Mercurial > hg > graal-compiler
annotate src/share/vm/code/nmethod.cpp @ 18125:2a69cbe850a8
Reduce diff with upstream
author | Gilles Duboscq <duboscq@ssw.jku.at> |
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date | Mon, 20 Oct 2014 19:07:20 +0200 |
parents | 52b4284cb496 |
children | dcfdd60edaf1 |
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 |
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668 nm = new (nmethod_size) |
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669 nmethod(method(), nmethod_size, compile_id, entry_bci, offsets, |
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670 orig_pc_offset, debug_info, dependencies, code_buffer, frame_size, |
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671 oop_maps, |
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672 handler_table, |
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673 nul_chk_table, |
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674 compiler, |
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675 comp_level |
9707 | 676 #ifdef GRAAL |
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677 , installed_code, |
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678 speculationLog |
9707 | 679 #endif |
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680 ); |
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681 |
0 | 682 if (nm != NULL) { |
683 // To make dependency checking during class loading fast, record | |
684 // the nmethod dependencies in the classes it is dependent on. | |
685 // This allows the dependency checking code to simply walk the | |
686 // class hierarchy above the loaded class, checking only nmethods | |
687 // which are dependent on those classes. The slow way is to | |
688 // check every nmethod for dependencies which makes it linear in | |
689 // the number of methods compiled. For applications with a lot | |
690 // classes the slow way is too slow. | |
691 for (Dependencies::DepStream deps(nm); deps.next(); ) { | |
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692 Klass* klass = deps.context_type(); |
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693 if (klass == NULL) { |
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694 continue; // ignore things like evol_method |
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695 } |
0 | 696 |
697 // record this nmethod as dependent on this klass | |
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698 InstanceKlass::cast(klass)->add_dependent_nmethod(nm); |
0 | 699 } |
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700 if (nm != NULL) note_java_nmethod(nm); |
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701 if (PrintAssembly || CompilerOracle::has_option_string(method, "PrintAssembly")) { |
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702 Disassembler::decode(nm); |
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703 } |
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704 } |
0 | 705 } |
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706 // Do verification and logging outside CodeCache_lock. |
0 | 707 if (nm != NULL) { |
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708 // Safepoints in nmethod::verify aren't allowed because nm hasn't been installed yet. |
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709 DEBUG_ONLY(nm->verify();) |
0 | 710 nm->log_new_nmethod(); |
711 } | |
712 return nm; | |
713 } | |
714 | |
715 | |
716 // For native wrappers | |
717 nmethod::nmethod( | |
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718 Method* method, |
0 | 719 int nmethod_size, |
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720 int compile_id, |
0 | 721 CodeOffsets* offsets, |
722 CodeBuffer* code_buffer, | |
723 int frame_size, | |
724 ByteSize basic_lock_owner_sp_offset, | |
725 ByteSize basic_lock_sp_offset, | |
726 OopMapSet* oop_maps ) | |
727 : CodeBlob("native nmethod", code_buffer, sizeof(nmethod), | |
728 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, oop_maps), | |
2019 | 729 _native_receiver_sp_offset(basic_lock_owner_sp_offset), |
730 _native_basic_lock_sp_offset(basic_lock_sp_offset) | |
0 | 731 { |
732 { | |
733 debug_only(No_Safepoint_Verifier nsv;) | |
734 assert_locked_or_safepoint(CodeCache_lock); | |
735 | |
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736 init_defaults(); |
0 | 737 _method = method; |
738 _entry_bci = InvocationEntryBci; | |
739 // We have no exception handler or deopt handler make the | |
740 // values something that will never match a pc like the nmethod vtable entry | |
741 _exception_offset = 0; | |
742 _deoptimize_offset = 0; | |
1204 | 743 _deoptimize_mh_offset = 0; |
0 | 744 _orig_pc_offset = 0; |
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745 |
1748 | 746 _consts_offset = data_offset(); |
0 | 747 _stub_offset = data_offset(); |
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748 _oops_offset = data_offset(); |
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749 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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750 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
0 | 751 _scopes_pcs_offset = _scopes_data_offset; |
752 _dependencies_offset = _scopes_pcs_offset; | |
753 _handler_table_offset = _dependencies_offset; | |
754 _nul_chk_table_offset = _handler_table_offset; | |
755 _nmethod_end_offset = _nul_chk_table_offset; | |
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756 _compile_id = compile_id; |
0 | 757 _comp_level = CompLevel_none; |
1748 | 758 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
759 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
0 | 760 _osr_entry_point = NULL; |
761 _exception_cache = NULL; | |
762 _pc_desc_cache.reset_to(NULL); | |
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763 _hotness_counter = NMethodSweeper::hotness_counter_reset_val(); |
0 | 764 |
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765 code_buffer->copy_values_to(this); |
2376
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766 if (ScavengeRootsInCode && detect_scavenge_root_oops()) { |
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767 CodeCache::add_scavenge_root_nmethod(this); |
12080 | 768 Universe::heap()->register_nmethod(this); |
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769 } |
989
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770 debug_only(verify_scavenge_root_oops()); |
0 | 771 CodeCache::commit(this); |
772 } | |
773 | |
774 if (PrintNativeNMethods || PrintDebugInfo || PrintRelocations || PrintDependencies) { | |
775 ttyLocker ttyl; // keep the following output all in one block | |
776 // This output goes directly to the tty, not the compiler log. | |
777 // To enable tools to match it up with the compilation activity, | |
778 // be sure to tag this tty output with the compile ID. | |
779 if (xtty != NULL) { | |
780 xtty->begin_head("print_native_nmethod"); | |
781 xtty->method(_method); | |
782 xtty->stamp(); | |
783 xtty->end_head(" address='" INTPTR_FORMAT "'", (intptr_t) this); | |
784 } | |
785 // print the header part first | |
786 print(); | |
787 // then print the requested information | |
788 if (PrintNativeNMethods) { | |
789 print_code(); | |
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790 if (oop_maps != NULL) { |
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791 oop_maps->print(); |
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792 } |
0 | 793 } |
794 if (PrintRelocations) { | |
795 print_relocations(); | |
796 } | |
797 if (xtty != NULL) { | |
798 xtty->tail("print_native_nmethod"); | |
799 } | |
800 } | |
801 } | |
802 | |
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803 // For dtrace wrappers |
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804 #ifdef HAVE_DTRACE_H |
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805 nmethod::nmethod( |
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806 Method* method, |
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807 int nmethod_size, |
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808 CodeOffsets* offsets, |
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809 CodeBuffer* code_buffer, |
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810 int frame_size) |
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811 : CodeBlob("dtrace nmethod", code_buffer, sizeof(nmethod), |
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812 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, NULL), |
2019 | 813 _native_receiver_sp_offset(in_ByteSize(-1)), |
814 _native_basic_lock_sp_offset(in_ByteSize(-1)) | |
116
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815 { |
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816 { |
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817 debug_only(No_Safepoint_Verifier nsv;) |
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818 assert_locked_or_safepoint(CodeCache_lock); |
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819 |
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820 init_defaults(); |
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821 _method = method; |
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822 _entry_bci = InvocationEntryBci; |
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823 // We have no exception handler or deopt handler make the |
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824 // values something that will never match a pc like the nmethod vtable entry |
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825 _exception_offset = 0; |
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826 _deoptimize_offset = 0; |
1204 | 827 _deoptimize_mh_offset = 0; |
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828 _unwind_handler_offset = -1; |
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829 _trap_offset = offsets->value(CodeOffsets::Dtrace_trap); |
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830 _orig_pc_offset = 0; |
1748 | 831 _consts_offset = data_offset(); |
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832 _stub_offset = data_offset(); |
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833 _oops_offset = data_offset(); |
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834 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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835 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
116
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836 _scopes_pcs_offset = _scopes_data_offset; |
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837 _dependencies_offset = _scopes_pcs_offset; |
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838 _handler_table_offset = _dependencies_offset; |
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839 _nul_chk_table_offset = _handler_table_offset; |
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840 _nmethod_end_offset = _nul_chk_table_offset; |
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841 _compile_id = 0; // default |
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842 _comp_level = CompLevel_none; |
1748 | 843 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
844 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
116
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845 _osr_entry_point = NULL; |
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846 _exception_cache = NULL; |
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847 _pc_desc_cache.reset_to(NULL); |
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848 _hotness_counter = NMethodSweeper::hotness_counter_reset_val(); |
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849 |
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850 code_buffer->copy_values_to(this); |
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851 if (ScavengeRootsInCode && detect_scavenge_root_oops()) { |
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852 CodeCache::add_scavenge_root_nmethod(this); |
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853 Universe::heap()->register_nmethod(this); |
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854 } |
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855 DEBUG_ONLY(verify_scavenge_root_oops();) |
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856 CodeCache::commit(this); |
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857 } |
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858 |
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859 if (PrintNMethods || PrintDebugInfo || PrintRelocations || PrintDependencies) { |
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860 ttyLocker ttyl; // keep the following output all in one block |
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861 // This output goes directly to the tty, not the compiler log. |
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862 // To enable tools to match it up with the compilation activity, |
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863 // be sure to tag this tty output with the compile ID. |
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864 if (xtty != NULL) { |
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865 xtty->begin_head("print_dtrace_nmethod"); |
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866 xtty->method(_method); |
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867 xtty->stamp(); |
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868 xtty->end_head(" address='" INTPTR_FORMAT "'", (intptr_t) this); |
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869 } |
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870 // print the header part first |
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871 print(); |
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872 // then print the requested information |
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873 if (PrintNMethods) { |
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874 print_code(); |
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875 } |
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876 if (PrintRelocations) { |
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877 print_relocations(); |
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878 } |
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879 if (xtty != NULL) { |
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880 xtty->tail("print_dtrace_nmethod"); |
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881 } |
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882 } |
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883 } |
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884 #endif // def HAVE_DTRACE_H |
0 | 885 |
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886 void* nmethod::operator new(size_t size, int nmethod_size) throw() { |
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887 // Not critical, may return null if there is too little continuous memory |
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888 return CodeCache::allocate(nmethod_size); |
0 | 889 } |
890 | |
891 nmethod::nmethod( | |
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892 Method* method, |
0 | 893 int nmethod_size, |
894 int compile_id, | |
895 int entry_bci, | |
896 CodeOffsets* offsets, | |
897 int orig_pc_offset, | |
898 DebugInformationRecorder* debug_info, | |
899 Dependencies* dependencies, | |
900 CodeBuffer *code_buffer, | |
901 int frame_size, | |
902 OopMapSet* oop_maps, | |
903 ExceptionHandlerTable* handler_table, | |
904 ImplicitExceptionTable* nul_chk_table, | |
905 AbstractCompiler* compiler, | |
906 int comp_level | |
9707 | 907 #ifdef GRAAL |
908 , Handle installed_code, | |
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909 Handle speculation_log |
9707 | 910 #endif |
0 | 911 ) |
912 : CodeBlob("nmethod", code_buffer, sizeof(nmethod), | |
913 nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, oop_maps), | |
2019 | 914 _native_receiver_sp_offset(in_ByteSize(-1)), |
915 _native_basic_lock_sp_offset(in_ByteSize(-1)) | |
0 | 916 { |
917 assert(debug_info->oop_recorder() == code_buffer->oop_recorder(), "shared OR"); | |
918 { | |
919 debug_only(No_Safepoint_Verifier nsv;) | |
920 assert_locked_or_safepoint(CodeCache_lock); | |
921 | |
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922 init_defaults(); |
0 | 923 _method = method; |
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924 _entry_bci = entry_bci; |
0 | 925 _compile_id = compile_id; |
926 _comp_level = comp_level; | |
927 _compiler = compiler; | |
928 _orig_pc_offset = orig_pc_offset; | |
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929 _hotness_counter = NMethodSweeper::hotness_counter_reset_val(); |
1748 | 930 |
931 // Section offsets | |
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932 _consts_offset = content_offset() + code_buffer->total_offset_of(code_buffer->consts()); |
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933 _stub_offset = content_offset() + code_buffer->total_offset_of(code_buffer->stubs()); |
0 | 934 |
9707 | 935 #ifdef GRAAL |
936 _graal_installed_code = installed_code(); | |
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937 _speculation_log = (instanceOop)speculation_log(); |
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938 |
9707 | 939 if (compiler->is_graal()) { |
940 // Graal might not produce any stub sections | |
941 if (offsets->value(CodeOffsets::Exceptions) != -1) { | |
942 _exception_offset = code_offset() + offsets->value(CodeOffsets::Exceptions); | |
943 } else { | |
944 _exception_offset = -1; | |
945 } | |
946 if (offsets->value(CodeOffsets::Deopt) != -1) { | |
947 _deoptimize_offset = code_offset() + offsets->value(CodeOffsets::Deopt); | |
948 } else { | |
949 _deoptimize_offset = -1; | |
950 } | |
951 if (offsets->value(CodeOffsets::DeoptMH) != -1) { | |
952 _deoptimize_mh_offset = code_offset() + offsets->value(CodeOffsets::DeoptMH); | |
953 } else { | |
954 _deoptimize_mh_offset = -1; | |
955 } | |
1762
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956 } else { |
18125
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957 #endif |
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958 // Exception handler and deopt handler are in the stub section |
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959 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must be set"); |
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960 assert(offsets->value(CodeOffsets::Deopt ) != -1, "must be set"); |
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961 |
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962 _exception_offset = _stub_offset + offsets->value(CodeOffsets::Exceptions); |
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963 _deoptimize_offset = _stub_offset + offsets->value(CodeOffsets::Deopt); |
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964 if (offsets->value(CodeOffsets::DeoptMH) != -1) { |
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965 _deoptimize_mh_offset = _stub_offset + offsets->value(CodeOffsets::DeoptMH); |
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966 } else { |
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967 _deoptimize_mh_offset = -1; |
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968 #ifdef GRAAL |
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969 } |
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970 #endif |
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971 } |
1378
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972 if (offsets->value(CodeOffsets::UnwindHandler) != -1) { |
1748 | 973 _unwind_handler_offset = code_offset() + offsets->value(CodeOffsets::UnwindHandler); |
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974 } else { |
1748 | 975 _unwind_handler_offset = -1; |
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976 } |
1748 | 977 |
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978 _oops_offset = data_offset(); |
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979 _metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize); |
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980 _scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize); |
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981 |
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982 _scopes_pcs_offset = _scopes_data_offset + round_to(debug_info->data_size (), oopSize); |
0 | 983 _dependencies_offset = _scopes_pcs_offset + adjust_pcs_size(debug_info->pcs_size()); |
984 _handler_table_offset = _dependencies_offset + round_to(dependencies->size_in_bytes (), oopSize); | |
985 _nul_chk_table_offset = _handler_table_offset + round_to(handler_table->size_in_bytes(), oopSize); | |
986 _nmethod_end_offset = _nul_chk_table_offset + round_to(nul_chk_table->size_in_bytes(), oopSize); | |
987 | |
1748 | 988 _entry_point = code_begin() + offsets->value(CodeOffsets::Entry); |
989 _verified_entry_point = code_begin() + offsets->value(CodeOffsets::Verified_Entry); | |
990 _osr_entry_point = code_begin() + offsets->value(CodeOffsets::OSR_Entry); | |
0 | 991 _exception_cache = NULL; |
992 _pc_desc_cache.reset_to(scopes_pcs_begin()); | |
993 | |
994 // Copy contents of ScopeDescRecorder to nmethod | |
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995 code_buffer->copy_values_to(this); |
0 | 996 debug_info->copy_to(this); |
997 dependencies->copy_to(this); | |
989
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998 if (ScavengeRootsInCode && detect_scavenge_root_oops()) { |
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999 CodeCache::add_scavenge_root_nmethod(this); |
12080 | 1000 Universe::heap()->register_nmethod(this); |
989
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1001 } |
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1002 debug_only(verify_scavenge_root_oops()); |
0 | 1003 |
1004 CodeCache::commit(this); | |
1005 | |
1006 // Copy contents of ExceptionHandlerTable to nmethod | |
1007 handler_table->copy_to(this); | |
1008 nul_chk_table->copy_to(this); | |
1009 | |
1010 // we use the information of entry points to find out if a method is | |
1011 // static or non static | |
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1012 assert(compiler->is_c2() || compiler->is_graal() || |
0 | 1013 _method->is_static() == (entry_point() == _verified_entry_point), |
1014 " entry points must be same for static methods and vice versa"); | |
1015 } | |
1016 | |
100
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1017 bool printnmethods = PrintNMethods |
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1018 || CompilerOracle::should_print(_method) |
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1019 || CompilerOracle::has_option_string(_method, "PrintNMethods"); |
0 | 1020 if (printnmethods || PrintDebugInfo || PrintRelocations || PrintDependencies || PrintExceptionHandlers) { |
1021 print_nmethod(printnmethods); | |
1022 } | |
1023 } | |
1024 | |
1025 | |
1026 // Print a short set of xml attributes to identify this nmethod. The | |
1027 // output should be embedded in some other element. | |
1028 void nmethod::log_identity(xmlStream* log) const { | |
1029 log->print(" compile_id='%d'", compile_id()); | |
1030 const char* nm_kind = compile_kind(); | |
1031 if (nm_kind != NULL) log->print(" compile_kind='%s'", nm_kind); | |
1032 if (compiler() != NULL) { | |
1033 log->print(" compiler='%s'", compiler()->name()); | |
1034 } | |
1783 | 1035 if (TieredCompilation) { |
1036 log->print(" level='%d'", comp_level()); | |
1037 } | |
0 | 1038 } |
1039 | |
1040 | |
1041 #define LOG_OFFSET(log, name) \ | |
1042 if ((intptr_t)name##_end() - (intptr_t)name##_begin()) \ | |
1043 log->print(" " XSTR(name) "_offset='%d'" , \ | |
1044 (intptr_t)name##_begin() - (intptr_t)this) | |
1045 | |
1046 | |
1047 void nmethod::log_new_nmethod() const { | |
1048 if (LogCompilation && xtty != NULL) { | |
1049 ttyLocker ttyl; | |
1050 HandleMark hm; | |
1051 xtty->begin_elem("nmethod"); | |
1052 log_identity(xtty); | |
1748 | 1053 xtty->print(" entry='" INTPTR_FORMAT "' size='%d'", code_begin(), size()); |
0 | 1054 xtty->print(" address='" INTPTR_FORMAT "'", (intptr_t) this); |
1055 | |
1056 LOG_OFFSET(xtty, relocation); | |
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1057 LOG_OFFSET(xtty, consts); |
1748 | 1058 LOG_OFFSET(xtty, insts); |
0 | 1059 LOG_OFFSET(xtty, stub); |
1060 LOG_OFFSET(xtty, scopes_data); | |
1061 LOG_OFFSET(xtty, scopes_pcs); | |
1062 LOG_OFFSET(xtty, dependencies); | |
1063 LOG_OFFSET(xtty, handler_table); | |
1064 LOG_OFFSET(xtty, nul_chk_table); | |
1065 LOG_OFFSET(xtty, oops); | |
18041 | 1066 LOG_OFFSET(xtty, metadata); |
0 | 1067 |
1068 xtty->method(method()); | |
1069 xtty->stamp(); | |
1070 xtty->end_elem(); | |
1071 } | |
1072 } | |
1073 | |
1074 #undef LOG_OFFSET | |
1075 | |
1076 | |
1077 // Print out more verbose output usually for a newly created nmethod. | |
2405
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1078 void nmethod::print_on(outputStream* st, const char* msg) const { |
0 | 1079 if (st != NULL) { |
1080 ttyLocker ttyl; | |
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1081 if (WizardMode) { |
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1082 CompileTask::print_compilation(st, this, msg, /*short_form:*/ true); |
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1083 st->print_cr(" (" INTPTR_FORMAT ")", this); |
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1084 } else { |
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1085 CompileTask::print_compilation(st, this, msg, /*short_form:*/ false); |
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1086 } |
0 | 1087 } |
1088 } | |
1089 | |
1090 | |
1091 void nmethod::print_nmethod(bool printmethod) { | |
1092 ttyLocker ttyl; // keep the following output all in one block | |
1093 if (xtty != NULL) { | |
1094 xtty->begin_head("print_nmethod"); | |
1095 xtty->stamp(); | |
1096 xtty->end_head(); | |
1097 } | |
1098 // print the header part first | |
1099 print(); | |
1100 // then print the requested information | |
1101 if (printmethod) { | |
1102 print_code(); | |
1103 print_pcs(); | |
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1104 if (oop_maps()) { |
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1105 oop_maps()->print(); |
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1106 } |
0 | 1107 } |
1108 if (PrintDebugInfo) { | |
1109 print_scopes(); | |
1110 } | |
1111 if (PrintRelocations) { | |
1112 print_relocations(); | |
1113 } | |
1114 if (PrintDependencies) { | |
1115 print_dependencies(); | |
1116 } | |
1117 if (PrintExceptionHandlers) { | |
1118 print_handler_table(); | |
1119 print_nul_chk_table(); | |
1120 } | |
1121 if (xtty != NULL) { | |
1122 xtty->tail("print_nmethod"); | |
1123 } | |
1124 } | |
1125 | |
1126 | |
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1127 // Promote one word from an assembly-time handle to a live embedded oop. |
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1128 inline void nmethod::initialize_immediate_oop(oop* dest, jobject handle) { |
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1129 if (handle == NULL || |
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1130 // As a special case, IC oops are initialized to 1 or -1. |
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1131 handle == (jobject) Universe::non_oop_word()) { |
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1132 (*dest) = (oop) handle; |
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1133 } else { |
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1134 (*dest) = JNIHandles::resolve_non_null(handle); |
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1135 } |
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1136 } |
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1137 |
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1138 |
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1139 // Have to have the same name because it's called by a template |
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1140 void nmethod::copy_values(GrowableArray<jobject>* array) { |
1563
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1141 int length = array->length(); |
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1142 assert((address)(oops_begin() + length) <= (address)oops_end(), "oops big enough"); |
1563
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1143 oop* dest = oops_begin(); |
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1144 for (int index = 0 ; index < length; index++) { |
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1145 initialize_immediate_oop(&dest[index], array->at(index)); |
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1146 } |
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1147 |
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1148 // Now we can fix up all the oops in the code. We need to do this |
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1149 // in the code because the assembler uses jobjects as placeholders. |
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1150 // The code and relocations have already been initialized by the |
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1151 // CodeBlob constructor, so it is valid even at this early point to |
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1152 // iterate over relocations and patch the code. |
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1153 fix_oop_relocations(NULL, NULL, /*initialize_immediates=*/ true); |
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1154 } |
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1155 |
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1156 void nmethod::copy_values(GrowableArray<Metadata*>* array) { |
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1157 int length = array->length(); |
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1158 assert((address)(metadata_begin() + length) <= (address)metadata_end(), "big enough"); |
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1159 Metadata** dest = metadata_begin(); |
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1160 for (int index = 0 ; index < length; index++) { |
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1161 dest[index] = array->at(index); |
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1162 } |
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1163 } |
1563
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1164 |
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1165 bool nmethod::is_at_poll_return(address pc) { |
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1166 RelocIterator iter(this, pc, pc+1); |
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1167 while (iter.next()) { |
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1168 if (iter.type() == relocInfo::poll_return_type) |
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1169 return true; |
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1170 } |
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1171 return false; |
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1172 } |
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1173 |
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1174 |
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1175 bool nmethod::is_at_poll_or_poll_return(address pc) { |
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1176 RelocIterator iter(this, pc, pc+1); |
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1177 while (iter.next()) { |
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1178 relocInfo::relocType t = iter.type(); |
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1179 if (t == relocInfo::poll_return_type || t == relocInfo::poll_type) |
1a5913bf5e19
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|
1180 return true; |
1a5913bf5e19
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diff
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|
1181 } |
1a5913bf5e19
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diff
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|
1182 return false; |
1a5913bf5e19
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|
1183 } |
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|
1184 |
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|
1185 |
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|
1186 void nmethod::fix_oop_relocations(address begin, address end, bool initialize_immediates) { |
1a5913bf5e19
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1187 // re-patch all oop-bearing instructions, just in case some oops moved |
1a5913bf5e19
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1188 RelocIterator iter(this, begin, end); |
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1189 while (iter.next()) { |
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1190 if (iter.type() == relocInfo::oop_type) { |
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diff
changeset
|
1191 oop_Relocation* reloc = iter.oop_reloc(); |
1a5913bf5e19
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1192 if (initialize_immediates && reloc->oop_is_immediate()) { |
1a5913bf5e19
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diff
changeset
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1193 oop* dest = reloc->oop_addr(); |
1a5913bf5e19
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twisti
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diff
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|
1194 initialize_immediate_oop(dest, (jobject) *dest); |
1a5913bf5e19
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diff
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|
1195 } |
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diff
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|
1196 // Refresh the oop-related bits of this instruction. |
1a5913bf5e19
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diff
changeset
|
1197 reloc->fix_oop_relocation(); |
6725
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6266
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1198 } else if (iter.type() == relocInfo::metadata_type) { |
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coleenp
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1199 metadata_Relocation* reloc = iter.metadata_reloc(); |
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|
1200 reloc->fix_metadata_relocation(); |
1563
1a5913bf5e19
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|
1201 } |
1a5913bf5e19
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|
1202 } |
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|
1203 } |
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|
1204 |
1a5913bf5e19
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twisti
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diff
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|
1205 |
2375
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
2360
diff
changeset
|
1206 void nmethod::verify_oop_relocations() { |
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
2360
diff
changeset
|
1207 // 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
|
1208 RelocIterator iter(this, NULL, NULL); |
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
2360
diff
changeset
|
1209 while (iter.next()) { |
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
2360
diff
changeset
|
1210 if (iter.type() == relocInfo::oop_type) { |
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
2360
diff
changeset
|
1211 oop_Relocation* reloc = iter.oop_reloc(); |
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
2360
diff
changeset
|
1212 if (!reloc->oop_is_immediate()) { |
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
2360
diff
changeset
|
1213 reloc->verify_oop_relocation(); |
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
2360
diff
changeset
|
1214 } |
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
2360
diff
changeset
|
1215 } |
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
2360
diff
changeset
|
1216 } |
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
2360
diff
changeset
|
1217 } |
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
2360
diff
changeset
|
1218 |
d673ef06fe96
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
2360
diff
changeset
|
1219 |
0 | 1220 ScopeDesc* nmethod::scope_desc_at(address pc) { |
1221 PcDesc* pd = pc_desc_at(pc); | |
1222 guarantee(pd != NULL, "scope must be present"); | |
1223 return new ScopeDesc(this, pd->scope_decode_offset(), | |
9707 | 1224 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
|
1225 pd->return_oop()); |
0 | 1226 } |
1227 | |
1228 | |
1229 void nmethod::clear_inline_caches() { | |
1230 assert(SafepointSynchronize::is_at_safepoint(), "cleaning of IC's only allowed at safepoint"); | |
1231 if (is_zombie()) { | |
1232 return; | |
1233 } | |
1234 | |
1235 RelocIterator iter(this); | |
1236 while (iter.next()) { | |
1237 iter.reloc()->clear_inline_cache(); | |
1238 } | |
1239 } | |
1240 | |
1241 | |
1242 void nmethod::cleanup_inline_caches() { | |
1243 | |
1538
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1490
diff
changeset
|
1244 assert_locked_or_safepoint(CompiledIC_lock); |
0 | 1245 |
1246 // If the method is not entrant or zombie then a JMP is plastered over the | |
1247 // first few bytes. If an oop in the old code was there, that oop | |
1248 // should not get GC'd. Skip the first few bytes of oops on | |
1249 // not-entrant methods. | |
1250 address low_boundary = verified_entry_point(); | |
1251 if (!is_in_use()) { | |
1252 low_boundary += NativeJump::instruction_size; | |
1253 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
1254 // This means that the low_boundary is going to be a little too high. | |
1255 // This shouldn't matter, since oops of non-entrant methods are never used. | |
1256 // In fact, why are we bothering to look at oops in a non-entrant method?? | |
1257 } | |
1258 | |
1259 // Find all calls in an nmethod, and clear the ones that points to zombie methods | |
1260 ResourceMark rm; | |
1261 RelocIterator iter(this, low_boundary); | |
1262 while(iter.next()) { | |
1263 switch(iter.type()) { | |
1264 case relocInfo::virtual_call_type: | |
1265 case relocInfo::opt_virtual_call_type: { | |
1266 CompiledIC *ic = CompiledIC_at(iter.reloc()); | |
1267 // Ok, to lookup references to zombies here | |
1268 CodeBlob *cb = CodeCache::find_blob_unsafe(ic->ic_destination()); | |
1269 if( cb != NULL && cb->is_nmethod() ) { | |
1270 nmethod* nm = (nmethod*)cb; | |
1271 // Clean inline caches pointing to both zombie and not_entrant methods | |
1202 | 1272 if (!nm->is_in_use() || (nm->method()->code() != nm)) ic->set_to_clean(); |
0 | 1273 } |
1274 break; | |
1275 } | |
1276 case relocInfo::static_call_type: { | |
1277 CompiledStaticCall *csc = compiledStaticCall_at(iter.reloc()); | |
1278 CodeBlob *cb = CodeCache::find_blob_unsafe(csc->destination()); | |
1279 if( cb != NULL && cb->is_nmethod() ) { | |
1280 nmethod* nm = (nmethod*)cb; | |
1281 // Clean inline caches pointing to both zombie and not_entrant methods | |
1202 | 1282 if (!nm->is_in_use() || (nm->method()->code() != nm)) csc->set_to_clean(); |
0 | 1283 } |
1284 break; | |
1285 } | |
1286 } | |
1287 } | |
1288 } | |
1289 | |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1290 // This is a private interface with the sweeper. |
0 | 1291 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
|
1292 assert(is_alive(), "Must be an alive method"); |
1644
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1293 // Set the traversal mark to ensure that the sweeper does 2 |
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1294 // cleaning passes before moving to zombie. |
0 | 1295 set_stack_traversal_mark(NMethodSweeper::traversal_count()); |
1296 } | |
1297 | |
2342
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2321
diff
changeset
|
1298 // 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:
2321
diff
changeset
|
1299 // there are no activations on the stack, not in use by the VM, |
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2321
diff
changeset
|
1300 // and not in use by the ServiceThread) |
0 | 1301 bool nmethod::can_not_entrant_be_converted() { |
1302 assert(is_not_entrant(), "must be a non-entrant method"); | |
1303 | |
1304 // Since the nmethod sweeper only does partial sweep the sweeper's traversal | |
1305 // count can be greater than the stack traversal count before it hits the | |
1306 // nmethod for the second time. | |
2342
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2321
diff
changeset
|
1307 return stack_traversal_mark()+1 < NMethodSweeper::traversal_count() && |
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2321
diff
changeset
|
1308 !is_locked_by_vm(); |
0 | 1309 } |
1310 | |
1311 void nmethod::inc_decompile_count() { | |
9707 | 1312 if (!is_compiled_by_c2() && !is_compiled_by_graal()) return; |
0 | 1313 // Could be gated by ProfileTraps, but do not bother... |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1314 Method* m = method(); |
0 | 1315 if (m == NULL) return; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1316 MethodData* mdo = m->method_data(); |
0 | 1317 if (mdo == NULL) return; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1318 // There is a benign race here. See comments in methodData.hpp. |
0 | 1319 mdo->inc_decompile_count(); |
1320 } | |
1321 | |
1322 void nmethod::make_unloaded(BoolObjectClosure* is_alive, oop cause) { | |
1323 | |
1324 post_compiled_method_unload(); | |
1325 | |
1326 // Since this nmethod is being unloaded, make sure that dependencies | |
1327 // recorded in instanceKlasses get flushed and pass non-NULL closure to | |
1328 // indicate that this work is being done during a GC. | |
1329 assert(Universe::heap()->is_gc_active(), "should only be called during gc"); | |
1330 assert(is_alive != NULL, "Should be non-NULL"); | |
1331 // A non-NULL is_alive closure indicates that this is being called during GC. | |
1332 flush_dependencies(is_alive); | |
1333 | |
1334 // Break cycle between nmethod & method | |
1335 if (TraceClassUnloading && WizardMode) { | |
1336 tty->print_cr("[Class unloading: Making nmethod " INTPTR_FORMAT | |
6725
da91efe96a93
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coleenp
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diff
changeset
|
1337 " unloadable], Method*(" INTPTR_FORMAT |
0 | 1338 "), cause(" INTPTR_FORMAT ")", |
1339 this, (address)_method, (address)cause); | |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1340 if (!Universe::heap()->is_gc_active()) |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1341 cause->klass()->print(); |
0 | 1342 } |
941 | 1343 // Unlink the osr method, so we do not look this up again |
1344 if (is_osr_method()) { | |
1345 invalidate_osr_method(); | |
1346 } | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1347 // If _method is already NULL the Method* is about to be unloaded, |
0 | 1348 // so we don't have to break the cycle. Note that it is possible to |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1349 // have the Method* live here, in case we unload the nmethod because |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
1350 // it is pointing to some oop (other than the Method*) being unloaded. |
0 | 1351 if (_method != NULL) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1352 // OSR methods point to the Method*, but the Method* does not |
0 | 1353 // point back! |
1354 if (_method->code() == this) { | |
1355 _method->clear_code(); // Break a cycle | |
1356 } | |
1357 _method = NULL; // Clear the method of this dead nmethod | |
1358 } | |
9707 | 1359 |
1360 #ifdef GRAAL | |
1361 // The method can only be unloaded after the pointer to the installed code | |
1362 // Java wrapper is no longer alive. Here we need to clear out this weak | |
1363 // reference to the dead object. | |
1364 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
|
1365 InstalledCode::set_address(_graal_installed_code, 0); |
9707 | 1366 _graal_installed_code = NULL; |
1367 } | |
1368 #endif | |
1369 | |
0 | 1370 // Make the class unloaded - i.e., change state and notify sweeper |
1538
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1490
diff
changeset
|
1371 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint"); |
0 | 1372 if (is_in_use()) { |
1373 // Transitioning directly from live to unloaded -- so | |
1374 // we need to force a cache clean-up; remember this | |
1375 // for later on. | |
1376 CodeCache::set_needs_cache_clean(true); | |
1377 } | |
1644
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1378 _state = unloaded; |
0 | 1379 |
1109
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1380 // Log the unloading. |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1381 log_state_change(); |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1382 |
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1383 // The Method* is gone at this point |
0 | 1384 assert(_method == NULL, "Tautology"); |
1385 | |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1386 set_osr_link(NULL); |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1387 //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
|
1388 NMethodSweeper::report_state_change(this); |
0 | 1389 } |
1390 | |
1391 void nmethod::invalidate_osr_method() { | |
1392 assert(_entry_bci != InvocationEntryBci, "wrong kind of nmethod"); | |
1393 // Remove from list of active nmethods | |
1394 if (method() != NULL) | |
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6806
diff
changeset
|
1395 method()->method_holder()->remove_osr_nmethod(this); |
0 | 1396 // Set entry as invalid |
1397 _entry_bci = InvalidOSREntryBci; | |
1398 } | |
1399 | |
1109
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1400 void nmethod::log_state_change() const { |
0 | 1401 if (LogCompilation) { |
1402 if (xtty != NULL) { | |
1403 ttyLocker ttyl; // keep the following output all in one block | |
1644
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1404 if (_state == unloaded) { |
1109
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1405 xtty->begin_elem("make_unloaded thread='" UINTX_FORMAT "'", |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1406 os::current_thread_id()); |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1407 } else { |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1408 xtty->begin_elem("make_not_entrant thread='" UINTX_FORMAT "'%s", |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1409 os::current_thread_id(), |
1644
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1410 (_state == zombie ? " zombie='1'" : "")); |
1109
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents:
994
diff
changeset
|
1411 } |
0 | 1412 log_identity(xtty); |
1413 xtty->stamp(); | |
1414 xtty->end_elem(); | |
1415 } | |
1416 } | |
1644
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6965184: possible races in make_not_entrant_or_zombie
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|
1417 if (PrintCompilation && _state != unloaded) { |
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
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diff
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|
1418 print_on(tty, _state == zombie ? "made zombie" : "made not entrant"); |
0 | 1419 } |
1420 } | |
1421 | |
13074
78da3894b86f
8027593: performance drop with constrained codecache starting with hs25 b111
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|
1422 /** |
78da3894b86f
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diff
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|
1423 * Common functionality for both make_not_entrant and make_zombie |
78da3894b86f
8027593: performance drop with constrained codecache starting with hs25 b111
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diff
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|
1424 */ |
1141 | 1425 bool nmethod::make_not_entrant_or_zombie(unsigned int state) { |
0 | 1426 assert(state == zombie || state == not_entrant, "must be zombie or not_entrant"); |
2342
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|
1427 assert(!is_zombie(), "should not already be a zombie"); |
0 | 1428 |
1644
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6965184: possible races in make_not_entrant_or_zombie
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|
1429 // Make sure neither the nmethod nor the method is flushed in case of a safepoint in code below. |
0 | 1430 nmethodLocker nml(this); |
1644
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|
1431 methodHandle the_method(method()); |
1726 | 1432 No_Safepoint_Verifier nsv; |
0 | 1433 |
12080 | 1434 // during patching, depending on the nmethod state we must notify the GC that |
1435 // code has been unloaded, unregistering it. We cannot do this right while | |
1436 // holding the Patching_lock because we need to use the CodeCache_lock. This | |
1437 // would be prone to deadlocks. | |
1438 // This flag is used to remember whether we need to later lock and unregister. | |
1439 bool nmethod_needs_unregister = false; | |
1440 | |
0 | 1441 { |
1109
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
never
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diff
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|
1442 // invalidate osr nmethod before acquiring the patching lock since |
032260830071
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|
1443 // they both acquire leaf locks and we don't want a deadlock. |
032260830071
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|
1444 // This logic is equivalent to the logic below for patching the |
032260830071
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diff
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|
1445 // verified entry point of regular methods. |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
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diff
changeset
|
1446 if (is_osr_method()) { |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
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994
diff
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|
1447 // this effectively makes the osr nmethod not entrant |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
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diff
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|
1448 invalidate_osr_method(); |
032260830071
5057818: codecache full and compiler disabled in bigapps fastdebug run
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diff
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|
1449 } |
032260830071
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diff
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|
1450 |
0 | 1451 // Enter critical section. Does not block for safepoint. |
1452 MutexLockerEx pl(Patching_lock, Mutex::_no_safepoint_check_flag); | |
1109
032260830071
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|
1453 |
1644
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diff
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|
1454 if (_state == state) { |
1109
032260830071
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994
diff
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|
1455 // another thread already performed this transition so nothing |
032260830071
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diff
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|
1456 // to do, but return false to indicate this. |
032260830071
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|
1457 return false; |
032260830071
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|
1458 } |
032260830071
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|
1459 |
0 | 1460 // The caller can be calling the method statically or through an inline |
1461 // cache call. | |
1109
032260830071
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|
1462 if (!is_osr_method() && !is_not_entrant()) { |
0 | 1463 NativeJump::patch_verified_entry(entry_point(), verified_entry_point(), |
1464 SharedRuntime::get_handle_wrong_method_stub()); | |
1465 } | |
1466 | |
1644
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|
1467 if (is_in_use()) { |
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|
1468 // It's a true state change, so mark the method as decompiled. |
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diff
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|
1469 // Do it only for transition from alive. |
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diff
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|
1470 inc_decompile_count(); |
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diff
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|
1471 } |
1206
87684f1a88b5
6614597: Performance variability in jvm2008 xml.validation
kvn
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1204
diff
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|
1472 |
12080 | 1473 // If the state is becoming a zombie, signal to unregister the nmethod with |
1474 // the heap. | |
1475 // This nmethod may have already been unloaded during a full GC. | |
1476 if ((state == zombie) && !is_unloaded()) { | |
1477 nmethod_needs_unregister = true; | |
1478 } | |
1479 | |
12324
510fbd28919c
8020151: PSR:PERF Large performance regressions when code cache is filled
anoll
parents:
12175
diff
changeset
|
1480 // 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
|
1481 // 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
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diff
changeset
|
1482 // 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
|
1483 // for stack scanning. |
510fbd28919c
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anoll
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12175
diff
changeset
|
1484 if (state == not_entrant) { |
510fbd28919c
8020151: PSR:PERF Large performance regressions when code cache is filled
anoll
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diff
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|
1485 mark_as_seen_on_stack(); |
510fbd28919c
8020151: PSR:PERF Large performance regressions when code cache is filled
anoll
parents:
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diff
changeset
|
1486 OrderAccess::storestore(); |
510fbd28919c
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anoll
parents:
12175
diff
changeset
|
1487 } |
510fbd28919c
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|
1488 |
0 | 1489 // Change state |
1644
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|
1490 _state = state; |
1109
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|
1491 |
032260830071
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|
1492 // Log the transition once |
032260830071
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diff
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|
1493 log_state_change(); |
032260830071
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diff
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|
1494 |
1644
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diff
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|
1495 // Remove nmethod from method. |
2a47bd84841f
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diff
changeset
|
1496 // We need to check if both the _code and _from_compiled_code_entry_point |
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
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|
1497 // refer to this nmethod because there is a race in setting these two fields |
6725
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diff
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|
1498 // in Method* as seen in bugid 4947125. |
1644
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
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parents:
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diff
changeset
|
1499 // 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:
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diff
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|
1500 // could be flushed and the compiler and vtable stubs could still call |
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
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parents:
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diff
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|
1501 // through it. |
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
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|
1502 if (method() != NULL && (method()->code() == this || |
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
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diff
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|
1503 method()->from_compiled_entry() == verified_entry_point())) { |
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
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parents:
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diff
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|
1504 HandleMark hm; |
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
parents:
1616
diff
changeset
|
1505 method()->clear_code(); |
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6965184: possible races in make_not_entrant_or_zombie
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diff
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|
1506 } |
0 | 1507 } // leave critical region under Patching_lock |
1508 | |
1538
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
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diff
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|
1509 // When the nmethod becomes zombie it is no longer alive so the |
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
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1490
diff
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|
1510 // dependencies must be flushed. nmethods in the not_entrant |
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
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1490
diff
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|
1511 // state will be flushed later when the transition to zombie |
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
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1490
diff
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|
1512 // happens or they get unloaded. |
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
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diff
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|
1513 if (state == zombie) { |
1726 | 1514 { |
1515 // Flushing dependecies must be done before any possible | |
1516 // safepoint can sneak in, otherwise the oops used by the | |
1517 // dependency logic could have become stale. | |
1518 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
12080 | 1519 if (nmethod_needs_unregister) { |
1520 Universe::heap()->unregister_nmethod(this); | |
1521 } | |
1726 | 1522 flush_dependencies(NULL); |
1523 } | |
1644
2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
never
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diff
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|
1524 |
2342
46a56fac55c7
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dcubed
parents:
2321
diff
changeset
|
1525 // 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
|
1526 // 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
|
1527 // 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
|
1528 // 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
|
1529 // 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
|
1530 post_compiled_method_unload(); |
1726 | 1531 |
1532 #ifdef ASSERT | |
1533 // It's no longer safe to access the oops section since zombie | |
1534 // nmethods aren't scanned for GC. | |
1535 _oops_are_stale = true; | |
1536 #endif | |
12161
e1fbb86b47e4
8016277: Crash in nmethod::is_compiled_by_c1() on x86
roland
parents:
12080
diff
changeset
|
1537 // 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
|
1538 // nmethod is in zombie state |
e1fbb86b47e4
8016277: Crash in nmethod::is_compiled_by_c1() on x86
roland
parents:
12080
diff
changeset
|
1539 set_method(NULL); |
1538
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
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parents:
1490
diff
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|
1540 } else { |
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
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diff
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|
1541 assert(state == not_entrant, "other cases may need to be handled differently"); |
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
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diff
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|
1542 } |
12414
98031e66de15
Fix unittests
Christos Kotselidis <christos.kotselidis@oracle.com>
parents:
12411
diff
changeset
|
1543 #ifdef GRAAL |
13230
01080e31692d
fixed crash when TraceCreateZombies is enabled
Doug Simon <doug.simon@oracle.com>
parents:
13102
diff
changeset
|
1544 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
|
1545 // 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
|
1546 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
|
1547 } |
12414
98031e66de15
Fix unittests
Christos Kotselidis <christos.kotselidis@oracle.com>
parents:
12411
diff
changeset
|
1548 #endif |
1538
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
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diff
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|
1549 |
0 | 1550 if (TraceCreateZombies) { |
9707 | 1551 ResourceMark m; |
13230
01080e31692d
fixed crash when TraceCreateZombies is enabled
Doug Simon <doug.simon@oracle.com>
parents:
13102
diff
changeset
|
1552 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 | 1553 } |
1554 | |
13074
78da3894b86f
8027593: performance drop with constrained codecache starting with hs25 b111
anoll
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|
1555 NMethodSweeper::report_state_change(this); |
1109
032260830071
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|
1556 return true; |
0 | 1557 } |
1558 | |
1559 void nmethod::flush() { | |
1560 // Note that there are no valid oops in the nmethod anymore. | |
1561 assert(is_zombie() || (is_osr_method() && is_unloaded()), "must be a zombie method"); | |
1562 assert(is_marked_for_reclamation() || (is_osr_method() && is_unloaded()), "must be marked for reclamation"); | |
1563 | |
1564 assert (!is_locked_by_vm(), "locked methods shouldn't be flushed"); | |
1538
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
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1490
diff
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|
1565 assert_locked_or_safepoint(CodeCache_lock); |
0 | 1566 |
1567 // completely deallocate this method | |
4872
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4006
diff
changeset
|
1568 Events::log(JavaThread::current(), "flushing nmethod " INTPTR_FORMAT, this); |
0 | 1569 if (PrintMethodFlushing) { |
1202 | 1570 tty->print_cr("*flushing nmethod %3d/" INTPTR_FORMAT ". Live blobs:" UINT32_FORMAT "/Free CodeCache:" SIZE_FORMAT "Kb", |
1571 _compile_id, this, CodeCache::nof_blobs(), CodeCache::unallocated_capacity()/1024); | |
0 | 1572 } |
1573 | |
1574 // We need to deallocate any ExceptionCache data. | |
1575 // Note that we do not need to grab the nmethod lock for this, it | |
1576 // better be thread safe if we're disposing of it! | |
1577 ExceptionCache* ec = exception_cache(); | |
1578 set_exception_cache(NULL); | |
1579 while(ec != NULL) { | |
1580 ExceptionCache* next = ec->next(); | |
1581 delete ec; | |
1582 ec = next; | |
1583 } | |
1584 | |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1585 if (on_scavenge_root_list()) { |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1586 CodeCache::drop_scavenge_root_nmethod(this); |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
1587 } |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
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931
diff
changeset
|
1588 |
1692 | 1589 #ifdef SHARK |
1845
a222fcfba398
6990549: Zero and Shark fixes after 6978355 and 6953144
twisti
parents:
1784
diff
changeset
|
1590 ((SharkCompiler *) compiler())->free_compiled_method(insts_begin()); |
1692 | 1591 #endif // SHARK |
1592 | |
0 | 1593 ((CodeBlob*)(this))->flush(); |
1594 | |
1595 CodeCache::free(this); | |
1596 } | |
1597 | |
1598 | |
1599 // | |
1600 // Notify all classes this nmethod is dependent on that it is no | |
1601 // longer dependent. This should only be called in two situations. | |
1602 // First, when a nmethod transitions to a zombie all dependents need | |
1603 // to be clear. Since zombification happens at a safepoint there's no | |
1604 // synchronization issues. The second place is a little more tricky. | |
1605 // During phase 1 of mark sweep class unloading may happen and as a | |
1606 // result some nmethods may get unloaded. In this case the flushing | |
1607 // of dependencies must happen during phase 1 since after GC any | |
1608 // dependencies in the unloaded nmethod won't be updated, so | |
1609 // traversing the dependency information in unsafe. In that case this | |
1610 // function is called with a non-NULL argument and this function only | |
1611 // notifies instanceKlasses that are reachable | |
1612 | |
1613 void nmethod::flush_dependencies(BoolObjectClosure* is_alive) { | |
1538
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
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diff
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|
1614 assert_locked_or_safepoint(CodeCache_lock); |
0 | 1615 assert(Universe::heap()->is_gc_active() == (is_alive != NULL), |
1616 "is_alive is non-NULL if and only if we are called during GC"); | |
1617 if (!has_flushed_dependencies()) { | |
1618 set_has_flushed_dependencies(); | |
1619 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1620 Klass* klass = deps.context_type(); |
0 | 1621 if (klass == NULL) continue; // ignore things like evol_method |
1622 | |
1623 // During GC the is_alive closure is non-NULL, and is used to | |
1624 // determine liveness of dependees that need to be updated. | |
6725
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1625 if (is_alive == NULL || klass->is_loader_alive(is_alive)) { |
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1626 InstanceKlass::cast(klass)->remove_dependent_nmethod(this); |
0 | 1627 } |
1628 } | |
1629 } | |
1630 } | |
1631 | |
1632 | |
1633 // If this oop is not live, the nmethod can be unloaded. | |
6787
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1634 bool nmethod::can_unload(BoolObjectClosure* is_alive, oop* root, bool unloading_occurred) { |
0 | 1635 assert(root != NULL, "just checking"); |
1636 oop obj = *root; | |
1637 if (obj == NULL || is_alive->do_object_b(obj)) { | |
1638 return false; | |
1639 } | |
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1640 |
989
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1641 // If ScavengeRootsInCode is true, an nmethod might be unloaded |
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1642 // simply because one of its constant oops has gone dead. |
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1643 // No actual classes need to be unloaded in order for this to occur. |
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1644 assert(unloading_occurred || ScavengeRootsInCode, "Inconsistency in unloading"); |
0 | 1645 make_unloaded(is_alive, obj); |
1646 return true; | |
1647 } | |
1648 | |
1649 // ------------------------------------------------------------------ | |
1650 // post_compiled_method_load_event | |
1651 // new method for install_code() path | |
1652 // Transfer information from compilation to jvmti | |
1653 void nmethod::post_compiled_method_load_event() { | |
1654 | |
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1655 Method* moop = method(); |
4006 | 1656 #ifndef USDT2 |
0 | 1657 HS_DTRACE_PROBE8(hotspot, compiled__method__load, |
1658 moop->klass_name()->bytes(), | |
1659 moop->klass_name()->utf8_length(), | |
1660 moop->name()->bytes(), | |
1661 moop->name()->utf8_length(), | |
1662 moop->signature()->bytes(), | |
1663 moop->signature()->utf8_length(), | |
1748 | 1664 insts_begin(), insts_size()); |
4006 | 1665 #else /* USDT2 */ |
1666 HOTSPOT_COMPILED_METHOD_LOAD( | |
1667 (char *) moop->klass_name()->bytes(), | |
1668 moop->klass_name()->utf8_length(), | |
1669 (char *) moop->name()->bytes(), | |
1670 moop->name()->utf8_length(), | |
1671 (char *) moop->signature()->bytes(), | |
1672 moop->signature()->utf8_length(), | |
1673 insts_begin(), insts_size()); | |
1674 #endif /* USDT2 */ | |
0 | 1675 |
1616
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1676 if (JvmtiExport::should_post_compiled_method_load() || |
38e8278318ca
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1677 JvmtiExport::should_post_compiled_method_unload()) { |
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1678 get_and_cache_jmethod_id(); |
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never
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1679 } |
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1680 |
0 | 1681 if (JvmtiExport::should_post_compiled_method_load()) { |
2195
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1682 // Let the Service thread (which is a real Java thread) post the event |
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1683 MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag); |
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1684 JvmtiDeferredEventQueue::enqueue( |
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1685 JvmtiDeferredEvent::compiled_method_load_event(this)); |
0 | 1686 } |
1687 } | |
1688 | |
1616
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1689 jmethodID nmethod::get_and_cache_jmethod_id() { |
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1690 if (_jmethod_id == NULL) { |
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1691 // Cache the jmethod_id since it can no longer be looked up once the |
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1692 // method itself has been marked for unloading. |
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1693 _jmethod_id = method()->jmethod_id(); |
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never
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1694 } |
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1695 return _jmethod_id; |
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never
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1696 } |
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1697 |
0 | 1698 void nmethod::post_compiled_method_unload() { |
1577
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1699 if (unload_reported()) { |
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1700 // During unloading we transition to unloaded and then to zombie |
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1701 // and the unloading is reported during the first transition. |
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1702 return; |
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1703 } |
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1704 |
0 | 1705 assert(_method != NULL && !is_unloaded(), "just checking"); |
1706 DTRACE_METHOD_UNLOAD_PROBE(method()); | |
1707 | |
1708 // If a JVMTI agent has enabled the CompiledMethodUnload event then | |
1616
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1709 // post the event. Sometime later this nmethod will be made a zombie |
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1710 // by the sweeper but the Method* will not be valid at that point. |
1616
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1711 // If the _jmethod_id is null then no load event was ever requested |
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1712 // so don't bother posting the unload. The main reason for this is |
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1713 // that the jmethodID is a weak reference to the Method* so if |
1616
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1714 // it's being unloaded there's no way to look it up since the weak |
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1715 // ref will have been cleared. |
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1716 if (_jmethod_id != NULL && JvmtiExport::should_post_compiled_method_unload()) { |
0 | 1717 assert(!unload_reported(), "already unloaded"); |
2195
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1718 JvmtiDeferredEvent event = |
2342
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1719 JvmtiDeferredEvent::compiled_method_unload_event(this, |
2195
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1720 _jmethod_id, insts_begin()); |
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1721 if (SafepointSynchronize::is_at_safepoint()) { |
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1722 // Don't want to take the queueing lock. Add it as pending and |
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1723 // it will get enqueued later. |
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1724 JvmtiDeferredEventQueue::add_pending_event(event); |
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1725 } else { |
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1726 MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag); |
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1727 JvmtiDeferredEventQueue::enqueue(event); |
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1728 } |
0 | 1729 } |
1730 | |
1731 // The JVMTI CompiledMethodUnload event can be enabled or disabled at | |
1732 // any time. As the nmethod is being unloaded now we mark it has | |
1733 // having the unload event reported - this will ensure that we don't | |
1734 // attempt to report the event in the unlikely scenario where the | |
1735 // event is enabled at the time the nmethod is made a zombie. | |
1736 set_unload_reported(); | |
1737 } | |
1738 | |
1739 // This is called at the end of the strong tracing/marking phase of a | |
1740 // GC to unload an nmethod if it contains otherwise unreachable | |
1741 // oops. | |
1742 | |
6787
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1743 void nmethod::do_unloading(BoolObjectClosure* is_alive, bool unloading_occurred) { |
0 | 1744 // Make sure the oop's ready to receive visitors |
1745 assert(!is_zombie() && !is_unloaded(), | |
1746 "should not call follow on zombie or unloaded nmethod"); | |
1747 | |
1748 // If the method is not entrant then a JMP is plastered over the | |
1749 // first few bytes. If an oop in the old code was there, that oop | |
1750 // should not get GC'd. Skip the first few bytes of oops on | |
1751 // not-entrant methods. | |
1752 address low_boundary = verified_entry_point(); | |
1753 if (is_not_entrant()) { | |
1754 low_boundary += NativeJump::instruction_size; | |
1755 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
1756 // (See comment above.) | |
1757 } | |
1758 | |
1759 // The RedefineClasses() API can cause the class unloading invariant | |
1760 // to no longer be true. See jvmtiExport.hpp for details. | |
1761 // Also, leave a debugging breadcrumb in local flag. | |
1762 bool a_class_was_redefined = JvmtiExport::has_redefined_a_class(); | |
1763 if (a_class_was_redefined) { | |
1764 // This set of the unloading_occurred flag is done before the | |
1765 // call to post_compiled_method_unload() so that the unloading | |
1766 // of this nmethod is reported. | |
1767 unloading_occurred = true; | |
1768 } | |
1769 | |
9707 | 1770 #ifdef GRAAL |
1771 // Follow Graal method | |
1772 if (_graal_installed_code != NULL) { | |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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1773 if (_graal_installed_code->is_a(HotSpotNmethod::klass()) && HotSpotNmethod::isDefault(_graal_installed_code)) { |
9707 | 1774 if (!is_alive->do_object_b(_graal_installed_code)) { |
1775 _graal_installed_code = NULL; | |
1776 } | |
1777 } else { | |
1778 if (can_unload(is_alive, (oop*)&_graal_installed_code, unloading_occurred)) { | |
1779 return; | |
1780 } | |
1781 } | |
1782 } | |
13641
5a9afbf72714
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Gilles Duboscq <duboscq@ssw.jku.at>
parents:
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1783 |
5a9afbf72714
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Gilles Duboscq <duboscq@ssw.jku.at>
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|
1784 if (_speculation_log != NULL) { |
5a9afbf72714
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Gilles Duboscq <duboscq@ssw.jku.at>
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1785 if (!is_alive->do_object_b(_speculation_log)) { |
5a9afbf72714
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Gilles Duboscq <duboscq@ssw.jku.at>
parents:
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1786 _speculation_log = NULL; |
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Gilles Duboscq <duboscq@ssw.jku.at>
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1787 } |
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Gilles Duboscq <duboscq@ssw.jku.at>
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|
1788 } |
9707 | 1789 #endif |
1790 | |
0 | 1791 // Exception cache |
1792 ExceptionCache* ec = exception_cache(); | |
1793 while (ec != NULL) { | |
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1794 Klass* ex_klass = ec->exception_type(); |
0 | 1795 ExceptionCache* next_ec = ec->next(); |
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1796 if (ex_klass != NULL && !ex_klass->is_loader_alive(is_alive)) { |
0 | 1797 remove_from_exception_cache(ec); |
1798 } | |
1799 ec = next_ec; | |
1800 } | |
1801 | |
1802 // If class unloading occurred we first iterate over all inline caches and | |
1803 // clear ICs where the cached oop is referring to an unloaded klass or method. | |
1804 // The remaining live cached oops will be traversed in the relocInfo::oop_type | |
1805 // iteration below. | |
1806 if (unloading_occurred) { | |
1807 RelocIterator iter(this, low_boundary); | |
1808 while(iter.next()) { | |
1809 if (iter.type() == relocInfo::virtual_call_type) { | |
1810 CompiledIC *ic = CompiledIC_at(iter.reloc()); | |
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1811 if (ic->is_icholder_call()) { |
0 | 1812 // The only exception is compiledICHolder oops which may |
1813 // yet be marked below. (We check this further below). | |
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1814 CompiledICHolder* cichk_oop = ic->cached_icholder(); |
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1815 if (cichk_oop->holder_method()->method_holder()->is_loader_alive(is_alive) && |
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1816 cichk_oop->holder_klass()->is_loader_alive(is_alive)) { |
13441 | 1817 continue; |
1818 } | |
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1819 } else { |
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1820 Metadata* ic_oop = ic->cached_metadata(); |
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1821 if (ic_oop != NULL) { |
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1822 if (ic_oop->is_klass()) { |
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1823 if (((Klass*)ic_oop)->is_loader_alive(is_alive)) { |
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1824 continue; |
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1825 } |
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1826 } else if (ic_oop->is_method()) { |
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1827 if (((Method*)ic_oop)->method_holder()->is_loader_alive(is_alive)) { |
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1828 continue; |
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1829 } |
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1830 } else { |
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1831 ShouldNotReachHere(); |
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1832 } |
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1833 } |
13441 | 1834 } |
1835 ic->set_to_clean(); | |
0 | 1836 } |
1837 } | |
1838 } | |
1839 | |
1840 // Compiled code | |
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1841 { |
0 | 1842 RelocIterator iter(this, low_boundary); |
1843 while (iter.next()) { | |
1844 if (iter.type() == relocInfo::oop_type) { | |
1845 oop_Relocation* r = iter.oop_reloc(); | |
1846 // In this loop, we must only traverse those oops directly embedded in | |
1847 // the code. Other oops (oop_index>0) are seen as part of scopes_oops. | |
1848 assert(1 == (r->oop_is_immediate()) + | |
1849 (r->oop_addr() >= oops_begin() && r->oop_addr() < oops_end()), | |
1850 "oop must be found in exactly one place"); | |
1851 if (r->oop_is_immediate() && r->oop_value() != NULL) { | |
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1852 if (can_unload(is_alive, r->oop_addr(), unloading_occurred)) { |
0 | 1853 return; |
1854 } | |
1855 } | |
1856 } | |
1857 } | |
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1858 } |
0 | 1859 |
1860 | |
1861 // Scopes | |
1862 for (oop* p = oops_begin(); p < oops_end(); p++) { | |
1863 if (*p == Universe::non_oop_word()) continue; // skip non-oops | |
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1864 if (can_unload(is_alive, p, unloading_occurred)) { |
0 | 1865 return; |
1866 } | |
1867 } | |
1868 | |
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1869 // Ensure that all metadata is still alive |
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1870 verify_metadata_loaders(low_boundary, is_alive); |
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1871 } |
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1872 |
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1873 #ifdef ASSERT |
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1874 |
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1875 class CheckClass : AllStatic { |
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1876 static BoolObjectClosure* _is_alive; |
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1877 |
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1878 // Check class_loader is alive for this bit of metadata. |
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1879 static void check_class(Metadata* md) { |
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1880 Klass* klass = NULL; |
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1881 if (md->is_klass()) { |
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1882 klass = ((Klass*)md); |
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1883 } else if (md->is_method()) { |
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1884 klass = ((Method*)md)->method_holder(); |
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1885 } else if (md->is_methodData()) { |
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1886 klass = ((MethodData*)md)->method()->method_holder(); |
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1887 } else { |
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1888 md->print(); |
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1889 ShouldNotReachHere(); |
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1890 } |
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1891 assert(klass->is_loader_alive(_is_alive), "must be alive"); |
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1892 } |
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1893 public: |
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1894 static void do_check_class(BoolObjectClosure* is_alive, nmethod* nm) { |
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1895 assert(SafepointSynchronize::is_at_safepoint(), "this is only ok at safepoint"); |
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1896 _is_alive = is_alive; |
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1897 nm->metadata_do(check_class); |
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1898 } |
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1899 }; |
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1900 |
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1901 // This is called during a safepoint so can use static data |
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1902 BoolObjectClosure* CheckClass::_is_alive = NULL; |
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1903 #endif // ASSERT |
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1904 |
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1905 |
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1906 // Processing of oop references should have been sufficient to keep |
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1907 // all strong references alive. Any weak references should have been |
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1908 // cleared as well. Visit all the metadata and ensure that it's |
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1909 // really alive. |
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1910 void nmethod::verify_metadata_loaders(address low_boundary, BoolObjectClosure* is_alive) { |
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1911 #ifdef ASSERT |
0 | 1912 RelocIterator iter(this, low_boundary); |
1913 while (iter.next()) { | |
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1914 // static_stub_Relocations may have dangling references to |
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1915 // Method*s so trim them out here. Otherwise it looks like |
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1916 // compiled code is maintaining a link to dead metadata. |
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1917 address static_call_addr = NULL; |
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1918 if (iter.type() == relocInfo::opt_virtual_call_type) { |
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1919 CompiledIC* cic = CompiledIC_at(iter.reloc()); |
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1920 if (!cic->is_call_to_interpreted()) { |
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1921 static_call_addr = iter.addr(); |
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1922 } |
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1923 } else if (iter.type() == relocInfo::static_call_type) { |
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1924 CompiledStaticCall* csc = compiledStaticCall_at(iter.reloc()); |
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1925 if (!csc->is_call_to_interpreted()) { |
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1926 static_call_addr = iter.addr(); |
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1927 } |
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1928 } |
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1929 if (static_call_addr != NULL) { |
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1930 RelocIterator sciter(this, low_boundary); |
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1931 while (sciter.next()) { |
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1932 if (sciter.type() == relocInfo::static_stub_type && |
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1933 sciter.static_stub_reloc()->static_call() == static_call_addr) { |
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1934 sciter.static_stub_reloc()->clear_inline_cache(); |
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1935 } |
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1936 } |
0 | 1937 } |
1938 } | |
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1939 // Check that the metadata embedded in the nmethod is alive |
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1940 CheckClass::do_check_class(is_alive, this); |
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1941 #endif |
0 | 1942 } |
1943 | |
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1944 |
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1945 // Iterate over metadata calling this function. Used by RedefineClasses |
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1946 void nmethod::metadata_do(void f(Metadata*)) { |
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1947 address low_boundary = verified_entry_point(); |
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1948 if (is_not_entrant()) { |
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1949 low_boundary += NativeJump::instruction_size; |
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1950 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. |
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1951 // (See comment above.) |
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1952 } |
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1953 { |
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1954 // Visit all immediate references that are embedded in the instruction stream. |
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1955 RelocIterator iter(this, low_boundary); |
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1956 while (iter.next()) { |
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1957 if (iter.type() == relocInfo::metadata_type ) { |
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1958 metadata_Relocation* r = iter.metadata_reloc(); |
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1959 // In this lmetadata, we must only follow those metadatas directly embedded in |
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1960 // the code. Other metadatas (oop_index>0) are seen as part of |
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1961 // the metadata section below. |
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1962 assert(1 == (r->metadata_is_immediate()) + |
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1963 (r->metadata_addr() >= metadata_begin() && r->metadata_addr() < metadata_end()), |
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1964 "metadata must be found in exactly one place"); |
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1965 if (r->metadata_is_immediate() && r->metadata_value() != NULL) { |
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1966 Metadata* md = r->metadata_value(); |
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1967 f(md); |
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1968 } |
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1969 } else if (iter.type() == relocInfo::virtual_call_type) { |
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1970 // Check compiledIC holders associated with this nmethod |
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1971 CompiledIC *ic = CompiledIC_at(iter.reloc()); |
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1972 if (ic->is_icholder_call()) { |
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1973 CompiledICHolder* cichk = ic->cached_icholder(); |
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1974 f(cichk->holder_method()); |
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1975 f(cichk->holder_klass()); |
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1976 } else { |
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1977 Metadata* ic_oop = ic->cached_metadata(); |
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1978 if (ic_oop != NULL) { |
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1979 f(ic_oop); |
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1980 } |
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1981 } |
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1982 } |
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1983 } |
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1984 } |
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1985 |
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1986 // Visit the metadata section |
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1987 for (Metadata** p = metadata_begin(); p < metadata_end(); p++) { |
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1988 if (*p == Universe::non_oop_word() || *p == NULL) continue; // skip non-oops |
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1989 Metadata* md = *p; |
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1990 f(md); |
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1991 } |
10253
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1992 |
6725
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1993 // Call function Method*, not embedded in these other places. |
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1994 if (_method != NULL) f(_method); |
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1995 } |
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1996 |
12080 | 1997 void nmethod::oops_do(OopClosure* f, bool allow_zombie) { |
0 | 1998 // make sure the oops ready to receive visitors |
12080 | 1999 assert(allow_zombie || !is_zombie(), "should not call follow on zombie nmethod"); |
2000 assert(!is_unloaded(), "should not call follow on unloaded nmethod"); | |
0 | 2001 |
2002 // If the method is not entrant or zombie then a JMP is plastered over the | |
2003 // first few bytes. If an oop in the old code was there, that oop | |
2004 // should not get GC'd. Skip the first few bytes of oops on | |
2005 // not-entrant methods. | |
2006 address low_boundary = verified_entry_point(); | |
2007 if (is_not_entrant()) { | |
2008 low_boundary += NativeJump::instruction_size; | |
2009 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | |
2010 // (See comment above.) | |
2011 } | |
2012 | |
9707 | 2013 #ifdef GRAAL |
2014 if (_graal_installed_code != NULL) { | |
2015 f->do_oop((oop*) &_graal_installed_code); | |
2016 } | |
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2017 if (_speculation_log != NULL) { |
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2018 f->do_oop((oop*) &_speculation_log); |
9707 | 2019 } |
2020 #endif | |
2021 | |
0 | 2022 RelocIterator iter(this, low_boundary); |
941 | 2023 |
0 | 2024 while (iter.next()) { |
2025 if (iter.type() == relocInfo::oop_type ) { | |
2026 oop_Relocation* r = iter.oop_reloc(); | |
2027 // In this loop, we must only follow those oops directly embedded in | |
2028 // the code. Other oops (oop_index>0) are seen as part of scopes_oops. | |
941 | 2029 assert(1 == (r->oop_is_immediate()) + |
2030 (r->oop_addr() >= oops_begin() && r->oop_addr() < oops_end()), | |
2031 "oop must be found in exactly one place"); | |
0 | 2032 if (r->oop_is_immediate() && r->oop_value() != NULL) { |
2033 f->do_oop(r->oop_addr()); | |
2034 } | |
2035 } | |
2036 } | |
2037 | |
2038 // Scopes | |
989
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2039 // This includes oop constants not inlined in the code stream. |
0 | 2040 for (oop* p = oops_begin(); p < oops_end(); p++) { |
2041 if (*p == Universe::non_oop_word()) continue; // skip non-oops | |
2042 f->do_oop(p); | |
2043 } | |
2044 } | |
2045 | |
989
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2046 #define NMETHOD_SENTINEL ((nmethod*)badAddress) |
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2047 |
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2048 nmethod* volatile nmethod::_oops_do_mark_nmethods; |
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2049 |
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2050 // An nmethod is "marked" if its _mark_link is set non-null. |
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2051 // Even if it is the end of the linked list, it will have a non-null link value, |
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2052 // as long as it is on the list. |
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2053 // This code must be MP safe, because it is used from parallel GC passes. |
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2054 bool nmethod::test_set_oops_do_mark() { |
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2055 assert(nmethod::oops_do_marking_is_active(), "oops_do_marking_prologue must be called"); |
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2056 nmethod* observed_mark_link = _oops_do_mark_link; |
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2057 if (observed_mark_link == NULL) { |
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2058 // Claim this nmethod for this thread to mark. |
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2059 observed_mark_link = (nmethod*) |
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2060 Atomic::cmpxchg_ptr(NMETHOD_SENTINEL, &_oops_do_mark_link, NULL); |
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2061 if (observed_mark_link == NULL) { |
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2062 |
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2063 // Atomically append this nmethod (now claimed) to the head of the list: |
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2064 nmethod* observed_mark_nmethods = _oops_do_mark_nmethods; |
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2065 for (;;) { |
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2066 nmethod* required_mark_nmethods = observed_mark_nmethods; |
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2067 _oops_do_mark_link = required_mark_nmethods; |
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2068 observed_mark_nmethods = (nmethod*) |
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2069 Atomic::cmpxchg_ptr(this, &_oops_do_mark_nmethods, required_mark_nmethods); |
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2070 if (observed_mark_nmethods == required_mark_nmethods) |
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2071 break; |
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2072 } |
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2073 // Mark was clear when we first saw this guy. |
2405
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2074 NOT_PRODUCT(if (TraceScavenge) print_on(tty, "oops_do, mark")); |
989
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2075 return false; |
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2076 } |
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2077 } |
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2078 // On fall through, another racing thread marked this nmethod before we did. |
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2079 return true; |
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2080 } |
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2081 |
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2082 void nmethod::oops_do_marking_prologue() { |
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2083 NOT_PRODUCT(if (TraceScavenge) tty->print_cr("[oops_do_marking_prologue")); |
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2084 assert(_oops_do_mark_nmethods == NULL, "must not call oops_do_marking_prologue twice in a row"); |
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2085 // We use cmpxchg_ptr instead of regular assignment here because the user |
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2086 // may fork a bunch of threads, and we need them all to see the same state. |
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2087 void* observed = Atomic::cmpxchg_ptr(NMETHOD_SENTINEL, &_oops_do_mark_nmethods, NULL); |
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2088 guarantee(observed == NULL, "no races in this sequential code"); |
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2089 } |
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2090 |
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2091 void nmethod::oops_do_marking_epilogue() { |
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2092 assert(_oops_do_mark_nmethods != NULL, "must not call oops_do_marking_epilogue twice in a row"); |
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2093 nmethod* cur = _oops_do_mark_nmethods; |
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2094 while (cur != NMETHOD_SENTINEL) { |
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2095 assert(cur != NULL, "not NULL-terminated"); |
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2096 nmethod* next = cur->_oops_do_mark_link; |
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2097 cur->_oops_do_mark_link = NULL; |
2375
d673ef06fe96
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2098 cur->fix_oop_relocations(); |
2405
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2099 NOT_PRODUCT(if (TraceScavenge) cur->print_on(tty, "oops_do, unmark")); |
989
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2100 cur = next; |
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2101 } |
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2102 void* required = _oops_do_mark_nmethods; |
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2103 void* observed = Atomic::cmpxchg_ptr(NULL, &_oops_do_mark_nmethods, required); |
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2104 guarantee(observed == required, "no races in this sequential code"); |
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2105 NOT_PRODUCT(if (TraceScavenge) tty->print_cr("oops_do_marking_epilogue]")); |
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2106 } |
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2107 |
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2108 class DetectScavengeRoot: public OopClosure { |
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2109 bool _detected_scavenge_root; |
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2110 public: |
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2111 DetectScavengeRoot() : _detected_scavenge_root(false) |
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2112 { NOT_PRODUCT(_print_nm = NULL); } |
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2113 bool detected_scavenge_root() { return _detected_scavenge_root; } |
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2114 virtual void do_oop(oop* p) { |
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2115 if ((*p) != NULL && (*p)->is_scavengable()) { |
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2116 NOT_PRODUCT(maybe_print(p)); |
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2117 _detected_scavenge_root = true; |
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2118 } |
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2119 } |
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2120 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
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2121 |
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2122 #ifndef PRODUCT |
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2123 nmethod* _print_nm; |
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2124 void maybe_print(oop* p) { |
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2125 if (_print_nm == NULL) return; |
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2126 if (!_detected_scavenge_root) _print_nm->print_on(tty, "new scavenge root"); |
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2127 tty->print_cr(""PTR_FORMAT"[offset=%d] detected scavengable oop "PTR_FORMAT" (found at "PTR_FORMAT")", |
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2128 _print_nm, (int)((intptr_t)p - (intptr_t)_print_nm), |
12316
190899198332
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2129 (void *)(*p), (intptr_t)p); |
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2130 (*p)->print(); |
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2131 } |
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2132 #endif //PRODUCT |
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2133 }; |
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2134 |
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2135 bool nmethod::detect_scavenge_root_oops() { |
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2136 DetectScavengeRoot detect_scavenge_root; |
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2137 NOT_PRODUCT(if (TraceScavenge) detect_scavenge_root._print_nm = this); |
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2138 oops_do(&detect_scavenge_root); |
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2139 return detect_scavenge_root.detected_scavenge_root(); |
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2140 } |
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2141 |
0 | 2142 // Method that knows how to preserve outgoing arguments at call. This method must be |
2143 // called with a frame corresponding to a Java invoke | |
2144 void nmethod::preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { | |
1692 | 2145 #ifndef SHARK |
0 | 2146 if (!method()->is_native()) { |
2147 SimpleScopeDesc ssd(this, fr.pc()); | |
2142 | 2148 Bytecode_invoke call(ssd.method(), ssd.bci()); |
10390 | 2149 bool has_receiver = call.has_receiver(); |
2150 bool has_appendix = call.has_appendix(); | |
2177
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2151 Symbol* signature = call.signature(); |
10390 | 2152 fr.oops_compiled_arguments_do(signature, has_receiver, has_appendix, reg_map, f); |
0 | 2153 } |
1692 | 2154 #endif // !SHARK |
0 | 2155 } |
2156 | |
2157 | |
2158 oop nmethod::embeddedOop_at(u_char* p) { | |
2349
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2159 RelocIterator iter(this, p, p + 1); |
0 | 2160 while (iter.next()) |
2161 if (iter.type() == relocInfo::oop_type) { | |
2162 return iter.oop_reloc()->oop_value(); | |
2163 } | |
2164 return NULL; | |
2165 } | |
2166 | |
2167 | |
2168 inline bool includes(void* p, void* from, void* to) { | |
2169 return from <= p && p < to; | |
2170 } | |
2171 | |
2172 | |
2173 void nmethod::copy_scopes_pcs(PcDesc* pcs, int count) { | |
2174 assert(count >= 2, "must be sentinel values, at least"); | |
2175 | |
2176 #ifdef ASSERT | |
2177 // must be sorted and unique; we do a binary search in find_pc_desc() | |
2178 int prev_offset = pcs[0].pc_offset(); | |
2179 assert(prev_offset == PcDesc::lower_offset_limit, | |
2180 "must start with a sentinel"); | |
2181 for (int i = 1; i < count; i++) { | |
2182 int this_offset = pcs[i].pc_offset(); | |
2183 assert(this_offset > prev_offset, "offsets must be sorted"); | |
2184 prev_offset = this_offset; | |
2185 } | |
2186 assert(prev_offset == PcDesc::upper_offset_limit, | |
2187 "must end with a sentinel"); | |
2188 #endif //ASSERT | |
2189 | |
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2190 // Search for MethodHandle invokes and tag the nmethod. |
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2191 for (int i = 0; i < count; i++) { |
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2192 if (pcs[i].is_method_handle_invoke()) { |
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2193 set_has_method_handle_invokes(true); |
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2194 break; |
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|
2195 } |
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|
2196 } |
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2197 assert(has_method_handle_invokes() == (_deoptimize_mh_offset != -1), "must have deopt mh handler"); |
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2198 |
0 | 2199 int size = count * sizeof(PcDesc); |
2200 assert(scopes_pcs_size() >= size, "oob"); | |
2201 memcpy(scopes_pcs_begin(), pcs, size); | |
2202 | |
2203 // Adjust the final sentinel downward. | |
2204 PcDesc* last_pc = &scopes_pcs_begin()[count-1]; | |
2205 assert(last_pc->pc_offset() == PcDesc::upper_offset_limit, "sanity"); | |
1748 | 2206 last_pc->set_pc_offset(content_size() + 1); |
0 | 2207 for (; last_pc + 1 < scopes_pcs_end(); last_pc += 1) { |
2208 // Fill any rounding gaps with copies of the last record. | |
2209 last_pc[1] = last_pc[0]; | |
2210 } | |
2211 // The following assert could fail if sizeof(PcDesc) is not | |
2212 // an integral multiple of oopSize (the rounding term). | |
2213 // If it fails, change the logic to always allocate a multiple | |
2214 // of sizeof(PcDesc), and fill unused words with copies of *last_pc. | |
2215 assert(last_pc + 1 == scopes_pcs_end(), "must match exactly"); | |
2216 } | |
2217 | |
2218 void nmethod::copy_scopes_data(u_char* buffer, int size) { | |
2219 assert(scopes_data_size() >= size, "oob"); | |
2220 memcpy(scopes_data_begin(), buffer, size); | |
2221 } | |
2222 | |
2223 | |
2224 #ifdef ASSERT | |
2225 static PcDesc* linear_search(nmethod* nm, int pc_offset, bool approximate) { | |
2226 PcDesc* lower = nm->scopes_pcs_begin(); | |
2227 PcDesc* upper = nm->scopes_pcs_end(); | |
2228 lower += 1; // exclude initial sentinel | |
2229 PcDesc* res = NULL; | |
2230 for (PcDesc* p = lower; p < upper; p++) { | |
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2231 NOT_PRODUCT(--pc_nmethod_stats.pc_desc_tests); // don't count this call to match_desc |
0 | 2232 if (match_desc(p, pc_offset, approximate)) { |
2233 if (res == NULL) | |
2234 res = p; | |
2235 else | |
2236 res = (PcDesc*) badAddress; | |
2237 } | |
2238 } | |
2239 return res; | |
2240 } | |
2241 #endif | |
2242 | |
2243 | |
2244 // Finds a PcDesc with real-pc equal to "pc" | |
2245 PcDesc* nmethod::find_pc_desc_internal(address pc, bool approximate) { | |
1748 | 2246 address base_address = code_begin(); |
0 | 2247 if ((pc < base_address) || |
2248 (pc - base_address) >= (ptrdiff_t) PcDesc::upper_offset_limit) { | |
2249 return NULL; // PC is wildly out of range | |
2250 } | |
2251 int pc_offset = (int) (pc - base_address); | |
2252 | |
2253 // Check the PcDesc cache if it contains the desired PcDesc | |
2254 // (This as an almost 100% hit rate.) | |
2255 PcDesc* res = _pc_desc_cache.find_pc_desc(pc_offset, approximate); | |
2256 if (res != NULL) { | |
2257 assert(res == linear_search(this, pc_offset, approximate), "cache ok"); | |
2258 return res; | |
2259 } | |
2260 | |
2261 // Fallback algorithm: quasi-linear search for the PcDesc | |
2262 // Find the last pc_offset less than the given offset. | |
2263 // The successor must be the required match, if there is a match at all. | |
2264 // (Use a fixed radix to avoid expensive affine pointer arithmetic.) | |
2265 PcDesc* lower = scopes_pcs_begin(); | |
2266 PcDesc* upper = scopes_pcs_end(); | |
2267 upper -= 1; // exclude final sentinel | |
2268 if (lower >= upper) return NULL; // native method; no PcDescs at all | |
2269 | |
2270 #define assert_LU_OK \ | |
2271 /* invariant on lower..upper during the following search: */ \ | |
2272 assert(lower->pc_offset() < pc_offset, "sanity"); \ | |
2273 assert(upper->pc_offset() >= pc_offset, "sanity") | |
2274 assert_LU_OK; | |
2275 | |
2276 // Use the last successful return as a split point. | |
2277 PcDesc* mid = _pc_desc_cache.last_pc_desc(); | |
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2278 NOT_PRODUCT(++pc_nmethod_stats.pc_desc_searches); |
0 | 2279 if (mid->pc_offset() < pc_offset) { |
2280 lower = mid; | |
2281 } else { | |
2282 upper = mid; | |
2283 } | |
2284 | |
2285 // Take giant steps at first (4096, then 256, then 16, then 1) | |
2286 const int LOG2_RADIX = 4 /*smaller steps in debug mode:*/ debug_only(-1); | |
2287 const int RADIX = (1 << LOG2_RADIX); | |
2288 for (int step = (1 << (LOG2_RADIX*3)); step > 1; step >>= LOG2_RADIX) { | |
2289 while ((mid = lower + step) < upper) { | |
2290 assert_LU_OK; | |
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2291 NOT_PRODUCT(++pc_nmethod_stats.pc_desc_searches); |
0 | 2292 if (mid->pc_offset() < pc_offset) { |
2293 lower = mid; | |
2294 } else { | |
2295 upper = mid; | |
2296 break; | |
2297 } | |
2298 } | |
2299 assert_LU_OK; | |
2300 } | |
2301 | |
2302 // Sneak up on the value with a linear search of length ~16. | |
2303 while (true) { | |
2304 assert_LU_OK; | |
2305 mid = lower + 1; | |
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2306 NOT_PRODUCT(++pc_nmethod_stats.pc_desc_searches); |
0 | 2307 if (mid->pc_offset() < pc_offset) { |
2308 lower = mid; | |
2309 } else { | |
2310 upper = mid; | |
2311 break; | |
2312 } | |
2313 } | |
2314 #undef assert_LU_OK | |
2315 | |
2316 if (match_desc(upper, pc_offset, approximate)) { | |
2317 assert(upper == linear_search(this, pc_offset, approximate), "search ok"); | |
2318 _pc_desc_cache.add_pc_desc(upper); | |
2319 return upper; | |
2320 } else { | |
2321 assert(NULL == linear_search(this, pc_offset, approximate), "search ok"); | |
2322 return NULL; | |
2323 } | |
2324 } | |
2325 | |
2326 | |
2327 bool nmethod::check_all_dependencies() { | |
2328 bool found_check = false; | |
2329 // wholesale check of all dependencies | |
2330 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
2331 if (deps.check_dependency() != NULL) { | |
2332 found_check = true; | |
2333 NOT_DEBUG(break); | |
2334 } | |
2335 } | |
2336 return found_check; // tell caller if we found anything | |
2337 } | |
2338 | |
2339 bool nmethod::check_dependency_on(DepChange& changes) { | |
2340 // What has happened: | |
2341 // 1) a new class dependee has been added | |
2342 // 2) dependee and all its super classes have been marked | |
2343 bool found_check = false; // set true if we are upset | |
2344 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
2345 // Evaluate only relevant dependencies. | |
2346 if (deps.spot_check_dependency_at(changes) != NULL) { | |
2347 found_check = true; | |
2348 NOT_DEBUG(break); | |
2349 } | |
2350 } | |
2351 return found_check; | |
2352 } | |
2353 | |
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2354 bool nmethod::is_evol_dependent_on(Klass* dependee) { |
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2355 InstanceKlass *dependee_ik = InstanceKlass::cast(dependee); |
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2356 Array<Method*>* dependee_methods = dependee_ik->methods(); |
0 | 2357 for (Dependencies::DepStream deps(this); deps.next(); ) { |
2358 if (deps.type() == Dependencies::evol_method) { | |
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2359 Method* method = deps.method_argument(0); |
0 | 2360 for (int j = 0; j < dependee_methods->length(); j++) { |
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2361 if (dependee_methods->at(j) == method) { |
0 | 2362 // RC_TRACE macro has an embedded ResourceMark |
2363 RC_TRACE(0x01000000, | |
2364 ("Found evol dependency of nmethod %s.%s(%s) compile_id=%d on method %s.%s(%s)", | |
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2365 _method->method_holder()->external_name(), |
0 | 2366 _method->name()->as_C_string(), |
2367 _method->signature()->as_C_string(), compile_id(), | |
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2368 method->method_holder()->external_name(), |
0 | 2369 method->name()->as_C_string(), |
2370 method->signature()->as_C_string())); | |
2371 if (TraceDependencies || LogCompilation) | |
2372 deps.log_dependency(dependee); | |
2373 return true; | |
2374 } | |
2375 } | |
2376 } | |
2377 } | |
2378 return false; | |
2379 } | |
2380 | |
2381 // Called from mark_for_deoptimization, when dependee is invalidated. | |
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2382 bool nmethod::is_dependent_on_method(Method* dependee) { |
0 | 2383 for (Dependencies::DepStream deps(this); deps.next(); ) { |
2384 if (deps.type() != Dependencies::evol_method) | |
2385 continue; | |
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2386 Method* method = deps.method_argument(0); |
0 | 2387 if (method == dependee) return true; |
2388 } | |
2389 return false; | |
2390 } | |
2391 | |
2392 | |
2393 bool nmethod::is_patchable_at(address instr_addr) { | |
1748 | 2394 assert(insts_contains(instr_addr), "wrong nmethod used"); |
0 | 2395 if (is_zombie()) { |
2396 // a zombie may never be patched | |
2397 return false; | |
2398 } | |
2399 return true; | |
2400 } | |
2401 | |
2402 | |
2403 address nmethod::continuation_for_implicit_exception(address pc) { | |
2404 // Exception happened outside inline-cache check code => we are inside | |
2405 // an active nmethod => use cpc to determine a return address | |
1748 | 2406 int exception_offset = pc - code_begin(); |
0 | 2407 int cont_offset = ImplicitExceptionTable(this).at( exception_offset ); |
2408 #ifdef ASSERT | |
2409 if (cont_offset == 0) { | |
2410 Thread* thread = ThreadLocalStorage::get_thread_slow(); | |
2411 ResetNoHandleMark rnm; // Might be called from LEAF/QUICK ENTRY | |
2412 HandleMark hm(thread); | |
2413 ResourceMark rm(thread); | |
2414 CodeBlob* cb = CodeCache::find_blob(pc); | |
2415 assert(cb != NULL && cb == this, ""); | |
2416 tty->print_cr("implicit exception happened at " INTPTR_FORMAT, pc); | |
2417 print(); | |
2418 method()->print_codes(); | |
2419 print_code(); | |
2420 print_pcs(); | |
2421 } | |
2422 #endif | |
1250 | 2423 if (cont_offset == 0) { |
2424 // Let the normal error handling report the exception | |
2425 return NULL; | |
2426 } | |
1748 | 2427 return code_begin() + cont_offset; |
0 | 2428 } |
2429 | |
2430 | |
2431 | |
2432 void nmethod_init() { | |
2433 // make sure you didn't forget to adjust the filler fields | |
2434 assert(sizeof(nmethod) % oopSize == 0, "nmethod size must be multiple of a word"); | |
2435 } | |
2436 | |
2437 | |
2438 //------------------------------------------------------------------------------------------- | |
2439 | |
2440 | |
2441 // QQQ might we make this work from a frame?? | |
2442 nmethodLocker::nmethodLocker(address pc) { | |
2443 CodeBlob* cb = CodeCache::find_blob(pc); | |
2444 guarantee(cb != NULL && cb->is_nmethod(), "bad pc for a nmethod found"); | |
2445 _nm = (nmethod*)cb; | |
2446 lock_nmethod(_nm); | |
2447 } | |
2448 | |
2342
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2449 // Only JvmtiDeferredEvent::compiled_method_unload_event() |
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2450 // should pass zombie_ok == true. |
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2451 void nmethodLocker::lock_nmethod(nmethod* nm, bool zombie_ok) { |
0 | 2452 if (nm == NULL) return; |
2453 Atomic::inc(&nm->_lock_count); | |
2342
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2454 guarantee(zombie_ok || !nm->is_zombie(), "cannot lock a zombie method"); |
0 | 2455 } |
2456 | |
2457 void nmethodLocker::unlock_nmethod(nmethod* nm) { | |
2458 if (nm == NULL) return; | |
2459 Atomic::dec(&nm->_lock_count); | |
2460 guarantee(nm->_lock_count >= 0, "unmatched nmethod lock/unlock"); | |
2461 } | |
2462 | |
1204 | 2463 |
2464 // ----------------------------------------------------------------------------- | |
2465 // nmethod::get_deopt_original_pc | |
2466 // | |
2467 // Return the original PC for the given PC if: | |
2468 // (a) the given PC belongs to a nmethod and | |
2469 // (b) it is a deopt PC | |
2470 address nmethod::get_deopt_original_pc(const frame* fr) { | |
2471 if (fr->cb() == NULL) return NULL; | |
2472 | |
2473 nmethod* nm = fr->cb()->as_nmethod_or_null(); | |
2474 if (nm != NULL && nm->is_deopt_pc(fr->pc())) | |
2475 return nm->get_original_pc(fr); | |
2476 | |
2477 return NULL; | |
0 | 2478 } |
2479 | |
2480 | |
2481 // ----------------------------------------------------------------------------- | |
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2482 // MethodHandle |
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2483 |
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2484 bool nmethod::is_method_handle_return(address return_pc) { |
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2485 if (!has_method_handle_invokes()) return false; |
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2486 PcDesc* pd = pc_desc_at(return_pc); |
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2487 if (pd == NULL) |
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2488 return false; |
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2489 return pd->is_method_handle_invoke(); |
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2490 } |
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2491 |
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2492 |
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2493 // ----------------------------------------------------------------------------- |
0 | 2494 // Verification |
2495 | |
989
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2496 class VerifyOopsClosure: public OopClosure { |
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2497 nmethod* _nm; |
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2498 bool _ok; |
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2499 public: |
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2500 VerifyOopsClosure(nmethod* nm) : _nm(nm), _ok(true) { } |
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2501 bool ok() { return _ok; } |
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2502 virtual void do_oop(oop* p) { |
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2503 if ((*p) == NULL || (*p)->is_oop()) return; |
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2504 if (_ok) { |
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changeset
|
2505 _nm->print_nmethod(true); |
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|
2506 _ok = false; |
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|
2507 } |
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|
2508 tty->print_cr("*** non-oop "PTR_FORMAT" found at "PTR_FORMAT" (offset %d)", |
12316
190899198332
7195622: CheckUnhandledOops has limited usefulness now
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|
2509 (void *)(*p), (intptr_t)p, (int)((intptr_t)p - (intptr_t)_nm)); |
989
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|
2510 } |
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|
2511 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
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|
2512 }; |
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|
2513 |
0 | 2514 void nmethod::verify() { |
2515 | |
2516 // Hmm. OSR methods can be deopted but not marked as zombie or not_entrant | |
2517 // seems odd. | |
2518 | |
2519 if( is_zombie() || is_not_entrant() ) | |
2520 return; | |
2521 | |
2522 // Make sure all the entry points are correctly aligned for patching. | |
2523 NativeJump::check_verified_entry_alignment(entry_point(), verified_entry_point()); | |
2524 | |
6725
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|
2525 // assert(method()->is_oop(), "must be valid"); |
0 | 2526 |
2527 ResourceMark rm; | |
2528 | |
2529 if (!CodeCache::contains(this)) { | |
1490
f03d0a26bf83
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jcoomes
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diff
changeset
|
2530 fatal(err_msg("nmethod at " INTPTR_FORMAT " not in zone", this)); |
0 | 2531 } |
2532 | |
2533 if(is_native_method() ) | |
2534 return; | |
2535 | |
2536 nmethod* nm = CodeCache::find_nmethod(verified_entry_point()); | |
2537 if (nm != this) { | |
1490
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|
2538 fatal(err_msg("findNMethod did not find this nmethod (" INTPTR_FORMAT ")", |
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diff
changeset
|
2539 this)); |
0 | 2540 } |
2541 | |
2542 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
2543 if (! p->verify(this)) { | |
2544 tty->print_cr("\t\tin nmethod at " INTPTR_FORMAT " (pcs)", this); | |
2545 } | |
2546 } | |
2547 | |
989
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|
2548 VerifyOopsClosure voc(this); |
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|
2549 oops_do(&voc); |
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|
2550 assert(voc.ok(), "embedded oops must be OK"); |
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|
2551 verify_scavenge_root_oops(); |
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|
2552 |
0 | 2553 verify_scopes(); |
2554 } | |
2555 | |
2556 | |
2557 void nmethod::verify_interrupt_point(address call_site) { | |
13071
e2509677809c
8023037: Race between ciEnv::register_method and nmethod::make_not_entrant_or_zombie
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diff
changeset
|
2558 // Verify IC only when nmethod installation is finished. |
13441 | 2559 bool is_installed = (method()->code() == this) // nmethod is in state 'in_use' and installed |
2560 || !this->is_in_use(); // nmethod is installed, but not in 'in_use' state | |
13071
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diff
changeset
|
2561 if (is_installed) { |
e2509677809c
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diff
changeset
|
2562 Thread *cur = Thread::current(); |
e2509677809c
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|
2563 if (CompiledIC_lock->owner() == cur || |
e2509677809c
8023037: Race between ciEnv::register_method and nmethod::make_not_entrant_or_zombie
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diff
changeset
|
2564 ((cur->is_VM_thread() || cur->is_ConcurrentGC_thread()) && |
e2509677809c
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diff
changeset
|
2565 SafepointSynchronize::is_at_safepoint())) { |
e2509677809c
8023037: Race between ciEnv::register_method and nmethod::make_not_entrant_or_zombie
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|
2566 CompiledIC_at(this, call_site); |
e2509677809c
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|
2567 CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops()); |
e2509677809c
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|
2568 } else { |
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changeset
|
2569 MutexLocker ml_verify (CompiledIC_lock); |
e2509677809c
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|
2570 CompiledIC_at(this, call_site); |
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|
2571 } |
0 | 2572 } |
13071
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|
2573 |
e2509677809c
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|
2574 PcDesc* pd = pc_desc_at(nativeCall_at(call_site)->return_address()); |
0 | 2575 assert(pd != NULL, "PcDesc must exist"); |
2576 for (ScopeDesc* sd = new ScopeDesc(this, pd->scope_decode_offset(), | |
9707 | 2577 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")
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1250
diff
changeset
|
2578 pd->return_oop()); |
0 | 2579 !sd->is_top(); sd = sd->sender()) { |
2580 sd->verify(); | |
2581 } | |
2582 } | |
2583 | |
2584 void nmethod::verify_scopes() { | |
2585 if( !method() ) return; // Runtime stubs have no scope | |
2586 if (method()->is_native()) return; // Ignore stub methods. | |
2587 // iterate through all interrupt point | |
2588 // and verify the debug information is valid. | |
2589 RelocIterator iter((nmethod*)this); | |
2590 while (iter.next()) { | |
2591 address stub = NULL; | |
2592 switch (iter.type()) { | |
2593 case relocInfo::virtual_call_type: | |
2594 verify_interrupt_point(iter.addr()); | |
2595 break; | |
2596 case relocInfo::opt_virtual_call_type: | |
2597 stub = iter.opt_virtual_call_reloc()->static_stub(); | |
2598 verify_interrupt_point(iter.addr()); | |
2599 break; | |
2600 case relocInfo::static_call_type: | |
2601 stub = iter.static_call_reloc()->static_stub(); | |
2602 //verify_interrupt_point(iter.addr()); | |
2603 break; | |
2604 case relocInfo::runtime_call_type: | |
2605 address destination = iter.reloc()->value(); | |
2606 // Right now there is no way to find out which entries support | |
2607 // an interrupt point. It would be nice if we had this | |
2608 // information in a table. | |
2609 break; | |
2610 } | |
2611 assert(stub == NULL || stub_contains(stub), "static call stub outside stub section"); | |
2612 } | |
2613 } | |
2614 | |
2615 | |
2616 // ----------------------------------------------------------------------------- | |
2617 // Non-product code | |
2618 #ifndef PRODUCT | |
2619 | |
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2620 class DebugScavengeRoot: public OopClosure { |
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diff
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|
2621 nmethod* _nm; |
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diff
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|
2622 bool _ok; |
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diff
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|
2623 public: |
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diff
changeset
|
2624 DebugScavengeRoot(nmethod* nm) : _nm(nm), _ok(true) { } |
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jrose
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931
diff
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|
2625 bool ok() { return _ok; } |
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diff
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|
2626 virtual void do_oop(oop* p) { |
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jrose
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931
diff
changeset
|
2627 if ((*p) == NULL || !(*p)->is_scavengable()) return; |
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jrose
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931
diff
changeset
|
2628 if (_ok) { |
148e5441d916
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jrose
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931
diff
changeset
|
2629 _nm->print_nmethod(true); |
148e5441d916
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jrose
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931
diff
changeset
|
2630 _ok = false; |
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jrose
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931
diff
changeset
|
2631 } |
3377
2aa9ddbb9e60
7041789: 30% perf regression with c2/arm following 7017732
jmasa
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2405
diff
changeset
|
2632 tty->print_cr("*** scavengable oop "PTR_FORMAT" found at "PTR_FORMAT" (offset %d)", |
12316
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7195622: CheckUnhandledOops has limited usefulness now
hseigel
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12175
diff
changeset
|
2633 (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
|
2634 (*p)->print(); |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
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931
diff
changeset
|
2635 } |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
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931
diff
changeset
|
2636 virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
148e5441d916
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jrose
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931
diff
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|
2637 }; |
0 | 2638 |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2639 void nmethod::verify_scavenge_root_oops() { |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
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931
diff
changeset
|
2640 if (!on_scavenge_root_list()) { |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
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931
diff
changeset
|
2641 // Actually look inside, to verify the claim that it's clean. |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
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931
diff
changeset
|
2642 DebugScavengeRoot debug_scavenge_root(this); |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
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931
diff
changeset
|
2643 oops_do(&debug_scavenge_root); |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
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931
diff
changeset
|
2644 if (!debug_scavenge_root.ok()) |
3377
2aa9ddbb9e60
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
2405
diff
changeset
|
2645 fatal("found an unadvertised bad scavengable oop in the code cache"); |
0 | 2646 } |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
931
diff
changeset
|
2647 assert(scavenge_root_not_marked(), ""); |
0 | 2648 } |
2649 | |
100
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30
diff
changeset
|
2650 #endif // PRODUCT |
0 | 2651 |
2652 // Printing operations | |
2653 | |
2654 void nmethod::print() const { | |
2655 ResourceMark rm; | |
2656 ttyLocker ttyl; // keep the following output all in one block | |
2657 | |
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2376
diff
changeset
|
2658 tty->print("Compiled method "); |
0 | 2659 |
2660 if (is_compiled_by_c1()) { | |
2661 tty->print("(c1) "); | |
2662 } else if (is_compiled_by_c2()) { | |
2663 tty->print("(c2) "); | |
1692 | 2664 } else if (is_compiled_by_shark()) { |
2665 tty->print("(shark) "); | |
9707 | 2666 } else if (is_compiled_by_graal()) { |
2667 tty->print("(Graal) "); | |
0 | 2668 } else { |
2669 tty->print("(nm) "); | |
2670 } | |
2671 | |
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2376
diff
changeset
|
2672 print_on(tty, NULL); |
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2376
diff
changeset
|
2673 |
0 | 2674 if (WizardMode) { |
2675 tty->print("((nmethod*) "INTPTR_FORMAT ") ", this); | |
2676 tty->print(" for method " INTPTR_FORMAT , (address)method()); | |
2677 tty->print(" { "); | |
2678 if (is_in_use()) tty->print("in_use "); | |
2679 if (is_not_entrant()) tty->print("not_entrant "); | |
2680 if (is_zombie()) tty->print("zombie "); | |
2681 if (is_unloaded()) tty->print("unloaded "); | |
989
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jrose
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931
diff
changeset
|
2682 if (on_scavenge_root_list()) tty->print("scavenge_root "); |
0 | 2683 tty->print_cr("}:"); |
2684 } | |
2685 if (size () > 0) tty->print_cr(" total in heap [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2686 (address)this, | |
2687 (address)this + size(), | |
2688 size()); | |
2689 if (relocation_size () > 0) tty->print_cr(" relocation [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2690 relocation_begin(), | |
2691 relocation_end(), | |
2692 relocation_size()); | |
1762
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
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1748
diff
changeset
|
2693 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
|
2694 consts_begin(), |
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
2695 consts_end(), |
0878d7bae69f
6961697: move nmethod constants section before instruction section
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1748
diff
changeset
|
2696 consts_size()); |
1748 | 2697 if (insts_size () > 0) tty->print_cr(" main code [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
2698 insts_begin(), | |
2699 insts_end(), | |
2700 insts_size()); | |
0 | 2701 if (stub_size () > 0) tty->print_cr(" stub code [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
2702 stub_begin(), | |
2703 stub_end(), | |
2704 stub_size()); | |
1563
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
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1538
diff
changeset
|
2705 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
|
2706 oops_begin(), |
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
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1538
diff
changeset
|
2707 oops_end(), |
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
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1538
diff
changeset
|
2708 oops_size()); |
6725
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coleenp
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|
2709 if (metadata_size () > 0) tty->print_cr(" metadata [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
da91efe96a93
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coleenp
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6266
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|
2710 metadata_begin(), |
da91efe96a93
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coleenp
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6266
diff
changeset
|
2711 metadata_end(), |
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6266
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|
2712 metadata_size()); |
0 | 2713 if (scopes_data_size () > 0) tty->print_cr(" scopes data [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", |
2714 scopes_data_begin(), | |
2715 scopes_data_end(), | |
2716 scopes_data_size()); | |
2717 if (scopes_pcs_size () > 0) tty->print_cr(" scopes pcs [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2718 scopes_pcs_begin(), | |
2719 scopes_pcs_end(), | |
2720 scopes_pcs_size()); | |
2721 if (dependencies_size () > 0) tty->print_cr(" dependencies [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2722 dependencies_begin(), | |
2723 dependencies_end(), | |
2724 dependencies_size()); | |
2725 if (handler_table_size() > 0) tty->print_cr(" handler table [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2726 handler_table_begin(), | |
2727 handler_table_end(), | |
2728 handler_table_size()); | |
2729 if (nul_chk_table_size() > 0) tty->print_cr(" nul chk table [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d", | |
2730 nul_chk_table_begin(), | |
2731 nul_chk_table_end(), | |
2732 nul_chk_table_size()); | |
2733 } | |
2734 | |
100
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changeset
|
2735 void nmethod::print_code() { |
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diff
changeset
|
2736 HandleMark hm; |
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changeset
|
2737 ResourceMark m; |
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diff
changeset
|
2738 Disassembler::decode(this); |
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diff
changeset
|
2739 } |
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changeset
|
2740 |
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changeset
|
2741 |
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changeset
|
2742 #ifndef PRODUCT |
0 | 2743 |
2744 void nmethod::print_scopes() { | |
2745 // Find the first pc desc for all scopes in the code and print it. | |
2746 ResourceMark rm; | |
2747 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
2748 if (p->scope_decode_offset() == DebugInformationRecorder::serialized_null) | |
2749 continue; | |
2750 | |
2751 ScopeDesc* sd = scope_desc_at(p->real_pc(this)); | |
2752 sd->print_on(tty, p); | |
2753 } | |
2754 } | |
2755 | |
2756 void nmethod::print_dependencies() { | |
2757 ResourceMark rm; | |
2758 ttyLocker ttyl; // keep the following output all in one block | |
2759 tty->print_cr("Dependencies:"); | |
2760 for (Dependencies::DepStream deps(this); deps.next(); ) { | |
2761 deps.print_dependency(); | |
6725
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2762 Klass* ctxk = deps.context_type(); |
0 | 2763 if (ctxk != NULL) { |
6983 | 2764 if (ctxk->oop_is_instance() && ((InstanceKlass*)ctxk)->is_dependent_nmethod(this)) { |
2765 tty->print_cr(" [nmethod<=klass]%s", ctxk->external_name()); | |
0 | 2766 } |
2767 } | |
2768 deps.log_dependency(); // put it into the xml log also | |
2769 } | |
2770 } | |
2771 | |
2772 | |
2773 void nmethod::print_relocations() { | |
2774 ResourceMark m; // in case methods get printed via the debugger | |
2775 tty->print_cr("relocations:"); | |
2776 RelocIterator iter(this); | |
2777 iter.print(); | |
2778 if (UseRelocIndex) { | |
2779 jint* index_end = (jint*)relocation_end() - 1; | |
2780 jint index_size = *index_end; | |
2781 jint* index_start = (jint*)( (address)index_end - index_size ); | |
2782 tty->print_cr(" index @" INTPTR_FORMAT ": index_size=%d", index_start, index_size); | |
2783 if (index_size > 0) { | |
2784 jint* ip; | |
2785 for (ip = index_start; ip+2 <= index_end; ip += 2) | |
2786 tty->print_cr(" (%d %d) addr=" INTPTR_FORMAT " @" INTPTR_FORMAT, | |
2787 ip[0], | |
2788 ip[1], | |
2789 header_end()+ip[0], | |
2790 relocation_begin()-1+ip[1]); | |
2791 for (; ip < index_end; ip++) | |
2792 tty->print_cr(" (%d ?)", ip[0]); | |
10973
ef57c43512d6
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diff
changeset
|
2793 tty->print_cr(" @" INTPTR_FORMAT ": index_size=%d", ip, *ip); |
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diff
changeset
|
2794 ip++; |
0 | 2795 tty->print_cr("reloc_end @" INTPTR_FORMAT ":", ip); |
2796 } | |
2797 } | |
2798 } | |
2799 | |
2800 | |
2801 void nmethod::print_pcs() { | |
2802 ResourceMark m; // in case methods get printed via debugger | |
2803 tty->print_cr("pc-bytecode offsets:"); | |
2804 for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) { | |
2805 p->print(this); | |
2806 } | |
2807 } | |
2808 | |
100
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30
diff
changeset
|
2809 #endif // PRODUCT |
0 | 2810 |
2811 const char* nmethod::reloc_string_for(u_char* begin, u_char* end) { | |
2812 RelocIterator iter(this, begin, end); | |
2813 bool have_one = false; | |
2814 while (iter.next()) { | |
2815 have_one = true; | |
2816 switch (iter.type()) { | |
2817 case relocInfo::none: return "no_reloc"; | |
2818 case relocInfo::oop_type: { | |
2819 stringStream st; | |
2820 oop_Relocation* r = iter.oop_reloc(); | |
2821 oop obj = r->oop_value(); | |
2822 st.print("oop("); | |
2823 if (obj == NULL) st.print("NULL"); | |
2824 else obj->print_value_on(&st); | |
2825 st.print(")"); | |
2826 return st.as_string(); | |
2827 } | |
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|
2828 case relocInfo::metadata_type: { |
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6964458: Reimplement class meta-data storage to use native memory
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changeset
|
2829 stringStream st; |
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6964458: Reimplement class meta-data storage to use native memory
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changeset
|
2830 metadata_Relocation* r = iter.metadata_reloc(); |
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diff
changeset
|
2831 Metadata* obj = r->metadata_value(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2832 st.print("metadata("); |
da91efe96a93
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changeset
|
2833 if (obj == NULL) st.print("NULL"); |
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diff
changeset
|
2834 else obj->print_value_on(&st); |
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diff
changeset
|
2835 st.print(")"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2836 return st.as_string(); |
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changeset
|
2837 } |
0 | 2838 case relocInfo::virtual_call_type: return "virtual_call"; |
2839 case relocInfo::opt_virtual_call_type: return "optimized virtual_call"; | |
2840 case relocInfo::static_call_type: return "static_call"; | |
2841 case relocInfo::static_stub_type: return "static_stub"; | |
2842 case relocInfo::runtime_call_type: return "runtime_call"; | |
2843 case relocInfo::external_word_type: return "external_word"; | |
2844 case relocInfo::internal_word_type: return "internal_word"; | |
2845 case relocInfo::section_word_type: return "section_word"; | |
2846 case relocInfo::poll_type: return "poll"; | |
2847 case relocInfo::poll_return_type: return "poll_return"; | |
2848 case relocInfo::type_mask: return "type_bit_mask"; | |
2849 } | |
2850 } | |
2851 return have_one ? "other" : NULL; | |
2852 } | |
2853 | |
2854 // Return a the last scope in (begin..end] | |
2855 ScopeDesc* nmethod::scope_desc_in(address begin, address end) { | |
2856 PcDesc* p = pc_desc_near(begin+1); | |
2857 if (p != NULL && p->real_pc(this) <= end) { | |
2858 return new ScopeDesc(this, p->scope_decode_offset(), | |
9707 | 2859 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
|
2860 p->return_oop()); |
0 | 2861 } |
2862 return NULL; | |
2863 } | |
2864 | |
6796
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
parents:
6792
diff
changeset
|
2865 void nmethod::print_nmethod_labels(outputStream* stream, address block_begin) const { |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
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diff
changeset
|
2866 if (block_begin == entry_point()) stream->print_cr("[Entry Point]"); |
4e6abf09f540
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jrose
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diff
changeset
|
2867 if (block_begin == verified_entry_point()) stream->print_cr("[Verified Entry Point]"); |
9707 | 2868 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
|
2869 if (block_begin == stub_begin()) stream->print_cr("[Stub Code]"); |
9707 | 2870 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
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parents:
1644
diff
changeset
|
2871 |
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
twisti
parents:
1644
diff
changeset
|
2872 if (has_method_handle_invokes()) |
4a665be40fd3
6975855: don't emit deopt MH handler in C1 if not required
twisti
parents:
1644
diff
changeset
|
2873 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
|
2874 |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
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1141
diff
changeset
|
2875 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
|
2876 |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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1141
diff
changeset
|
2877 if (block_begin == entry_point()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2878 methodHandle m = method(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2879 if (m.not_null()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2880 stream->print(" # "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2881 m->print_value_on(stream); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2882 stream->cr(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2883 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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1141
diff
changeset
|
2884 if (m.not_null() && !is_osr_method()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2885 ResourceMark rm; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2886 int sizeargs = m->size_of_parameters(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2887 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
|
2888 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, sizeargs); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2889 { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2890 int sig_index = 0; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2891 if (!m->is_static()) |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2892 sig_bt[sig_index++] = T_OBJECT; // 'this' |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2893 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
|
2894 BasicType t = ss.type(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2895 sig_bt[sig_index++] = t; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2896 if (type2size[t] == 2) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2897 sig_bt[sig_index++] = T_VOID; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2898 } else { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2899 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
|
2900 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2901 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2902 assert(sig_index == sizeargs, ""); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2903 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2904 const char* spname = "sp"; // make arch-specific? |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2905 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
|
2906 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
|
2907 int tab1 = 14, tab2 = 24; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2908 int sig_index = 0; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2909 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
|
2910 bool did_old_sp = false; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2911 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
|
2912 bool at_this = (arg_index == -1); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2913 bool at_old_sp = false; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2914 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
|
2915 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
|
2916 if (at_this) |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2917 stream->print(" # this: "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2918 else |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2919 stream->print(" # parm%d: ", arg_index); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2920 stream->move_to(tab1); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2921 VMReg fst = regs[sig_index].first(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2922 VMReg snd = regs[sig_index].second(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2923 if (fst->is_reg()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2924 stream->print("%s", fst->name()); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2925 if (snd->is_valid()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2926 stream->print(":%s", snd->name()); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2927 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2928 } else if (fst->is_stack()) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2929 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
|
2930 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
|
2931 stream->print("[%s+0x%x]", spname, offset); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2932 } else { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2933 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
|
2934 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2935 stream->print(" "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2936 stream->move_to(tab2); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2937 stream->print("= "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2938 if (at_this) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2939 m->method_holder()->print_value_on(stream); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2940 } else { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2941 bool did_name = false; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
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parents:
1141
diff
changeset
|
2942 if (!at_this && ss.is_object()) { |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2142
diff
changeset
|
2943 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
|
2944 if (name != NULL) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2945 name->print_value_on(stream); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2946 did_name = true; |
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 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2949 if (!did_name) |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2950 stream->print("%s", type2name(t)); |
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 if (at_old_sp) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2953 stream->print(" (%s of caller)", spname); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2954 did_old_sp = true; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2955 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2956 stream->cr(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2957 sig_index += type2size[t]; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2958 arg_index += 1; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2959 if (!at_this) ss.next(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2960 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2961 if (!did_old_sp) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2962 stream->print(" # "); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2963 stream->move_to(tab1); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2964 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
|
2965 stream->print(" (%s of caller)", spname); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2966 stream->cr(); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2967 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2968 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2969 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2970 } |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1141
diff
changeset
|
2971 |
0 | 2972 void nmethod::print_code_comment_on(outputStream* st, int column, u_char* begin, u_char* end) { |
2973 // First, find an oopmap in (begin, end]. | |
2974 // We use the odd half-closed interval so that oop maps and scope descs | |
2975 // which are tied to the byte after a call are printed with the call itself. | |
1748 | 2976 address base = code_begin(); |
0 | 2977 OopMapSet* oms = oop_maps(); |
2978 if (oms != NULL) { | |
2979 for (int i = 0, imax = oms->size(); i < imax; i++) { | |
2980 OopMap* om = oms->at(i); | |
2981 address pc = base + om->offset(); | |
2982 if (pc > begin) { | |
2983 if (pc <= end) { | |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
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parents:
30
diff
changeset
|
2984 st->move_to(column); |
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2985 st->print("; "); |
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2986 om->print_on(st); |
0 | 2987 } |
2988 break; | |
2989 } | |
2990 } | |
2991 } | |
100
c7c777385a15
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jrose
parents:
30
diff
changeset
|
2992 |
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
2993 // Print any debug info present at this pc. |
0 | 2994 ScopeDesc* sd = scope_desc_in(begin, end); |
2995 if (sd != NULL) { | |
100
c7c777385a15
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jrose
parents:
30
diff
changeset
|
2996 st->move_to(column); |
0 | 2997 if (sd->bci() == SynchronizationEntryBCI) { |
2998 st->print(";*synchronization entry"); | |
2999 } else { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3000 if (sd->method() == NULL) { |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
3001 st->print("method is NULL"); |
0 | 3002 } else if (sd->method()->is_native()) { |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
3003 st->print("method is native"); |
0 | 3004 } else { |
2142 | 3005 Bytecodes::Code bc = sd->method()->java_code_at(sd->bci()); |
0 | 3006 st->print(";*%s", Bytecodes::name(bc)); |
3007 switch (bc) { | |
3008 case Bytecodes::_invokevirtual: | |
3009 case Bytecodes::_invokespecial: | |
3010 case Bytecodes::_invokestatic: | |
3011 case Bytecodes::_invokeinterface: | |
3012 { | |
2142 | 3013 Bytecode_invoke invoke(sd->method(), sd->bci()); |
0 | 3014 st->print(" "); |
2142 | 3015 if (invoke.name() != NULL) |
3016 invoke.name()->print_symbol_on(st); | |
0 | 3017 else |
3018 st->print("<UNKNOWN>"); | |
3019 break; | |
3020 } | |
3021 case Bytecodes::_getfield: | |
3022 case Bytecodes::_putfield: | |
3023 case Bytecodes::_getstatic: | |
3024 case Bytecodes::_putstatic: | |
3025 { | |
2142 | 3026 Bytecode_field field(sd->method(), sd->bci()); |
0 | 3027 st->print(" "); |
2142 | 3028 if (field.name() != NULL) |
3029 field.name()->print_symbol_on(st); | |
0 | 3030 else |
3031 st->print("<UNKNOWN>"); | |
3032 } | |
3033 } | |
3034 } | |
3035 } | |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
3036 |
0 | 3037 // Print all scopes |
3038 for (;sd != NULL; sd = sd->sender()) { | |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
3039 st->move_to(column); |
0 | 3040 st->print("; -"); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3041 if (sd->method() == NULL) { |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
3042 st->print("method is NULL"); |
0 | 3043 } else { |
3044 sd->method()->print_short_name(st); | |
3045 } | |
3046 int lineno = sd->method()->line_number_from_bci(sd->bci()); | |
3047 if (lineno != -1) { | |
3048 st->print("@%d (line %d)", sd->bci(), lineno); | |
3049 } else { | |
3050 st->print("@%d", sd->bci()); | |
3051 } | |
3052 st->cr(); | |
3053 } | |
3054 } | |
3055 | |
3056 // Print relocation information | |
3057 const char* str = reloc_string_for(begin, end); | |
3058 if (str != NULL) { | |
3059 if (sd != NULL) st->cr(); | |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
3060 st->move_to(column); |
0 | 3061 st->print("; {%s}", str); |
3062 } | |
1748 | 3063 int cont_offset = ImplicitExceptionTable(this).at(begin - code_begin()); |
0 | 3064 if (cont_offset != 0) { |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
3065 st->move_to(column); |
1748 | 3066 st->print("; implicit exception: dispatches to " INTPTR_FORMAT, code_begin() + cont_offset); |
0 | 3067 } |
3068 | |
3069 } | |
3070 | |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
3071 #ifndef PRODUCT |
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
30
diff
changeset
|
3072 |
0 | 3073 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
|
3074 st->print("nmethod"); |
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2376
diff
changeset
|
3075 print_on(st, NULL); |
0 | 3076 } |
3077 | |
3078 void nmethod::print_calls(outputStream* st) { | |
3079 RelocIterator iter(this); | |
3080 while (iter.next()) { | |
3081 switch (iter.type()) { | |
3082 case relocInfo::virtual_call_type: | |
3083 case relocInfo::opt_virtual_call_type: { | |
3084 VerifyMutexLocker mc(CompiledIC_lock); | |
3085 CompiledIC_at(iter.reloc())->print(); | |
3086 break; | |
3087 } | |
3088 case relocInfo::static_call_type: | |
3089 st->print_cr("Static call at " INTPTR_FORMAT, iter.reloc()->addr()); | |
3090 compiledStaticCall_at(iter.reloc())->print(); | |
3091 break; | |
3092 } | |
3093 } | |
3094 } | |
3095 | |
3096 void nmethod::print_handler_table() { | |
3097 ExceptionHandlerTable(this).print(); | |
3098 } | |
3099 | |
3100 void nmethod::print_nul_chk_table() { | |
1748 | 3101 ImplicitExceptionTable(this).print(code_begin()); |
0 | 3102 } |
14733
b10e42998d01
nmethod: fix -XX:+PrintNMethodStatistics
Bernhard Urban <bernhard.urban@jku.at>
parents:
14726
diff
changeset
|
3103 #endif // PRODUCT |
0 | 3104 |
3105 void nmethod::print_statistics() { | |
3106 ttyLocker ttyl; | |
3107 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
|
3108 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
|
3109 #ifdef COMPILER1 |
7fedc59e2cdc
Split code cache stats for the different compilers
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12414
diff
changeset
|
3110 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
|
3111 #endif |
7fedc59e2cdc
Split code cache stats for the different compilers
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12414
diff
changeset
|
3112 #ifdef COMPILER2 |
7fedc59e2cdc
Split code cache stats for the different compilers
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12414
diff
changeset
|
3113 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
|
3114 #endif |
7fedc59e2cdc
Split code cache stats for the different compilers
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12414
diff
changeset
|
3115 #ifdef GRAAL |
7fedc59e2cdc
Split code cache stats for the different compilers
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12414
diff
changeset
|
3116 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
|
3117 #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
|
3118 #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
|
3119 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
|
3120 #endif |
12758
ca33948fb804
nmethod.cpp: s/unknwon/unknown/
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12704
diff
changeset
|
3121 unknown_java_nmethod_stats.print_nmethod_stats("Unknown"); |
0 | 3122 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
|
3123 #ifndef PRODUCT |
12675
7fedc59e2cdc
Split code cache stats for the different compilers
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12414
diff
changeset
|
3124 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
|
3125 #endif |
0 | 3126 Dependencies::print_statistics(); |
3127 if (xtty != NULL) xtty->tail("statistics"); | |
3128 } |