33 #include "runtime/mutexLocker.hpp"

    33 #include "runtime/mutexLocker.hpp"

    34 #include "runtime/objectMonitor.hpp"

    34 #include "runtime/objectMonitor.hpp"

    35 #include "runtime/objectMonitor.inline.hpp"

    35 #include "runtime/objectMonitor.inline.hpp"

    36 #include "runtime/orderAccess.inline.hpp"

    36 #include "runtime/orderAccess.inline.hpp"

    37 #include "runtime/osThread.hpp"

    37 #include "runtime/osThread.hpp"

    38 #include "runtime/stubRoutines.hpp"

    39 #include "runtime/stubRoutines.hpp"

    39 #include "runtime/thread.inline.hpp"

    40 #include "runtime/thread.inline.hpp"

    40 #include "services/threadService.hpp"

    41 #include "services/threadService.hpp"

    41 #include "trace/tracing.hpp"

    42 #include "trace/tracing.hpp"

    42 #include "trace/traceMacros.hpp"

    43 #include "trace/traceMacros.hpp"

  1280 

  1281 

  1281   // Drop the lock

  1282   // Drop the lock

  1282   OrderAccess::release_store(&_owner, (void*)NULL);

  1283   OrderAccess::release_store(&_owner, (void*)NULL);

  1283   OrderAccess::fence();                               // ST _owner vs LD in unpark()

  1284   OrderAccess::fence();                               // ST _owner vs LD in unpark()

  1284 

  1285 

  1286     TEVENT(unpark before SAFEPOINT);

  1287     TEVENT(unpark before SAFEPOINT);

  1287   }

  1288   }

  1288 

  1289 

  1289   DTRACE_MONITOR_PROBE(contended__exit, this, object(), Self);

  1290   DTRACE_MONITOR_PROBE(contended__exit, this, object(), Self);

  1290   Trigger->unpark();

  1291   Trigger->unpark();

  1934     // (a) this thread, if unsafe, doesn't delay the safepoint, and (b)

  1935     // (a) this thread, if unsafe, doesn't delay the safepoint, and (b)

  1935     // this thread, if safe, doesn't steal cycles from GC.

  1936     // this thread, if safe, doesn't steal cycles from GC.

  1936     // This is in keeping with the "no loitering in runtime" rule.

  1937     // This is in keeping with the "no loitering in runtime" rule.

  1937     // We periodically check to see if there's a safepoint pending.

  1938     // We periodically check to see if there's a safepoint pending.

  1938     if ((ctr & 0xFF) == 0) {

  1939     if ((ctr & 0xFF) == 0) {

  1940         TEVENT(Spin: safepoint);

  1941         TEVENT(Spin: safepoint);

  1941         goto Abort;           // abrupt spin egress

  1942         goto Abort;           // abrupt spin egress

  1942       }

  1943       }

  1943       if (Knob_UsePause & 1) SpinPause();

  1944       if (Knob_UsePause & 1) SpinPause();

  1944     }

  1945     }