Mercurial > hg > truffle
annotate src/share/vm/prims/jvmtiImpl.cpp @ 6725:da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
| author | coleenp |
|---|---|
| date | Sat, 01 Sep 2012 13:25:18 -0400 |
| parents | d2a62e0f25eb |
| children | e522a00b91aa 070d523b96a7 |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
2 * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
611
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
611
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
611
diff
changeset
|
21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "classfile/systemDictionary.hpp" | |
| 27 #include "interpreter/interpreter.hpp" | |
| 28 #include "jvmtifiles/jvmtiEnv.hpp" | |
| 29 #include "memory/resourceArea.hpp" | |
| 30 #include "oops/instanceKlass.hpp" | |
| 31 #include "prims/jvmtiAgentThread.hpp" | |
| 32 #include "prims/jvmtiEventController.inline.hpp" | |
| 33 #include "prims/jvmtiImpl.hpp" | |
| 34 #include "prims/jvmtiRedefineClasses.hpp" | |
|
2195
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
35 #include "runtime/atomic.hpp" |
| 1972 | 36 #include "runtime/deoptimization.hpp" |
| 37 #include "runtime/handles.hpp" | |
| 38 #include "runtime/handles.inline.hpp" | |
| 39 #include "runtime/interfaceSupport.hpp" | |
| 40 #include "runtime/javaCalls.hpp" | |
|
3304
0cddebc420d8
7039447: 2/1 java profiling is broken in build 139 (garbage in function name)
dcubed
parents:
2342
diff
changeset
|
41 #include "runtime/os.hpp" |
|
2195
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
42 #include "runtime/serviceThread.hpp" |
| 1972 | 43 #include "runtime/signature.hpp" |
| 44 #include "runtime/vframe.hpp" | |
| 45 #include "runtime/vframe_hp.hpp" | |
| 46 #include "runtime/vm_operations.hpp" | |
| 47 #include "utilities/exceptions.hpp" | |
| 48 #ifdef TARGET_OS_FAMILY_linux | |
| 49 # include "thread_linux.inline.hpp" | |
| 50 #endif | |
| 51 #ifdef TARGET_OS_FAMILY_solaris | |
| 52 # include "thread_solaris.inline.hpp" | |
| 53 #endif | |
| 54 #ifdef TARGET_OS_FAMILY_windows | |
| 55 # include "thread_windows.inline.hpp" | |
| 56 #endif | |
| 3960 | 57 #ifdef TARGET_OS_FAMILY_bsd |
| 58 # include "thread_bsd.inline.hpp" | |
| 59 #endif | |
| 0 | 60 |
| 61 // | |
| 62 // class JvmtiAgentThread | |
| 63 // | |
| 64 // JavaThread used to wrap a thread started by an agent | |
| 65 // using the JVMTI method RunAgentThread. | |
| 66 // | |
| 67 | |
| 68 JvmtiAgentThread::JvmtiAgentThread(JvmtiEnv* env, jvmtiStartFunction start_fn, const void *start_arg) | |
| 69 : JavaThread(start_function_wrapper) { | |
| 70 _env = env; | |
| 71 _start_fn = start_fn; | |
| 72 _start_arg = start_arg; | |
| 73 } | |
| 74 | |
| 75 void | |
| 76 JvmtiAgentThread::start_function_wrapper(JavaThread *thread, TRAPS) { | |
| 77 // It is expected that any Agent threads will be created as | |
| 78 // Java Threads. If this is the case, notification of the creation | |
| 79 // of the thread is given in JavaThread::thread_main(). | |
| 80 assert(thread->is_Java_thread(), "debugger thread should be a Java Thread"); | |
| 81 assert(thread == JavaThread::current(), "sanity check"); | |
| 82 | |
| 83 JvmtiAgentThread *dthread = (JvmtiAgentThread *)thread; | |
| 84 dthread->call_start_function(); | |
| 85 } | |
| 86 | |
| 87 void | |
| 88 JvmtiAgentThread::call_start_function() { | |
| 89 ThreadToNativeFromVM transition(this); | |
| 90 _start_fn(_env->jvmti_external(), jni_environment(), (void*)_start_arg); | |
| 91 } | |
| 92 | |
| 93 | |
| 94 // | |
| 95 // class GrowableCache - private methods | |
| 96 // | |
| 97 | |
| 98 void GrowableCache::recache() { | |
| 99 int len = _elements->length(); | |
| 100 | |
| 6197 | 101 FREE_C_HEAP_ARRAY(address, _cache, mtInternal); |
| 102 _cache = NEW_C_HEAP_ARRAY(address,len+1, mtInternal); | |
| 0 | 103 |
| 104 for (int i=0; i<len; i++) { | |
| 105 _cache[i] = _elements->at(i)->getCacheValue(); | |
| 106 // | |
| 107 // The cache entry has gone bad. Without a valid frame pointer | |
| 108 // value, the entry is useless so we simply delete it in product | |
| 109 // mode. The call to remove() will rebuild the cache again | |
| 110 // without the bad entry. | |
| 111 // | |
| 112 if (_cache[i] == NULL) { | |
| 113 assert(false, "cannot recache NULL elements"); | |
| 114 remove(i); | |
| 115 return; | |
| 116 } | |
| 117 } | |
| 118 _cache[len] = NULL; | |
| 119 | |
| 120 _listener_fun(_this_obj,_cache); | |
| 121 } | |
| 122 | |
| 123 bool GrowableCache::equals(void* v, GrowableElement *e2) { | |
| 124 GrowableElement *e1 = (GrowableElement *) v; | |
| 125 assert(e1 != NULL, "e1 != NULL"); | |
| 126 assert(e2 != NULL, "e2 != NULL"); | |
| 127 | |
| 128 return e1->equals(e2); | |
| 129 } | |
| 130 | |
| 131 // | |
| 132 // class GrowableCache - public methods | |
| 133 // | |
| 134 | |
| 135 GrowableCache::GrowableCache() { | |
| 136 _this_obj = NULL; | |
| 137 _listener_fun = NULL; | |
| 138 _elements = NULL; | |
| 139 _cache = NULL; | |
| 140 } | |
| 141 | |
| 142 GrowableCache::~GrowableCache() { | |
| 143 clear(); | |
| 144 delete _elements; | |
| 6197 | 145 FREE_C_HEAP_ARRAY(address, _cache, mtInternal); |
| 0 | 146 } |
| 147 | |
| 148 void GrowableCache::initialize(void *this_obj, void listener_fun(void *, address*) ) { | |
| 149 _this_obj = this_obj; | |
| 150 _listener_fun = listener_fun; | |
| 6197 | 151 _elements = new (ResourceObj::C_HEAP, mtInternal) GrowableArray<GrowableElement*>(5,true); |
| 0 | 152 recache(); |
| 153 } | |
| 154 | |
| 155 // number of elements in the collection | |
| 156 int GrowableCache::length() { | |
| 157 return _elements->length(); | |
| 158 } | |
| 159 | |
| 160 // get the value of the index element in the collection | |
| 161 GrowableElement* GrowableCache::at(int index) { | |
| 162 GrowableElement *e = (GrowableElement *) _elements->at(index); | |
| 163 assert(e != NULL, "e != NULL"); | |
| 164 return e; | |
| 165 } | |
| 166 | |
| 167 int GrowableCache::find(GrowableElement* e) { | |
| 168 return _elements->find(e, GrowableCache::equals); | |
| 169 } | |
| 170 | |
| 171 // append a copy of the element to the end of the collection | |
| 172 void GrowableCache::append(GrowableElement* e) { | |
| 173 GrowableElement *new_e = e->clone(); | |
| 174 _elements->append(new_e); | |
| 175 recache(); | |
| 176 } | |
| 177 | |
| 178 // insert a copy of the element using lessthan() | |
| 179 void GrowableCache::insert(GrowableElement* e) { | |
| 180 GrowableElement *new_e = e->clone(); | |
| 181 _elements->append(new_e); | |
| 182 | |
| 183 int n = length()-2; | |
| 184 for (int i=n; i>=0; i--) { | |
| 185 GrowableElement *e1 = _elements->at(i); | |
| 186 GrowableElement *e2 = _elements->at(i+1); | |
| 187 if (e2->lessThan(e1)) { | |
| 188 _elements->at_put(i+1, e1); | |
| 189 _elements->at_put(i, e2); | |
| 190 } | |
| 191 } | |
| 192 | |
| 193 recache(); | |
| 194 } | |
| 195 | |
| 196 // remove the element at index | |
| 197 void GrowableCache::remove (int index) { | |
| 198 GrowableElement *e = _elements->at(index); | |
| 199 assert(e != NULL, "e != NULL"); | |
| 200 _elements->remove(e); | |
| 201 delete e; | |
| 202 recache(); | |
| 203 } | |
| 204 | |
| 205 // clear out all elements, release all heap space and | |
| 206 // let our listener know that things have changed. | |
| 207 void GrowableCache::clear() { | |
| 208 int len = _elements->length(); | |
| 209 for (int i=0; i<len; i++) { | |
| 210 delete _elements->at(i); | |
| 211 } | |
| 212 _elements->clear(); | |
| 213 recache(); | |
| 214 } | |
| 215 | |
| 216 void GrowableCache::oops_do(OopClosure* f) { | |
| 217 int len = _elements->length(); | |
| 218 for (int i=0; i<len; i++) { | |
| 219 GrowableElement *e = _elements->at(i); | |
| 220 e->oops_do(f); | |
|
2147
9afee0b9fc1d
7012505: BreakpointWithFullGC.sh fails with Internal Error (src/share/vm/oops/methodOop.cpp:220)
kamg
parents:
2125
diff
changeset
|
221 } |
|
9afee0b9fc1d
7012505: BreakpointWithFullGC.sh fails with Internal Error (src/share/vm/oops/methodOop.cpp:220)
kamg
parents:
2125
diff
changeset
|
222 } |
|
9afee0b9fc1d
7012505: BreakpointWithFullGC.sh fails with Internal Error (src/share/vm/oops/methodOop.cpp:220)
kamg
parents:
2125
diff
changeset
|
223 |
|
9afee0b9fc1d
7012505: BreakpointWithFullGC.sh fails with Internal Error (src/share/vm/oops/methodOop.cpp:220)
kamg
parents:
2125
diff
changeset
|
224 void GrowableCache::gc_epilogue() { |
|
9afee0b9fc1d
7012505: BreakpointWithFullGC.sh fails with Internal Error (src/share/vm/oops/methodOop.cpp:220)
kamg
parents:
2125
diff
changeset
|
225 int len = _elements->length(); |
|
9afee0b9fc1d
7012505: BreakpointWithFullGC.sh fails with Internal Error (src/share/vm/oops/methodOop.cpp:220)
kamg
parents:
2125
diff
changeset
|
226 for (int i=0; i<len; i++) { |
|
9afee0b9fc1d
7012505: BreakpointWithFullGC.sh fails with Internal Error (src/share/vm/oops/methodOop.cpp:220)
kamg
parents:
2125
diff
changeset
|
227 _cache[i] = _elements->at(i)->getCacheValue(); |
| 0 | 228 } |
| 229 } | |
| 230 | |
| 231 // | |
| 232 // class JvmtiBreakpoint | |
| 233 // | |
| 234 | |
| 235 JvmtiBreakpoint::JvmtiBreakpoint() { | |
| 236 _method = NULL; | |
| 237 _bci = 0; | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
238 _class_loader = NULL; |
| 0 | 239 #ifdef CHECK_UNHANDLED_OOPS |
| 240 // This one is always allocated with new, but check it just in case. | |
| 241 Thread *thread = Thread::current(); | |
| 242 if (thread->is_in_stack((address)&_method)) { | |
| 243 thread->allow_unhandled_oop((oop*)&_method); | |
| 244 } | |
| 245 #endif // CHECK_UNHANDLED_OOPS | |
| 246 } | |
| 247 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
248 JvmtiBreakpoint::JvmtiBreakpoint(Method* m_method, jlocation location) { |
| 0 | 249 _method = m_method; |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
250 _class_loader = _method->method_holder()->class_loader_data()->class_loader(); |
| 0 | 251 assert(_method != NULL, "_method != NULL"); |
| 252 _bci = (int) location; | |
| 253 assert(_bci >= 0, "_bci >= 0"); | |
| 254 } | |
| 255 | |
| 256 void JvmtiBreakpoint::copy(JvmtiBreakpoint& bp) { | |
| 257 _method = bp._method; | |
| 258 _bci = bp._bci; | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
259 _class_loader = bp._class_loader; |
| 0 | 260 } |
| 261 | |
| 262 bool JvmtiBreakpoint::lessThan(JvmtiBreakpoint& bp) { | |
| 263 Unimplemented(); | |
| 264 return false; | |
| 265 } | |
| 266 | |
| 267 bool JvmtiBreakpoint::equals(JvmtiBreakpoint& bp) { | |
| 268 return _method == bp._method | |
| 269 && _bci == bp._bci; | |
| 270 } | |
| 271 | |
| 272 bool JvmtiBreakpoint::is_valid() { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
273 // class loader can be NULL |
| 0 | 274 return _method != NULL && |
| 275 _bci >= 0; | |
| 276 } | |
| 277 | |
| 278 address JvmtiBreakpoint::getBcp() { | |
| 279 return _method->bcp_from(_bci); | |
| 280 } | |
| 281 | |
| 282 void JvmtiBreakpoint::each_method_version_do(method_action meth_act) { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
283 ((Method*)_method->*meth_act)(_bci); |
| 0 | 284 |
| 285 // add/remove breakpoint to/from versions of the method that | |
| 286 // are EMCP. Directly or transitively obsolete methods are | |
| 287 // not saved in the PreviousVersionInfo. | |
| 288 Thread *thread = Thread::current(); | |
| 289 instanceKlassHandle ikh = instanceKlassHandle(thread, _method->method_holder()); | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2147
diff
changeset
|
290 Symbol* m_name = _method->name(); |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2147
diff
changeset
|
291 Symbol* m_signature = _method->signature(); |
| 0 | 292 |
| 293 { | |
| 294 ResourceMark rm(thread); | |
| 295 // PreviousVersionInfo objects returned via PreviousVersionWalker | |
| 296 // contain a GrowableArray of handles. We have to clean up the | |
| 297 // GrowableArray _after_ the PreviousVersionWalker destructor | |
| 298 // has destroyed the handles. | |
| 299 { | |
| 300 // search previous versions if they exist | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
301 PreviousVersionWalker pvw((InstanceKlass *)ikh()); |
| 0 | 302 for (PreviousVersionInfo * pv_info = pvw.next_previous_version(); |
| 303 pv_info != NULL; pv_info = pvw.next_previous_version()) { | |
| 304 GrowableArray<methodHandle>* methods = | |
| 305 pv_info->prev_EMCP_method_handles(); | |
| 306 | |
| 307 if (methods == NULL) { | |
| 308 // We have run into a PreviousVersion generation where | |
| 309 // all methods were made obsolete during that generation's | |
| 310 // RedefineClasses() operation. At the time of that | |
| 311 // operation, all EMCP methods were flushed so we don't | |
| 312 // have to go back any further. | |
| 313 // | |
| 314 // A NULL methods array is different than an empty methods | |
| 315 // array. We cannot infer any optimizations about older | |
| 316 // generations from an empty methods array for the current | |
| 317 // generation. | |
| 318 break; | |
| 319 } | |
| 320 | |
| 321 for (int i = methods->length() - 1; i >= 0; i--) { | |
| 322 methodHandle method = methods->at(i); | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
323 // obsolete methods that are running are not deleted from |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
324 // previous version array, but they are skipped here. |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
325 if (!method->is_obsolete() && |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
326 method->name() == m_name && |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
327 method->signature() == m_signature) { |
| 0 | 328 RC_TRACE(0x00000800, ("%sing breakpoint in %s(%s)", |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
329 meth_act == &Method::set_breakpoint ? "sett" : "clear", |
| 0 | 330 method->name()->as_C_string(), |
| 331 method->signature()->as_C_string())); | |
| 332 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
333 ((Method*)method()->*meth_act)(_bci); |
| 0 | 334 break; |
| 335 } | |
| 336 } | |
| 337 } | |
| 338 } // pvw is cleaned up | |
| 339 } // rm is cleaned up | |
| 340 } | |
| 341 | |
| 342 void JvmtiBreakpoint::set() { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
343 each_method_version_do(&Method::set_breakpoint); |
| 0 | 344 } |
| 345 | |
| 346 void JvmtiBreakpoint::clear() { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
347 each_method_version_do(&Method::clear_breakpoint); |
| 0 | 348 } |
| 349 | |
| 350 void JvmtiBreakpoint::print() { | |
| 351 #ifndef PRODUCT | |
| 352 const char *class_name = (_method == NULL) ? "NULL" : _method->klass_name()->as_C_string(); | |
| 353 const char *method_name = (_method == NULL) ? "NULL" : _method->name()->as_C_string(); | |
| 354 | |
| 355 tty->print("Breakpoint(%s,%s,%d,%p)",class_name, method_name, _bci, getBcp()); | |
| 356 #endif | |
| 357 } | |
| 358 | |
| 359 | |
| 360 // | |
| 361 // class VM_ChangeBreakpoints | |
| 362 // | |
| 363 // Modify the Breakpoints data structure at a safepoint | |
| 364 // | |
| 365 | |
| 366 void VM_ChangeBreakpoints::doit() { | |
| 367 switch (_operation) { | |
| 368 case SET_BREAKPOINT: | |
| 369 _breakpoints->set_at_safepoint(*_bp); | |
| 370 break; | |
| 371 case CLEAR_BREAKPOINT: | |
| 372 _breakpoints->clear_at_safepoint(*_bp); | |
| 373 break; | |
| 374 case CLEAR_ALL_BREAKPOINT: | |
| 375 _breakpoints->clearall_at_safepoint(); | |
| 376 break; | |
| 377 default: | |
| 378 assert(false, "Unknown operation"); | |
| 379 } | |
| 380 } | |
| 381 | |
| 382 void VM_ChangeBreakpoints::oops_do(OopClosure* f) { | |
| 383 // This operation keeps breakpoints alive | |
| 384 if (_breakpoints != NULL) { | |
| 385 _breakpoints->oops_do(f); | |
| 386 } | |
| 387 if (_bp != NULL) { | |
| 388 _bp->oops_do(f); | |
| 389 } | |
| 390 } | |
| 391 | |
| 392 // | |
| 393 // class JvmtiBreakpoints | |
| 394 // | |
| 395 // a JVMTI internal collection of JvmtiBreakpoint | |
| 396 // | |
| 397 | |
| 398 JvmtiBreakpoints::JvmtiBreakpoints(void listener_fun(void *,address *)) { | |
| 399 _bps.initialize(this,listener_fun); | |
| 400 } | |
| 401 | |
| 402 JvmtiBreakpoints:: ~JvmtiBreakpoints() {} | |
| 403 | |
| 404 void JvmtiBreakpoints::oops_do(OopClosure* f) { | |
| 405 _bps.oops_do(f); | |
| 406 } | |
| 407 | |
|
2147
9afee0b9fc1d
7012505: BreakpointWithFullGC.sh fails with Internal Error (src/share/vm/oops/methodOop.cpp:220)
kamg
parents:
2125
diff
changeset
|
408 void JvmtiBreakpoints::gc_epilogue() { |
|
9afee0b9fc1d
7012505: BreakpointWithFullGC.sh fails with Internal Error (src/share/vm/oops/methodOop.cpp:220)
kamg
parents:
2125
diff
changeset
|
409 _bps.gc_epilogue(); |
|
9afee0b9fc1d
7012505: BreakpointWithFullGC.sh fails with Internal Error (src/share/vm/oops/methodOop.cpp:220)
kamg
parents:
2125
diff
changeset
|
410 } |
|
9afee0b9fc1d
7012505: BreakpointWithFullGC.sh fails with Internal Error (src/share/vm/oops/methodOop.cpp:220)
kamg
parents:
2125
diff
changeset
|
411 |
| 0 | 412 void JvmtiBreakpoints::print() { |
| 413 #ifndef PRODUCT | |
| 414 ResourceMark rm; | |
| 415 | |
| 416 int n = _bps.length(); | |
| 417 for (int i=0; i<n; i++) { | |
| 418 JvmtiBreakpoint& bp = _bps.at(i); | |
| 419 tty->print("%d: ", i); | |
| 420 bp.print(); | |
| 421 tty->print_cr(""); | |
| 422 } | |
| 423 #endif | |
| 424 } | |
| 425 | |
| 426 | |
| 427 void JvmtiBreakpoints::set_at_safepoint(JvmtiBreakpoint& bp) { | |
| 428 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint"); | |
| 429 | |
| 430 int i = _bps.find(bp); | |
| 431 if (i == -1) { | |
| 432 _bps.append(bp); | |
| 433 bp.set(); | |
| 434 } | |
| 435 } | |
| 436 | |
| 437 void JvmtiBreakpoints::clear_at_safepoint(JvmtiBreakpoint& bp) { | |
| 438 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint"); | |
| 439 | |
| 440 int i = _bps.find(bp); | |
| 441 if (i != -1) { | |
| 442 _bps.remove(i); | |
| 443 bp.clear(); | |
| 444 } | |
| 445 } | |
| 446 | |
| 447 void JvmtiBreakpoints::clearall_at_safepoint() { | |
| 448 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint"); | |
| 449 | |
| 450 int len = _bps.length(); | |
| 451 for (int i=0; i<len; i++) { | |
| 452 _bps.at(i).clear(); | |
| 453 } | |
| 454 _bps.clear(); | |
| 455 } | |
| 456 | |
| 457 int JvmtiBreakpoints::length() { return _bps.length(); } | |
| 458 | |
| 459 int JvmtiBreakpoints::set(JvmtiBreakpoint& bp) { | |
| 460 if ( _bps.find(bp) != -1) { | |
| 461 return JVMTI_ERROR_DUPLICATE; | |
| 462 } | |
| 463 VM_ChangeBreakpoints set_breakpoint(this,VM_ChangeBreakpoints::SET_BREAKPOINT, &bp); | |
| 464 VMThread::execute(&set_breakpoint); | |
| 465 return JVMTI_ERROR_NONE; | |
| 466 } | |
| 467 | |
| 468 int JvmtiBreakpoints::clear(JvmtiBreakpoint& bp) { | |
| 469 if ( _bps.find(bp) == -1) { | |
| 470 return JVMTI_ERROR_NOT_FOUND; | |
| 471 } | |
| 472 | |
| 473 VM_ChangeBreakpoints clear_breakpoint(this,VM_ChangeBreakpoints::CLEAR_BREAKPOINT, &bp); | |
| 474 VMThread::execute(&clear_breakpoint); | |
| 475 return JVMTI_ERROR_NONE; | |
| 476 } | |
| 477 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
478 void JvmtiBreakpoints::clearall_in_class_at_safepoint(Klass* klass) { |
| 0 | 479 bool changed = true; |
| 480 // We are going to run thru the list of bkpts | |
| 481 // and delete some. This deletion probably alters | |
| 482 // the list in some implementation defined way such | |
| 483 // that when we delete entry i, the next entry might | |
| 484 // no longer be at i+1. To be safe, each time we delete | |
| 485 // an entry, we'll just start again from the beginning. | |
| 486 // We'll stop when we make a pass thru the whole list without | |
| 487 // deleting anything. | |
| 488 while (changed) { | |
| 489 int len = _bps.length(); | |
| 490 changed = false; | |
| 491 for (int i = 0; i < len; i++) { | |
| 492 JvmtiBreakpoint& bp = _bps.at(i); | |
| 493 if (bp.method()->method_holder() == klass) { | |
| 494 bp.clear(); | |
| 495 _bps.remove(i); | |
| 496 // This changed 'i' so we have to start over. | |
| 497 changed = true; | |
| 498 break; | |
| 499 } | |
| 500 } | |
| 501 } | |
| 502 } | |
| 503 | |
| 504 void JvmtiBreakpoints::clearall() { | |
| 505 VM_ChangeBreakpoints clearall_breakpoint(this,VM_ChangeBreakpoints::CLEAR_ALL_BREAKPOINT); | |
| 506 VMThread::execute(&clearall_breakpoint); | |
| 507 } | |
| 508 | |
| 509 // | |
| 510 // class JvmtiCurrentBreakpoints | |
| 511 // | |
| 512 | |
| 513 JvmtiBreakpoints *JvmtiCurrentBreakpoints::_jvmti_breakpoints = NULL; | |
| 514 address * JvmtiCurrentBreakpoints::_breakpoint_list = NULL; | |
| 515 | |
| 516 | |
| 517 JvmtiBreakpoints& JvmtiCurrentBreakpoints::get_jvmti_breakpoints() { | |
| 518 if (_jvmti_breakpoints != NULL) return (*_jvmti_breakpoints); | |
| 519 _jvmti_breakpoints = new JvmtiBreakpoints(listener_fun); | |
| 520 assert(_jvmti_breakpoints != NULL, "_jvmti_breakpoints != NULL"); | |
| 521 return (*_jvmti_breakpoints); | |
| 522 } | |
| 523 | |
| 524 void JvmtiCurrentBreakpoints::listener_fun(void *this_obj, address *cache) { | |
| 525 JvmtiBreakpoints *this_jvmti = (JvmtiBreakpoints *) this_obj; | |
| 526 assert(this_jvmti != NULL, "this_jvmti != NULL"); | |
| 527 | |
| 528 debug_only(int n = this_jvmti->length();); | |
| 529 assert(cache[n] == NULL, "cache must be NULL terminated"); | |
| 530 | |
| 531 set_breakpoint_list(cache); | |
| 532 } | |
| 533 | |
| 534 | |
| 535 void JvmtiCurrentBreakpoints::oops_do(OopClosure* f) { | |
| 536 if (_jvmti_breakpoints != NULL) { | |
| 537 _jvmti_breakpoints->oops_do(f); | |
| 538 } | |
| 539 } | |
| 540 | |
|
2147
9afee0b9fc1d
7012505: BreakpointWithFullGC.sh fails with Internal Error (src/share/vm/oops/methodOop.cpp:220)
kamg
parents:
2125
diff
changeset
|
541 void JvmtiCurrentBreakpoints::gc_epilogue() { |
|
9afee0b9fc1d
7012505: BreakpointWithFullGC.sh fails with Internal Error (src/share/vm/oops/methodOop.cpp:220)
kamg
parents:
2125
diff
changeset
|
542 if (_jvmti_breakpoints != NULL) { |
|
9afee0b9fc1d
7012505: BreakpointWithFullGC.sh fails with Internal Error (src/share/vm/oops/methodOop.cpp:220)
kamg
parents:
2125
diff
changeset
|
543 _jvmti_breakpoints->gc_epilogue(); |
|
9afee0b9fc1d
7012505: BreakpointWithFullGC.sh fails with Internal Error (src/share/vm/oops/methodOop.cpp:220)
kamg
parents:
2125
diff
changeset
|
544 } |
|
9afee0b9fc1d
7012505: BreakpointWithFullGC.sh fails with Internal Error (src/share/vm/oops/methodOop.cpp:220)
kamg
parents:
2125
diff
changeset
|
545 } |
|
9afee0b9fc1d
7012505: BreakpointWithFullGC.sh fails with Internal Error (src/share/vm/oops/methodOop.cpp:220)
kamg
parents:
2125
diff
changeset
|
546 |
| 0 | 547 /////////////////////////////////////////////////////////////// |
| 548 // | |
| 549 // class VM_GetOrSetLocal | |
| 550 // | |
| 551 | |
| 552 // Constructor for non-object getter | |
| 553 VM_GetOrSetLocal::VM_GetOrSetLocal(JavaThread* thread, jint depth, int index, BasicType type) | |
| 554 : _thread(thread) | |
| 555 , _calling_thread(NULL) | |
| 556 , _depth(depth) | |
| 557 , _index(index) | |
| 558 , _type(type) | |
| 559 , _set(false) | |
| 560 , _jvf(NULL) | |
| 561 , _result(JVMTI_ERROR_NONE) | |
| 562 { | |
| 563 } | |
| 564 | |
| 565 // Constructor for object or non-object setter | |
| 566 VM_GetOrSetLocal::VM_GetOrSetLocal(JavaThread* thread, jint depth, int index, BasicType type, jvalue value) | |
| 567 : _thread(thread) | |
| 568 , _calling_thread(NULL) | |
| 569 , _depth(depth) | |
| 570 , _index(index) | |
| 571 , _type(type) | |
| 572 , _value(value) | |
| 573 , _set(true) | |
| 574 , _jvf(NULL) | |
| 575 , _result(JVMTI_ERROR_NONE) | |
| 576 { | |
| 577 } | |
| 578 | |
| 579 // Constructor for object getter | |
| 580 VM_GetOrSetLocal::VM_GetOrSetLocal(JavaThread* thread, JavaThread* calling_thread, jint depth, int index) | |
| 581 : _thread(thread) | |
| 582 , _calling_thread(calling_thread) | |
| 583 , _depth(depth) | |
| 584 , _index(index) | |
| 585 , _type(T_OBJECT) | |
| 586 , _set(false) | |
| 587 , _jvf(NULL) | |
| 588 , _result(JVMTI_ERROR_NONE) | |
| 589 { | |
| 590 } | |
| 591 | |
| 592 vframe *VM_GetOrSetLocal::get_vframe() { | |
| 593 if (!_thread->has_last_Java_frame()) { | |
| 594 return NULL; | |
| 595 } | |
| 596 RegisterMap reg_map(_thread); | |
| 597 vframe *vf = _thread->last_java_vframe(®_map); | |
| 598 int d = 0; | |
| 599 while ((vf != NULL) && (d < _depth)) { | |
| 600 vf = vf->java_sender(); | |
| 601 d++; | |
| 602 } | |
| 603 return vf; | |
| 604 } | |
| 605 | |
| 606 javaVFrame *VM_GetOrSetLocal::get_java_vframe() { | |
| 607 vframe* vf = get_vframe(); | |
| 608 if (vf == NULL) { | |
| 609 _result = JVMTI_ERROR_NO_MORE_FRAMES; | |
| 610 return NULL; | |
| 611 } | |
| 612 javaVFrame *jvf = (javaVFrame*)vf; | |
| 613 | |
| 2019 | 614 if (!vf->is_java_frame()) { |
| 0 | 615 _result = JVMTI_ERROR_OPAQUE_FRAME; |
| 616 return NULL; | |
| 617 } | |
| 618 return jvf; | |
| 619 } | |
| 620 | |
| 621 // Check that the klass is assignable to a type with the given signature. | |
| 622 // Another solution could be to use the function Klass::is_subtype_of(type). | |
| 623 // But the type class can be forced to load/initialize eagerly in such a case. | |
| 624 // This may cause unexpected consequences like CFLH or class-init JVMTI events. | |
| 625 // It is better to avoid such a behavior. | |
| 626 bool VM_GetOrSetLocal::is_assignable(const char* ty_sign, Klass* klass, Thread* thread) { | |
| 627 assert(ty_sign != NULL, "type signature must not be NULL"); | |
| 628 assert(thread != NULL, "thread must not be NULL"); | |
| 629 assert(klass != NULL, "klass must not be NULL"); | |
| 630 | |
| 631 int len = (int) strlen(ty_sign); | |
| 632 if (ty_sign[0] == 'L' && ty_sign[len-1] == ';') { // Need pure class/interface name | |
| 633 ty_sign++; | |
| 634 len -= 2; | |
| 635 } | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2147
diff
changeset
|
636 TempNewSymbol ty_sym = SymbolTable::new_symbol(ty_sign, len, thread); |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2147
diff
changeset
|
637 if (klass->name() == ty_sym) { |
| 0 | 638 return true; |
| 639 } | |
| 640 // Compare primary supers | |
| 641 int super_depth = klass->super_depth(); | |
| 642 int idx; | |
| 643 for (idx = 0; idx < super_depth; idx++) { | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2147
diff
changeset
|
644 if (Klass::cast(klass->primary_super_of_depth(idx))->name() == ty_sym) { |
| 0 | 645 return true; |
| 646 } | |
| 647 } | |
| 648 // Compare secondary supers | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
649 Array<Klass*>* sec_supers = klass->secondary_supers(); |
| 0 | 650 for (idx = 0; idx < sec_supers->length(); idx++) { |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
651 if (Klass::cast((Klass*) sec_supers->at(idx))->name() == ty_sym) { |
| 0 | 652 return true; |
| 653 } | |
| 654 } | |
| 655 return false; | |
| 656 } | |
| 657 | |
| 658 // Checks error conditions: | |
| 659 // JVMTI_ERROR_INVALID_SLOT | |
| 660 // JVMTI_ERROR_TYPE_MISMATCH | |
| 661 // Returns: 'true' - everything is Ok, 'false' - error code | |
| 662 | |
| 663 bool VM_GetOrSetLocal::check_slot_type(javaVFrame* jvf) { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
664 Method* method_oop = jvf->method(); |
| 0 | 665 if (!method_oop->has_localvariable_table()) { |
| 666 // Just to check index boundaries | |
| 667 jint extra_slot = (_type == T_LONG || _type == T_DOUBLE) ? 1 : 0; | |
| 668 if (_index < 0 || _index + extra_slot >= method_oop->max_locals()) { | |
| 669 _result = JVMTI_ERROR_INVALID_SLOT; | |
| 670 return false; | |
| 671 } | |
| 672 return true; | |
| 673 } | |
| 674 | |
| 675 jint num_entries = method_oop->localvariable_table_length(); | |
| 676 if (num_entries == 0) { | |
| 677 _result = JVMTI_ERROR_INVALID_SLOT; | |
| 678 return false; // There are no slots | |
| 679 } | |
| 680 int signature_idx = -1; | |
| 681 int vf_bci = jvf->bci(); | |
| 682 LocalVariableTableElement* table = method_oop->localvariable_table_start(); | |
| 683 for (int i = 0; i < num_entries; i++) { | |
| 684 int start_bci = table[i].start_bci; | |
| 685 int end_bci = start_bci + table[i].length; | |
| 686 | |
| 687 // Here we assume that locations of LVT entries | |
| 688 // with the same slot number cannot be overlapped | |
| 689 if (_index == (jint) table[i].slot && start_bci <= vf_bci && vf_bci <= end_bci) { | |
| 690 signature_idx = (int) table[i].descriptor_cp_index; | |
| 691 break; | |
| 692 } | |
| 693 } | |
| 694 if (signature_idx == -1) { | |
| 695 _result = JVMTI_ERROR_INVALID_SLOT; | |
| 696 return false; // Incorrect slot index | |
| 697 } | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2147
diff
changeset
|
698 Symbol* sign_sym = method_oop->constants()->symbol_at(signature_idx); |
| 0 | 699 const char* signature = (const char *) sign_sym->as_utf8(); |
| 700 BasicType slot_type = char2type(signature[0]); | |
| 701 | |
| 702 switch (slot_type) { | |
| 703 case T_BYTE: | |
| 704 case T_SHORT: | |
| 705 case T_CHAR: | |
| 706 case T_BOOLEAN: | |
| 707 slot_type = T_INT; | |
| 708 break; | |
| 709 case T_ARRAY: | |
| 710 slot_type = T_OBJECT; | |
| 711 break; | |
| 712 }; | |
| 713 if (_type != slot_type) { | |
| 714 _result = JVMTI_ERROR_TYPE_MISMATCH; | |
| 715 return false; | |
| 716 } | |
| 717 | |
| 718 jobject jobj = _value.l; | |
| 719 if (_set && slot_type == T_OBJECT && jobj != NULL) { // NULL reference is allowed | |
| 720 // Check that the jobject class matches the return type signature. | |
| 721 JavaThread* cur_thread = JavaThread::current(); | |
| 722 HandleMark hm(cur_thread); | |
| 723 | |
| 724 Handle obj = Handle(cur_thread, JNIHandles::resolve_external_guard(jobj)); | |
| 725 NULL_CHECK(obj, (_result = JVMTI_ERROR_INVALID_OBJECT, false)); | |
| 726 KlassHandle ob_kh = KlassHandle(cur_thread, obj->klass()); | |
| 727 NULL_CHECK(ob_kh, (_result = JVMTI_ERROR_INVALID_OBJECT, false)); | |
| 728 | |
| 729 if (!is_assignable(signature, Klass::cast(ob_kh()), cur_thread)) { | |
| 730 _result = JVMTI_ERROR_TYPE_MISMATCH; | |
| 731 return false; | |
| 732 } | |
| 733 } | |
| 734 return true; | |
| 735 } | |
| 736 | |
| 737 static bool can_be_deoptimized(vframe* vf) { | |
| 738 return (vf->is_compiled_frame() && vf->fr().can_be_deoptimized()); | |
| 739 } | |
| 740 | |
| 741 bool VM_GetOrSetLocal::doit_prologue() { | |
| 742 _jvf = get_java_vframe(); | |
| 743 NULL_CHECK(_jvf, false); | |
| 744 | |
| 2019 | 745 if (_jvf->method()->is_native()) { |
| 746 if (getting_receiver() && !_jvf->method()->is_static()) { | |
| 747 return true; | |
| 748 } else { | |
| 749 _result = JVMTI_ERROR_OPAQUE_FRAME; | |
| 750 return false; | |
| 751 } | |
| 752 } | |
| 753 | |
| 0 | 754 if (!check_slot_type(_jvf)) { |
| 755 return false; | |
| 756 } | |
| 757 return true; | |
| 758 } | |
| 759 | |
| 760 void VM_GetOrSetLocal::doit() { | |
| 761 if (_set) { | |
| 762 // Force deoptimization of frame if compiled because it's | |
| 763 // possible the compiler emitted some locals as constant values, | |
| 764 // meaning they are not mutable. | |
| 765 if (can_be_deoptimized(_jvf)) { | |
| 766 | |
| 767 // Schedule deoptimization so that eventually the local | |
| 768 // update will be written to an interpreter frame. | |
|
1905
ce6848d0666d
6968367: can_post_on_exceptions is still using VM_DeoptimizeFrame in some places
never
parents:
1552
diff
changeset
|
769 Deoptimization::deoptimize_frame(_jvf->thread(), _jvf->fr().id()); |
| 0 | 770 |
| 771 // Now store a new value for the local which will be applied | |
| 772 // once deoptimization occurs. Note however that while this | |
| 773 // write is deferred until deoptimization actually happens | |
| 774 // can vframe created after this point will have its locals | |
| 775 // reflecting this update so as far as anyone can see the | |
| 776 // write has already taken place. | |
| 777 | |
| 778 // If we are updating an oop then get the oop from the handle | |
| 779 // since the handle will be long gone by the time the deopt | |
| 780 // happens. The oop stored in the deferred local will be | |
| 781 // gc'd on its own. | |
| 782 if (_type == T_OBJECT) { | |
| 783 _value.l = (jobject) (JNIHandles::resolve_external_guard(_value.l)); | |
| 784 } | |
| 785 // Re-read the vframe so we can see that it is deoptimized | |
| 786 // [ Only need because of assert in update_local() ] | |
| 787 _jvf = get_java_vframe(); | |
| 788 ((compiledVFrame*)_jvf)->update_local(_type, _index, _value); | |
| 789 return; | |
| 790 } | |
| 791 StackValueCollection *locals = _jvf->locals(); | |
| 792 HandleMark hm; | |
| 793 | |
| 794 switch (_type) { | |
| 2019 | 795 case T_INT: locals->set_int_at (_index, _value.i); break; |
| 796 case T_LONG: locals->set_long_at (_index, _value.j); break; | |
| 797 case T_FLOAT: locals->set_float_at (_index, _value.f); break; | |
| 798 case T_DOUBLE: locals->set_double_at(_index, _value.d); break; | |
| 799 case T_OBJECT: { | |
| 800 Handle ob_h(JNIHandles::resolve_external_guard(_value.l)); | |
| 801 locals->set_obj_at (_index, ob_h); | |
| 802 break; | |
| 803 } | |
| 804 default: ShouldNotReachHere(); | |
| 0 | 805 } |
| 806 _jvf->set_locals(locals); | |
| 807 } else { | |
| 2019 | 808 if (_jvf->method()->is_native() && _jvf->is_compiled_frame()) { |
| 809 assert(getting_receiver(), "Can only get here when getting receiver"); | |
| 810 oop receiver = _jvf->fr().get_native_receiver(); | |
| 811 _value.l = JNIHandles::make_local(_calling_thread, receiver); | |
| 812 } else { | |
| 813 StackValueCollection *locals = _jvf->locals(); | |
| 0 | 814 |
| 2019 | 815 if (locals->at(_index)->type() == T_CONFLICT) { |
| 816 memset(&_value, 0, sizeof(_value)); | |
| 817 _value.l = NULL; | |
| 818 return; | |
| 819 } | |
| 0 | 820 |
| 2019 | 821 switch (_type) { |
| 822 case T_INT: _value.i = locals->int_at (_index); break; | |
| 823 case T_LONG: _value.j = locals->long_at (_index); break; | |
| 824 case T_FLOAT: _value.f = locals->float_at (_index); break; | |
| 825 case T_DOUBLE: _value.d = locals->double_at(_index); break; | |
| 826 case T_OBJECT: { | |
| 827 // Wrap the oop to be returned in a local JNI handle since | |
| 828 // oops_do() no longer applies after doit() is finished. | |
| 829 oop obj = locals->obj_at(_index)(); | |
| 830 _value.l = JNIHandles::make_local(_calling_thread, obj); | |
| 831 break; | |
| 832 } | |
| 833 default: ShouldNotReachHere(); | |
| 834 } | |
| 0 | 835 } |
| 836 } | |
| 837 } | |
| 838 | |
| 839 | |
| 840 bool VM_GetOrSetLocal::allow_nested_vm_operations() const { | |
| 841 return true; // May need to deoptimize | |
| 842 } | |
| 843 | |
| 844 | |
| 2019 | 845 VM_GetReceiver::VM_GetReceiver( |
| 846 JavaThread* thread, JavaThread* caller_thread, jint depth) | |
| 847 : VM_GetOrSetLocal(thread, caller_thread, depth, 0) {} | |
| 848 | |
| 0 | 849 ///////////////////////////////////////////////////////////////////////////////////////// |
| 850 | |
| 851 // | |
| 852 // class JvmtiSuspendControl - see comments in jvmtiImpl.hpp | |
| 853 // | |
| 854 | |
| 855 bool JvmtiSuspendControl::suspend(JavaThread *java_thread) { | |
| 856 // external suspend should have caught suspending a thread twice | |
| 857 | |
| 858 // Immediate suspension required for JPDA back-end so JVMTI agent threads do | |
| 859 // not deadlock due to later suspension on transitions while holding | |
| 860 // raw monitors. Passing true causes the immediate suspension. | |
| 861 // java_suspend() will catch threads in the process of exiting | |
| 862 // and will ignore them. | |
| 863 java_thread->java_suspend(); | |
| 864 | |
| 865 // It would be nice to have the following assertion in all the time, | |
| 866 // but it is possible for a racing resume request to have resumed | |
| 867 // this thread right after we suspended it. Temporarily enable this | |
| 868 // assertion if you are chasing a different kind of bug. | |
| 869 // | |
| 870 // assert(java_lang_Thread::thread(java_thread->threadObj()) == NULL || | |
| 871 // java_thread->is_being_ext_suspended(), "thread is not suspended"); | |
| 872 | |
| 873 if (java_lang_Thread::thread(java_thread->threadObj()) == NULL) { | |
| 874 // check again because we can get delayed in java_suspend(): | |
| 875 // the thread is in process of exiting. | |
| 876 return false; | |
| 877 } | |
| 878 | |
| 879 return true; | |
| 880 } | |
| 881 | |
| 882 bool JvmtiSuspendControl::resume(JavaThread *java_thread) { | |
| 883 // external suspend should have caught resuming a thread twice | |
| 884 assert(java_thread->is_being_ext_suspended(), "thread should be suspended"); | |
| 885 | |
| 886 // resume thread | |
| 887 { | |
| 888 // must always grab Threads_lock, see JVM_SuspendThread | |
| 889 MutexLocker ml(Threads_lock); | |
| 890 java_thread->java_resume(); | |
| 891 } | |
| 892 | |
| 893 return true; | |
| 894 } | |
| 895 | |
| 896 | |
| 897 void JvmtiSuspendControl::print() { | |
| 898 #ifndef PRODUCT | |
| 899 MutexLocker mu(Threads_lock); | |
| 900 ResourceMark rm; | |
| 901 | |
| 902 tty->print("Suspended Threads: ["); | |
| 903 for (JavaThread *thread = Threads::first(); thread != NULL; thread = thread->next()) { | |
| 904 #if JVMTI_TRACE | |
| 905 const char *name = JvmtiTrace::safe_get_thread_name(thread); | |
| 906 #else | |
| 907 const char *name = ""; | |
| 908 #endif /*JVMTI_TRACE */ | |
| 909 tty->print("%s(%c ", name, thread->is_being_ext_suspended() ? 'S' : '_'); | |
| 910 if (!thread->has_last_Java_frame()) { | |
| 911 tty->print("no stack"); | |
| 912 } | |
| 913 tty->print(") "); | |
| 914 } | |
| 915 tty->print_cr("]"); | |
| 916 #endif | |
| 917 } | |
|
2195
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
918 |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
919 #ifndef KERNEL |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
920 |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
921 JvmtiDeferredEvent JvmtiDeferredEvent::compiled_method_load_event( |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
922 nmethod* nm) { |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
923 JvmtiDeferredEvent event = JvmtiDeferredEvent(TYPE_COMPILED_METHOD_LOAD); |
|
2301
f91db74a6810
7017640: Fix for 6766644 deadlocks on some NSK tests when running with -Xcomp
kamg
parents:
2195
diff
changeset
|
924 event._event_data.compiled_method_load = nm; |
|
2342
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2301
diff
changeset
|
925 // Keep the nmethod alive until the ServiceThread can process |
|
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2301
diff
changeset
|
926 // this deferred event. |
|
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2301
diff
changeset
|
927 nmethodLocker::lock_nmethod(nm); |
|
2195
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
928 return event; |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
929 } |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
930 |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
931 JvmtiDeferredEvent JvmtiDeferredEvent::compiled_method_unload_event( |
|
2342
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2301
diff
changeset
|
932 nmethod* nm, jmethodID id, const void* code) { |
|
2195
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
933 JvmtiDeferredEvent event = JvmtiDeferredEvent(TYPE_COMPILED_METHOD_UNLOAD); |
|
2342
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2301
diff
changeset
|
934 event._event_data.compiled_method_unload.nm = nm; |
|
2301
f91db74a6810
7017640: Fix for 6766644 deadlocks on some NSK tests when running with -Xcomp
kamg
parents:
2195
diff
changeset
|
935 event._event_data.compiled_method_unload.method_id = id; |
|
f91db74a6810
7017640: Fix for 6766644 deadlocks on some NSK tests when running with -Xcomp
kamg
parents:
2195
diff
changeset
|
936 event._event_data.compiled_method_unload.code_begin = code; |
|
2342
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2301
diff
changeset
|
937 // Keep the nmethod alive until the ServiceThread can process |
|
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2301
diff
changeset
|
938 // this deferred event. This will keep the memory for the |
|
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2301
diff
changeset
|
939 // generated code from being reused too early. We pass |
|
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2301
diff
changeset
|
940 // zombie_ok == true here so that our nmethod that was just |
|
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2301
diff
changeset
|
941 // made into a zombie can be locked. |
|
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2301
diff
changeset
|
942 nmethodLocker::lock_nmethod(nm, true /* zombie_ok */); |
|
2301
f91db74a6810
7017640: Fix for 6766644 deadlocks on some NSK tests when running with -Xcomp
kamg
parents:
2195
diff
changeset
|
943 return event; |
|
f91db74a6810
7017640: Fix for 6766644 deadlocks on some NSK tests when running with -Xcomp
kamg
parents:
2195
diff
changeset
|
944 } |
|
3304
0cddebc420d8
7039447: 2/1 java profiling is broken in build 139 (garbage in function name)
dcubed
parents:
2342
diff
changeset
|
945 |
|
2301
f91db74a6810
7017640: Fix for 6766644 deadlocks on some NSK tests when running with -Xcomp
kamg
parents:
2195
diff
changeset
|
946 JvmtiDeferredEvent JvmtiDeferredEvent::dynamic_code_generated_event( |
|
f91db74a6810
7017640: Fix for 6766644 deadlocks on some NSK tests when running with -Xcomp
kamg
parents:
2195
diff
changeset
|
947 const char* name, const void* code_begin, const void* code_end) { |
|
f91db74a6810
7017640: Fix for 6766644 deadlocks on some NSK tests when running with -Xcomp
kamg
parents:
2195
diff
changeset
|
948 JvmtiDeferredEvent event = JvmtiDeferredEvent(TYPE_DYNAMIC_CODE_GENERATED); |
|
3304
0cddebc420d8
7039447: 2/1 java profiling is broken in build 139 (garbage in function name)
dcubed
parents:
2342
diff
changeset
|
949 // Need to make a copy of the name since we don't know how long |
|
0cddebc420d8
7039447: 2/1 java profiling is broken in build 139 (garbage in function name)
dcubed
parents:
2342
diff
changeset
|
950 // the event poster will keep it around after we enqueue the |
|
0cddebc420d8
7039447: 2/1 java profiling is broken in build 139 (garbage in function name)
dcubed
parents:
2342
diff
changeset
|
951 // deferred event and return. strdup() failure is handled in |
|
0cddebc420d8
7039447: 2/1 java profiling is broken in build 139 (garbage in function name)
dcubed
parents:
2342
diff
changeset
|
952 // the post() routine below. |
|
0cddebc420d8
7039447: 2/1 java profiling is broken in build 139 (garbage in function name)
dcubed
parents:
2342
diff
changeset
|
953 event._event_data.dynamic_code_generated.name = os::strdup(name); |
|
2301
f91db74a6810
7017640: Fix for 6766644 deadlocks on some NSK tests when running with -Xcomp
kamg
parents:
2195
diff
changeset
|
954 event._event_data.dynamic_code_generated.code_begin = code_begin; |
|
f91db74a6810
7017640: Fix for 6766644 deadlocks on some NSK tests when running with -Xcomp
kamg
parents:
2195
diff
changeset
|
955 event._event_data.dynamic_code_generated.code_end = code_end; |
|
2195
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
956 return event; |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
957 } |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
958 |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
959 void JvmtiDeferredEvent::post() { |
|
2301
f91db74a6810
7017640: Fix for 6766644 deadlocks on some NSK tests when running with -Xcomp
kamg
parents:
2195
diff
changeset
|
960 assert(ServiceThread::is_service_thread(Thread::current()), |
|
f91db74a6810
7017640: Fix for 6766644 deadlocks on some NSK tests when running with -Xcomp
kamg
parents:
2195
diff
changeset
|
961 "Service thread must post enqueued events"); |
|
2195
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
962 switch(_type) { |
|
2301
f91db74a6810
7017640: Fix for 6766644 deadlocks on some NSK tests when running with -Xcomp
kamg
parents:
2195
diff
changeset
|
963 case TYPE_COMPILED_METHOD_LOAD: { |
|
f91db74a6810
7017640: Fix for 6766644 deadlocks on some NSK tests when running with -Xcomp
kamg
parents:
2195
diff
changeset
|
964 nmethod* nm = _event_data.compiled_method_load; |
|
f91db74a6810
7017640: Fix for 6766644 deadlocks on some NSK tests when running with -Xcomp
kamg
parents:
2195
diff
changeset
|
965 JvmtiExport::post_compiled_method_load(nm); |
|
2342
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2301
diff
changeset
|
966 // done with the deferred event so unlock the nmethod |
|
2301
f91db74a6810
7017640: Fix for 6766644 deadlocks on some NSK tests when running with -Xcomp
kamg
parents:
2195
diff
changeset
|
967 nmethodLocker::unlock_nmethod(nm); |
|
2195
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
968 break; |
|
2301
f91db74a6810
7017640: Fix for 6766644 deadlocks on some NSK tests when running with -Xcomp
kamg
parents:
2195
diff
changeset
|
969 } |
|
2342
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2301
diff
changeset
|
970 case TYPE_COMPILED_METHOD_UNLOAD: { |
|
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2301
diff
changeset
|
971 nmethod* nm = _event_data.compiled_method_unload.nm; |
|
2195
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
972 JvmtiExport::post_compiled_method_unload( |
|
2301
f91db74a6810
7017640: Fix for 6766644 deadlocks on some NSK tests when running with -Xcomp
kamg
parents:
2195
diff
changeset
|
973 _event_data.compiled_method_unload.method_id, |
|
f91db74a6810
7017640: Fix for 6766644 deadlocks on some NSK tests when running with -Xcomp
kamg
parents:
2195
diff
changeset
|
974 _event_data.compiled_method_unload.code_begin); |
|
2342
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2301
diff
changeset
|
975 // done with the deferred event so unlock the nmethod |
|
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2301
diff
changeset
|
976 nmethodLocker::unlock_nmethod(nm); |
|
2195
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
977 break; |
|
2342
46a56fac55c7
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
2301
diff
changeset
|
978 } |
|
3304
0cddebc420d8
7039447: 2/1 java profiling is broken in build 139 (garbage in function name)
dcubed
parents:
2342
diff
changeset
|
979 case TYPE_DYNAMIC_CODE_GENERATED: { |
|
2301
f91db74a6810
7017640: Fix for 6766644 deadlocks on some NSK tests when running with -Xcomp
kamg
parents:
2195
diff
changeset
|
980 JvmtiExport::post_dynamic_code_generated_internal( |
|
3304
0cddebc420d8
7039447: 2/1 java profiling is broken in build 139 (garbage in function name)
dcubed
parents:
2342
diff
changeset
|
981 // if strdup failed give the event a default name |
|
0cddebc420d8
7039447: 2/1 java profiling is broken in build 139 (garbage in function name)
dcubed
parents:
2342
diff
changeset
|
982 (_event_data.dynamic_code_generated.name == NULL) |
|
0cddebc420d8
7039447: 2/1 java profiling is broken in build 139 (garbage in function name)
dcubed
parents:
2342
diff
changeset
|
983 ? "unknown_code" : _event_data.dynamic_code_generated.name, |
|
2301
f91db74a6810
7017640: Fix for 6766644 deadlocks on some NSK tests when running with -Xcomp
kamg
parents:
2195
diff
changeset
|
984 _event_data.dynamic_code_generated.code_begin, |
|
f91db74a6810
7017640: Fix for 6766644 deadlocks on some NSK tests when running with -Xcomp
kamg
parents:
2195
diff
changeset
|
985 _event_data.dynamic_code_generated.code_end); |
|
3304
0cddebc420d8
7039447: 2/1 java profiling is broken in build 139 (garbage in function name)
dcubed
parents:
2342
diff
changeset
|
986 if (_event_data.dynamic_code_generated.name != NULL) { |
|
0cddebc420d8
7039447: 2/1 java profiling is broken in build 139 (garbage in function name)
dcubed
parents:
2342
diff
changeset
|
987 // release our copy |
|
0cddebc420d8
7039447: 2/1 java profiling is broken in build 139 (garbage in function name)
dcubed
parents:
2342
diff
changeset
|
988 os::free((void *)_event_data.dynamic_code_generated.name); |
|
0cddebc420d8
7039447: 2/1 java profiling is broken in build 139 (garbage in function name)
dcubed
parents:
2342
diff
changeset
|
989 } |
|
2195
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
990 break; |
|
3304
0cddebc420d8
7039447: 2/1 java profiling is broken in build 139 (garbage in function name)
dcubed
parents:
2342
diff
changeset
|
991 } |
|
2195
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
992 default: |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
993 ShouldNotReachHere(); |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
994 } |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
995 } |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
996 |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
997 JvmtiDeferredEventQueue::QueueNode* JvmtiDeferredEventQueue::_queue_tail = NULL; |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
998 JvmtiDeferredEventQueue::QueueNode* JvmtiDeferredEventQueue::_queue_head = NULL; |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
999 |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1000 volatile JvmtiDeferredEventQueue::QueueNode* |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1001 JvmtiDeferredEventQueue::_pending_list = NULL; |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1002 |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1003 bool JvmtiDeferredEventQueue::has_events() { |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1004 assert(Service_lock->owned_by_self(), "Must own Service_lock"); |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1005 return _queue_head != NULL || _pending_list != NULL; |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1006 } |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1007 |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1008 void JvmtiDeferredEventQueue::enqueue(const JvmtiDeferredEvent& event) { |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1009 assert(Service_lock->owned_by_self(), "Must own Service_lock"); |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1010 |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1011 process_pending_events(); |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1012 |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1013 // Events get added to the end of the queue (and are pulled off the front). |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1014 QueueNode* node = new QueueNode(event); |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1015 if (_queue_tail == NULL) { |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1016 _queue_tail = _queue_head = node; |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1017 } else { |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1018 assert(_queue_tail->next() == NULL, "Must be the last element in the list"); |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1019 _queue_tail->set_next(node); |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1020 _queue_tail = node; |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1021 } |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1022 |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1023 Service_lock->notify_all(); |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1024 assert((_queue_head == NULL) == (_queue_tail == NULL), |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1025 "Inconsistent queue markers"); |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1026 } |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1027 |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1028 JvmtiDeferredEvent JvmtiDeferredEventQueue::dequeue() { |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1029 assert(Service_lock->owned_by_self(), "Must own Service_lock"); |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1030 |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1031 process_pending_events(); |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1032 |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1033 assert(_queue_head != NULL, "Nothing to dequeue"); |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1034 |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1035 if (_queue_head == NULL) { |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1036 // Just in case this happens in product; it shouldn't but let's not crash |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1037 return JvmtiDeferredEvent(); |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1038 } |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1039 |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1040 QueueNode* node = _queue_head; |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1041 _queue_head = _queue_head->next(); |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1042 if (_queue_head == NULL) { |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1043 _queue_tail = NULL; |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1044 } |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1045 |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1046 assert((_queue_head == NULL) == (_queue_tail == NULL), |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1047 "Inconsistent queue markers"); |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1048 |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1049 JvmtiDeferredEvent event = node->event(); |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1050 delete node; |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1051 return event; |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1052 } |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1053 |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1054 void JvmtiDeferredEventQueue::add_pending_event( |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1055 const JvmtiDeferredEvent& event) { |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1056 |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1057 QueueNode* node = new QueueNode(event); |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1058 |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1059 bool success = false; |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1060 QueueNode* prev_value = (QueueNode*)_pending_list; |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1061 do { |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1062 node->set_next(prev_value); |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1063 prev_value = (QueueNode*)Atomic::cmpxchg_ptr( |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1064 (void*)node, (volatile void*)&_pending_list, (void*)node->next()); |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1065 } while (prev_value != node->next()); |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1066 } |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1067 |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1068 // This method transfers any events that were added by someone NOT holding |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1069 // the lock into the mainline queue. |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1070 void JvmtiDeferredEventQueue::process_pending_events() { |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1071 assert(Service_lock->owned_by_self(), "Must own Service_lock"); |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1072 |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1073 if (_pending_list != NULL) { |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1074 QueueNode* head = |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1075 (QueueNode*)Atomic::xchg_ptr(NULL, (volatile void*)&_pending_list); |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1076 |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1077 assert((_queue_head == NULL) == (_queue_tail == NULL), |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1078 "Inconsistent queue markers"); |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1079 |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1080 if (head != NULL) { |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1081 // Since we've treated the pending list as a stack (with newer |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1082 // events at the beginning), we need to join the bottom of the stack |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1083 // with the 'tail' of the queue in order to get the events in the |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1084 // right order. We do this by reversing the pending list and appending |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1085 // it to the queue. |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1086 |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1087 QueueNode* new_tail = head; |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1088 QueueNode* new_head = NULL; |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1089 |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1090 // This reverses the list |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1091 QueueNode* prev = new_tail; |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1092 QueueNode* node = new_tail->next(); |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1093 new_tail->set_next(NULL); |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1094 while (node != NULL) { |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1095 QueueNode* next = node->next(); |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1096 node->set_next(prev); |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1097 prev = node; |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1098 node = next; |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1099 } |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1100 new_head = prev; |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1101 |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1102 // Now append the new list to the queue |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1103 if (_queue_tail != NULL) { |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1104 _queue_tail->set_next(new_head); |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1105 } else { // _queue_head == NULL |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1106 _queue_head = new_head; |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1107 } |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1108 _queue_tail = new_tail; |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1109 } |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1110 } |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1111 } |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1112 |
|
bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
2177
diff
changeset
|
1113 #endif // ndef KERNEL |