182 

   182 

   183 bool VM_PrintThreads::doit_prologue() {

   183 bool VM_PrintThreads::doit_prologue() {

   184   assert(Thread::current()->is_Java_thread(), "just checking");

   184   assert(Thread::current()->is_Java_thread(), "just checking");

   185 

   185 

   186   // Make sure AbstractOwnableSynchronizer is loaded

   186   // Make sure AbstractOwnableSynchronizer is loaded

   190 

   188 

   191   // Get Heap_lock if concurrent locks will be dumped

   189   // Get Heap_lock if concurrent locks will be dumped

   192   if (_print_concurrent_locks) {

   190   if (_print_concurrent_locks) {

   193     Heap_lock->lock();

   191     Heap_lock->lock();

   194   }

   192   }

   223 

   221 

   224 bool VM_FindDeadlocks::doit_prologue() {

   222 bool VM_FindDeadlocks::doit_prologue() {

   225   assert(Thread::current()->is_Java_thread(), "just checking");

   223   assert(Thread::current()->is_Java_thread(), "just checking");

   226 

   224 

   227   // Load AbstractOwnableSynchronizer class

   225   // Load AbstractOwnableSynchronizer class

   229     java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(JavaThread::current());

   227     java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(JavaThread::current());

   230   }

   228   }

   231 

   229 

   232   return true;

   230   return true;

   233 }

   231 }

   281 

   279 

   282 bool VM_ThreadDump::doit_prologue() {

   280 bool VM_ThreadDump::doit_prologue() {

   283   assert(Thread::current()->is_Java_thread(), "just checking");

   281   assert(Thread::current()->is_Java_thread(), "just checking");

   284 

   282 

   285   // Load AbstractOwnableSynchronizer class before taking thread snapshots

   283   // Load AbstractOwnableSynchronizer class before taking thread snapshots

   289 

   285 

   290   if (_with_locked_synchronizers) {

   286   if (_with_locked_synchronizers) {

   291     // Acquire Heap_lock to dump concurrent locks

   287     // Acquire Heap_lock to dump concurrent locks

   292     Heap_lock->lock();

   288     Heap_lock->lock();

   293   }

   289   }