler_table_size; | |
141 int nul_chk_table_size; | |
142 int oops_size; | |
143 | |
144 void note_nmethod(nmethod* nm) { | |
145 nmethod_count += 1; | |
146 total_size += nm->size(); | |
147 relocation_size += nm->relocation_size(); | |
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148 consts_size += nm->consts_size(); |
1748 | 149 insts_size += nm->insts_size(); |
0 | 150 stub_size += nm->stub_size(); |
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151 oops_size += nm->oops_size(); |
0 | 152 scopes_data_size += nm->scopes_data_size(); |
153 scopes_pcs_size += nm->scopes_pcs_size(); | |
154 dependencies_size += nm->dependencies_size(); | |
155 handler_table_size += nm->handler_table_size(); | |
156 nul_chk_table_size += nm->nul_chk_table_size(); | |
157 } | |
158 void print_nmethod_stats() { | |
159 if (nmethod_count == 0) return; | |
160 tty->print_cr("Statistics for %d bytecoded nmethods:", nmethod_count); | |
161 if (total_size != 0) tty->print_cr(" total in heap = %d", total_size); | |
162 if (relocation_size != 0) tty->print_cr(" relocation = %d", relocation_size); | |
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163 if (consts_size != 0) tty->print_cr(" constants = %d", consts_size); |
1748 | 164 if (insts_size != 0) tty->print_cr(" main code = %d", insts_size); |
0 | 165 if (stub_size != 0) tty->print_cr(" stub code = %d", stub_size); |
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166 if (oops_size != 0) tty->print_cr(" oops = %d", oops_size); |
0 | 167 if (scopes_data_size != 0) tty->print_cr(" scopes data = %d", scopes_data_size); |
168 if (scopes_pcs_size != 0) tty->print_cr(" scopes pcs = %d", scopes_pcs_size); | |
169 if (dependencies_size != 0) tty->print_cr(" dependencies = %d", dependencies_size); | |
170 if (handler_table_size != 0) tty->print_cr(" handler table = %d", handler_table_size); | |
171 if (nul_chk_table_size != 0) tty->print_cr(" nul chk table = %d", nul_chk_table_size); | |
172 } | |
173 | |
174 int native_nmethod_count; | |
175 int native_total_size; | |
176 int native_relocation_size; | |
1748 | 177 int native_insts_size; |
0 | 178 int native_oops_size; |
179 void note_native_nmethod(nmethod* nm) { | |
180 native_nmethod_count += 1; | |
181 native_total_size += nm->size(); | |
182 native_relocation_size += nm->relocation_size(); | |
1748 | 183 native_insts_size += nm->insts_size(); |
0 | 184 native_oops_size += nm->oops_size(); |
185 } | |
186 void print_native_nmethod_stats() { | |
187 if (native_nmethod_count == 0) return; | |
188 tty->print_cr("Statistics for %d native nmethods:", native_nmethod_count); | |
189 if (native_total_size != 0) tty->print_cr(" N. total size = %d", native_total_size); | |
190 if (native_relocation_size != 0) tty->print_cr(" N. relocation = %d", native_relocation_size); | |
1748 | 191 if (native_insts_size != 0) tty->print_cr(" N. main code = %d", native_insts_size); |
0 | 192 if (native_oops_size != 0) tty->print_cr(" N. oops = %d", native_oops_size); |
193 } | |
194 | |
195 int pc_desc_resets; // number of resets (= number of caches) | |
196 int pc_desc_queries; // queries to nmethod::find_pc_desc | |
197 int pc_desc_approx; // number of those which have approximate true | |
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198 int pc_desc_repeats; // number of _pc_descs[0] hits |
0 | 199 int pc_desc_hits; // number of LRU cache hits |
200 int pc_desc_tests; // total number of PcDesc examinations | |
201 int pc_desc_searches; // total number of quasi-binary search steps | |
202 int pc_desc_adds; // number of LUR cache insertions | |
203 | |
204 void print_pc_stats() { | |
205 tty->print_cr("PcDesc Statistics: %d queries, %.2f comparisons per query", | |
206 pc_desc_queries, | |
207 (double)(pc_desc_tests + pc_desc_searches) | |
208 / pc_desc_queries); | |
209 tty->print_cr(" caches=%d queries=%d/%d, hits=%d+%d, tests=%d+%d, adds=%d", | |
210 pc_desc_resets, | |
211 pc_desc_queries, pc_desc_approx, | |
212 pc_desc_repeats, pc_desc_hits, | |
213 pc_desc_tests, pc_desc_searches, pc_desc_adds); | |
214 } | |
215 } nmethod_stats; | |
216 | |
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217 |
0 | 218 //--------------------------------------------------------------------------------- |
219 | |
220 | |
221 ExceptionCache::ExceptionCache(Handle exception, address pc, address handler) { | |
222 assert(pc != NULL, "Must be non null"); | |
223 assert(exception.not_null(), "Must be non null"); | |
224 assert(handler != NULL, "Must be non null"); | |
225 | |
226 _count = 0; | |
227 _exception_type = exception->klass(); | |
228 _next = NULL; | |
229 | |
230 add_address_and_handler(pc,handler); | |
231 } | |
232 | |
233 | |
234 address ExceptionCache::match(Handle exception, address pc) { | |
235 assert(pc != NULL,"Must be non null"); | |
236 assert(exception.not_null(),"Must be non null"); | |
237 if (exception->klass() == exception_type()) { | |
238 return (test_address(pc)); | |
239 } | |
240 | |
241 return NULL; | |
242 } | |
243 | |
244 | |
245 bool ExceptionCache::match_exception_with_space(Handle exception) { | |
246 assert(exception.not_null(),"Must be non null"); | |
247 if (exception->klass() == exception_type() && count() < cache_size) { | |
248 return true; | |
249 } | |
250 return false; | |
251 } | |
252 | |
253 | |
254 address ExceptionCache::test_address(address addr) { | |
255 for (int i=0; i<count(); i++) { | |
256 if (pc_at(i) == addr) { | |
257 return handler_at(i); | |
258 } | |
259 } | |
260 return NULL; | |
261 } | |
262 | |
263 | |
264 bool ExceptionCache::add_address_and_handler(address addr, address handler) { | |
265 if (test_address(addr) == handler) return true; | |
266 if (count() < cache_size) { | |
267 set_pc_at(count(),addr); | |
268 set_handler_at(count(), handler); | |
269 increment_count(); | |
270 return true; | |
271 } | |
272 return false; | |
273 } | |
274 | |
275 | |
276 // private method for handling exception cache | |
277 // These methods are private, and used to manipulate the exception cache | |
278 // directly. | |
279 ExceptionCache* nmethod::exception_cache_entry_for_exception(Handle exception) { | |
280 ExceptionCache* ec = exception_cache(); | |
281 while (ec != NULL) { | |
282 if (ec->match_exception_with_space(exception)) { | |
283 return ec; | |
284 } | |
285 ec = ec->next(); | |
286 } | |
287 return NULL; | |
288 } | |
289 | |
290 | |
291 //----------------------------------------------------------------------------- | |
292 | |
293 | |
294 // Helper used by both find_pc_desc methods. | |
295 static inline bool match_desc(PcDesc* pc, int pc_offset, bool approximate) { | |
296 NOT_PRODUCT(++nmethod_stats.pc_desc_tests); | |
297 if (!approximate) | |
298 return pc->pc_offset() == pc_offset; | |
299 else | |
300 return (pc-1)->pc_offset() < pc_offset && pc_offset <= pc->pc_offset(); | |
301 } | |
302 | |
303 void PcDescCache::reset_to(PcDesc* initial_pc_desc) { | |
304 if (initial_pc_desc == NULL) { | |
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305 _pc_descs[0] = NULL; // native method; no PcDescs at all |
0 | 306 return; |
307 } | |
308 NOT_PRODUCT(++nmethod_stats.pc_desc_resets); | |
309 // reset the cache by filling it with benign (non-null) values | |
310 assert(initial_pc_desc->pc_offset() < 0, "must be sentinel"); | |
311 for (int i = 0; i < cache_size; i++) | |
312 _pc_descs[i] = initial_pc_desc; | |
313 } | |
314 | |
315 PcDesc* PcDescCache::find_pc_desc(int pc_offset, bool approximate) { | |
316 NOT_PRODUCT(++nmethod_stats.pc_desc_queries); | |
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317 NOT_PRODUCT(if (approximate) ++nmethod_stats.pc_desc_approx); |
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318 |
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319 // Note: one might think that caching the most recently |
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320 // read value separately would be a win, but one would be |
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321 // wrong. When many threads are updating it, the cache |
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322 // line it's in would bounce between caches, negating |
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323 // any benefit. |
0 | 324 |
325 // In order to prevent race conditions do not load cache elements | |
326 // repeatedly, but use a local copy: | |
327 PcDesc* res; | |
328 | |
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329 // Step one: Check the most recently added value. |
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330 res = _pc_descs[0]; |
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331 if (res == NULL) return NULL; // native method; no PcDescs at all |
0 | 332 if (match_desc(res, pc_offset, approximate)) { |
333 NOT_PRODUCT(++nmethod_stats.pc_desc_repeats); | |
334 return res; | |
335 } | |
336 | |
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337 // Step two: Check the rest of the LRU cache. |
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338 for (int i = 1; i < cache_size; ++i) { |
0 | 339 res = _pc_descs[i]; |
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340 if (res->pc_offset() < 0) break; // optimization: skip empty cache |
0 | 341 if (match_desc(res, pc_offset, approximate)) { |
342 NOT_PRODUCT(++nmethod_stats.pc_desc_hits); | |
343 return res; | |
344 } | |
345 } | |
346 | |
347 // Report failure. | |
348 return NULL; | |
349 } | |
350 | |
351 void PcDescCache::add_pc_desc(PcDesc* pc_desc) { | |
352 NOT_PRODUCT(++nmethod_stats.pc_desc_adds); | |
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353 // Update the LRU cache by shifting pc_desc forward. |
0 | 354 for (int i = 0; i < cache_size; i++) { |
355 PcDesc* next = _pc_descs[i]; | |
356 _pc_descs[i] = pc_desc; | |
357 pc_desc = next; | |
358 } | |
359 } | |
360 | |
361 // adjust pcs_size so that it is a multiple of both oopSize and | |
362 // sizeof(PcDesc) (assumes that if sizeof(PcDesc) is not a multiple | |
363 // of oopSize, then 2*sizeof(PcDesc) is) | |
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364 static int adjust_pcs_size(int pcs_size) { |
0 | 365 int nsize = round_to(pcs_size, oopSize); |
366 if ((nsize % sizeof(PcDesc)) != 0) { | |
367 nsize = pcs_size + sizeof(PcDesc); | |
368 } | |
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369 assert((nsize % oopSize) == 0, "correct alignment"); |
0 | 370 return nsize; |
371 } | |
372 | |
373 //----------------------------------------------------------------------------- | |
374 | |
375 | |
376 void nmethod::add_exception_cache_entry(ExceptionCache* new_entry) { | |
377 assert(ExceptionCache_lock->owned_by_self(),"Must hold the ExceptionCache_lock"); | |
378 assert(new_entry != NULL,"Must be non null"); | |
379 assert(new_entry->next() == NULL, "Must be null"); | |
380 | |
381 if (exception_cache() != NULL) { | |
382 new_entry->set_next(exception_cache()); | |
383 } | |
384 set_exception_cache(new_entry); | |
385 } | |
386 | |
387 void nmethod::remove_from_exception_cache(ExceptionCache* ec) { | |
388 ExceptionCache* prev = NULL; | |
389 ExceptionCache* curr = exception_cache(); | |
390 assert(curr != NULL, "nothing to remove"); | |
391 // find the previous and next entry of ec | |
392 while (curr != ec) { | |
393 prev = curr; | |
394 curr = curr->next(); | |
395 assert(curr != NULL, "ExceptionCache not found"); | |
396 } | |
397 // now: curr == ec | |
398 ExceptionCache* next = curr->next(); | |
399 if (prev == NULL) { | |
400 set_exception_cache(next); | |
401 } else { | |
402 prev->set_next(next); | |
403 } | |
404 delete curr; | |
405 } | |
406 | |
407 | |
408 // public method for accessing the exception cache | |
409 // These are the public access methods. | |
410 address nmethod::handler_for_exception_and_pc(Handle exception, address pc) { | |
411 // We never grab a lock to read the exception cache, so we may | |
412 // have false negatives. This is okay, as it can only happen during | |
413 // the first few exception lookups for a given nmethod. | |
414 ExceptionCache* ec = exception_cache(); | |
415 while (ec != NULL) { | |
416 address ret_val; | |
417 if ((ret_val = ec->match(exception,pc)) != NULL) { | |
418 return ret_val; | |
419 } | |
420 ec = ec->next(); | |
421 } | |
422 return NULL; | |
423 } | |
424 | |
425 | |
426 void nmethod::add_handler_for_exception_and_pc(Handle exception, address pc, address handler) { | |
427 // There are potential race conditions during exception cache updates, so we | |
428 // must own the ExceptionCache_lock before doing ANY modifications. Because | |
605 | 429 // we don't lock during reads, it is possible to have several threads attempt |
0 | 430 // to update the cache with the same data. We need to check for already inserted |
431 // copies of the current data before adding it. | |
432 | |
433 MutexLocker ml(ExceptionCache_lock); | |
434 ExceptionCache* target_entry = exception_cache_entry_for_exception(exception); | |
435 | |
436 if (target_entry == NULL || !target_entry->add_address_and_handler(pc,handler)) { | |
437 target_entry = new ExceptionCache(exception,pc,handler); | |
438 add_exception_cache_entry(target_entry); | |
439 } | |
440 } | |
441 | |
442 | |
443 //-------------end of code for ExceptionCache-------------- | |
444 | |
445 | |
446 int nmethod::total_size() const { | |
447 return | |
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448 consts_size() + |
1748 | 449 insts_size() + |
0 | 450 stub_size() + |
451 scopes_data_size() + | |
452 scopes_pcs_size() + | |
453 handler_table_size() + | |
454 nul_chk_table_size(); | |
455 } | |
456 | |
457 const char* nmethod::compile_kind() const { | |
458 if (is_osr_method()) return "osr"; | |
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459 if (method() != NULL && is_native_method()) return "c2n"; |
0 | 460 return NULL; |
461 } | |
462 | |
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463 // Fill in default values for various flag fields |
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464 void nmethod::init_defaults() { |
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465 _state = alive; |
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466 _marked_for_reclamation = 0; |
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467 _has_flushed_dependencies = 0; |
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468 _speculatively_disconnected = 0; |
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469 _has_unsafe_access = 0; |
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470 _has_method_handle_invokes = 0; |
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471 _lazy_critical_native = 0; |
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472 _has_wide_vectors = 0; |
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473 _marked_for_deoptimization = 0; |
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474 _lock_count = 0; |
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475 _stack_traversal_mark = 0; |
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476 _unload_reported = false; // jvmti state |
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477 |
1726 | 478 #ifdef ASSERT |
479 _oops_are_stale = false; | |
480 #endif | |
481 | |
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482 _oops_do_mark_link = NULL; |
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483 _jmethod_id = NULL; |
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484 _osr_link = NULL; |
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485 _scavenge_root_link = NULL; |
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486 _scavenge_root_state = 0; |
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487 _saved_nmethod_link = NULL; |
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488 _compiler = NULL; |
9707 | 489 #ifdef GRAAL |
490 _graal_installed_code = NULL; | |
491 _triggered_deoptimizations = NULL; | |
492 #endif | |
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493 #ifdef HAVE_DTRACE_H |
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494 _trap_offset = 0; |
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495 #endif // def HAVE_DTRACE_H |
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496 } |
0 | 497 |
498 nmethod* nmethod::new_native_nmethod(methodHandle method, | |
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499 int compile_id, |
0 | 500 CodeBuffer *code_buffer, |
501 int vep_offset, | |
502 int frame_complete, | |
503 int frame_size, | |
504 ByteSize basic_lock_owner_sp_offset, | |
505 ByteSize basic_lock_sp_offset, | |
506 OopMapSet* oop_maps) { | |
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507 code_buffer->finalize_oop_references(method); |
0 | 508 // create nmethod |
509 nmethod* nm = NULL; | |
510 { | |
511 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
512 int native_nmethod_size = allocation_size(code_buffer, sizeof(nmethod)); | |
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513 CodeOffsets offsets; |
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514 offsets.set_value(CodeOffsets::Verified_Entry, vep_offset); |
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515 offsets.set_value(CodeOffsets::Frame_Complete, frame_complete); |
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516 nm = new (native_nmethod_size) nmethod(method(), native_nmethod_size, |
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517 compile_id, &offsets, |
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518 code_buffer, frame_size, |
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519 basic_lock_owner_sp_offset, |
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520 basic_lock_sp_offset, oop_maps); |
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521 NOT_PRODUCT(if (nm != NULL) nmethod_stats.note_native_nmethod(nm)); |
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522 if (PrintAssembly && nm != NULL) { |
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523 Disassembler::decode(nm); |
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524 } |
0 | 525 } |
526 // verify nmethod | |
527 debug_only(if (nm) nm->verify();) // might block | |
528 | |
529 if (nm != NULL) { | |
530 nm->log_new_nmethod(); | |
531 } | |
532 | |
533 return nm; | |
534 } | |
535 | |
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536 #ifdef HAVE_DTRACE_H |
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537 nmethod* nmethod::new_dtrace_nmethod(methodHandle method, |
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538 CodeBuffer *code_buffer, |
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539 int vep_offset, |
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540 int trap_offset, |
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541 int frame_complete, |
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542 int frame_size) { |
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543 code_buffer->finalize_oop_references(method); |
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544 // create nmethod |
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545 nmethod* nm = NULL; |
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546 { |
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547 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
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548 int nmethod_size = allocation_size(code_buffer, sizeof(nmethod)); |
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549 CodeOffsets offsets; |
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550 offsets.set_value(CodeOffsets::Verified_Entry, vep_offset); |
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551 offsets.set_value(CodeOffsets::Dtrace_trap, trap_offset); |
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552 offsets.set_value(CodeOffsets::Frame_Complete, frame_complete); |
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553 |
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554 nm = new (nmethod_size) nmethod(method(), nmethod_size, |
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555 &offsets, code_buffer, frame_size); |
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556 |
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557 NOT_PRODUCT(if (nm != NULL) nmethod_stats.note_nmethod(nm)); |
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558 if (PrintAssembly && nm != NULL) { |
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559 Disassembler::decode(nm); |
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560 } |
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561 } |
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562 // verify nmethod |
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563 debug_only(if (nm) nm->verify();) // might block |
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564 |
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565 if (nm != NULL) { |
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566 nm->log_new_nmethod(); |
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567 } |
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568 |
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569 return nm; |
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570 } |
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571 |
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572 #endif // def HAVE_DTRACE_H |
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573 |
0 | 574 nmethod* nmethod::new_nmethod(methodHandle method, |
575 int compile_id, | |
576 int entry_bci, | |
577 CodeOffsets* offsets, | |
578 int orig_pc_offset, | |
579 DebugInformationRecorder* debug_info, | |
580 Dependencies* dependencies, | |
581 CodeBuffer* code_buffer, int frame_size, | |
582 OopMapSet* oop_maps, | |
583 ExceptionHandlerTable* handler_table, | |
584 ImplicitExceptionTable* nul_chk_table, | |
585 AbstractCompiler* compiler, | |
9707 | 586 int comp_level, |
587 GrowableArray<jlong>* leaf_graph_ids | |
588 #ifdef GRAAL | |
589 , Handle installed_code, | |
590 Handle triggered_deoptimizations | |
591 #endif | |
0 | 592 ) |
593 { | |
594 assert(debug_info->oop_recorder() == code_buffer->oop_recorder(), "shared OR"); | |
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595 code_buffer->finalize_oop_references(method); |
9707 | 596 int leaf_graph_ids_size = leaf_graph_ids == NULL ? 0 : round_to(sizeof(jlong) * leaf_graph_ids->length(), oopSize); |
0 | 597 // create nmethod |
598 nmethod* nm = NULL; | |
599 { MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
600 int nmethod_size = | |
601 allocation_size(code_buffer, sizeof(nmethod)) | |
602 + adjust_pcs_size(debug_info->pcs_size()) | |
603 + round_to(dependencies->size_in_bytes() , oopSize) | |
604 + round_to(handler_table->size_in_bytes(), oopSize) | |
605 + round_to(nul_chk_table->size_in_bytes(), oopSize) | |
9707 | 606 + round_to(debug_info->data_size() , oopSize) |
8883 | 607 + leaf_graph_ids_size; |
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608 nm = new (nmethod_size) |
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609 nmethod(method(), nmethod_size, compile_id, entry_bci, offsets, |
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610 orig_pc_offset, debug_info, dependencies, code_buffer, frame_size, |
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611 oop_maps, |
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612 handler_table, |
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613 nul_chk_table, |
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614 compiler, |
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615 comp_level, |
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616 leaf_graph_ids |
9707 | 617 #ifdef GRAAL |
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618 , installed_code, |
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619 triggered_deoptimizations |
9707 | 620 #endif |
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621 ); |
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622 |
0 | 623 if (nm != NULL) { |
624 // To make dependency checking during class loading fast, record | |
625 // the nmethod dependencies in the classes it is dependent on. | |
626 // This allows the dependency checking code to simply walk the | |
627 // class hierarchy above the loaded class, checking only nmethods | |
628 // which are dependent on those classes. The slow way is to | |
629 // check every nmethod for dependencies which makes it linear in | |
630 // the number of methods compiled. For applications with a lot | |
631 // classes the slow way is too slow. | |
632 for (Dependencies::DepStream deps(nm); deps.next(); ) { | |
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633 Klass* klass = deps.context_type(); |
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634 if (klass == NULL) { |
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635 continue; // ignore things like evol_method |
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636 } |
0 | 637 |
638 // record this nmethod as dependent on this klass | |
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639 InstanceKlass::cast(klass)->add_dependent_nmethod(nm); |
0 | 640 } |
641 } | |
642 NOT_PRODUCT(if (nm != NULL) nmethod_stats.note_nmethod(nm)); | |
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643 if (PrintAssembly && nm != NULL) { |
0 | 644 Disassembler::decode(nm); |
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645 } |
0 | 646 } |
647 | |
648 // verify nmethod | |
649 debug_only(if (nm) nm->verify();) // might block | |
650 | |
651 if (nm != NULL) { | |
652 nm->log_new_nmethod(); | |
653 } | |
654 | |
655 // done | |
656 return nm; | |
657 } | |
658 | |
659 | |
660 // For native wrappers | |
661 nmethod::nmethod( | |
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662 Method* method, |
0 | 663 int nmethod_size, |
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664 int compile_id, |
0 | 665 CodeOffsets* offsets, |
666 CodeBuffer* code_buffer, | |
667 int frame_size, | |
668 ByteSize basic_lock_owner_sp_offset, | |
669 ByteSize basic_lock_sp_offset, | |
670 OopMapSet* oop_maps ) | |
671 : CodeBlob("native nmethod", code_buffer, sizeof(nmethod), | |
672 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, oop_maps), | |
2019 | 673 _native_receiver_sp_offset(basic_lock_owner_sp_offset), |
674 _native_basic_lock_sp_offset(basic_lock_sp_offset) | |
0 | 675 { |
676 { | |
677 debug_only(No_Safepoint_Verifier nsv;) | |
678 assert_locked_or_safepoint(CodeCache_lock); | |
679 | |
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680 init_defaults(); |
0 | 681 _method = method; |
682 _entry_bci = InvocationEntryBci; | |
683 // We have no exception handler or deopt handler make the | |
684 // values something that will never match a pc like the nmethod vtable entry | |
685 _exception_offset = 0; | |
686 _deoptimize_offset = 0; | |
1204 | 687 _deoptimize_mh_offset = 0; |
0 | 688 _orig_pc_offset = 0; |
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689 |
1748 | 690 _consts_offset = data_offset(); |
0 | 691 _stub_offset = data_offset(); |
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692 _oops_offset = data_offset(); |
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693 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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694 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
0 | 695 _scopes_pcs_offset = _scopes_data_offset; |
696 _dependencies_offset = _scopes_pcs_offset; | |
697 _handler_table_offset = _dependencies_offset; | |
698 _nul_chk_table_offset = _handler_table_offset; | |
9707 | 699 _leaf_graph_ids_offset = _nul_chk_table_offset; |
700 _nmethod_end_offset = _leaf_graph_ids_offset; | |
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701 _compile_id = compile_id; |
0 | 702 _comp_level = CompLevel_none; |
1748 | 703 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
704 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
0 | 705 _osr_entry_point = NULL; |
706 _exception_cache = NULL; | |
707 _pc_desc_cache.reset_to(NULL); | |
708 | |
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709 code_buffer->copy_values_to(this); |
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710 if (ScavengeRootsInCode && detect_scavenge_root_oops()) { |
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711 CodeCache::add_scavenge_root_nmethod(this); |
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712 } |
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713 debug_only(verify_scavenge_root_oops()); |
0 | 714 CodeCache::commit(this); |
715 } | |
716 | |
717 if (PrintNativeNMethods || PrintDebugInfo || PrintRelocations || PrintDependencies) { | |
718 ttyLocker ttyl; // keep the following output all in one block | |
719 // This output goes directly to the tty, not the compiler log. | |
720 // To enable tools to match it up with the compilation activity, | |
721 // be sure to tag this tty output with the compile ID. | |
722 if (xtty != NULL) { | |
723 xtty->begin_head("print_native_nmethod"); | |
724 xtty->method(_method); | |
725 xtty->stamp(); | |
726 xtty->end_head(" address='" INTPTR_FORMAT "'", (intptr_t) this); | |
727 } | |
728 // print the header part first | |
729 print(); | |
730 // then print the requested information | |
731 if (PrintNativeNMethods) { | |
732 print_code(); | |
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733 if (oop_maps != NULL) { |
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734 oop_maps->print(); |
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735 } |
0 | 736 } |
737 if (PrintRelocations) { | |
738 print_relocations(); | |
739 } | |
740 if (xtty != NULL) { | |
741 xtty->tail("print_native_nmethod"); | |
742 } | |
743 } | |
744 } | |
745 | |
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746 // For dtrace wrappers |
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747 #ifdef HAVE_DTRACE_H |
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748 nmethod::nmethod( |
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749 Method* method, |
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750 int nmethod_size, |
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751 CodeOffsets* offsets, |
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752 CodeBuffer* code_buffer, |
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753 int frame_size) |
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754 : CodeBlob("dtrace nmethod", code_buffer, sizeof(nmethod), |
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755 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, NULL), |
2019 | 756 _native_receiver_sp_offset(in_ByteSize(-1)), |
757 _native_basic_lock_sp_offset(in_ByteSize(-1)) | |
116
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758 { |
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759 { |
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760 debug_only(No_Safepoint_Verifier nsv;) |
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761 assert_locked_or_safepoint(CodeCache_lock); |
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762 |
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763 init_defaults(); |
116
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764 _method = method; |
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765 _entry_bci = InvocationEntryBci; |
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766 // We have no exception handler or deopt handler make the |
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767 // values something that will never match a pc like the nmethod vtable entry |
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768 _exception_offset = 0; |
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769 _deoptimize_offset = 0; |
1204 | 770 _deoptimize_mh_offset = 0; |
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771 _unwind_handler_offset = -1; |
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772 _trap_offset = offsets->value(CodeOffsets::Dtrace_trap); |
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773 _orig_pc_offset = 0; |
1748 | 774 _consts_offset = data_offset(); |
116
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775 _stub_offset = data_offset(); |
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776 _oops_offset = data_offset(); |
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777 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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778 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
116
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779 _scopes_pcs_offset = _scopes_data_offset; |
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780 _dependencies_offset = _scopes_pcs_offset; |
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781 _handler_table_offset = _dependencies_offset; |
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782 _nul_chk_table_offset = _handler_table_offset; |
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783 _nmethod_end_offset = _nul_chk_table_offset; |
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784 _compile_id = 0; // default |
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785 _comp_level = CompLevel_none; |
1748 | 786 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
787 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
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788 _osr_entry_point = NULL; |
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789 _exception_cache = NULL; |
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790 _pc_desc_cache.reset_to(NULL); |
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791 |
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792 code_buffer->copy_values_to(this); |
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793 debug_only(verify_scavenge_root_oops()); |
116
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794 CodeCache::commit(this); |
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795 } |
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796 |
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797 if (PrintNMethods || PrintDebugInfo || PrintRelocations || PrintDependencies) { |
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798 ttyLocker ttyl; // keep the following output all in one block |
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799 // This output goes directly to the tty, not the compiler log. |
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800 // To enable tools to match it up with the compilation activity, |
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801 // be sure to tag this tty output with the compile ID. |
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802 if (xtty != NULL) { |
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803 xtty->begin_head("print_dtrace_nmethod"); |
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804 xtty->method(_method); |
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805 xtty->stamp(); |
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806 xtty->end_head(" address='" INTPTR_FORMAT "'", (intptr_t) this); |
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807 } |
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808 // print the header part first |
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809 print(); |
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810 // then print the requested information |
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811 if (PrintNMethods) { |
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812 print_code(); |
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813 } |
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814 if (PrintRelocations) { |
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815 print_relocations(); |
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816 } |
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817 if (xtty != NULL) { |
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818 xtty->tail("print_dtrace_nmethod"); |
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819 } |
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820 } |
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821 } |
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822 #endif // def HAVE_DTRACE_H |
0 | 823 |
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824 void* nmethod::operator new(size_t size, int nmethod_size) throw () { |
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825 // Not critical, may return null if there is too little continuous memory |
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826 return CodeCache::allocate(nmethod_size); |
0 | 827 } |
828 | |
829 nmethod::nmethod( | |
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830 Method* method, |
0 | 831 int nmethod_size, |
832 int compile_id, | |
833 int entry_bci, | |
834 CodeOffsets* offsets, | |
835 int orig_pc_offset, | |
836 DebugInformationRecorder* debug_info, | |
837 Dependencies* dependencies, | |
838 CodeBuffer *code_buffer, | |
839 int frame_size, | |
840 OopMapSet* oop_maps, | |
841 ExceptionHandlerTable* handler_table, | |
842 ImplicitExceptionTable* nul_chk_table, | |
843 AbstractCompiler* compiler, | |
9707 | 844 int comp_level, |
845 GrowableArray<jlong>* leaf_graph_ids | |
846 #ifdef GRAAL | |
847 , Handle installed_code, | |
848 Handle triggered_deoptimizations | |
849 #endif | |
0 | 850 ) |
851 : CodeBlob("nmethod", code_buffer, sizeof(nmethod), | |
852 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, oop_maps), | |
2019 | 853 _native_receiver_sp_offset(in_ByteSize(-1)), |
854 _native_basic_lock_sp_offset(in_ByteSize(-1)) | |
0 | 855 { |
856 assert(debug_info->oop_recorder() == code_buffer->oop_recorder(), "shared OR"); | |
857 { | |
858 debug_only(No_Safepoint_Verifier nsv;) | |
859 assert_locked_or_safepoint(CodeCache_lock); | |
860 | |
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861 init_defaults(); |
0 | 862 _method = method; |
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863 _entry_bci = entry_bci; |
0 | 864 _compile_id = compile_id; |
865 _comp_level = comp_level; | |
866 _compiler = compiler; | |
867 _orig_pc_offset = orig_pc_offset; | |
1748 | 868 |
869 // Section offsets | |
1762
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870 _consts_offset = content_offset() + code_buffer->total_offset_of(code_buffer->consts()); |
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871 _stub_offset = content_offset() + code_buffer->total_offset_of(code_buffer->stubs()); |
0 | 872 |
9707 | 873 #ifdef GRAAL |
874 _graal_installed_code = installed_code(); | |
875 _triggered_deoptimizations = (typeArrayOop)triggered_deoptimizations(); | |
876 #endif | |
877 if (compiler->is_graal()) { | |
878 // Graal might not produce any stub sections | |
879 if (offsets->value(CodeOffsets::Exceptions) != -1) { | |
880 _exception_offset = code_offset() + offsets->value(CodeOffsets::Exceptions); | |
881 } else { | |
882 _exception_offset = -1; | |
883 } | |
884 if (offsets->value(CodeOffsets::Deopt) != -1) { | |
885 _deoptimize_offset = code_offset() + offsets->value(CodeOffsets::Deopt); | |
886 } else { | |
887 _deoptimize_offset = -1; | |
888 } | |
889 if (offsets->value(CodeOffsets::DeoptMH) != -1) { | |
890 _deoptimize_mh_offset = code_offset() + offsets->value(CodeOffsets::DeoptMH); | |
891 } else { | |
892 _deoptimize_mh_offset = -1; | |
893 } | |
1762
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894 } else { |
9707 | 895 // Exception handler and deopt handler are in the stub section |
896 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must be set"); | |
897 assert(offsets->value(CodeOffsets::Deopt ) != -1, "must be set"); | |
898 | |
899 _exception_offset = _stub_offset + offsets->value(CodeOffsets::Exceptions); | |
900 _deoptimize_offset = _stub_offset + offsets->value(CodeOffsets::Deopt); | |
901 if (offsets->value(CodeOffsets::DeoptMH) != -1) { | |
902 _deoptimize_mh_offset = _stub_offset + offsets->value(CodeOffsets::DeoptMH); | |
903 } else { | |
904 _deoptimize_mh_offset = -1; | |
905 } | |
1762
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906 } |
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907 if (offsets->value(CodeOffsets::UnwindHandler) != -1) { |
1748 | 908 _unwind_handler_offset = code_offset() + offsets->value(CodeOffsets::UnwindHandler); |
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909 } else { |
1748 | 910 _unwind_handler_offset = -1; |
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911 } |
1748 | 912 |
9707 | 913 int leaf_graph_ids_size = leaf_graph_ids == NULL ? 0 : round_to(sizeof(jlong) * leaf_graph_ids->length(), oopSize); |
914 | |
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915 _oops_offset = data_offset(); |
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916 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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917 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
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918 |
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919 _scopes_pcs_offset = _scopes_data_offset + round_to(debug_info->data_size (), oopSize); |
0 | 920 _dependencies_offset = _scopes_pcs_offset + adjust_pcs_size(debug_info->pcs_size()); |
921 _handler_table_offset = _dependencies_offset + round_to(dependencies->size_in_bytes (), oopSize); | |
922 _nul_chk_table_offset = _handler_table_offset + round_to(handler_table->size_in_bytes(), oopSize); | |
9707 | 923 _leaf_graph_ids_offset = _nul_chk_table_offset + round_to(nul_chk_table->size_in_bytes(), oopSize); |
924 _nmethod_end_offset = _leaf_graph_ids_offset + leaf_graph_ids_size; | |
0 | 925 |
1748 | 926 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
927 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
928 _osr_entry_point = code_begin() + offsets->value(CodeOffsets::OSR_Entry); | |
0 | 929 _exception_cache = NULL; |
930 _pc_desc_cache.reset_to(scopes_pcs_begin()); | |
931 | |
932 // Copy contents of ScopeDescRecorder to nmethod | |
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933 code_buffer->copy_values_to(this); |
0 | 934 debug_info->copy_to(this); |
935 dependencies->copy_to(this); | |
989
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936 if (ScavengeRootsInCode && detect_scavenge_root_oops()) { |
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937 CodeCache::add_scavenge_root_nmethod(this); |
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938 } |
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939 debug_only(verify_scavenge_root_oops()); |
0 | 940 |
941 CodeCache::commit(this); | |
942 | |
943 // Copy contents of ExceptionHandlerTable to nmethod | |
944 handler_table->copy_to(this); | |
945 nul_chk_table->copy_to(this); | |
946 | |
9707 | 947 if (leaf_graph_ids != NULL && leaf_graph_ids_size > 0) { |
948 memcpy(leaf_graph_ids_begin(), leaf_graph_ids->adr_at(0), leaf_graph_ids_size); | |
949 } | |
950 | |
0 | 951 // we use the information of entry points to find out if a method is |
952 // static or non static | |
953 assert(compiler->is_c2() || | |
954 _method->is_static() == (entry_point() == _verified_entry_point), | |
955 " entry points must be same for static methods and vice versa"); | |
956 } | |
957 | |
100
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958 bool printnmethods = PrintNMethods |
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959 || CompilerOracle::should_print(_method) |
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960 || CompilerOracle::has_option_string(_method, "PrintNMethods"); |
0 | 961 if (printnmethods || PrintDebugInfo || PrintRelocations || PrintDependencies || PrintExceptionHandlers) { |
962 print_nmethod(printnmethods); | |
963 } | |
964 } | |
965 | |
966 | |
967 // Print a short set of xml attributes to identify this nmethod. The | |
968 // output should be embedded in some other element. | |
969 void nmethod::log_identity(xmlStream* log) const { | |
970 log->print(" compile_id='%d'", compile_id()); | |
971 const char* nm_kind = compile_kind(); | |
972 if (nm_kind != NULL) log->print(" compile_kind='%s'", nm_kind); | |
973 if (compiler() != NULL) { | |
974 log->print(" compiler='%s'", compiler()->name()); | |
975 } | |
1783 | 976 if (TieredCompilation) { |
977 log->print(" level='%d'", comp_level()); | |
978 } | |
0 | 979 } |
980 | |
981 | |
982 #define LOG_OFFSET(log, name) \ | |
983 if ((intptr_t)name##_end() - (intptr_t)name##_begin()) \ | |
984 log->print(" " XSTR(name) "_offset='%d'" , \ | |
985 (intptr_t)name##_begin() - (intptr_t)this) | |
986 | |
987 | |
988 void nmethod::log_new_nmethod() const { | |
989 if (LogCompilation && xtty != NULL) { | |
990 ttyLocker ttyl; | |
991 HandleMark hm; | |
992 xtty->begin_elem("nmethod"); | |
993 log_identity(xtty); | |
1748 | 994 xtty->print(" entry='" INTPTR_FORMAT "' size='%d'", code_begin(), size()); |
0 | 995 xtty->print(" address='" INTPTR_FORMAT "'", (intptr_t) this); |
996 | |
997 LOG_OFFSET(xtty, relocation); | |
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998 LOG_OFFSET(xtty, consts); |
1748 | 999 LOG_OFFSET(xtty, insts); |
0 | 1000 LOG_OFFSET(xtty, stub); |
1001 LOG_OFFSET(xtty, scopes_data); | |
1002 LOG_OFFSET(xtty, scopes_pcs); | |
1003 LOG_OFFSET(xtty, dependencies); | |
1004 LOG_OFFSET(xtty, handler_table); | |
1005 LOG_OFFSET(xtty, nul_chk_table); | |
1006 LOG_OFFSET(xtty, oops); | |
1007 | |
1008 xtty->method(method()); | |
1009 xtty->stamp(); | |
1010 xtty->end_elem(); | |
1011 } | |
1012 } | |
1013 | |
1014 #undef LOG_OFFSET | |
1015 | |
1016 | |
1017 // Print out more verbose output usually for a newly created nmethod. | |
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1018 void nmethod::print_on(outputStream* st, const char* msg) const { |
0 | 1019 if (st != NULL) { |
1020 ttyLocker ttyl; | |
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1021 if (WizardMode) { |
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1022 CompileTask::print_compilation(st, this, msg, /*short_form:*/ true); |
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1023 st->print_cr(" (" INTPTR_FORMAT ")", this); |
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1024 } else { |
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1025 CompileTask::print_compilation(st, this, msg, /*short_form:*/ false); |
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1026 } |
0 | 1027 } |
1028 } | |
1029 | |
1030 | |
1031 void nmethod::print_nmethod(bool printmethod) { | |
1032 ttyLocker ttyl; // keep the following output all in one block | |
1033 if (xtty != NULL) { | |
1034 xtty->begin_head("print_nmethod"); | |
1035 xtty->stamp(); | |
1036 xtty->end_head(); | |
1037 } | |
1038 // print the header part first | |
1039 print(); | |
1040 // then print the requested information | |
1041 if (printmethod) { | |
1042 print_code(); | |
1043 print_pcs(); | |
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1044 if (oop_maps()) { |
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1045 oop_maps()->print(); |
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1046 } |
0 | 1047 } |
1048 if (PrintDebugInfo) { | |
1049 print_scopes(); | |
1050 } | |
1051 if (PrintRelocations) { | |
1052 print_relocations(); | |
1053 } | |
1054 if (PrintDependencies) { | |
1055 print_dependencies(); | |
1056 } | |
1057 if (PrintExceptionHandlers) { | |
1058 print_handler_table(); | |
1059 print_nul_chk_table(); | |
1060 } | |
1061 if (xtty != NULL) { | |
1062 xtty->tail("print_nmethod"); | |
1063 } | |
1064 } | |
1065 | |
1066 | |
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1067 // Promote one word from an assembly-time handle to a live embedded oop. |
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1068 inline void nmethod::initialize_immediate_oop(oop* dest, jobject handle) { |
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1069 if (handle == NULL || |
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1070 // As a special case, IC oops are initialized to 1 or -1. |
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1071 handle == (jobject) Universe::non_oop_word()) { |
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1072 (*dest) = (oop) handle; |
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1073 } else { |
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1074 (*dest) = JNIHandles::resolve_non_null(handle); |
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1075 } |
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1076 } |
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1077 |
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1078 |
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1079 // Have to have the same name because it's called by a template |
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1080 void nmethod::copy_values(GrowableArray<jobject>* array) { |
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1081 int length = array->length(); |
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1082 assert((address)(oops_begin() + length) <= (address)oops_end(), "oops big enough"); |
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1083 oop* dest = oops_begin(); |
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1084 for (int index = 0 ; index < length; index++) { |
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1085 initialize_immediate_oop(&dest[index], array->at(index)); |
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1086 } |
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1087 |
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1088 // Now we can fix up all the oops in the code. We need to do this |
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1089 // in the code because the assembler uses jobjects as placeholders. |
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1090 // The code and relocations have already been initialized by the |
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1091 // CodeBlob constructor, so it is valid even at this early point to |
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1092 // iterate over relocations and patch the code. |
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1093 fix_oop_relocations(NULL, NULL, /*initialize_immediates=*/ true); |
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1094 } |
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1095 |
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1096 void nmethod::copy_values(GrowableArray<Metadata*>* array) { |
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1097 int length = array->length(); |
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1098 assert((address)(metadata_begin() + length) <= (address)metadata_end(), "big enough"); |
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1099 Metadata** dest = metadata_begin(); |
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1100 for (int index = 0 ; index < length; index++) { |
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1101 dest[index] = array->at(index); |
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1102 } |
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1103 } |
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1104 |
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1105 bool nmethod::is_at_poll_return(address pc) { |
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1106 RelocIterator iter(this, pc, pc+1); |
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1107 while (iter.next()) { |
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1108 if (iter.type() == relocInfo::poll_return_type) |
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1109 return true; |
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1110 } |
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1111 return false; |
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1112 } |
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1113 |
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1114 |
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1115 bool nmethod::is_at_poll_or_poll_return(address pc) { |
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1116 RelocIterator iter(this, pc, pc+1); |
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1117 while (iter.next()) { |
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1118 relocInfo::relocType t = iter.type(); |
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1119 if (t == relocInfo::poll_return_type || t == relocInfo::poll_type) |
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1120 return true; |
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1121 } |
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1122 return false; |
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1123 } |
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1124 |
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1125 |
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1126 void nmethod::fix_oop_relocations(address begin, address end, bool initialize_immediates) { |
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1127 // re-patch all oop-bearing instructions, just in case some oops moved |
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1128 RelocIterator iter(this, begin, end); |
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1129 while (iter.next()) { |
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1130 if (iter.type() == relocInfo::oop_type) { |
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1131 oop_Relocation* reloc = iter.oop_reloc(); |
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1132 if (initialize_immediates && reloc->oop_is_immediate()) { |
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1133 oop* dest = reloc->oop_addr(); |
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1134 initialize_immediate_oop(dest, (jobject) *dest); |
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1135 } |
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1136 // Refresh the oop-related bits of this instruction. |
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1137 reloc->fix_oop_relocation(); |
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1138 } else if (iter.type() == relocInfo::metadata_type) { |
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1139 metadata_Relocation* reloc = iter.metadata_reloc(); |
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1140 reloc->fix_metadata_relocation(); |
1563
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1141 } |
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1142 |
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1143 // There must not be any interfering patches or breakpoints. |
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1144 assert(!(iter.type() == relocInfo::breakpoint_type |
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1145 && iter.breakpoint_reloc()->active()), |
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1146 "no active breakpoint"); |
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1147 } |
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1148 } |
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1149 |
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1150 |
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1151 void nmethod::verify_oop_relocations() { |
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1152 // Ensure sure that the code matches the current oop values |
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1153 RelocIterator iter(this, NULL, NULL); |
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1154 while (iter.next()) { |
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1155 if (iter.type() == relocInfo::oop_type) { |
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1156 oop_Relocation* reloc = iter.oop_reloc(); |
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1157 if (!reloc->oop_is_immediate()) { |
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1158 reloc->verify_oop_relocation(); |
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1159 } |
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1160 } |
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1161 } |
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1162 } |
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1163 |
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1164 |
0 | 1165 ScopeDesc* nmethod::scope_desc_at(address pc) { |
1166 PcDesc* pd = pc_desc_at(pc); | |
1167 guarantee(pd != NULL, "scope must be present"); | |
1168 return new ScopeDesc(this, pd->scope_decode_offset(), | |
9707 | 1169 pd->obj_decode_offset(), pd->should_reexecute(), pd->rethrow_exception(), |
1253
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1170 pd->return_oop()); |
0 | 1171 } |
1172 | |
1173 | |
1174 void nmethod::clear_inline_caches() { | |
1175 assert(SafepointSynchronize::is_at_safepoint(), "cleaning of IC's only allowed at safepoint"); | |
1176 if (is_zombie()) { | |
1177 return; | |
1178 } | |
1179 | |
1180 RelocIterator iter(this); | |
1181 while (iter.next()) { | |
1182 iter.reloc()->clear_inline_cache(); | |
1183 } | |
1184 } | |
1185 | |
1186 | |
1187 void nmethod::cleanup_inline_caches() { | |
1188 | |
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1189 assert_locked_or_safepoint(CompiledIC_lock); |
0 | 1190 |
1191 // If the method is not entrant or zombie then a JMP is plastered over the | |
1192 // first few bytes. If an oop in the old code was there, that oop | |
1193 // should not get GC'd. Skip the first few bytes of oops on | |
1194 // not-entrant methods. | |
1195 address low_boundary = verified_entry_point(); | |
1196 if (!is_in_use()) { | |
1197 low_boundary += NativeJump::instruction_size; | |
1198 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
1199 // This means that the low_boundary is going to be a little too high. | |
1200 // This shouldn't matter, since oops of non-entrant methods are never used. | |
1201 // In fact, why are we bothering to look at oops in a non-entrant method?? | |
1202 } | |
1203 | |
1204 // Find all calls in an nmethod, and clear the ones that points to zombie methods | |
1205 ResourceMark rm; | |
1206 RelocIterator iter(this, low_boundary); | |
1207 while(iter.next()) { | |
1208 switch(iter.type()) { | |
1209 case relocInfo::virtual_call_type: | |
1210 case relocInfo::opt_virtual_call_type: { | |
1211 CompiledIC *ic = CompiledIC_at(iter.reloc()); | |
1212 // Ok, to lookup references to zombies here | |
1213 CodeBlob *cb = CodeCache::find_blob_unsafe(ic->ic_destination()); | |
1214 if( cb != NULL && cb->is_nmethod() ) { | |
1215 nmethod* nm = (nmethod*)cb; | |
1216 // Clean inline caches pointing to both zombie and not_entrant methods | |
1202 | 1217 if (!nm->is_in_use() || (nm->method()->code() != nm)) ic->set_to_clean(); |
0 | 1218 } |
1219 break; | |
1220 } | |
1221 case relocInfo::static_call_type: { | |
1222 CompiledStaticCall *csc = compiledStaticCall_at(iter.reloc()); | |
1223 CodeBlob *cb = CodeCache::find_blob_unsafe(csc->destination()); | |
1224 if( cb != NULL && cb->is_nmethod() ) { | |
1225 nmethod* nm = (nmethod*)cb; | |
1226 // Clean inline caches pointing to both zombie and not_entrant methods | |
1202 | 1227 if (!nm->is_in_use() || (nm->method()->code() != nm)) csc->set_to_clean(); |
0 | 1228 } |
1229 break; | |
1230 } | |
1231 } | |
1232 } | |
1233 } | |
1234 | |
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1235 // This is a private interface with the sweeper. |
0 | 1236 void nmethod::mark_as_seen_on_stack() { |
1237 assert(is_not_entrant(), "must be a non-entrant method"); | |
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1238 // Set the traversal mark to ensure that the sweeper does 2 |
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1239 // cleaning passes before moving to zombie. |
0 | 1240 set_stack_traversal_mark(NMethodSweeper::traversal_count()); |
1241 } | |
1242 | |
2342
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1243 // Tell if a non-entrant method can be converted to a zombie (i.e., |
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1244 // there are no activations on the stack, not in use by the VM, |
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1245 // and not in use by the ServiceThread) |
0 | 1246 bool nmethod::can_not_entrant_be_converted() { |
1247 assert(is_not_entrant(), "must be a non-entrant method"); | |
1248 | |
1249 // Since the nmethod sweeper only does partial sweep the sweeper's traversal | |
1250 // count can be greater than the stack traversal count before it hits the | |
1251 // nmethod for the second time. | |
2342
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1252 return stack_traversal_mark()+1 < NMethodSweeper::traversal_count() && |
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1253 !is_locked_by_vm(); |
0 | 1254 } |
1255 | |
1256 void nmethod::inc_decompile_count() { | |
9707 | 1257 if (!is_compiled_by_c2() && !is_compiled_by_graal()) return; |
0 | 1258 // Could be gated by ProfileTraps, but do not bother... |
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1259 Method* m = method(); |
0 | 1260 if (m == NULL) return; |
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1261 MethodData* mdo = m->method_data(); |
0 | 1262 if (mdo == NULL) return; |
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1263 // There is a benign race here. See comments in methodData.hpp. |
0 | 1264 mdo->inc_decompile_count(); |
1265 } | |
1266 | |
1267 void nmethod::make_unloaded(BoolObjectClosure* is_alive, oop cause) { | |
1268 | |
1269 post_compiled_method_unload(); | |
1270 | |
1271 // Since this nmethod is being unloaded, make sure that dependencies | |
1272 // recorded in instanceKlasses get flushed and pass non-NULL closure to | |
1273 // indicate that this work is being done during a GC. | |
1274 assert(Universe::heap()->is_gc_active(), "should only be called during gc"); | |
1275 assert(is_alive != NULL, "Should be non-NULL"); | |
1276 // A non-NULL is_alive closure indicates that this is being called during GC. | |
1277 flush_dependencies(is_alive); | |
1278 | |
1279 // Break cycle between nmethod & method | |
1280 if (TraceClassUnloading && WizardMode) { | |
1281 tty->print_cr("[Class unloading: Making nmethod " INTPTR_FORMAT | |
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1282 " unloadable], Method*(" INTPTR_FORMAT |
0 | 1283 "), cause(" INTPTR_FORMAT ")", |
1284 this, (address)_method, (address)cause); | |
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1285 if (!Universe::heap()->is_gc_active()) |
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1286 cause->klass()->print(); |
0 | 1287 } |
941 | 1288 // Unlink the osr method, so we do not look this up again |
1289 if (is_osr_method()) { | |
1290 invalidate_osr_method(); | |
1291 } | |
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1292 // If _method is already NULL the Method* is about to be unloaded, |
0 | 1293 // so we don't have to break the cycle. Note that it is possible to |
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1294 // have the Method* live here, in case we unload the nmethod because |
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1295 // it is pointing to some oop (other than the Method*) being unloaded. |
0 | 1296 if (_method != NULL) { |
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1297 // OSR methods point to the Method*, but the Method* does not |
0 | 1298 // point back! |
1299 if (_method->code() == this) { | |
1300 _method->clear_code(); // Break a cycle | |
1301 } | |
1302 _method = NULL; // Clear the method of this dead nmethod | |
1303 } | |
9707 | 1304 |
1305 #ifdef GRAAL | |
1306 // The method can only be unloaded after the pointer to the installed code | |
1307 // Java wrapper is no longer alive. Here we need to clear out this weak | |
1308 // reference to the dead object. | |
1309 if (_graal_installed_code != NULL) { | |
1310 _graal_installed_code = NULL; | |
1311 } | |
1312 #endif | |
1313 | |
0 | 1314 // Make the class unloaded - i.e., change state and notify sweeper |
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1315 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint"); |
0 | 1316 if (is_in_use()) { |
1317 // Transitioning directly from live to unloaded -- so | |
1318 // we need to force a cache clean-up; remember this | |
1319 // for later on. | |
1320 CodeCache::set_needs_cache_clean(true); | |
1321 } | |
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1322 _state = unloaded; |
0 | 1323 |
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1324 // Log the unloading. |
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1325 log_state_change(); |
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1326 |
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1327 // The Method* is gone at this point |
0 | 1328 assert(_method == NULL, "Tautology"); |
1329 | |
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1330 set_osr_link(NULL); |
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1331 //set_scavenge_root_link(NULL); // done by prune_scavenge_root_nmethods |
0 | 1332 NMethodSweeper::notify(this); |
1333 } | |
1334 | |
1335 void nmethod::invalidate_osr_method() { | |
1336 assert(_entry_bci != InvocationEntryBci, "wrong kind of nmethod"); | |
1337 // Remove from list of active nmethods | |
1338 if (method() != NULL) | |
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1339 method()->method_holder()->remove_osr_nmethod(this); |
0 | 1340 // Set entry as invalid |
1341 _entry_bci = InvalidOSREntryBci; | |
1342 } | |
1343 | |
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1344 void nmethod::log_state_change() const { |
0 | 1345 if (LogCompilation) { |
1346 if (xtty != NULL) { | |
1347 ttyLocker ttyl; // keep the following output all in one block | |
1644
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1348 if (_state == unloaded) { |
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1349 xtty->begin_elem("make_unloaded thread='" UINTX_FORMAT "'", |
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1350 os::current_thread_id()); |
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1351 } else { |
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1352 xtty->begin_elem("make_not_entrant thread='" UINTX_FORMAT "'%s", |
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1353 os::current_thread_id(), |
1644
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1354 (_state == zombie ? " zombie='1'" : "")); |
1109
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1355 } |
0 | 1356 log_identity(xtty); |
1357 xtty->stamp(); | |
1358 xtty->end_elem(); | |
1359 } | |
1360 } | |
1644
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1361 if (PrintCompilation && _state != unloaded) { |
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1362 print_on(tty, _state == zombie ? "made zombie" : "made not entrant"); |
0 | 1363 } |
1364 } | |
1365 | |
1366 // Common functionality for both make_not_entrant and make_zombie | |
1141 | 1367 bool nmethod::make_not_entrant_or_zombie(unsigned int state) { |
0 | 1368 assert(state == zombie || state == not_entrant, "must be zombie or not_entrant"); |
2342
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1369 assert(!is_zombie(), "should not already be a zombie"); |
0 | 1370 |
1644
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1371 // Make sure neither the nmethod nor the method is flushed in case of a safepoint in code below. |
0 | 1372 nmethodLocker nml(this); |
1644
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1373 methodHandle the_method(method()); |
1726 | 1374 No_Safepoint_Verifier nsv; |
0 | 1375 |
1376 { | |
1109
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1377 // invalidate osr nmethod before acquiring the patching lock since |
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1378 // they both acquire leaf locks and we don't want a deadlock. |
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1379 // This logic is equivalent to the logic below for patching the |
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1380 // verified entry point of regular methods. |
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1381 if (is_osr_method()) { |
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1382 // this effectively makes the osr nmethod not entrant |
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1383 invalidate_osr_method(); |
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1384 } |
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1385 |
0 | 1386 // Enter critical section. Does not block for safepoint. |
1387 MutexLockerEx pl(Patching_lock, Mutex::_no_safepoint_check_flag); | |
1109
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1388 |
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1389 if (_state == state) { |
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1390 // another thread already performed this transition so nothing |
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1391 // to do, but return false to indicate this. |
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1392 return false; |
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1393 } |
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1394 |
0 | 1395 // The caller can be calling the method statically or through an inline |
1396 // cache call. | |
1109
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1397 if (!is_osr_method() && !is_not_entrant()) { |
9707 | 1398 address stub = SharedRuntime::get_handle_wrong_method_stub(); |
1399 #ifdef GRAAL | |
1400 if (_graal_installed_code != NULL && !HotSpotNmethod::isDefault(_graal_installed_code)) { | |
1401 // This was manually installed machine code. Patch entry with stub that throws an exception. | |
1402 stub = SharedRuntime::get_deoptimized_installed_code_stub(); | |
1403 } | |
1404 #endif | |
1405 NativeJump::patch_verified_entry(entry_point(), verified_entry_point(), stub); | |
0 | 1406 } |
1407 | |
1644
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1408 if (is_in_use()) { |
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1409 // It's a true state change, so mark the method as decompiled. |
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1410 // Do it only for transition from alive. |
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1411 inc_decompile_count(); |
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1412 } |
1206
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1413 |
0 | 1414 // Change state |
1644
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1415 _state = state; |
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1416 |
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1417 // Log the transition once |
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1418 log_state_change(); |
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1419 |
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1420 // Remove nmethod from method. |
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1421 // We need to check if both the _code and _from_compiled_code_entry_point |
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1422 // refer to this nmethod because there is a race in setting these two fields |
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1423 // in Method* as seen in bugid 4947125. |
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1424 // If the vep() points to the zombie nmethod, the memory for the nmethod |
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1425 // could be flushed and the compiler and vtable stubs could still call |
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1426 // through it. |
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1427 if (method() != NULL && (method()->code() == this || |
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1428 method()->from_compiled_entry() == verified_entry_point())) { |
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1429 HandleMark hm; |
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1430 method()->clear_code(); |
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1431 } |
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1432 |
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1433 if (state == not_entrant) { |
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1434 mark_as_seen_on_stack(); |
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1435 } |
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1436 |
0 | 1437 } // leave critical region under Patching_lock |
1438 | |
1538
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1439 // When the nmethod becomes zombie it is no longer alive so the |
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1440 // dependencies must be flushed. nmethods in the not_entrant |
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1441 // state will be flushed later when the transition to zombie |
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1442 // happens or they get unloaded. |
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1443 if (state == zombie) { |
1726 | 1444 { |
1445 // Flushing dependecies must be done before any possible | |
1446 // safepoint can sneak in, otherwise the oops used by the | |
1447 // dependency logic could have become stale. | |
1448 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
1449 flush_dependencies(NULL); | |
1450 } | |
1644
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1451 |
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1452 // zombie only - if a JVMTI agent has enabled the CompiledMethodUnload |
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1453 // event and it hasn't already been reported for this nmethod then |
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1454 // report it now. The event may have been reported earilier if the GC |
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1455 // marked it for unloading). JvmtiDeferredEventQueue support means |
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1456 // we no longer go to a safepoint here. |
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1457 post_compiled_method_unload(); |
1726 | 1458 |
1459 #ifdef ASSERT | |
1460 // It's no longer safe to access the oops section since zombie | |
1461 // nmethods aren't scanned for GC. | |
1462 _oops_are_stale = true; | |
1463 #endif | |
1538
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1464 } else { |
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1465 assert(state == not_entrant, "other cases may need to be handled differently"); |
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1466 } |
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1467 |
0 | 1468 if (TraceCreateZombies) { |
9707 | 1469 ResourceMark m; |
1470 tty->print_cr("nmethod <" INTPTR_FORMAT "> %s code made %s", this, this->method()->name_and_sig_as_C_string(), (state == not_entrant) ? "not entrant" : "zombie"); | |
0 | 1471 } |
1472 | |
1473 // Make sweeper aware that there is a zombie method that needs to be removed | |
1474 NMethodSweeper::notify(this); | |
1475 | |
1109
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1476 return true; |
0 | 1477 } |
1478 | |
1479 void nmethod::flush() { | |
1480 // Note that there are no valid oops in the nmethod anymore. | |
1481 assert(is_zombie() || (is_osr_method() && is_unloaded()), "must be a zombie method"); | |
1482 assert(is_marked_for_reclamation() || (is_osr_method() && is_unloaded()), "must be marked for reclamation"); | |
1483 | |
1484 assert (!is_locked_by_vm(), "locked methods shouldn't be flushed"); | |
1538
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1485 assert_locked_or_safepoint(CodeCache_lock); |
0 | 1486 |
1487 // completely deallocate this method | |
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1488 Events::log(JavaThread::current(), "flushing nmethod " INTPTR_FORMAT, this); |
0 | 1489 if (PrintMethodFlushing) { |
1202 | 1490 tty->print_cr("*flushing nmethod %3d/" INTPTR_FORMAT ". Live blobs:" UINT32_FORMAT "/Free CodeCache:" SIZE_FORMAT "Kb", |
1491 _compile_id, this, CodeCache::nof_blobs(), CodeCache::unallocated_capacity()/1024); | |
0 | 1492 } |
1493 | |
1494 // We need to deallocate any ExceptionCache data. | |
1495 // Note that we do not need to grab the nmethod lock for this, it | |
1496 // better be thread safe if we're disposing of it! | |
1497 ExceptionCache* ec = exception_cache(); | |
1498 set_exception_cache(NULL); | |
1499 while(ec != NULL) { | |
1500 ExceptionCache* next = ec->next(); | |
1501 delete ec; | |
1502 ec = next; | |
1503 } | |
1504 | |
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1505 if (on_scavenge_root_list()) { |
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1506 CodeCache::drop_scavenge_root_nmethod(this); |
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1507 } |
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1508 |
1202 | 1509 if (is_speculatively_disconnected()) { |
1510 CodeCache::remove_saved_code(this); | |
1511 } | |
1512 | |
1692 | 1513 #ifdef SHARK |
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1514 ((SharkCompiler *) compiler())->free_compiled_method(insts_begin()); |
1692 | 1515 #endif // SHARK |
1516 | |
0 | 1517 ((CodeBlob*)(this))->flush(); |
1518 | |
1519 CodeCache::free(this); | |
1520 } | |
1521 | |
1522 | |
1523 // | |
1524 // Notify all classes this nmethod is dependent on that it is no | |
1525 // longer dependent. This should only be called in two situations. | |
1526 // First, when a nmethod transitions to a zombie all dependents need | |
1527 // to be clear. Since zombification happens at a safepoint there's no | |
1528 // synchronization issues. The second place is a little more tricky. | |
1529 // During phase 1 of mark sweep class unloading may happen and as a | |
1530 // result some nmethods may get unloaded. In this case the flushing | |
1531 // of dependencies must happen during phase 1 since after GC any | |
1532 // dependencies in the unloaded nmethod won't be updated, so | |
1533 // traversing the dependency information in unsafe. In that case this | |
1534 // function is called with a non-NULL argument and this function only | |
1535 // notifies instanceKlasses that are reachable | |
1536 | |
1537 void nmethod::flush_dependencies(BoolObjectClosure* is_alive) { | |
1538
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1538 assert_locked_or_safepoint(CodeCache_lock); |
0 | 1539 assert(Universe::heap()->is_gc_active() == (is_alive != NULL), |
1540 "is_alive is non-NULL if and only if we are called during GC"); | |
1541 if (!has_flushed_dependencies()) { | |
1542 set_has_flushed_dependencies(); | |
1543 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
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1544 Klass* klass = deps.context_type(); |
0 | 1545 if (klass == NULL) continue; // ignore things like evol_method |
1546 | |
1547 // During GC the is_alive closure is non-NULL, and is used to | |
1548 // determine liveness of dependees that need to be updated. | |
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1549 if (is_alive == NULL || klass->is_loader_alive(is_alive)) { |
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1550 InstanceKlass::cast(klass)->remove_dependent_nmethod(this); |
0 | 1551 } |
1552 } | |
1553 } | |
1554 } | |
1555 | |
1556 | |
1557 // If this oop is not live, the nmethod can be unloaded. | |
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1558 bool nmethod::can_unload(BoolObjectClosure* is_alive, oop* root, bool unloading_occurred) { |
0 | 1559 assert(root != NULL, "just checking"); |
1560 oop obj = *root; | |
1561 if (obj == NULL || is_alive->do_object_b(obj)) { | |
1562 return false; | |
1563 } | |
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1564 |
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1565 // If ScavengeRootsInCode is true, an nmethod might be unloaded |
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1566 // simply because one of its constant oops has gone dead. |
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1567 // No actual classes need to be unloaded in order for this to occur. |
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1568 assert(unloading_occurred || ScavengeRootsInCode, "Inconsistency in unloading"); |
0 | 1569 make_unloaded(is_alive, obj); |
1570 return true; | |
1571 } | |
1572 | |
1573 // ------------------------------------------------------------------ | |
1574 // post_compiled_method_load_event | |
1575 // new method for install_code() path | |
1576 // Transfer information from compilation to jvmti | |
1577 void nmethod::post_compiled_method_load_event() { | |
1578 | |
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1579 Method* moop = method(); |
4006 | 1580 #ifndef USDT2 |
0 | 1581 HS_DTRACE_PROBE8(hotspot, compiled__method__load, |
1582 moop->klass_name()->bytes(), | |
1583 moop->klass_name()->utf8_length(), | |
1584 moop->name()->bytes(), | |
1585 moop->name()->utf8_length(), | |
1586 moop->signature()->bytes(), | |
1587 moop->signature()->utf8_length(), | |
1748 | 1588 insts_begin(), insts_size()); |
4006 | 1589 #else /* USDT2 */ |
1590 HOTSPOT_COMPILED_METHOD_LOAD( | |
1591 (char *) moop->klass_name()->bytes(), | |
1592 moop->klass_name()->utf8_length(), | |
1593 (char *) moop->name()->bytes(), | |
1594 moop->name()->utf8_length(), | |
1595 (char *) moop->signature()->bytes(), | |
1596 moop->signature()->utf8_length(), | |
1597 insts_begin(), insts_size()); | |
1598 #endif /* USDT2 */ | |
0 | 1599 |
1616
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1600 if (JvmtiExport::should_post_compiled_method_load() || |
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1601 JvmtiExport::should_post_compiled_method_unload()) { |
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1602 get_and_cache_jmethod_id(); |
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|
1603 } |
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1604 |
0 | 1605 if (JvmtiExport::should_post_compiled_method_load()) { |
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1606 // Let the Service thread (which is a real Java thread) post the event |
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1607 MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag); |
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1608 JvmtiDeferredEventQueue::enqueue( |
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1609 JvmtiDeferredEvent::compiled_method_load_event(this)); |
0 | 1610 } |
1611 } | |
1612 | |
1616
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1613 jmethodID nmethod::get_and_cache_jmethod_id() { |
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1614 if (_jmethod_id == NULL) { |
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1615 // Cache the jmethod_id since it can no longer be looked up once the |
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1616 // method itself has been marked for unloading. |
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1617 _jmethod_id = method()->jmethod_id(); |
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1618 } |
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1619 return _jmethod_id; |
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1620 } |
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1621 |
0 | 1622 void nmethod::post_compiled_method_unload() { |
1577
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1623 if (unload_reported()) { |
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1624 // During unloading we transition to unloaded and then to zombie |
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1625 // and the unloading is reported during the first transition. |
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1626 return; |
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1627 } |
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1628 |
0 | 1629 assert(_method != NULL && !is_unloaded(), "just checking"); |
1630 DTRACE_METHOD_UNLOAD_PROBE(method()); | |
1631 | |
1632 // If a JVMTI agent has enabled the CompiledMethodUnload event then | |
1616
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1633 // post the event. Sometime later this nmethod will be made a zombie |
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1634 // by the sweeper but the Method* will not be valid at that point. |
1616
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1635 // If the _jmethod_id is null then no load event was ever requested |
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1636 // so don't bother posting the unload. The main reason for this is |
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1637 // that the jmethodID is a weak reference to the Method* so if |
1616
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1638 // it's being unloaded there's no way to look it up since the weak |
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1639 // ref will have been cleared. |
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1640 if (_jmethod_id != NULL && JvmtiExport::should_post_compiled_method_unload()) { |
0 | 1641 assert(!unload_reported(), "already unloaded"); |
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1642 JvmtiDeferredEvent event = |
2342
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1643 JvmtiDeferredEvent::compiled_method_unload_event(this, |
2195
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1644 _jmethod_id, insts_begin()); |
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1645 if (SafepointSynchronize::is_at_safepoint()) { |
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1646 // Don't want to take the queueing lock. Add it as pending and |
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1647 // it will get enqueued later. |
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1648 JvmtiDeferredEventQueue::add_pending_event(event); |
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1649 } else { |
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1650 MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag); |
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1651 JvmtiDeferredEventQueue::enqueue(event); |
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1652 } |
0 | 1653 } |
1654 | |
1655 // The JVMTI CompiledMethodUnload event can be enabled or disabled at | |
1656 // any time. As the nmethod is being unloaded now we mark it has | |
1657 // having the unload event reported - this will ensure that we don't | |
1658 // attempt to report the event in the unlikely scenario where the | |
1659 // event is enabled at the time the nmethod is made a zombie. | |
1660 set_unload_reported(); | |
1661 } | |
1662 | |
1663 // This is called at the end of the strong tracing/marking phase of a | |
1664 // GC to unload an nmethod if it contains otherwise unreachable | |
1665 // oops. | |
1666 | |
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1667 void nmethod::do_unloading(BoolObjectClosure* is_alive, bool unloading_occurred) { |
0 | 1668 // Make sure the oop's ready to receive visitors |
1669 assert(!is_zombie() && !is_unloaded(), | |
1670 "should not call follow on zombie or unloaded nmethod"); | |
1671 | |
1672 // If the method is not entrant then a JMP is plastered over the | |
1673 // first few bytes. If an oop in the old code was there, that oop | |
1674 // should not get GC'd. Skip the first few bytes of oops on | |
1675 // not-entrant methods. | |
1676 address low_boundary = verified_entry_point(); | |
1677 if (is_not_entrant()) { | |
1678 low_boundary += NativeJump::instruction_size; | |
1679 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
1680 // (See comment above.) | |
1681 } | |
1682 | |
1683 // The RedefineClasses() API can cause the class unloading invariant | |
1684 // to no longer be true. See jvmtiExport.hpp for details. | |
1685 // Also, leave a debugging breadcrumb in local flag. | |
1686 bool a_class_was_redefined = JvmtiExport::has_redefined_a_class(); | |
1687 if (a_class_was_redefined) { | |
1688 // This set of the unloading_occurred flag is done before the | |
1689 // call to post_compiled_method_unload() so that the unloading | |
1690 // of this nmethod is reported. | |
1691 unloading_occurred = true; | |
1692 } | |
1693 | |
9707 | 1694 #ifdef GRAAL |
1695 // Follow Graal method | |
1696 if (_graal_installed_code != NULL) { | |
1697 if (HotSpotNmethod::isDefault(_graal_installed_code)) { | |
1698 if (!is_alive->do_object_b(_graal_installed_code)) { | |
1699 _graal_installed_code = NULL; | |
1700 } | |
1701 } else { | |
1702 if (can_unload(is_alive, (oop*)&_graal_installed_code, unloading_occurred)) { | |
1703 return; | |
1704 } | |
1705 } | |
1706 } | |
1707 #endif | |
1708 | |
0 | 1709 // Exception cache |
1710 ExceptionCache* ec = exception_cache(); | |
1711 while (ec != NULL) { | |
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1712 Klass* ex_klass = ec->exception_type(); |
0 | 1713 ExceptionCache* next_ec = ec->next(); |
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1714 if (ex_klass != NULL && !ex_klass->is_loader_alive(is_alive)) { |
0 | 1715 remove_from_exception_cache(ec); |
1716 } | |
1717 ec = next_ec; | |
1718 } | |
1719 | |
1720 // If class unloading occurred we first iterate over all inline caches and | |
1721 // clear ICs where the cached oop is referring to an unloaded klass or method. | |
1722 // The remaining live cached oops will be traversed in the relocInfo::oop_type | |
1723 // iteration below. | |
1724 if (unloading_occurred) { | |
1725 RelocIterator iter(this, low_boundary); | |
1726 while(iter.next()) { | |
1727 if (iter.type() == relocInfo::virtual_call_type) { | |
1728 CompiledIC *ic = CompiledIC_at(iter.reloc()); | |
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1729 if (ic->is_icholder_call()) { |
0 | 1730 // The only exception is compiledICHolder oops which may |
1731 // yet be marked below. (We check this further below). | |
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1732 CompiledICHolder* cichk_oop = ic->cached_icholder(); |
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1733 if (cichk_oop->holder_method()->method_holder()->is_loader_alive(is_alive) && |
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1734 cichk_oop->holder_klass()->is_loader_alive(is_alive)) { |
0 | 1735 continue; |
1736 } | |
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1737 } else { |
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1738 Metadata* ic_oop = ic->cached_metadata(); |
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1739 if (ic_oop != NULL) { |
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1740 if (ic_oop->is_klass()) { |
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1741 if (((Klass*)ic_oop)->is_loader_alive(is_alive)) { |
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1742 continue; |
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|
1743 } |
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1744 } else if (ic_oop->is_method()) { |
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1745 if (((Method*)ic_oop)->method_holder()->is_loader_alive(is_alive)) { |
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1746 continue; |
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|
1747 } |
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1748 } else { |
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1749 ShouldNotReachHere(); |
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1750 } |
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1751 } |
0 | 1752 } |
1753 ic->set_to_clean(); | |
1754 } | |
1755 } | |
1756 } | |
1757 | |
1758 // Compiled code | |
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1759 { |
0 | 1760 RelocIterator iter(this, low_boundary); |
1761 while (iter.next()) { | |
1762 if (iter.type() == relocInfo::oop_type) { | |
1763 oop_Relocation* r = iter.oop_reloc(); | |
1764 // In this loop, we must only traverse those oops directly embedded in | |
1765 // the code. Other oops (oop_index>0) are seen as part of scopes_oops. | |
1766 assert(1 == (r->oop_is_immediate()) + | |
1767 (r->oop_addr() >= oops_begin() && r->oop_addr() < oops_end()), | |
1768 "oop must be found in exactly one place"); | |
1769 if (r->oop_is_immediate() && r->oop_value() != NULL) { | |
6787
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1770 if (can_unload(is_alive, r->oop_addr(), unloading_occurred)) { |
0 | 1771 return; |
1772 } | |
1773 } | |
1774 } | |
1775 } | |
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1776 } |
0 | 1777 |
1778 | |
1779 // Scopes | |
1780 for (oop* p = oops_begin(); p < oops_end(); p++) { | |
1781 if (*p == Universe::non_oop_word()) continue; // skip non-oops | |
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1782 if (can_unload(is_alive, p, unloading_occurred)) { |
0 | 1783 return; |
1784 } | |
1785 } | |
1786 | |
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1787 // Ensure that all metadata is still alive |
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1788 verify_metadata_loaders(low_boundary, is_alive); |
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1789 } |
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1790 |
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1791 #ifdef ASSERT |
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1792 |
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1793 class CheckClass : AllStatic { |
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1794 static BoolObjectClosure* _is_alive; |
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1795 |
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1796 // Check class_loader is alive for this bit of metadata. |
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1797 static void check_class(Metadata* md) { |
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1798 Klass* klass = NULL; |
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1799 if (md->is_klass()) { |
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1800 klass = ((Klass*)md); |
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1801 } else if (md->is_method()) { |
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1802 klass = ((Method*)md)->method_holder(); |
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1803 } else if (md->is_methodData()) { |
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1804 klass = ((MethodData*)md)->method()->method_holder(); |
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1805 } else { |
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1806 md->print(); |
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1807 ShouldNotReachHere(); |
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1808 } |
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1809 assert(klass->is_loader_alive(_is_alive), "must be alive"); |
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1810 } |
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1811 public: |
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1812 static void do_check_class(BoolObjectClosure* is_alive, nmethod* nm) { |
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1813 assert(SafepointSynchronize::is_at_safepoint(), "this is only ok at safepoint"); |
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1814 _is_alive = is_alive; |
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1815 nm->metadata_do(check_class); |
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1816 } |
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1817 }; |
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1818 |
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1819 // This is called during a safepoint so can use static data |
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1820 BoolObjectClosure* CheckClass::_is_alive = NULL; |
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1821 #endif // ASSERT |
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1822 |
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1823 |
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1824 // Processing of oop references should have been sufficient to keep |
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1825 // all strong references alive. Any weak references should have been |
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1826 // cleared as well. Visit all the metadata and ensure that it's |
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1827 // really alive. |
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1828 void nmethod::verify_metadata_loaders(address low_boundary, BoolObjectClosure* is_alive) { |
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1829 #ifdef ASSERT |
0 | 1830 RelocIterator iter(this, low_boundary); |
1831 while (iter.next()) { | |
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1832 // static_stub_Relocations may have dangling references to |
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1833 // Method*s so trim them out here. Otherwise it looks like |
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1834 // compiled code is maintaining a link to dead metadata. |
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1835 address static_call_addr = NULL; |
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1836 if (iter.type() == relocInfo::opt_virtual_call_type) { |
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1837 CompiledIC* cic = CompiledIC_at(iter.reloc()); |
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1838 if (!cic->is_call_to_interpreted()) { |
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1839 static_call_addr = iter.addr(); |
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1840 } |
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1841 } else if (iter.type() == relocInfo::static_call_type) { |
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1842 CompiledStaticCall* csc = compiledStaticCall_at(iter.reloc()); |
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1843 if (!csc->is_call_to_interpreted()) { |
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1844 static_call_addr = iter.addr(); |
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1845 } |
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1846 } |
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1847 if (static_call_addr != NULL) { |
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1848 RelocIterator sciter(this, low_boundary); |
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1849 while (sciter.next()) { |
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1850 if (sciter.type() == relocInfo::static_stub_type && |
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1851 sciter.static_stub_reloc()->static_call() == static_call_addr) { |
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1852 sciter.static_stub_reloc()->clear_inline_cache(); |
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1853 } |
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1854 } |
0 | 1855 } |
1856 } | |
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1857 // Check that the metadata embedded in the nmethod is alive |
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1858 CheckClass::do_check_class(is_alive, this); |
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1859 #endif |
0 | 1860 } |
1861 | |
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1862 #ifdef GRAAL |
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1863 void nmethod::mark_graal_reference(OopClosure* f) { |
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1864 if (_graal_installed_code != NULL) { |
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1865 f->do_oop((oop*) &_graal_installed_code); |
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1866 } |
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1867 } |
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1868 #endif |
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1869 |
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1870 // Iterate over metadata calling this function. Used by RedefineClasses |
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1871 void nmethod::metadata_do(void f(Metadata*)) { |
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1872 address low_boundary = verified_entry_point(); |
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1873 if (is_not_entrant()) { |
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1874 low_boundary += NativeJump::instruction_size; |
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1875 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. |
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1876 // (See comment above.) |
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1877 } |
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1878 { |
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1879 // Visit all immediate references that are embedded in the instruction stream. |
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1880 RelocIterator iter(this, low_boundary); |
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1881 while (iter.next()) { |
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1882 if (iter.type() == relocInfo::metadata_type ) { |
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1883 metadata_Relocation* r = iter.metadata_reloc(); |
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1884 // In this lmetadata, we must only follow those metadatas directly embedded in |
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1885 // the code. Other metadatas (oop_index>0) are seen as part of |
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1886 // the metadata section below. |
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1887 assert(1 == (r->metadata_is_immediate()) + |
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1888 (r->metadata_addr() >= metadata_begin() && r->metadata_addr() < metadata_end()), |
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1889 "metadata must be found in exactly one place"); |
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1890 if (r->metadata_is_immediate() && r->metadata_value() != NULL) { |
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1891 Metadata* md = r->metadata_value(); |
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1892 f(md); |
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1893 } |
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1894 } else if (iter.type() == relocInfo::virtual_call_type) { |
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1895 // Check compiledIC holders associated with this nmethod |
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1896 CompiledIC *ic = CompiledIC_at(iter.reloc()); |
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1897 if (ic->is_icholder_call()) { |
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1898 CompiledICHolder* cichk = ic->cached_icholder(); |
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1899 f(cichk->holder_method()); |
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1900 f(cichk->holder_klass()); |
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1901 } else { |
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1902 Metadata* ic_oop = ic->cached_metadata(); |
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1903 if (ic_oop != NULL) { |
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1904 f(ic_oop); |
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1905 } |
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1906 } |
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1907 } |
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1908 } |
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1909 } |
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1910 |
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1911 // Visit the metadata section |
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1912 for (Metadata** p = metadata_begin(); p < metadata_end(); p++) { |
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1913 if (*p == Universe::non_oop_word() || *p == NULL) continue; // skip non-oops |
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1914 Metadata* md = *p; |
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1915 f(md); |
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1916 } |
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1917 |
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1918 // Call function Method*, not embedded in these other places. |
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1919 if (_method != NULL) f(_method); |
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1920 } |
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1921 |
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1922 |
941 | 1923 // This method is called twice during GC -- once while |
1924 // tracing the "active" nmethods on thread stacks during | |
1925 // the (strong) marking phase, and then again when walking | |
1926 // the code cache contents during the weak roots processing | |
1927 // phase. The two uses are distinguished by means of the | |
994
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1928 // 'do_strong_roots_only' flag, which is true in the first |
941 | 1929 // case. We want to walk the weak roots in the nmethod |
1930 // only in the second case. The weak roots in the nmethod | |
1931 // are the oops in the ExceptionCache and the InlineCache | |
1932 // oops. | |
994
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1933 void nmethod::oops_do(OopClosure* f, bool do_strong_roots_only) { |
0 | 1934 // make sure the oops ready to receive visitors |
1935 assert(!is_zombie() && !is_unloaded(), | |
1936 "should not call follow on zombie or unloaded nmethod"); | |
1937 | |
1938 // If the method is not entrant or zombie then a JMP is plastered over the | |
1939 // first few bytes. If an oop in the old code was there, that oop | |
1940 // should not get GC'd. Skip the first few bytes of oops on | |
1941 // not-entrant methods. | |
1942 address low_boundary = verified_entry_point(); | |
1943 if (is_not_entrant()) { | |
1944 low_boundary += NativeJump::instruction_size; | |
1945 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
1946 // (See comment above.) | |
1947 } | |
1948 | |
9707 | 1949 #ifdef GRAAL |
1950 if (_graal_installed_code != NULL) { | |
1951 f->do_oop((oop*) &_graal_installed_code); | |
1952 } | |
1953 if (_triggered_deoptimizations != NULL) { | |
1954 f->do_oop((oop*) &_triggered_deoptimizations); | |
1955 } | |
1956 #endif | |
1957 | |
0 | 1958 RelocIterator iter(this, low_boundary); |
941 | 1959 |
0 | 1960 while (iter.next()) { |
1961 if (iter.type() == relocInfo::oop_type ) { | |
1962 oop_Relocation* r = iter.oop_reloc(); | |
1963 // In this loop, we must only follow those oops directly embedded in | |
1964 // the code. Other oops (oop_index>0) are seen as part of scopes_oops. | |
941 | 1965 assert(1 == (r->oop_is_immediate()) + |
1966 (r->oop_addr() >= oops_begin() && r->oop_addr() < oops_end()), | |
1967 "oop must be found in exactly one place"); | |
0 | 1968 if (r->oop_is_immediate() && r->oop_value() != NULL) { |
1969 f->do_oop(r->oop_addr()); | |
1970 } | |
1971 } | |
1972 } | |
1973 | |
1974 // Scopes | |
989
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1975 // This includes oop constants not inlined in the code stream. |
0 | 1976 for (oop* p = oops_begin(); p < oops_end(); p++) { |
1977 if (*p == Universe::non_oop_word()) continue; // skip non-oops | |
1978 f->do_oop(p); | |
1979 } | |
1980 } | |
1981 | |
989
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1982 #define NMETHOD_SENTINEL ((nmethod*)badAddress) |
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1983 |
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1984 nmethod* volatile nmethod::_oops_do_mark_nmethods; |
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1985 |
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1986 // An nmethod is "marked" if its _mark_link is set non-null. |
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1987 // Even if it is the end of the linked list, it will have a non-null link value, |
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1988 // as long as it is on the list. |
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1989 // This code must be MP safe, because it is used from parallel GC passes. |
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1990 bool nmethod::test_set_oops_do_mark() { |
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1991 assert(nmethod::oops_do_marking_is_active(), "oops_do_marking_prologue must be called"); |
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1992 nmethod* observed_mark_link = _oops_do_mark_link; |
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1993 if (observed_mark_link == NULL) { |
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1994 // Claim this nmethod for this thread to mark. |
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1995 observed_mark_link = (nmethod*) |
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1996 Atomic::cmpxchg_ptr(NMETHOD_SENTINEL, &_oops_do_mark_link, NULL); |
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1997 if (observed_mark_link == NULL) { |
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1998 |
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1999 // Atomically append this nmethod (now claimed) to the head of the list: |
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2000 nmethod* observed_mark_nmethods = _oops_do_mark_nmethods; |
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2001 for (;;) { |
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2002 nmethod* required_mark_nmethods = observed_mark_nmethods; |
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2003 _oops_do_mark_link = required_mark_nmethods; |
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2004 observed_mark_nmethods = (nmethod*) |
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2005 Atomic::cmpxchg_ptr(this, &_oops_do_mark_nmethods, required_mark_nmethods); |
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2006 if (observed_mark_nmethods == required_mark_nmethods) |
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2007 break; |
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2008 } |
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2009 // Mark was clear when we first saw this guy. |
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2010 NOT_PRODUCT(if (TraceScavenge) print_on(tty, "oops_do, mark")); |
989
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2011 return false; |
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2012 } |
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2013 } |
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2014 // On fall through, another racing thread marked this nmethod before we did. |
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2015 return true; |
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2016 } |
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2017 |
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2018 void nmethod::oops_do_marking_prologue() { |
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2019 NOT_PRODUCT(if (TraceScavenge) tty->print_cr("[oops_do_marking_prologue")); |
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2020 assert(_oops_do_mark_nmethods == NULL, "must not call oops_do_marking_prologue twice in a row"); |
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2021 // We use cmpxchg_ptr instead of regular assignment here because the user |
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2022 // may fork a bunch of threads, and we need them all to see the same state. |
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2023 void* observed = Atomic::cmpxchg_ptr(NMETHOD_SENTINEL, &_oops_do_mark_nmethods, NULL); |
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2024 guarantee(observed == NULL, "no races in this sequential code"); |
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2025 } |
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2026 |
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2027 void nmethod::oops_do_marking_epilogue() { |
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2028 assert(_oops_do_mark_nmethods != NULL, "must not call oops_do_marking_epilogue twice in a row"); |
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2029 nmethod* cur = _oops_do_mark_nmethods; |
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2030 while (cur != NMETHOD_SENTINEL) { |
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2031 assert(cur != NULL, "not NULL-terminated"); |
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2032 nmethod* next = cur->_oops_do_mark_link; |
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2033 cur->_oops_do_mark_link = NULL; |
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2034 cur->fix_oop_relocations(); |
2405
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2035 NOT_PRODUCT(if (TraceScavenge) cur->print_on(tty, "oops_do, unmark")); |
989
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2036 cur = next; |
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2037 } |
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2038 void* required = _oops_do_mark_nmethods; |
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2039 void* observed = Atomic::cmpxchg_ptr(NULL, &_oops_do_mark_nmethods, required); |
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2040 guarantee(observed == required, "no races in this sequential code"); |
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2041 NOT_PRODUCT(if (TraceScavenge) tty->print_cr("oops_do_marking_epilogue]")); |
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2042 } |
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2043 |
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2044 class DetectScavengeRoot: public OopClosure { |
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2045 bool _detected_scavenge_root; |
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2046 public: |
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2047 DetectScavengeRoot() : _detected_scavenge_root(false) |
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2048 { NOT_PRODUCT(_print_nm = NULL); } |
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2049 bool detected_scavenge_root() { return _detected_scavenge_root; } |
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2050 virtual void do_oop(oop* p) { |
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2051 if ((*p) != NULL && (*p)->is_scavengable()) { |
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2052 NOT_PRODUCT(maybe_print(p)); |
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2053 _detected_scavenge_root = true; |
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2054 } |
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2055 } |
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2056 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
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2057 |
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2058 #ifndef PRODUCT |
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2059 nmethod* _print_nm; |
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2060 void maybe_print(oop* p) { |
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2061 if (_print_nm == NULL) return; |
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2062 if (!_detected_scavenge_root) _print_nm->print_on(tty, "new scavenge root"); |
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2063 tty->print_cr(""PTR_FORMAT"[offset=%d] detected scavengable oop "PTR_FORMAT" (found at "PTR_FORMAT")", |
989
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2064 _print_nm, (int)((intptr_t)p - (intptr_t)_print_nm), |
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2065 (intptr_t)(*p), (intptr_t)p); |
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2066 (*p)->print(); |
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2067 } |
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2068 #endif //PRODUCT |
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2069 }; |
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2070 |
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2071 bool nmethod::detect_scavenge_root_oops() { |
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2072 DetectScavengeRoot detect_scavenge_root; |
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2073 NOT_PRODUCT(if (TraceScavenge) detect_scavenge_root._print_nm = this); |
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2074 oops_do(&detect_scavenge_root); |
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2075 return detect_scavenge_root.detected_scavenge_root(); |
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2076 } |
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2077 |
0 | 2078 // Method that knows how to preserve outgoing arguments at call. This method must be |
2079 // called with a frame corresponding to a Java invoke | |
2080 void nmethod::preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { | |
1692 | 2081 #ifndef SHARK |
0 | 2082 if (!method()->is_native()) { |
2083 SimpleScopeDesc ssd(this, fr.pc()); | |
2142 | 2084 Bytecode_invoke call(ssd.method(), ssd.bci()); |
10390 | 2085 bool has_receiver = call.has_receiver(); |
2086 bool has_appendix = call.has_appendix(); | |
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2087 Symbol* signature = call.signature(); |
10390 | 2088 fr.oops_compiled_arguments_do(signature, has_receiver, has_appendix, reg_map, f); |
0 | 2089 } |
1692 | 2090 #endif // !SHARK |
0 | 2091 } |
2092 | |
2093 | |
2094 oop nmethod::embeddedOop_at(u_char* p) { | |
2349
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2095 RelocIterator iter(this, p, p + 1); |
0 | 2096 while (iter.next()) |
2097 if (iter.type() == relocInfo::oop_type) { | |
2098 return iter.oop_reloc()->oop_value(); | |
2099 } | |
2100 return NULL; | |
2101 } | |
2102 | |
2103 | |
2104 inline bool includes(void* p, void* from, void* to) { | |
2105 return from <= p && p < to; | |
2106 } | |
2107 | |
2108 | |
2109 void nmethod::copy_scopes_pcs(PcDesc* pcs, int count) { | |
2110 assert(count >= 2, "must be sentinel values, at least"); | |
2111 | |
2112 #ifdef ASSERT | |
2113 // must be sorted and unique; we do a binary search in find_pc_desc() | |
2114 int prev_offset = pcs[0].pc_offset(); | |
2115 assert(prev_offset == PcDesc::lower_offset_limit, | |
2116 "must start with a sentinel"); | |
2117 for (int i = 1; i < count; i++) { | |
2118 int this_offset = pcs[i].pc_offset(); | |
2119 assert(this_offset > prev_offset, "offsets must be sorted"); | |
2120 prev_offset = this_offset; | |
2121 } | |
2122 assert(prev_offset == PcDesc::upper_offset_limit, | |
2123 "must end with a sentinel"); | |
2124 #endif //ASSERT | |
2125 | |
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2126 // Search for MethodHandle invokes and tag the nmethod. |
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2127 for (int i = 0; i < count; i++) { |
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2128 if (pcs[i].is_method_handle_invoke()) { |
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2129 set_has_method_handle_invokes(true); |
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2130 break; |
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2131 } |
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2132 } |
2083
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2133 assert(has_method_handle_invokes() == (_deoptimize_mh_offset != -1), "must have deopt mh handler"); |
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2134 |
0 | 2135 int size = count * sizeof(PcDesc); |
2136 assert(scopes_pcs_size() >= size, "oob"); | |
2137 memcpy(scopes_pcs_begin(), pcs, size); | |
2138 | |
2139 // Adjust the final sentinel downward. | |
2140 PcDesc* last_pc = &scopes_pcs_begin()[count-1]; | |
2141 assert(last_pc->pc_offset() == PcDesc::upper_offset_limit, "sanity"); | |
1748 | 2142 last_pc->set_pc_offset(content_size() + 1); |
0 | 2143 for (; last_pc + 1 < scopes_pcs_end(); last_pc += 1) { |
2144 // Fill any rounding gaps with copies of the last record. | |
2145 last_pc[1] = last_pc[0]; | |
2146 } | |
2147 // The following assert could fail if sizeof(PcDesc) is not | |
2148 // an integral multiple of oopSize (the rounding term). | |
2149 // If it fails, change the logic to always allocate a multiple | |
2150 // of sizeof(PcDesc), and fill unused words with copies of *last_pc. | |
2151 assert(last_pc + 1 == scopes_pcs_end(), "must match exactly"); | |
2152 } | |
2153 | |
2154 void nmethod::copy_scopes_data(u_char* buffer, int size) { | |
2155 assert(scopes_data_size() >= size, "oob"); | |
2156 memcpy(scopes_data_begin(), buffer, size); | |
2157 } | |
2158 | |
2159 | |
2160 #ifdef ASSERT | |
2161 static PcDesc* linear_search(nmethod* nm, int pc_offset, bool approximate) { | |
2162 PcDesc* lower = nm->scopes_pcs_begin(); | |
2163 PcDesc* upper = nm->scopes_pcs_end(); | |
2164 lower += 1; // exclude initial sentinel | |
2165 PcDesc* res = NULL; | |
2166 for (PcDesc* p = lower; p < upper; p++) { | |
2167 NOT_PRODUCT(--nmethod_stats.pc_desc_tests); // don't count this call to match_desc | |
2168 if (match_desc(p, pc_offset, approximate)) { | |
2169 if (res == NULL) | |
2170 res = p; | |
2171 else | |
2172 res = (PcDesc*) badAddress; | |
2173 } | |
2174 } | |
2175 return res; | |
2176 } | |
2177 #endif | |
2178 | |
2179 | |
2180 // Finds a PcDesc with real-pc equal to "pc" | |
2181 PcDesc* nmethod::find_pc_desc_internal(address pc, bool approximate) { | |
1748 | 2182 address base_address = code_begin(); |
0 | 2183 if ((pc < base_address) || |
2184 (pc - base_address) >= (ptrdiff_t) PcDesc::upper_offset_limit) { | |
2185 return NULL; // PC is wildly out of range | |
2186 } | |
2187 int pc_offset = (int) (pc - base_address); | |
2188 | |
2189 // Check the PcDesc cache if it contains the desired PcDesc | |
2190 // (This as an almost 100% hit rate.) | |
2191 PcDesc* res = _pc_desc_cache.find_pc_desc(pc_offset, approximate); | |
2192 if (res != NULL) { | |
2193 assert(res == linear_search(this, pc_offset, approximate), "cache ok"); | |
2194 return res; | |
2195 } | |
2196 | |
2197 // Fallback algorithm: quasi-linear search for the PcDesc | |
2198 // Find the last pc_offset less than the given offset. | |
2199 // The successor must be the required match, if there is a match at all. | |
2200 // (Use a fixed radix to avoid expensive affine pointer arithmetic.) | |
2201 PcDesc* lower = scopes_pcs_begin(); | |
2202 PcDesc* upper = scopes_pcs_end(); | |
2203 upper -= 1; // exclude final sentinel | |
2204 if (lower >= upper) return NULL; // native method; no PcDescs at all | |
2205 | |
2206 #define assert_LU_OK \ | |
2207 /* invariant on lower..upper during the following search: */ \ | |
2208 assert(lower->pc_offset() < pc_offset, "sanity"); \ | |
2209 assert(upper->pc_offset() >= pc_offset, "sanity") | |
2210 assert_LU_OK; | |
2211 | |
2212 // Use the last successful return as a split point. | |
2213 PcDesc* mid = _pc_desc_cache.last_pc_desc(); | |
2214 NOT_PRODUCT(++nmethod_stats.pc_desc_searches); | |
2215 if (mid->pc_offset() < pc_offset) { | |
2216 lower = mid; | |
2217 } else { | |
2218 upper = mid; | |
2219 } | |
2220 | |
2221 // Take giant steps at first (4096, then 256, then 16, then 1) | |
2222 const int LOG2_RADIX = 4 /*smaller steps in debug mode:*/ debug_only(-1); | |
2223 const int RADIX = (1 << LOG2_RADIX); | |
2224 for (int step = (1 << (LOG2_RADIX*3)); step > 1; step >>= LOG2_RADIX) { | |
2225 while ((mid = lower + step) < upper) { | |
2226 assert_LU_OK; | |
2227 NOT_PRODUCT(++nmethod_stats.pc_desc_searches); | |
2228 if (mid->pc_offset() < pc_offset) { | |
2229 lower = mid; | |
2230 } else { | |
2231 upper = mid; | |
2232 break; | |
2233 } | |
2234 } | |
2235 assert_LU_OK; | |
2236 } | |
2237 | |
2238 // Sneak up on the value with a linear search of length ~16. | |
2239 while (true) { | |
2240 assert_LU_OK; | |
2241 mid = lower + 1; | |
2242 NOT_PRODUCT(++nmethod_stats.pc_desc_searches); | |
2243 if (mid->pc_offset() < pc_offset) { | |
2244 lower = mid; | |
2245 } else { | |
2246 upper = mid; | |
2247 break; | |
2248 } | |
2249 } | |
2250 #undef assert_LU_OK | |
2251 | |
2252 if (match_desc(upper, pc_offset, approximate)) { | |
2253 assert(upper == linear_search(this, pc_offset, approximate), "search ok"); | |
2254 _pc_desc_cache.add_pc_desc(upper); | |
2255 return upper; | |
2256 } else { | |
2257 assert(NULL == linear_search(this, pc_offset, approximate), "search ok"); | |
2258 return NULL; | |
2259 } | |
2260 } | |
2261 | |
2262 | |
2263 bool nmethod::check_all_dependencies() { | |
2264 bool found_check = false; | |
2265 // wholesale check of all dependencies | |
2266 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
2267 if (deps.check_dependency() != NULL) { | |
2268 found_check = true; | |
2269 NOT_DEBUG(break); | |
2270 } | |
2271 } | |
2272 return found_check; // tell caller if we found anything | |
2273 } | |
2274 | |
2275 bool nmethod::check_dependency_on(DepChange& changes) { | |
2276 // What has happened: | |
2277 // 1) a new class dependee has been added | |
2278 // 2) dependee and all its super classes have been marked | |
2279 bool found_check = false; // set true if we are upset | |
2280 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
2281 // Evaluate only relevant dependencies. | |
2282 if (deps.spot_check_dependency_at(changes) != NULL) { | |
2283 found_check = true; | |
2284 NOT_DEBUG(break); | |
2285 } | |
2286 } | |
2287 return found_check; | |
2288 } | |
2289 | |
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2290 bool nmethod::is_evol_dependent_on(Klass* dependee) { |
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2291 InstanceKlass *dependee_ik = InstanceKlass::cast(dependee); |
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2292 Array<Method*>* dependee_methods = dependee_ik->methods(); |
0 | 2293 for (Dependencies::DepStream deps(this); deps.next(); ) { |
2294 if (deps.type() == Dependencies::evol_method) { | |
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2295 Method* method = deps.method_argument(0); |
0 | 2296 for (int j = 0; j < dependee_methods->length(); j++) { |
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2297 if (dependee_methods->at(j) == method) { |
0 | 2298 // RC_TRACE macro has an embedded ResourceMark |
2299 RC_TRACE(0x01000000, | |
2300 ("Found evol dependency of nmethod %s.%s(%s) compile_id=%d on method %s.%s(%s)", | |
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2301 _method->method_holder()->external_name(), |
0 | 2302 _method->name()->as_C_string(), |
2303 _method->signature()->as_C_string(), compile_id(), | |
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2304 method->method_holder()->external_name(), |
0 | 2305 method->name()->as_C_string(), |
2306 method->signature()->as_C_string())); | |
2307 if (TraceDependencies || LogCompilation) | |
2308 deps.log_dependency(dependee); | |
2309 return true; | |
2310 } | |
2311 } | |
2312 } | |
2313 } | |
2314 return false; | |
2315 } | |
2316 | |
2317 // Called from mark_for_deoptimization, when dependee is invalidated. | |
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2318 bool nmethod::is_dependent_on_method(Method* dependee) { |
0 | 2319 for (Dependencies::DepStream deps(this); deps.next(); ) { |
2320 if (deps.type() != Dependencies::evol_method) | |
2321 continue; | |
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2322 Method* method = deps.method_argument(0); |
0 | 2323 if (method == dependee) return true; |
2324 } | |
2325 return false; | |
2326 } | |
2327 | |
2328 | |
2329 bool nmethod::is_patchable_at(address instr_addr) { | |
1748 | 2330 assert(insts_contains(instr_addr), "wrong nmethod used"); |
0 | 2331 if (is_zombie()) { |
2332 // a zombie may never be patched | |
2333 return false; | |
2334 } | |
2335 return true; | |
2336 } | |
2337 | |
2338 | |
2339 address nmethod::continuation_for_implicit_exception(address pc) { | |
2340 // Exception happened outside inline-cache check code => we are inside | |
2341 // an active nmethod => use cpc to determine a return address | |
1748 | 2342 int exception_offset = pc - code_begin(); |
0 | 2343 int cont_offset = ImplicitExceptionTable(this).at( exception_offset ); |
2344 #ifdef ASSERT | |
2345 if (cont_offset == 0) { | |
2346 Thread* thread = ThreadLocalStorage::get_thread_slow(); | |
2347 ResetNoHandleMark rnm; // Might be called from LEAF/QUICK ENTRY | |
2348 HandleMark hm(thread); | |
2349 ResourceMark rm(thread); | |
2350 CodeBlob* cb = CodeCache::find_blob(pc); | |
2351 assert(cb != NULL && cb == this, ""); | |
2352 tty->print_cr("implicit exception happened at " INTPTR_FORMAT, pc); | |
2353 print(); | |
2354 method()->print_codes(); | |
2355 print_code(); | |
2356 print_pcs(); | |
2357 } | |
2358 #endif | |
1250 | 2359 if (cont_offset == 0) { |
2360 // Let the normal error handling report the exception | |
2361 return NULL; | |
2362 } | |
1748 | 2363 return code_begin() + cont_offset; |
0 | 2364 } |
2365 | |
2366 | |
2367 | |
2368 void nmethod_init() { | |
2369 // make sure you didn't forget to adjust the filler fields | |
2370 assert(sizeof(nmethod) % oopSize == 0, "nmethod size must be multiple of a word"); | |
2371 } | |
2372 | |
2373 | |
2374 //------------------------------------------------------------------------------------------- | |
2375 | |
2376 | |
2377 // QQQ might we make this work from a frame?? | |
2378 nmethodLocker::nmethodLocker(address pc) { | |
2379 CodeBlob* cb = CodeCache::find_blob(pc); | |
2380 guarantee(cb != NULL && cb->is_nmethod(), "bad pc for a nmethod found"); | |
2381 _nm = (nmethod*)cb; | |
2382 lock_nmethod(_nm); | |
2383 } | |
2384 | |
2342
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2385 // Only JvmtiDeferredEvent::compiled_method_unload_event() |
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2386 // should pass zombie_ok == true. |
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2387 void nmethodLocker::lock_nmethod(nmethod* nm, bool zombie_ok) { |
0 | 2388 if (nm == NULL) return; |
2389 Atomic::inc(&nm->_lock_count); | |
2342
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2390 guarantee(zombie_ok || !nm->is_zombie(), "cannot lock a zombie method"); |
0 | 2391 } |
2392 | |
2393 void nmethodLocker::unlock_nmethod(nmethod* nm) { | |
2394 if (nm == NULL) return; | |
2395 Atomic::dec(&nm->_lock_count); | |
2396 guarantee(nm->_lock_count >= 0, "unmatched nmethod lock/unlock"); | |
2397 } | |
2398 | |
1204 | 2399 |
2400 // ----------------------------------------------------------------------------- | |
2401 // nmethod::get_deopt_original_pc | |
2402 // | |
2403 // Return the original PC for the given PC if: | |
2404 // (a) the given PC belongs to a nmethod and | |
2405 // (b) it is a deopt PC | |
2406 address nmethod::get_deopt_original_pc(const frame* fr) { | |
2407 if (fr->cb() == NULL) return NULL; | |
2408 | |
2409 nmethod* nm = fr->cb()->as_nmethod_or_null(); | |
2410 if (nm != NULL && nm->is_deopt_pc(fr->pc())) | |
2411 return nm->get_original_pc(fr); | |
2412 | |
2413 return NULL; | |
0 | 2414 } |
2415 | |
2416 | |
2417 // ----------------------------------------------------------------------------- | |
1135
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2418 // MethodHandle |
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2419 |
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2420 bool nmethod::is_method_handle_return(address return_pc) { |
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2421 if (!has_method_handle_invokes()) return false; |
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2422 PcDesc* pd = pc_desc_at(return_pc); |
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2423 if (pd == NULL) |
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2424 return false; |
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2425 return pd->is_method_handle_invoke(); |
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2426 } |
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2427 |
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2428 |
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2429 // ----------------------------------------------------------------------------- |
0 | 2430 // Verification |
2431 | |
989
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2432 class VerifyOopsClosure: public OopClosure { |
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2433 nmethod* _nm; |
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2434 bool _ok; |
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2435 public: |
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2436 VerifyOopsClosure(nmethod* nm) : _nm(nm), _ok(true) { } |
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2437 bool ok() { return _ok; } |
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2438 virtual void do_oop(oop* p) { |
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2439 if ((*p) == NULL || (*p)->is_oop()) return; |
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2440 if (_ok) { |
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2441 _nm->print_nmethod(true); |
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2442 _ok = false; |
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2443 } |
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2444 tty->print_cr("*** non-oop "PTR_FORMAT" found at "PTR_FORMAT" (offset %d)", |
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2445 (intptr_t)(*p), (intptr_t)p, (int)((intptr_t)p - (intptr_t)_nm)); |
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2446 } |
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2447 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
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2448 }; |
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2449 |
0 | 2450 void nmethod::verify() { |
2451 | |
2452 // Hmm. OSR methods can be deopted but not marked as zombie or not_entrant | |
2453 // seems odd. | |
2454 | |
2455 if( is_zombie() || is_not_entrant() ) | |
2456 return; | |
2457 | |
2458 // Make sure all the entry points are correctly aligned for patching. | |
2459 NativeJump::check_verified_entry_alignment(entry_point(), verified_entry_point()); | |
2460 | |
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2461 // assert(method()->is_oop(), "must be valid"); |
0 | 2462 |
2463 ResourceMark rm; | |
2464 | |
2465 if (!CodeCache::contains(this)) { | |
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2466 fatal(err_msg("nmethod at " INTPTR_FORMAT " not in zone", this)); |
0 | 2467 } |
2468 | |
2469 if(is_native_method() ) | |
2470 return; | |
2471 | |
2472 nmethod* nm = CodeCache::find_nmethod(verified_entry_point()); | |
2473 if (nm != this) { | |
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2474 fatal(err_msg("findNMethod did not find this nmethod (" INTPTR_FORMAT ")", |
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2475 this)); |
0 | 2476 } |
2477 | |
2478 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
2479 if (! p->verify(this)) { | |
2480 tty->print_cr("\t\tin nmethod at " INTPTR_FORMAT " (pcs)", this); | |
2481 } | |
2482 } | |
2483 | |
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2484 VerifyOopsClosure voc(this); |
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2485 oops_do(&voc); |
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2486 assert(voc.ok(), "embedded oops must be OK"); |
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2487 verify_scavenge_root_oops(); |
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2488 |
0 | 2489 verify_scopes(); |
2490 } | |
2491 | |
2492 | |
2493 void nmethod::verify_interrupt_point(address call_site) { | |
2494 // This code does not work in release mode since | |
2495 // owns_lock only is available in debug mode. | |
2496 CompiledIC* ic = NULL; | |
2497 Thread *cur = Thread::current(); | |
2498 if (CompiledIC_lock->owner() == cur || | |
2499 ((cur->is_VM_thread() || cur->is_ConcurrentGC_thread()) && | |
2500 SafepointSynchronize::is_at_safepoint())) { | |
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2501 ic = CompiledIC_at(this, call_site); |
0 | 2502 CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops()); |
2503 } else { | |
2504 MutexLocker ml_verify (CompiledIC_lock); | |
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2505 ic = CompiledIC_at(this, call_site); |
0 | 2506 } |
9707 | 2507 |
0 | 2508 PcDesc* pd = pc_desc_at(ic->end_of_call()); |
2509 assert(pd != NULL, "PcDesc must exist"); | |
2510 for (ScopeDesc* sd = new ScopeDesc(this, pd->scope_decode_offset(), | |
9707 | 2511 pd->obj_decode_offset(), pd->should_reexecute(), pd->rethrow_exception(), |
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2512 pd->return_oop()); |
0 | 2513 !sd->is_top(); sd = sd->sender()) { |
2514 sd->verify(); | |
2515 } | |
2516 } | |
2517 | |
2518 void nmethod::verify_scopes() { | |
2519 if( !method() ) return; // Runtime stubs have no scope | |
2520 if (method()->is_native()) return; // Ignore stub methods. | |
2521 // iterate through all interrupt point | |
2522 // and verify the debug information is valid. | |
2523 RelocIterator iter((nmethod*)this); | |
2524 while (iter.next()) { | |
2525 address stub = NULL; | |
2526 switch (iter.type()) { | |
2527 case relocInfo::virtual_call_type: | |
2528 verify_interrupt_point(iter.addr()); | |
2529 break; | |
2530 case relocInfo::opt_virtual_call_type: | |
2531 stub = iter.opt_virtual_call_reloc()->static_stub(); | |
2532 verify_interrupt_point(iter.addr()); | |
2533 break; | |
2534 case relocInfo::static_call_type: | |
2535 stub = iter.static_call_reloc()->static_stub(); | |
2536 //verify_interrupt_point(iter.addr()); | |
2537 break; | |
2538 case relocInfo::runtime_call_type: | |
2539 address destination = iter.reloc()->value(); | |
2540 // Right now there is no way to find out which entries support | |
2541 // an interrupt point. It would be nice if we had this | |
2542 // information in a table. | |
2543 break; | |
2544 } | |
2545 assert(stub == NULL || stub_contains(stub), "static call stub outside stub section"); | |
2546 } | |
2547 } | |
2548 | |
2549 | |
2550 // ----------------------------------------------------------------------------- | |
2551 // Non-product code | |
2552 #ifndef PRODUCT | |
2553 | |
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2554 class DebugScavengeRoot: public OopClosure { |
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2555 nmethod* _nm; |
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2556 bool _ok; |
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2557 public: |
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2558 DebugScavengeRoot(nmethod* nm) : _nm(nm), _ok(true) { } |
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2559 bool ok() { return _ok; } |
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2560 virtual void do_oop(oop* p) { |
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2561 if ((*p) == NULL || !(*p)->is_scavengable()) return; |
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2562 if (_ok) { |
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2563 _nm->print_nmethod(true); |
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2564 _ok = false; |
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2565 } |
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2566 tty->print_cr("*** scavengable oop "PTR_FORMAT" found at "PTR_FORMAT" (offset %d)", |
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2567 (intptr_t)(*p), (intptr_t)p, (int)((intptr_t)p - (intptr_t)_nm)); |
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2568 (*p)->print(); |
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|
2569 } |
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2570 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
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2571 }; |
0 | 2572 |
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2573 void nmethod::verify_scavenge_root_oops() { |
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2574 if (!on_scavenge_root_list()) { |
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2575 // Actually look inside, to verify the claim that it's clean. |
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2576 DebugScavengeRoot debug_scavenge_root(this); |
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2577 oops_do(&debug_scavenge_root); |
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2578 if (!debug_scavenge_root.ok()) |
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2579 fatal("found an unadvertised bad scavengable oop in the code cache"); |
0 | 2580 } |
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2581 assert(scavenge_root_not_marked(), ""); |
0 | 2582 } |
2583 | |
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2584 #endif // PRODUCT |
0 | 2585 |
2586 // Printing operations | |
2587 | |
2588 void nmethod::print() const { | |
2589 ResourceMark rm; | |
2590 ttyLocker ttyl; // keep the following output all in one block | |
2591 | |
2405
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2592 tty->print("Compiled method "); |
0 | 2593 |
2594 if (is_compiled_by_c1()) { | |
2595 tty->print("(c1) "); | |
2596 } else if (is_compiled_by_c2()) { | |
2597 tty->print("(c2) "); | |
1692 | 2598 } else if (is_compiled_by_shark()) { |
2599 tty->print("(shark) "); | |
9707 | 2600 } else if (is_compiled_by_graal()) { |
2601 tty->print("(Graal) "); | |
0 | 2602 } else { |
2603 tty->print("(nm) "); | |
2604 } | |
2605 | |
2405
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2606 print_on(tty, NULL); |
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2607 |
0 | 2608 if (WizardMode) { |
2609 tty->print("((nmethod*) "INTPTR_FORMAT ") ", this); | |
2610 tty->print(" for method " INTPTR_FORMAT , (address)method()); | |
2611 tty->print(" { "); | |
2612 if (is_in_use()) tty->print("in_use "); | |
2613 if (is_not_entrant()) tty->print("not_entrant "); | |
2614 if (is_zombie()) tty->print("zombie "); | |
2615 if (is_unloaded()) tty->print("unloaded "); | |
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2616 if (on_scavenge_root_list()) tty->print("scavenge_root "); |
0 | 2617 tty->print_cr("}:"); |
2618 } | |
2619 if (size () > 0) tty->print_cr(" total in heap [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2620 (address)this, | |
2621 (address)this + size(), | |
2622 size()); | |
2623 if (relocation_size () > 0) tty->print_cr(" relocation [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2624 relocation_begin(), | |
2625 relocation_end(), | |
2626 relocation_size()); | |
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2627 if (consts_size () > 0) tty->print_cr(" constants [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
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2628 consts_begin(), |
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|
2629 consts_end(), |
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2630 consts_size()); |
1748 | 2631 if (insts_size () > 0) tty->print_cr(" main code [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
2632 insts_begin(), | |
2633 insts_end(), | |
2634 insts_size()); | |
0 | 2635 if (stub_size () > 0) tty->print_cr(" stub code [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
2636 stub_begin(), | |
2637 stub_end(), | |
2638 stub_size()); | |
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2639 if (oops_size () > 0) tty->print_cr(" oops [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
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2640 oops_begin(), |
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2641 oops_end(), |
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|
2642 oops_size()); |
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2643 if (metadata_size () > 0) tty->print_cr(" metadata [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
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2644 metadata_begin(), |
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2645 metadata_end(), |
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2646 metadata_size()); |
0 | 2647 if (scopes_data_size () > 0) tty->print_cr(" scopes data [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
2648 scopes_data_begin(), | |
2649 scopes_data_end(), | |
2650 scopes_data_size()); | |
2651 if (scopes_pcs_size () > 0) tty->print_cr(" scopes pcs [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2652 scopes_pcs_begin(), | |
2653 scopes_pcs_end(), | |
2654 scopes_pcs_size()); | |
2655 if (dependencies_size () > 0) tty->print_cr(" dependencies [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2656 dependencies_begin(), | |
2657 dependencies_end(), | |
2658 dependencies_size()); | |
2659 if (handler_table_size() > 0) tty->print_cr(" handler table [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2660 handler_table_begin(), | |
2661 handler_table_end(), | |
2662 handler_table_size()); | |
2663 if (nul_chk_table_size() > 0) tty->print_cr(" nul chk table [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2664 nul_chk_table_begin(), | |
2665 nul_chk_table_end(), | |
2666 nul_chk_table_size()); | |
2667 } | |
2668 | |
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2669 void nmethod::print_code() { |
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2670 HandleMark hm; |
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|
2671 ResourceMark m; |
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|
2672 Disassembler::decode(this); |
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|
2673 } |
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2674 |
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2675 |
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2676 #ifndef PRODUCT |
0 | 2677 |
2678 void nmethod::print_scopes() { | |
2679 // Find the first pc desc for all scopes in the code and print it. | |
2680 ResourceMark rm; | |
2681 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
2682 if (p->scope_decode_offset() == DebugInformationRecorder::serialized_null) | |
2683 continue; | |
2684 | |
2685 ScopeDesc* sd = scope_desc_at(p->real_pc(this)); | |
2686 sd->print_on(tty, p); | |
2687 } | |
2688 } | |
2689 | |
2690 void nmethod::print_dependencies() { | |
2691 ResourceMark rm; | |
2692 ttyLocker ttyl; // keep the following output all in one block | |
2693 tty->print_cr("Dependencies:"); | |
2694 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
2695 deps.print_dependency(); | |
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2696 Klass* ctxk = deps.context_type(); |
0 | 2697 if (ctxk != NULL) { |
6983 | 2698 if (ctxk->oop_is_instance() && ((InstanceKlass*)ctxk)->is_dependent_nmethod(this)) { |
2699 tty->print_cr(" [nmethod<=klass]%s", ctxk->external_name()); | |
0 | 2700 } |
2701 } | |
2702 deps.log_dependency(); // put it into the xml log also | |
2703 } | |
2704 } | |
2705 | |
2706 | |
2707 void nmethod::print_relocations() { | |
2708 ResourceMark m; // in case methods get printed via the debugger | |
2709 tty->print_cr("relocations:"); | |
2710 RelocIterator iter(this); | |
2711 iter.print(); | |
2712 if (UseRelocIndex) { | |
2713 jint* index_end = (jint*)relocation_end() - 1; | |
2714 jint index_size = *index_end; | |
2715 jint* index_start = (jint*)( (address)index_end - index_size ); | |
2716 tty->print_cr(" index @" INTPTR_FORMAT ": index_size=%d", index_start, index_size); | |
2717 if (index_size > 0) { | |
2718 jint* ip; | |
2719 for (ip = index_start; ip+2 <= index_end; ip += 2) | |
2720 tty->print_cr(" (%d %d) addr=" INTPTR_FORMAT " @" INTPTR_FORMAT, | |
2721 ip[0], | |
2722 ip[1], | |
2723 header_end()+ip[0], | |
2724 relocation_begin()-1+ip[1]); | |
2725 for (; ip < index_end; ip++) | |
2726 tty->print_cr(" (%d ?)", ip[0]); | |
2727 tty->print_cr(" @" INTPTR_FORMAT ": index_size=%d", ip, *ip++); | |
2728 tty->print_cr("reloc_end @" INTPTR_FORMAT ":", ip); | |
2729 } | |
2730 } | |
2731 } | |
2732 | |
2733 | |
2734 void nmethod::print_pcs() { | |
2735 ResourceMark m; // in case methods get printed via debugger | |
2736 tty->print_cr("pc-bytecode offsets:"); | |
2737 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
2738 p->print(this); | |
2739 } | |
2740 } | |
2741 | |
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2742 #endif // PRODUCT |
0 | 2743 |
2744 const char* nmethod::reloc_string_for(u_char* begin, u_char* end) { | |
2745 RelocIterator iter(this, begin, end); | |
2746 bool have_one = false; | |
2747 while (iter.next()) { | |
2748 have_one = true; | |
2749 switch (iter.type()) { | |
2750 case relocInfo::none: return "no_reloc"; | |
2751 case relocInfo::oop_type: { | |
2752 stringStream st; | |
2753 oop_Relocation* r = iter.oop_reloc(); | |
2754 oop obj = r->oop_value(); | |
2755 st.print("oop("); | |
2756 if (obj == NULL) st.print("NULL"); | |
2757 else obj->print_value_on(&st); | |
2758 st.print(")"); | |
2759 return st.as_string(); | |
2760 } | |
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2761 case relocInfo::metadata_type: { |
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2762 stringStream st; |
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2763 metadata_Relocation* r = iter.metadata_reloc(); |
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2764 Metadata* obj = r->metadata_value(); |
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2765 st.print("metadata("); |
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2766 if (obj == NULL) st.print("NULL"); |
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2767 else obj->print_value_on(&st); |
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2768 st.print(")"); |
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2769 return st.as_string(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2770 } |
0 | 2771 case relocInfo::virtual_call_type: return "virtual_call"; |
2772 case relocInfo::opt_virtual_call_type: return "optimized virtual_call"; | |
2773 case relocInfo::static_call_type: return "static_call"; | |
2774 case relocInfo::static_stub_type: return "static_stub"; | |
2775 case relocInfo::runtime_call_type: return "runtime_call"; | |
2776 case relocInfo::external_word_type: return "external_word"; | |
2777 case relocInfo::internal_word_type: return "internal_word"; | |
2778 case relocInfo::section_word_type: return "section_word"; | |
2779 case relocInfo::poll_type: return "poll"; | |
2780 case relocInfo::poll_return_type: return "poll_return"; | |
2781 case relocInfo::type_mask: return "type_bit_mask"; | |
2782 } | |
2783 } | |
2784 return have_one ? "other" : NULL; | |
2785 } | |
2786 | |
2787 // Return a the last scope in (begin..end] | |
2788 ScopeDesc* nmethod::scope_desc_in(address begin, address end) { | |
2789 PcDesc* p = pc_desc_near(begin+1); | |
2790 if (p != NULL && p->real_pc(this) <= end) { | |
2791 return new ScopeDesc(this, p->scope_decode_offset(), | |
9707 | 2792 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
|
2793 p->return_oop()); |
0 | 2794 } |
2795 return NULL; | |
2796 } | |
2797 | |
6796
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
parents:
6792
diff
changeset
|
2798 void nmethod::print_nmethod_labels(outputStream* stream, address block_begin) const { |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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1141
diff
changeset
|
2799 if (block_begin == entry_point()) stream->print_cr("[Entry Point]"); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
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1141
diff
changeset
|
2800 if (block_begin == verified_entry_point()) stream->print_cr("[Verified Entry Point]"); |
9707 | 2801 if (GRAAL_ONLY(_exception_offset >= 0 &&) block_begin == exception_begin()) stream->print_cr("[Exception Handler]"); |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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1141
diff
changeset
|
2802 if (block_begin == stub_begin()) stream->print_cr("[Stub Code]"); |
9707 | 2803 if (GRAAL_ONLY(_deoptimize_offset >= 0 &&) block_begin == deopt_handler_begin()) stream->print_cr("[Deopt Handler Code]"); |
1691
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
twisti
parents:
1644
diff
changeset
|
2804 |
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
twisti
parents:
1644
diff
changeset
|
2805 if (has_method_handle_invokes()) |
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
twisti
parents:
1644
diff
changeset
|
2806 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
|
2807 |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
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1141
diff
changeset
|
2808 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
|
2809 |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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1141
diff
changeset
|
2810 if (block_begin == entry_point()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2811 methodHandle m = method(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
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parents:
1141
diff
changeset
|
2812 if (m.not_null()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
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diff
changeset
|
2813 stream->print(" # "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2814 m->print_value_on(stream); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2815 stream->cr(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
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1141
diff
changeset
|
2816 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
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1141
diff
changeset
|
2817 if (m.not_null() && !is_osr_method()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2818 ResourceMark rm; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2819 int sizeargs = m->size_of_parameters(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2820 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
|
2821 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, sizeargs); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2822 { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2823 int sig_index = 0; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2824 if (!m->is_static()) |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2825 sig_bt[sig_index++] = T_OBJECT; // 'this' |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2826 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
|
2827 BasicType t = ss.type(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2828 sig_bt[sig_index++] = t; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2829 if (type2size[t] == 2) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2830 sig_bt[sig_index++] = T_VOID; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2831 } else { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2832 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
|
2833 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2834 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2835 assert(sig_index == sizeargs, ""); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2836 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2837 const char* spname = "sp"; // make arch-specific? |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2838 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
|
2839 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
|
2840 int tab1 = 14, tab2 = 24; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2841 int sig_index = 0; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2842 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
|
2843 bool did_old_sp = false; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2844 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
|
2845 bool at_this = (arg_index == -1); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2846 bool at_old_sp = false; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2847 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
|
2848 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
|
2849 if (at_this) |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2850 stream->print(" # this: "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2851 else |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2852 stream->print(" # parm%d: ", arg_index); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2853 stream->move_to(tab1); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2854 VMReg fst = regs[sig_index].first(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2855 VMReg snd = regs[sig_index].second(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2856 if (fst->is_reg()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2857 stream->print("%s", fst->name()); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2858 if (snd->is_valid()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2859 stream->print(":%s", snd->name()); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2860 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2861 } else if (fst->is_stack()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2862 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
|
2863 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
|
2864 stream->print("[%s+0x%x]", spname, offset); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2865 } else { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2866 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
|
2867 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2868 stream->print(" "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2869 stream->move_to(tab2); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2870 stream->print("= "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2871 if (at_this) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2872 m->method_holder()->print_value_on(stream); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2873 } else { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2874 bool did_name = false; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2875 if (!at_this && ss.is_object()) { |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2142
diff
changeset
|
2876 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
|
2877 if (name != NULL) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2878 name->print_value_on(stream); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2879 did_name = true; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2880 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2881 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2882 if (!did_name) |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2883 stream->print("%s", type2name(t)); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2884 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2885 if (at_old_sp) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2886 stream->print(" (%s of caller)", spname); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2887 did_old_sp = true; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2888 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2889 stream->cr(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2890 sig_index += type2size[t]; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2891 arg_index += 1; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2892 if (!at_this) ss.next(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2893 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2894 if (!did_old_sp) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2895 stream->print(" # "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2896 stream->move_to(tab1); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2897 stream->print("[%s+0x%x]", spname, stack_slot_offset); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2898 stream->print(" (%s of caller)", spname); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2899 stream->cr(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2900 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2901 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2902 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2903 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2904 |
0 | 2905 void nmethod::print_code_comment_on(outputStream* st, int column, u_char* begin, u_char* end) { |
2906 // First, find an oopmap in (begin, end]. | |
2907 // We use the odd half-closed interval so that oop maps and scope descs | |
2908 // which are tied to the byte after a call are printed with the call itself. | |
1748 | 2909 address base = code_begin(); |
0 | 2910 OopMapSet* oms = oop_maps(); |
2911 if (oms != NULL) { | |
2912 for (int i = 0, imax = oms->size(); i < imax; i++) { | |
2913 OopMap* om = oms->at(i); | |
2914 address pc = base + om->offset(); | |
2915 if (pc > begin) { | |
2916 if (pc <= end) { | |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2917 st->move_to(column); |
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2918 st->print("; "); |
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2919 om->print_on(st); |
0 | 2920 } |
2921 break; | |
2922 } | |
2923 } | |
2924 } | |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2925 |
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2926 // Print any debug info present at this pc. |
0 | 2927 ScopeDesc* sd = scope_desc_in(begin, end); |
2928 if (sd != NULL) { | |
100
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2929 st->move_to(column); |
0 | 2930 if (sd->bci() == SynchronizationEntryBCI) { |
2931 st->print(";*synchronization entry"); | |
2932 } else { | |
6725
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2933 if (sd->method() == NULL) { |
100
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2934 st->print("method is NULL"); |
0 | 2935 } else if (sd->method()->is_native()) { |
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2936 st->print("method is native"); |
0 | 2937 } else { |
2142 | 2938 Bytecodes::Code bc = sd->method()->java_code_at(sd->bci()); |
0 | 2939 st->print(";*%s", Bytecodes::name(bc)); |
2940 switch (bc) { | |
2941 case Bytecodes::_invokevirtual: | |
2942 case Bytecodes::_invokespecial: | |
2943 case Bytecodes::_invokestatic: | |
2944 case Bytecodes::_invokeinterface: | |
2945 { | |
2142 | 2946 Bytecode_invoke invoke(sd->method(), sd->bci()); |
0 | 2947 st->print(" "); |
2142 | 2948 if (invoke.name() != NULL) |
2949 invoke.name()->print_symbol_on(st); | |
0 | 2950 else |
2951 st->print("<UNKNOWN>"); | |
2952 break; | |
2953 } | |
2954 case Bytecodes::_getfield: | |
2955 case Bytecodes::_putfield: | |
2956 case Bytecodes::_getstatic: | |
2957 case Bytecodes::_putstatic: | |
2958 { | |
2142 | 2959 Bytecode_field field(sd->method(), sd->bci()); |
0 | 2960 st->print(" "); |
2142 | 2961 if (field.name() != NULL) |
2962 field.name()->print_symbol_on(st); | |
0 | 2963 else |
2964 st->print("<UNKNOWN>"); | |
2965 } | |
2966 } | |
2967 } | |
2968 } | |
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2969 |
0 | 2970 // Print all scopes |
2971 for (;sd != NULL; sd = sd->sender()) { | |
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2972 st->move_to(column); |
0 | 2973 st->print("; -"); |
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2974 if (sd->method() == NULL) { |
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2975 st->print("method is NULL"); |
0 | 2976 } else { |
2977 sd->method()->print_short_name(st); | |
2978 } | |
2979 int lineno = sd->method()->line_number_from_bci(sd->bci()); | |
2980 if (lineno != -1) { | |
2981 st->print("@%d (line %d)", sd->bci(), lineno); | |
2982 } else { | |
2983 st->print("@%d", sd->bci()); | |
2984 } | |
2985 st->cr(); | |
2986 } | |
2987 } | |
2988 | |
2989 // Print relocation information | |
2990 const char* str = reloc_string_for(begin, end); | |
2991 if (str != NULL) { | |
2992 if (sd != NULL) st->cr(); | |
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2993 st->move_to(column); |
0 | 2994 st->print("; {%s}", str); |
2995 } | |
1748 | 2996 int cont_offset = ImplicitExceptionTable(this).at(begin - code_begin()); |
0 | 2997 if (cont_offset != 0) { |
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2998 st->move_to(column); |
1748 | 2999 st->print("; implicit exception: dispatches to " INTPTR_FORMAT, code_begin() + cont_offset); |
0 | 3000 } |
3001 | |
3002 } | |
3003 | |
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3004 #ifndef PRODUCT |
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3005 |
0 | 3006 void nmethod::print_value_on(outputStream* st) const { |
2405
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3007 st->print("nmethod"); |
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3008 print_on(st, NULL); |
0 | 3009 } |
3010 | |
3011 void nmethod::print_calls(outputStream* st) { | |
3012 RelocIterator iter(this); | |
3013 while (iter.next()) { | |
3014 switch (iter.type()) { | |
3015 case relocInfo::virtual_call_type: | |
3016 case relocInfo::opt_virtual_call_type: { | |
3017 VerifyMutexLocker mc(CompiledIC_lock); | |
3018 CompiledIC_at(iter.reloc())->print(); | |
3019 break; | |
3020 } | |
3021 case relocInfo::static_call_type: | |
3022 st->print_cr("Static call at " INTPTR_FORMAT, iter.reloc()->addr()); | |
3023 compiledStaticCall_at(iter.reloc())->print(); | |
3024 break; | |
3025 } | |
3026 } | |
3027 } | |
3028 | |
3029 void nmethod::print_handler_table() { | |
3030 ExceptionHandlerTable(this).print(); | |
3031 } | |
3032 | |
3033 void nmethod::print_nul_chk_table() { | |
1748 | 3034 ImplicitExceptionTable(this).print(code_begin()); |
0 | 3035 } |
3036 | |
9707 | 3037 #endif // PRODUCT |
3038 | |
0 | 3039 void nmethod::print_statistics() { |
3040 ttyLocker ttyl; | |
3041 if (xtty != NULL) xtty->head("statistics type='nmethod'"); | |
3042 nmethod_stats.print_native_nmethod_stats(); | |
3043 nmethod_stats.print_nmethod_stats(); | |
3044 DebugInformationRecorder::print_statistics(); | |
3045 nmethod_stats.print_pc_stats(); | |
3046 Dependencies::print_statistics(); | |
3047 if (xtty != NULL) xtty->tail("statistics"); | |
3048 } |