Mercurial > hg > truffle
annotate src/share/vm/code/nmethod.cpp @ 18041:52b4284cb496
Merge with jdk8u20-b26
author | Gilles Duboscq <duboscq@ssw.jku.at> |
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date | Wed, 15 Oct 2014 16:02:50 +0200 |
parents | ded2f1abfcda 78bbf4d43a14 |
children | 2a69cbe850a8 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "code/codeCache.hpp" | |
27 #include "code/compiledIC.hpp" | |
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28 #include "code/dependencies.hpp" |
1972 | 29 #include "code/nmethod.hpp" |
30 #include "code/scopeDesc.hpp" | |
31 #include "compiler/abstractCompiler.hpp" | |
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32 #include "compiler/compileBroker.hpp" |
1972 | 33 #include "compiler/compileLog.hpp" |
34 #include "compiler/compilerOracle.hpp" | |
35 #include "compiler/disassembler.hpp" | |
36 #include "interpreter/bytecode.hpp" | |
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37 #include "oops/methodData.hpp" |
1972 | 38 #include "prims/jvmtiRedefineClassesTrace.hpp" |
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39 #include "prims/jvmtiImpl.hpp" |
1972 | 40 #include "runtime/sharedRuntime.hpp" |
41 #include "runtime/sweeper.hpp" | |
42 #include "utilities/dtrace.hpp" | |
43 #include "utilities/events.hpp" | |
44 #include "utilities/xmlstream.hpp" | |
45 #ifdef SHARK | |
46 #include "shark/sharkCompiler.hpp" | |
47 #endif | |
9707 | 48 #ifdef GRAAL |
49 #include "graal/graalJavaAccess.hpp" | |
50 #endif | |
0 | 51 |
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52 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
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53 |
0 | 54 #ifdef DTRACE_ENABLED |
55 | |
56 // Only bother with this argument setup if dtrace is available | |
57 | |
4006 | 58 #ifndef USDT2 |
0 | 59 HS_DTRACE_PROBE_DECL8(hotspot, compiled__method__load, |
60 const char*, int, const char*, int, const char*, int, void*, size_t); | |
61 | |
62 HS_DTRACE_PROBE_DECL6(hotspot, compiled__method__unload, | |
63 char*, int, char*, int, char*, int); | |
64 | |
65 #define DTRACE_METHOD_UNLOAD_PROBE(method) \ | |
66 { \ | |
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67 Method* m = (method); \ |
0 | 68 if (m != NULL) { \ |
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69 Symbol* klass_name = m->klass_name(); \ |
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70 Symbol* name = m->name(); \ |
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71 Symbol* signature = m->signature(); \ |
0 | 72 HS_DTRACE_PROBE6(hotspot, compiled__method__unload, \ |
73 klass_name->bytes(), klass_name->utf8_length(), \ | |
74 name->bytes(), name->utf8_length(), \ | |
75 signature->bytes(), signature->utf8_length()); \ | |
76 } \ | |
77 } | |
4006 | 78 #else /* USDT2 */ |
79 #define DTRACE_METHOD_UNLOAD_PROBE(method) \ | |
80 { \ | |
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81 Method* m = (method); \ |
4006 | 82 if (m != NULL) { \ |
83 Symbol* klass_name = m->klass_name(); \ | |
84 Symbol* name = m->name(); \ | |
85 Symbol* signature = m->signature(); \ | |
86 HOTSPOT_COMPILED_METHOD_UNLOAD( \ | |
87 (char *) klass_name->bytes(), klass_name->utf8_length(), \ | |
88 (char *) name->bytes(), name->utf8_length(), \ | |
89 (char *) signature->bytes(), signature->utf8_length()); \ | |
90 } \ | |
91 } | |
92 #endif /* USDT2 */ | |
0 | 93 |
94 #else // ndef DTRACE_ENABLED | |
95 | |
96 #define DTRACE_METHOD_UNLOAD_PROBE(method) | |
97 | |
98 #endif | |
99 | |
100 bool nmethod::is_compiled_by_c1() const { | |
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101 if (compiler() == NULL) { |
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102 return false; |
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103 } |
0 | 104 return compiler()->is_c1(); |
105 } | |
9707 | 106 bool nmethod::is_compiled_by_graal() const { |
107 if (compiler() == NULL || method() == NULL) return false; // can happen during debug printing | |
108 if (is_native_method()) return false; | |
109 return compiler()->is_graal(); | |
110 } | |
0 | 111 bool nmethod::is_compiled_by_c2() const { |
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112 if (compiler() == NULL) { |
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113 return false; |
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114 } |
0 | 115 return compiler()->is_c2(); |
116 } | |
1692 | 117 bool nmethod::is_compiled_by_shark() const { |
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118 if (compiler() == NULL) { |
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119 return false; |
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120 } |
1692 | 121 return compiler()->is_shark(); |
122 } | |
0 | 123 |
124 | |
125 | |
126 //--------------------------------------------------------------------------------- | |
127 // NMethod statistics | |
128 // They are printed under various flags, including: | |
129 // PrintC1Statistics, PrintOptoStatistics, LogVMOutput, and LogCompilation. | |
130 // (In the latter two cases, they like other stats are printed to the log only.) | |
131 | |
132 // These variables are put into one block to reduce relocations | |
133 // and make it simpler to print from the debugger. | |
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134 struct java_nmethod_stats_struct { |
0 | 135 int nmethod_count; |
136 int total_size; | |
137 int relocation_size; | |
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138 int consts_size; |
1748 | 139 int insts_size; |
0 | 140 int stub_size; |
141 int scopes_data_size; | |
142 int scopes_pcs_size; | |
143 int dependencies_size; | |
144 int handler_table_size; | |
145 int nul_chk_table_size; | |
146 int oops_size; | |
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147 int metadata_size; |
0 | 148 |
149 void note_nmethod(nmethod* nm) { | |
150 nmethod_count += 1; | |
151 total_size += nm->size(); | |
152 relocation_size += nm->relocation_size(); | |
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153 consts_size += nm->consts_size(); |
1748 | 154 insts_size += nm->insts_size(); |
0 | 155 stub_size += nm->stub_size(); |
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156 oops_size += nm->oops_size(); |
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157 metadata_size += nm->metadata_size(); |
0 | 158 scopes_data_size += nm->scopes_data_size(); |
159 scopes_pcs_size += nm->scopes_pcs_size(); | |
160 dependencies_size += nm->dependencies_size(); | |
161 handler_table_size += nm->handler_table_size(); | |
162 nul_chk_table_size += nm->nul_chk_table_size(); | |
163 } | |
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164 void print_nmethod_stats(const char* name) { |
0 | 165 if (nmethod_count == 0) return; |
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166 tty->print_cr("Statistics for %d bytecoded nmethods for %s:", nmethod_count, name); |
0 | 167 if (total_size != 0) tty->print_cr(" total in heap = %d", total_size); |
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168 if (nmethod_count != 0) tty->print_cr(" header = %d", nmethod_count * sizeof(nmethod)); |
0 | 169 if (relocation_size != 0) tty->print_cr(" relocation = %d", relocation_size); |
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170 if (consts_size != 0) tty->print_cr(" constants = %d", consts_size); |
1748 | 171 if (insts_size != 0) tty->print_cr(" main code = %d", insts_size); |
0 | 172 if (stub_size != 0) tty->print_cr(" stub code = %d", stub_size); |
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173 if (oops_size != 0) tty->print_cr(" oops = %d", oops_size); |
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174 if (metadata_size != 0) tty->print_cr(" metadata = %d", metadata_size); |
0 | 175 if (scopes_data_size != 0) tty->print_cr(" scopes data = %d", scopes_data_size); |
176 if (scopes_pcs_size != 0) tty->print_cr(" scopes pcs = %d", scopes_pcs_size); | |
177 if (dependencies_size != 0) tty->print_cr(" dependencies = %d", dependencies_size); | |
178 if (handler_table_size != 0) tty->print_cr(" handler table = %d", handler_table_size); | |
179 if (nul_chk_table_size != 0) tty->print_cr(" nul chk table = %d", nul_chk_table_size); | |
180 } | |
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181 }; |
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182 |
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183 struct native_nmethod_stats_struct { |
0 | 184 int native_nmethod_count; |
185 int native_total_size; | |
186 int native_relocation_size; | |
1748 | 187 int native_insts_size; |
0 | 188 int native_oops_size; |
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189 int native_metadata_size; |
0 | 190 void note_native_nmethod(nmethod* nm) { |
191 native_nmethod_count += 1; | |
192 native_total_size += nm->size(); | |
193 native_relocation_size += nm->relocation_size(); | |
1748 | 194 native_insts_size += nm->insts_size(); |
0 | 195 native_oops_size += nm->oops_size(); |
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196 native_metadata_size += nm->metadata_size(); |
0 | 197 } |
198 void print_native_nmethod_stats() { | |
199 if (native_nmethod_count == 0) return; | |
200 tty->print_cr("Statistics for %d native nmethods:", native_nmethod_count); | |
201 if (native_total_size != 0) tty->print_cr(" N. total size = %d", native_total_size); | |
202 if (native_relocation_size != 0) tty->print_cr(" N. relocation = %d", native_relocation_size); | |
1748 | 203 if (native_insts_size != 0) tty->print_cr(" N. main code = %d", native_insts_size); |
0 | 204 if (native_oops_size != 0) tty->print_cr(" N. oops = %d", native_oops_size); |
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205 if (native_metadata_size != 0) tty->print_cr(" N. metadata = %d", native_metadata_size); |
0 | 206 } |
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207 }; |
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208 |
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209 struct pc_nmethod_stats_struct { |
0 | 210 int pc_desc_resets; // number of resets (= number of caches) |
211 int pc_desc_queries; // queries to nmethod::find_pc_desc | |
212 int pc_desc_approx; // number of those which have approximate true | |
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213 int pc_desc_repeats; // number of _pc_descs[0] hits |
0 | 214 int pc_desc_hits; // number of LRU cache hits |
215 int pc_desc_tests; // total number of PcDesc examinations | |
216 int pc_desc_searches; // total number of quasi-binary search steps | |
217 int pc_desc_adds; // number of LUR cache insertions | |
218 | |
219 void print_pc_stats() { | |
220 tty->print_cr("PcDesc Statistics: %d queries, %.2f comparisons per query", | |
221 pc_desc_queries, | |
222 (double)(pc_desc_tests + pc_desc_searches) | |
223 / pc_desc_queries); | |
224 tty->print_cr(" caches=%d queries=%d/%d, hits=%d+%d, tests=%d+%d, adds=%d", | |
225 pc_desc_resets, | |
226 pc_desc_queries, pc_desc_approx, | |
227 pc_desc_repeats, pc_desc_hits, | |
228 pc_desc_tests, pc_desc_searches, pc_desc_adds); | |
229 } | |
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230 }; |
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231 |
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232 #ifdef COMPILER1 |
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233 static java_nmethod_stats_struct c1_java_nmethod_stats; |
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234 #endif |
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235 #ifdef COMPILER2 |
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236 static java_nmethod_stats_struct c2_java_nmethod_stats; |
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237 #endif |
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238 #ifdef GRAAL |
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239 static java_nmethod_stats_struct graal_java_nmethod_stats; |
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240 #endif |
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241 #ifdef SHARK |
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242 static java_nmethod_stats_struct shark_java_nmethod_stats; |
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243 #endif |
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244 static java_nmethod_stats_struct unknown_java_nmethod_stats; |
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245 |
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246 static native_nmethod_stats_struct native_nmethod_stats; |
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247 static pc_nmethod_stats_struct pc_nmethod_stats; |
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248 |
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249 static void note_native_wrapper_nmethod(nmethod* nm) { |
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250 native_nmethod_stats.note_native_nmethod(nm); |
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251 } |
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252 |
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253 static void note_java_nmethod(nmethod* nm) { |
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254 #ifdef COMPILER1 |
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255 if (nm->is_compiled_by_c1()) { |
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256 c1_java_nmethod_stats.note_nmethod(nm); |
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257 } else |
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258 #endif |
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259 #ifdef COMPILER2 |
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260 if (nm->is_compiled_by_c2()) { |
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261 c2_java_nmethod_stats.note_nmethod(nm); |
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262 } else |
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263 #endif |
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264 #ifdef GRAAL |
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265 if (nm->is_compiled_by_graal()) { |
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266 graal_java_nmethod_stats.note_nmethod(nm); |
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267 } else |
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268 #endif |
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269 #ifdef SHARK |
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270 if (nm->is_compiled_by_shark()) { |
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271 shark_java_nmethod_stats.note_nmethod(nm); |
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272 } else |
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273 #endif |
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274 { |
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275 unknown_java_nmethod_stats.note_nmethod(nm); |
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276 } |
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277 } |
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278 |
0 | 279 //--------------------------------------------------------------------------------- |
280 | |
281 | |
282 ExceptionCache::ExceptionCache(Handle exception, address pc, address handler) { | |
283 assert(pc != NULL, "Must be non null"); | |
284 assert(exception.not_null(), "Must be non null"); | |
285 assert(handler != NULL, "Must be non null"); | |
286 | |
287 _count = 0; | |
288 _exception_type = exception->klass(); | |
289 _next = NULL; | |
290 | |
291 add_address_and_handler(pc,handler); | |
292 } | |
293 | |
294 | |
295 address ExceptionCache::match(Handle exception, address pc) { | |
296 assert(pc != NULL,"Must be non null"); | |
297 assert(exception.not_null(),"Must be non null"); | |
298 if (exception->klass() == exception_type()) { | |
299 return (test_address(pc)); | |
300 } | |
301 | |
302 return NULL; | |
303 } | |
304 | |
305 | |
306 bool ExceptionCache::match_exception_with_space(Handle exception) { | |
307 assert(exception.not_null(),"Must be non null"); | |
308 if (exception->klass() == exception_type() && count() < cache_size) { | |
309 return true; | |
310 } | |
311 return false; | |
312 } | |
313 | |
314 | |
315 address ExceptionCache::test_address(address addr) { | |
316 for (int i=0; i<count(); i++) { | |
317 if (pc_at(i) == addr) { | |
318 return handler_at(i); | |
319 } | |
320 } | |
321 return NULL; | |
322 } | |
323 | |
324 | |
325 bool ExceptionCache::add_address_and_handler(address addr, address handler) { | |
326 if (test_address(addr) == handler) return true; | |
327 if (count() < cache_size) { | |
328 set_pc_at(count(),addr); | |
329 set_handler_at(count(), handler); | |
330 increment_count(); | |
331 return true; | |
332 } | |
333 return false; | |
334 } | |
335 | |
336 | |
337 // private method for handling exception cache | |
338 // These methods are private, and used to manipulate the exception cache | |
339 // directly. | |
340 ExceptionCache* nmethod::exception_cache_entry_for_exception(Handle exception) { | |
341 ExceptionCache* ec = exception_cache(); | |
342 while (ec != NULL) { | |
343 if (ec->match_exception_with_space(exception)) { | |
344 return ec; | |
345 } | |
346 ec = ec->next(); | |
347 } | |
348 return NULL; | |
349 } | |
350 | |
351 | |
352 //----------------------------------------------------------------------------- | |
353 | |
354 | |
355 // Helper used by both find_pc_desc methods. | |
356 static inline bool match_desc(PcDesc* pc, int pc_offset, bool approximate) { | |
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357 NOT_PRODUCT(++pc_nmethod_stats.pc_desc_tests); |
0 | 358 if (!approximate) |
359 return pc->pc_offset() == pc_offset; | |
360 else | |
361 return (pc-1)->pc_offset() < pc_offset && pc_offset <= pc->pc_offset(); | |
362 } | |
363 | |
364 void PcDescCache::reset_to(PcDesc* initial_pc_desc) { | |
365 if (initial_pc_desc == NULL) { | |
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366 _pc_descs[0] = NULL; // native method; no PcDescs at all |
0 | 367 return; |
368 } | |
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369 NOT_PRODUCT(++pc_nmethod_stats.pc_desc_resets); |
0 | 370 // reset the cache by filling it with benign (non-null) values |
371 assert(initial_pc_desc->pc_offset() < 0, "must be sentinel"); | |
372 for (int i = 0; i < cache_size; i++) | |
373 _pc_descs[i] = initial_pc_desc; | |
374 } | |
375 | |
376 PcDesc* PcDescCache::find_pc_desc(int pc_offset, bool approximate) { | |
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377 NOT_PRODUCT(++pc_nmethod_stats.pc_desc_queries); |
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378 NOT_PRODUCT(if (approximate) ++pc_nmethod_stats.pc_desc_approx); |
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379 |
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380 // Note: one might think that caching the most recently |
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381 // read value separately would be a win, but one would be |
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382 // wrong. When many threads are updating it, the cache |
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383 // line it's in would bounce between caches, negating |
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384 // any benefit. |
0 | 385 |
386 // In order to prevent race conditions do not load cache elements | |
387 // repeatedly, but use a local copy: | |
388 PcDesc* res; | |
389 | |
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390 // Step one: Check the most recently added value. |
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391 res = _pc_descs[0]; |
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392 if (res == NULL) return NULL; // native method; no PcDescs at all |
0 | 393 if (match_desc(res, pc_offset, approximate)) { |
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394 NOT_PRODUCT(++pc_nmethod_stats.pc_desc_repeats); |
0 | 395 return res; |
396 } | |
397 | |
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398 // Step two: Check the rest of the LRU cache. |
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399 for (int i = 1; i < cache_size; ++i) { |
0 | 400 res = _pc_descs[i]; |
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401 if (res->pc_offset() < 0) break; // optimization: skip empty cache |
0 | 402 if (match_desc(res, pc_offset, approximate)) { |
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403 NOT_PRODUCT(++pc_nmethod_stats.pc_desc_hits); |
0 | 404 return res; |
405 } | |
406 } | |
407 | |
408 // Report failure. | |
409 return NULL; | |
410 } | |
411 | |
412 void PcDescCache::add_pc_desc(PcDesc* pc_desc) { | |
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413 NOT_PRODUCT(++pc_nmethod_stats.pc_desc_adds); |
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414 // Update the LRU cache by shifting pc_desc forward. |
0 | 415 for (int i = 0; i < cache_size; i++) { |
416 PcDesc* next = _pc_descs[i]; | |
417 _pc_descs[i] = pc_desc; | |
418 pc_desc = next; | |
419 } | |
420 } | |
421 | |
422 // adjust pcs_size so that it is a multiple of both oopSize and | |
423 // sizeof(PcDesc) (assumes that if sizeof(PcDesc) is not a multiple | |
424 // of oopSize, then 2*sizeof(PcDesc) is) | |
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425 static int adjust_pcs_size(int pcs_size) { |
0 | 426 int nsize = round_to(pcs_size, oopSize); |
427 if ((nsize % sizeof(PcDesc)) != 0) { | |
428 nsize = pcs_size + sizeof(PcDesc); | |
429 } | |
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430 assert((nsize % oopSize) == 0, "correct alignment"); |
0 | 431 return nsize; |
432 } | |
433 | |
434 //----------------------------------------------------------------------------- | |
435 | |
436 | |
437 void nmethod::add_exception_cache_entry(ExceptionCache* new_entry) { | |
438 assert(ExceptionCache_lock->owned_by_self(),"Must hold the ExceptionCache_lock"); | |
439 assert(new_entry != NULL,"Must be non null"); | |
440 assert(new_entry->next() == NULL, "Must be null"); | |
441 | |
442 if (exception_cache() != NULL) { | |
443 new_entry->set_next(exception_cache()); | |
444 } | |
445 set_exception_cache(new_entry); | |
446 } | |
447 | |
448 void nmethod::remove_from_exception_cache(ExceptionCache* ec) { | |
449 ExceptionCache* prev = NULL; | |
450 ExceptionCache* curr = exception_cache(); | |
451 assert(curr != NULL, "nothing to remove"); | |
452 // find the previous and next entry of ec | |
453 while (curr != ec) { | |
454 prev = curr; | |
455 curr = curr->next(); | |
456 assert(curr != NULL, "ExceptionCache not found"); | |
457 } | |
458 // now: curr == ec | |
459 ExceptionCache* next = curr->next(); | |
460 if (prev == NULL) { | |
461 set_exception_cache(next); | |
462 } else { | |
463 prev->set_next(next); | |
464 } | |
465 delete curr; | |
466 } | |
467 | |
468 | |
469 // public method for accessing the exception cache | |
470 // These are the public access methods. | |
471 address nmethod::handler_for_exception_and_pc(Handle exception, address pc) { | |
472 // We never grab a lock to read the exception cache, so we may | |
473 // have false negatives. This is okay, as it can only happen during | |
474 // the first few exception lookups for a given nmethod. | |
475 ExceptionCache* ec = exception_cache(); | |
476 while (ec != NULL) { | |
477 address ret_val; | |
478 if ((ret_val = ec->match(exception,pc)) != NULL) { | |
479 return ret_val; | |
480 } | |
481 ec = ec->next(); | |
482 } | |
483 return NULL; | |
484 } | |
485 | |
486 | |
487 void nmethod::add_handler_for_exception_and_pc(Handle exception, address pc, address handler) { | |
488 // There are potential race conditions during exception cache updates, so we | |
489 // must own the ExceptionCache_lock before doing ANY modifications. Because | |
605 | 490 // we don't lock during reads, it is possible to have several threads attempt |
0 | 491 // to update the cache with the same data. We need to check for already inserted |
492 // copies of the current data before adding it. | |
493 | |
494 MutexLocker ml(ExceptionCache_lock); | |
495 ExceptionCache* target_entry = exception_cache_entry_for_exception(exception); | |
496 | |
497 if (target_entry == NULL || !target_entry->add_address_and_handler(pc,handler)) { | |
498 target_entry = new ExceptionCache(exception,pc,handler); | |
499 add_exception_cache_entry(target_entry); | |
500 } | |
501 } | |
502 | |
503 | |
504 //-------------end of code for ExceptionCache-------------- | |
505 | |
506 | |
507 int nmethod::total_size() const { | |
508 return | |
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509 consts_size() + |
1748 | 510 insts_size() + |
0 | 511 stub_size() + |
512 scopes_data_size() + | |
513 scopes_pcs_size() + | |
514 handler_table_size() + | |
515 nul_chk_table_size(); | |
516 } | |
517 | |
518 const char* nmethod::compile_kind() const { | |
519 if (is_osr_method()) return "osr"; | |
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520 if (method() != NULL && is_native_method()) return "c2n"; |
0 | 521 return NULL; |
522 } | |
523 | |
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524 // Fill in default values for various flag fields |
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525 void nmethod::init_defaults() { |
13441 | 526 _state = in_use; |
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527 _marked_for_reclamation = 0; |
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528 _has_flushed_dependencies = 0; |
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529 _has_unsafe_access = 0; |
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530 _has_method_handle_invokes = 0; |
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531 _lazy_critical_native = 0; |
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532 _has_wide_vectors = 0; |
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533 _marked_for_deoptimization = 0; |
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534 _lock_count = 0; |
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535 _stack_traversal_mark = 0; |
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536 _unload_reported = false; // jvmti state |
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537 |
1726 | 538 #ifdef ASSERT |
539 _oops_are_stale = false; | |
540 #endif | |
541 | |
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542 _oops_do_mark_link = NULL; |
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543 _jmethod_id = NULL; |
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544 _osr_link = NULL; |
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545 _scavenge_root_link = NULL; |
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546 _scavenge_root_state = 0; |
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547 _compiler = NULL; |
17780 | 548 #if INCLUDE_RTM_OPT |
549 _rtm_state = NoRTM; | |
550 #endif | |
9707 | 551 #ifdef GRAAL |
552 _graal_installed_code = NULL; | |
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553 _speculation_log = NULL; |
9707 | 554 #endif |
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555 #ifdef HAVE_DTRACE_H |
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556 _trap_offset = 0; |
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557 #endif // def HAVE_DTRACE_H |
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558 } |
0 | 559 |
560 nmethod* nmethod::new_native_nmethod(methodHandle method, | |
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561 int compile_id, |
0 | 562 CodeBuffer *code_buffer, |
563 int vep_offset, | |
564 int frame_complete, | |
565 int frame_size, | |
566 ByteSize basic_lock_owner_sp_offset, | |
567 ByteSize basic_lock_sp_offset, | |
568 OopMapSet* oop_maps) { | |
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569 code_buffer->finalize_oop_references(method); |
0 | 570 // create nmethod |
571 nmethod* nm = NULL; | |
572 { | |
573 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
574 int native_nmethod_size = allocation_size(code_buffer, sizeof(nmethod)); | |
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575 CodeOffsets offsets; |
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576 offsets.set_value(CodeOffsets::Verified_Entry, vep_offset); |
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577 offsets.set_value(CodeOffsets::Frame_Complete, frame_complete); |
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578 nm = new (native_nmethod_size) nmethod(method(), native_nmethod_size, |
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579 compile_id, &offsets, |
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580 code_buffer, frame_size, |
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581 basic_lock_owner_sp_offset, |
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582 basic_lock_sp_offset, oop_maps); |
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583 if (nm != NULL) note_native_wrapper_nmethod(nm); |
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584 if (PrintAssembly && nm != NULL) { |
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585 Disassembler::decode(nm); |
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586 } |
0 | 587 } |
588 // verify nmethod | |
589 debug_only(if (nm) nm->verify();) // might block | |
590 | |
591 if (nm != NULL) { | |
592 nm->log_new_nmethod(); | |
593 } | |
594 | |
595 return nm; | |
596 } | |
597 | |
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598 #ifdef HAVE_DTRACE_H |
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599 nmethod* nmethod::new_dtrace_nmethod(methodHandle method, |
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600 CodeBuffer *code_buffer, |
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601 int vep_offset, |
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602 int trap_offset, |
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603 int frame_complete, |
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604 int frame_size) { |
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605 code_buffer->finalize_oop_references(method); |
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606 // create nmethod |
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607 nmethod* nm = NULL; |
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608 { |
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609 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
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610 int nmethod_size = allocation_size(code_buffer, sizeof(nmethod)); |
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611 CodeOffsets offsets; |
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612 offsets.set_value(CodeOffsets::Verified_Entry, vep_offset); |
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613 offsets.set_value(CodeOffsets::Dtrace_trap, trap_offset); |
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614 offsets.set_value(CodeOffsets::Frame_Complete, frame_complete); |
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615 |
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616 nm = new (nmethod_size) nmethod(method(), nmethod_size, |
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617 &offsets, code_buffer, frame_size); |
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618 |
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619 if (nm != NULL) note_java_nmethod(nm); |
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620 if (PrintAssembly && nm != NULL) { |
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621 Disassembler::decode(nm); |
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622 } |
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623 } |
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624 // verify nmethod |
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625 debug_only(if (nm) nm->verify();) // might block |
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626 |
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627 if (nm != NULL) { |
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628 nm->log_new_nmethod(); |
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629 } |
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630 |
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631 return nm; |
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632 } |
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633 |
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634 #endif // def HAVE_DTRACE_H |
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635 |
0 | 636 nmethod* nmethod::new_nmethod(methodHandle method, |
637 int compile_id, | |
638 int entry_bci, | |
639 CodeOffsets* offsets, | |
640 int orig_pc_offset, | |
641 DebugInformationRecorder* debug_info, | |
642 Dependencies* dependencies, | |
643 CodeBuffer* code_buffer, int frame_size, | |
644 OopMapSet* oop_maps, | |
645 ExceptionHandlerTable* handler_table, | |
646 ImplicitExceptionTable* nul_chk_table, | |
647 AbstractCompiler* compiler, | |
648 int comp_level | |
9707 | 649 #ifdef GRAAL |
650 , Handle installed_code, | |
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651 Handle speculationLog |
9707 | 652 #endif |
0 | 653 ) |
654 { | |
655 assert(debug_info->oop_recorder() == code_buffer->oop_recorder(), "shared OR"); | |
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656 code_buffer->finalize_oop_references(method); |
0 | 657 // create nmethod |
658 nmethod* nm = NULL; | |
659 { MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
660 int nmethod_size = | |
661 allocation_size(code_buffer, sizeof(nmethod)) | |
662 + adjust_pcs_size(debug_info->pcs_size()) | |
663 + round_to(dependencies->size_in_bytes() , oopSize) | |
664 + round_to(handler_table->size_in_bytes(), oopSize) | |
665 + round_to(nul_chk_table->size_in_bytes(), oopSize) | |
666 + round_to(debug_info->data_size() , oopSize); | |
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667 nm = new (nmethod_size) |
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668 nmethod(method(), nmethod_size, compile_id, entry_bci, offsets, |
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669 orig_pc_offset, debug_info, dependencies, code_buffer, frame_size, |
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670 oop_maps, |
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671 handler_table, |
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672 nul_chk_table, |
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673 compiler, |
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674 comp_level |
9707 | 675 #ifdef GRAAL |
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676 , installed_code, |
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677 speculationLog |
9707 | 678 #endif |
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679 ); |
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680 |
0 | 681 if (nm != NULL) { |
682 // To make dependency checking during class loading fast, record | |
683 // the nmethod dependencies in the classes it is dependent on. | |
684 // This allows the dependency checking code to simply walk the | |
685 // class hierarchy above the loaded class, checking only nmethods | |
686 // which are dependent on those classes. The slow way is to | |
687 // check every nmethod for dependencies which makes it linear in | |
688 // the number of methods compiled. For applications with a lot | |
689 // classes the slow way is too slow. | |
690 for (Dependencies::DepStream deps(nm); deps.next(); ) { | |
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691 Klass* klass = deps.context_type(); |
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692 if (klass == NULL) { |
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693 continue; // ignore things like evol_method |
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694 } |
0 | 695 |
696 // record this nmethod as dependent on this klass | |
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697 InstanceKlass::cast(klass)->add_dependent_nmethod(nm); |
0 | 698 } |
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699 if (nm != NULL) note_java_nmethod(nm); |
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700 if (PrintAssembly || CompilerOracle::has_option_string(method, "PrintAssembly")) { |
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701 Disassembler::decode(nm); |
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702 } |
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703 } |
0 | 704 } |
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705 // Do verification and logging outside CodeCache_lock. |
0 | 706 if (nm != NULL) { |
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707 // Safepoints in nmethod::verify aren't allowed because nm hasn't been installed yet. |
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708 DEBUG_ONLY(nm->verify();) |
0 | 709 nm->log_new_nmethod(); |
710 } | |
711 return nm; | |
712 } | |
713 | |
714 | |
715 // For native wrappers | |
716 nmethod::nmethod( | |
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717 Method* method, |
0 | 718 int nmethod_size, |
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719 int compile_id, |
0 | 720 CodeOffsets* offsets, |
721 CodeBuffer* code_buffer, | |
722 int frame_size, | |
723 ByteSize basic_lock_owner_sp_offset, | |
724 ByteSize basic_lock_sp_offset, | |
725 OopMapSet* oop_maps ) | |
726 : CodeBlob("native nmethod", code_buffer, sizeof(nmethod), | |
727 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, oop_maps), | |
2019 | 728 _native_receiver_sp_offset(basic_lock_owner_sp_offset), |
729 _native_basic_lock_sp_offset(basic_lock_sp_offset) | |
0 | 730 { |
731 { | |
732 debug_only(No_Safepoint_Verifier nsv;) | |
733 assert_locked_or_safepoint(CodeCache_lock); | |
734 | |
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735 init_defaults(); |
0 | 736 _method = method; |
737 _entry_bci = InvocationEntryBci; | |
738 // We have no exception handler or deopt handler make the | |
739 // values something that will never match a pc like the nmethod vtable entry | |
740 _exception_offset = 0; | |
741 _deoptimize_offset = 0; | |
1204 | 742 _deoptimize_mh_offset = 0; |
0 | 743 _orig_pc_offset = 0; |
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744 |
1748 | 745 _consts_offset = data_offset(); |
0 | 746 _stub_offset = data_offset(); |
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747 _oops_offset = data_offset(); |
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748 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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749 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
0 | 750 _scopes_pcs_offset = _scopes_data_offset; |
751 _dependencies_offset = _scopes_pcs_offset; | |
752 _handler_table_offset = _dependencies_offset; | |
753 _nul_chk_table_offset = _handler_table_offset; | |
754 _nmethod_end_offset = _nul_chk_table_offset; | |
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755 _compile_id = compile_id; |
0 | 756 _comp_level = CompLevel_none; |
1748 | 757 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
758 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
0 | 759 _osr_entry_point = NULL; |
760 _exception_cache = NULL; | |
761 _pc_desc_cache.reset_to(NULL); | |
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762 _hotness_counter = NMethodSweeper::hotness_counter_reset_val(); |
0 | 763 |
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764 code_buffer->copy_values_to(this); |
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765 if (ScavengeRootsInCode && detect_scavenge_root_oops()) { |
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766 CodeCache::add_scavenge_root_nmethod(this); |
12080 | 767 Universe::heap()->register_nmethod(this); |
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768 } |
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769 debug_only(verify_scavenge_root_oops()); |
0 | 770 CodeCache::commit(this); |
771 } | |
772 | |
773 if (PrintNativeNMethods || PrintDebugInfo || PrintRelocations || PrintDependencies) { | |
774 ttyLocker ttyl; // keep the following output all in one block | |
775 // This output goes directly to the tty, not the compiler log. | |
776 // To enable tools to match it up with the compilation activity, | |
777 // be sure to tag this tty output with the compile ID. | |
778 if (xtty != NULL) { | |
779 xtty->begin_head("print_native_nmethod"); | |
780 xtty->method(_method); | |
781 xtty->stamp(); | |
782 xtty->end_head(" address='" INTPTR_FORMAT "'", (intptr_t) this); | |
783 } | |
784 // print the header part first | |
785 print(); | |
786 // then print the requested information | |
787 if (PrintNativeNMethods) { | |
788 print_code(); | |
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789 if (oop_maps != NULL) { |
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790 oop_maps->print(); |
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791 } |
0 | 792 } |
793 if (PrintRelocations) { | |
794 print_relocations(); | |
795 } | |
796 if (xtty != NULL) { | |
797 xtty->tail("print_native_nmethod"); | |
798 } | |
799 } | |
800 } | |
801 | |
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802 // For dtrace wrappers |
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803 #ifdef HAVE_DTRACE_H |
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804 nmethod::nmethod( |
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805 Method* method, |
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806 int nmethod_size, |
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807 CodeOffsets* offsets, |
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808 CodeBuffer* code_buffer, |
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809 int frame_size) |
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810 : CodeBlob("dtrace nmethod", code_buffer, sizeof(nmethod), |
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811 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, NULL), |
2019 | 812 _native_receiver_sp_offset(in_ByteSize(-1)), |
813 _native_basic_lock_sp_offset(in_ByteSize(-1)) | |
116
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814 { |
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815 { |
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816 debug_only(No_Safepoint_Verifier nsv;) |
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817 assert_locked_or_safepoint(CodeCache_lock); |
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818 |
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819 init_defaults(); |
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820 _method = method; |
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821 _entry_bci = InvocationEntryBci; |
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822 // We have no exception handler or deopt handler make the |
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823 // values something that will never match a pc like the nmethod vtable entry |
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824 _exception_offset = 0; |
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825 _deoptimize_offset = 0; |
1204 | 826 _deoptimize_mh_offset = 0; |
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827 _unwind_handler_offset = -1; |
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828 _trap_offset = offsets->value(CodeOffsets::Dtrace_trap); |
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829 _orig_pc_offset = 0; |
1748 | 830 _consts_offset = data_offset(); |
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831 _stub_offset = data_offset(); |
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832 _oops_offset = data_offset(); |
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833 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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834 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
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835 _scopes_pcs_offset = _scopes_data_offset; |
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836 _dependencies_offset = _scopes_pcs_offset; |
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837 _handler_table_offset = _dependencies_offset; |
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838 _nul_chk_table_offset = _handler_table_offset; |
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839 _nmethod_end_offset = _nul_chk_table_offset; |
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840 _compile_id = 0; // default |
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841 _comp_level = CompLevel_none; |
1748 | 842 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
843 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
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844 _osr_entry_point = NULL; |
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845 _exception_cache = NULL; |
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846 _pc_desc_cache.reset_to(NULL); |
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847 _hotness_counter = NMethodSweeper::hotness_counter_reset_val(); |
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848 |
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849 code_buffer->copy_values_to(this); |
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850 if (ScavengeRootsInCode && detect_scavenge_root_oops()) { |
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851 CodeCache::add_scavenge_root_nmethod(this); |
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852 Universe::heap()->register_nmethod(this); |
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853 } |
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854 DEBUG_ONLY(verify_scavenge_root_oops();) |
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855 CodeCache::commit(this); |
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856 } |
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857 |
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858 if (PrintNMethods || PrintDebugInfo || PrintRelocations || PrintDependencies) { |
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859 ttyLocker ttyl; // keep the following output all in one block |
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860 // This output goes directly to the tty, not the compiler log. |
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861 // To enable tools to match it up with the compilation activity, |
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862 // be sure to tag this tty output with the compile ID. |
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863 if (xtty != NULL) { |
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864 xtty->begin_head("print_dtrace_nmethod"); |
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865 xtty->method(_method); |
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866 xtty->stamp(); |
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867 xtty->end_head(" address='" INTPTR_FORMAT "'", (intptr_t) this); |
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868 } |
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869 // print the header part first |
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870 print(); |
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871 // then print the requested information |
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872 if (PrintNMethods) { |
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873 print_code(); |
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874 } |
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875 if (PrintRelocations) { |
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876 print_relocations(); |
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877 } |
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878 if (xtty != NULL) { |
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879 xtty->tail("print_dtrace_nmethod"); |
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880 } |
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881 } |
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882 } |
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883 #endif // def HAVE_DTRACE_H |
0 | 884 |
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885 void* nmethod::operator new(size_t size, int nmethod_size) throw() { |
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886 // Not critical, may return null if there is too little continuous memory |
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887 return CodeCache::allocate(nmethod_size); |
0 | 888 } |
889 | |
890 nmethod::nmethod( | |
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891 Method* method, |
0 | 892 int nmethod_size, |
893 int compile_id, | |
894 int entry_bci, | |
895 CodeOffsets* offsets, | |
896 int orig_pc_offset, | |
897 DebugInformationRecorder* debug_info, | |
898 Dependencies* dependencies, | |
899 CodeBuffer *code_buffer, | |
900 int frame_size, | |
901 OopMapSet* oop_maps, | |
902 ExceptionHandlerTable* handler_table, | |
903 ImplicitExceptionTable* nul_chk_table, | |
904 AbstractCompiler* compiler, | |
905 int comp_level | |
9707 | 906 #ifdef GRAAL |
907 , Handle installed_code, | |
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908 Handle speculation_log |
9707 | 909 #endif |
0 | 910 ) |
911 : CodeBlob("nmethod", code_buffer, sizeof(nmethod), | |
912 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, oop_maps), | |
2019 | 913 _native_receiver_sp_offset(in_ByteSize(-1)), |
914 _native_basic_lock_sp_offset(in_ByteSize(-1)) | |
0 | 915 { |
916 assert(debug_info->oop_recorder() == code_buffer->oop_recorder(), "shared OR"); | |
917 { | |
918 debug_only(No_Safepoint_Verifier nsv;) | |
919 assert_locked_or_safepoint(CodeCache_lock); | |
920 | |
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921 init_defaults(); |
0 | 922 _method = method; |
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923 _entry_bci = entry_bci; |
0 | 924 _compile_id = compile_id; |
925 _comp_level = comp_level; | |
926 _compiler = compiler; | |
927 _orig_pc_offset = orig_pc_offset; | |
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928 _hotness_counter = NMethodSweeper::hotness_counter_reset_val(); |
1748 | 929 |
930 // Section offsets | |
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931 _consts_offset = content_offset() + code_buffer->total_offset_of(code_buffer->consts()); |
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932 _stub_offset = content_offset() + code_buffer->total_offset_of(code_buffer->stubs()); |
0 | 933 |
9707 | 934 #ifdef GRAAL |
935 _graal_installed_code = installed_code(); | |
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936 _speculation_log = (instanceOop)speculation_log(); |
9707 | 937 #endif |
938 if (compiler->is_graal()) { | |
939 // Graal might not produce any stub sections | |
940 if (offsets->value(CodeOffsets::Exceptions) != -1) { | |
941 _exception_offset = code_offset() + offsets->value(CodeOffsets::Exceptions); | |
942 } else { | |
943 _exception_offset = -1; | |
944 } | |
945 if (offsets->value(CodeOffsets::Deopt) != -1) { | |
946 _deoptimize_offset = code_offset() + offsets->value(CodeOffsets::Deopt); | |
947 } else { | |
948 _deoptimize_offset = -1; | |
949 } | |
950 if (offsets->value(CodeOffsets::DeoptMH) != -1) { | |
951 _deoptimize_mh_offset = code_offset() + offsets->value(CodeOffsets::DeoptMH); | |
952 } else { | |
953 _deoptimize_mh_offset = -1; | |
954 } | |
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955 } else { |
9707 | 956 // Exception handler and deopt handler are in the stub section |
957 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must be set"); | |
958 assert(offsets->value(CodeOffsets::Deopt ) != -1, "must be set"); | |
959 | |
960 _exception_offset = _stub_offset + offsets->value(CodeOffsets::Exceptions); | |
961 _deoptimize_offset = _stub_offset + offsets->value(CodeOffsets::Deopt); | |
962 if (offsets->value(CodeOffsets::DeoptMH) != -1) { | |
963 _deoptimize_mh_offset = _stub_offset + offsets->value(CodeOffsets::DeoptMH); | |
964 } else { | |
965 _deoptimize_mh_offset = -1; | |
966 } | |
1762
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967 } |
1378
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968 if (offsets->value(CodeOffsets::UnwindHandler) != -1) { |
1748 | 969 _unwind_handler_offset = code_offset() + offsets->value(CodeOffsets::UnwindHandler); |
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970 } else { |
1748 | 971 _unwind_handler_offset = -1; |
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972 } |
1748 | 973 |
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974 _oops_offset = data_offset(); |
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975 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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976 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
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977 |
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978 _scopes_pcs_offset = _scopes_data_offset + round_to(debug_info->data_size (), oopSize); |
0 | 979 _dependencies_offset = _scopes_pcs_offset + adjust_pcs_size(debug_info->pcs_size()); |
980 _handler_table_offset = _dependencies_offset + round_to(dependencies->size_in_bytes (), oopSize); | |
981 _nul_chk_table_offset = _handler_table_offset + round_to(handler_table->size_in_bytes(), oopSize); | |
982 _nmethod_end_offset = _nul_chk_table_offset + round_to(nul_chk_table->size_in_bytes(), oopSize); | |
983 | |
1748 | 984 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
985 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
986 _osr_entry_point = code_begin() + offsets->value(CodeOffsets::OSR_Entry); | |
0 | 987 _exception_cache = NULL; |
988 _pc_desc_cache.reset_to(scopes_pcs_begin()); | |
989 | |
990 // Copy contents of ScopeDescRecorder to nmethod | |
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991 code_buffer->copy_values_to(this); |
0 | 992 debug_info->copy_to(this); |
993 dependencies->copy_to(this); | |
989
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994 if (ScavengeRootsInCode && detect_scavenge_root_oops()) { |
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995 CodeCache::add_scavenge_root_nmethod(this); |
12080 | 996 Universe::heap()->register_nmethod(this); |
989
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997 } |
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998 debug_only(verify_scavenge_root_oops()); |
0 | 999 |
1000 CodeCache::commit(this); | |
1001 | |
1002 // Copy contents of ExceptionHandlerTable to nmethod | |
1003 handler_table->copy_to(this); | |
1004 nul_chk_table->copy_to(this); | |
1005 | |
1006 // we use the information of entry points to find out if a method is | |
1007 // static or non static | |
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1008 assert(compiler->is_c2() || compiler->is_graal() || |
0 | 1009 _method->is_static() == (entry_point() == _verified_entry_point), |
1010 " entry points must be same for static methods and vice versa"); | |
1011 } | |
1012 | |
100
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1013 bool printnmethods = PrintNMethods |
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1014 || CompilerOracle::should_print(_method) |
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1015 || CompilerOracle::has_option_string(_method, "PrintNMethods"); |
0 | 1016 if (printnmethods || PrintDebugInfo || PrintRelocations || PrintDependencies || PrintExceptionHandlers) { |
1017 print_nmethod(printnmethods); | |
1018 } | |
1019 } | |
1020 | |
1021 | |
1022 // Print a short set of xml attributes to identify this nmethod. The | |
1023 // output should be embedded in some other element. | |
1024 void nmethod::log_identity(xmlStream* log) const { | |
1025 log->print(" compile_id='%d'", compile_id()); | |
1026 const char* nm_kind = compile_kind(); | |
1027 if (nm_kind != NULL) log->print(" compile_kind='%s'", nm_kind); | |
1028 if (compiler() != NULL) { | |
1029 log->print(" compiler='%s'", compiler()->name()); | |
1030 } | |
1783 | 1031 if (TieredCompilation) { |
1032 log->print(" level='%d'", comp_level()); | |
1033 } | |
0 | 1034 } |
1035 | |
1036 | |
1037 #define LOG_OFFSET(log, name) \ | |
1038 if ((intptr_t)name##_end() - (intptr_t)name##_begin()) \ | |
1039 log->print(" " XSTR(name) "_offset='%d'" , \ | |
1040 (intptr_t)name##_begin() - (intptr_t)this) | |
1041 | |
1042 | |
1043 void nmethod::log_new_nmethod() const { | |
1044 if (LogCompilation && xtty != NULL) { | |
1045 ttyLocker ttyl; | |
1046 HandleMark hm; | |
1047 xtty->begin_elem("nmethod"); | |
1048 log_identity(xtty); | |
1748 | 1049 xtty->print(" entry='" INTPTR_FORMAT "' size='%d'", code_begin(), size()); |
0 | 1050 xtty->print(" address='" INTPTR_FORMAT "'", (intptr_t) this); |
1051 | |
1052 LOG_OFFSET(xtty, relocation); | |
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1053 LOG_OFFSET(xtty, consts); |
1748 | 1054 LOG_OFFSET(xtty, insts); |
0 | 1055 LOG_OFFSET(xtty, stub); |
1056 LOG_OFFSET(xtty, scopes_data); | |
1057 LOG_OFFSET(xtty, scopes_pcs); | |
1058 LOG_OFFSET(xtty, dependencies); | |
1059 LOG_OFFSET(xtty, handler_table); | |
1060 LOG_OFFSET(xtty, nul_chk_table); | |
1061 LOG_OFFSET(xtty, oops); | |
18041 | 1062 LOG_OFFSET(xtty, metadata); |
0 | 1063 |
1064 xtty->method(method()); | |
1065 xtty->stamp(); | |
1066 xtty->end_elem(); | |
1067 } | |
1068 } | |
1069 | |
1070 #undef LOG_OFFSET | |
1071 | |
1072 | |
1073 // Print out more verbose output usually for a newly created nmethod. | |
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1074 void nmethod::print_on(outputStream* st, const char* msg) const { |
0 | 1075 if (st != NULL) { |
1076 ttyLocker ttyl; | |
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1077 if (WizardMode) { |
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1078 CompileTask::print_compilation(st, this, msg, /*short_form:*/ true); |
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1079 st->print_cr(" (" INTPTR_FORMAT ")", this); |
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1080 } else { |
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1081 CompileTask::print_compilation(st, this, msg, /*short_form:*/ false); |
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1082 } |
0 | 1083 } |
1084 } | |
1085 | |
1086 | |
1087 void nmethod::print_nmethod(bool printmethod) { | |
1088 ttyLocker ttyl; // keep the following output all in one block | |
1089 if (xtty != NULL) { | |
1090 xtty->begin_head("print_nmethod"); | |
1091 xtty->stamp(); | |
1092 xtty->end_head(); | |
1093 } | |
1094 // print the header part first | |
1095 print(); | |
1096 // then print the requested information | |
1097 if (printmethod) { | |
1098 print_code(); | |
1099 print_pcs(); | |
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1100 if (oop_maps()) { |
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1101 oop_maps()->print(); |
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1102 } |
0 | 1103 } |
1104 if (PrintDebugInfo) { | |
1105 print_scopes(); | |
1106 } | |
1107 if (PrintRelocations) { | |
1108 print_relocations(); | |
1109 } | |
1110 if (PrintDependencies) { | |
1111 print_dependencies(); | |
1112 } | |
1113 if (PrintExceptionHandlers) { | |
1114 print_handler_table(); | |
1115 print_nul_chk_table(); | |
1116 } | |
1117 if (xtty != NULL) { | |
1118 xtty->tail("print_nmethod"); | |
1119 } | |
1120 } | |
1121 | |
1122 | |
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1123 // Promote one word from an assembly-time handle to a live embedded oop. |
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1124 inline void nmethod::initialize_immediate_oop(oop* dest, jobject handle) { |
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1125 if (handle == NULL || |
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1126 // As a special case, IC oops are initialized to 1 or -1. |
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1127 handle == (jobject) Universe::non_oop_word()) { |
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1128 (*dest) = (oop) handle; |
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1129 } else { |
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1130 (*dest) = JNIHandles::resolve_non_null(handle); |
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1131 } |
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1132 } |
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1133 |
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1134 |
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1135 // Have to have the same name because it's called by a template |
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1136 void nmethod::copy_values(GrowableArray<jobject>* array) { |
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1137 int length = array->length(); |
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1138 assert((address)(oops_begin() + length) <= (address)oops_end(), "oops big enough"); |
1563
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1139 oop* dest = oops_begin(); |
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1140 for (int index = 0 ; index < length; index++) { |
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1141 initialize_immediate_oop(&dest[index], array->at(index)); |
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1142 } |
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1143 |
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1144 // Now we can fix up all the oops in the code. We need to do this |
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1145 // in the code because the assembler uses jobjects as placeholders. |
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1146 // The code and relocations have already been initialized by the |
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1147 // CodeBlob constructor, so it is valid even at this early point to |
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1148 // iterate over relocations and patch the code. |
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1149 fix_oop_relocations(NULL, NULL, /*initialize_immediates=*/ true); |
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1150 } |
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1151 |
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1152 void nmethod::copy_values(GrowableArray<Metadata*>* array) { |
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1153 int length = array->length(); |
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1154 assert((address)(metadata_begin() + length) <= (address)metadata_end(), "big enough"); |
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1155 Metadata** dest = metadata_begin(); |
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1156 for (int index = 0 ; index < length; index++) { |
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1157 dest[index] = array->at(index); |
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1158 } |
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1159 } |
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1160 |
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1161 bool nmethod::is_at_poll_return(address pc) { |
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1162 RelocIterator iter(this, pc, pc+1); |
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1163 while (iter.next()) { |
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1164 if (iter.type() == relocInfo::poll_return_type) |
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1165 return true; |
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1166 } |
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1167 return false; |
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1168 } |
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1169 |
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1170 |
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1171 bool nmethod::is_at_poll_or_poll_return(address pc) { |
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1172 RelocIterator iter(this, pc, pc+1); |
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1173 while (iter.next()) { |
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1174 relocInfo::relocType t = iter.type(); |
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1175 if (t == relocInfo::poll_return_type || t == relocInfo::poll_type) |
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1176 return true; |
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1177 } |
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1178 return false; |
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1179 } |
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1180 |
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1181 |
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1182 void nmethod::fix_oop_relocations(address begin, address end, bool initialize_immediates) { |
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1183 // re-patch all oop-bearing instructions, just in case some oops moved |
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1184 RelocIterator iter(this, begin, end); |
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1185 while (iter.next()) { |
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1186 if (iter.type() == relocInfo::oop_type) { |
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|
1187 oop_Relocation* reloc = iter.oop_reloc(); |
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1188 if (initialize_immediates && reloc->oop_is_immediate()) { |
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
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1189 oop* dest = reloc->oop_addr(); |
1a5913bf5e19
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twisti
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diff
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|
1190 initialize_immediate_oop(dest, (jobject) *dest); |
1a5913bf5e19
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diff
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|
1191 } |
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diff
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|
1192 // Refresh the oop-related bits of this instruction. |
1a5913bf5e19
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twisti
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1538
diff
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|
1193 reloc->fix_oop_relocation(); |
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1194 } else if (iter.type() == relocInfo::metadata_type) { |
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|
1195 metadata_Relocation* reloc = iter.metadata_reloc(); |
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1196 reloc->fix_metadata_relocation(); |
1563
1a5913bf5e19
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twisti
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diff
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|
1197 } |
1a5913bf5e19
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diff
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|
1198 } |
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|
1199 } |
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|
1200 |
1a5913bf5e19
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twisti
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diff
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|
1201 |
2375
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
2360
diff
changeset
|
1202 void nmethod::verify_oop_relocations() { |
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
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parents:
2360
diff
changeset
|
1203 // Ensure sure that the code matches the current oop values |
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
2360
diff
changeset
|
1204 RelocIterator iter(this, NULL, NULL); |
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
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parents:
2360
diff
changeset
|
1205 while (iter.next()) { |
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
2360
diff
changeset
|
1206 if (iter.type() == relocInfo::oop_type) { |
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
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diff
changeset
|
1207 oop_Relocation* reloc = iter.oop_reloc(); |
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
2360
diff
changeset
|
1208 if (!reloc->oop_is_immediate()) { |
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
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parents:
2360
diff
changeset
|
1209 reloc->verify_oop_relocation(); |
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
2360
diff
changeset
|
1210 } |
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
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diff
changeset
|
1211 } |
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
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2360
diff
changeset
|
1212 } |
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
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diff
changeset
|
1213 } |
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
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2360
diff
changeset
|
1214 |
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
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diff
changeset
|
1215 |
0 | 1216 ScopeDesc* nmethod::scope_desc_at(address pc) { |
1217 PcDesc* pd = pc_desc_at(pc); | |
1218 guarantee(pd != NULL, "scope must be present"); | |
1219 return new ScopeDesc(this, pd->scope_decode_offset(), | |
9707 | 1220 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
|
1221 pd->return_oop()); |
0 | 1222 } |
1223 | |
1224 | |
1225 void nmethod::clear_inline_caches() { | |
1226 assert(SafepointSynchronize::is_at_safepoint(), "cleaning of IC's only allowed at safepoint"); | |
1227 if (is_zombie()) { | |
1228 return; | |
1229 } | |
1230 | |
1231 RelocIterator iter(this); | |
1232 while (iter.next()) { | |
1233 iter.reloc()->clear_inline_cache(); | |
1234 } | |
1235 } | |
1236 | |
1237 | |
1238 void nmethod::cleanup_inline_caches() { | |
1239 | |
1538
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
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parents:
1490
diff
changeset
|
1240 assert_locked_or_safepoint(CompiledIC_lock); |
0 | 1241 |
1242 // If the method is not entrant or zombie then a JMP is plastered over the | |
1243 // first few bytes. If an oop in the old code was there, that oop | |
1244 // should not get GC'd. Skip the first few bytes of oops on | |
1245 // not-entrant methods. | |
1246 address low_boundary = verified_entry_point(); | |
1247 if (!is_in_use()) { | |
1248 low_boundary += NativeJump::instruction_size; | |
1249 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
1250 // This means that the low_boundary is going to be a little too high. | |
1251 // This shouldn't matter, since oops of non-entrant methods are never used. | |
1252 // In fact, why are we bothering to look at oops in a non-entrant method?? | |
1253 } | |
1254 | |
1255 // Find all calls in an nmethod, and clear the ones that points to zombie methods | |
1256 ResourceMark rm; | |
1257 RelocIterator iter(this, low_boundary); | |
1258 while(iter.next()) { | |
1259 switch(iter.type()) { | |
1260 case relocInfo::virtual_call_type: | |
1261 case relocInfo::opt_virtual_call_type: { | |
1262 CompiledIC *ic = CompiledIC_at(iter.reloc()); | |
1263 // Ok, to lookup references to zombies here | |
1264 CodeBlob *cb = CodeCache::find_blob_unsafe(ic->ic_destination()); | |
1265 if( cb != NULL && cb->is_nmethod() ) { | |
1266 nmethod* nm = (nmethod*)cb; | |
1267 // Clean inline caches pointing to both zombie and not_entrant methods | |
1202 | 1268 if (!nm->is_in_use() || (nm->method()->code() != nm)) ic->set_to_clean(); |
0 | 1269 } |
1270 break; | |
1271 } | |
1272 case relocInfo::static_call_type: { | |
1273 CompiledStaticCall *csc = compiledStaticCall_at(iter.reloc()); | |
1274 CodeBlob *cb = CodeCache::find_blob_unsafe(csc->destination()); | |
1275 if( cb != NULL && cb->is_nmethod() ) { | |
1276 nmethod* nm = (nmethod*)cb; | |
1277 // Clean inline caches pointing to both zombie and not_entrant methods | |
1202 | 1278 if (!nm->is_in_use() || (nm->method()->code() != nm)) csc->set_to_clean(); |
0 | 1279 } |
1280 break; | |
1281 } | |
1282 } | |
1283 } | |
1284 } | |
1285 | |
989
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jrose
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931
diff
changeset
|
1286 // This is a private interface with the sweeper. |
0 | 1287 void nmethod::mark_as_seen_on_stack() { |
12324
510fbd28919c
8020151: PSR:PERF Large performance regressions when code cache is filled
anoll
parents:
12175
diff
changeset
|
1288 assert(is_alive(), "Must be an alive method"); |
1644
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parents:
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changeset
|
1289 // Set the traversal mark to ensure that the sweeper does 2 |
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
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parents:
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changeset
|
1290 // cleaning passes before moving to zombie. |
0 | 1291 set_stack_traversal_mark(NMethodSweeper::traversal_count()); |
1292 } | |
1293 | |
2342
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7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
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changeset
|
1294 // Tell if a non-entrant method can be converted to a zombie (i.e., |
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
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diff
changeset
|
1295 // there are no activations on the stack, not in use by the VM, |
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
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changeset
|
1296 // and not in use by the ServiceThread) |
0 | 1297 bool nmethod::can_not_entrant_be_converted() { |
1298 assert(is_not_entrant(), "must be a non-entrant method"); | |
1299 | |
1300 // Since the nmethod sweeper only does partial sweep the sweeper's traversal | |
1301 // count can be greater than the stack traversal count before it hits the | |
1302 // nmethod for the second time. | |
2342
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7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
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parents:
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diff
changeset
|
1303 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
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diff
changeset
|
1304 !is_locked_by_vm(); |
0 | 1305 } |
1306 | |
1307 void nmethod::inc_decompile_count() { | |
9707 | 1308 if (!is_compiled_by_c2() && !is_compiled_by_graal()) return; |
0 | 1309 // Could be gated by ProfileTraps, but do not bother... |
6725
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coleenp
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changeset
|
1310 Method* m = method(); |
0 | 1311 if (m == NULL) return; |
6725
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coleenp
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changeset
|
1312 MethodData* mdo = m->method_data(); |
0 | 1313 if (mdo == NULL) return; |
6725
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coleenp
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diff
changeset
|
1314 // There is a benign race here. See comments in methodData.hpp. |
0 | 1315 mdo->inc_decompile_count(); |
1316 } | |
1317 | |
1318 void nmethod::make_unloaded(BoolObjectClosure* is_alive, oop cause) { | |
1319 | |
1320 post_compiled_method_unload(); | |
1321 | |
1322 // Since this nmethod is being unloaded, make sure that dependencies | |
1323 // recorded in instanceKlasses get flushed and pass non-NULL closure to | |
1324 // indicate that this work is being done during a GC. | |
1325 assert(Universe::heap()->is_gc_active(), "should only be called during gc"); | |
1326 assert(is_alive != NULL, "Should be non-NULL"); | |
1327 // A non-NULL is_alive closure indicates that this is being called during GC. | |
1328 flush_dependencies(is_alive); | |
1329 | |
1330 // Break cycle between nmethod & method | |
1331 if (TraceClassUnloading && WizardMode) { | |
1332 tty->print_cr("[Class unloading: Making nmethod " INTPTR_FORMAT | |
6725
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changeset
|
1333 " unloadable], Method*(" INTPTR_FORMAT |
0 | 1334 "), cause(" INTPTR_FORMAT ")", |
1335 this, (address)_method, (address)cause); | |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
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changeset
|
1336 if (!Universe::heap()->is_gc_active()) |
148e5441d916
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changeset
|
1337 cause->klass()->print(); |
0 | 1338 } |
941 | 1339 // Unlink the osr method, so we do not look this up again |
1340 if (is_osr_method()) { | |
1341 invalidate_osr_method(); | |
1342 } | |
6725
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changeset
|
1343 // If _method is already NULL the Method* is about to be unloaded, |
0 | 1344 // so we don't have to break the cycle. Note that it is possible to |
6725
da91efe96a93
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changeset
|
1345 // 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
|
1346 // it is pointing to some oop (other than the Method*) being unloaded. |
0 | 1347 if (_method != NULL) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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changeset
|
1348 // OSR methods point to the Method*, but the Method* does not |
0 | 1349 // point back! |
1350 if (_method->code() == this) { | |
1351 _method->clear_code(); // Break a cycle | |
1352 } | |
1353 _method = NULL; // Clear the method of this dead nmethod | |
1354 } | |
9707 | 1355 |
1356 #ifdef GRAAL | |
1357 // The method can only be unloaded after the pointer to the installed code | |
1358 // Java wrapper is no longer alive. Here we need to clear out this weak | |
1359 // reference to the dead object. | |
1360 if (_graal_installed_code != NULL) { | |
15161
2c940b1a48d8
Convert InstalledCode from an interface into an abstract class.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
14968
diff
changeset
|
1361 InstalledCode::set_address(_graal_installed_code, 0); |
9707 | 1362 _graal_installed_code = NULL; |
1363 } | |
1364 #endif | |
1365 | |
0 | 1366 // Make the class unloaded - i.e., change state and notify sweeper |
1538
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6950075: nmethod sweeper should operate concurrently
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parents:
1490
diff
changeset
|
1367 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint"); |
0 | 1368 if (is_in_use()) { |
1369 // Transitioning directly from live to unloaded -- so | |
1370 // we need to force a cache clean-up; remember this | |
1371 // for later on. | |
1372 CodeCache::set_needs_cache_clean(true); | |
1373 } | |
1644
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
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parents:
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diff
changeset
|
1374 _state = unloaded; |
0 | 1375 |
1109
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1376 // Log the unloading. |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
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994
diff
changeset
|
1377 log_state_change(); |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
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parents:
994
diff
changeset
|
1378 |
6725
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coleenp
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changeset
|
1379 // The Method* is gone at this point |
0 | 1380 assert(_method == NULL, "Tautology"); |
1381 | |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1382 set_osr_link(NULL); |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
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diff
changeset
|
1383 //set_scavenge_root_link(NULL); // done by prune_scavenge_root_nmethods |
13074
78da3894b86f
8027593: performance drop with constrained codecache starting with hs25 b111
anoll
parents:
13071
diff
changeset
|
1384 NMethodSweeper::report_state_change(this); |
0 | 1385 } |
1386 | |
1387 void nmethod::invalidate_osr_method() { | |
1388 assert(_entry_bci != InvocationEntryBci, "wrong kind of nmethod"); | |
1389 // Remove from list of active nmethods | |
1390 if (method() != NULL) | |
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6806
diff
changeset
|
1391 method()->method_holder()->remove_osr_nmethod(this); |
0 | 1392 // Set entry as invalid |
1393 _entry_bci = InvalidOSREntryBci; | |
1394 } | |
1395 | |
1109
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
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parents:
994
diff
changeset
|
1396 void nmethod::log_state_change() const { |
0 | 1397 if (LogCompilation) { |
1398 if (xtty != NULL) { | |
1399 ttyLocker ttyl; // keep the following output all in one block | |
1644
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
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diff
changeset
|
1400 if (_state == unloaded) { |
1109
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
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parents:
994
diff
changeset
|
1401 xtty->begin_elem("make_unloaded thread='" UINTX_FORMAT "'", |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1402 os::current_thread_id()); |
032260830071
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parents:
994
diff
changeset
|
1403 } else { |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
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parents:
994
diff
changeset
|
1404 xtty->begin_elem("make_not_entrant thread='" UINTX_FORMAT "'%s", |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
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parents:
994
diff
changeset
|
1405 os::current_thread_id(), |
1644
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
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diff
changeset
|
1406 (_state == zombie ? " zombie='1'" : "")); |
1109
032260830071
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changeset
|
1407 } |
0 | 1408 log_identity(xtty); |
1409 xtty->stamp(); | |
1410 xtty->end_elem(); | |
1411 } | |
1412 } | |
1644
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
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diff
changeset
|
1413 if (PrintCompilation && _state != unloaded) { |
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2376
diff
changeset
|
1414 print_on(tty, _state == zombie ? "made zombie" : "made not entrant"); |
0 | 1415 } |
1416 } | |
1417 | |
13074
78da3894b86f
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anoll
parents:
13071
diff
changeset
|
1418 /** |
78da3894b86f
8027593: performance drop with constrained codecache starting with hs25 b111
anoll
parents:
13071
diff
changeset
|
1419 * Common functionality for both make_not_entrant and make_zombie |
78da3894b86f
8027593: performance drop with constrained codecache starting with hs25 b111
anoll
parents:
13071
diff
changeset
|
1420 */ |
1141 | 1421 bool nmethod::make_not_entrant_or_zombie(unsigned int state) { |
0 | 1422 assert(state == zombie || state == not_entrant, "must be zombie or not_entrant"); |
2342
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
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parents:
2321
diff
changeset
|
1423 assert(!is_zombie(), "should not already be a zombie"); |
0 | 1424 |
1644
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
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diff
changeset
|
1425 // Make sure neither the nmethod nor the method is flushed in case of a safepoint in code below. |
0 | 1426 nmethodLocker nml(this); |
1644
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
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diff
changeset
|
1427 methodHandle the_method(method()); |
1726 | 1428 No_Safepoint_Verifier nsv; |
0 | 1429 |
12080 | 1430 // during patching, depending on the nmethod state we must notify the GC that |
1431 // code has been unloaded, unregistering it. We cannot do this right while | |
1432 // holding the Patching_lock because we need to use the CodeCache_lock. This | |
1433 // would be prone to deadlocks. | |
1434 // This flag is used to remember whether we need to later lock and unregister. | |
1435 bool nmethod_needs_unregister = false; | |
1436 | |
0 | 1437 { |
1109
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1438 // invalidate osr nmethod before acquiring the patching lock since |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1439 // they both acquire leaf locks and we don't want a deadlock. |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1440 // This logic is equivalent to the logic below for patching the |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1441 // verified entry point of regular methods. |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1442 if (is_osr_method()) { |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1443 // this effectively makes the osr nmethod not entrant |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1444 invalidate_osr_method(); |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1445 } |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1446 |
0 | 1447 // Enter critical section. Does not block for safepoint. |
1448 MutexLockerEx pl(Patching_lock, Mutex::_no_safepoint_check_flag); | |
1109
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1449 |
1644
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1450 if (_state == state) { |
1109
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1451 // another thread already performed this transition so nothing |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1452 // to do, but return false to indicate this. |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1453 return false; |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1454 } |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1455 |
0 | 1456 // The caller can be calling the method statically or through an inline |
1457 // cache call. | |
1109
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1458 if (!is_osr_method() && !is_not_entrant()) { |
0 | 1459 NativeJump::patch_verified_entry(entry_point(), verified_entry_point(), |
1460 SharedRuntime::get_handle_wrong_method_stub()); | |
1461 } | |
1462 | |
1644
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1463 if (is_in_use()) { |
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1464 // It's a true state change, so mark the method as decompiled. |
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1465 // Do it only for transition from alive. |
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1466 inc_decompile_count(); |
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1467 } |
1206
87684f1a88b5
6614597: Performance variability in jvm2008 xml.validation
kvn
parents:
1204
diff
changeset
|
1468 |
12080 | 1469 // If the state is becoming a zombie, signal to unregister the nmethod with |
1470 // the heap. | |
1471 // This nmethod may have already been unloaded during a full GC. | |
1472 if ((state == zombie) && !is_unloaded()) { | |
1473 nmethod_needs_unregister = true; | |
1474 } | |
1475 | |
12324
510fbd28919c
8020151: PSR:PERF Large performance regressions when code cache is filled
anoll
parents:
12175
diff
changeset
|
1476 // Must happen before state change. Otherwise we have a race condition in |
510fbd28919c
8020151: PSR:PERF Large performance regressions when code cache is filled
anoll
parents:
12175
diff
changeset
|
1477 // nmethod::can_not_entrant_be_converted(). I.e., a method can immediately |
510fbd28919c
8020151: PSR:PERF Large performance regressions when code cache is filled
anoll
parents:
12175
diff
changeset
|
1478 // transition its state from 'not_entrant' to 'zombie' without having to wait |
510fbd28919c
8020151: PSR:PERF Large performance regressions when code cache is filled
anoll
parents:
12175
diff
changeset
|
1479 // for stack scanning. |
510fbd28919c
8020151: PSR:PERF Large performance regressions when code cache is filled
anoll
parents:
12175
diff
changeset
|
1480 if (state == not_entrant) { |
510fbd28919c
8020151: PSR:PERF Large performance regressions when code cache is filled
anoll
parents:
12175
diff
changeset
|
1481 mark_as_seen_on_stack(); |
510fbd28919c
8020151: PSR:PERF Large performance regressions when code cache is filled
anoll
parents:
12175
diff
changeset
|
1482 OrderAccess::storestore(); |
510fbd28919c
8020151: PSR:PERF Large performance regressions when code cache is filled
anoll
parents:
12175
diff
changeset
|
1483 } |
510fbd28919c
8020151: PSR:PERF Large performance regressions when code cache is filled
anoll
parents:
12175
diff
changeset
|
1484 |
0 | 1485 // Change state |
1644
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1486 _state = state; |
1109
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
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parents:
994
diff
changeset
|
1487 |
032260830071
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parents:
994
diff
changeset
|
1488 // Log the transition once |
032260830071
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never
parents:
994
diff
changeset
|
1489 log_state_change(); |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1490 |
1644
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1491 // Remove nmethod from method. |
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1492 // We need to check if both the _code and _from_compiled_code_entry_point |
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1493 // refer to this nmethod because there is a race in setting these two fields |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1494 // in Method* as seen in bugid 4947125. |
1644
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1495 // If the vep() points to the zombie nmethod, the memory for the nmethod |
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1496 // could be flushed and the compiler and vtable stubs could still call |
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1497 // through it. |
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1498 if (method() != NULL && (method()->code() == this || |
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
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parents:
1616
diff
changeset
|
1499 method()->from_compiled_entry() == verified_entry_point())) { |
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1500 HandleMark hm; |
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1501 method()->clear_code(); |
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1502 } |
0 | 1503 } // leave critical region under Patching_lock |
1504 | |
1538
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1490
diff
changeset
|
1505 // When the nmethod becomes zombie it is no longer alive so the |
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1490
diff
changeset
|
1506 // dependencies must be flushed. nmethods in the not_entrant |
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1490
diff
changeset
|
1507 // state will be flushed later when the transition to zombie |
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1490
diff
changeset
|
1508 // happens or they get unloaded. |
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1490
diff
changeset
|
1509 if (state == zombie) { |
1726 | 1510 { |
1511 // Flushing dependecies must be done before any possible | |
1512 // safepoint can sneak in, otherwise the oops used by the | |
1513 // dependency logic could have become stale. | |
1514 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
12080 | 1515 if (nmethod_needs_unregister) { |
1516 Universe::heap()->unregister_nmethod(this); | |
1517 } | |
1726 | 1518 flush_dependencies(NULL); |
1519 } | |
1644
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1520 |
2342
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2321
diff
changeset
|
1521 // zombie only - if a JVMTI agent has enabled the CompiledMethodUnload |
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2321
diff
changeset
|
1522 // event and it hasn't already been reported for this nmethod then |
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2321
diff
changeset
|
1523 // report it now. The event may have been reported earilier if the GC |
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2321
diff
changeset
|
1524 // marked it for unloading). JvmtiDeferredEventQueue support means |
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2321
diff
changeset
|
1525 // we no longer go to a safepoint here. |
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2321
diff
changeset
|
1526 post_compiled_method_unload(); |
1726 | 1527 |
1528 #ifdef ASSERT | |
1529 // It's no longer safe to access the oops section since zombie | |
1530 // nmethods aren't scanned for GC. | |
1531 _oops_are_stale = true; | |
1532 #endif | |
12161
e1fbb86b47e4
8016277: Crash in nmethod::is_compiled_by_c1() on x86
roland
parents:
12080
diff
changeset
|
1533 // the Method may be reclaimed by class unloading now that the |
e1fbb86b47e4
8016277: Crash in nmethod::is_compiled_by_c1() on x86
roland
parents:
12080
diff
changeset
|
1534 // nmethod is in zombie state |
e1fbb86b47e4
8016277: Crash in nmethod::is_compiled_by_c1() on x86
roland
parents:
12080
diff
changeset
|
1535 set_method(NULL); |
1538
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1490
diff
changeset
|
1536 } else { |
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1490
diff
changeset
|
1537 assert(state == not_entrant, "other cases may need to be handled differently"); |
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1490
diff
changeset
|
1538 } |
12414
98031e66de15
Fix unittests
Christos Kotselidis <christos.kotselidis@oracle.com>
parents:
12411
diff
changeset
|
1539 #ifdef GRAAL |
13230
01080e31692d
fixed crash when TraceCreateZombies is enabled
Doug Simon <doug.simon@oracle.com>
parents:
13102
diff
changeset
|
1540 if (_graal_installed_code != NULL) { |
15161
2c940b1a48d8
Convert InstalledCode from an interface into an abstract class.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
14968
diff
changeset
|
1541 // Break the link between nmethod and InstalledCode such that the nmethod can subsequently be flushed safely. |
2c940b1a48d8
Convert InstalledCode from an interface into an abstract class.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
14968
diff
changeset
|
1542 InstalledCode::set_address(_graal_installed_code, 0); |
13230
01080e31692d
fixed crash when TraceCreateZombies is enabled
Doug Simon <doug.simon@oracle.com>
parents:
13102
diff
changeset
|
1543 } |
12414
98031e66de15
Fix unittests
Christos Kotselidis <christos.kotselidis@oracle.com>
parents:
12411
diff
changeset
|
1544 #endif |
1538
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1490
diff
changeset
|
1545 |
0 | 1546 if (TraceCreateZombies) { |
9707 | 1547 ResourceMark m; |
13230
01080e31692d
fixed crash when TraceCreateZombies is enabled
Doug Simon <doug.simon@oracle.com>
parents:
13102
diff
changeset
|
1548 tty->print_cr("nmethod <" INTPTR_FORMAT "> %s code made %s", this, this->method() ? this->method()->name_and_sig_as_C_string() : "null", (state == not_entrant) ? "not entrant" : "zombie"); |
0 | 1549 } |
1550 | |
13074
78da3894b86f
8027593: performance drop with constrained codecache starting with hs25 b111
anoll
parents:
13071
diff
changeset
|
1551 NMethodSweeper::report_state_change(this); |
1109
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1552 return true; |
0 | 1553 } |
1554 | |
1555 void nmethod::flush() { | |
1556 // Note that there are no valid oops in the nmethod anymore. | |
1557 assert(is_zombie() || (is_osr_method() && is_unloaded()), "must be a zombie method"); | |
1558 assert(is_marked_for_reclamation() || (is_osr_method() && is_unloaded()), "must be marked for reclamation"); | |
1559 | |
1560 assert (!is_locked_by_vm(), "locked methods shouldn't be flushed"); | |
1538
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1490
diff
changeset
|
1561 assert_locked_or_safepoint(CodeCache_lock); |
0 | 1562 |
1563 // completely deallocate this method | |
4872
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4006
diff
changeset
|
1564 Events::log(JavaThread::current(), "flushing nmethod " INTPTR_FORMAT, this); |
0 | 1565 if (PrintMethodFlushing) { |
1202 | 1566 tty->print_cr("*flushing nmethod %3d/" INTPTR_FORMAT ". Live blobs:" UINT32_FORMAT "/Free CodeCache:" SIZE_FORMAT "Kb", |
1567 _compile_id, this, CodeCache::nof_blobs(), CodeCache::unallocated_capacity()/1024); | |
0 | 1568 } |
1569 | |
1570 // We need to deallocate any ExceptionCache data. | |
1571 // Note that we do not need to grab the nmethod lock for this, it | |
1572 // better be thread safe if we're disposing of it! | |
1573 ExceptionCache* ec = exception_cache(); | |
1574 set_exception_cache(NULL); | |
1575 while(ec != NULL) { | |
1576 ExceptionCache* next = ec->next(); | |
1577 delete ec; | |
1578 ec = next; | |
1579 } | |
1580 | |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1581 if (on_scavenge_root_list()) { |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1582 CodeCache::drop_scavenge_root_nmethod(this); |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1583 } |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1584 |
1692 | 1585 #ifdef SHARK |
1845
a222fcfba398
6990549: Zero and Shark fixes after 6978355 and 6953144
twisti
parents:
1784
diff
changeset
|
1586 ((SharkCompiler *) compiler())->free_compiled_method(insts_begin()); |
1692 | 1587 #endif // SHARK |
1588 | |
0 | 1589 ((CodeBlob*)(this))->flush(); |
1590 | |
1591 CodeCache::free(this); | |
1592 } | |
1593 | |
1594 | |
1595 // | |
1596 // Notify all classes this nmethod is dependent on that it is no | |
1597 // longer dependent. This should only be called in two situations. | |
1598 // First, when a nmethod transitions to a zombie all dependents need | |
1599 // to be clear. Since zombification happens at a safepoint there's no | |
1600 // synchronization issues. The second place is a little more tricky. | |
1601 // During phase 1 of mark sweep class unloading may happen and as a | |
1602 // result some nmethods may get unloaded. In this case the flushing | |
1603 // of dependencies must happen during phase 1 since after GC any | |
1604 // dependencies in the unloaded nmethod won't be updated, so | |
1605 // traversing the dependency information in unsafe. In that case this | |
1606 // function is called with a non-NULL argument and this function only | |
1607 // notifies instanceKlasses that are reachable | |
1608 | |
1609 void nmethod::flush_dependencies(BoolObjectClosure* is_alive) { | |
1538
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1490
diff
changeset
|
1610 assert_locked_or_safepoint(CodeCache_lock); |
0 | 1611 assert(Universe::heap()->is_gc_active() == (is_alive != NULL), |
1612 "is_alive is non-NULL if and only if we are called during GC"); | |
1613 if (!has_flushed_dependencies()) { | |
1614 set_has_flushed_dependencies(); | |
1615 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1616 Klass* klass = deps.context_type(); |
0 | 1617 if (klass == NULL) continue; // ignore things like evol_method |
1618 | |
1619 // During GC the is_alive closure is non-NULL, and is used to | |
1620 // determine liveness of dependees that need to be updated. | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1621 if (is_alive == NULL || klass->is_loader_alive(is_alive)) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1622 InstanceKlass::cast(klass)->remove_dependent_nmethod(this); |
0 | 1623 } |
1624 } | |
1625 } | |
1626 } | |
1627 | |
1628 | |
1629 // If this oop is not live, the nmethod can be unloaded. | |
6787
8966c2d65d96
7200470: KeepAliveClosure not needed in CodeCache::do_unloading
brutisso
parents:
6725
diff
changeset
|
1630 bool nmethod::can_unload(BoolObjectClosure* is_alive, oop* root, bool unloading_occurred) { |
0 | 1631 assert(root != NULL, "just checking"); |
1632 oop obj = *root; | |
1633 if (obj == NULL || is_alive->do_object_b(obj)) { | |
1634 return false; | |
1635 } | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1636 |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1637 // 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
|
1638 // 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
|
1639 // 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
|
1640 assert(unloading_occurred || ScavengeRootsInCode, "Inconsistency in unloading"); |
0 | 1641 make_unloaded(is_alive, obj); |
1642 return true; | |
1643 } | |
1644 | |
1645 // ------------------------------------------------------------------ | |
1646 // post_compiled_method_load_event | |
1647 // new method for install_code() path | |
1648 // Transfer information from compilation to jvmti | |
1649 void nmethod::post_compiled_method_load_event() { | |
1650 | |
6725
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1651 Method* moop = method(); |
4006 | 1652 #ifndef USDT2 |
0 | 1653 HS_DTRACE_PROBE8(hotspot, compiled__method__load, |
1654 moop->klass_name()->bytes(), | |
1655 moop->klass_name()->utf8_length(), | |
1656 moop->name()->bytes(), | |
1657 moop->name()->utf8_length(), | |
1658 moop->signature()->bytes(), | |
1659 moop->signature()->utf8_length(), | |
1748 | 1660 insts_begin(), insts_size()); |
4006 | 1661 #else /* USDT2 */ |
1662 HOTSPOT_COMPILED_METHOD_LOAD( | |
1663 (char *) moop->klass_name()->bytes(), | |
1664 moop->klass_name()->utf8_length(), | |
1665 (char *) moop->name()->bytes(), | |
1666 moop->name()->utf8_length(), | |
1667 (char *) moop->signature()->bytes(), | |
1668 moop->signature()->utf8_length(), | |
1669 insts_begin(), insts_size()); | |
1670 #endif /* USDT2 */ | |
0 | 1671 |
1616
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1672 if (JvmtiExport::should_post_compiled_method_load() || |
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1673 JvmtiExport::should_post_compiled_method_unload()) { |
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1674 get_and_cache_jmethod_id(); |
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never
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1675 } |
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1676 |
0 | 1677 if (JvmtiExport::should_post_compiled_method_load()) { |
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1678 // Let the Service thread (which is a real Java thread) post the event |
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1679 MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag); |
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1680 JvmtiDeferredEventQueue::enqueue( |
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1681 JvmtiDeferredEvent::compiled_method_load_event(this)); |
0 | 1682 } |
1683 } | |
1684 | |
1616
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1685 jmethodID nmethod::get_and_cache_jmethod_id() { |
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1686 if (_jmethod_id == NULL) { |
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1687 // Cache the jmethod_id since it can no longer be looked up once the |
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1688 // method itself has been marked for unloading. |
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1689 _jmethod_id = method()->jmethod_id(); |
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1690 } |
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1691 return _jmethod_id; |
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1692 } |
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1693 |
0 | 1694 void nmethod::post_compiled_method_unload() { |
1577
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1695 if (unload_reported()) { |
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1696 // During unloading we transition to unloaded and then to zombie |
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1697 // and the unloading is reported during the first transition. |
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1698 return; |
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1699 } |
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1700 |
0 | 1701 assert(_method != NULL && !is_unloaded(), "just checking"); |
1702 DTRACE_METHOD_UNLOAD_PROBE(method()); | |
1703 | |
1704 // If a JVMTI agent has enabled the CompiledMethodUnload event then | |
1616
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1705 // post the event. Sometime later this nmethod will be made a zombie |
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1706 // by the sweeper but the Method* will not be valid at that point. |
1616
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1707 // If the _jmethod_id is null then no load event was ever requested |
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1708 // so don't bother posting the unload. The main reason for this is |
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1709 // that the jmethodID is a weak reference to the Method* so if |
1616
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1710 // it's being unloaded there's no way to look it up since the weak |
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1711 // ref will have been cleared. |
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1712 if (_jmethod_id != NULL && JvmtiExport::should_post_compiled_method_unload()) { |
0 | 1713 assert(!unload_reported(), "already unloaded"); |
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1714 JvmtiDeferredEvent event = |
2342
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1715 JvmtiDeferredEvent::compiled_method_unload_event(this, |
2195
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1716 _jmethod_id, insts_begin()); |
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1717 if (SafepointSynchronize::is_at_safepoint()) { |
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1718 // Don't want to take the queueing lock. Add it as pending and |
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1719 // it will get enqueued later. |
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1720 JvmtiDeferredEventQueue::add_pending_event(event); |
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1721 } else { |
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1722 MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag); |
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1723 JvmtiDeferredEventQueue::enqueue(event); |
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1724 } |
0 | 1725 } |
1726 | |
1727 // The JVMTI CompiledMethodUnload event can be enabled or disabled at | |
1728 // any time. As the nmethod is being unloaded now we mark it has | |
1729 // having the unload event reported - this will ensure that we don't | |
1730 // attempt to report the event in the unlikely scenario where the | |
1731 // event is enabled at the time the nmethod is made a zombie. | |
1732 set_unload_reported(); | |
1733 } | |
1734 | |
1735 // This is called at the end of the strong tracing/marking phase of a | |
1736 // GC to unload an nmethod if it contains otherwise unreachable | |
1737 // oops. | |
1738 | |
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1739 void nmethod::do_unloading(BoolObjectClosure* is_alive, bool unloading_occurred) { |
0 | 1740 // Make sure the oop's ready to receive visitors |
1741 assert(!is_zombie() && !is_unloaded(), | |
1742 "should not call follow on zombie or unloaded nmethod"); | |
1743 | |
1744 // If the method is not entrant then a JMP is plastered over the | |
1745 // first few bytes. If an oop in the old code was there, that oop | |
1746 // should not get GC'd. Skip the first few bytes of oops on | |
1747 // not-entrant methods. | |
1748 address low_boundary = verified_entry_point(); | |
1749 if (is_not_entrant()) { | |
1750 low_boundary += NativeJump::instruction_size; | |
1751 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
1752 // (See comment above.) | |
1753 } | |
1754 | |
1755 // The RedefineClasses() API can cause the class unloading invariant | |
1756 // to no longer be true. See jvmtiExport.hpp for details. | |
1757 // Also, leave a debugging breadcrumb in local flag. | |
1758 bool a_class_was_redefined = JvmtiExport::has_redefined_a_class(); | |
1759 if (a_class_was_redefined) { | |
1760 // This set of the unloading_occurred flag is done before the | |
1761 // call to post_compiled_method_unload() so that the unloading | |
1762 // of this nmethod is reported. | |
1763 unloading_occurred = true; | |
1764 } | |
1765 | |
9707 | 1766 #ifdef GRAAL |
1767 // Follow Graal method | |
1768 if (_graal_installed_code != NULL) { | |
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1769 if (_graal_installed_code->is_a(HotSpotNmethod::klass()) && HotSpotNmethod::isDefault(_graal_installed_code)) { |
9707 | 1770 if (!is_alive->do_object_b(_graal_installed_code)) { |
1771 _graal_installed_code = NULL; | |
1772 } | |
1773 } else { | |
1774 if (can_unload(is_alive, (oop*)&_graal_installed_code, unloading_occurred)) { | |
1775 return; | |
1776 } | |
1777 } | |
1778 } | |
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Gilles Duboscq <duboscq@ssw.jku.at>
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1779 |
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1780 if (_speculation_log != NULL) { |
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1781 if (!is_alive->do_object_b(_speculation_log)) { |
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1782 _speculation_log = NULL; |
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1783 } |
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|
1784 } |
9707 | 1785 #endif |
1786 | |
0 | 1787 // Exception cache |
1788 ExceptionCache* ec = exception_cache(); | |
1789 while (ec != NULL) { | |
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1790 Klass* ex_klass = ec->exception_type(); |
0 | 1791 ExceptionCache* next_ec = ec->next(); |
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1792 if (ex_klass != NULL && !ex_klass->is_loader_alive(is_alive)) { |
0 | 1793 remove_from_exception_cache(ec); |
1794 } | |
1795 ec = next_ec; | |
1796 } | |
1797 | |
1798 // If class unloading occurred we first iterate over all inline caches and | |
1799 // clear ICs where the cached oop is referring to an unloaded klass or method. | |
1800 // The remaining live cached oops will be traversed in the relocInfo::oop_type | |
1801 // iteration below. | |
1802 if (unloading_occurred) { | |
1803 RelocIterator iter(this, low_boundary); | |
1804 while(iter.next()) { | |
1805 if (iter.type() == relocInfo::virtual_call_type) { | |
1806 CompiledIC *ic = CompiledIC_at(iter.reloc()); | |
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1807 if (ic->is_icholder_call()) { |
0 | 1808 // The only exception is compiledICHolder oops which may |
1809 // yet be marked below. (We check this further below). | |
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1810 CompiledICHolder* cichk_oop = ic->cached_icholder(); |
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1811 if (cichk_oop->holder_method()->method_holder()->is_loader_alive(is_alive) && |
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1812 cichk_oop->holder_klass()->is_loader_alive(is_alive)) { |
13441 | 1813 continue; |
1814 } | |
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1815 } else { |
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1816 Metadata* ic_oop = ic->cached_metadata(); |
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1817 if (ic_oop != NULL) { |
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1818 if (ic_oop->is_klass()) { |
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1819 if (((Klass*)ic_oop)->is_loader_alive(is_alive)) { |
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1820 continue; |
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1821 } |
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1822 } else if (ic_oop->is_method()) { |
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1823 if (((Method*)ic_oop)->method_holder()->is_loader_alive(is_alive)) { |
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1824 continue; |
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1825 } |
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1826 } else { |
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1827 ShouldNotReachHere(); |
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1828 } |
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1829 } |
13441 | 1830 } |
1831 ic->set_to_clean(); | |
0 | 1832 } |
1833 } | |
1834 } | |
1835 | |
1836 // Compiled code | |
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1837 { |
0 | 1838 RelocIterator iter(this, low_boundary); |
1839 while (iter.next()) { | |
1840 if (iter.type() == relocInfo::oop_type) { | |
1841 oop_Relocation* r = iter.oop_reloc(); | |
1842 // In this loop, we must only traverse those oops directly embedded in | |
1843 // the code. Other oops (oop_index>0) are seen as part of scopes_oops. | |
1844 assert(1 == (r->oop_is_immediate()) + | |
1845 (r->oop_addr() >= oops_begin() && r->oop_addr() < oops_end()), | |
1846 "oop must be found in exactly one place"); | |
1847 if (r->oop_is_immediate() && r->oop_value() != NULL) { | |
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1848 if (can_unload(is_alive, r->oop_addr(), unloading_occurred)) { |
0 | 1849 return; |
1850 } | |
1851 } | |
1852 } | |
1853 } | |
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1854 } |
0 | 1855 |
1856 | |
1857 // Scopes | |
1858 for (oop* p = oops_begin(); p < oops_end(); p++) { | |
1859 if (*p == Universe::non_oop_word()) continue; // skip non-oops | |
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1860 if (can_unload(is_alive, p, unloading_occurred)) { |
0 | 1861 return; |
1862 } | |
1863 } | |
1864 | |
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1865 // Ensure that all metadata is still alive |
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1866 verify_metadata_loaders(low_boundary, is_alive); |
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1867 } |
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1868 |
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1869 #ifdef ASSERT |
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1870 |
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1871 class CheckClass : AllStatic { |
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1872 static BoolObjectClosure* _is_alive; |
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1873 |
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1874 // Check class_loader is alive for this bit of metadata. |
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1875 static void check_class(Metadata* md) { |
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1876 Klass* klass = NULL; |
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1877 if (md->is_klass()) { |
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1878 klass = ((Klass*)md); |
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1879 } else if (md->is_method()) { |
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1880 klass = ((Method*)md)->method_holder(); |
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1881 } else if (md->is_methodData()) { |
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1882 klass = ((MethodData*)md)->method()->method_holder(); |
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1883 } else { |
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1884 md->print(); |
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1885 ShouldNotReachHere(); |
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1886 } |
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1887 assert(klass->is_loader_alive(_is_alive), "must be alive"); |
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1888 } |
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1889 public: |
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1890 static void do_check_class(BoolObjectClosure* is_alive, nmethod* nm) { |
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1891 assert(SafepointSynchronize::is_at_safepoint(), "this is only ok at safepoint"); |
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1892 _is_alive = is_alive; |
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1893 nm->metadata_do(check_class); |
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1894 } |
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1895 }; |
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1896 |
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1897 // This is called during a safepoint so can use static data |
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1898 BoolObjectClosure* CheckClass::_is_alive = NULL; |
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1899 #endif // ASSERT |
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1900 |
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1901 |
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1902 // Processing of oop references should have been sufficient to keep |
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1903 // all strong references alive. Any weak references should have been |
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1904 // cleared as well. Visit all the metadata and ensure that it's |
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1905 // really alive. |
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1906 void nmethod::verify_metadata_loaders(address low_boundary, BoolObjectClosure* is_alive) { |
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1907 #ifdef ASSERT |
0 | 1908 RelocIterator iter(this, low_boundary); |
1909 while (iter.next()) { | |
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1910 // static_stub_Relocations may have dangling references to |
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1911 // Method*s so trim them out here. Otherwise it looks like |
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1912 // compiled code is maintaining a link to dead metadata. |
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1913 address static_call_addr = NULL; |
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1914 if (iter.type() == relocInfo::opt_virtual_call_type) { |
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1915 CompiledIC* cic = CompiledIC_at(iter.reloc()); |
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1916 if (!cic->is_call_to_interpreted()) { |
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1917 static_call_addr = iter.addr(); |
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1918 } |
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1919 } else if (iter.type() == relocInfo::static_call_type) { |
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1920 CompiledStaticCall* csc = compiledStaticCall_at(iter.reloc()); |
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1921 if (!csc->is_call_to_interpreted()) { |
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1922 static_call_addr = iter.addr(); |
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1923 } |
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1924 } |
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1925 if (static_call_addr != NULL) { |
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1926 RelocIterator sciter(this, low_boundary); |
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1927 while (sciter.next()) { |
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1928 if (sciter.type() == relocInfo::static_stub_type && |
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1929 sciter.static_stub_reloc()->static_call() == static_call_addr) { |
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1930 sciter.static_stub_reloc()->clear_inline_cache(); |
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1931 } |
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1932 } |
0 | 1933 } |
1934 } | |
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1935 // Check that the metadata embedded in the nmethod is alive |
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1936 CheckClass::do_check_class(is_alive, this); |
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1937 #endif |
0 | 1938 } |
1939 | |
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1940 |
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1941 // Iterate over metadata calling this function. Used by RedefineClasses |
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1942 void nmethod::metadata_do(void f(Metadata*)) { |
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1943 address low_boundary = verified_entry_point(); |
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1944 if (is_not_entrant()) { |
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1945 low_boundary += NativeJump::instruction_size; |
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1946 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. |
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1947 // (See comment above.) |
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1948 } |
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1949 { |
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1950 // Visit all immediate references that are embedded in the instruction stream. |
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1951 RelocIterator iter(this, low_boundary); |
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1952 while (iter.next()) { |
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1953 if (iter.type() == relocInfo::metadata_type ) { |
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1954 metadata_Relocation* r = iter.metadata_reloc(); |
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1955 // In this lmetadata, we must only follow those metadatas directly embedded in |
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1956 // the code. Other metadatas (oop_index>0) are seen as part of |
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1957 // the metadata section below. |
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1958 assert(1 == (r->metadata_is_immediate()) + |
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1959 (r->metadata_addr() >= metadata_begin() && r->metadata_addr() < metadata_end()), |
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1960 "metadata must be found in exactly one place"); |
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1961 if (r->metadata_is_immediate() && r->metadata_value() != NULL) { |
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1962 Metadata* md = r->metadata_value(); |
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1963 f(md); |
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1964 } |
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1965 } else if (iter.type() == relocInfo::virtual_call_type) { |
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1966 // Check compiledIC holders associated with this nmethod |
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1967 CompiledIC *ic = CompiledIC_at(iter.reloc()); |
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1968 if (ic->is_icholder_call()) { |
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1969 CompiledICHolder* cichk = ic->cached_icholder(); |
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1970 f(cichk->holder_method()); |
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1971 f(cichk->holder_klass()); |
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1972 } else { |
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1973 Metadata* ic_oop = ic->cached_metadata(); |
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1974 if (ic_oop != NULL) { |
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1975 f(ic_oop); |
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1976 } |
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1977 } |
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1978 } |
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1979 } |
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1980 } |
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1981 |
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1982 // Visit the metadata section |
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1983 for (Metadata** p = metadata_begin(); p < metadata_end(); p++) { |
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1984 if (*p == Universe::non_oop_word() || *p == NULL) continue; // skip non-oops |
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1985 Metadata* md = *p; |
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1986 f(md); |
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1987 } |
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1988 |
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1989 // Call function Method*, not embedded in these other places. |
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1990 if (_method != NULL) f(_method); |
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1991 } |
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1992 |
12080 | 1993 void nmethod::oops_do(OopClosure* f, bool allow_zombie) { |
0 | 1994 // make sure the oops ready to receive visitors |
12080 | 1995 assert(allow_zombie || !is_zombie(), "should not call follow on zombie nmethod"); |
1996 assert(!is_unloaded(), "should not call follow on unloaded nmethod"); | |
0 | 1997 |
1998 // If the method is not entrant or zombie then a JMP is plastered over the | |
1999 // first few bytes. If an oop in the old code was there, that oop | |
2000 // should not get GC'd. Skip the first few bytes of oops on | |
2001 // not-entrant methods. | |
2002 address low_boundary = verified_entry_point(); | |
2003 if (is_not_entrant()) { | |
2004 low_boundary += NativeJump::instruction_size; | |
2005 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
2006 // (See comment above.) | |
2007 } | |
2008 | |
9707 | 2009 #ifdef GRAAL |
2010 if (_graal_installed_code != NULL) { | |
2011 f->do_oop((oop*) &_graal_installed_code); | |
2012 } | |
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2013 if (_speculation_log != NULL) { |
5a9afbf72714
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2014 f->do_oop((oop*) &_speculation_log); |
9707 | 2015 } |
2016 #endif | |
2017 | |
0 | 2018 RelocIterator iter(this, low_boundary); |
941 | 2019 |
0 | 2020 while (iter.next()) { |
2021 if (iter.type() == relocInfo::oop_type ) { | |
2022 oop_Relocation* r = iter.oop_reloc(); | |
2023 // In this loop, we must only follow those oops directly embedded in | |
2024 // the code. Other oops (oop_index>0) are seen as part of scopes_oops. | |
941 | 2025 assert(1 == (r->oop_is_immediate()) + |
2026 (r->oop_addr() >= oops_begin() && r->oop_addr() < oops_end()), | |
2027 "oop must be found in exactly one place"); | |
0 | 2028 if (r->oop_is_immediate() && r->oop_value() != NULL) { |
2029 f->do_oop(r->oop_addr()); | |
2030 } | |
2031 } | |
2032 } | |
2033 | |
2034 // Scopes | |
989
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2035 // This includes oop constants not inlined in the code stream. |
0 | 2036 for (oop* p = oops_begin(); p < oops_end(); p++) { |
2037 if (*p == Universe::non_oop_word()) continue; // skip non-oops | |
2038 f->do_oop(p); | |
2039 } | |
2040 } | |
2041 | |
989
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2042 #define NMETHOD_SENTINEL ((nmethod*)badAddress) |
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2043 |
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2044 nmethod* volatile nmethod::_oops_do_mark_nmethods; |
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2045 |
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2046 // An nmethod is "marked" if its _mark_link is set non-null. |
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2047 // Even if it is the end of the linked list, it will have a non-null link value, |
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2048 // as long as it is on the list. |
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2049 // This code must be MP safe, because it is used from parallel GC passes. |
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2050 bool nmethod::test_set_oops_do_mark() { |
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2051 assert(nmethod::oops_do_marking_is_active(), "oops_do_marking_prologue must be called"); |
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2052 nmethod* observed_mark_link = _oops_do_mark_link; |
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2053 if (observed_mark_link == NULL) { |
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2054 // Claim this nmethod for this thread to mark. |
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2055 observed_mark_link = (nmethod*) |
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2056 Atomic::cmpxchg_ptr(NMETHOD_SENTINEL, &_oops_do_mark_link, NULL); |
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2057 if (observed_mark_link == NULL) { |
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2058 |
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2059 // Atomically append this nmethod (now claimed) to the head of the list: |
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2060 nmethod* observed_mark_nmethods = _oops_do_mark_nmethods; |
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2061 for (;;) { |
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2062 nmethod* required_mark_nmethods = observed_mark_nmethods; |
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2063 _oops_do_mark_link = required_mark_nmethods; |
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2064 observed_mark_nmethods = (nmethod*) |
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2065 Atomic::cmpxchg_ptr(this, &_oops_do_mark_nmethods, required_mark_nmethods); |
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2066 if (observed_mark_nmethods == required_mark_nmethods) |
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2067 break; |
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2068 } |
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2069 // Mark was clear when we first saw this guy. |
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2070 NOT_PRODUCT(if (TraceScavenge) print_on(tty, "oops_do, mark")); |
989
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2071 return false; |
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2072 } |
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2073 } |
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2074 // On fall through, another racing thread marked this nmethod before we did. |
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2075 return true; |
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2076 } |
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2077 |
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2078 void nmethod::oops_do_marking_prologue() { |
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2079 NOT_PRODUCT(if (TraceScavenge) tty->print_cr("[oops_do_marking_prologue")); |
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2080 assert(_oops_do_mark_nmethods == NULL, "must not call oops_do_marking_prologue twice in a row"); |
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2081 // We use cmpxchg_ptr instead of regular assignment here because the user |
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2082 // may fork a bunch of threads, and we need them all to see the same state. |
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2083 void* observed = Atomic::cmpxchg_ptr(NMETHOD_SENTINEL, &_oops_do_mark_nmethods, NULL); |
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2084 guarantee(observed == NULL, "no races in this sequential code"); |
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2085 } |
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2086 |
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2087 void nmethod::oops_do_marking_epilogue() { |
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2088 assert(_oops_do_mark_nmethods != NULL, "must not call oops_do_marking_epilogue twice in a row"); |
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2089 nmethod* cur = _oops_do_mark_nmethods; |
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2090 while (cur != NMETHOD_SENTINEL) { |
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2091 assert(cur != NULL, "not NULL-terminated"); |
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2092 nmethod* next = cur->_oops_do_mark_link; |
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2093 cur->_oops_do_mark_link = NULL; |
2375
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
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2094 cur->fix_oop_relocations(); |
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2095 NOT_PRODUCT(if (TraceScavenge) cur->print_on(tty, "oops_do, unmark")); |
989
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2096 cur = next; |
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2097 } |
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2098 void* required = _oops_do_mark_nmethods; |
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2099 void* observed = Atomic::cmpxchg_ptr(NULL, &_oops_do_mark_nmethods, required); |
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2100 guarantee(observed == required, "no races in this sequential code"); |
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2101 NOT_PRODUCT(if (TraceScavenge) tty->print_cr("oops_do_marking_epilogue]")); |
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2102 } |
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2103 |
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2104 class DetectScavengeRoot: public OopClosure { |
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2105 bool _detected_scavenge_root; |
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2106 public: |
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2107 DetectScavengeRoot() : _detected_scavenge_root(false) |
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2108 { NOT_PRODUCT(_print_nm = NULL); } |
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2109 bool detected_scavenge_root() { return _detected_scavenge_root; } |
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2110 virtual void do_oop(oop* p) { |
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2111 if ((*p) != NULL && (*p)->is_scavengable()) { |
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2112 NOT_PRODUCT(maybe_print(p)); |
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2113 _detected_scavenge_root = true; |
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2114 } |
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2115 } |
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2116 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
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2117 |
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2118 #ifndef PRODUCT |
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2119 nmethod* _print_nm; |
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2120 void maybe_print(oop* p) { |
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2121 if (_print_nm == NULL) return; |
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2122 if (!_detected_scavenge_root) _print_nm->print_on(tty, "new scavenge root"); |
3377
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2123 tty->print_cr(""PTR_FORMAT"[offset=%d] detected scavengable oop "PTR_FORMAT" (found at "PTR_FORMAT")", |
989
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2124 _print_nm, (int)((intptr_t)p - (intptr_t)_print_nm), |
12316
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2125 (void *)(*p), (intptr_t)p); |
989
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2126 (*p)->print(); |
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2127 } |
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2128 #endif //PRODUCT |
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2129 }; |
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2130 |
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2131 bool nmethod::detect_scavenge_root_oops() { |
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2132 DetectScavengeRoot detect_scavenge_root; |
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2133 NOT_PRODUCT(if (TraceScavenge) detect_scavenge_root._print_nm = this); |
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2134 oops_do(&detect_scavenge_root); |
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2135 return detect_scavenge_root.detected_scavenge_root(); |
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2136 } |
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2137 |
0 | 2138 // Method that knows how to preserve outgoing arguments at call. This method must be |
2139 // called with a frame corresponding to a Java invoke | |
2140 void nmethod::preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { | |
1692 | 2141 #ifndef SHARK |
0 | 2142 if (!method()->is_native()) { |
2143 SimpleScopeDesc ssd(this, fr.pc()); | |
2142 | 2144 Bytecode_invoke call(ssd.method(), ssd.bci()); |
10390 | 2145 bool has_receiver = call.has_receiver(); |
2146 bool has_appendix = call.has_appendix(); | |
2177
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2147 Symbol* signature = call.signature(); |
10390 | 2148 fr.oops_compiled_arguments_do(signature, has_receiver, has_appendix, reg_map, f); |
0 | 2149 } |
1692 | 2150 #endif // !SHARK |
0 | 2151 } |
2152 | |
2153 | |
2154 oop nmethod::embeddedOop_at(u_char* p) { | |
2349
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|
2155 RelocIterator iter(this, p, p + 1); |
0 | 2156 while (iter.next()) |
2157 if (iter.type() == relocInfo::oop_type) { | |
2158 return iter.oop_reloc()->oop_value(); | |
2159 } | |
2160 return NULL; | |
2161 } | |
2162 | |
2163 | |
2164 inline bool includes(void* p, void* from, void* to) { | |
2165 return from <= p && p < to; | |
2166 } | |
2167 | |
2168 | |
2169 void nmethod::copy_scopes_pcs(PcDesc* pcs, int count) { | |
2170 assert(count >= 2, "must be sentinel values, at least"); | |
2171 | |
2172 #ifdef ASSERT | |
2173 // must be sorted and unique; we do a binary search in find_pc_desc() | |
2174 int prev_offset = pcs[0].pc_offset(); | |
2175 assert(prev_offset == PcDesc::lower_offset_limit, | |
2176 "must start with a sentinel"); | |
2177 for (int i = 1; i < count; i++) { | |
2178 int this_offset = pcs[i].pc_offset(); | |
2179 assert(this_offset > prev_offset, "offsets must be sorted"); | |
2180 prev_offset = this_offset; | |
2181 } | |
2182 assert(prev_offset == PcDesc::upper_offset_limit, | |
2183 "must end with a sentinel"); | |
2184 #endif //ASSERT | |
2185 | |
1135
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2186 // Search for MethodHandle invokes and tag the nmethod. |
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2187 for (int i = 0; i < count; i++) { |
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2188 if (pcs[i].is_method_handle_invoke()) { |
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2189 set_has_method_handle_invokes(true); |
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|
2190 break; |
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|
2191 } |
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|
2192 } |
2083
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2193 assert(has_method_handle_invokes() == (_deoptimize_mh_offset != -1), "must have deopt mh handler"); |
1135
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2194 |
0 | 2195 int size = count * sizeof(PcDesc); |
2196 assert(scopes_pcs_size() >= size, "oob"); | |
2197 memcpy(scopes_pcs_begin(), pcs, size); | |
2198 | |
2199 // Adjust the final sentinel downward. | |
2200 PcDesc* last_pc = &scopes_pcs_begin()[count-1]; | |
2201 assert(last_pc->pc_offset() == PcDesc::upper_offset_limit, "sanity"); | |
1748 | 2202 last_pc->set_pc_offset(content_size() + 1); |
0 | 2203 for (; last_pc + 1 < scopes_pcs_end(); last_pc += 1) { |
2204 // Fill any rounding gaps with copies of the last record. | |
2205 last_pc[1] = last_pc[0]; | |
2206 } | |
2207 // The following assert could fail if sizeof(PcDesc) is not | |
2208 // an integral multiple of oopSize (the rounding term). | |
2209 // If it fails, change the logic to always allocate a multiple | |
2210 // of sizeof(PcDesc), and fill unused words with copies of *last_pc. | |
2211 assert(last_pc + 1 == scopes_pcs_end(), "must match exactly"); | |
2212 } | |
2213 | |
2214 void nmethod::copy_scopes_data(u_char* buffer, int size) { | |
2215 assert(scopes_data_size() >= size, "oob"); | |
2216 memcpy(scopes_data_begin(), buffer, size); | |
2217 } | |
2218 | |
2219 | |
2220 #ifdef ASSERT | |
2221 static PcDesc* linear_search(nmethod* nm, int pc_offset, bool approximate) { | |
2222 PcDesc* lower = nm->scopes_pcs_begin(); | |
2223 PcDesc* upper = nm->scopes_pcs_end(); | |
2224 lower += 1; // exclude initial sentinel | |
2225 PcDesc* res = NULL; | |
2226 for (PcDesc* p = lower; p < upper; p++) { | |
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2227 NOT_PRODUCT(--pc_nmethod_stats.pc_desc_tests); // don't count this call to match_desc |
0 | 2228 if (match_desc(p, pc_offset, approximate)) { |
2229 if (res == NULL) | |
2230 res = p; | |
2231 else | |
2232 res = (PcDesc*) badAddress; | |
2233 } | |
2234 } | |
2235 return res; | |
2236 } | |
2237 #endif | |
2238 | |
2239 | |
2240 // Finds a PcDesc with real-pc equal to "pc" | |
2241 PcDesc* nmethod::find_pc_desc_internal(address pc, bool approximate) { | |
1748 | 2242 address base_address = code_begin(); |
0 | 2243 if ((pc < base_address) || |
2244 (pc - base_address) >= (ptrdiff_t) PcDesc::upper_offset_limit) { | |
2245 return NULL; // PC is wildly out of range | |
2246 } | |
2247 int pc_offset = (int) (pc - base_address); | |
2248 | |
2249 // Check the PcDesc cache if it contains the desired PcDesc | |
2250 // (This as an almost 100% hit rate.) | |
2251 PcDesc* res = _pc_desc_cache.find_pc_desc(pc_offset, approximate); | |
2252 if (res != NULL) { | |
2253 assert(res == linear_search(this, pc_offset, approximate), "cache ok"); | |
2254 return res; | |
2255 } | |
2256 | |
2257 // Fallback algorithm: quasi-linear search for the PcDesc | |
2258 // Find the last pc_offset less than the given offset. | |
2259 // The successor must be the required match, if there is a match at all. | |
2260 // (Use a fixed radix to avoid expensive affine pointer arithmetic.) | |
2261 PcDesc* lower = scopes_pcs_begin(); | |
2262 PcDesc* upper = scopes_pcs_end(); | |
2263 upper -= 1; // exclude final sentinel | |
2264 if (lower >= upper) return NULL; // native method; no PcDescs at all | |
2265 | |
2266 #define assert_LU_OK \ | |
2267 /* invariant on lower..upper during the following search: */ \ | |
2268 assert(lower->pc_offset() < pc_offset, "sanity"); \ | |
2269 assert(upper->pc_offset() >= pc_offset, "sanity") | |
2270 assert_LU_OK; | |
2271 | |
2272 // Use the last successful return as a split point. | |
2273 PcDesc* mid = _pc_desc_cache.last_pc_desc(); | |
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2274 NOT_PRODUCT(++pc_nmethod_stats.pc_desc_searches); |
0 | 2275 if (mid->pc_offset() < pc_offset) { |
2276 lower = mid; | |
2277 } else { | |
2278 upper = mid; | |
2279 } | |
2280 | |
2281 // Take giant steps at first (4096, then 256, then 16, then 1) | |
2282 const int LOG2_RADIX = 4 /*smaller steps in debug mode:*/ debug_only(-1); | |
2283 const int RADIX = (1 << LOG2_RADIX); | |
2284 for (int step = (1 << (LOG2_RADIX*3)); step > 1; step >>= LOG2_RADIX) { | |
2285 while ((mid = lower + step) < upper) { | |
2286 assert_LU_OK; | |
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2287 NOT_PRODUCT(++pc_nmethod_stats.pc_desc_searches); |
0 | 2288 if (mid->pc_offset() < pc_offset) { |
2289 lower = mid; | |
2290 } else { | |
2291 upper = mid; | |
2292 break; | |
2293 } | |
2294 } | |
2295 assert_LU_OK; | |
2296 } | |
2297 | |
2298 // Sneak up on the value with a linear search of length ~16. | |
2299 while (true) { | |
2300 assert_LU_OK; | |
2301 mid = lower + 1; | |
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2302 NOT_PRODUCT(++pc_nmethod_stats.pc_desc_searches); |
0 | 2303 if (mid->pc_offset() < pc_offset) { |
2304 lower = mid; | |
2305 } else { | |
2306 upper = mid; | |
2307 break; | |
2308 } | |
2309 } | |
2310 #undef assert_LU_OK | |
2311 | |
2312 if (match_desc(upper, pc_offset, approximate)) { | |
2313 assert(upper == linear_search(this, pc_offset, approximate), "search ok"); | |
2314 _pc_desc_cache.add_pc_desc(upper); | |
2315 return upper; | |
2316 } else { | |
2317 assert(NULL == linear_search(this, pc_offset, approximate), "search ok"); | |
2318 return NULL; | |
2319 } | |
2320 } | |
2321 | |
2322 | |
2323 bool nmethod::check_all_dependencies() { | |
2324 bool found_check = false; | |
2325 // wholesale check of all dependencies | |
2326 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
2327 if (deps.check_dependency() != NULL) { | |
2328 found_check = true; | |
2329 NOT_DEBUG(break); | |
2330 } | |
2331 } | |
2332 return found_check; // tell caller if we found anything | |
2333 } | |
2334 | |
2335 bool nmethod::check_dependency_on(DepChange& changes) { | |
2336 // What has happened: | |
2337 // 1) a new class dependee has been added | |
2338 // 2) dependee and all its super classes have been marked | |
2339 bool found_check = false; // set true if we are upset | |
2340 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
2341 // Evaluate only relevant dependencies. | |
2342 if (deps.spot_check_dependency_at(changes) != NULL) { | |
2343 found_check = true; | |
2344 NOT_DEBUG(break); | |
2345 } | |
2346 } | |
2347 return found_check; | |
2348 } | |
2349 | |
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2350 bool nmethod::is_evol_dependent_on(Klass* dependee) { |
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2351 InstanceKlass *dependee_ik = InstanceKlass::cast(dependee); |
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2352 Array<Method*>* dependee_methods = dependee_ik->methods(); |
0 | 2353 for (Dependencies::DepStream deps(this); deps.next(); ) { |
2354 if (deps.type() == Dependencies::evol_method) { | |
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2355 Method* method = deps.method_argument(0); |
0 | 2356 for (int j = 0; j < dependee_methods->length(); j++) { |
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2357 if (dependee_methods->at(j) == method) { |
0 | 2358 // RC_TRACE macro has an embedded ResourceMark |
2359 RC_TRACE(0x01000000, | |
2360 ("Found evol dependency of nmethod %s.%s(%s) compile_id=%d on method %s.%s(%s)", | |
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2361 _method->method_holder()->external_name(), |
0 | 2362 _method->name()->as_C_string(), |
2363 _method->signature()->as_C_string(), compile_id(), | |
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2364 method->method_holder()->external_name(), |
0 | 2365 method->name()->as_C_string(), |
2366 method->signature()->as_C_string())); | |
2367 if (TraceDependencies || LogCompilation) | |
2368 deps.log_dependency(dependee); | |
2369 return true; | |
2370 } | |
2371 } | |
2372 } | |
2373 } | |
2374 return false; | |
2375 } | |
2376 | |
2377 // Called from mark_for_deoptimization, when dependee is invalidated. | |
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2378 bool nmethod::is_dependent_on_method(Method* dependee) { |
0 | 2379 for (Dependencies::DepStream deps(this); deps.next(); ) { |
2380 if (deps.type() != Dependencies::evol_method) | |
2381 continue; | |
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2382 Method* method = deps.method_argument(0); |
0 | 2383 if (method == dependee) return true; |
2384 } | |
2385 return false; | |
2386 } | |
2387 | |
2388 | |
2389 bool nmethod::is_patchable_at(address instr_addr) { | |
1748 | 2390 assert(insts_contains(instr_addr), "wrong nmethod used"); |
0 | 2391 if (is_zombie()) { |
2392 // a zombie may never be patched | |
2393 return false; | |
2394 } | |
2395 return true; | |
2396 } | |
2397 | |
2398 | |
2399 address nmethod::continuation_for_implicit_exception(address pc) { | |
2400 // Exception happened outside inline-cache check code => we are inside | |
2401 // an active nmethod => use cpc to determine a return address | |
1748 | 2402 int exception_offset = pc - code_begin(); |
0 | 2403 int cont_offset = ImplicitExceptionTable(this).at( exception_offset ); |
2404 #ifdef ASSERT | |
2405 if (cont_offset == 0) { | |
2406 Thread* thread = ThreadLocalStorage::get_thread_slow(); | |
2407 ResetNoHandleMark rnm; // Might be called from LEAF/QUICK ENTRY | |
2408 HandleMark hm(thread); | |
2409 ResourceMark rm(thread); | |
2410 CodeBlob* cb = CodeCache::find_blob(pc); | |
2411 assert(cb != NULL && cb == this, ""); | |
2412 tty->print_cr("implicit exception happened at " INTPTR_FORMAT, pc); | |
2413 print(); | |
2414 method()->print_codes(); | |
2415 print_code(); | |
2416 print_pcs(); | |
2417 } | |
2418 #endif | |
1250 | 2419 if (cont_offset == 0) { |
2420 // Let the normal error handling report the exception | |
2421 return NULL; | |
2422 } | |
1748 | 2423 return code_begin() + cont_offset; |
0 | 2424 } |
2425 | |
2426 | |
2427 | |
2428 void nmethod_init() { | |
2429 // make sure you didn't forget to adjust the filler fields | |
2430 assert(sizeof(nmethod) % oopSize == 0, "nmethod size must be multiple of a word"); | |
2431 } | |
2432 | |
2433 | |
2434 //------------------------------------------------------------------------------------------- | |
2435 | |
2436 | |
2437 // QQQ might we make this work from a frame?? | |
2438 nmethodLocker::nmethodLocker(address pc) { | |
2439 CodeBlob* cb = CodeCache::find_blob(pc); | |
2440 guarantee(cb != NULL && cb->is_nmethod(), "bad pc for a nmethod found"); | |
2441 _nm = (nmethod*)cb; | |
2442 lock_nmethod(_nm); | |
2443 } | |
2444 | |
2342
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
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2445 // Only JvmtiDeferredEvent::compiled_method_unload_event() |
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
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|
2446 // should pass zombie_ok == true. |
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
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parents:
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|
2447 void nmethodLocker::lock_nmethod(nmethod* nm, bool zombie_ok) { |
0 | 2448 if (nm == NULL) return; |
2449 Atomic::inc(&nm->_lock_count); | |
2342
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
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2450 guarantee(zombie_ok || !nm->is_zombie(), "cannot lock a zombie method"); |
0 | 2451 } |
2452 | |
2453 void nmethodLocker::unlock_nmethod(nmethod* nm) { | |
2454 if (nm == NULL) return; | |
2455 Atomic::dec(&nm->_lock_count); | |
2456 guarantee(nm->_lock_count >= 0, "unmatched nmethod lock/unlock"); | |
2457 } | |
2458 | |
1204 | 2459 |
2460 // ----------------------------------------------------------------------------- | |
2461 // nmethod::get_deopt_original_pc | |
2462 // | |
2463 // Return the original PC for the given PC if: | |
2464 // (a) the given PC belongs to a nmethod and | |
2465 // (b) it is a deopt PC | |
2466 address nmethod::get_deopt_original_pc(const frame* fr) { | |
2467 if (fr->cb() == NULL) return NULL; | |
2468 | |
2469 nmethod* nm = fr->cb()->as_nmethod_or_null(); | |
2470 if (nm != NULL && nm->is_deopt_pc(fr->pc())) | |
2471 return nm->get_original_pc(fr); | |
2472 | |
2473 return NULL; | |
0 | 2474 } |
2475 | |
2476 | |
2477 // ----------------------------------------------------------------------------- | |
1135
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2478 // MethodHandle |
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2479 |
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2480 bool nmethod::is_method_handle_return(address return_pc) { |
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2481 if (!has_method_handle_invokes()) return false; |
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2482 PcDesc* pd = pc_desc_at(return_pc); |
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2483 if (pd == NULL) |
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2484 return false; |
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2485 return pd->is_method_handle_invoke(); |
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2486 } |
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2487 |
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2488 |
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2489 // ----------------------------------------------------------------------------- |
0 | 2490 // Verification |
2491 | |
989
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2492 class VerifyOopsClosure: public OopClosure { |
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2493 nmethod* _nm; |
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2494 bool _ok; |
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|
2495 public: |
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2496 VerifyOopsClosure(nmethod* nm) : _nm(nm), _ok(true) { } |
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2497 bool ok() { return _ok; } |
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2498 virtual void do_oop(oop* p) { |
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2499 if ((*p) == NULL || (*p)->is_oop()) return; |
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2500 if (_ok) { |
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2501 _nm->print_nmethod(true); |
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|
2502 _ok = false; |
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|
2503 } |
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2504 tty->print_cr("*** non-oop "PTR_FORMAT" found at "PTR_FORMAT" (offset %d)", |
12316
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2505 (void *)(*p), (intptr_t)p, (int)((intptr_t)p - (intptr_t)_nm)); |
989
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|
2506 } |
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2507 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
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2508 }; |
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2509 |
0 | 2510 void nmethod::verify() { |
2511 | |
2512 // Hmm. OSR methods can be deopted but not marked as zombie or not_entrant | |
2513 // seems odd. | |
2514 | |
2515 if( is_zombie() || is_not_entrant() ) | |
2516 return; | |
2517 | |
2518 // Make sure all the entry points are correctly aligned for patching. | |
2519 NativeJump::check_verified_entry_alignment(entry_point(), verified_entry_point()); | |
2520 | |
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2521 // assert(method()->is_oop(), "must be valid"); |
0 | 2522 |
2523 ResourceMark rm; | |
2524 | |
2525 if (!CodeCache::contains(this)) { | |
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2526 fatal(err_msg("nmethod at " INTPTR_FORMAT " not in zone", this)); |
0 | 2527 } |
2528 | |
2529 if(is_native_method() ) | |
2530 return; | |
2531 | |
2532 nmethod* nm = CodeCache::find_nmethod(verified_entry_point()); | |
2533 if (nm != this) { | |
1490
f03d0a26bf83
6888954: argument formatting for assert() and friends
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1489
diff
changeset
|
2534 fatal(err_msg("findNMethod did not find this nmethod (" INTPTR_FORMAT ")", |
f03d0a26bf83
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1489
diff
changeset
|
2535 this)); |
0 | 2536 } |
2537 | |
2538 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
2539 if (! p->verify(this)) { | |
2540 tty->print_cr("\t\tin nmethod at " INTPTR_FORMAT " (pcs)", this); | |
2541 } | |
2542 } | |
2543 | |
989
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|
2544 VerifyOopsClosure voc(this); |
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diff
changeset
|
2545 oops_do(&voc); |
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|
2546 assert(voc.ok(), "embedded oops must be OK"); |
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diff
changeset
|
2547 verify_scavenge_root_oops(); |
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|
2548 |
0 | 2549 verify_scopes(); |
2550 } | |
2551 | |
2552 | |
2553 void nmethod::verify_interrupt_point(address call_site) { | |
13071
e2509677809c
8023037: Race between ciEnv::register_method and nmethod::make_not_entrant_or_zombie
vlivanov
parents:
12334
diff
changeset
|
2554 // Verify IC only when nmethod installation is finished. |
13441 | 2555 bool is_installed = (method()->code() == this) // nmethod is in state 'in_use' and installed |
2556 || !this->is_in_use(); // nmethod is installed, but not in 'in_use' state | |
13071
e2509677809c
8023037: Race between ciEnv::register_method and nmethod::make_not_entrant_or_zombie
vlivanov
parents:
12334
diff
changeset
|
2557 if (is_installed) { |
e2509677809c
8023037: Race between ciEnv::register_method and nmethod::make_not_entrant_or_zombie
vlivanov
parents:
12334
diff
changeset
|
2558 Thread *cur = Thread::current(); |
e2509677809c
8023037: Race between ciEnv::register_method and nmethod::make_not_entrant_or_zombie
vlivanov
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12334
diff
changeset
|
2559 if (CompiledIC_lock->owner() == cur || |
e2509677809c
8023037: Race between ciEnv::register_method and nmethod::make_not_entrant_or_zombie
vlivanov
parents:
12334
diff
changeset
|
2560 ((cur->is_VM_thread() || cur->is_ConcurrentGC_thread()) && |
e2509677809c
8023037: Race between ciEnv::register_method and nmethod::make_not_entrant_or_zombie
vlivanov
parents:
12334
diff
changeset
|
2561 SafepointSynchronize::is_at_safepoint())) { |
e2509677809c
8023037: Race between ciEnv::register_method and nmethod::make_not_entrant_or_zombie
vlivanov
parents:
12334
diff
changeset
|
2562 CompiledIC_at(this, call_site); |
e2509677809c
8023037: Race between ciEnv::register_method and nmethod::make_not_entrant_or_zombie
vlivanov
parents:
12334
diff
changeset
|
2563 CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops()); |
e2509677809c
8023037: Race between ciEnv::register_method and nmethod::make_not_entrant_or_zombie
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12334
diff
changeset
|
2564 } else { |
e2509677809c
8023037: Race between ciEnv::register_method and nmethod::make_not_entrant_or_zombie
vlivanov
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12334
diff
changeset
|
2565 MutexLocker ml_verify (CompiledIC_lock); |
e2509677809c
8023037: Race between ciEnv::register_method and nmethod::make_not_entrant_or_zombie
vlivanov
parents:
12334
diff
changeset
|
2566 CompiledIC_at(this, call_site); |
e2509677809c
8023037: Race between ciEnv::register_method and nmethod::make_not_entrant_or_zombie
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12334
diff
changeset
|
2567 } |
0 | 2568 } |
13071
e2509677809c
8023037: Race between ciEnv::register_method and nmethod::make_not_entrant_or_zombie
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diff
changeset
|
2569 |
e2509677809c
8023037: Race between ciEnv::register_method and nmethod::make_not_entrant_or_zombie
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diff
changeset
|
2570 PcDesc* pd = pc_desc_at(nativeCall_at(call_site)->return_address()); |
0 | 2571 assert(pd != NULL, "PcDesc must exist"); |
2572 for (ScopeDesc* sd = new ScopeDesc(this, pd->scope_decode_offset(), | |
9707 | 2573 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
|
2574 pd->return_oop()); |
0 | 2575 !sd->is_top(); sd = sd->sender()) { |
2576 sd->verify(); | |
2577 } | |
2578 } | |
2579 | |
2580 void nmethod::verify_scopes() { | |
2581 if( !method() ) return; // Runtime stubs have no scope | |
2582 if (method()->is_native()) return; // Ignore stub methods. | |
2583 // iterate through all interrupt point | |
2584 // and verify the debug information is valid. | |
2585 RelocIterator iter((nmethod*)this); | |
2586 while (iter.next()) { | |
2587 address stub = NULL; | |
2588 switch (iter.type()) { | |
2589 case relocInfo::virtual_call_type: | |
2590 verify_interrupt_point(iter.addr()); | |
2591 break; | |
2592 case relocInfo::opt_virtual_call_type: | |
2593 stub = iter.opt_virtual_call_reloc()->static_stub(); | |
2594 verify_interrupt_point(iter.addr()); | |
2595 break; | |
2596 case relocInfo::static_call_type: | |
2597 stub = iter.static_call_reloc()->static_stub(); | |
2598 //verify_interrupt_point(iter.addr()); | |
2599 break; | |
2600 case relocInfo::runtime_call_type: | |
2601 address destination = iter.reloc()->value(); | |
2602 // Right now there is no way to find out which entries support | |
2603 // an interrupt point. It would be nice if we had this | |
2604 // information in a table. | |
2605 break; | |
2606 } | |
2607 assert(stub == NULL || stub_contains(stub), "static call stub outside stub section"); | |
2608 } | |
2609 } | |
2610 | |
2611 | |
2612 // ----------------------------------------------------------------------------- | |
2613 // Non-product code | |
2614 #ifndef PRODUCT | |
2615 | |
989
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931
diff
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|
2616 class DebugScavengeRoot: public OopClosure { |
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6863023: need non-perm oops in code cache for JSR 292
jrose
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931
diff
changeset
|
2617 nmethod* _nm; |
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6863023: need non-perm oops in code cache for JSR 292
jrose
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931
diff
changeset
|
2618 bool _ok; |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
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931
diff
changeset
|
2619 public: |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
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931
diff
changeset
|
2620 DebugScavengeRoot(nmethod* nm) : _nm(nm), _ok(true) { } |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2621 bool ok() { return _ok; } |
148e5441d916
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jrose
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931
diff
changeset
|
2622 virtual void do_oop(oop* p) { |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2623 if ((*p) == NULL || !(*p)->is_scavengable()) return; |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2624 if (_ok) { |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2625 _nm->print_nmethod(true); |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2626 _ok = false; |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2627 } |
3377
2aa9ddbb9e60
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
2405
diff
changeset
|
2628 tty->print_cr("*** scavengable oop "PTR_FORMAT" found at "PTR_FORMAT" (offset %d)", |
12316
190899198332
7195622: CheckUnhandledOops has limited usefulness now
hseigel
parents:
12175
diff
changeset
|
2629 (void *)(*p), (intptr_t)p, (int)((intptr_t)p - (intptr_t)_nm)); |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2630 (*p)->print(); |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2631 } |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2632 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2633 }; |
0 | 2634 |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2635 void nmethod::verify_scavenge_root_oops() { |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2636 if (!on_scavenge_root_list()) { |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2637 // Actually look inside, to verify the claim that it's clean. |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2638 DebugScavengeRoot debug_scavenge_root(this); |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2639 oops_do(&debug_scavenge_root); |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2640 if (!debug_scavenge_root.ok()) |
3377
2aa9ddbb9e60
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
2405
diff
changeset
|
2641 fatal("found an unadvertised bad scavengable oop in the code cache"); |
0 | 2642 } |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2643 assert(scavenge_root_not_marked(), ""); |
0 | 2644 } |
2645 | |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
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30
diff
changeset
|
2646 #endif // PRODUCT |
0 | 2647 |
2648 // Printing operations | |
2649 | |
2650 void nmethod::print() const { | |
2651 ResourceMark rm; | |
2652 ttyLocker ttyl; // keep the following output all in one block | |
2653 | |
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2376
diff
changeset
|
2654 tty->print("Compiled method "); |
0 | 2655 |
2656 if (is_compiled_by_c1()) { | |
2657 tty->print("(c1) "); | |
2658 } else if (is_compiled_by_c2()) { | |
2659 tty->print("(c2) "); | |
1692 | 2660 } else if (is_compiled_by_shark()) { |
2661 tty->print("(shark) "); | |
9707 | 2662 } else if (is_compiled_by_graal()) { |
2663 tty->print("(Graal) "); | |
0 | 2664 } else { |
2665 tty->print("(nm) "); | |
2666 } | |
2667 | |
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2376
diff
changeset
|
2668 print_on(tty, NULL); |
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2376
diff
changeset
|
2669 |
0 | 2670 if (WizardMode) { |
2671 tty->print("((nmethod*) "INTPTR_FORMAT ") ", this); | |
2672 tty->print(" for method " INTPTR_FORMAT , (address)method()); | |
2673 tty->print(" { "); | |
2674 if (is_in_use()) tty->print("in_use "); | |
2675 if (is_not_entrant()) tty->print("not_entrant "); | |
2676 if (is_zombie()) tty->print("zombie "); | |
2677 if (is_unloaded()) tty->print("unloaded "); | |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2678 if (on_scavenge_root_list()) tty->print("scavenge_root "); |
0 | 2679 tty->print_cr("}:"); |
2680 } | |
2681 if (size () > 0) tty->print_cr(" total in heap [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2682 (address)this, | |
2683 (address)this + size(), | |
2684 size()); | |
2685 if (relocation_size () > 0) tty->print_cr(" relocation [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2686 relocation_begin(), | |
2687 relocation_end(), | |
2688 relocation_size()); | |
1762
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
2689 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
|
2690 consts_begin(), |
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
2691 consts_end(), |
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
2692 consts_size()); |
1748 | 2693 if (insts_size () > 0) tty->print_cr(" main code [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
2694 insts_begin(), | |
2695 insts_end(), | |
2696 insts_size()); | |
0 | 2697 if (stub_size () > 0) tty->print_cr(" stub code [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
2698 stub_begin(), | |
2699 stub_end(), | |
2700 stub_size()); | |
1563
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
1538
diff
changeset
|
2701 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
|
2702 oops_begin(), |
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
1538
diff
changeset
|
2703 oops_end(), |
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
1538
diff
changeset
|
2704 oops_size()); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2705 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
|
2706 metadata_begin(), |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2707 metadata_end(), |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2708 metadata_size()); |
0 | 2709 if (scopes_data_size () > 0) tty->print_cr(" scopes data [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
2710 scopes_data_begin(), | |
2711 scopes_data_end(), | |
2712 scopes_data_size()); | |
2713 if (scopes_pcs_size () > 0) tty->print_cr(" scopes pcs [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2714 scopes_pcs_begin(), | |
2715 scopes_pcs_end(), | |
2716 scopes_pcs_size()); | |
2717 if (dependencies_size () > 0) tty->print_cr(" dependencies [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2718 dependencies_begin(), | |
2719 dependencies_end(), | |
2720 dependencies_size()); | |
2721 if (handler_table_size() > 0) tty->print_cr(" handler table [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2722 handler_table_begin(), | |
2723 handler_table_end(), | |
2724 handler_table_size()); | |
2725 if (nul_chk_table_size() > 0) tty->print_cr(" nul chk table [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2726 nul_chk_table_begin(), | |
2727 nul_chk_table_end(), | |
2728 nul_chk_table_size()); | |
2729 } | |
2730 | |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
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parents:
30
diff
changeset
|
2731 void nmethod::print_code() { |
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2732 HandleMark hm; |
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2733 ResourceMark m; |
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2734 Disassembler::decode(this); |
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2735 } |
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2736 |
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2737 |
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
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30
diff
changeset
|
2738 #ifndef PRODUCT |
0 | 2739 |
2740 void nmethod::print_scopes() { | |
2741 // Find the first pc desc for all scopes in the code and print it. | |
2742 ResourceMark rm; | |
2743 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
2744 if (p->scope_decode_offset() == DebugInformationRecorder::serialized_null) | |
2745 continue; | |
2746 | |
2747 ScopeDesc* sd = scope_desc_at(p->real_pc(this)); | |
2748 sd->print_on(tty, p); | |
2749 } | |
2750 } | |
2751 | |
2752 void nmethod::print_dependencies() { | |
2753 ResourceMark rm; | |
2754 ttyLocker ttyl; // keep the following output all in one block | |
2755 tty->print_cr("Dependencies:"); | |
2756 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
2757 deps.print_dependency(); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2758 Klass* ctxk = deps.context_type(); |
0 | 2759 if (ctxk != NULL) { |
6983 | 2760 if (ctxk->oop_is_instance() && ((InstanceKlass*)ctxk)->is_dependent_nmethod(this)) { |
2761 tty->print_cr(" [nmethod<=klass]%s", ctxk->external_name()); | |
0 | 2762 } |
2763 } | |
2764 deps.log_dependency(); // put it into the xml log also | |
2765 } | |
2766 } | |
2767 | |
2768 | |
2769 void nmethod::print_relocations() { | |
2770 ResourceMark m; // in case methods get printed via the debugger | |
2771 tty->print_cr("relocations:"); | |
2772 RelocIterator iter(this); | |
2773 iter.print(); | |
2774 if (UseRelocIndex) { | |
2775 jint* index_end = (jint*)relocation_end() - 1; | |
2776 jint index_size = *index_end; | |
2777 jint* index_start = (jint*)( (address)index_end - index_size ); | |
2778 tty->print_cr(" index @" INTPTR_FORMAT ": index_size=%d", index_start, index_size); | |
2779 if (index_size > 0) { | |
2780 jint* ip; | |
2781 for (ip = index_start; ip+2 <= index_end; ip += 2) | |
2782 tty->print_cr(" (%d %d) addr=" INTPTR_FORMAT " @" INTPTR_FORMAT, | |
2783 ip[0], | |
2784 ip[1], | |
2785 header_end()+ip[0], | |
2786 relocation_begin()-1+ip[1]); | |
2787 for (; ip < index_end; ip++) | |
2788 tty->print_cr(" (%d ?)", ip[0]); | |
10973
ef57c43512d6
8014431: cleanup warnings indicated by the -Wunused-value compiler option on linux
ccheung
parents:
10390
diff
changeset
|
2789 tty->print_cr(" @" INTPTR_FORMAT ": index_size=%d", ip, *ip); |
ef57c43512d6
8014431: cleanup warnings indicated by the -Wunused-value compiler option on linux
ccheung
parents:
10390
diff
changeset
|
2790 ip++; |
0 | 2791 tty->print_cr("reloc_end @" INTPTR_FORMAT ":", ip); |
2792 } | |
2793 } | |
2794 } | |
2795 | |
2796 | |
2797 void nmethod::print_pcs() { | |
2798 ResourceMark m; // in case methods get printed via debugger | |
2799 tty->print_cr("pc-bytecode offsets:"); | |
2800 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
2801 p->print(this); | |
2802 } | |
2803 } | |
2804 | |
100
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6667042: PrintAssembly option does not work without special plugin
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parents:
30
diff
changeset
|
2805 #endif // PRODUCT |
0 | 2806 |
2807 const char* nmethod::reloc_string_for(u_char* begin, u_char* end) { | |
2808 RelocIterator iter(this, begin, end); | |
2809 bool have_one = false; | |
2810 while (iter.next()) { | |
2811 have_one = true; | |
2812 switch (iter.type()) { | |
2813 case relocInfo::none: return "no_reloc"; | |
2814 case relocInfo::oop_type: { | |
2815 stringStream st; | |
2816 oop_Relocation* r = iter.oop_reloc(); | |
2817 oop obj = r->oop_value(); | |
2818 st.print("oop("); | |
2819 if (obj == NULL) st.print("NULL"); | |
2820 else obj->print_value_on(&st); | |
2821 st.print(")"); | |
2822 return st.as_string(); | |
2823 } | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2824 case relocInfo::metadata_type: { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2825 stringStream st; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6266
diff
changeset
|
2826 metadata_Relocation* r = iter.metadata_reloc(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6266
diff
changeset
|
2827 Metadata* obj = r->metadata_value(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2828 st.print("metadata("); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6266
diff
changeset
|
2829 if (obj == NULL) st.print("NULL"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
2830 else obj->print_value_on(&st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6266
diff
changeset
|
2831 st.print(")"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2832 return st.as_string(); |
da91efe96a93
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diff
changeset
|
2833 } |
0 | 2834 case relocInfo::virtual_call_type: return "virtual_call"; |
2835 case relocInfo::opt_virtual_call_type: return "optimized virtual_call"; | |
2836 case relocInfo::static_call_type: return "static_call"; | |
2837 case relocInfo::static_stub_type: return "static_stub"; | |
2838 case relocInfo::runtime_call_type: return "runtime_call"; | |
2839 case relocInfo::external_word_type: return "external_word"; | |
2840 case relocInfo::internal_word_type: return "internal_word"; | |
2841 case relocInfo::section_word_type: return "section_word"; | |
2842 case relocInfo::poll_type: return "poll"; | |
2843 case relocInfo::poll_return_type: return "poll_return"; | |
2844 case relocInfo::type_mask: return "type_bit_mask"; | |
2845 } | |
2846 } | |
2847 return have_one ? "other" : NULL; | |
2848 } | |
2849 | |
2850 // Return a the last scope in (begin..end] | |
2851 ScopeDesc* nmethod::scope_desc_in(address begin, address end) { | |
2852 PcDesc* p = pc_desc_near(begin+1); | |
2853 if (p != NULL && p->real_pc(this) <= end) { | |
2854 return new ScopeDesc(this, p->scope_decode_offset(), | |
9707 | 2855 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
|
2856 p->return_oop()); |
0 | 2857 } |
2858 return NULL; | |
2859 } | |
2860 | |
6796
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
parents:
6792
diff
changeset
|
2861 void nmethod::print_nmethod_labels(outputStream* stream, address block_begin) const { |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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diff
changeset
|
2862 if (block_begin == entry_point()) stream->print_cr("[Entry Point]"); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
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diff
changeset
|
2863 if (block_begin == verified_entry_point()) stream->print_cr("[Verified Entry Point]"); |
9707 | 2864 if (GRAAL_ONLY(_exception_offset >= 0 &&) block_begin == exception_begin()) stream->print_cr("[Exception Handler]"); |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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1141
diff
changeset
|
2865 if (block_begin == stub_begin()) stream->print_cr("[Stub Code]"); |
9707 | 2866 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
|
2867 |
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
twisti
parents:
1644
diff
changeset
|
2868 if (has_method_handle_invokes()) |
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
twisti
parents:
1644
diff
changeset
|
2869 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
|
2870 |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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1141
diff
changeset
|
2871 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
|
2872 |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2873 if (block_begin == entry_point()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2874 methodHandle m = method(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2875 if (m.not_null()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2876 stream->print(" # "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2877 m->print_value_on(stream); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2878 stream->cr(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2879 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2880 if (m.not_null() && !is_osr_method()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2881 ResourceMark rm; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2882 int sizeargs = m->size_of_parameters(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2883 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
|
2884 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, sizeargs); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2885 { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2886 int sig_index = 0; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2887 if (!m->is_static()) |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2888 sig_bt[sig_index++] = T_OBJECT; // 'this' |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2889 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
|
2890 BasicType t = ss.type(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2891 sig_bt[sig_index++] = t; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2892 if (type2size[t] == 2) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2893 sig_bt[sig_index++] = T_VOID; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2894 } else { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2895 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
|
2896 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2897 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2898 assert(sig_index == sizeargs, ""); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2899 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2900 const char* spname = "sp"; // make arch-specific? |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2901 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
|
2902 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
|
2903 int tab1 = 14, tab2 = 24; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2904 int sig_index = 0; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2905 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
|
2906 bool did_old_sp = false; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2907 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
|
2908 bool at_this = (arg_index == -1); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2909 bool at_old_sp = false; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2910 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
|
2911 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
|
2912 if (at_this) |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2913 stream->print(" # this: "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2914 else |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2915 stream->print(" # parm%d: ", arg_index); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2916 stream->move_to(tab1); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2917 VMReg fst = regs[sig_index].first(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2918 VMReg snd = regs[sig_index].second(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2919 if (fst->is_reg()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2920 stream->print("%s", fst->name()); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2921 if (snd->is_valid()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2922 stream->print(":%s", snd->name()); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2923 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2924 } else if (fst->is_stack()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2925 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
|
2926 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
|
2927 stream->print("[%s+0x%x]", spname, offset); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2928 } else { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2929 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
|
2930 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2931 stream->print(" "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2932 stream->move_to(tab2); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2933 stream->print("= "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2934 if (at_this) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2935 m->method_holder()->print_value_on(stream); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2936 } else { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2937 bool did_name = false; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2938 if (!at_this && ss.is_object()) { |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2142
diff
changeset
|
2939 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
|
2940 if (name != NULL) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2941 name->print_value_on(stream); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2942 did_name = true; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2943 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2944 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2945 if (!did_name) |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2946 stream->print("%s", type2name(t)); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2947 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2948 if (at_old_sp) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2949 stream->print(" (%s of caller)", spname); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2950 did_old_sp = true; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2951 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2952 stream->cr(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2953 sig_index += type2size[t]; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2954 arg_index += 1; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2955 if (!at_this) ss.next(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2956 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2957 if (!did_old_sp) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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1141
diff
changeset
|
2958 stream->print(" # "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2959 stream->move_to(tab1); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2960 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
|
2961 stream->print(" (%s of caller)", spname); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2962 stream->cr(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2963 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2964 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2965 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2966 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2967 |
0 | 2968 void nmethod::print_code_comment_on(outputStream* st, int column, u_char* begin, u_char* end) { |
2969 // First, find an oopmap in (begin, end]. | |
2970 // We use the odd half-closed interval so that oop maps and scope descs | |
2971 // which are tied to the byte after a call are printed with the call itself. | |
1748 | 2972 address base = code_begin(); |
0 | 2973 OopMapSet* oms = oop_maps(); |
2974 if (oms != NULL) { | |
2975 for (int i = 0, imax = oms->size(); i < imax; i++) { | |
2976 OopMap* om = oms->at(i); | |
2977 address pc = base + om->offset(); | |
2978 if (pc > begin) { | |
2979 if (pc <= end) { | |
100
c7c777385a15
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parents:
30
diff
changeset
|
2980 st->move_to(column); |
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2981 st->print("; "); |
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2982 om->print_on(st); |
0 | 2983 } |
2984 break; | |
2985 } | |
2986 } | |
2987 } | |
100
c7c777385a15
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parents:
30
diff
changeset
|
2988 |
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
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parents:
30
diff
changeset
|
2989 // Print any debug info present at this pc. |
0 | 2990 ScopeDesc* sd = scope_desc_in(begin, end); |
2991 if (sd != NULL) { | |
100
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parents:
30
diff
changeset
|
2992 st->move_to(column); |
0 | 2993 if (sd->bci() == SynchronizationEntryBCI) { |
2994 st->print(";*synchronization entry"); | |
2995 } else { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2996 if (sd->method() == NULL) { |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
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30
diff
changeset
|
2997 st->print("method is NULL"); |
0 | 2998 } else if (sd->method()->is_native()) { |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
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parents:
30
diff
changeset
|
2999 st->print("method is native"); |
0 | 3000 } else { |
2142 | 3001 Bytecodes::Code bc = sd->method()->java_code_at(sd->bci()); |
0 | 3002 st->print(";*%s", Bytecodes::name(bc)); |
3003 switch (bc) { | |
3004 case Bytecodes::_invokevirtual: | |
3005 case Bytecodes::_invokespecial: | |
3006 case Bytecodes::_invokestatic: | |
3007 case Bytecodes::_invokeinterface: | |
3008 { | |
2142 | 3009 Bytecode_invoke invoke(sd->method(), sd->bci()); |
0 | 3010 st->print(" "); |
2142 | 3011 if (invoke.name() != NULL) |
3012 invoke.name()->print_symbol_on(st); | |
0 | 3013 else |
3014 st->print("<UNKNOWN>"); | |
3015 break; | |
3016 } | |
3017 case Bytecodes::_getfield: | |
3018 case Bytecodes::_putfield: | |
3019 case Bytecodes::_getstatic: | |
3020 case Bytecodes::_putstatic: | |
3021 { | |
2142 | 3022 Bytecode_field field(sd->method(), sd->bci()); |
0 | 3023 st->print(" "); |
2142 | 3024 if (field.name() != NULL) |
3025 field.name()->print_symbol_on(st); | |
0 | 3026 else |
3027 st->print("<UNKNOWN>"); | |
3028 } | |
3029 } | |
3030 } | |
3031 } | |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
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parents:
30
diff
changeset
|
3032 |
0 | 3033 // Print all scopes |
3034 for (;sd != NULL; sd = sd->sender()) { | |
100
c7c777385a15
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parents:
30
diff
changeset
|
3035 st->move_to(column); |
0 | 3036 st->print("; -"); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3037 if (sd->method() == NULL) { |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
3038 st->print("method is NULL"); |
0 | 3039 } else { |
3040 sd->method()->print_short_name(st); | |
3041 } | |
3042 int lineno = sd->method()->line_number_from_bci(sd->bci()); | |
3043 if (lineno != -1) { | |
3044 st->print("@%d (line %d)", sd->bci(), lineno); | |
3045 } else { | |
3046 st->print("@%d", sd->bci()); | |
3047 } | |
3048 st->cr(); | |
3049 } | |
3050 } | |
3051 | |
3052 // Print relocation information | |
3053 const char* str = reloc_string_for(begin, end); | |
3054 if (str != NULL) { | |
3055 if (sd != NULL) st->cr(); | |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
3056 st->move_to(column); |
0 | 3057 st->print("; {%s}", str); |
3058 } | |
1748 | 3059 int cont_offset = ImplicitExceptionTable(this).at(begin - code_begin()); |
0 | 3060 if (cont_offset != 0) { |
100
c7c777385a15
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30
diff
changeset
|
3061 st->move_to(column); |
1748 | 3062 st->print("; implicit exception: dispatches to " INTPTR_FORMAT, code_begin() + cont_offset); |
0 | 3063 } |
3064 | |
3065 } | |
3066 | |
100
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6667042: PrintAssembly option does not work without special plugin
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parents:
30
diff
changeset
|
3067 #ifndef PRODUCT |
c7c777385a15
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diff
changeset
|
3068 |
0 | 3069 void nmethod::print_value_on(outputStream* st) const { |
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2376
diff
changeset
|
3070 st->print("nmethod"); |
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2376
diff
changeset
|
3071 print_on(st, NULL); |
0 | 3072 } |
3073 | |
3074 void nmethod::print_calls(outputStream* st) { | |
3075 RelocIterator iter(this); | |
3076 while (iter.next()) { | |
3077 switch (iter.type()) { | |
3078 case relocInfo::virtual_call_type: | |
3079 case relocInfo::opt_virtual_call_type: { | |
3080 VerifyMutexLocker mc(CompiledIC_lock); | |
3081 CompiledIC_at(iter.reloc())->print(); | |
3082 break; | |
3083 } | |
3084 case relocInfo::static_call_type: | |
3085 st->print_cr("Static call at " INTPTR_FORMAT, iter.reloc()->addr()); | |
3086 compiledStaticCall_at(iter.reloc())->print(); | |
3087 break; | |
3088 } | |
3089 } | |
3090 } | |
3091 | |
3092 void nmethod::print_handler_table() { | |
3093 ExceptionHandlerTable(this).print(); | |
3094 } | |
3095 | |
3096 void nmethod::print_nul_chk_table() { | |
1748 | 3097 ImplicitExceptionTable(this).print(code_begin()); |
0 | 3098 } |
14733
b10e42998d01
nmethod: fix -XX:+PrintNMethodStatistics
Bernhard Urban <bernhard.urban@jku.at>
parents:
14726
diff
changeset
|
3099 #endif // PRODUCT |
0 | 3100 |
3101 void nmethod::print_statistics() { | |
3102 ttyLocker ttyl; | |
3103 if (xtty != NULL) xtty->head("statistics type='nmethod'"); | |
12675
7fedc59e2cdc
Split code cache stats for the different compilers
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12414
diff
changeset
|
3104 native_nmethod_stats.print_native_nmethod_stats(); |
7fedc59e2cdc
Split code cache stats for the different compilers
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12414
diff
changeset
|
3105 #ifdef COMPILER1 |
7fedc59e2cdc
Split code cache stats for the different compilers
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12414
diff
changeset
|
3106 c1_java_nmethod_stats.print_nmethod_stats("C1"); |
7fedc59e2cdc
Split code cache stats for the different compilers
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12414
diff
changeset
|
3107 #endif |
7fedc59e2cdc
Split code cache stats for the different compilers
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12414
diff
changeset
|
3108 #ifdef COMPILER2 |
7fedc59e2cdc
Split code cache stats for the different compilers
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12414
diff
changeset
|
3109 c2_java_nmethod_stats.print_nmethod_stats("C2"); |
7fedc59e2cdc
Split code cache stats for the different compilers
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12414
diff
changeset
|
3110 #endif |
7fedc59e2cdc
Split code cache stats for the different compilers
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12414
diff
changeset
|
3111 #ifdef GRAAL |
7fedc59e2cdc
Split code cache stats for the different compilers
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12414
diff
changeset
|
3112 graal_java_nmethod_stats.print_nmethod_stats("Graal"); |
7fedc59e2cdc
Split code cache stats for the different compilers
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12414
diff
changeset
|
3113 #endif |
15434
7461c3bf278a
Improve PrintNMethodStatistics output: add Shark compiler and metadata size. Properly record nmethods for native wrapper.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
15164
diff
changeset
|
3114 #ifdef SHARK |
7461c3bf278a
Improve PrintNMethodStatistics output: add Shark compiler and metadata size. Properly record nmethods for native wrapper.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
15164
diff
changeset
|
3115 shark_java_nmethod_stats.print_nmethod_stats("Shark"); |
7461c3bf278a
Improve PrintNMethodStatistics output: add Shark compiler and metadata size. Properly record nmethods for native wrapper.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
15164
diff
changeset
|
3116 #endif |
12758
ca33948fb804
nmethod.cpp: s/unknwon/unknown/
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12704
diff
changeset
|
3117 unknown_java_nmethod_stats.print_nmethod_stats("Unknown"); |
0 | 3118 DebugInformationRecorder::print_statistics(); |
15434
7461c3bf278a
Improve PrintNMethodStatistics output: add Shark compiler and metadata size. Properly record nmethods for native wrapper.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
15164
diff
changeset
|
3119 #ifndef PRODUCT |
12675
7fedc59e2cdc
Split code cache stats for the different compilers
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12414
diff
changeset
|
3120 pc_nmethod_stats.print_pc_stats(); |
15434
7461c3bf278a
Improve PrintNMethodStatistics output: add Shark compiler and metadata size. Properly record nmethods for native wrapper.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
15164
diff
changeset
|
3121 #endif |
0 | 3122 Dependencies::print_statistics(); |
3123 if (xtty != NULL) xtty->tail("statistics"); | |
3124 } |