Mercurial > hg > truffle
annotate src/share/vm/code/codeCache.cpp @ 10939:f22cbff51c12
Remove forced addition of Graal's oop during weak root processing (creates race condition)
| author | Christos Kotselidis <christos.kotselidis@oracle.com> |
|---|---|
| date | Fri, 02 Aug 2013 13:31:31 +0200 |
| parents | 836a62f43af9 |
| children | cefad50507d8 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 10405 | 2 * Copyright (c) 1997, 2013, 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/codeBlob.hpp" | |
| 27 #include "code/codeCache.hpp" | |
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28 #include "code/compiledIC.hpp" |
| 1972 | 29 #include "code/dependencies.hpp" |
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30 #include "code/icBuffer.hpp" |
| 1972 | 31 #include "code/nmethod.hpp" |
| 32 #include "code/pcDesc.hpp" | |
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33 #include "compiler/compileBroker.hpp" |
| 1972 | 34 #include "gc_implementation/shared/markSweep.hpp" |
| 35 #include "memory/allocation.inline.hpp" | |
| 36 #include "memory/gcLocker.hpp" | |
| 37 #include "memory/iterator.hpp" | |
| 38 #include "memory/resourceArea.hpp" | |
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39 #include "oops/method.hpp" |
| 1972 | 40 #include "oops/objArrayOop.hpp" |
| 41 #include "oops/oop.inline.hpp" | |
| 42 #include "runtime/handles.inline.hpp" | |
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43 #include "runtime/arguments.hpp" |
| 1972 | 44 #include "runtime/icache.hpp" |
| 45 #include "runtime/java.hpp" | |
| 46 #include "runtime/mutexLocker.hpp" | |
| 47 #include "services/memoryService.hpp" | |
| 10405 | 48 #include "trace/tracing.hpp" |
| 1972 | 49 #include "utilities/xmlstream.hpp" |
| 0 | 50 |
| 51 // Helper class for printing in CodeCache | |
| 52 | |
| 53 class CodeBlob_sizes { | |
| 54 private: | |
| 55 int count; | |
| 56 int total_size; | |
| 57 int header_size; | |
| 58 int code_size; | |
| 59 int stub_size; | |
| 60 int relocation_size; | |
| 61 int scopes_oop_size; | |
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62 int scopes_metadata_size; |
| 0 | 63 int scopes_data_size; |
| 64 int scopes_pcs_size; | |
| 65 | |
| 66 public: | |
| 67 CodeBlob_sizes() { | |
| 68 count = 0; | |
| 69 total_size = 0; | |
| 70 header_size = 0; | |
| 71 code_size = 0; | |
| 72 stub_size = 0; | |
| 73 relocation_size = 0; | |
| 74 scopes_oop_size = 0; | |
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75 scopes_metadata_size = 0; |
| 0 | 76 scopes_data_size = 0; |
| 77 scopes_pcs_size = 0; | |
| 78 } | |
| 79 | |
| 80 int total() { return total_size; } | |
| 81 bool is_empty() { return count == 0; } | |
| 82 | |
| 83 void print(const char* title) { | |
| 84 tty->print_cr(" #%d %s = %dK (hdr %d%%, loc %d%%, code %d%%, stub %d%%, [oops %d%%, data %d%%, pcs %d%%])", | |
| 85 count, | |
| 86 title, | |
| 87 total() / K, | |
| 88 header_size * 100 / total_size, | |
| 89 relocation_size * 100 / total_size, | |
| 90 code_size * 100 / total_size, | |
| 91 stub_size * 100 / total_size, | |
| 92 scopes_oop_size * 100 / total_size, | |
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93 scopes_metadata_size * 100 / total_size, |
| 0 | 94 scopes_data_size * 100 / total_size, |
| 95 scopes_pcs_size * 100 / total_size); | |
| 96 } | |
| 97 | |
| 98 void add(CodeBlob* cb) { | |
| 99 count++; | |
| 100 total_size += cb->size(); | |
| 101 header_size += cb->header_size(); | |
| 102 relocation_size += cb->relocation_size(); | |
| 103 if (cb->is_nmethod()) { | |
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104 nmethod* nm = cb->as_nmethod_or_null(); |
| 1748 | 105 code_size += nm->insts_size(); |
| 0 | 106 stub_size += nm->stub_size(); |
| 107 | |
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108 scopes_oop_size += nm->oops_size(); |
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109 scopes_metadata_size += nm->metadata_size(); |
| 0 | 110 scopes_data_size += nm->scopes_data_size(); |
| 111 scopes_pcs_size += nm->scopes_pcs_size(); | |
| 112 } else { | |
| 1748 | 113 code_size += cb->code_size(); |
| 0 | 114 } |
| 115 } | |
| 116 }; | |
| 117 | |
| 118 // CodeCache implementation | |
| 119 | |
| 120 CodeHeap * CodeCache::_heap = new CodeHeap(); | |
| 121 int CodeCache::_number_of_blobs = 0; | |
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122 int CodeCache::_number_of_adapters = 0; |
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123 int CodeCache::_number_of_nmethods = 0; |
| 0 | 124 int CodeCache::_number_of_nmethods_with_dependencies = 0; |
| 125 bool CodeCache::_needs_cache_clean = false; | |
| 989 | 126 nmethod* CodeCache::_scavenge_root_nmethods = NULL; |
| 1202 | 127 nmethod* CodeCache::_saved_nmethods = NULL; |
| 0 | 128 |
| 10405 | 129 int CodeCache::_codemem_full_count = 0; |
| 0 | 130 |
| 131 CodeBlob* CodeCache::first() { | |
| 132 assert_locked_or_safepoint(CodeCache_lock); | |
| 133 return (CodeBlob*)_heap->first(); | |
| 134 } | |
| 135 | |
| 136 | |
| 137 CodeBlob* CodeCache::next(CodeBlob* cb) { | |
| 138 assert_locked_or_safepoint(CodeCache_lock); | |
| 139 return (CodeBlob*)_heap->next(cb); | |
| 140 } | |
| 141 | |
| 142 | |
| 143 CodeBlob* CodeCache::alive(CodeBlob *cb) { | |
| 144 assert_locked_or_safepoint(CodeCache_lock); | |
| 145 while (cb != NULL && !cb->is_alive()) cb = next(cb); | |
| 146 return cb; | |
| 147 } | |
| 148 | |
| 149 | |
| 150 nmethod* CodeCache::alive_nmethod(CodeBlob* cb) { | |
| 151 assert_locked_or_safepoint(CodeCache_lock); | |
| 152 while (cb != NULL && (!cb->is_alive() || !cb->is_nmethod())) cb = next(cb); | |
| 153 return (nmethod*)cb; | |
| 154 } | |
| 155 | |
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156 nmethod* CodeCache::first_nmethod() { |
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157 assert_locked_or_safepoint(CodeCache_lock); |
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158 CodeBlob* cb = first(); |
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159 while (cb != NULL && !cb->is_nmethod()) { |
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160 cb = next(cb); |
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161 } |
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162 return (nmethod*)cb; |
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163 } |
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164 |
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165 nmethod* CodeCache::next_nmethod (CodeBlob* cb) { |
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166 assert_locked_or_safepoint(CodeCache_lock); |
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167 cb = next(cb); |
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168 while (cb != NULL && !cb->is_nmethod()) { |
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169 cb = next(cb); |
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170 } |
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171 return (nmethod*)cb; |
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172 } |
| 0 | 173 |
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174 static size_t maxCodeCacheUsed = 0; |
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175 |
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176 CodeBlob* CodeCache::allocate(int size, bool is_critical) { |
| 0 | 177 // Do not seize the CodeCache lock here--if the caller has not |
| 178 // already done so, we are going to lose bigtime, since the code | |
| 179 // cache will contain a garbage CodeBlob until the caller can | |
| 180 // run the constructor for the CodeBlob subclass he is busy | |
| 181 // instantiating. | |
| 182 guarantee(size >= 0, "allocation request must be reasonable"); | |
| 183 assert_locked_or_safepoint(CodeCache_lock); | |
| 184 CodeBlob* cb = NULL; | |
| 185 _number_of_blobs++; | |
| 186 while (true) { | |
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187 cb = (CodeBlob*)_heap->allocate(size, is_critical); |
| 0 | 188 if (cb != NULL) break; |
| 189 if (!_heap->expand_by(CodeCacheExpansionSize)) { | |
| 190 // Expansion failed | |
| 191 return NULL; | |
| 192 } | |
| 193 if (PrintCodeCacheExtension) { | |
| 194 ResourceMark rm; | |
| 195 tty->print_cr("code cache extended to [" INTPTR_FORMAT ", " INTPTR_FORMAT "] (%d bytes)", | |
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196 (intptr_t)_heap->low_boundary(), (intptr_t)_heap->high(), |
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197 (address)_heap->high() - (address)_heap->low_boundary()); |
| 0 | 198 } |
| 199 } | |
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200 maxCodeCacheUsed = MAX2(maxCodeCacheUsed, ((address)_heap->high_boundary() - |
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201 (address)_heap->low_boundary()) - unallocated_capacity()); |
| 0 | 202 verify_if_often(); |
| 989 | 203 print_trace("allocation", cb, size); |
| 0 | 204 return cb; |
| 205 } | |
| 206 | |
| 207 void CodeCache::free(CodeBlob* cb) { | |
| 208 assert_locked_or_safepoint(CodeCache_lock); | |
| 209 verify_if_often(); | |
| 210 | |
| 989 | 211 print_trace("free", cb); |
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212 if (cb->is_nmethod()) { |
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213 _number_of_nmethods--; |
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214 if (((nmethod *)cb)->has_dependencies()) { |
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215 _number_of_nmethods_with_dependencies--; |
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216 } |
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217 } |
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218 if (cb->is_adapter_blob()) { |
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219 _number_of_adapters--; |
| 0 | 220 } |
| 221 _number_of_blobs--; | |
| 222 | |
| 223 _heap->deallocate(cb); | |
| 224 | |
| 225 verify_if_often(); | |
| 226 assert(_number_of_blobs >= 0, "sanity check"); | |
| 227 } | |
| 228 | |
| 229 | |
| 230 void CodeCache::commit(CodeBlob* cb) { | |
| 231 // this is called by nmethod::nmethod, which must already own CodeCache_lock | |
| 232 assert_locked_or_safepoint(CodeCache_lock); | |
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233 if (cb->is_nmethod()) { |
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234 _number_of_nmethods++; |
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235 if (((nmethod *)cb)->has_dependencies()) { |
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236 _number_of_nmethods_with_dependencies++; |
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237 } |
| 0 | 238 } |
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239 if (cb->is_adapter_blob()) { |
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240 _number_of_adapters++; |
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241 } |
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242 |
| 0 | 243 // flush the hardware I-cache |
| 1748 | 244 ICache::invalidate_range(cb->content_begin(), cb->content_size()); |
| 0 | 245 } |
| 246 | |
| 247 | |
| 248 void CodeCache::flush() { | |
| 249 assert_locked_or_safepoint(CodeCache_lock); | |
| 250 Unimplemented(); | |
| 251 } | |
| 252 | |
| 253 | |
| 254 // Iteration over CodeBlobs | |
| 255 | |
| 256 #define FOR_ALL_BLOBS(var) for (CodeBlob *var = first() ; var != NULL; var = next(var) ) | |
| 257 #define FOR_ALL_ALIVE_BLOBS(var) for (CodeBlob *var = alive(first()); var != NULL; var = alive(next(var))) | |
| 258 #define FOR_ALL_ALIVE_NMETHODS(var) for (nmethod *var = alive_nmethod(first()); var != NULL; var = alive_nmethod(next(var))) | |
| 259 | |
| 260 | |
| 261 bool CodeCache::contains(void *p) { | |
| 262 // It should be ok to call contains without holding a lock | |
| 263 return _heap->contains(p); | |
| 264 } | |
| 265 | |
| 266 | |
| 267 // This method is safe to call without holding the CodeCache_lock, as long as a dead codeblob is not | |
| 268 // looked up (i.e., one that has been marked for deletion). It only dependes on the _segmap to contain | |
| 269 // valid indices, which it will always do, as long as the CodeBlob is not in the process of being recycled. | |
| 270 CodeBlob* CodeCache::find_blob(void* start) { | |
| 271 CodeBlob* result = find_blob_unsafe(start); | |
| 272 if (result == NULL) return NULL; | |
| 273 // We could potientially look up non_entrant methods | |
| 274 guarantee(!result->is_zombie() || result->is_locked_by_vm() || is_error_reported(), "unsafe access to zombie method"); | |
| 275 return result; | |
| 276 } | |
| 277 | |
| 278 nmethod* CodeCache::find_nmethod(void* start) { | |
| 279 CodeBlob *cb = find_blob(start); | |
| 280 assert(cb == NULL || cb->is_nmethod(), "did not find an nmethod"); | |
| 281 return (nmethod*)cb; | |
| 282 } | |
| 283 | |
| 284 | |
| 285 void CodeCache::blobs_do(void f(CodeBlob* nm)) { | |
| 286 assert_locked_or_safepoint(CodeCache_lock); | |
| 287 FOR_ALL_BLOBS(p) { | |
| 288 f(p); | |
| 289 } | |
| 290 } | |
| 291 | |
| 292 | |
| 293 void CodeCache::nmethods_do(void f(nmethod* nm)) { | |
| 294 assert_locked_or_safepoint(CodeCache_lock); | |
| 295 FOR_ALL_BLOBS(nm) { | |
| 296 if (nm->is_nmethod()) f((nmethod*)nm); | |
| 297 } | |
| 298 } | |
| 299 | |
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300 void CodeCache::alive_nmethods_do(void f(nmethod* nm)) { |
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301 assert_locked_or_safepoint(CodeCache_lock); |
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302 FOR_ALL_ALIVE_NMETHODS(nm) { |
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303 f(nm); |
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304 } |
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305 } |
| 0 | 306 |
| 307 int CodeCache::alignment_unit() { | |
| 308 return (int)_heap->alignment_unit(); | |
| 309 } | |
| 310 | |
| 311 | |
| 312 int CodeCache::alignment_offset() { | |
| 313 return (int)_heap->alignment_offset(); | |
| 314 } | |
| 315 | |
| 316 | |
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317 // Mark nmethods for unloading if they contain otherwise unreachable |
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318 // oops. |
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319 void CodeCache::do_unloading(BoolObjectClosure* is_alive, bool unloading_occurred) { |
| 0 | 320 assert_locked_or_safepoint(CodeCache_lock); |
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321 FOR_ALL_ALIVE_NMETHODS(nm) { |
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322 nm->do_unloading(is_alive, unloading_occurred); |
| 0 | 323 } |
| 324 } | |
| 325 | |
| 989 | 326 void CodeCache::blobs_do(CodeBlobClosure* f) { |
| 0 | 327 assert_locked_or_safepoint(CodeCache_lock); |
| 328 FOR_ALL_ALIVE_BLOBS(cb) { | |
| 989 | 329 f->do_code_blob(cb); |
| 330 | |
| 331 #ifdef ASSERT | |
| 332 if (cb->is_nmethod()) | |
| 333 ((nmethod*)cb)->verify_scavenge_root_oops(); | |
| 334 #endif //ASSERT | |
| 0 | 335 } |
| 336 } | |
| 337 | |
| 989 | 338 // Walk the list of methods which might contain non-perm oops. |
| 339 void CodeCache::scavenge_root_nmethods_do(CodeBlobClosure* f) { | |
| 340 assert_locked_or_safepoint(CodeCache_lock); | |
| 341 debug_only(mark_scavenge_root_nmethods()); | |
| 342 | |
| 343 for (nmethod* cur = scavenge_root_nmethods(); cur != NULL; cur = cur->scavenge_root_link()) { | |
| 344 debug_only(cur->clear_scavenge_root_marked()); | |
| 345 assert(cur->scavenge_root_not_marked(), ""); | |
| 346 assert(cur->on_scavenge_root_list(), "else shouldn't be on this list"); | |
| 347 | |
| 348 bool is_live = (!cur->is_zombie() && !cur->is_unloaded()); | |
| 349 #ifndef PRODUCT | |
| 350 if (TraceScavenge) { | |
| 351 cur->print_on(tty, is_live ? "scavenge root" : "dead scavenge root"); tty->cr(); | |
| 352 } | |
| 353 #endif //PRODUCT | |
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354 if (is_live) { |
| 989 | 355 // Perform cur->oops_do(f), maybe just once per nmethod. |
| 356 f->do_code_blob(cur); | |
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357 } |
| 989 | 358 } |
| 359 | |
| 360 // Check for stray marks. | |
| 361 debug_only(verify_perm_nmethods(NULL)); | |
| 362 } | |
| 363 | |
| 364 void CodeCache::add_scavenge_root_nmethod(nmethod* nm) { | |
| 365 assert_locked_or_safepoint(CodeCache_lock); | |
| 366 nm->set_on_scavenge_root_list(); | |
| 367 nm->set_scavenge_root_link(_scavenge_root_nmethods); | |
| 368 set_scavenge_root_nmethods(nm); | |
| 369 print_trace("add_scavenge_root", nm); | |
| 370 } | |
| 371 | |
| 372 void CodeCache::drop_scavenge_root_nmethod(nmethod* nm) { | |
| 373 assert_locked_or_safepoint(CodeCache_lock); | |
| 374 print_trace("drop_scavenge_root", nm); | |
| 375 nmethod* last = NULL; | |
| 376 nmethod* cur = scavenge_root_nmethods(); | |
| 377 while (cur != NULL) { | |
| 378 nmethod* next = cur->scavenge_root_link(); | |
| 379 if (cur == nm) { | |
| 380 if (last != NULL) | |
| 381 last->set_scavenge_root_link(next); | |
| 382 else set_scavenge_root_nmethods(next); | |
| 383 nm->set_scavenge_root_link(NULL); | |
| 384 nm->clear_on_scavenge_root_list(); | |
| 385 return; | |
| 386 } | |
| 387 last = cur; | |
| 388 cur = next; | |
| 389 } | |
| 390 assert(false, "should have been on list"); | |
| 391 } | |
| 392 | |
| 393 void CodeCache::prune_scavenge_root_nmethods() { | |
| 394 assert_locked_or_safepoint(CodeCache_lock); | |
| 395 debug_only(mark_scavenge_root_nmethods()); | |
| 396 | |
| 397 nmethod* last = NULL; | |
| 398 nmethod* cur = scavenge_root_nmethods(); | |
| 399 while (cur != NULL) { | |
| 400 nmethod* next = cur->scavenge_root_link(); | |
| 401 debug_only(cur->clear_scavenge_root_marked()); | |
| 402 assert(cur->scavenge_root_not_marked(), ""); | |
| 403 assert(cur->on_scavenge_root_list(), "else shouldn't be on this list"); | |
| 404 | |
| 405 if (!cur->is_zombie() && !cur->is_unloaded() | |
| 406 && cur->detect_scavenge_root_oops()) { | |
| 407 // Keep it. Advance 'last' to prevent deletion. | |
| 408 last = cur; | |
| 409 } else { | |
| 410 // Prune it from the list, so we don't have to look at it any more. | |
| 411 print_trace("prune_scavenge_root", cur); | |
| 412 cur->set_scavenge_root_link(NULL); | |
| 413 cur->clear_on_scavenge_root_list(); | |
| 414 if (last != NULL) | |
| 415 last->set_scavenge_root_link(next); | |
| 416 else set_scavenge_root_nmethods(next); | |
| 417 } | |
| 418 cur = next; | |
| 419 } | |
| 420 | |
| 421 // Check for stray marks. | |
| 422 debug_only(verify_perm_nmethods(NULL)); | |
| 423 } | |
| 424 | |
| 425 #ifndef PRODUCT | |
| 426 void CodeCache::asserted_non_scavengable_nmethods_do(CodeBlobClosure* f) { | |
| 427 // While we are here, verify the integrity of the list. | |
| 428 mark_scavenge_root_nmethods(); | |
| 429 for (nmethod* cur = scavenge_root_nmethods(); cur != NULL; cur = cur->scavenge_root_link()) { | |
| 430 assert(cur->on_scavenge_root_list(), "else shouldn't be on this list"); | |
| 431 cur->clear_scavenge_root_marked(); | |
| 432 } | |
| 433 verify_perm_nmethods(f); | |
| 434 } | |
| 435 | |
| 436 // Temporarily mark nmethods that are claimed to be on the non-perm list. | |
| 437 void CodeCache::mark_scavenge_root_nmethods() { | |
| 438 FOR_ALL_ALIVE_BLOBS(cb) { | |
| 439 if (cb->is_nmethod()) { | |
| 440 nmethod *nm = (nmethod*)cb; | |
| 441 assert(nm->scavenge_root_not_marked(), "clean state"); | |
| 442 if (nm->on_scavenge_root_list()) | |
| 443 nm->set_scavenge_root_marked(); | |
| 444 } | |
| 445 } | |
| 446 } | |
| 447 | |
| 448 // If the closure is given, run it on the unlisted nmethods. | |
| 449 // Also make sure that the effects of mark_scavenge_root_nmethods is gone. | |
| 450 void CodeCache::verify_perm_nmethods(CodeBlobClosure* f_or_null) { | |
| 451 FOR_ALL_ALIVE_BLOBS(cb) { | |
| 452 bool call_f = (f_or_null != NULL); | |
| 453 if (cb->is_nmethod()) { | |
| 454 nmethod *nm = (nmethod*)cb; | |
| 455 assert(nm->scavenge_root_not_marked(), "must be already processed"); | |
| 456 if (nm->on_scavenge_root_list()) | |
| 457 call_f = false; // don't show this one to the client | |
| 458 nm->verify_scavenge_root_oops(); | |
| 459 } else { | |
| 460 call_f = false; // not an nmethod | |
| 461 } | |
| 462 if (call_f) f_or_null->do_code_blob(cb); | |
| 463 } | |
| 464 } | |
| 465 #endif //PRODUCT | |
| 466 | |
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467 /** |
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468 * Remove and return nmethod from the saved code list in order to reanimate it. |
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469 */ |
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470 nmethod* CodeCache::reanimate_saved_code(Method* m) { |
| 1202 | 471 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
| 472 nmethod* saved = _saved_nmethods; | |
| 473 nmethod* prev = NULL; | |
| 474 while (saved != NULL) { | |
| 475 if (saved->is_in_use() && saved->method() == m) { | |
| 476 if (prev != NULL) { | |
| 477 prev->set_saved_nmethod_link(saved->saved_nmethod_link()); | |
| 478 } else { | |
| 479 _saved_nmethods = saved->saved_nmethod_link(); | |
| 480 } | |
| 481 assert(saved->is_speculatively_disconnected(), "shouldn't call for other nmethods"); | |
| 482 saved->set_speculatively_disconnected(false); | |
| 483 saved->set_saved_nmethod_link(NULL); | |
| 484 if (PrintMethodFlushing) { | |
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485 saved->print_on(tty, " ### nmethod is reconnected"); |
| 1202 | 486 } |
| 487 if (LogCompilation && (xtty != NULL)) { | |
| 488 ttyLocker ttyl; | |
| 489 xtty->begin_elem("nmethod_reconnected compile_id='%3d'", saved->compile_id()); | |
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490 xtty->method(m); |
| 1202 | 491 xtty->stamp(); |
| 492 xtty->end_elem(); | |
| 493 } | |
| 494 return saved; | |
| 495 } | |
| 496 prev = saved; | |
| 497 saved = saved->saved_nmethod_link(); | |
| 498 } | |
| 499 return NULL; | |
| 500 } | |
| 501 | |
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502 /** |
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503 * Remove nmethod from the saved code list in order to discard it permanently |
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504 */ |
| 1202 | 505 void CodeCache::remove_saved_code(nmethod* nm) { |
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506 // For conc swpr this will be called with CodeCache_lock taken by caller |
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507 assert_locked_or_safepoint(CodeCache_lock); |
| 1202 | 508 assert(nm->is_speculatively_disconnected(), "shouldn't call for other nmethods"); |
| 509 nmethod* saved = _saved_nmethods; | |
| 510 nmethod* prev = NULL; | |
| 511 while (saved != NULL) { | |
| 512 if (saved == nm) { | |
| 513 if (prev != NULL) { | |
| 514 prev->set_saved_nmethod_link(saved->saved_nmethod_link()); | |
| 515 } else { | |
| 516 _saved_nmethods = saved->saved_nmethod_link(); | |
| 517 } | |
| 518 if (LogCompilation && (xtty != NULL)) { | |
| 519 ttyLocker ttyl; | |
| 520 xtty->begin_elem("nmethod_removed compile_id='%3d'", nm->compile_id()); | |
| 521 xtty->stamp(); | |
| 522 xtty->end_elem(); | |
| 523 } | |
| 524 return; | |
| 525 } | |
| 526 prev = saved; | |
| 527 saved = saved->saved_nmethod_link(); | |
| 528 } | |
| 529 ShouldNotReachHere(); | |
| 530 } | |
| 531 | |
| 532 void CodeCache::speculatively_disconnect(nmethod* nm) { | |
| 533 assert_locked_or_safepoint(CodeCache_lock); | |
| 534 assert(nm->is_in_use() && !nm->is_speculatively_disconnected(), "should only disconnect live nmethods"); | |
| 535 nm->set_saved_nmethod_link(_saved_nmethods); | |
| 536 _saved_nmethods = nm; | |
| 537 if (PrintMethodFlushing) { | |
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538 nm->print_on(tty, " ### nmethod is speculatively disconnected"); |
| 1202 | 539 } |
| 540 if (LogCompilation && (xtty != NULL)) { | |
| 541 ttyLocker ttyl; | |
| 542 xtty->begin_elem("nmethod_disconnected compile_id='%3d'", nm->compile_id()); | |
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543 xtty->method(nm->method()); |
| 1202 | 544 xtty->stamp(); |
| 545 xtty->end_elem(); | |
| 546 } | |
| 547 nm->method()->clear_code(); | |
| 548 nm->set_speculatively_disconnected(true); | |
| 549 } | |
| 550 | |
| 551 | |
| 0 | 552 void CodeCache::gc_prologue() { |
| 989 | 553 assert(!nmethod::oops_do_marking_is_active(), "oops_do_marking_epilogue must be called"); |
| 0 | 554 } |
| 555 | |
| 556 | |
| 557 void CodeCache::gc_epilogue() { | |
| 558 assert_locked_or_safepoint(CodeCache_lock); | |
| 559 FOR_ALL_ALIVE_BLOBS(cb) { | |
| 560 if (cb->is_nmethod()) { | |
| 561 nmethod *nm = (nmethod*)cb; | |
| 562 assert(!nm->is_unloaded(), "Tautology"); | |
| 563 if (needs_cache_clean()) { | |
| 564 nm->cleanup_inline_caches(); | |
| 565 } | |
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566 DEBUG_ONLY(nm->verify()); |
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567 nm->fix_oop_relocations(); |
| 0 | 568 } |
| 569 } | |
| 570 set_needs_cache_clean(false); | |
| 989 | 571 prune_scavenge_root_nmethods(); |
| 572 assert(!nmethod::oops_do_marking_is_active(), "oops_do_marking_prologue must be called"); | |
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573 |
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574 #ifdef ASSERT |
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575 // make sure that we aren't leaking icholders |
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576 int count = 0; |
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577 FOR_ALL_BLOBS(cb) { |
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578 if (cb->is_nmethod()) { |
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579 RelocIterator iter((nmethod*)cb); |
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580 while(iter.next()) { |
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581 if (iter.type() == relocInfo::virtual_call_type) { |
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582 if (CompiledIC::is_icholder_call_site(iter.virtual_call_reloc())) { |
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583 CompiledIC *ic = CompiledIC_at(iter.reloc()); |
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584 if (TraceCompiledIC) { |
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585 tty->print("noticed icholder " INTPTR_FORMAT " ", ic->cached_icholder()); |
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586 ic->print(); |
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587 } |
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588 assert(ic->cached_icholder() != NULL, "must be non-NULL"); |
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589 count++; |
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590 } |
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591 } |
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592 } |
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593 } |
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594 } |
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595 |
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596 assert(count + InlineCacheBuffer::pending_icholder_count() + CompiledICHolder::live_not_claimed_count() == |
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597 CompiledICHolder::live_count(), "must agree"); |
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598 #endif |
| 0 | 599 } |
| 600 | |
| 601 | |
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602 void CodeCache::verify_oops() { |
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603 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
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604 VerifyOopClosure voc; |
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605 FOR_ALL_ALIVE_BLOBS(cb) { |
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606 if (cb->is_nmethod()) { |
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607 nmethod *nm = (nmethod*)cb; |
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608 nm->oops_do(&voc); |
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609 nm->verify_oop_relocations(); |
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610 } |
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611 } |
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612 } |
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613 |
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614 |
| 0 | 615 address CodeCache::first_address() { |
| 616 assert_locked_or_safepoint(CodeCache_lock); | |
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617 return (address)_heap->low_boundary(); |
| 0 | 618 } |
| 619 | |
| 620 | |
| 621 address CodeCache::last_address() { | |
| 622 assert_locked_or_safepoint(CodeCache_lock); | |
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623 return (address)_heap->high(); |
| 0 | 624 } |
| 625 | |
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626 /** |
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627 * Returns the reverse free ratio. E.g., if 25% (1/4) of the code cache |
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628 * is free, reverse_free_ratio() returns 4. |
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629 */ |
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630 double CodeCache::reverse_free_ratio() { |
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631 double unallocated_capacity = (double)(CodeCache::unallocated_capacity() - CodeCacheMinimumFreeSpace); |
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632 double max_capacity = (double)CodeCache::max_capacity(); |
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633 return max_capacity / unallocated_capacity; |
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634 } |
| 0 | 635 |
| 636 void icache_init(); | |
| 637 | |
| 638 void CodeCache::initialize() { | |
| 639 assert(CodeCacheSegmentSize >= (uintx)CodeEntryAlignment, "CodeCacheSegmentSize must be large enough to align entry points"); | |
| 640 #ifdef COMPILER2 | |
| 641 assert(CodeCacheSegmentSize >= (uintx)OptoLoopAlignment, "CodeCacheSegmentSize must be large enough to align inner loops"); | |
| 642 #endif | |
| 643 assert(CodeCacheSegmentSize >= sizeof(jdouble), "CodeCacheSegmentSize must be large enough to align constants"); | |
| 644 // This was originally just a check of the alignment, causing failure, instead, round | |
| 645 // the code cache to the page size. In particular, Solaris is moving to a larger | |
| 646 // default page size. | |
| 647 CodeCacheExpansionSize = round_to(CodeCacheExpansionSize, os::vm_page_size()); | |
| 648 InitialCodeCacheSize = round_to(InitialCodeCacheSize, os::vm_page_size()); | |
| 649 ReservedCodeCacheSize = round_to(ReservedCodeCacheSize, os::vm_page_size()); | |
| 650 if (!_heap->reserve(ReservedCodeCacheSize, InitialCodeCacheSize, CodeCacheSegmentSize)) { | |
| 651 vm_exit_during_initialization("Could not reserve enough space for code cache"); | |
| 652 } | |
| 653 | |
| 654 MemoryService::add_code_heap_memory_pool(_heap); | |
| 655 | |
| 656 // Initialize ICache flush mechanism | |
| 657 // This service is needed for os::register_code_area | |
| 658 icache_init(); | |
| 659 | |
| 660 // Give OS a chance to register generated code area. | |
| 661 // This is used on Windows 64 bit platforms to register | |
| 662 // Structured Exception Handlers for our generated code. | |
| 663 os::register_code_area(_heap->low_boundary(), _heap->high_boundary()); | |
| 664 } | |
| 665 | |
| 666 | |
| 667 void codeCache_init() { | |
| 668 CodeCache::initialize(); | |
| 669 } | |
| 670 | |
| 671 //------------------------------------------------------------------------------------------------ | |
| 672 | |
| 673 int CodeCache::number_of_nmethods_with_dependencies() { | |
| 674 return _number_of_nmethods_with_dependencies; | |
| 675 } | |
| 676 | |
| 677 void CodeCache::clear_inline_caches() { | |
| 678 assert_locked_or_safepoint(CodeCache_lock); | |
| 679 FOR_ALL_ALIVE_NMETHODS(nm) { | |
| 680 nm->clear_inline_caches(); | |
| 681 } | |
| 682 } | |
| 683 | |
| 684 #ifndef PRODUCT | |
| 685 // used to keep track of how much time is spent in mark_for_deoptimization | |
| 686 static elapsedTimer dependentCheckTime; | |
| 687 static int dependentCheckCount = 0; | |
| 688 #endif // PRODUCT | |
| 689 | |
| 690 | |
| 691 int CodeCache::mark_for_deoptimization(DepChange& changes) { | |
| 692 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
| 693 | |
| 694 #ifndef PRODUCT | |
| 695 dependentCheckTime.start(); | |
| 696 dependentCheckCount++; | |
| 697 #endif // PRODUCT | |
| 698 | |
| 699 int number_of_marked_CodeBlobs = 0; | |
| 700 | |
| 701 // search the hierarchy looking for nmethods which are affected by the loading of this class | |
| 702 | |
| 703 // then search the interfaces this class implements looking for nmethods | |
| 704 // which might be dependent of the fact that an interface only had one | |
| 705 // implementor. | |
| 706 | |
| 707 { No_Safepoint_Verifier nsv; | |
| 708 for (DepChange::ContextStream str(changes, nsv); str.next(); ) { | |
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709 Klass* d = str.klass(); |
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710 number_of_marked_CodeBlobs += InstanceKlass::cast(d)->mark_dependent_nmethods(changes); |
| 0 | 711 } |
| 712 } | |
| 713 | |
| 714 if (VerifyDependencies) { | |
| 715 // Turn off dependency tracing while actually testing deps. | |
| 716 NOT_PRODUCT( FlagSetting fs(TraceDependencies, false) ); | |
| 717 FOR_ALL_ALIVE_NMETHODS(nm) { | |
| 718 if (!nm->is_marked_for_deoptimization() && | |
| 719 nm->check_all_dependencies()) { | |
| 720 ResourceMark rm; | |
| 721 tty->print_cr("Should have been marked for deoptimization:"); | |
| 722 changes.print(); | |
| 723 nm->print(); | |
| 724 nm->print_dependencies(); | |
| 725 } | |
| 726 } | |
| 727 } | |
| 728 | |
| 729 #ifndef PRODUCT | |
| 730 dependentCheckTime.stop(); | |
| 731 #endif // PRODUCT | |
| 732 | |
| 733 return number_of_marked_CodeBlobs; | |
| 734 } | |
| 735 | |
| 736 | |
| 737 #ifdef HOTSWAP | |
| 738 int CodeCache::mark_for_evol_deoptimization(instanceKlassHandle dependee) { | |
| 739 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
| 740 int number_of_marked_CodeBlobs = 0; | |
| 741 | |
| 742 // Deoptimize all methods of the evolving class itself | |
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743 Array<Method*>* old_methods = dependee->methods(); |
| 0 | 744 for (int i = 0; i < old_methods->length(); i++) { |
| 745 ResourceMark rm; | |
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746 Method* old_method = old_methods->at(i); |
| 0 | 747 nmethod *nm = old_method->code(); |
| 748 if (nm != NULL) { | |
| 749 nm->mark_for_deoptimization(); | |
| 750 number_of_marked_CodeBlobs++; | |
| 751 } | |
| 752 } | |
| 753 | |
| 754 FOR_ALL_ALIVE_NMETHODS(nm) { | |
| 755 if (nm->is_marked_for_deoptimization()) { | |
| 756 // ...Already marked in the previous pass; don't count it again. | |
| 757 } else if (nm->is_evol_dependent_on(dependee())) { | |
| 758 ResourceMark rm; | |
| 759 nm->mark_for_deoptimization(); | |
| 760 number_of_marked_CodeBlobs++; | |
| 761 } else { | |
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762 // flush caches in case they refer to a redefined Method* |
| 0 | 763 nm->clear_inline_caches(); |
| 764 } | |
| 765 } | |
| 766 | |
| 767 return number_of_marked_CodeBlobs; | |
| 768 } | |
| 769 #endif // HOTSWAP | |
| 770 | |
| 771 | |
| 772 // Deoptimize all methods | |
| 773 void CodeCache::mark_all_nmethods_for_deoptimization() { | |
| 774 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
| 775 FOR_ALL_ALIVE_NMETHODS(nm) { | |
| 776 nm->mark_for_deoptimization(); | |
| 777 } | |
| 778 } | |
| 779 | |
| 780 | |
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781 int CodeCache::mark_for_deoptimization(Method* dependee) { |
| 0 | 782 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
| 783 int number_of_marked_CodeBlobs = 0; | |
| 784 | |
| 785 FOR_ALL_ALIVE_NMETHODS(nm) { | |
| 786 if (nm->is_dependent_on_method(dependee)) { | |
| 787 ResourceMark rm; | |
| 788 nm->mark_for_deoptimization(); | |
| 789 number_of_marked_CodeBlobs++; | |
| 790 } | |
| 791 } | |
| 792 | |
| 793 return number_of_marked_CodeBlobs; | |
| 794 } | |
| 795 | |
| 796 void CodeCache::make_marked_nmethods_zombies() { | |
| 797 assert(SafepointSynchronize::is_at_safepoint(), "must be at a safepoint"); | |
| 798 FOR_ALL_ALIVE_NMETHODS(nm) { | |
| 799 if (nm->is_marked_for_deoptimization()) { | |
| 800 | |
| 801 // If the nmethod has already been made non-entrant and it can be converted | |
| 802 // then zombie it now. Otherwise make it non-entrant and it will eventually | |
| 803 // be zombied when it is no longer seen on the stack. Note that the nmethod | |
| 804 // might be "entrant" and not on the stack and so could be zombied immediately | |
| 805 // but we can't tell because we don't track it on stack until it becomes | |
| 806 // non-entrant. | |
| 807 | |
| 808 if (nm->is_not_entrant() && nm->can_not_entrant_be_converted()) { | |
| 809 nm->make_zombie(); | |
| 810 } else { | |
| 811 nm->make_not_entrant(); | |
| 812 } | |
| 813 } | |
| 814 } | |
| 815 } | |
| 816 | |
| 817 void CodeCache::make_marked_nmethods_not_entrant() { | |
| 818 assert_locked_or_safepoint(CodeCache_lock); | |
| 819 FOR_ALL_ALIVE_NMETHODS(nm) { | |
| 820 if (nm->is_marked_for_deoptimization()) { | |
| 821 nm->make_not_entrant(); | |
| 822 } | |
| 823 } | |
| 824 } | |
| 825 | |
| 826 void CodeCache::verify() { | |
| 827 _heap->verify(); | |
| 828 FOR_ALL_ALIVE_BLOBS(p) { | |
| 829 p->verify(); | |
| 830 } | |
| 831 } | |
| 832 | |
| 10405 | 833 void CodeCache::report_codemem_full() { |
| 834 _codemem_full_count++; | |
| 835 EventCodeCacheFull event; | |
| 836 if (event.should_commit()) { | |
| 837 event.set_startAddress((u8)low_bound()); | |
| 838 event.set_commitedTopAddress((u8)high()); | |
| 839 event.set_reservedTopAddress((u8)high_bound()); | |
| 840 event.set_entryCount(nof_blobs()); | |
| 841 event.set_methodCount(nof_nmethods()); | |
| 842 event.set_adaptorCount(nof_adapters()); | |
| 843 event.set_unallocatedCapacity(unallocated_capacity()/K); | |
| 844 event.set_fullCount(_codemem_full_count); | |
| 845 event.commit(); | |
| 846 } | |
| 847 } | |
| 848 | |
| 0 | 849 //------------------------------------------------------------------------------------------------ |
| 850 // Non-product version | |
| 851 | |
| 852 #ifndef PRODUCT | |
| 853 | |
| 854 void CodeCache::verify_if_often() { | |
| 855 if (VerifyCodeCacheOften) { | |
| 856 _heap->verify(); | |
| 857 } | |
| 858 } | |
| 859 | |
| 989 | 860 void CodeCache::print_trace(const char* event, CodeBlob* cb, int size) { |
| 861 if (PrintCodeCache2) { // Need to add a new flag | |
| 862 ResourceMark rm; | |
| 863 if (size == 0) size = cb->size(); | |
| 864 tty->print_cr("CodeCache %s: addr: " INTPTR_FORMAT ", size: 0x%x", event, cb, size); | |
| 865 } | |
| 866 } | |
| 867 | |
| 0 | 868 void CodeCache::print_internals() { |
| 869 int nmethodCount = 0; | |
| 870 int runtimeStubCount = 0; | |
| 871 int adapterCount = 0; | |
| 872 int deoptimizationStubCount = 0; | |
| 873 int uncommonTrapStubCount = 0; | |
| 874 int bufferBlobCount = 0; | |
| 875 int total = 0; | |
| 876 int nmethodAlive = 0; | |
| 877 int nmethodNotEntrant = 0; | |
| 878 int nmethodZombie = 0; | |
| 879 int nmethodUnloaded = 0; | |
| 880 int nmethodJava = 0; | |
| 881 int nmethodNative = 0; | |
| 882 int maxCodeSize = 0; | |
| 883 ResourceMark rm; | |
| 884 | |
| 885 CodeBlob *cb; | |
| 886 for (cb = first(); cb != NULL; cb = next(cb)) { | |
| 887 total++; | |
| 888 if (cb->is_nmethod()) { | |
| 889 nmethod* nm = (nmethod*)cb; | |
| 890 | |
| 891 if (Verbose && nm->method() != NULL) { | |
| 892 ResourceMark rm; | |
| 893 char *method_name = nm->method()->name_and_sig_as_C_string(); | |
| 894 tty->print("%s", method_name); | |
| 895 if(nm->is_alive()) { tty->print_cr(" alive"); } | |
| 896 if(nm->is_not_entrant()) { tty->print_cr(" not-entrant"); } | |
| 897 if(nm->is_zombie()) { tty->print_cr(" zombie"); } | |
| 898 } | |
| 899 | |
| 900 nmethodCount++; | |
| 901 | |
| 902 if(nm->is_alive()) { nmethodAlive++; } | |
| 903 if(nm->is_not_entrant()) { nmethodNotEntrant++; } | |
| 904 if(nm->is_zombie()) { nmethodZombie++; } | |
| 905 if(nm->is_unloaded()) { nmethodUnloaded++; } | |
| 906 if(nm->is_native_method()) { nmethodNative++; } | |
| 907 | |
| 908 if(nm->method() != NULL && nm->is_java_method()) { | |
| 909 nmethodJava++; | |
| 1748 | 910 if (nm->insts_size() > maxCodeSize) { |
| 911 maxCodeSize = nm->insts_size(); | |
| 0 | 912 } |
| 913 } | |
| 914 } else if (cb->is_runtime_stub()) { | |
| 915 runtimeStubCount++; | |
| 916 } else if (cb->is_deoptimization_stub()) { | |
| 917 deoptimizationStubCount++; | |
| 918 } else if (cb->is_uncommon_trap_stub()) { | |
| 919 uncommonTrapStubCount++; | |
| 920 } else if (cb->is_adapter_blob()) { | |
| 921 adapterCount++; | |
| 922 } else if (cb->is_buffer_blob()) { | |
| 923 bufferBlobCount++; | |
| 924 } | |
| 925 } | |
| 926 | |
| 927 int bucketSize = 512; | |
| 928 int bucketLimit = maxCodeSize / bucketSize + 1; | |
| 6197 | 929 int *buckets = NEW_C_HEAP_ARRAY(int, bucketLimit, mtCode); |
| 0 | 930 memset(buckets,0,sizeof(int) * bucketLimit); |
| 931 | |
| 932 for (cb = first(); cb != NULL; cb = next(cb)) { | |
| 933 if (cb->is_nmethod()) { | |
| 934 nmethod* nm = (nmethod*)cb; | |
| 935 if(nm->is_java_method()) { | |
| 1748 | 936 buckets[nm->insts_size() / bucketSize]++; |
| 0 | 937 } |
| 938 } | |
| 939 } | |
| 940 tty->print_cr("Code Cache Entries (total of %d)",total); | |
| 941 tty->print_cr("-------------------------------------------------"); | |
| 942 tty->print_cr("nmethods: %d",nmethodCount); | |
| 943 tty->print_cr("\talive: %d",nmethodAlive); | |
| 944 tty->print_cr("\tnot_entrant: %d",nmethodNotEntrant); | |
| 945 tty->print_cr("\tzombie: %d",nmethodZombie); | |
| 946 tty->print_cr("\tunloaded: %d",nmethodUnloaded); | |
| 947 tty->print_cr("\tjava: %d",nmethodJava); | |
| 948 tty->print_cr("\tnative: %d",nmethodNative); | |
| 949 tty->print_cr("runtime_stubs: %d",runtimeStubCount); | |
| 950 tty->print_cr("adapters: %d",adapterCount); | |
| 951 tty->print_cr("buffer blobs: %d",bufferBlobCount); | |
| 952 tty->print_cr("deoptimization_stubs: %d",deoptimizationStubCount); | |
| 953 tty->print_cr("uncommon_traps: %d",uncommonTrapStubCount); | |
| 954 tty->print_cr("\nnmethod size distribution (non-zombie java)"); | |
| 955 tty->print_cr("-------------------------------------------------"); | |
| 956 | |
| 957 for(int i=0; i<bucketLimit; i++) { | |
| 958 if(buckets[i] != 0) { | |
| 959 tty->print("%d - %d bytes",i*bucketSize,(i+1)*bucketSize); | |
| 960 tty->fill_to(40); | |
| 961 tty->print_cr("%d",buckets[i]); | |
| 962 } | |
| 963 } | |
| 964 | |
| 6197 | 965 FREE_C_HEAP_ARRAY(int, buckets, mtCode); |
| 0 | 966 } |
| 967 | |
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968 #endif // !PRODUCT |
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969 |
| 0 | 970 void CodeCache::print() { |
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971 print_summary(tty); |
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972 |
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973 #ifndef PRODUCT |
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974 if (!Verbose) return; |
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975 |
| 0 | 976 CodeBlob_sizes live; |
| 977 CodeBlob_sizes dead; | |
| 978 | |
| 979 FOR_ALL_BLOBS(p) { | |
| 980 if (!p->is_alive()) { | |
| 981 dead.add(p); | |
| 982 } else { | |
| 983 live.add(p); | |
| 984 } | |
| 985 } | |
| 986 | |
| 987 tty->print_cr("CodeCache:"); | |
| 988 | |
| 989 tty->print_cr("nmethod dependency checking time %f", dependentCheckTime.seconds(), | |
| 990 dependentCheckTime.seconds() / dependentCheckCount); | |
| 991 | |
| 992 if (!live.is_empty()) { | |
| 993 live.print("live"); | |
| 994 } | |
| 995 if (!dead.is_empty()) { | |
| 996 dead.print("dead"); | |
| 997 } | |
| 998 | |
| 999 | |
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1000 if (WizardMode) { |
| 0 | 1001 // print the oop_map usage |
| 1002 int code_size = 0; | |
| 1003 int number_of_blobs = 0; | |
| 1004 int number_of_oop_maps = 0; | |
| 1005 int map_size = 0; | |
| 1006 FOR_ALL_BLOBS(p) { | |
| 1007 if (p->is_alive()) { | |
| 1008 number_of_blobs++; | |
| 1748 | 1009 code_size += p->code_size(); |
| 0 | 1010 OopMapSet* set = p->oop_maps(); |
| 1011 if (set != NULL) { | |
| 1012 number_of_oop_maps += set->size(); | |
| 1748 | 1013 map_size += set->heap_size(); |
| 0 | 1014 } |
| 1015 } | |
| 1016 } | |
| 1017 tty->print_cr("OopMaps"); | |
| 1018 tty->print_cr(" #blobs = %d", number_of_blobs); | |
| 1019 tty->print_cr(" code size = %d", code_size); | |
| 1020 tty->print_cr(" #oop_maps = %d", number_of_oop_maps); | |
| 1021 tty->print_cr(" map size = %d", map_size); | |
| 1022 } | |
| 1023 | |
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1024 #endif // !PRODUCT |
| 0 | 1025 } |
| 1026 | |
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1027 void CodeCache::print_summary(outputStream* st, bool detailed) { |
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1028 size_t total = (_heap->high_boundary() - _heap->low_boundary()); |
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1029 st->print_cr("CodeCache: size=" SIZE_FORMAT "Kb used=" SIZE_FORMAT |
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1030 "Kb max_used=" SIZE_FORMAT "Kb free=" SIZE_FORMAT "Kb", |
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1031 total/K, (total - unallocated_capacity())/K, |
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1032 maxCodeCacheUsed/K, unallocated_capacity()/K); |
| 1907 | 1033 |
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1034 if (detailed) { |
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1035 st->print_cr(" bounds [" INTPTR_FORMAT ", " INTPTR_FORMAT ", " INTPTR_FORMAT "]", |
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1036 _heap->low_boundary(), |
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1037 _heap->high(), |
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1038 _heap->high_boundary()); |
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1039 st->print_cr(" total_blobs=" UINT32_FORMAT " nmethods=" UINT32_FORMAT |
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1040 " adapters=" UINT32_FORMAT, |
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1041 nof_blobs(), nof_nmethods(), nof_adapters()); |
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1042 st->print_cr(" compilation: %s", CompileBroker::should_compile_new_jobs() ? |
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1043 "enabled" : Arguments::mode() == Arguments::_int ? |
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1044 "disabled (interpreter mode)" : |
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1045 "disabled (not enough contiguous free space left)"); |
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1046 } |
| 1907 | 1047 } |
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2353
1c0cf339481b
7025742: Can not use CodeCache::unallocated_capacity() with fragmented CodeCache
kvn
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1048 |
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1049 void CodeCache::log_state(outputStream* st) { |
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1050 st->print(" total_blobs='" UINT32_FORMAT "' nmethods='" UINT32_FORMAT "'" |
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10114
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8006952: Slow VM due to excessive code cache freelist iteration
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1051 " adapters='" UINT32_FORMAT "' free_code_cache='" SIZE_FORMAT "'", |
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2353
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1052 nof_blobs(), nof_nmethods(), nof_adapters(), |
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1053 unallocated_capacity()); |
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1054 } |
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2457
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7033779: CodeCache::largest_free_block may need to hold the CodeCache lock
never
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1055 |