Mercurial > hg > graal-compiler
annotate src/share/vm/code/nmethod.cpp @ 6948:e522a00b91aa
Merge with http://hg.openjdk.java.net/hsx/hsx25/hotspot/ after NPG - C++ build works
author | Doug Simon <doug.simon@oracle.com> |
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date | Mon, 12 Nov 2012 23:14:12 +0100 |
parents | 957c266d8bc5 18fb7da42534 |
children | 2cb439954abf |
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 | |
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48 #ifdef GRAAL |
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49 #include "graal/graalJavaAccess.hpp" |
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50 #endif |
0 | 51 |
52 #ifdef DTRACE_ENABLED | |
53 | |
54 // Only bother with this argument setup if dtrace is available | |
55 | |
4006 | 56 #ifndef USDT2 |
0 | 57 HS_DTRACE_PROBE_DECL8(hotspot, compiled__method__load, |
58 const char*, int, const char*, int, const char*, int, void*, size_t); | |
59 | |
60 HS_DTRACE_PROBE_DECL6(hotspot, compiled__method__unload, | |
61 char*, int, char*, int, char*, int); | |
62 | |
63 #define DTRACE_METHOD_UNLOAD_PROBE(method) \ | |
64 { \ | |
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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 } | |
103 bool nmethod::is_compiled_by_c2() const { | |
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104 if (compiler() == NULL || method() == NULL) return false; // can happen during debug printing |
0 | 105 if (is_native_method()) return false; |
106 return compiler()->is_c2(); | |
107 } | |
1692 | 108 bool nmethod::is_compiled_by_shark() const { |
109 if (is_native_method()) return false; | |
110 assert(compiler() != NULL, "must be"); | |
111 return compiler()->is_shark(); | |
112 } | |
0 | 113 |
114 | |
115 | |
116 //--------------------------------------------------------------------------------- | |
117 // NMethod statistics | |
118 // They are printed under various flags, including: | |
119 // PrintC1Statistics, PrintOptoStatistics, LogVMOutput, and LogCompilation. | |
120 // (In the latter two cases, they like other stats are printed to the log only.) | |
121 | |
122 // These variables are put into one block to reduce relocations | |
123 // and make it simpler to print from the debugger. | |
124 static | |
125 struct nmethod_stats_struct { | |
126 int nmethod_count; | |
127 int total_size; | |
128 int relocation_size; | |
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129 int consts_size; |
1748 | 130 int insts_size; |
0 | 131 int stub_size; |
132 int scopes_data_size; | |
133 int scopes_pcs_size; | |
134 int dependencies_size; | |
135 int handler_table_size; | |
136 int nul_chk_table_size; | |
137 int oops_size; | |
138 | |
139 void note_nmethod(nmethod* nm) { | |
140 nmethod_count += 1; | |
141 total_size += nm->size(); | |
142 relocation_size += nm->relocation_size(); | |
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143 consts_size += nm->consts_size(); |
1748 | 144 insts_size += nm->insts_size(); |
0 | 145 stub_size += nm->stub_size(); |
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146 oops_size += nm->oops_size(); |
0 | 147 scopes_data_size += nm->scopes_data_size(); |
148 scopes_pcs_size += nm->scopes_pcs_size(); | |
149 dependencies_size += nm->dependencies_size(); | |
150 handler_table_size += nm->handler_table_size(); | |
151 nul_chk_table_size += nm->nul_chk_table_size(); | |
152 } | |
153 void print_nmethod_stats() { | |
154 if (nmethod_count == 0) return; | |
155 tty->print_cr("Statistics for %d bytecoded nmethods:", nmethod_count); | |
156 if (total_size != 0) tty->print_cr(" total in heap = %d", total_size); | |
157 if (relocation_size != 0) tty->print_cr(" relocation = %d", relocation_size); | |
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158 if (consts_size != 0) tty->print_cr(" constants = %d", consts_size); |
1748 | 159 if (insts_size != 0) tty->print_cr(" main code = %d", insts_size); |
0 | 160 if (stub_size != 0) tty->print_cr(" stub code = %d", stub_size); |
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161 if (oops_size != 0) tty->print_cr(" oops = %d", oops_size); |
0 | 162 if (scopes_data_size != 0) tty->print_cr(" scopes data = %d", scopes_data_size); |
163 if (scopes_pcs_size != 0) tty->print_cr(" scopes pcs = %d", scopes_pcs_size); | |
164 if (dependencies_size != 0) tty->print_cr(" dependencies = %d", dependencies_size); | |
165 if (handler_table_size != 0) tty->print_cr(" handler table = %d", handler_table_size); | |
166 if (nul_chk_table_size != 0) tty->print_cr(" nul chk table = %d", nul_chk_table_size); | |
167 } | |
168 | |
169 int native_nmethod_count; | |
170 int native_total_size; | |
171 int native_relocation_size; | |
1748 | 172 int native_insts_size; |
0 | 173 int native_oops_size; |
174 void note_native_nmethod(nmethod* nm) { | |
175 native_nmethod_count += 1; | |
176 native_total_size += nm->size(); | |
177 native_relocation_size += nm->relocation_size(); | |
1748 | 178 native_insts_size += nm->insts_size(); |
0 | 179 native_oops_size += nm->oops_size(); |
180 } | |
181 void print_native_nmethod_stats() { | |
182 if (native_nmethod_count == 0) return; | |
183 tty->print_cr("Statistics for %d native nmethods:", native_nmethod_count); | |
184 if (native_total_size != 0) tty->print_cr(" N. total size = %d", native_total_size); | |
185 if (native_relocation_size != 0) tty->print_cr(" N. relocation = %d", native_relocation_size); | |
1748 | 186 if (native_insts_size != 0) tty->print_cr(" N. main code = %d", native_insts_size); |
0 | 187 if (native_oops_size != 0) tty->print_cr(" N. oops = %d", native_oops_size); |
188 } | |
189 | |
190 int pc_desc_resets; // number of resets (= number of caches) | |
191 int pc_desc_queries; // queries to nmethod::find_pc_desc | |
192 int pc_desc_approx; // number of those which have approximate true | |
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193 int pc_desc_repeats; // number of _pc_descs[0] hits |
0 | 194 int pc_desc_hits; // number of LRU cache hits |
195 int pc_desc_tests; // total number of PcDesc examinations | |
196 int pc_desc_searches; // total number of quasi-binary search steps | |
197 int pc_desc_adds; // number of LUR cache insertions | |
198 | |
199 void print_pc_stats() { | |
200 tty->print_cr("PcDesc Statistics: %d queries, %.2f comparisons per query", | |
201 pc_desc_queries, | |
202 (double)(pc_desc_tests + pc_desc_searches) | |
203 / pc_desc_queries); | |
204 tty->print_cr(" caches=%d queries=%d/%d, hits=%d+%d, tests=%d+%d, adds=%d", | |
205 pc_desc_resets, | |
206 pc_desc_queries, pc_desc_approx, | |
207 pc_desc_repeats, pc_desc_hits, | |
208 pc_desc_tests, pc_desc_searches, pc_desc_adds); | |
209 } | |
210 } nmethod_stats; | |
211 | |
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212 |
0 | 213 //--------------------------------------------------------------------------------- |
214 | |
215 | |
216 ExceptionCache::ExceptionCache(Handle exception, address pc, address handler) { | |
217 assert(pc != NULL, "Must be non null"); | |
218 assert(exception.not_null(), "Must be non null"); | |
219 assert(handler != NULL, "Must be non null"); | |
220 | |
221 _count = 0; | |
222 _exception_type = exception->klass(); | |
223 _next = NULL; | |
224 | |
225 add_address_and_handler(pc,handler); | |
226 } | |
227 | |
228 | |
229 address ExceptionCache::match(Handle exception, address pc) { | |
230 assert(pc != NULL,"Must be non null"); | |
231 assert(exception.not_null(),"Must be non null"); | |
232 if (exception->klass() == exception_type()) { | |
233 return (test_address(pc)); | |
234 } | |
235 | |
236 return NULL; | |
237 } | |
238 | |
239 | |
240 bool ExceptionCache::match_exception_with_space(Handle exception) { | |
241 assert(exception.not_null(),"Must be non null"); | |
242 if (exception->klass() == exception_type() && count() < cache_size) { | |
243 return true; | |
244 } | |
245 return false; | |
246 } | |
247 | |
248 | |
249 address ExceptionCache::test_address(address addr) { | |
250 for (int i=0; i<count(); i++) { | |
251 if (pc_at(i) == addr) { | |
252 return handler_at(i); | |
253 } | |
254 } | |
255 return NULL; | |
256 } | |
257 | |
258 | |
259 bool ExceptionCache::add_address_and_handler(address addr, address handler) { | |
260 if (test_address(addr) == handler) return true; | |
261 if (count() < cache_size) { | |
262 set_pc_at(count(),addr); | |
263 set_handler_at(count(), handler); | |
264 increment_count(); | |
265 return true; | |
266 } | |
267 return false; | |
268 } | |
269 | |
270 | |
271 // private method for handling exception cache | |
272 // These methods are private, and used to manipulate the exception cache | |
273 // directly. | |
274 ExceptionCache* nmethod::exception_cache_entry_for_exception(Handle exception) { | |
275 ExceptionCache* ec = exception_cache(); | |
276 while (ec != NULL) { | |
277 if (ec->match_exception_with_space(exception)) { | |
278 return ec; | |
279 } | |
280 ec = ec->next(); | |
281 } | |
282 return NULL; | |
283 } | |
284 | |
285 | |
286 //----------------------------------------------------------------------------- | |
287 | |
288 | |
289 // Helper used by both find_pc_desc methods. | |
290 static inline bool match_desc(PcDesc* pc, int pc_offset, bool approximate) { | |
291 NOT_PRODUCT(++nmethod_stats.pc_desc_tests); | |
292 if (!approximate) | |
293 return pc->pc_offset() == pc_offset; | |
294 else | |
295 return (pc-1)->pc_offset() < pc_offset && pc_offset <= pc->pc_offset(); | |
296 } | |
297 | |
298 void PcDescCache::reset_to(PcDesc* initial_pc_desc) { | |
299 if (initial_pc_desc == NULL) { | |
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300 _pc_descs[0] = NULL; // native method; no PcDescs at all |
0 | 301 return; |
302 } | |
303 NOT_PRODUCT(++nmethod_stats.pc_desc_resets); | |
304 // reset the cache by filling it with benign (non-null) values | |
305 assert(initial_pc_desc->pc_offset() < 0, "must be sentinel"); | |
306 for (int i = 0; i < cache_size; i++) | |
307 _pc_descs[i] = initial_pc_desc; | |
308 } | |
309 | |
310 PcDesc* PcDescCache::find_pc_desc(int pc_offset, bool approximate) { | |
311 NOT_PRODUCT(++nmethod_stats.pc_desc_queries); | |
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312 NOT_PRODUCT(if (approximate) ++nmethod_stats.pc_desc_approx); |
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313 |
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314 // Note: one might think that caching the most recently |
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315 // read value separately would be a win, but one would be |
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316 // wrong. When many threads are updating it, the cache |
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317 // line it's in would bounce between caches, negating |
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318 // any benefit. |
0 | 319 |
320 // In order to prevent race conditions do not load cache elements | |
321 // repeatedly, but use a local copy: | |
322 PcDesc* res; | |
323 | |
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324 // Step one: Check the most recently added value. |
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325 res = _pc_descs[0]; |
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326 if (res == NULL) return NULL; // native method; no PcDescs at all |
0 | 327 if (match_desc(res, pc_offset, approximate)) { |
328 NOT_PRODUCT(++nmethod_stats.pc_desc_repeats); | |
329 return res; | |
330 } | |
331 | |
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332 // Step two: Check the rest of the LRU cache. |
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333 for (int i = 1; i < cache_size; ++i) { |
0 | 334 res = _pc_descs[i]; |
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335 if (res->pc_offset() < 0) break; // optimization: skip empty cache |
0 | 336 if (match_desc(res, pc_offset, approximate)) { |
337 NOT_PRODUCT(++nmethod_stats.pc_desc_hits); | |
338 return res; | |
339 } | |
340 } | |
341 | |
342 // Report failure. | |
343 return NULL; | |
344 } | |
345 | |
346 void PcDescCache::add_pc_desc(PcDesc* pc_desc) { | |
347 NOT_PRODUCT(++nmethod_stats.pc_desc_adds); | |
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348 // Update the LRU cache by shifting pc_desc forward. |
0 | 349 for (int i = 0; i < cache_size; i++) { |
350 PcDesc* next = _pc_descs[i]; | |
351 _pc_descs[i] = pc_desc; | |
352 pc_desc = next; | |
353 } | |
354 } | |
355 | |
356 // adjust pcs_size so that it is a multiple of both oopSize and | |
357 // sizeof(PcDesc) (assumes that if sizeof(PcDesc) is not a multiple | |
358 // of oopSize, then 2*sizeof(PcDesc) is) | |
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359 static int adjust_pcs_size(int pcs_size) { |
0 | 360 int nsize = round_to(pcs_size, oopSize); |
361 if ((nsize % sizeof(PcDesc)) != 0) { | |
362 nsize = pcs_size + sizeof(PcDesc); | |
363 } | |
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364 assert((nsize % oopSize) == 0, "correct alignment"); |
0 | 365 return nsize; |
366 } | |
367 | |
368 //----------------------------------------------------------------------------- | |
369 | |
370 | |
371 void nmethod::add_exception_cache_entry(ExceptionCache* new_entry) { | |
372 assert(ExceptionCache_lock->owned_by_self(),"Must hold the ExceptionCache_lock"); | |
373 assert(new_entry != NULL,"Must be non null"); | |
374 assert(new_entry->next() == NULL, "Must be null"); | |
375 | |
376 if (exception_cache() != NULL) { | |
377 new_entry->set_next(exception_cache()); | |
378 } | |
379 set_exception_cache(new_entry); | |
380 } | |
381 | |
382 void nmethod::remove_from_exception_cache(ExceptionCache* ec) { | |
383 ExceptionCache* prev = NULL; | |
384 ExceptionCache* curr = exception_cache(); | |
385 assert(curr != NULL, "nothing to remove"); | |
386 // find the previous and next entry of ec | |
387 while (curr != ec) { | |
388 prev = curr; | |
389 curr = curr->next(); | |
390 assert(curr != NULL, "ExceptionCache not found"); | |
391 } | |
392 // now: curr == ec | |
393 ExceptionCache* next = curr->next(); | |
394 if (prev == NULL) { | |
395 set_exception_cache(next); | |
396 } else { | |
397 prev->set_next(next); | |
398 } | |
399 delete curr; | |
400 } | |
401 | |
402 | |
403 // public method for accessing the exception cache | |
404 // These are the public access methods. | |
405 address nmethod::handler_for_exception_and_pc(Handle exception, address pc) { | |
406 // We never grab a lock to read the exception cache, so we may | |
407 // have false negatives. This is okay, as it can only happen during | |
408 // the first few exception lookups for a given nmethod. | |
409 ExceptionCache* ec = exception_cache(); | |
410 while (ec != NULL) { | |
411 address ret_val; | |
412 if ((ret_val = ec->match(exception,pc)) != NULL) { | |
413 return ret_val; | |
414 } | |
415 ec = ec->next(); | |
416 } | |
417 return NULL; | |
418 } | |
419 | |
420 | |
421 void nmethod::add_handler_for_exception_and_pc(Handle exception, address pc, address handler) { | |
422 // There are potential race conditions during exception cache updates, so we | |
423 // must own the ExceptionCache_lock before doing ANY modifications. Because | |
605 | 424 // we don't lock during reads, it is possible to have several threads attempt |
0 | 425 // to update the cache with the same data. We need to check for already inserted |
426 // copies of the current data before adding it. | |
427 | |
428 MutexLocker ml(ExceptionCache_lock); | |
429 ExceptionCache* target_entry = exception_cache_entry_for_exception(exception); | |
430 | |
431 if (target_entry == NULL || !target_entry->add_address_and_handler(pc,handler)) { | |
432 target_entry = new ExceptionCache(exception,pc,handler); | |
433 add_exception_cache_entry(target_entry); | |
434 } | |
435 } | |
436 | |
437 | |
438 //-------------end of code for ExceptionCache-------------- | |
439 | |
440 | |
441 int nmethod::total_size() const { | |
442 return | |
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443 consts_size() + |
1748 | 444 insts_size() + |
0 | 445 stub_size() + |
446 scopes_data_size() + | |
447 scopes_pcs_size() + | |
448 handler_table_size() + | |
449 nul_chk_table_size(); | |
450 } | |
451 | |
452 const char* nmethod::compile_kind() const { | |
453 if (is_osr_method()) return "osr"; | |
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454 if (method() != NULL && is_native_method()) return "c2n"; |
0 | 455 return NULL; |
456 } | |
457 | |
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458 // Fill in default values for various flag fields |
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459 void nmethod::init_defaults() { |
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460 _state = alive; |
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461 _marked_for_reclamation = 0; |
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462 _has_flushed_dependencies = 0; |
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463 _speculatively_disconnected = 0; |
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464 _has_unsafe_access = 0; |
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465 _has_method_handle_invokes = 0; |
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466 _lazy_critical_native = 0; |
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467 _has_wide_vectors = 0; |
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468 _marked_for_deoptimization = 0; |
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469 _lock_count = 0; |
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470 _stack_traversal_mark = 0; |
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471 _unload_reported = false; // jvmti state |
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472 |
1726 | 473 #ifdef ASSERT |
474 _oops_are_stale = false; | |
475 #endif | |
476 | |
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477 _oops_do_mark_link = NULL; |
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478 _jmethod_id = NULL; |
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479 _osr_link = NULL; |
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480 _scavenge_root_link = NULL; |
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481 _scavenge_root_state = 0; |
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482 _saved_nmethod_link = NULL; |
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483 _compiler = NULL; |
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484 #ifdef GRAAL |
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485 _graal_installed_code = (oop) Universe::non_oop_word(); |
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486 #endif |
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487 #ifdef HAVE_DTRACE_H |
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488 _trap_offset = 0; |
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489 #endif // def HAVE_DTRACE_H |
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490 } |
0 | 491 |
492 | |
493 nmethod* nmethod::new_native_nmethod(methodHandle method, | |
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494 int compile_id, |
0 | 495 CodeBuffer *code_buffer, |
496 int vep_offset, | |
497 int frame_complete, | |
498 int frame_size, | |
499 ByteSize basic_lock_owner_sp_offset, | |
500 ByteSize basic_lock_sp_offset, | |
501 OopMapSet* oop_maps) { | |
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502 code_buffer->finalize_oop_references(method); |
0 | 503 // create nmethod |
504 nmethod* nm = NULL; | |
505 { | |
506 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
507 int native_nmethod_size = allocation_size(code_buffer, sizeof(nmethod)); | |
508 CodeOffsets offsets; | |
509 offsets.set_value(CodeOffsets::Verified_Entry, vep_offset); | |
510 offsets.set_value(CodeOffsets::Frame_Complete, frame_complete); | |
511 nm = new (native_nmethod_size) | |
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512 nmethod(method(), native_nmethod_size, compile_id, &offsets, |
0 | 513 code_buffer, frame_size, |
514 basic_lock_owner_sp_offset, basic_lock_sp_offset, | |
515 oop_maps); | |
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516 if (nm != NULL) nmethod_stats.note_native_nmethod(nm); |
0 | 517 if (PrintAssembly && nm != NULL) |
518 Disassembler::decode(nm); | |
519 } | |
520 // verify nmethod | |
521 debug_only(if (nm) nm->verify();) // might block | |
522 | |
523 if (nm != NULL) { | |
524 nm->log_new_nmethod(); | |
525 } | |
526 | |
527 return nm; | |
528 } | |
529 | |
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530 #ifdef HAVE_DTRACE_H |
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531 nmethod* nmethod::new_dtrace_nmethod(methodHandle method, |
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532 CodeBuffer *code_buffer, |
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533 int vep_offset, |
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534 int trap_offset, |
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535 int frame_complete, |
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536 int frame_size) { |
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537 code_buffer->finalize_oop_references(method); |
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538 // create nmethod |
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539 nmethod* nm = NULL; |
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540 { |
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541 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
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542 int nmethod_size = allocation_size(code_buffer, sizeof(nmethod)); |
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543 CodeOffsets offsets; |
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544 offsets.set_value(CodeOffsets::Verified_Entry, vep_offset); |
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545 offsets.set_value(CodeOffsets::Dtrace_trap, trap_offset); |
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546 offsets.set_value(CodeOffsets::Frame_Complete, frame_complete); |
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547 |
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548 nm = new (nmethod_size) nmethod(method(), nmethod_size, &offsets, code_buffer, frame_size); |
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549 |
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550 if (nm != NULL) nmethod_stats.note_nmethod(nm); |
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551 if (PrintAssembly && nm != NULL) |
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552 Disassembler::decode(nm); |
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553 } |
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554 // verify nmethod |
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555 debug_only(if (nm) nm->verify();) // might block |
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556 |
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557 if (nm != NULL) { |
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558 nm->log_new_nmethod(); |
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559 } |
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560 |
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561 return nm; |
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562 } |
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563 |
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564 #endif // def HAVE_DTRACE_H |
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565 |
0 | 566 nmethod* nmethod::new_nmethod(methodHandle method, |
567 int compile_id, | |
568 int entry_bci, | |
569 CodeOffsets* offsets, | |
570 int orig_pc_offset, | |
571 DebugInformationRecorder* debug_info, | |
572 Dependencies* dependencies, | |
573 CodeBuffer* code_buffer, int frame_size, | |
574 OopMapSet* oop_maps, | |
575 ExceptionHandlerTable* handler_table, | |
576 ImplicitExceptionTable* nul_chk_table, | |
577 AbstractCompiler* compiler, | |
578 int comp_level | |
579 ) | |
580 { | |
581 assert(debug_info->oop_recorder() == code_buffer->oop_recorder(), "shared OR"); | |
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582 code_buffer->finalize_oop_references(method); |
0 | 583 // create nmethod |
584 nmethod* nm = NULL; | |
585 { MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
586 int nmethod_size = | |
587 allocation_size(code_buffer, sizeof(nmethod)) | |
588 + adjust_pcs_size(debug_info->pcs_size()) | |
589 + round_to(dependencies->size_in_bytes() , oopSize) | |
590 + round_to(handler_table->size_in_bytes(), oopSize) | |
591 + round_to(nul_chk_table->size_in_bytes(), oopSize) | |
592 + round_to(debug_info->data_size() , oopSize); | |
593 nm = new (nmethod_size) | |
594 nmethod(method(), nmethod_size, compile_id, entry_bci, offsets, | |
595 orig_pc_offset, debug_info, dependencies, code_buffer, frame_size, | |
596 oop_maps, | |
597 handler_table, | |
598 nul_chk_table, | |
599 compiler, | |
600 comp_level); | |
601 if (nm != NULL) { | |
602 // To make dependency checking during class loading fast, record | |
603 // the nmethod dependencies in the classes it is dependent on. | |
604 // This allows the dependency checking code to simply walk the | |
605 // class hierarchy above the loaded class, checking only nmethods | |
606 // which are dependent on those classes. The slow way is to | |
607 // check every nmethod for dependencies which makes it linear in | |
608 // the number of methods compiled. For applications with a lot | |
609 // classes the slow way is too slow. | |
610 for (Dependencies::DepStream deps(nm); deps.next(); ) { | |
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611 Klass* klass = deps.context_type(); |
0 | 612 if (klass == NULL) continue; // ignore things like evol_method |
613 | |
614 // record this nmethod as dependent on this klass | |
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615 InstanceKlass::cast(klass)->add_dependent_nmethod(nm); |
0 | 616 } |
617 } | |
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618 if (nm != NULL) nmethod_stats.note_nmethod(nm); |
0 | 619 if (PrintAssembly && nm != NULL) |
620 Disassembler::decode(nm); | |
621 } | |
622 | |
623 // verify nmethod | |
624 debug_only(if (nm) nm->verify();) // might block | |
625 | |
626 if (nm != NULL) { | |
627 nm->log_new_nmethod(); | |
628 } | |
629 | |
630 // done | |
631 return nm; | |
632 } | |
633 | |
634 | |
635 // For native wrappers | |
636 nmethod::nmethod( | |
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637 Method* method, |
0 | 638 int nmethod_size, |
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639 int compile_id, |
0 | 640 CodeOffsets* offsets, |
641 CodeBuffer* code_buffer, | |
642 int frame_size, | |
643 ByteSize basic_lock_owner_sp_offset, | |
644 ByteSize basic_lock_sp_offset, | |
645 OopMapSet* oop_maps ) | |
646 : CodeBlob("native nmethod", code_buffer, sizeof(nmethod), | |
647 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, oop_maps), | |
2019 | 648 _native_receiver_sp_offset(basic_lock_owner_sp_offset), |
649 _native_basic_lock_sp_offset(basic_lock_sp_offset) | |
0 | 650 { |
651 { | |
652 debug_only(No_Safepoint_Verifier nsv;) | |
653 assert_locked_or_safepoint(CodeCache_lock); | |
654 | |
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655 init_defaults(); |
0 | 656 _method = method; |
657 _entry_bci = InvocationEntryBci; | |
658 // We have no exception handler or deopt handler make the | |
659 // values something that will never match a pc like the nmethod vtable entry | |
660 _exception_offset = 0; | |
661 _deoptimize_offset = 0; | |
1204 | 662 _deoptimize_mh_offset = 0; |
0 | 663 _orig_pc_offset = 0; |
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664 |
1748 | 665 _consts_offset = data_offset(); |
0 | 666 _stub_offset = data_offset(); |
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667 _oops_offset = data_offset(); |
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668 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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669 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
0 | 670 _scopes_pcs_offset = _scopes_data_offset; |
671 _dependencies_offset = _scopes_pcs_offset; | |
672 _handler_table_offset = _dependencies_offset; | |
673 _nul_chk_table_offset = _handler_table_offset; | |
674 _nmethod_end_offset = _nul_chk_table_offset; | |
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675 _compile_id = compile_id; |
0 | 676 _comp_level = CompLevel_none; |
1748 | 677 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
678 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
0 | 679 _osr_entry_point = NULL; |
680 _exception_cache = NULL; | |
681 _pc_desc_cache.reset_to(NULL); | |
682 | |
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683 code_buffer->copy_values_to(this); |
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684 if (ScavengeRootsInCode && detect_scavenge_root_oops()) { |
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685 CodeCache::add_scavenge_root_nmethod(this); |
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686 } |
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687 debug_only(verify_scavenge_root_oops()); |
0 | 688 CodeCache::commit(this); |
689 } | |
690 | |
691 if (PrintNativeNMethods || PrintDebugInfo || PrintRelocations || PrintDependencies) { | |
692 ttyLocker ttyl; // keep the following output all in one block | |
693 // This output goes directly to the tty, not the compiler log. | |
694 // To enable tools to match it up with the compilation activity, | |
695 // be sure to tag this tty output with the compile ID. | |
696 if (xtty != NULL) { | |
697 xtty->begin_head("print_native_nmethod"); | |
698 xtty->method(_method); | |
699 xtty->stamp(); | |
700 xtty->end_head(" address='" INTPTR_FORMAT "'", (intptr_t) this); | |
701 } | |
702 // print the header part first | |
703 print(); | |
704 // then print the requested information | |
705 if (PrintNativeNMethods) { | |
706 print_code(); | |
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707 if (oop_maps != NULL) { |
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708 oop_maps->print(); |
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709 } |
0 | 710 } |
711 if (PrintRelocations) { | |
712 print_relocations(); | |
713 } | |
714 if (xtty != NULL) { | |
715 xtty->tail("print_native_nmethod"); | |
716 } | |
717 } | |
718 } | |
719 | |
116
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720 // For dtrace wrappers |
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721 #ifdef HAVE_DTRACE_H |
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722 nmethod::nmethod( |
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723 Method* method, |
116
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724 int nmethod_size, |
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725 CodeOffsets* offsets, |
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726 CodeBuffer* code_buffer, |
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727 int frame_size) |
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728 : CodeBlob("dtrace nmethod", code_buffer, sizeof(nmethod), |
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729 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, NULL), |
2019 | 730 _native_receiver_sp_offset(in_ByteSize(-1)), |
731 _native_basic_lock_sp_offset(in_ByteSize(-1)) | |
116
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732 { |
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733 { |
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734 debug_only(No_Safepoint_Verifier nsv;) |
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735 assert_locked_or_safepoint(CodeCache_lock); |
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736 |
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737 init_defaults(); |
116
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738 _method = method; |
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739 _entry_bci = InvocationEntryBci; |
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740 // We have no exception handler or deopt handler make the |
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741 // values something that will never match a pc like the nmethod vtable entry |
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742 _exception_offset = 0; |
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743 _deoptimize_offset = 0; |
1204 | 744 _deoptimize_mh_offset = 0; |
1378
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745 _unwind_handler_offset = -1; |
116
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746 _trap_offset = offsets->value(CodeOffsets::Dtrace_trap); |
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747 _orig_pc_offset = 0; |
1748 | 748 _consts_offset = data_offset(); |
116
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749 _stub_offset = data_offset(); |
1563
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750 _oops_offset = data_offset(); |
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751 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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752 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
116
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753 _scopes_pcs_offset = _scopes_data_offset; |
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754 _dependencies_offset = _scopes_pcs_offset; |
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755 _handler_table_offset = _dependencies_offset; |
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756 _nul_chk_table_offset = _handler_table_offset; |
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757 _nmethod_end_offset = _nul_chk_table_offset; |
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758 _compile_id = 0; // default |
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759 _comp_level = CompLevel_none; |
1748 | 760 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
761 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
116
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762 _osr_entry_point = NULL; |
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763 _exception_cache = NULL; |
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764 _pc_desc_cache.reset_to(NULL); |
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765 |
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766 code_buffer->copy_values_to(this); |
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767 debug_only(verify_scavenge_root_oops()); |
116
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768 CodeCache::commit(this); |
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769 } |
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770 |
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771 if (PrintNMethods || PrintDebugInfo || PrintRelocations || PrintDependencies) { |
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772 ttyLocker ttyl; // keep the following output all in one block |
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773 // This output goes directly to the tty, not the compiler log. |
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774 // To enable tools to match it up with the compilation activity, |
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775 // be sure to tag this tty output with the compile ID. |
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776 if (xtty != NULL) { |
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777 xtty->begin_head("print_dtrace_nmethod"); |
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778 xtty->method(_method); |
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779 xtty->stamp(); |
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780 xtty->end_head(" address='" INTPTR_FORMAT "'", (intptr_t) this); |
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781 } |
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782 // print the header part first |
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783 print(); |
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784 // then print the requested information |
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785 if (PrintNMethods) { |
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786 print_code(); |
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787 } |
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788 if (PrintRelocations) { |
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789 print_relocations(); |
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790 } |
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791 if (xtty != NULL) { |
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792 xtty->tail("print_dtrace_nmethod"); |
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793 } |
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794 } |
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795 } |
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796 #endif // def HAVE_DTRACE_H |
0 | 797 |
798 void* nmethod::operator new(size_t size, int nmethod_size) { | |
799 // Always leave some room in the CodeCache for I2C/C2I adapters | |
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800 if (CodeCache::largest_free_block() < CodeCacheMinimumFreeSpace) return NULL; |
0 | 801 return CodeCache::allocate(nmethod_size); |
802 } | |
803 | |
804 | |
805 nmethod::nmethod( | |
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806 Method* method, |
0 | 807 int nmethod_size, |
808 int compile_id, | |
809 int entry_bci, | |
810 CodeOffsets* offsets, | |
811 int orig_pc_offset, | |
812 DebugInformationRecorder* debug_info, | |
813 Dependencies* dependencies, | |
814 CodeBuffer *code_buffer, | |
815 int frame_size, | |
816 OopMapSet* oop_maps, | |
817 ExceptionHandlerTable* handler_table, | |
818 ImplicitExceptionTable* nul_chk_table, | |
819 AbstractCompiler* compiler, | |
820 int comp_level | |
821 ) | |
822 : CodeBlob("nmethod", code_buffer, sizeof(nmethod), | |
823 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, oop_maps), | |
2019 | 824 _native_receiver_sp_offset(in_ByteSize(-1)), |
825 _native_basic_lock_sp_offset(in_ByteSize(-1)) | |
0 | 826 { |
827 assert(debug_info->oop_recorder() == code_buffer->oop_recorder(), "shared OR"); | |
828 { | |
829 debug_only(No_Safepoint_Verifier nsv;) | |
830 assert_locked_or_safepoint(CodeCache_lock); | |
831 | |
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832 init_defaults(); |
0 | 833 _method = method; |
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834 _entry_bci = entry_bci; |
0 | 835 _compile_id = compile_id; |
836 _comp_level = comp_level; | |
837 _compiler = compiler; | |
838 _orig_pc_offset = orig_pc_offset; | |
1748 | 839 |
840 // Section offsets | |
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841 _consts_offset = content_offset() + code_buffer->total_offset_of(code_buffer->consts()); |
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842 _stub_offset = content_offset() + code_buffer->total_offset_of(code_buffer->stubs()); |
0 | 843 |
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844 #ifdef GRAAL |
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845 // graal produces no (!) stub section |
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846 if (offsets->value(CodeOffsets::Exceptions) != -1) { |
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847 _exception_offset = code_offset() + offsets->value(CodeOffsets::Exceptions); |
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848 } else { |
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849 _exception_offset = -1; |
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850 } |
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851 if (offsets->value(CodeOffsets::Deopt) != -1) { |
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852 _deoptimize_offset = code_offset() + offsets->value(CodeOffsets::Deopt); |
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853 } else { |
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854 _deoptimize_offset = -1; |
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855 } |
2106 | 856 if (offsets->value(CodeOffsets::DeoptMH) != -1) { |
1935
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857 _deoptimize_mh_offset = code_offset() + offsets->value(CodeOffsets::DeoptMH); |
1930 | 858 } else { |
859 _deoptimize_mh_offset = -1; | |
860 } | |
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861 #else |
0 | 862 // Exception handler and deopt handler are in the stub section |
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863 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must be set"); |
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864 assert(offsets->value(CodeOffsets::Deopt ) != -1, "must be set"); |
5251
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865 |
1930 | 866 _exception_offset = _stub_offset + offsets->value(CodeOffsets::Exceptions); |
867 _deoptimize_offset = _stub_offset + offsets->value(CodeOffsets::Deopt); | |
2106 | 868 if (offsets->value(CodeOffsets::DeoptMH) != -1) { |
1930 | 869 _deoptimize_mh_offset = _stub_offset + offsets->value(CodeOffsets::DeoptMH); |
870 } else { | |
871 _deoptimize_mh_offset = -1; | |
872 } | |
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873 #endif |
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874 if (offsets->value(CodeOffsets::UnwindHandler) != -1) { |
1748 | 875 _unwind_handler_offset = code_offset() + offsets->value(CodeOffsets::UnwindHandler); |
1378
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876 } else { |
1748 | 877 _unwind_handler_offset = -1; |
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878 } |
1748 | 879 |
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880 _oops_offset = data_offset(); |
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881 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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882 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
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883 |
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884 _scopes_pcs_offset = _scopes_data_offset + round_to(debug_info->data_size (), oopSize); |
0 | 885 _dependencies_offset = _scopes_pcs_offset + adjust_pcs_size(debug_info->pcs_size()); |
886 _handler_table_offset = _dependencies_offset + round_to(dependencies->size_in_bytes (), oopSize); | |
887 _nul_chk_table_offset = _handler_table_offset + round_to(handler_table->size_in_bytes(), oopSize); | |
888 _nmethod_end_offset = _nul_chk_table_offset + round_to(nul_chk_table->size_in_bytes(), oopSize); | |
889 | |
1748 | 890 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
891 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
892 _osr_entry_point = code_begin() + offsets->value(CodeOffsets::OSR_Entry); | |
0 | 893 _exception_cache = NULL; |
894 _pc_desc_cache.reset_to(scopes_pcs_begin()); | |
895 | |
896 // Copy contents of ScopeDescRecorder to nmethod | |
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897 code_buffer->copy_values_to(this); |
0 | 898 debug_info->copy_to(this); |
899 dependencies->copy_to(this); | |
989
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900 if (ScavengeRootsInCode && detect_scavenge_root_oops()) { |
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901 CodeCache::add_scavenge_root_nmethod(this); |
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902 } |
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903 debug_only(verify_scavenge_root_oops()); |
0 | 904 |
905 CodeCache::commit(this); | |
906 | |
907 // Copy contents of ExceptionHandlerTable to nmethod | |
908 handler_table->copy_to(this); | |
909 nul_chk_table->copy_to(this); | |
910 | |
911 // we use the information of entry points to find out if a method is | |
912 // static or non static | |
913 assert(compiler->is_c2() || | |
914 _method->is_static() == (entry_point() == _verified_entry_point), | |
915 " entry points must be same for static methods and vice versa"); | |
916 } | |
917 | |
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918 bool printnmethods = PrintNMethods |
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919 || CompilerOracle::should_print(_method) |
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920 || CompilerOracle::has_option_string(_method, "PrintNMethods"); |
0 | 921 if (printnmethods || PrintDebugInfo || PrintRelocations || PrintDependencies || PrintExceptionHandlers) { |
922 print_nmethod(printnmethods); | |
923 } | |
924 } | |
925 | |
926 | |
927 // Print a short set of xml attributes to identify this nmethod. The | |
928 // output should be embedded in some other element. | |
929 void nmethod::log_identity(xmlStream* log) const { | |
930 log->print(" compile_id='%d'", compile_id()); | |
931 const char* nm_kind = compile_kind(); | |
932 if (nm_kind != NULL) log->print(" compile_kind='%s'", nm_kind); | |
933 if (compiler() != NULL) { | |
934 log->print(" compiler='%s'", compiler()->name()); | |
935 } | |
1783 | 936 if (TieredCompilation) { |
937 log->print(" level='%d'", comp_level()); | |
938 } | |
0 | 939 } |
940 | |
941 | |
942 #define LOG_OFFSET(log, name) \ | |
943 if ((intptr_t)name##_end() - (intptr_t)name##_begin()) \ | |
944 log->print(" " XSTR(name) "_offset='%d'" , \ | |
945 (intptr_t)name##_begin() - (intptr_t)this) | |
946 | |
947 | |
948 void nmethod::log_new_nmethod() const { | |
949 if (LogCompilation && xtty != NULL) { | |
950 ttyLocker ttyl; | |
951 HandleMark hm; | |
952 xtty->begin_elem("nmethod"); | |
953 log_identity(xtty); | |
1748 | 954 xtty->print(" entry='" INTPTR_FORMAT "' size='%d'", code_begin(), size()); |
0 | 955 xtty->print(" address='" INTPTR_FORMAT "'", (intptr_t) this); |
956 | |
957 LOG_OFFSET(xtty, relocation); | |
1762
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958 LOG_OFFSET(xtty, consts); |
1748 | 959 LOG_OFFSET(xtty, insts); |
0 | 960 LOG_OFFSET(xtty, stub); |
961 LOG_OFFSET(xtty, scopes_data); | |
962 LOG_OFFSET(xtty, scopes_pcs); | |
963 LOG_OFFSET(xtty, dependencies); | |
964 LOG_OFFSET(xtty, handler_table); | |
965 LOG_OFFSET(xtty, nul_chk_table); | |
966 LOG_OFFSET(xtty, oops); | |
967 | |
968 xtty->method(method()); | |
969 xtty->stamp(); | |
970 xtty->end_elem(); | |
971 } | |
972 } | |
973 | |
974 #undef LOG_OFFSET | |
975 | |
976 | |
977 // Print out more verbose output usually for a newly created nmethod. | |
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978 void nmethod::print_on(outputStream* st, const char* msg) const { |
0 | 979 if (st != NULL) { |
980 ttyLocker ttyl; | |
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981 if (WizardMode) { |
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982 CompileTask::print_compilation(st, this, msg, /*short_form:*/ true); |
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983 st->print_cr(" (" INTPTR_FORMAT ")", this); |
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984 } else { |
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985 CompileTask::print_compilation(st, this, msg, /*short_form:*/ false); |
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986 } |
0 | 987 } |
988 } | |
989 | |
990 | |
991 void nmethod::print_nmethod(bool printmethod) { | |
992 ttyLocker ttyl; // keep the following output all in one block | |
993 if (xtty != NULL) { | |
994 xtty->begin_head("print_nmethod"); | |
995 xtty->stamp(); | |
996 xtty->end_head(); | |
997 } | |
998 // print the header part first | |
999 print(); | |
1000 // then print the requested information | |
1001 if (printmethod) { | |
1002 print_code(); | |
1003 print_pcs(); | |
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1004 if (oop_maps()) { |
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1005 oop_maps()->print(); |
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1006 } |
0 | 1007 } |
1008 if (PrintDebugInfo) { | |
1009 print_scopes(); | |
1010 } | |
1011 if (PrintRelocations) { | |
1012 print_relocations(); | |
1013 } | |
1014 if (PrintDependencies) { | |
1015 print_dependencies(); | |
1016 } | |
1017 if (PrintExceptionHandlers) { | |
1018 print_handler_table(); | |
1019 print_nul_chk_table(); | |
1020 } | |
1021 if (xtty != NULL) { | |
1022 xtty->tail("print_nmethod"); | |
1023 } | |
1024 } | |
1025 | |
1026 | |
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1027 // Promote one word from an assembly-time handle to a live embedded oop. |
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1028 inline void nmethod::initialize_immediate_oop(oop* dest, jobject handle) { |
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1029 if (handle == NULL || |
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1030 // As a special case, IC oops are initialized to 1 or -1. |
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1031 handle == (jobject) Universe::non_oop_word()) { |
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1032 (*dest) = (oop) handle; |
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1033 } else { |
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1034 (*dest) = JNIHandles::resolve_non_null(handle); |
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1035 } |
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1036 } |
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1037 |
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1038 |
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1039 // Have to have the same name because it's called by a template |
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1040 void nmethod::copy_values(GrowableArray<jobject>* array) { |
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1041 int length = array->length(); |
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1042 assert((address)(oops_begin() + length) <= (address)oops_end(), "oops big enough"); |
1563
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1043 oop* dest = oops_begin(); |
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1044 for (int index = 0 ; index < length; index++) { |
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1045 initialize_immediate_oop(&dest[index], array->at(index)); |
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1046 } |
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1047 |
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1048 // Now we can fix up all the oops in the code. We need to do this |
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1049 // in the code because the assembler uses jobjects as placeholders. |
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1050 // The code and relocations have already been initialized by the |
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1051 // CodeBlob constructor, so it is valid even at this early point to |
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1052 // iterate over relocations and patch the code. |
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1053 fix_oop_relocations(NULL, NULL, /*initialize_immediates=*/ true); |
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1054 } |
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1055 |
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1056 void nmethod::copy_values(GrowableArray<Metadata*>* array) { |
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1057 int length = array->length(); |
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1058 assert((address)(metadata_begin() + length) <= (address)metadata_end(), "big enough"); |
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1059 Metadata** dest = metadata_begin(); |
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1060 for (int index = 0 ; index < length; index++) { |
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1061 dest[index] = array->at(index); |
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1062 } |
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1063 } |
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1064 |
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1065 bool nmethod::is_at_poll_return(address pc) { |
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1066 RelocIterator iter(this, pc, pc+1); |
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1067 while (iter.next()) { |
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1068 if (iter.type() == relocInfo::poll_return_type) |
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1069 return true; |
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1070 } |
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1071 return false; |
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1072 } |
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1073 |
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1074 |
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1075 bool nmethod::is_at_poll_or_poll_return(address pc) { |
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1076 RelocIterator iter(this, pc, pc+1); |
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1077 while (iter.next()) { |
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1078 relocInfo::relocType t = iter.type(); |
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1079 if (t == relocInfo::poll_return_type || t == relocInfo::poll_type) |
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1080 return true; |
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|
1081 } |
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|
1082 return false; |
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1083 } |
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1084 |
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1085 |
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1086 void nmethod::fix_oop_relocations(address begin, address end, bool initialize_immediates) { |
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1087 // re-patch all oop-bearing instructions, just in case some oops moved |
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1088 RelocIterator iter(this, begin, end); |
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1089 while (iter.next()) { |
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1090 if (iter.type() == relocInfo::oop_type) { |
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1091 oop_Relocation* reloc = iter.oop_reloc(); |
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1092 if (initialize_immediates && reloc->oop_is_immediate()) { |
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1093 oop* dest = reloc->oop_addr(); |
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1094 initialize_immediate_oop(dest, (jobject) *dest); |
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1095 } |
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1096 // Refresh the oop-related bits of this instruction. |
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1097 reloc->fix_oop_relocation(); |
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1098 } else if (iter.type() == relocInfo::metadata_type) { |
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1099 metadata_Relocation* reloc = iter.metadata_reloc(); |
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1100 reloc->fix_metadata_relocation(); |
1563
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1101 } |
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1102 |
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1103 // There must not be any interfering patches or breakpoints. |
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1104 assert(!(iter.type() == relocInfo::breakpoint_type |
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1105 && iter.breakpoint_reloc()->active()), |
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1106 "no active breakpoint"); |
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1107 } |
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1108 } |
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1109 |
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1110 |
2375
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1111 void nmethod::verify_oop_relocations() { |
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1112 // Ensure sure that the code matches the current oop values |
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1113 RelocIterator iter(this, NULL, NULL); |
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1114 while (iter.next()) { |
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1115 if (iter.type() == relocInfo::oop_type) { |
d673ef06fe96
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1116 oop_Relocation* reloc = iter.oop_reloc(); |
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1117 if (!reloc->oop_is_immediate()) { |
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1118 reloc->verify_oop_relocation(); |
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|
1119 } |
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|
1120 } |
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|
1121 } |
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|
1122 } |
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|
1123 |
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|
1124 |
0 | 1125 ScopeDesc* nmethod::scope_desc_at(address pc) { |
1126 PcDesc* pd = pc_desc_at(pc); | |
1127 guarantee(pd != NULL, "scope must be present"); | |
1128 return new ScopeDesc(this, pd->scope_decode_offset(), | |
3018
5857923e563c
Fixed an issue with frame states in exception dispatch chains (now we are correctly rethrowing the exception immediately at entering the interpreter).
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
2891
diff
changeset
|
1129 pd->obj_decode_offset(), pd->should_reexecute(), pd->rethrow_exception(), |
1253
f70b0d9ab095
6910618: C2: Error: assert(d->is_oop(),"JVM_ArrayCopy: dst not an oop")
kvn
parents:
1250
diff
changeset
|
1130 pd->return_oop()); |
0 | 1131 } |
1132 | |
1133 | |
1134 void nmethod::clear_inline_caches() { | |
1135 assert(SafepointSynchronize::is_at_safepoint(), "cleaning of IC's only allowed at safepoint"); | |
1136 if (is_zombie()) { | |
1137 return; | |
1138 } | |
1139 | |
1140 RelocIterator iter(this); | |
1141 while (iter.next()) { | |
1142 iter.reloc()->clear_inline_cache(); | |
1143 } | |
1144 } | |
1145 | |
1146 | |
1147 void nmethod::cleanup_inline_caches() { | |
1148 | |
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|
1149 assert_locked_or_safepoint(CompiledIC_lock); |
0 | 1150 |
1151 // If the method is not entrant or zombie then a JMP is plastered over the | |
1152 // first few bytes. If an oop in the old code was there, that oop | |
1153 // should not get GC'd. Skip the first few bytes of oops on | |
1154 // not-entrant methods. | |
1155 address low_boundary = verified_entry_point(); | |
1156 if (!is_in_use()) { | |
1157 low_boundary += NativeJump::instruction_size; | |
1158 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
1159 // This means that the low_boundary is going to be a little too high. | |
1160 // This shouldn't matter, since oops of non-entrant methods are never used. | |
1161 // In fact, why are we bothering to look at oops in a non-entrant method?? | |
1162 } | |
1163 | |
1164 // Find all calls in an nmethod, and clear the ones that points to zombie methods | |
1165 ResourceMark rm; | |
1166 RelocIterator iter(this, low_boundary); | |
1167 while(iter.next()) { | |
1168 switch(iter.type()) { | |
1169 case relocInfo::virtual_call_type: | |
1170 case relocInfo::opt_virtual_call_type: { | |
1171 CompiledIC *ic = CompiledIC_at(iter.reloc()); | |
1172 // Ok, to lookup references to zombies here | |
1173 CodeBlob *cb = CodeCache::find_blob_unsafe(ic->ic_destination()); | |
1174 if( cb != NULL && cb->is_nmethod() ) { | |
1175 nmethod* nm = (nmethod*)cb; | |
1176 // Clean inline caches pointing to both zombie and not_entrant methods | |
1202 | 1177 if (!nm->is_in_use() || (nm->method()->code() != nm)) ic->set_to_clean(); |
0 | 1178 } |
1179 break; | |
1180 } | |
1181 case relocInfo::static_call_type: { | |
1182 CompiledStaticCall *csc = compiledStaticCall_at(iter.reloc()); | |
1183 CodeBlob *cb = CodeCache::find_blob_unsafe(csc->destination()); | |
1184 if( cb != NULL && cb->is_nmethod() ) { | |
1185 nmethod* nm = (nmethod*)cb; | |
1186 // Clean inline caches pointing to both zombie and not_entrant methods | |
1202 | 1187 if (!nm->is_in_use() || (nm->method()->code() != nm)) csc->set_to_clean(); |
0 | 1188 } |
1189 break; | |
1190 } | |
1191 } | |
1192 } | |
1193 } | |
1194 | |
989
148e5441d916
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|
1195 // This is a private interface with the sweeper. |
0 | 1196 void nmethod::mark_as_seen_on_stack() { |
1197 assert(is_not_entrant(), "must be a non-entrant method"); | |
1644
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1198 // Set the traversal mark to ensure that the sweeper does 2 |
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|
1199 // cleaning passes before moving to zombie. |
0 | 1200 set_stack_traversal_mark(NMethodSweeper::traversal_count()); |
1201 } | |
1202 | |
2342
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2321
diff
changeset
|
1203 // Tell if a non-entrant method can be converted to a zombie (i.e., |
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
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|
1204 // there are no activations on the stack, not in use by the VM, |
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2321
diff
changeset
|
1205 // and not in use by the ServiceThread) |
0 | 1206 bool nmethod::can_not_entrant_be_converted() { |
1207 assert(is_not_entrant(), "must be a non-entrant method"); | |
1208 | |
1209 // Since the nmethod sweeper only does partial sweep the sweeper's traversal | |
1210 // count can be greater than the stack traversal count before it hits the | |
1211 // nmethod for the second time. | |
2342
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2321
diff
changeset
|
1212 return stack_traversal_mark()+1 < NMethodSweeper::traversal_count() && |
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
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diff
changeset
|
1213 !is_locked_by_vm(); |
0 | 1214 } |
1215 | |
1216 void nmethod::inc_decompile_count() { | |
5036
8e6db1a5c537
exit the VM when an endless recompilation is detected
Christian Haeubl <christian.haeubl@oracle.com>
parents:
4970
diff
changeset
|
1217 #ifndef GRAAL |
1783 | 1218 if (!is_compiled_by_c2()) return; |
5036
8e6db1a5c537
exit the VM when an endless recompilation is detected
Christian Haeubl <christian.haeubl@oracle.com>
parents:
4970
diff
changeset
|
1219 #endif |
0 | 1220 // Could be gated by ProfileTraps, but do not bother... |
6725
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|
1221 Method* m = method(); |
0 | 1222 if (m == NULL) return; |
6725
da91efe96a93
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coleenp
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|
1223 MethodData* mdo = m->method_data(); |
0 | 1224 if (mdo == NULL) return; |
6725
da91efe96a93
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coleenp
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changeset
|
1225 // There is a benign race here. See comments in methodData.hpp. |
0 | 1226 mdo->inc_decompile_count(); |
1227 } | |
1228 | |
1229 void nmethod::make_unloaded(BoolObjectClosure* is_alive, oop cause) { | |
1230 | |
1231 post_compiled_method_unload(); | |
1232 | |
1233 // Since this nmethod is being unloaded, make sure that dependencies | |
1234 // recorded in instanceKlasses get flushed and pass non-NULL closure to | |
1235 // indicate that this work is being done during a GC. | |
1236 assert(Universe::heap()->is_gc_active(), "should only be called during gc"); | |
1237 assert(is_alive != NULL, "Should be non-NULL"); | |
1238 // A non-NULL is_alive closure indicates that this is being called during GC. | |
1239 flush_dependencies(is_alive); | |
1240 | |
1241 // Break cycle between nmethod & method | |
1242 if (TraceClassUnloading && WizardMode) { | |
1243 tty->print_cr("[Class unloading: Making nmethod " INTPTR_FORMAT | |
6725
da91efe96a93
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coleenp
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diff
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|
1244 " unloadable], Method*(" INTPTR_FORMAT |
0 | 1245 "), cause(" INTPTR_FORMAT ")", |
1246 this, (address)_method, (address)cause); | |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
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931
diff
changeset
|
1247 if (!Universe::heap()->is_gc_active()) |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
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diff
changeset
|
1248 cause->klass()->print(); |
0 | 1249 } |
941 | 1250 // Unlink the osr method, so we do not look this up again |
1251 if (is_osr_method()) { | |
1252 invalidate_osr_method(); | |
1253 } | |
6725
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coleenp
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6266
diff
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|
1254 // If _method is already NULL the Method* is about to be unloaded, |
0 | 1255 // so we don't have to break the cycle. Note that it is possible to |
6725
da91efe96a93
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coleenp
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6266
diff
changeset
|
1256 // have the Method* live here, in case we unload the nmethod because |
da91efe96a93
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coleenp
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6266
diff
changeset
|
1257 // it is pointing to some oop (other than the Method*) being unloaded. |
0 | 1258 if (_method != NULL) { |
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
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changeset
|
1259 // OSR methods point to the Method*, but the Method* does not |
0 | 1260 // point back! |
1261 if (_method->code() == this) { | |
1262 _method->clear_code(); // Break a cycle | |
1263 } | |
1264 _method = NULL; // Clear the method of this dead nmethod | |
1265 } | |
4320
125678ef7587
Fix compiled method unloading.
Andreas Woess <andreas.woess@jku.at>
parents:
4137
diff
changeset
|
1266 |
125678ef7587
Fix compiled method unloading.
Andreas Woess <andreas.woess@jku.at>
parents:
4137
diff
changeset
|
1267 #ifdef GRAAL |
6948
e522a00b91aa
Merge with http://hg.openjdk.java.net/hsx/hsx25/hotspot/ after NPG - C++ build works
Doug Simon <doug.simon@oracle.com>
diff
changeset
|
1268 if (graal_installed_code() != NULL) { |
e522a00b91aa
Merge with http://hg.openjdk.java.net/hsx/hsx25/hotspot/ after NPG - C++ build works
Doug Simon <doug.simon@oracle.com>
diff
changeset
|
1269 HotSpotInstalledCode::set_nmethod(_graal_installed_code, 0); |
e522a00b91aa
Merge with http://hg.openjdk.java.net/hsx/hsx25/hotspot/ after NPG - C++ build works
Doug Simon <doug.simon@oracle.com>
diff
changeset
|
1270 _graal_installed_code = NULL; |
4320
125678ef7587
Fix compiled method unloading.
Andreas Woess <andreas.woess@jku.at>
parents:
4137
diff
changeset
|
1271 } |
125678ef7587
Fix compiled method unloading.
Andreas Woess <andreas.woess@jku.at>
parents:
4137
diff
changeset
|
1272 #endif |
125678ef7587
Fix compiled method unloading.
Andreas Woess <andreas.woess@jku.at>
parents:
4137
diff
changeset
|
1273 |
0 | 1274 // Make the class unloaded - i.e., change state and notify sweeper |
1538
bfe29ec02863
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never
parents:
1490
diff
changeset
|
1275 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint"); |
0 | 1276 if (is_in_use()) { |
1277 // Transitioning directly from live to unloaded -- so | |
1278 // we need to force a cache clean-up; remember this | |
1279 // for later on. | |
1280 CodeCache::set_needs_cache_clean(true); | |
1281 } | |
1644
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parents:
1616
diff
changeset
|
1282 _state = unloaded; |
0 | 1283 |
1109
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1284 // Log the unloading. |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1285 log_state_change(); |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1286 |
6725
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coleenp
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changeset
|
1287 // The Method* is gone at this point |
0 | 1288 assert(_method == NULL, "Tautology"); |
1289 | |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1290 set_osr_link(NULL); |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1291 //set_scavenge_root_link(NULL); // done by prune_scavenge_root_nmethods |
0 | 1292 NMethodSweeper::notify(this); |
1293 } | |
1294 | |
1295 void nmethod::invalidate_osr_method() { | |
1296 assert(_entry_bci != InvocationEntryBci, "wrong kind of nmethod"); | |
1297 // Remove from list of active nmethods | |
1298 if (method() != NULL) | |
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6806
diff
changeset
|
1299 method()->method_holder()->remove_osr_nmethod(this); |
0 | 1300 // Set entry as invalid |
1301 _entry_bci = InvalidOSREntryBci; | |
1302 } | |
1303 | |
1109
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1304 void nmethod::log_state_change() const { |
0 | 1305 if (LogCompilation) { |
1306 if (xtty != NULL) { | |
1307 ttyLocker ttyl; // keep the following output all in one block | |
1644
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1308 if (_state == unloaded) { |
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1309 xtty->begin_elem("make_unloaded thread='" UINTX_FORMAT "'", |
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1310 os::current_thread_id()); |
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1311 } else { |
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1312 xtty->begin_elem("make_not_entrant thread='" UINTX_FORMAT "'%s", |
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1313 os::current_thread_id(), |
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1314 (_state == zombie ? " zombie='1'" : "")); |
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1315 } |
0 | 1316 log_identity(xtty); |
1317 xtty->stamp(); | |
1318 xtty->end_elem(); | |
1319 } | |
1320 } | |
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1321 if (PrintCompilation && _state != unloaded) { |
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1322 print_on(tty, _state == zombie ? "made zombie" : "made not entrant"); |
0 | 1323 } |
1324 } | |
1325 | |
1326 // Common functionality for both make_not_entrant and make_zombie | |
1141 | 1327 bool nmethod::make_not_entrant_or_zombie(unsigned int state) { |
0 | 1328 assert(state == zombie || state == not_entrant, "must be zombie or not_entrant"); |
2342
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1329 assert(!is_zombie(), "should not already be a zombie"); |
0 | 1330 |
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1331 // Make sure neither the nmethod nor the method is flushed in case of a safepoint in code below. |
0 | 1332 nmethodLocker nml(this); |
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1333 methodHandle the_method(method()); |
1726 | 1334 No_Safepoint_Verifier nsv; |
0 | 1335 |
1336 { | |
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1337 // invalidate osr nmethod before acquiring the patching lock since |
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1338 // they both acquire leaf locks and we don't want a deadlock. |
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1339 // This logic is equivalent to the logic below for patching the |
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1340 // verified entry point of regular methods. |
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1341 if (is_osr_method()) { |
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1342 // this effectively makes the osr nmethod not entrant |
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1343 invalidate_osr_method(); |
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1344 } |
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1345 |
0 | 1346 // Enter critical section. Does not block for safepoint. |
1347 MutexLockerEx pl(Patching_lock, Mutex::_no_safepoint_check_flag); | |
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1348 |
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1349 if (_state == state) { |
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1350 // another thread already performed this transition so nothing |
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1351 // to do, but return false to indicate this. |
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1352 return false; |
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1353 } |
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1354 |
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1355 #ifdef GRAAL |
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1356 if (graal_installed_code() != NULL) { |
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1357 HotSpotInstalledCode::set_nmethod(_graal_installed_code, 0); |
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1358 _graal_installed_code = NULL; |
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1359 } |
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1360 #endif |
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1361 |
0 | 1362 // The caller can be calling the method statically or through an inline |
1363 // cache call. | |
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1364 if (!is_osr_method() && !is_not_entrant()) { |
0 | 1365 NativeJump::patch_verified_entry(entry_point(), verified_entry_point(), |
1366 SharedRuntime::get_handle_wrong_method_stub()); | |
1367 } | |
1368 | |
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1369 if (is_in_use()) { |
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1370 // It's a true state change, so mark the method as decompiled. |
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1371 // Do it only for transition from alive. |
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1372 inc_decompile_count(); |
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1373 } |
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1374 |
0 | 1375 // Change state |
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1376 _state = state; |
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1377 |
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1378 // Log the transition once |
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1379 log_state_change(); |
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1380 |
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1381 // Remove nmethod from method. |
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1382 // We need to check if both the _code and _from_compiled_code_entry_point |
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1383 // refer to this nmethod because there is a race in setting these two fields |
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1384 // in Method* as seen in bugid 4947125. |
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1385 // If the vep() points to the zombie nmethod, the memory for the nmethod |
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1386 // could be flushed and the compiler and vtable stubs could still call |
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1387 // through it. |
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1388 if (method() != NULL && (method()->code() == this || |
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1389 method()->from_compiled_entry() == verified_entry_point())) { |
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1390 HandleMark hm; |
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1391 method()->clear_code(); |
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1392 } |
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1393 |
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1394 if (state == not_entrant) { |
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1395 mark_as_seen_on_stack(); |
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1396 } |
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1397 |
0 | 1398 } // leave critical region under Patching_lock |
1399 | |
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1400 // When the nmethod becomes zombie it is no longer alive so the |
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1401 // dependencies must be flushed. nmethods in the not_entrant |
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1402 // state will be flushed later when the transition to zombie |
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1403 // happens or they get unloaded. |
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1404 if (state == zombie) { |
1726 | 1405 { |
1406 // Flushing dependecies must be done before any possible | |
1407 // safepoint can sneak in, otherwise the oops used by the | |
1408 // dependency logic could have become stale. | |
1409 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
1410 flush_dependencies(NULL); | |
1411 } | |
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1412 |
2342
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1413 // zombie only - if a JVMTI agent has enabled the CompiledMethodUnload |
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1414 // event and it hasn't already been reported for this nmethod then |
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1415 // report it now. The event may have been reported earilier if the GC |
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1416 // marked it for unloading). JvmtiDeferredEventQueue support means |
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1417 // we no longer go to a safepoint here. |
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1418 post_compiled_method_unload(); |
1726 | 1419 |
1420 #ifdef ASSERT | |
1421 // It's no longer safe to access the oops section since zombie | |
1422 // nmethods aren't scanned for GC. | |
1423 _oops_are_stale = true; | |
1424 #endif | |
1538
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1425 } else { |
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1426 assert(state == not_entrant, "other cases may need to be handled differently"); |
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1427 } |
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1428 |
0 | 1429 if (TraceCreateZombies) { |
1430 tty->print_cr("nmethod <" INTPTR_FORMAT "> code made %s", this, (state == not_entrant) ? "not entrant" : "zombie"); | |
1431 } | |
1432 | |
1433 // Make sweeper aware that there is a zombie method that needs to be removed | |
1434 NMethodSweeper::notify(this); | |
1435 | |
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1436 return true; |
0 | 1437 } |
1438 | |
1439 void nmethod::flush() { | |
1440 // Note that there are no valid oops in the nmethod anymore. | |
1441 assert(is_zombie() || (is_osr_method() && is_unloaded()), "must be a zombie method"); | |
1442 assert(is_marked_for_reclamation() || (is_osr_method() && is_unloaded()), "must be marked for reclamation"); | |
1443 | |
1444 assert (!is_locked_by_vm(), "locked methods shouldn't be flushed"); | |
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1445 assert_locked_or_safepoint(CodeCache_lock); |
0 | 1446 |
1447 // completely deallocate this method | |
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1448 Events::log(JavaThread::current(), "flushing nmethod " INTPTR_FORMAT, this); |
0 | 1449 if (PrintMethodFlushing) { |
1202 | 1450 tty->print_cr("*flushing nmethod %3d/" INTPTR_FORMAT ". Live blobs:" UINT32_FORMAT "/Free CodeCache:" SIZE_FORMAT "Kb", |
1451 _compile_id, this, CodeCache::nof_blobs(), CodeCache::unallocated_capacity()/1024); | |
0 | 1452 } |
1453 | |
1454 // We need to deallocate any ExceptionCache data. | |
1455 // Note that we do not need to grab the nmethod lock for this, it | |
1456 // better be thread safe if we're disposing of it! | |
1457 ExceptionCache* ec = exception_cache(); | |
1458 set_exception_cache(NULL); | |
1459 while(ec != NULL) { | |
1460 ExceptionCache* next = ec->next(); | |
1461 delete ec; | |
1462 ec = next; | |
1463 } | |
1464 | |
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1465 if (on_scavenge_root_list()) { |
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1466 CodeCache::drop_scavenge_root_nmethod(this); |
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1467 } |
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1468 |
1202 | 1469 if (is_speculatively_disconnected()) { |
1470 CodeCache::remove_saved_code(this); | |
1471 } | |
1472 | |
1692 | 1473 #ifdef SHARK |
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1474 ((SharkCompiler *) compiler())->free_compiled_method(insts_begin()); |
1692 | 1475 #endif // SHARK |
1476 | |
0 | 1477 ((CodeBlob*)(this))->flush(); |
1478 | |
1479 CodeCache::free(this); | |
1480 } | |
1481 | |
1482 | |
1483 // | |
1484 // Notify all classes this nmethod is dependent on that it is no | |
1485 // longer dependent. This should only be called in two situations. | |
1486 // First, when a nmethod transitions to a zombie all dependents need | |
1487 // to be clear. Since zombification happens at a safepoint there's no | |
1488 // synchronization issues. The second place is a little more tricky. | |
1489 // During phase 1 of mark sweep class unloading may happen and as a | |
1490 // result some nmethods may get unloaded. In this case the flushing | |
1491 // of dependencies must happen during phase 1 since after GC any | |
1492 // dependencies in the unloaded nmethod won't be updated, so | |
1493 // traversing the dependency information in unsafe. In that case this | |
1494 // function is called with a non-NULL argument and this function only | |
1495 // notifies instanceKlasses that are reachable | |
1496 | |
1497 void nmethod::flush_dependencies(BoolObjectClosure* is_alive) { | |
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1498 assert_locked_or_safepoint(CodeCache_lock); |
0 | 1499 assert(Universe::heap()->is_gc_active() == (is_alive != NULL), |
1500 "is_alive is non-NULL if and only if we are called during GC"); | |
1501 if (!has_flushed_dependencies()) { | |
1502 set_has_flushed_dependencies(); | |
1503 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
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1504 Klass* klass = deps.context_type(); |
0 | 1505 if (klass == NULL) continue; // ignore things like evol_method |
1506 | |
1507 // During GC the is_alive closure is non-NULL, and is used to | |
1508 // determine liveness of dependees that need to be updated. | |
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1509 if (is_alive == NULL || klass->is_loader_alive(is_alive)) { |
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1510 InstanceKlass::cast(klass)->remove_dependent_nmethod(this); |
0 | 1511 } |
1512 } | |
1513 } | |
1514 } | |
1515 | |
1516 | |
1517 // If this oop is not live, the nmethod can be unloaded. | |
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|
1518 bool nmethod::can_unload(BoolObjectClosure* is_alive, oop* root, bool unloading_occurred) { |
0 | 1519 assert(root != NULL, "just checking"); |
1520 oop obj = *root; | |
1521 if (obj == NULL || is_alive->do_object_b(obj)) { | |
1522 return false; | |
1523 } | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1524 |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1525 // If ScavengeRootsInCode is true, an nmethod might be unloaded |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1526 // simply because one of its constant oops has gone dead. |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1527 // No actual classes need to be unloaded in order for this to occur. |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1528 assert(unloading_occurred || ScavengeRootsInCode, "Inconsistency in unloading"); |
0 | 1529 make_unloaded(is_alive, obj); |
1530 return true; | |
1531 } | |
1532 | |
1533 // ------------------------------------------------------------------ | |
1534 // post_compiled_method_load_event | |
1535 // new method for install_code() path | |
1536 // Transfer information from compilation to jvmti | |
1537 void nmethod::post_compiled_method_load_event() { | |
1538 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1539 Method* moop = method(); |
4006 | 1540 #ifndef USDT2 |
0 | 1541 HS_DTRACE_PROBE8(hotspot, compiled__method__load, |
1542 moop->klass_name()->bytes(), | |
1543 moop->klass_name()->utf8_length(), | |
1544 moop->name()->bytes(), | |
1545 moop->name()->utf8_length(), | |
1546 moop->signature()->bytes(), | |
1547 moop->signature()->utf8_length(), | |
1748 | 1548 insts_begin(), insts_size()); |
4006 | 1549 #else /* USDT2 */ |
1550 HOTSPOT_COMPILED_METHOD_LOAD( | |
1551 (char *) moop->klass_name()->bytes(), | |
1552 moop->klass_name()->utf8_length(), | |
1553 (char *) moop->name()->bytes(), | |
1554 moop->name()->utf8_length(), | |
1555 (char *) moop->signature()->bytes(), | |
1556 moop->signature()->utf8_length(), | |
1557 insts_begin(), insts_size()); | |
1558 #endif /* USDT2 */ | |
0 | 1559 |
1616
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1560 if (JvmtiExport::should_post_compiled_method_load() || |
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1561 JvmtiExport::should_post_compiled_method_unload()) { |
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1562 get_and_cache_jmethod_id(); |
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1563 } |
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1564 |
0 | 1565 if (JvmtiExport::should_post_compiled_method_load()) { |
2195
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1566 // Let the Service thread (which is a real Java thread) post the event |
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1567 MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag); |
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1568 JvmtiDeferredEventQueue::enqueue( |
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1569 JvmtiDeferredEvent::compiled_method_load_event(this)); |
0 | 1570 } |
1571 } | |
1572 | |
1616
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1573 jmethodID nmethod::get_and_cache_jmethod_id() { |
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1574 if (_jmethod_id == NULL) { |
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1575 // Cache the jmethod_id since it can no longer be looked up once the |
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1576 // method itself has been marked for unloading. |
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1577 _jmethod_id = method()->jmethod_id(); |
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1578 } |
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1579 return _jmethod_id; |
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1580 } |
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1581 |
0 | 1582 void nmethod::post_compiled_method_unload() { |
1577
852d0157c696
6956931: assert(SafepointSynchronize::is_at_safepoint()) failed: must be executed at a safepoint
never
parents:
1563
diff
changeset
|
1583 if (unload_reported()) { |
852d0157c696
6956931: assert(SafepointSynchronize::is_at_safepoint()) failed: must be executed at a safepoint
never
parents:
1563
diff
changeset
|
1584 // During unloading we transition to unloaded and then to zombie |
852d0157c696
6956931: assert(SafepointSynchronize::is_at_safepoint()) failed: must be executed at a safepoint
never
parents:
1563
diff
changeset
|
1585 // and the unloading is reported during the first transition. |
852d0157c696
6956931: assert(SafepointSynchronize::is_at_safepoint()) failed: must be executed at a safepoint
never
parents:
1563
diff
changeset
|
1586 return; |
852d0157c696
6956931: assert(SafepointSynchronize::is_at_safepoint()) failed: must be executed at a safepoint
never
parents:
1563
diff
changeset
|
1587 } |
852d0157c696
6956931: assert(SafepointSynchronize::is_at_safepoint()) failed: must be executed at a safepoint
never
parents:
1563
diff
changeset
|
1588 |
0 | 1589 assert(_method != NULL && !is_unloaded(), "just checking"); |
1590 DTRACE_METHOD_UNLOAD_PROBE(method()); | |
1591 | |
1592 // If a JVMTI agent has enabled the CompiledMethodUnload event then | |
1616
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1593 // post the event. Sometime later this nmethod will be made a zombie |
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1594 // by the sweeper but the Method* will not be valid at that point. |
1616
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1595 // If the _jmethod_id is null then no load event was ever requested |
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1596 // so don't bother posting the unload. The main reason for this is |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1597 // that the jmethodID is a weak reference to the Method* so if |
1616
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1598 // it's being unloaded there's no way to look it up since the weak |
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1599 // ref will have been cleared. |
38e8278318ca
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
1602
diff
changeset
|
1600 if (_jmethod_id != NULL && JvmtiExport::should_post_compiled_method_unload()) { |
0 | 1601 assert(!unload_reported(), "already unloaded"); |
2195
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1602 JvmtiDeferredEvent event = |
2342
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2321
diff
changeset
|
1603 JvmtiDeferredEvent::compiled_method_unload_event(this, |
2195
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1604 _jmethod_id, insts_begin()); |
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1605 if (SafepointSynchronize::is_at_safepoint()) { |
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1606 // Don't want to take the queueing lock. Add it as pending and |
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1607 // it will get enqueued later. |
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1608 JvmtiDeferredEventQueue::add_pending_event(event); |
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1609 } else { |
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1610 MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag); |
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1611 JvmtiDeferredEventQueue::enqueue(event); |
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1612 } |
0 | 1613 } |
1614 | |
1615 // The JVMTI CompiledMethodUnload event can be enabled or disabled at | |
1616 // any time. As the nmethod is being unloaded now we mark it has | |
1617 // having the unload event reported - this will ensure that we don't | |
1618 // attempt to report the event in the unlikely scenario where the | |
1619 // event is enabled at the time the nmethod is made a zombie. | |
1620 set_unload_reported(); | |
1621 } | |
1622 | |
1623 // This is called at the end of the strong tracing/marking phase of a | |
1624 // GC to unload an nmethod if it contains otherwise unreachable | |
1625 // oops. | |
1626 | |
6787
8966c2d65d96
7200470: KeepAliveClosure not needed in CodeCache::do_unloading
brutisso
parents:
6725
diff
changeset
|
1627 void nmethod::do_unloading(BoolObjectClosure* is_alive, bool unloading_occurred) { |
0 | 1628 // Make sure the oop's ready to receive visitors |
1629 assert(!is_zombie() && !is_unloaded(), | |
1630 "should not call follow on zombie or unloaded nmethod"); | |
1631 | |
1632 // If the method is not entrant then a JMP is plastered over the | |
1633 // first few bytes. If an oop in the old code was there, that oop | |
1634 // should not get GC'd. Skip the first few bytes of oops on | |
1635 // not-entrant methods. | |
1636 address low_boundary = verified_entry_point(); | |
1637 if (is_not_entrant()) { | |
1638 low_boundary += NativeJump::instruction_size; | |
1639 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
1640 // (See comment above.) | |
1641 } | |
1642 | |
1643 // The RedefineClasses() API can cause the class unloading invariant | |
1644 // to no longer be true. See jvmtiExport.hpp for details. | |
1645 // Also, leave a debugging breadcrumb in local flag. | |
1646 bool a_class_was_redefined = JvmtiExport::has_redefined_a_class(); | |
1647 if (a_class_was_redefined) { | |
1648 // This set of the unloading_occurred flag is done before the | |
1649 // call to post_compiled_method_unload() so that the unloading | |
1650 // of this nmethod is reported. | |
1651 unloading_occurred = true; | |
1652 } | |
1653 | |
6948
e522a00b91aa
Merge with http://hg.openjdk.java.net/hsx/hsx25/hotspot/ after NPG - C++ build works
Doug Simon <doug.simon@oracle.com>
diff
changeset
|
1654 #ifdef GRAAL |
e522a00b91aa
Merge with http://hg.openjdk.java.net/hsx/hsx25/hotspot/ after NPG - C++ build works
Doug Simon <doug.simon@oracle.com>
diff
changeset
|
1655 // Follow Graal method |
e522a00b91aa
Merge with http://hg.openjdk.java.net/hsx/hsx25/hotspot/ after NPG - C++ build works
Doug Simon <doug.simon@oracle.com>
diff
changeset
|
1656 if (_graal_installed_code == Universe::non_oop_word()) { |
e522a00b91aa
Merge with http://hg.openjdk.java.net/hsx/hsx25/hotspot/ after NPG - C++ build works
Doug Simon <doug.simon@oracle.com>
diff
changeset
|
1657 // May have not yet finished initializing a non-default nmethod |
0 | 1658 return; |
1659 } | |
6948
e522a00b91aa
Merge with http://hg.openjdk.java.net/hsx/hsx25/hotspot/ after NPG - C++ build works
Doug Simon <doug.simon@oracle.com>
diff
changeset
|
1660 if (_graal_installed_code != NULL && can_unload(is_alive, (oop*)&_graal_installed_code, unloading_occurred)) { |
3683
345c3bbf9c3c
store RiCompiledMethod in nmethod and:
Lukas Stadler <lukas.stadler@jku.at>
parents:
3464
diff
changeset
|
1661 return; |
345c3bbf9c3c
store RiCompiledMethod in nmethod and:
Lukas Stadler <lukas.stadler@jku.at>
parents:
3464
diff
changeset
|
1662 } |
6948
e522a00b91aa
Merge with http://hg.openjdk.java.net/hsx/hsx25/hotspot/ after NPG - C++ build works
Doug Simon <doug.simon@oracle.com>
diff
changeset
|
1663 #endif |
3683
345c3bbf9c3c
store RiCompiledMethod in nmethod and:
Lukas Stadler <lukas.stadler@jku.at>
parents:
3464
diff
changeset
|
1664 |
0 | 1665 // Exception cache |
1666 ExceptionCache* ec = exception_cache(); | |
1667 while (ec != NULL) { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1668 Klass* ex_klass = ec->exception_type(); |
0 | 1669 ExceptionCache* next_ec = ec->next(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1670 if (ex_klass != NULL && !ex_klass->is_loader_alive(is_alive)) { |
0 | 1671 remove_from_exception_cache(ec); |
1672 } | |
1673 ec = next_ec; | |
1674 } | |
1675 | |
1676 // If class unloading occurred we first iterate over all inline caches and | |
1677 // clear ICs where the cached oop is referring to an unloaded klass or method. | |
1678 // The remaining live cached oops will be traversed in the relocInfo::oop_type | |
1679 // iteration below. | |
1680 if (unloading_occurred) { | |
1681 RelocIterator iter(this, low_boundary); | |
1682 while(iter.next()) { | |
1683 if (iter.type() == relocInfo::virtual_call_type) { | |
1684 CompiledIC *ic = CompiledIC_at(iter.reloc()); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1685 if (ic->is_icholder_call()) { |
0 | 1686 // The only exception is compiledICHolder oops which may |
1687 // yet be marked below. (We check this further below). | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1688 CompiledICHolder* cichk_oop = ic->cached_icholder(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1689 if (cichk_oop->holder_method()->method_holder()->is_loader_alive(is_alive) && |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1690 cichk_oop->holder_klass()->is_loader_alive(is_alive)) { |
0 | 1691 continue; |
1692 } | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1693 } else { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1694 Metadata* ic_oop = ic->cached_metadata(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1695 if (ic_oop != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1696 if (ic_oop->is_klass()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1697 if (((Klass*)ic_oop)->is_loader_alive(is_alive)) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1698 continue; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1699 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1700 } else if (ic_oop->is_method()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1701 if (((Method*)ic_oop)->method_holder()->is_loader_alive(is_alive)) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1702 continue; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1703 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1704 } else { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1705 ShouldNotReachHere(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1706 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1707 } |
0 | 1708 } |
1709 ic->set_to_clean(); | |
1710 } | |
1711 } | |
1712 } | |
1713 | |
1714 // Compiled code | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1715 { |
0 | 1716 RelocIterator iter(this, low_boundary); |
1717 while (iter.next()) { | |
1718 if (iter.type() == relocInfo::oop_type) { | |
1719 oop_Relocation* r = iter.oop_reloc(); | |
1720 // In this loop, we must only traverse those oops directly embedded in | |
1721 // the code. Other oops (oop_index>0) are seen as part of scopes_oops. | |
1722 assert(1 == (r->oop_is_immediate()) + | |
1723 (r->oop_addr() >= oops_begin() && r->oop_addr() < oops_end()), | |
1724 "oop must be found in exactly one place"); | |
1725 if (r->oop_is_immediate() && r->oop_value() != NULL) { | |
6787
8966c2d65d96
7200470: KeepAliveClosure not needed in CodeCache::do_unloading
brutisso
parents:
6725
diff
changeset
|
1726 if (can_unload(is_alive, r->oop_addr(), unloading_occurred)) { |
0 | 1727 return; |
1728 } | |
1729 } | |
1730 } | |
1731 } | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1732 } |
0 | 1733 |
1734 | |
1735 // Scopes | |
1736 for (oop* p = oops_begin(); p < oops_end(); p++) { | |
1737 if (*p == Universe::non_oop_word()) continue; // skip non-oops | |
6787
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1738 if (can_unload(is_alive, p, unloading_occurred)) { |
0 | 1739 return; |
1740 } | |
1741 } | |
1742 | |
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1743 // Ensure that all metadata is still alive |
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1744 verify_metadata_loaders(low_boundary, is_alive); |
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1745 } |
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1746 |
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1747 #ifdef ASSERT |
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1748 |
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1749 class CheckClass : AllStatic { |
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1750 static BoolObjectClosure* _is_alive; |
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1751 |
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1752 // Check class_loader is alive for this bit of metadata. |
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1753 static void check_class(Metadata* md) { |
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1754 Klass* klass = NULL; |
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1755 if (md->is_klass()) { |
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1756 klass = ((Klass*)md); |
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1757 } else if (md->is_method()) { |
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1758 klass = ((Method*)md)->method_holder(); |
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1759 } else if (md->is_methodData()) { |
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1760 klass = ((MethodData*)md)->method()->method_holder(); |
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1761 } else { |
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1762 md->print(); |
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1763 ShouldNotReachHere(); |
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1764 } |
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1765 assert(klass->is_loader_alive(_is_alive), "must be alive"); |
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1766 } |
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1767 public: |
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1768 static void do_check_class(BoolObjectClosure* is_alive, nmethod* nm) { |
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1769 assert(SafepointSynchronize::is_at_safepoint(), "this is only ok at safepoint"); |
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1770 _is_alive = is_alive; |
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1771 nm->metadata_do(check_class); |
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1772 } |
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1773 }; |
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1774 |
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1775 // This is called during a safepoint so can use static data |
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1776 BoolObjectClosure* CheckClass::_is_alive = NULL; |
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1777 #endif // ASSERT |
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1778 |
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1779 |
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1780 // Processing of oop references should have been sufficient to keep |
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1781 // all strong references alive. Any weak references should have been |
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1782 // cleared as well. Visit all the metadata and ensure that it's |
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1783 // really alive. |
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1784 void nmethod::verify_metadata_loaders(address low_boundary, BoolObjectClosure* is_alive) { |
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1785 #ifdef ASSERT |
0 | 1786 RelocIterator iter(this, low_boundary); |
1787 while (iter.next()) { | |
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1788 // static_stub_Relocations may have dangling references to |
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1789 // Method*s so trim them out here. Otherwise it looks like |
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1790 // compiled code is maintaining a link to dead metadata. |
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1791 address static_call_addr = NULL; |
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1792 if (iter.type() == relocInfo::opt_virtual_call_type) { |
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1793 CompiledIC* cic = CompiledIC_at(iter.reloc()); |
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1794 if (!cic->is_call_to_interpreted()) { |
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1795 static_call_addr = iter.addr(); |
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1796 } |
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1797 } else if (iter.type() == relocInfo::static_call_type) { |
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1798 CompiledStaticCall* csc = compiledStaticCall_at(iter.reloc()); |
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1799 if (!csc->is_call_to_interpreted()) { |
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1800 static_call_addr = iter.addr(); |
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1801 } |
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1802 } |
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1803 if (static_call_addr != NULL) { |
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1804 RelocIterator sciter(this, low_boundary); |
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1805 while (sciter.next()) { |
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1806 if (sciter.type() == relocInfo::static_stub_type && |
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1807 sciter.static_stub_reloc()->static_call() == static_call_addr) { |
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1808 sciter.static_stub_reloc()->clear_inline_cache(); |
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1809 } |
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1810 } |
0 | 1811 } |
1812 } | |
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1813 // Check that the metadata embedded in the nmethod is alive |
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1814 CheckClass::do_check_class(is_alive, this); |
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1815 #endif |
0 | 1816 } |
1817 | |
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1818 |
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1819 // Iterate over metadata calling this function. Used by RedefineClasses |
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1820 void nmethod::metadata_do(void f(Metadata*)) { |
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1821 address low_boundary = verified_entry_point(); |
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1822 if (is_not_entrant()) { |
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1823 low_boundary += NativeJump::instruction_size; |
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1824 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. |
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1825 // (See comment above.) |
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1826 } |
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1827 { |
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1828 // Visit all immediate references that are embedded in the instruction stream. |
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1829 RelocIterator iter(this, low_boundary); |
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1830 while (iter.next()) { |
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1831 if (iter.type() == relocInfo::metadata_type ) { |
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1832 metadata_Relocation* r = iter.metadata_reloc(); |
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1833 // In this lmetadata, we must only follow those metadatas directly embedded in |
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1834 // the code. Other metadatas (oop_index>0) are seen as part of |
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1835 // the metadata section below. |
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1836 assert(1 == (r->metadata_is_immediate()) + |
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1837 (r->metadata_addr() >= metadata_begin() && r->metadata_addr() < metadata_end()), |
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1838 "metadata must be found in exactly one place"); |
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1839 if (r->metadata_is_immediate() && r->metadata_value() != NULL) { |
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1840 Metadata* md = r->metadata_value(); |
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1841 f(md); |
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1842 } |
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1843 } |
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1844 } |
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1845 } |
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1846 |
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1847 // Visit the metadata section |
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1848 for (Metadata** p = metadata_begin(); p < metadata_end(); p++) { |
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1849 if (*p == Universe::non_oop_word() || *p == NULL) continue; // skip non-oops |
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1850 Metadata* md = *p; |
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1851 f(md); |
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1852 } |
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1853 // Call function Method*, not embedded in these other places. |
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1854 if (_method != NULL) f(_method); |
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1855 } |
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1856 |
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1857 |
941 | 1858 // This method is called twice during GC -- once while |
1859 // tracing the "active" nmethods on thread stacks during | |
1860 // the (strong) marking phase, and then again when walking | |
1861 // the code cache contents during the weak roots processing | |
1862 // phase. The two uses are distinguished by means of the | |
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1863 // 'do_strong_roots_only' flag, which is true in the first |
941 | 1864 // case. We want to walk the weak roots in the nmethod |
1865 // only in the second case. The weak roots in the nmethod | |
1866 // are the oops in the ExceptionCache and the InlineCache | |
1867 // oops. | |
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1868 void nmethod::oops_do(OopClosure* f, bool do_strong_roots_only) { |
0 | 1869 // make sure the oops ready to receive visitors |
1870 assert(!is_zombie() && !is_unloaded(), | |
1871 "should not call follow on zombie or unloaded nmethod"); | |
1872 | |
1873 // If the method is not entrant or zombie then a JMP is plastered over the | |
1874 // first few bytes. If an oop in the old code was there, that oop | |
1875 // should not get GC'd. Skip the first few bytes of oops on | |
1876 // not-entrant methods. | |
1877 address low_boundary = verified_entry_point(); | |
1878 if (is_not_entrant()) { | |
1879 low_boundary += NativeJump::instruction_size; | |
1880 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
1881 // (See comment above.) | |
1882 } | |
1883 | |
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1884 #ifdef GRAAL |
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1885 if (graal_installed_code() != NULL) { |
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1886 f->do_oop((oop*) &_graal_installed_code); |
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1887 } |
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1888 #endif |
0 | 1889 |
1890 RelocIterator iter(this, low_boundary); | |
941 | 1891 |
0 | 1892 while (iter.next()) { |
1893 if (iter.type() == relocInfo::oop_type ) { | |
1894 oop_Relocation* r = iter.oop_reloc(); | |
1895 // In this loop, we must only follow those oops directly embedded in | |
1896 // the code. Other oops (oop_index>0) are seen as part of scopes_oops. | |
941 | 1897 assert(1 == (r->oop_is_immediate()) + |
1898 (r->oop_addr() >= oops_begin() && r->oop_addr() < oops_end()), | |
1899 "oop must be found in exactly one place"); | |
0 | 1900 if (r->oop_is_immediate() && r->oop_value() != NULL) { |
1901 f->do_oop(r->oop_addr()); | |
1902 } | |
1903 } | |
1904 } | |
1905 | |
1906 // Scopes | |
989
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1907 // This includes oop constants not inlined in the code stream. |
0 | 1908 for (oop* p = oops_begin(); p < oops_end(); p++) { |
1909 if (*p == Universe::non_oop_word()) continue; // skip non-oops | |
1910 f->do_oop(p); | |
1911 } | |
1912 } | |
1913 | |
989
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1914 #define NMETHOD_SENTINEL ((nmethod*)badAddress) |
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1915 |
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1916 nmethod* volatile nmethod::_oops_do_mark_nmethods; |
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1917 |
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1918 // An nmethod is "marked" if its _mark_link is set non-null. |
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1919 // Even if it is the end of the linked list, it will have a non-null link value, |
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1920 // as long as it is on the list. |
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1921 // This code must be MP safe, because it is used from parallel GC passes. |
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1922 bool nmethod::test_set_oops_do_mark() { |
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1923 assert(nmethod::oops_do_marking_is_active(), "oops_do_marking_prologue must be called"); |
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1924 nmethod* observed_mark_link = _oops_do_mark_link; |
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1925 if (observed_mark_link == NULL) { |
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1926 // Claim this nmethod for this thread to mark. |
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1927 observed_mark_link = (nmethod*) |
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1928 Atomic::cmpxchg_ptr(NMETHOD_SENTINEL, &_oops_do_mark_link, NULL); |
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1929 if (observed_mark_link == NULL) { |
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1930 |
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1931 // Atomically append this nmethod (now claimed) to the head of the list: |
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1932 nmethod* observed_mark_nmethods = _oops_do_mark_nmethods; |
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1933 for (;;) { |
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1934 nmethod* required_mark_nmethods = observed_mark_nmethods; |
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1935 _oops_do_mark_link = required_mark_nmethods; |
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1936 observed_mark_nmethods = (nmethod*) |
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1937 Atomic::cmpxchg_ptr(this, &_oops_do_mark_nmethods, required_mark_nmethods); |
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1938 if (observed_mark_nmethods == required_mark_nmethods) |
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1939 break; |
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1940 } |
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1941 // Mark was clear when we first saw this guy. |
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1942 NOT_PRODUCT(if (TraceScavenge) print_on(tty, "oops_do, mark")); |
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1943 return false; |
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1944 } |
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1945 } |
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1946 // On fall through, another racing thread marked this nmethod before we did. |
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1947 return true; |
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1948 } |
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1949 |
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1950 void nmethod::oops_do_marking_prologue() { |
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1951 NOT_PRODUCT(if (TraceScavenge) tty->print_cr("[oops_do_marking_prologue")); |
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1952 assert(_oops_do_mark_nmethods == NULL, "must not call oops_do_marking_prologue twice in a row"); |
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1953 // We use cmpxchg_ptr instead of regular assignment here because the user |
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1954 // may fork a bunch of threads, and we need them all to see the same state. |
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1955 void* observed = Atomic::cmpxchg_ptr(NMETHOD_SENTINEL, &_oops_do_mark_nmethods, NULL); |
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1956 guarantee(observed == NULL, "no races in this sequential code"); |
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1957 } |
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1958 |
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1959 void nmethod::oops_do_marking_epilogue() { |
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1960 assert(_oops_do_mark_nmethods != NULL, "must not call oops_do_marking_epilogue twice in a row"); |
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1961 nmethod* cur = _oops_do_mark_nmethods; |
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1962 while (cur != NMETHOD_SENTINEL) { |
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1963 assert(cur != NULL, "not NULL-terminated"); |
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1964 nmethod* next = cur->_oops_do_mark_link; |
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1965 cur->_oops_do_mark_link = NULL; |
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1966 cur->fix_oop_relocations(); |
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1967 NOT_PRODUCT(if (TraceScavenge) cur->print_on(tty, "oops_do, unmark")); |
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1968 cur = next; |
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1969 } |
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1970 void* required = _oops_do_mark_nmethods; |
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1971 void* observed = Atomic::cmpxchg_ptr(NULL, &_oops_do_mark_nmethods, required); |
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1972 guarantee(observed == required, "no races in this sequential code"); |
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1973 NOT_PRODUCT(if (TraceScavenge) tty->print_cr("oops_do_marking_epilogue]")); |
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1974 } |
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1975 |
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1976 class DetectScavengeRoot: public OopClosure { |
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1977 bool _detected_scavenge_root; |
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1978 public: |
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1979 DetectScavengeRoot() : _detected_scavenge_root(false) |
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1980 { NOT_PRODUCT(_print_nm = NULL); } |
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1981 bool detected_scavenge_root() { return _detected_scavenge_root; } |
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1982 virtual void do_oop(oop* p) { |
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1983 if ((*p) != NULL && (*p)->is_scavengable()) { |
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1984 NOT_PRODUCT(maybe_print(p)); |
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1985 _detected_scavenge_root = true; |
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1986 } |
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1987 } |
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1988 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
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1989 |
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1990 #ifndef PRODUCT |
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1991 nmethod* _print_nm; |
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1992 void maybe_print(oop* p) { |
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1993 if (_print_nm == NULL) return; |
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1994 if (!_detected_scavenge_root) _print_nm->print_on(tty, "new scavenge root"); |
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1995 tty->print_cr(""PTR_FORMAT"[offset=%d] detected scavengable oop "PTR_FORMAT" (found at "PTR_FORMAT")", |
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1996 _print_nm, (int)((intptr_t)p - (intptr_t)_print_nm), |
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1997 (intptr_t)(*p), (intptr_t)p); |
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1998 (*p)->print(); |
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1999 } |
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2000 #endif //PRODUCT |
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2001 }; |
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2002 |
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2003 bool nmethod::detect_scavenge_root_oops() { |
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2004 DetectScavengeRoot detect_scavenge_root; |
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2005 NOT_PRODUCT(if (TraceScavenge) detect_scavenge_root._print_nm = this); |
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2006 oops_do(&detect_scavenge_root); |
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2007 return detect_scavenge_root.detected_scavenge_root(); |
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2008 } |
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2009 |
0 | 2010 // Method that knows how to preserve outgoing arguments at call. This method must be |
2011 // called with a frame corresponding to a Java invoke | |
2012 void nmethod::preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { | |
1692 | 2013 #ifndef SHARK |
0 | 2014 if (!method()->is_native()) { |
2015 SimpleScopeDesc ssd(this, fr.pc()); | |
2142 | 2016 Bytecode_invoke call(ssd.method(), ssd.bci()); |
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2017 // compiled invokedynamic call sites have an implicit receiver at |
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2018 // resolution time, so make sure it gets GC'ed. |
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2019 bool has_receiver = !call.is_invokestatic(); |
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2020 Symbol* signature = call.signature(); |
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2021 fr.oops_compiled_arguments_do(signature, has_receiver, reg_map, f); |
0 | 2022 } |
1692 | 2023 #endif // !SHARK |
0 | 2024 } |
2025 | |
2026 | |
2027 oop nmethod::embeddedOop_at(u_char* p) { | |
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2028 RelocIterator iter(this, p, p + 1); |
0 | 2029 while (iter.next()) |
2030 if (iter.type() == relocInfo::oop_type) { | |
2031 return iter.oop_reloc()->oop_value(); | |
2032 } | |
2033 return NULL; | |
2034 } | |
2035 | |
2036 | |
2037 inline bool includes(void* p, void* from, void* to) { | |
2038 return from <= p && p < to; | |
2039 } | |
2040 | |
2041 | |
2042 void nmethod::copy_scopes_pcs(PcDesc* pcs, int count) { | |
2043 assert(count >= 2, "must be sentinel values, at least"); | |
2044 | |
2045 #ifdef ASSERT | |
2046 // must be sorted and unique; we do a binary search in find_pc_desc() | |
2047 int prev_offset = pcs[0].pc_offset(); | |
2048 assert(prev_offset == PcDesc::lower_offset_limit, | |
2049 "must start with a sentinel"); | |
2050 for (int i = 1; i < count; i++) { | |
2051 int this_offset = pcs[i].pc_offset(); | |
2052 assert(this_offset > prev_offset, "offsets must be sorted"); | |
2053 prev_offset = this_offset; | |
2054 } | |
2055 assert(prev_offset == PcDesc::upper_offset_limit, | |
2056 "must end with a sentinel"); | |
2057 #endif //ASSERT | |
2058 | |
1135
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2059 // Search for MethodHandle invokes and tag the nmethod. |
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2060 for (int i = 0; i < count; i++) { |
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2061 if (pcs[i].is_method_handle_invoke()) { |
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2062 set_has_method_handle_invokes(true); |
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2063 break; |
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2064 } |
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2065 } |
2083
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2066 assert(has_method_handle_invokes() == (_deoptimize_mh_offset != -1), "must have deopt mh handler"); |
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2067 |
0 | 2068 int size = count * sizeof(PcDesc); |
2069 assert(scopes_pcs_size() >= size, "oob"); | |
2070 memcpy(scopes_pcs_begin(), pcs, size); | |
2071 | |
2072 // Adjust the final sentinel downward. | |
2073 PcDesc* last_pc = &scopes_pcs_begin()[count-1]; | |
2074 assert(last_pc->pc_offset() == PcDesc::upper_offset_limit, "sanity"); | |
1748 | 2075 last_pc->set_pc_offset(content_size() + 1); |
0 | 2076 for (; last_pc + 1 < scopes_pcs_end(); last_pc += 1) { |
2077 // Fill any rounding gaps with copies of the last record. | |
2078 last_pc[1] = last_pc[0]; | |
2079 } | |
2080 // The following assert could fail if sizeof(PcDesc) is not | |
2081 // an integral multiple of oopSize (the rounding term). | |
2082 // If it fails, change the logic to always allocate a multiple | |
2083 // of sizeof(PcDesc), and fill unused words with copies of *last_pc. | |
2084 assert(last_pc + 1 == scopes_pcs_end(), "must match exactly"); | |
2085 } | |
2086 | |
2087 void nmethod::copy_scopes_data(u_char* buffer, int size) { | |
2088 assert(scopes_data_size() >= size, "oob"); | |
2089 memcpy(scopes_data_begin(), buffer, size); | |
2090 } | |
2091 | |
2092 | |
2093 #ifdef ASSERT | |
2094 static PcDesc* linear_search(nmethod* nm, int pc_offset, bool approximate) { | |
2095 PcDesc* lower = nm->scopes_pcs_begin(); | |
2096 PcDesc* upper = nm->scopes_pcs_end(); | |
2097 lower += 1; // exclude initial sentinel | |
2098 PcDesc* res = NULL; | |
2099 for (PcDesc* p = lower; p < upper; p++) { | |
2100 NOT_PRODUCT(--nmethod_stats.pc_desc_tests); // don't count this call to match_desc | |
2101 if (match_desc(p, pc_offset, approximate)) { | |
2102 if (res == NULL) | |
2103 res = p; | |
2104 else | |
2105 res = (PcDesc*) badAddress; | |
2106 } | |
2107 } | |
2108 return res; | |
2109 } | |
2110 #endif | |
2111 | |
2112 | |
2113 // Finds a PcDesc with real-pc equal to "pc" | |
2114 PcDesc* nmethod::find_pc_desc_internal(address pc, bool approximate) { | |
1748 | 2115 address base_address = code_begin(); |
0 | 2116 if ((pc < base_address) || |
2117 (pc - base_address) >= (ptrdiff_t) PcDesc::upper_offset_limit) { | |
2118 return NULL; // PC is wildly out of range | |
2119 } | |
2120 int pc_offset = (int) (pc - base_address); | |
2121 | |
2122 // Check the PcDesc cache if it contains the desired PcDesc | |
2123 // (This as an almost 100% hit rate.) | |
2124 PcDesc* res = _pc_desc_cache.find_pc_desc(pc_offset, approximate); | |
2125 if (res != NULL) { | |
2126 assert(res == linear_search(this, pc_offset, approximate), "cache ok"); | |
2127 return res; | |
2128 } | |
2129 | |
2130 // Fallback algorithm: quasi-linear search for the PcDesc | |
2131 // Find the last pc_offset less than the given offset. | |
2132 // The successor must be the required match, if there is a match at all. | |
2133 // (Use a fixed radix to avoid expensive affine pointer arithmetic.) | |
2134 PcDesc* lower = scopes_pcs_begin(); | |
2135 PcDesc* upper = scopes_pcs_end(); | |
2136 upper -= 1; // exclude final sentinel | |
2137 if (lower >= upper) return NULL; // native method; no PcDescs at all | |
2138 | |
2139 #define assert_LU_OK \ | |
2140 /* invariant on lower..upper during the following search: */ \ | |
2141 assert(lower->pc_offset() < pc_offset, "sanity"); \ | |
2142 assert(upper->pc_offset() >= pc_offset, "sanity") | |
2143 assert_LU_OK; | |
2144 | |
2145 // Use the last successful return as a split point. | |
2146 PcDesc* mid = _pc_desc_cache.last_pc_desc(); | |
2147 NOT_PRODUCT(++nmethod_stats.pc_desc_searches); | |
2148 if (mid->pc_offset() < pc_offset) { | |
2149 lower = mid; | |
2150 } else { | |
2151 upper = mid; | |
2152 } | |
2153 | |
2154 // Take giant steps at first (4096, then 256, then 16, then 1) | |
2155 const int LOG2_RADIX = 4 /*smaller steps in debug mode:*/ debug_only(-1); | |
2156 const int RADIX = (1 << LOG2_RADIX); | |
2157 for (int step = (1 << (LOG2_RADIX*3)); step > 1; step >>= LOG2_RADIX) { | |
2158 while ((mid = lower + step) < upper) { | |
2159 assert_LU_OK; | |
2160 NOT_PRODUCT(++nmethod_stats.pc_desc_searches); | |
2161 if (mid->pc_offset() < pc_offset) { | |
2162 lower = mid; | |
2163 } else { | |
2164 upper = mid; | |
2165 break; | |
2166 } | |
2167 } | |
2168 assert_LU_OK; | |
2169 } | |
2170 | |
2171 // Sneak up on the value with a linear search of length ~16. | |
2172 while (true) { | |
2173 assert_LU_OK; | |
2174 mid = lower + 1; | |
2175 NOT_PRODUCT(++nmethod_stats.pc_desc_searches); | |
2176 if (mid->pc_offset() < pc_offset) { | |
2177 lower = mid; | |
2178 } else { | |
2179 upper = mid; | |
2180 break; | |
2181 } | |
2182 } | |
2183 #undef assert_LU_OK | |
2184 | |
2185 if (match_desc(upper, pc_offset, approximate)) { | |
2186 assert(upper == linear_search(this, pc_offset, approximate), "search ok"); | |
2187 _pc_desc_cache.add_pc_desc(upper); | |
2188 return upper; | |
2189 } else { | |
2190 assert(NULL == linear_search(this, pc_offset, approximate), "search ok"); | |
2191 return NULL; | |
2192 } | |
2193 } | |
2194 | |
2195 | |
2196 bool nmethod::check_all_dependencies() { | |
2197 bool found_check = false; | |
2198 // wholesale check of all dependencies | |
2199 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
2200 if (deps.check_dependency() != NULL) { | |
2201 found_check = true; | |
2202 NOT_DEBUG(break); | |
2203 } | |
2204 } | |
2205 return found_check; // tell caller if we found anything | |
2206 } | |
2207 | |
2208 bool nmethod::check_dependency_on(DepChange& changes) { | |
2209 // What has happened: | |
2210 // 1) a new class dependee has been added | |
2211 // 2) dependee and all its super classes have been marked | |
2212 bool found_check = false; // set true if we are upset | |
2213 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
2214 // Evaluate only relevant dependencies. | |
2215 if (deps.spot_check_dependency_at(changes) != NULL) { | |
2216 found_check = true; | |
2217 NOT_DEBUG(break); | |
2218 } | |
2219 } | |
2220 return found_check; | |
2221 } | |
2222 | |
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2223 bool nmethod::is_evol_dependent_on(Klass* dependee) { |
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2224 InstanceKlass *dependee_ik = InstanceKlass::cast(dependee); |
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2225 Array<Method*>* dependee_methods = dependee_ik->methods(); |
0 | 2226 for (Dependencies::DepStream deps(this); deps.next(); ) { |
2227 if (deps.type() == Dependencies::evol_method) { | |
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2228 Method* method = deps.method_argument(0); |
0 | 2229 for (int j = 0; j < dependee_methods->length(); j++) { |
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2230 if (dependee_methods->at(j) == method) { |
0 | 2231 // RC_TRACE macro has an embedded ResourceMark |
2232 RC_TRACE(0x01000000, | |
2233 ("Found evol dependency of nmethod %s.%s(%s) compile_id=%d on method %s.%s(%s)", | |
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2234 _method->method_holder()->external_name(), |
0 | 2235 _method->name()->as_C_string(), |
2236 _method->signature()->as_C_string(), compile_id(), | |
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2237 method->method_holder()->external_name(), |
0 | 2238 method->name()->as_C_string(), |
2239 method->signature()->as_C_string())); | |
2240 if (TraceDependencies || LogCompilation) | |
2241 deps.log_dependency(dependee); | |
2242 return true; | |
2243 } | |
2244 } | |
2245 } | |
2246 } | |
2247 return false; | |
2248 } | |
2249 | |
2250 // Called from mark_for_deoptimization, when dependee is invalidated. | |
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2251 bool nmethod::is_dependent_on_method(Method* dependee) { |
0 | 2252 for (Dependencies::DepStream deps(this); deps.next(); ) { |
2253 if (deps.type() != Dependencies::evol_method) | |
2254 continue; | |
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2255 Method* method = deps.method_argument(0); |
0 | 2256 if (method == dependee) return true; |
2257 } | |
2258 return false; | |
2259 } | |
2260 | |
2261 | |
2262 bool nmethod::is_patchable_at(address instr_addr) { | |
1748 | 2263 assert(insts_contains(instr_addr), "wrong nmethod used"); |
0 | 2264 if (is_zombie()) { |
2265 // a zombie may never be patched | |
2266 return false; | |
2267 } | |
2268 return true; | |
2269 } | |
2270 | |
2271 | |
2272 address nmethod::continuation_for_implicit_exception(address pc) { | |
2273 // Exception happened outside inline-cache check code => we are inside | |
2274 // an active nmethod => use cpc to determine a return address | |
1748 | 2275 int exception_offset = pc - code_begin(); |
0 | 2276 int cont_offset = ImplicitExceptionTable(this).at( exception_offset ); |
2277 #ifdef ASSERT | |
2278 if (cont_offset == 0) { | |
2279 Thread* thread = ThreadLocalStorage::get_thread_slow(); | |
2280 ResetNoHandleMark rnm; // Might be called from LEAF/QUICK ENTRY | |
2281 HandleMark hm(thread); | |
2282 ResourceMark rm(thread); | |
2283 CodeBlob* cb = CodeCache::find_blob(pc); | |
2284 assert(cb != NULL && cb == this, ""); | |
2285 tty->print_cr("implicit exception happened at " INTPTR_FORMAT, pc); | |
2286 print(); | |
2287 method()->print_codes(); | |
2288 print_code(); | |
2289 print_pcs(); | |
2290 } | |
2291 #endif | |
1250 | 2292 if (cont_offset == 0) { |
2293 // Let the normal error handling report the exception | |
2294 return NULL; | |
2295 } | |
1748 | 2296 return code_begin() + cont_offset; |
0 | 2297 } |
2298 | |
2299 | |
2300 | |
2301 void nmethod_init() { | |
2302 // make sure you didn't forget to adjust the filler fields | |
2303 assert(sizeof(nmethod) % oopSize == 0, "nmethod size must be multiple of a word"); | |
2304 } | |
2305 | |
2306 | |
2307 //------------------------------------------------------------------------------------------- | |
2308 | |
2309 | |
2310 // QQQ might we make this work from a frame?? | |
2311 nmethodLocker::nmethodLocker(address pc) { | |
2312 CodeBlob* cb = CodeCache::find_blob(pc); | |
2313 guarantee(cb != NULL && cb->is_nmethod(), "bad pc for a nmethod found"); | |
2314 _nm = (nmethod*)cb; | |
2315 lock_nmethod(_nm); | |
2316 } | |
2317 | |
2342
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2318 // Only JvmtiDeferredEvent::compiled_method_unload_event() |
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2319 // should pass zombie_ok == true. |
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2320 void nmethodLocker::lock_nmethod(nmethod* nm, bool zombie_ok) { |
0 | 2321 if (nm == NULL) return; |
2322 Atomic::inc(&nm->_lock_count); | |
2342
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2323 guarantee(zombie_ok || !nm->is_zombie(), "cannot lock a zombie method"); |
0 | 2324 } |
2325 | |
2326 void nmethodLocker::unlock_nmethod(nmethod* nm) { | |
2327 if (nm == NULL) return; | |
2328 Atomic::dec(&nm->_lock_count); | |
2329 guarantee(nm->_lock_count >= 0, "unmatched nmethod lock/unlock"); | |
2330 } | |
2331 | |
1204 | 2332 |
2333 // ----------------------------------------------------------------------------- | |
2334 // nmethod::get_deopt_original_pc | |
2335 // | |
2336 // Return the original PC for the given PC if: | |
2337 // (a) the given PC belongs to a nmethod and | |
2338 // (b) it is a deopt PC | |
2339 address nmethod::get_deopt_original_pc(const frame* fr) { | |
2340 if (fr->cb() == NULL) return NULL; | |
2341 | |
2342 nmethod* nm = fr->cb()->as_nmethod_or_null(); | |
2343 if (nm != NULL && nm->is_deopt_pc(fr->pc())) | |
2344 return nm->get_original_pc(fr); | |
2345 | |
2346 return NULL; | |
0 | 2347 } |
2348 | |
2349 | |
2350 // ----------------------------------------------------------------------------- | |
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2351 // MethodHandle |
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2352 |
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2353 bool nmethod::is_method_handle_return(address return_pc) { |
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2354 if (!has_method_handle_invokes()) return false; |
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2355 PcDesc* pd = pc_desc_at(return_pc); |
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2356 if (pd == NULL) |
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2357 return false; |
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2358 return pd->is_method_handle_invoke(); |
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2359 } |
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2360 |
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2361 |
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2362 // ----------------------------------------------------------------------------- |
0 | 2363 // Verification |
2364 | |
989
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2365 class VerifyOopsClosure: public OopClosure { |
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2366 nmethod* _nm; |
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2367 bool _ok; |
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2368 public: |
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2369 VerifyOopsClosure(nmethod* nm) : _nm(nm), _ok(true) { } |
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2370 bool ok() { return _ok; } |
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2371 virtual void do_oop(oop* p) { |
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2372 if ((*p) == NULL || (*p)->is_oop()) return; |
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2373 if (_ok) { |
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2374 _nm->print_nmethod(true); |
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2375 _ok = false; |
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2376 } |
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2377 tty->print_cr("*** non-oop "PTR_FORMAT" found at "PTR_FORMAT" (offset %d)", |
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2378 (intptr_t)(*p), (intptr_t)p, (int)((intptr_t)p - (intptr_t)_nm)); |
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2379 } |
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2380 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
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2381 }; |
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2382 |
0 | 2383 void nmethod::verify() { |
2384 | |
2385 // Hmm. OSR methods can be deopted but not marked as zombie or not_entrant | |
2386 // seems odd. | |
2387 | |
2388 if( is_zombie() || is_not_entrant() ) | |
2389 return; | |
2390 | |
2391 // Make sure all the entry points are correctly aligned for patching. | |
2392 NativeJump::check_verified_entry_alignment(entry_point(), verified_entry_point()); | |
2393 | |
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2394 // assert(method()->is_oop(), "must be valid"); |
0 | 2395 |
2396 ResourceMark rm; | |
2397 | |
2398 if (!CodeCache::contains(this)) { | |
1490
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2399 fatal(err_msg("nmethod at " INTPTR_FORMAT " not in zone", this)); |
0 | 2400 } |
2401 | |
2402 if(is_native_method() ) | |
2403 return; | |
2404 | |
2405 nmethod* nm = CodeCache::find_nmethod(verified_entry_point()); | |
2406 if (nm != this) { | |
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2407 fatal(err_msg("findNMethod did not find this nmethod (" INTPTR_FORMAT ")", |
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jcoomes
parents:
1489
diff
changeset
|
2408 this)); |
0 | 2409 } |
2410 | |
2411 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
2412 if (! p->verify(this)) { | |
2413 tty->print_cr("\t\tin nmethod at " INTPTR_FORMAT " (pcs)", this); | |
2414 } | |
2415 } | |
2416 | |
989
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jrose
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931
diff
changeset
|
2417 VerifyOopsClosure voc(this); |
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diff
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|
2418 oops_do(&voc); |
148e5441d916
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diff
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|
2419 assert(voc.ok(), "embedded oops must be OK"); |
148e5441d916
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931
diff
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|
2420 verify_scavenge_root_oops(); |
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diff
changeset
|
2421 |
0 | 2422 verify_scopes(); |
2423 } | |
2424 | |
2425 | |
2426 void nmethod::verify_interrupt_point(address call_site) { | |
2427 // This code does not work in release mode since | |
2428 // owns_lock only is available in debug mode. | |
2429 CompiledIC* ic = NULL; | |
2430 Thread *cur = Thread::current(); | |
2431 if (CompiledIC_lock->owner() == cur || | |
2432 ((cur->is_VM_thread() || cur->is_ConcurrentGC_thread()) && | |
2433 SafepointSynchronize::is_at_safepoint())) { | |
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2434 ic = CompiledIC_at(this, call_site); |
0 | 2435 CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops()); |
2436 } else { | |
2437 MutexLocker ml_verify (CompiledIC_lock); | |
6725
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coleenp
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6266
diff
changeset
|
2438 ic = CompiledIC_at(this, call_site); |
0 | 2439 } |
2440 PcDesc* pd = pc_desc_at(ic->end_of_call()); | |
2441 assert(pd != NULL, "PcDesc must exist"); | |
2442 for (ScopeDesc* sd = new ScopeDesc(this, pd->scope_decode_offset(), | |
3018
5857923e563c
Fixed an issue with frame states in exception dispatch chains (now we are correctly rethrowing the exception immediately at entering the interpreter).
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
2891
diff
changeset
|
2443 pd->obj_decode_offset(), pd->should_reexecute(), pd->rethrow_exception(), |
1253
f70b0d9ab095
6910618: C2: Error: assert(d->is_oop(),"JVM_ArrayCopy: dst not an oop")
kvn
parents:
1250
diff
changeset
|
2444 pd->return_oop()); |
0 | 2445 !sd->is_top(); sd = sd->sender()) { |
2446 sd->verify(); | |
2447 } | |
2448 } | |
2449 | |
2450 void nmethod::verify_scopes() { | |
2451 if( !method() ) return; // Runtime stubs have no scope | |
2452 if (method()->is_native()) return; // Ignore stub methods. | |
2453 // iterate through all interrupt point | |
2454 // and verify the debug information is valid. | |
2455 RelocIterator iter((nmethod*)this); | |
2456 while (iter.next()) { | |
2457 address stub = NULL; | |
2458 switch (iter.type()) { | |
2459 case relocInfo::virtual_call_type: | |
2460 verify_interrupt_point(iter.addr()); | |
2461 break; | |
2462 case relocInfo::opt_virtual_call_type: | |
2463 stub = iter.opt_virtual_call_reloc()->static_stub(); | |
2464 verify_interrupt_point(iter.addr()); | |
2465 break; | |
2466 case relocInfo::static_call_type: | |
2467 stub = iter.static_call_reloc()->static_stub(); | |
2468 //verify_interrupt_point(iter.addr()); | |
2469 break; | |
2470 case relocInfo::runtime_call_type: | |
2471 address destination = iter.reloc()->value(); | |
2472 // Right now there is no way to find out which entries support | |
2473 // an interrupt point. It would be nice if we had this | |
2474 // information in a table. | |
2475 break; | |
2476 } | |
4559
723df37192d6
Make it possible again to build a real client libjvm, drop the UseGraal flag.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
4320
diff
changeset
|
2477 #ifndef GRAAL |
0 | 2478 assert(stub == NULL || stub_contains(stub), "static call stub outside stub section"); |
4559
723df37192d6
Make it possible again to build a real client libjvm, drop the UseGraal flag.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
4320
diff
changeset
|
2479 #endif |
0 | 2480 } |
2481 } | |
2482 | |
2483 | |
2484 // ----------------------------------------------------------------------------- | |
2485 // Non-product code | |
2486 #ifndef PRODUCT | |
2487 | |
989
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jrose
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931
diff
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|
2488 class DebugScavengeRoot: public OopClosure { |
148e5441d916
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jrose
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931
diff
changeset
|
2489 nmethod* _nm; |
148e5441d916
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jrose
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diff
changeset
|
2490 bool _ok; |
148e5441d916
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jrose
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diff
changeset
|
2491 public: |
148e5441d916
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diff
changeset
|
2492 DebugScavengeRoot(nmethod* nm) : _nm(nm), _ok(true) { } |
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jrose
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931
diff
changeset
|
2493 bool ok() { return _ok; } |
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jrose
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931
diff
changeset
|
2494 virtual void do_oop(oop* p) { |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
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931
diff
changeset
|
2495 if ((*p) == NULL || !(*p)->is_scavengable()) return; |
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jrose
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931
diff
changeset
|
2496 if (_ok) { |
148e5441d916
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jrose
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931
diff
changeset
|
2497 _nm->print_nmethod(true); |
148e5441d916
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jrose
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931
diff
changeset
|
2498 _ok = false; |
148e5441d916
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jrose
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931
diff
changeset
|
2499 } |
3377
2aa9ddbb9e60
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
2405
diff
changeset
|
2500 tty->print_cr("*** scavengable oop "PTR_FORMAT" found at "PTR_FORMAT" (offset %d)", |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2501 (intptr_t)(*p), (intptr_t)p, (int)((intptr_t)p - (intptr_t)_nm)); |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2502 (*p)->print(); |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2503 } |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2504 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2505 }; |
0 | 2506 |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2507 void nmethod::verify_scavenge_root_oops() { |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
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931
diff
changeset
|
2508 if (!on_scavenge_root_list()) { |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
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931
diff
changeset
|
2509 // Actually look inside, to verify the claim that it's clean. |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
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931
diff
changeset
|
2510 DebugScavengeRoot debug_scavenge_root(this); |
148e5441d916
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931
diff
changeset
|
2511 oops_do(&debug_scavenge_root); |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
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931
diff
changeset
|
2512 if (!debug_scavenge_root.ok()) |
3377
2aa9ddbb9e60
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
2405
diff
changeset
|
2513 fatal("found an unadvertised bad scavengable oop in the code cache"); |
0 | 2514 } |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
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931
diff
changeset
|
2515 assert(scavenge_root_not_marked(), ""); |
0 | 2516 } |
2517 | |
100
c7c777385a15
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jrose
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30
diff
changeset
|
2518 #endif // PRODUCT |
0 | 2519 |
2520 // Printing operations | |
2521 | |
2522 void nmethod::print() const { | |
2523 ResourceMark rm; | |
2524 ttyLocker ttyl; // keep the following output all in one block | |
2525 | |
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2376
diff
changeset
|
2526 tty->print("Compiled method "); |
0 | 2527 |
2528 if (is_compiled_by_c1()) { | |
2529 tty->print("(c1) "); | |
2530 } else if (is_compiled_by_c2()) { | |
2531 tty->print("(c2) "); | |
1692 | 2532 } else if (is_compiled_by_shark()) { |
2533 tty->print("(shark) "); | |
0 | 2534 } else { |
2535 tty->print("(nm) "); | |
2536 } | |
2537 | |
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2376
diff
changeset
|
2538 print_on(tty, NULL); |
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2376
diff
changeset
|
2539 |
0 | 2540 if (WizardMode) { |
2541 tty->print("((nmethod*) "INTPTR_FORMAT ") ", this); | |
2542 tty->print(" for method " INTPTR_FORMAT , (address)method()); | |
2543 tty->print(" { "); | |
2544 if (is_in_use()) tty->print("in_use "); | |
2545 if (is_not_entrant()) tty->print("not_entrant "); | |
2546 if (is_zombie()) tty->print("zombie "); | |
2547 if (is_unloaded()) tty->print("unloaded "); | |
989
148e5441d916
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jrose
parents:
931
diff
changeset
|
2548 if (on_scavenge_root_list()) tty->print("scavenge_root "); |
0 | 2549 tty->print_cr("}:"); |
2550 } | |
2551 if (size () > 0) tty->print_cr(" total in heap [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2552 (address)this, | |
2553 (address)this + size(), | |
2554 size()); | |
2555 if (relocation_size () > 0) tty->print_cr(" relocation [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2556 relocation_begin(), | |
2557 relocation_end(), | |
2558 relocation_size()); | |
1762
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
2559 if (consts_size () > 0) tty->print_cr(" constants [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
2560 consts_begin(), |
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
2561 consts_end(), |
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
2562 consts_size()); |
1748 | 2563 if (insts_size () > 0) tty->print_cr(" main code [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
2564 insts_begin(), | |
2565 insts_end(), | |
2566 insts_size()); | |
0 | 2567 if (stub_size () > 0) tty->print_cr(" stub code [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
2568 stub_begin(), | |
2569 stub_end(), | |
2570 stub_size()); | |
1563
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
1538
diff
changeset
|
2571 if (oops_size () > 0) tty->print_cr(" oops [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
1538
diff
changeset
|
2572 oops_begin(), |
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
1538
diff
changeset
|
2573 oops_end(), |
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
1538
diff
changeset
|
2574 oops_size()); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2575 if (metadata_size () > 0) tty->print_cr(" metadata [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2576 metadata_begin(), |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2577 metadata_end(), |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2578 metadata_size()); |
0 | 2579 if (scopes_data_size () > 0) tty->print_cr(" scopes data [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
2580 scopes_data_begin(), | |
2581 scopes_data_end(), | |
2582 scopes_data_size()); | |
2583 if (scopes_pcs_size () > 0) tty->print_cr(" scopes pcs [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2584 scopes_pcs_begin(), | |
2585 scopes_pcs_end(), | |
2586 scopes_pcs_size()); | |
2587 if (dependencies_size () > 0) tty->print_cr(" dependencies [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2588 dependencies_begin(), | |
2589 dependencies_end(), | |
2590 dependencies_size()); | |
2591 if (handler_table_size() > 0) tty->print_cr(" handler table [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2592 handler_table_begin(), | |
2593 handler_table_end(), | |
2594 handler_table_size()); | |
2595 if (nul_chk_table_size() > 0) tty->print_cr(" nul chk table [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2596 nul_chk_table_begin(), | |
2597 nul_chk_table_end(), | |
2598 nul_chk_table_size()); | |
2599 } | |
2600 | |
100
c7c777385a15
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30
diff
changeset
|
2601 void nmethod::print_code() { |
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
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30
diff
changeset
|
2602 HandleMark hm; |
c7c777385a15
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jrose
parents:
30
diff
changeset
|
2603 ResourceMark m; |
c7c777385a15
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jrose
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30
diff
changeset
|
2604 Disassembler::decode(this); |
c7c777385a15
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jrose
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30
diff
changeset
|
2605 } |
c7c777385a15
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jrose
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diff
changeset
|
2606 |
c7c777385a15
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diff
changeset
|
2607 |
c7c777385a15
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30
diff
changeset
|
2608 #ifndef PRODUCT |
0 | 2609 |
2610 void nmethod::print_scopes() { | |
2611 // Find the first pc desc for all scopes in the code and print it. | |
2612 ResourceMark rm; | |
2613 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
2614 if (p->scope_decode_offset() == DebugInformationRecorder::serialized_null) | |
2615 continue; | |
2616 | |
2617 ScopeDesc* sd = scope_desc_at(p->real_pc(this)); | |
2618 sd->print_on(tty, p); | |
2619 } | |
2620 } | |
2621 | |
2622 void nmethod::print_dependencies() { | |
2623 ResourceMark rm; | |
2624 ttyLocker ttyl; // keep the following output all in one block | |
2625 tty->print_cr("Dependencies:"); | |
2626 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
2627 deps.print_dependency(); | |
6725
da91efe96a93
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coleenp
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6266
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|
2628 Klass* ctxk = deps.context_type(); |
0 | 2629 if (ctxk != NULL) { |
2630 Klass* k = Klass::cast(ctxk); | |
6725
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|
2631 if (k->oop_is_instance() && ((InstanceKlass*)k)->is_dependent_nmethod(this)) { |
30 | 2632 tty->print_cr(" [nmethod<=klass]%s", k->external_name()); |
0 | 2633 } |
2634 } | |
2635 deps.log_dependency(); // put it into the xml log also | |
2636 } | |
2637 } | |
2638 | |
2639 | |
2640 void nmethod::print_relocations() { | |
2641 ResourceMark m; // in case methods get printed via the debugger | |
2642 tty->print_cr("relocations:"); | |
2643 RelocIterator iter(this); | |
2644 iter.print(); | |
2645 if (UseRelocIndex) { | |
2646 jint* index_end = (jint*)relocation_end() - 1; | |
2647 jint index_size = *index_end; | |
2648 jint* index_start = (jint*)( (address)index_end - index_size ); | |
2649 tty->print_cr(" index @" INTPTR_FORMAT ": index_size=%d", index_start, index_size); | |
2650 if (index_size > 0) { | |
2651 jint* ip; | |
2652 for (ip = index_start; ip+2 <= index_end; ip += 2) | |
2653 tty->print_cr(" (%d %d) addr=" INTPTR_FORMAT " @" INTPTR_FORMAT, | |
2654 ip[0], | |
2655 ip[1], | |
2656 header_end()+ip[0], | |
2657 relocation_begin()-1+ip[1]); | |
2658 for (; ip < index_end; ip++) | |
2659 tty->print_cr(" (%d ?)", ip[0]); | |
2660 tty->print_cr(" @" INTPTR_FORMAT ": index_size=%d", ip, *ip++); | |
2661 tty->print_cr("reloc_end @" INTPTR_FORMAT ":", ip); | |
2662 } | |
2663 } | |
2664 } | |
2665 | |
2666 | |
2667 void nmethod::print_pcs() { | |
2668 ResourceMark m; // in case methods get printed via debugger | |
2669 tty->print_cr("pc-bytecode offsets:"); | |
2670 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
2671 p->print(this); | |
2672 } | |
2673 } | |
2674 | |
100
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|
2675 #endif // PRODUCT |
0 | 2676 |
2677 const char* nmethod::reloc_string_for(u_char* begin, u_char* end) { | |
2678 RelocIterator iter(this, begin, end); | |
2679 bool have_one = false; | |
2680 while (iter.next()) { | |
2681 have_one = true; | |
2682 switch (iter.type()) { | |
2683 case relocInfo::none: return "no_reloc"; | |
2684 case relocInfo::oop_type: { | |
2685 stringStream st; | |
2686 oop_Relocation* r = iter.oop_reloc(); | |
2687 oop obj = r->oop_value(); | |
2688 st.print("oop("); | |
2689 if (obj == NULL) st.print("NULL"); | |
2690 else obj->print_value_on(&st); | |
2691 st.print(")"); | |
2692 return st.as_string(); | |
2693 } | |
6725
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6266
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|
2694 case relocInfo::metadata_type: { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2695 stringStream st; |
da91efe96a93
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6266
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changeset
|
2696 metadata_Relocation* r = iter.metadata_reloc(); |
da91efe96a93
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6266
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changeset
|
2697 Metadata* obj = r->metadata_value(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2698 st.print("metadata("); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2699 if (obj == NULL) st.print("NULL"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2700 else obj->print_value_on(&st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2701 st.print(")"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2702 return st.as_string(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2703 } |
0 | 2704 case relocInfo::virtual_call_type: return "virtual_call"; |
2705 case relocInfo::opt_virtual_call_type: return "optimized virtual_call"; | |
2706 case relocInfo::static_call_type: return "static_call"; | |
2707 case relocInfo::static_stub_type: return "static_stub"; | |
2708 case relocInfo::runtime_call_type: return "runtime_call"; | |
2709 case relocInfo::external_word_type: return "external_word"; | |
2710 case relocInfo::internal_word_type: return "internal_word"; | |
2711 case relocInfo::section_word_type: return "section_word"; | |
2712 case relocInfo::poll_type: return "poll"; | |
2713 case relocInfo::poll_return_type: return "poll_return"; | |
2714 case relocInfo::type_mask: return "type_bit_mask"; | |
2715 } | |
2716 } | |
2717 return have_one ? "other" : NULL; | |
2718 } | |
2719 | |
2720 // Return a the last scope in (begin..end] | |
2721 ScopeDesc* nmethod::scope_desc_in(address begin, address end) { | |
2722 PcDesc* p = pc_desc_near(begin+1); | |
2723 if (p != NULL && p->real_pc(this) <= end) { | |
2724 return new ScopeDesc(this, p->scope_decode_offset(), | |
3018
5857923e563c
Fixed an issue with frame states in exception dispatch chains (now we are correctly rethrowing the exception immediately at entering the interpreter).
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
2891
diff
changeset
|
2725 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
|
2726 p->return_oop()); |
0 | 2727 } |
2728 return NULL; | |
2729 } | |
2730 | |
6796
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
parents:
6792
diff
changeset
|
2731 void nmethod::print_nmethod_labels(outputStream* stream, address block_begin) const { |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2732 if (block_begin == entry_point()) stream->print_cr("[Entry Point]"); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2733 if (block_begin == verified_entry_point()) stream->print_cr("[Verified Entry Point]"); |
5798
2585af1e26ac
implemented non-XIR lowering of invokes (todo: inline virtual dispatch and null checking of receivers)
Doug Simon <doug.simon@oracle.com>
parents:
5251
diff
changeset
|
2734 if (GRAAL_ONLY(_exception_offset >= 0 &&) block_begin == exception_begin()) stream->print_cr("[Exception Handler]"); |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2735 if (block_begin == stub_begin()) stream->print_cr("[Stub Code]"); |
5798
2585af1e26ac
implemented non-XIR lowering of invokes (todo: inline virtual dispatch and null checking of receivers)
Doug Simon <doug.simon@oracle.com>
parents:
5251
diff
changeset
|
2736 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
|
2737 |
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
twisti
parents:
1644
diff
changeset
|
2738 if (has_method_handle_invokes()) |
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
twisti
parents:
1644
diff
changeset
|
2739 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
|
2740 |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2741 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
|
2742 |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2743 if (block_begin == entry_point()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2744 methodHandle m = method(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2745 if (m.not_null()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2746 stream->print(" # "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2747 m->print_value_on(stream); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2748 stream->cr(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2749 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2750 if (m.not_null() && !is_osr_method()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2751 ResourceMark rm; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2752 int sizeargs = m->size_of_parameters(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2753 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
|
2754 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, sizeargs); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2755 { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2756 int sig_index = 0; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2757 if (!m->is_static()) |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2758 sig_bt[sig_index++] = T_OBJECT; // 'this' |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2759 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
|
2760 BasicType t = ss.type(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2761 sig_bt[sig_index++] = t; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2762 if (type2size[t] == 2) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2763 sig_bt[sig_index++] = T_VOID; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2764 } else { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2765 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
|
2766 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2767 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2768 assert(sig_index == sizeargs, ""); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2769 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2770 const char* spname = "sp"; // make arch-specific? |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2771 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
|
2772 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
|
2773 int tab1 = 14, tab2 = 24; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2774 int sig_index = 0; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2775 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
|
2776 bool did_old_sp = false; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2777 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
|
2778 bool at_this = (arg_index == -1); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2779 bool at_old_sp = false; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2780 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
|
2781 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
|
2782 if (at_this) |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2783 stream->print(" # this: "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2784 else |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2785 stream->print(" # parm%d: ", arg_index); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2786 stream->move_to(tab1); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2787 VMReg fst = regs[sig_index].first(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2788 VMReg snd = regs[sig_index].second(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2789 if (fst->is_reg()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2790 stream->print("%s", fst->name()); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2791 if (snd->is_valid()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2792 stream->print(":%s", snd->name()); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2793 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2794 } else if (fst->is_stack()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2795 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
|
2796 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
|
2797 stream->print("[%s+0x%x]", spname, offset); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2798 } else { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2799 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
|
2800 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2801 stream->print(" "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2802 stream->move_to(tab2); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2803 stream->print("= "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2804 if (at_this) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2805 m->method_holder()->print_value_on(stream); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2806 } else { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2807 bool did_name = false; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2808 if (!at_this && ss.is_object()) { |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2142
diff
changeset
|
2809 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
|
2810 if (name != NULL) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2811 name->print_value_on(stream); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2812 did_name = true; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2813 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2814 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2815 if (!did_name) |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2816 stream->print("%s", type2name(t)); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2817 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2818 if (at_old_sp) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2819 stream->print(" (%s of caller)", spname); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2820 did_old_sp = true; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2821 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2822 stream->cr(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2823 sig_index += type2size[t]; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2824 arg_index += 1; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2825 if (!at_this) ss.next(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2826 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2827 if (!did_old_sp) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2828 stream->print(" # "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2829 stream->move_to(tab1); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2830 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
|
2831 stream->print(" (%s of caller)", spname); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2832 stream->cr(); |
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 } |
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 |
0 | 2838 void nmethod::print_code_comment_on(outputStream* st, int column, u_char* begin, u_char* end) { |
2839 // First, find an oopmap in (begin, end]. | |
2840 // We use the odd half-closed interval so that oop maps and scope descs | |
2841 // which are tied to the byte after a call are printed with the call itself. | |
1748 | 2842 address base = code_begin(); |
0 | 2843 OopMapSet* oms = oop_maps(); |
2844 if (oms != NULL) { | |
2845 for (int i = 0, imax = oms->size(); i < imax; i++) { | |
2846 OopMap* om = oms->at(i); | |
2847 address pc = base + om->offset(); | |
2848 if (pc > begin) { | |
2849 if (pc <= end) { | |
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2850 st->move_to(column); |
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2851 st->print("; "); |
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2852 om->print_on(st); |
0 | 2853 } |
2854 break; | |
2855 } | |
2856 } | |
2857 } | |
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2858 |
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2859 // Print any debug info present at this pc. |
0 | 2860 ScopeDesc* sd = scope_desc_in(begin, end); |
2861 if (sd != NULL) { | |
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2862 st->move_to(column); |
0 | 2863 if (sd->bci() == SynchronizationEntryBCI) { |
2864 st->print(";*synchronization entry"); | |
2865 } else { | |
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2866 if (sd->method() == NULL) { |
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2867 st->print("method is NULL"); |
0 | 2868 } else if (sd->method()->is_native()) { |
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2869 st->print("method is native"); |
0 | 2870 } else { |
2142 | 2871 Bytecodes::Code bc = sd->method()->java_code_at(sd->bci()); |
0 | 2872 st->print(";*%s", Bytecodes::name(bc)); |
2873 switch (bc) { | |
2874 case Bytecodes::_invokevirtual: | |
2875 case Bytecodes::_invokespecial: | |
2876 case Bytecodes::_invokestatic: | |
2877 case Bytecodes::_invokeinterface: | |
2878 { | |
2142 | 2879 Bytecode_invoke invoke(sd->method(), sd->bci()); |
0 | 2880 st->print(" "); |
2142 | 2881 if (invoke.name() != NULL) |
2882 invoke.name()->print_symbol_on(st); | |
0 | 2883 else |
2884 st->print("<UNKNOWN>"); | |
2885 break; | |
2886 } | |
2887 case Bytecodes::_getfield: | |
2888 case Bytecodes::_putfield: | |
2889 case Bytecodes::_getstatic: | |
2890 case Bytecodes::_putstatic: | |
2891 { | |
2142 | 2892 Bytecode_field field(sd->method(), sd->bci()); |
0 | 2893 st->print(" "); |
2142 | 2894 if (field.name() != NULL) |
2895 field.name()->print_symbol_on(st); | |
0 | 2896 else |
2897 st->print("<UNKNOWN>"); | |
2898 } | |
2899 } | |
2900 } | |
2901 } | |
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2902 |
0 | 2903 // Print all scopes |
2904 for (;sd != NULL; sd = sd->sender()) { | |
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2905 st->move_to(column); |
0 | 2906 st->print("; -"); |
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2907 if (sd->method() == NULL) { |
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2908 st->print("method is NULL"); |
0 | 2909 } else { |
2910 sd->method()->print_short_name(st); | |
2911 } | |
2912 int lineno = sd->method()->line_number_from_bci(sd->bci()); | |
2913 if (lineno != -1) { | |
2914 st->print("@%d (line %d)", sd->bci(), lineno); | |
2915 } else { | |
2916 st->print("@%d", sd->bci()); | |
2917 } | |
2918 st->cr(); | |
2919 } | |
2920 } | |
2921 | |
2922 // Print relocation information | |
2923 const char* str = reloc_string_for(begin, end); | |
2924 if (str != NULL) { | |
2925 if (sd != NULL) st->cr(); | |
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2926 st->move_to(column); |
0 | 2927 st->print("; {%s}", str); |
2928 } | |
1748 | 2929 int cont_offset = ImplicitExceptionTable(this).at(begin - code_begin()); |
0 | 2930 if (cont_offset != 0) { |
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2931 st->move_to(column); |
1748 | 2932 st->print("; implicit exception: dispatches to " INTPTR_FORMAT, code_begin() + cont_offset); |
0 | 2933 } |
2934 | |
2935 } | |
2936 | |
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2937 #ifndef PRODUCT |
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2938 |
0 | 2939 void nmethod::print_value_on(outputStream* st) const { |
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2940 st->print("nmethod"); |
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2941 print_on(st, NULL); |
0 | 2942 } |
2943 | |
2944 void nmethod::print_calls(outputStream* st) { | |
2945 RelocIterator iter(this); | |
2946 while (iter.next()) { | |
2947 switch (iter.type()) { | |
2948 case relocInfo::virtual_call_type: | |
2949 case relocInfo::opt_virtual_call_type: { | |
2950 VerifyMutexLocker mc(CompiledIC_lock); | |
2951 CompiledIC_at(iter.reloc())->print(); | |
2952 break; | |
2953 } | |
2954 case relocInfo::static_call_type: | |
2955 st->print_cr("Static call at " INTPTR_FORMAT, iter.reloc()->addr()); | |
2956 compiledStaticCall_at(iter.reloc())->print(); | |
2957 break; | |
2958 } | |
2959 } | |
2960 } | |
2961 | |
2962 void nmethod::print_handler_table() { | |
2963 ExceptionHandlerTable(this).print(); | |
2964 } | |
2965 | |
2966 void nmethod::print_nul_chk_table() { | |
1748 | 2967 ImplicitExceptionTable(this).print(code_begin()); |
0 | 2968 } |
2969 | |
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2970 #endif // PRODUCT |
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2971 |
0 | 2972 void nmethod::print_statistics() { |
2973 ttyLocker ttyl; | |
2974 if (xtty != NULL) xtty->head("statistics type='nmethod'"); | |
2975 nmethod_stats.print_native_nmethod_stats(); | |
2976 nmethod_stats.print_nmethod_stats(); | |
2977 DebugInformationRecorder::print_statistics(); | |
2978 nmethod_stats.print_pc_stats(); | |
2979 Dependencies::print_statistics(); | |
2980 if (xtty != NULL) xtty->tail("statistics"); | |
2981 } |