Thu, 24 Jan 2013 22:13:32 -0800
8005128: JSR 292: the mlvm redefineClassInBootstrap test crashes in ConstantPool::compare_entry_to
Summary: When constant pool is copied in merge_constant_pools the invokedynamic operands must be copied before.
Reviewed-by: coleenp, twisti
Contributed-by: serguei.spitsyn@oracle.com
acorn@2233 | 1 | /* |
mikael@4153 | 2 | * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved. |
acorn@2233 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
acorn@2233 | 4 | * |
acorn@2233 | 5 | * This code is free software; you can redistribute it and/or modify it |
acorn@2233 | 6 | * under the terms of the GNU General Public License version 2 only, as |
acorn@2233 | 7 | * published by the Free Software Foundation. |
acorn@2233 | 8 | * |
acorn@2233 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
acorn@2233 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
acorn@2233 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
acorn@2233 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
acorn@2233 | 13 | * accompanied this code). |
acorn@2233 | 14 | * |
acorn@2233 | 15 | * You should have received a copy of the GNU General Public License version |
acorn@2233 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
acorn@2233 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
acorn@2233 | 18 | * |
acorn@2233 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
acorn@2233 | 20 | * or visit www.oracle.com if you need additional information or have any |
acorn@2233 | 21 | * questions. |
acorn@2233 | 22 | * |
acorn@2233 | 23 | */ |
acorn@2233 | 24 | |
stefank@2314 | 25 | #include "precompiled.hpp" |
stefank@2314 | 26 | #include "prims/jvmtiRawMonitor.hpp" |
stefank@2314 | 27 | #include "runtime/interfaceSupport.hpp" |
stefank@2314 | 28 | #include "runtime/thread.hpp" |
acorn@2233 | 29 | |
zgu@3900 | 30 | GrowableArray<JvmtiRawMonitor*> *JvmtiPendingMonitors::_monitors = new (ResourceObj::C_HEAP, mtInternal) GrowableArray<JvmtiRawMonitor*>(1,true); |
acorn@2233 | 31 | |
acorn@2233 | 32 | void JvmtiPendingMonitors::transition_raw_monitors() { |
acorn@2233 | 33 | assert((Threads::number_of_threads()==1), |
acorn@2233 | 34 | "Java thread has not created yet or more than one java thread \ |
acorn@2233 | 35 | is running. Raw monitor transition will not work"); |
acorn@2233 | 36 | JavaThread *current_java_thread = JavaThread::current(); |
acorn@2233 | 37 | assert(current_java_thread->thread_state() == _thread_in_vm, "Must be in vm"); |
acorn@2233 | 38 | { |
acorn@2233 | 39 | ThreadBlockInVM __tbivm(current_java_thread); |
acorn@2233 | 40 | for(int i=0; i< count(); i++) { |
acorn@2233 | 41 | JvmtiRawMonitor *rmonitor = monitors()->at(i); |
acorn@2233 | 42 | int r = rmonitor->raw_enter(current_java_thread); |
acorn@2233 | 43 | assert(r == ObjectMonitor::OM_OK, "raw_enter should have worked"); |
acorn@2233 | 44 | } |
acorn@2233 | 45 | } |
acorn@2233 | 46 | // pending monitors are converted to real monitor so delete them all. |
acorn@2233 | 47 | dispose(); |
acorn@2233 | 48 | } |
acorn@2233 | 49 | |
acorn@2233 | 50 | // |
acorn@2233 | 51 | // class JvmtiRawMonitor |
acorn@2233 | 52 | // |
acorn@2233 | 53 | |
acorn@2233 | 54 | JvmtiRawMonitor::JvmtiRawMonitor(const char *name) { |
acorn@2233 | 55 | #ifdef ASSERT |
zgu@3900 | 56 | _name = strcpy(NEW_C_HEAP_ARRAY(char, strlen(name) + 1, mtInternal), name); |
acorn@2233 | 57 | #else |
acorn@2233 | 58 | _name = NULL; |
acorn@2233 | 59 | #endif |
acorn@2233 | 60 | _magic = JVMTI_RM_MAGIC; |
acorn@2233 | 61 | } |
acorn@2233 | 62 | |
acorn@2233 | 63 | JvmtiRawMonitor::~JvmtiRawMonitor() { |
acorn@2233 | 64 | #ifdef ASSERT |
acorn@2233 | 65 | FreeHeap(_name); |
acorn@2233 | 66 | #endif |
acorn@2233 | 67 | _magic = 0; |
acorn@2233 | 68 | } |
acorn@2233 | 69 | |
acorn@2233 | 70 | |
acorn@2233 | 71 | bool |
acorn@2233 | 72 | JvmtiRawMonitor::is_valid() { |
acorn@2233 | 73 | int value = 0; |
acorn@2233 | 74 | |
acorn@2233 | 75 | // This object might not be a JvmtiRawMonitor so we can't assume |
acorn@2233 | 76 | // the _magic field is properly aligned. Get the value in a safe |
acorn@2233 | 77 | // way and then check against JVMTI_RM_MAGIC. |
acorn@2233 | 78 | |
acorn@2233 | 79 | switch (sizeof(_magic)) { |
acorn@2233 | 80 | case 2: |
acorn@2233 | 81 | value = Bytes::get_native_u2((address)&_magic); |
acorn@2233 | 82 | break; |
acorn@2233 | 83 | |
acorn@2233 | 84 | case 4: |
acorn@2233 | 85 | value = Bytes::get_native_u4((address)&_magic); |
acorn@2233 | 86 | break; |
acorn@2233 | 87 | |
acorn@2233 | 88 | case 8: |
acorn@2233 | 89 | value = Bytes::get_native_u8((address)&_magic); |
acorn@2233 | 90 | break; |
acorn@2233 | 91 | |
acorn@2233 | 92 | default: |
acorn@2233 | 93 | guarantee(false, "_magic field is an unexpected size"); |
acorn@2233 | 94 | } |
acorn@2233 | 95 | |
acorn@2233 | 96 | return value == JVMTI_RM_MAGIC; |
acorn@2233 | 97 | } |
acorn@2233 | 98 | |
acorn@2233 | 99 | // ------------------------------------------------------------------------- |
acorn@2233 | 100 | // The raw monitor subsystem is entirely distinct from normal |
acorn@2233 | 101 | // java-synchronization or jni-synchronization. raw monitors are not |
acorn@2233 | 102 | // associated with objects. They can be implemented in any manner |
acorn@2233 | 103 | // that makes sense. The original implementors decided to piggy-back |
acorn@2233 | 104 | // the raw-monitor implementation on the existing Java objectMonitor mechanism. |
acorn@2233 | 105 | // This flaw needs to fixed. We should reimplement raw monitors as sui-generis. |
acorn@2233 | 106 | // Specifically, we should not implement raw monitors via java monitors. |
acorn@2233 | 107 | // Time permitting, we should disentangle and deconvolve the two implementations |
acorn@2233 | 108 | // and move the resulting raw monitor implementation over to the JVMTI directories. |
acorn@2233 | 109 | // Ideally, the raw monitor implementation would be built on top of |
acorn@2233 | 110 | // park-unpark and nothing else. |
acorn@2233 | 111 | // |
acorn@2233 | 112 | // raw monitors are used mainly by JVMTI |
acorn@2233 | 113 | // The raw monitor implementation borrows the ObjectMonitor structure, |
acorn@2233 | 114 | // but the operators are degenerate and extremely simple. |
acorn@2233 | 115 | // |
acorn@2233 | 116 | // Mixed use of a single objectMonitor instance -- as both a raw monitor |
acorn@2233 | 117 | // and a normal java monitor -- is not permissible. |
acorn@2233 | 118 | // |
acorn@2233 | 119 | // Note that we use the single RawMonitor_lock to protect queue operations for |
acorn@2233 | 120 | // _all_ raw monitors. This is a scalability impediment, but since raw monitor usage |
acorn@2233 | 121 | // is deprecated and rare, this is not of concern. The RawMonitor_lock can not |
acorn@2233 | 122 | // be held indefinitely. The critical sections must be short and bounded. |
acorn@2233 | 123 | // |
acorn@2233 | 124 | // ------------------------------------------------------------------------- |
acorn@2233 | 125 | |
acorn@2233 | 126 | int JvmtiRawMonitor::SimpleEnter (Thread * Self) { |
acorn@2233 | 127 | for (;;) { |
acorn@2233 | 128 | if (Atomic::cmpxchg_ptr (Self, &_owner, NULL) == NULL) { |
acorn@2233 | 129 | return OS_OK ; |
acorn@2233 | 130 | } |
acorn@2233 | 131 | |
acorn@2233 | 132 | ObjectWaiter Node (Self) ; |
acorn@2233 | 133 | Self->_ParkEvent->reset() ; // strictly optional |
acorn@2233 | 134 | Node.TState = ObjectWaiter::TS_ENTER ; |
acorn@2233 | 135 | |
acorn@2233 | 136 | RawMonitor_lock->lock_without_safepoint_check() ; |
acorn@2233 | 137 | Node._next = _EntryList ; |
acorn@2233 | 138 | _EntryList = &Node ; |
acorn@2233 | 139 | OrderAccess::fence() ; |
acorn@2233 | 140 | if (_owner == NULL && Atomic::cmpxchg_ptr (Self, &_owner, NULL) == NULL) { |
acorn@2233 | 141 | _EntryList = Node._next ; |
acorn@2233 | 142 | RawMonitor_lock->unlock() ; |
acorn@2233 | 143 | return OS_OK ; |
acorn@2233 | 144 | } |
acorn@2233 | 145 | RawMonitor_lock->unlock() ; |
acorn@2233 | 146 | while (Node.TState == ObjectWaiter::TS_ENTER) { |
acorn@2233 | 147 | Self->_ParkEvent->park() ; |
acorn@2233 | 148 | } |
acorn@2233 | 149 | } |
acorn@2233 | 150 | } |
acorn@2233 | 151 | |
acorn@2233 | 152 | int JvmtiRawMonitor::SimpleExit (Thread * Self) { |
acorn@2233 | 153 | guarantee (_owner == Self, "invariant") ; |
acorn@2233 | 154 | OrderAccess::release_store_ptr (&_owner, NULL) ; |
acorn@2233 | 155 | OrderAccess::fence() ; |
acorn@2233 | 156 | if (_EntryList == NULL) return OS_OK ; |
acorn@2233 | 157 | ObjectWaiter * w ; |
acorn@2233 | 158 | |
acorn@2233 | 159 | RawMonitor_lock->lock_without_safepoint_check() ; |
acorn@2233 | 160 | w = _EntryList ; |
acorn@2233 | 161 | if (w != NULL) { |
acorn@2233 | 162 | _EntryList = w->_next ; |
acorn@2233 | 163 | } |
acorn@2233 | 164 | RawMonitor_lock->unlock() ; |
acorn@2233 | 165 | if (w != NULL) { |
acorn@2233 | 166 | guarantee (w ->TState == ObjectWaiter::TS_ENTER, "invariant") ; |
acorn@2233 | 167 | ParkEvent * ev = w->_event ; |
acorn@2233 | 168 | w->TState = ObjectWaiter::TS_RUN ; |
acorn@2233 | 169 | OrderAccess::fence() ; |
acorn@2233 | 170 | ev->unpark() ; |
acorn@2233 | 171 | } |
acorn@2233 | 172 | return OS_OK ; |
acorn@2233 | 173 | } |
acorn@2233 | 174 | |
acorn@2233 | 175 | int JvmtiRawMonitor::SimpleWait (Thread * Self, jlong millis) { |
acorn@2233 | 176 | guarantee (_owner == Self , "invariant") ; |
acorn@2233 | 177 | guarantee (_recursions == 0, "invariant") ; |
acorn@2233 | 178 | |
acorn@2233 | 179 | ObjectWaiter Node (Self) ; |
acorn@2233 | 180 | Node._notified = 0 ; |
acorn@2233 | 181 | Node.TState = ObjectWaiter::TS_WAIT ; |
acorn@2233 | 182 | |
acorn@2233 | 183 | RawMonitor_lock->lock_without_safepoint_check() ; |
acorn@2233 | 184 | Node._next = _WaitSet ; |
acorn@2233 | 185 | _WaitSet = &Node ; |
acorn@2233 | 186 | RawMonitor_lock->unlock() ; |
acorn@2233 | 187 | |
acorn@2233 | 188 | SimpleExit (Self) ; |
acorn@2233 | 189 | guarantee (_owner != Self, "invariant") ; |
acorn@2233 | 190 | |
acorn@2233 | 191 | int ret = OS_OK ; |
acorn@2233 | 192 | if (millis <= 0) { |
acorn@2233 | 193 | Self->_ParkEvent->park(); |
acorn@2233 | 194 | } else { |
acorn@2233 | 195 | ret = Self->_ParkEvent->park(millis); |
acorn@2233 | 196 | } |
acorn@2233 | 197 | |
acorn@2233 | 198 | // If thread still resides on the waitset then unlink it. |
acorn@2233 | 199 | // Double-checked locking -- the usage is safe in this context |
acorn@2233 | 200 | // as we TState is volatile and the lock-unlock operators are |
acorn@2233 | 201 | // serializing (barrier-equivalent). |
acorn@2233 | 202 | |
acorn@2233 | 203 | if (Node.TState == ObjectWaiter::TS_WAIT) { |
acorn@2233 | 204 | RawMonitor_lock->lock_without_safepoint_check() ; |
acorn@2233 | 205 | if (Node.TState == ObjectWaiter::TS_WAIT) { |
acorn@2233 | 206 | // Simple O(n) unlink, but performance isn't critical here. |
acorn@2233 | 207 | ObjectWaiter * p ; |
acorn@2233 | 208 | ObjectWaiter * q = NULL ; |
acorn@2233 | 209 | for (p = _WaitSet ; p != &Node; p = p->_next) { |
acorn@2233 | 210 | q = p ; |
acorn@2233 | 211 | } |
acorn@2233 | 212 | guarantee (p == &Node, "invariant") ; |
acorn@2233 | 213 | if (q == NULL) { |
acorn@2233 | 214 | guarantee (p == _WaitSet, "invariant") ; |
acorn@2233 | 215 | _WaitSet = p->_next ; |
acorn@2233 | 216 | } else { |
acorn@2233 | 217 | guarantee (p == q->_next, "invariant") ; |
acorn@2233 | 218 | q->_next = p->_next ; |
acorn@2233 | 219 | } |
acorn@2233 | 220 | Node.TState = ObjectWaiter::TS_RUN ; |
acorn@2233 | 221 | } |
acorn@2233 | 222 | RawMonitor_lock->unlock() ; |
acorn@2233 | 223 | } |
acorn@2233 | 224 | |
acorn@2233 | 225 | guarantee (Node.TState == ObjectWaiter::TS_RUN, "invariant") ; |
acorn@2233 | 226 | SimpleEnter (Self) ; |
acorn@2233 | 227 | |
acorn@2233 | 228 | guarantee (_owner == Self, "invariant") ; |
acorn@2233 | 229 | guarantee (_recursions == 0, "invariant") ; |
acorn@2233 | 230 | return ret ; |
acorn@2233 | 231 | } |
acorn@2233 | 232 | |
acorn@2233 | 233 | int JvmtiRawMonitor::SimpleNotify (Thread * Self, bool All) { |
acorn@2233 | 234 | guarantee (_owner == Self, "invariant") ; |
acorn@2233 | 235 | if (_WaitSet == NULL) return OS_OK ; |
acorn@2233 | 236 | |
acorn@2233 | 237 | // We have two options: |
acorn@2233 | 238 | // A. Transfer the threads from the WaitSet to the EntryList |
acorn@2233 | 239 | // B. Remove the thread from the WaitSet and unpark() it. |
acorn@2233 | 240 | // |
acorn@2233 | 241 | // We use (B), which is crude and results in lots of futile |
acorn@2233 | 242 | // context switching. In particular (B) induces lots of contention. |
acorn@2233 | 243 | |
acorn@2233 | 244 | ParkEvent * ev = NULL ; // consider using a small auto array ... |
acorn@2233 | 245 | RawMonitor_lock->lock_without_safepoint_check() ; |
acorn@2233 | 246 | for (;;) { |
acorn@2233 | 247 | ObjectWaiter * w = _WaitSet ; |
acorn@2233 | 248 | if (w == NULL) break ; |
acorn@2233 | 249 | _WaitSet = w->_next ; |
acorn@2233 | 250 | if (ev != NULL) { ev->unpark(); ev = NULL; } |
acorn@2233 | 251 | ev = w->_event ; |
acorn@2233 | 252 | OrderAccess::loadstore() ; |
acorn@2233 | 253 | w->TState = ObjectWaiter::TS_RUN ; |
acorn@2233 | 254 | OrderAccess::storeload(); |
acorn@2233 | 255 | if (!All) break ; |
acorn@2233 | 256 | } |
acorn@2233 | 257 | RawMonitor_lock->unlock() ; |
acorn@2233 | 258 | if (ev != NULL) ev->unpark(); |
acorn@2233 | 259 | return OS_OK ; |
acorn@2233 | 260 | } |
acorn@2233 | 261 | |
acorn@2233 | 262 | // Any JavaThread will enter here with state _thread_blocked |
acorn@2233 | 263 | int JvmtiRawMonitor::raw_enter(TRAPS) { |
acorn@2233 | 264 | TEVENT (raw_enter) ; |
acorn@2233 | 265 | void * Contended ; |
acorn@2233 | 266 | |
acorn@2233 | 267 | // don't enter raw monitor if thread is being externally suspended, it will |
acorn@2233 | 268 | // surprise the suspender if a "suspended" thread can still enter monitor |
acorn@2233 | 269 | JavaThread * jt = (JavaThread *)THREAD; |
acorn@2233 | 270 | if (THREAD->is_Java_thread()) { |
acorn@2233 | 271 | jt->SR_lock()->lock_without_safepoint_check(); |
acorn@2233 | 272 | while (jt->is_external_suspend()) { |
acorn@2233 | 273 | jt->SR_lock()->unlock(); |
acorn@2233 | 274 | jt->java_suspend_self(); |
acorn@2233 | 275 | jt->SR_lock()->lock_without_safepoint_check(); |
acorn@2233 | 276 | } |
acorn@2233 | 277 | // guarded by SR_lock to avoid racing with new external suspend requests. |
acorn@2233 | 278 | Contended = Atomic::cmpxchg_ptr (THREAD, &_owner, NULL) ; |
acorn@2233 | 279 | jt->SR_lock()->unlock(); |
acorn@2233 | 280 | } else { |
acorn@2233 | 281 | Contended = Atomic::cmpxchg_ptr (THREAD, &_owner, NULL) ; |
acorn@2233 | 282 | } |
acorn@2233 | 283 | |
acorn@2233 | 284 | if (Contended == THREAD) { |
acorn@2233 | 285 | _recursions ++ ; |
acorn@2233 | 286 | return OM_OK ; |
acorn@2233 | 287 | } |
acorn@2233 | 288 | |
acorn@2233 | 289 | if (Contended == NULL) { |
acorn@2233 | 290 | guarantee (_owner == THREAD, "invariant") ; |
acorn@2233 | 291 | guarantee (_recursions == 0, "invariant") ; |
acorn@2233 | 292 | return OM_OK ; |
acorn@2233 | 293 | } |
acorn@2233 | 294 | |
acorn@2233 | 295 | THREAD->set_current_pending_monitor(this); |
acorn@2233 | 296 | |
acorn@2233 | 297 | if (!THREAD->is_Java_thread()) { |
acorn@2233 | 298 | // No other non-Java threads besides VM thread would acquire |
acorn@2233 | 299 | // a raw monitor. |
acorn@2233 | 300 | assert(THREAD->is_VM_thread(), "must be VM thread"); |
acorn@2233 | 301 | SimpleEnter (THREAD) ; |
acorn@2233 | 302 | } else { |
acorn@2233 | 303 | guarantee (jt->thread_state() == _thread_blocked, "invariant") ; |
acorn@2233 | 304 | for (;;) { |
acorn@2233 | 305 | jt->set_suspend_equivalent(); |
acorn@2233 | 306 | // cleared by handle_special_suspend_equivalent_condition() or |
acorn@2233 | 307 | // java_suspend_self() |
acorn@2233 | 308 | SimpleEnter (THREAD) ; |
acorn@2233 | 309 | |
acorn@2233 | 310 | // were we externally suspended while we were waiting? |
acorn@2233 | 311 | if (!jt->handle_special_suspend_equivalent_condition()) break ; |
acorn@2233 | 312 | |
acorn@2233 | 313 | // This thread was externally suspended |
acorn@2233 | 314 | // |
acorn@2233 | 315 | // This logic isn't needed for JVMTI raw monitors, |
acorn@2233 | 316 | // but doesn't hurt just in case the suspend rules change. This |
acorn@2233 | 317 | // logic is needed for the JvmtiRawMonitor.wait() reentry phase. |
acorn@2233 | 318 | // We have reentered the contended monitor, but while we were |
acorn@2233 | 319 | // waiting another thread suspended us. We don't want to reenter |
acorn@2233 | 320 | // the monitor while suspended because that would surprise the |
acorn@2233 | 321 | // thread that suspended us. |
acorn@2233 | 322 | // |
acorn@2233 | 323 | // Drop the lock - |
acorn@2233 | 324 | SimpleExit (THREAD) ; |
acorn@2233 | 325 | |
acorn@2233 | 326 | jt->java_suspend_self(); |
acorn@2233 | 327 | } |
acorn@2233 | 328 | |
acorn@2233 | 329 | assert(_owner == THREAD, "Fatal error with monitor owner!"); |
acorn@2233 | 330 | assert(_recursions == 0, "Fatal error with monitor recursions!"); |
acorn@2233 | 331 | } |
acorn@2233 | 332 | |
acorn@2233 | 333 | THREAD->set_current_pending_monitor(NULL); |
acorn@2233 | 334 | guarantee (_recursions == 0, "invariant") ; |
acorn@2233 | 335 | return OM_OK; |
acorn@2233 | 336 | } |
acorn@2233 | 337 | |
acorn@2233 | 338 | // Used mainly for JVMTI raw monitor implementation |
acorn@2233 | 339 | // Also used for JvmtiRawMonitor::wait(). |
acorn@2233 | 340 | int JvmtiRawMonitor::raw_exit(TRAPS) { |
acorn@2233 | 341 | TEVENT (raw_exit) ; |
acorn@2233 | 342 | if (THREAD != _owner) { |
acorn@2233 | 343 | return OM_ILLEGAL_MONITOR_STATE; |
acorn@2233 | 344 | } |
acorn@2233 | 345 | if (_recursions > 0) { |
acorn@2233 | 346 | --_recursions ; |
acorn@2233 | 347 | return OM_OK ; |
acorn@2233 | 348 | } |
acorn@2233 | 349 | |
acorn@2233 | 350 | void * List = _EntryList ; |
acorn@2233 | 351 | SimpleExit (THREAD) ; |
acorn@2233 | 352 | |
acorn@2233 | 353 | return OM_OK; |
acorn@2233 | 354 | } |
acorn@2233 | 355 | |
acorn@2233 | 356 | // Used for JVMTI raw monitor implementation. |
acorn@2233 | 357 | // All JavaThreads will enter here with state _thread_blocked |
acorn@2233 | 358 | |
acorn@2233 | 359 | int JvmtiRawMonitor::raw_wait(jlong millis, bool interruptible, TRAPS) { |
acorn@2233 | 360 | TEVENT (raw_wait) ; |
acorn@2233 | 361 | if (THREAD != _owner) { |
acorn@2233 | 362 | return OM_ILLEGAL_MONITOR_STATE; |
acorn@2233 | 363 | } |
acorn@2233 | 364 | |
acorn@2233 | 365 | // To avoid spurious wakeups we reset the parkevent -- This is strictly optional. |
acorn@2233 | 366 | // The caller must be able to tolerate spurious returns from raw_wait(). |
acorn@2233 | 367 | THREAD->_ParkEvent->reset() ; |
acorn@2233 | 368 | OrderAccess::fence() ; |
acorn@2233 | 369 | |
acorn@2233 | 370 | // check interrupt event |
acorn@2233 | 371 | if (interruptible && Thread::is_interrupted(THREAD, true)) { |
acorn@2233 | 372 | return OM_INTERRUPTED; |
acorn@2233 | 373 | } |
acorn@2233 | 374 | |
acorn@2233 | 375 | intptr_t save = _recursions ; |
acorn@2233 | 376 | _recursions = 0 ; |
acorn@2233 | 377 | _waiters ++ ; |
acorn@2233 | 378 | if (THREAD->is_Java_thread()) { |
acorn@2233 | 379 | guarantee (((JavaThread *) THREAD)->thread_state() == _thread_blocked, "invariant") ; |
acorn@2233 | 380 | ((JavaThread *)THREAD)->set_suspend_equivalent(); |
acorn@2233 | 381 | } |
acorn@2233 | 382 | int rv = SimpleWait (THREAD, millis) ; |
acorn@2233 | 383 | _recursions = save ; |
acorn@2233 | 384 | _waiters -- ; |
acorn@2233 | 385 | |
acorn@2233 | 386 | guarantee (THREAD == _owner, "invariant") ; |
acorn@2233 | 387 | if (THREAD->is_Java_thread()) { |
acorn@2233 | 388 | JavaThread * jSelf = (JavaThread *) THREAD ; |
acorn@2233 | 389 | for (;;) { |
acorn@2233 | 390 | if (!jSelf->handle_special_suspend_equivalent_condition()) break ; |
acorn@2233 | 391 | SimpleExit (THREAD) ; |
acorn@2233 | 392 | jSelf->java_suspend_self(); |
acorn@2233 | 393 | SimpleEnter (THREAD) ; |
acorn@2233 | 394 | jSelf->set_suspend_equivalent() ; |
acorn@2233 | 395 | } |
acorn@2233 | 396 | } |
acorn@2233 | 397 | guarantee (THREAD == _owner, "invariant") ; |
acorn@2233 | 398 | |
acorn@2233 | 399 | if (interruptible && Thread::is_interrupted(THREAD, true)) { |
acorn@2233 | 400 | return OM_INTERRUPTED; |
acorn@2233 | 401 | } |
acorn@2233 | 402 | return OM_OK ; |
acorn@2233 | 403 | } |
acorn@2233 | 404 | |
acorn@2233 | 405 | int JvmtiRawMonitor::raw_notify(TRAPS) { |
acorn@2233 | 406 | TEVENT (raw_notify) ; |
acorn@2233 | 407 | if (THREAD != _owner) { |
acorn@2233 | 408 | return OM_ILLEGAL_MONITOR_STATE; |
acorn@2233 | 409 | } |
acorn@2233 | 410 | SimpleNotify (THREAD, false) ; |
acorn@2233 | 411 | return OM_OK; |
acorn@2233 | 412 | } |
acorn@2233 | 413 | |
acorn@2233 | 414 | int JvmtiRawMonitor::raw_notifyAll(TRAPS) { |
acorn@2233 | 415 | TEVENT (raw_notifyAll) ; |
acorn@2233 | 416 | if (THREAD != _owner) { |
acorn@2233 | 417 | return OM_ILLEGAL_MONITOR_STATE; |
acorn@2233 | 418 | } |
acorn@2233 | 419 | SimpleNotify (THREAD, true) ; |
acorn@2233 | 420 | return OM_OK; |
acorn@2233 | 421 | } |
acorn@2233 | 422 |