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test/hotspot/gtest/oops/test_markWord.cpp

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 74   JavaThread* THREAD = JavaThread::current();
 75   ThreadInVMfromNative invm(THREAD);
 76   ResourceMark rm(THREAD);
 77 
 78   oop obj = vmClasses::Byte_klass()->allocate_instance(THREAD);
 79 
 80   FlagSetting fs(WizardMode, true);
 81 
 82   HandleMark hm(THREAD);
 83   Handle h_obj(THREAD, obj);
 84 
 85   // Thread tries to lock it.
 86   {
 87     ObjectLocker ol(h_obj, THREAD);
 88     assert_test_pattern(h_obj, "locked");
 89   }
 90   assert_test_pattern(h_obj, "is_unlocked no_hash");
 91 
 92   // Hash the object then print it.
 93   intx hash = h_obj->identity_hash();
 94   assert_test_pattern(h_obj, "is_unlocked hash=0x");




 95 
 96   // Wait gets the lock inflated.
 97   {
 98     ObjectLocker ol(h_obj, THREAD);
 99 
100     Semaphore done(0);
101     LockerThread* st;
102     st = new LockerThread(&done, h_obj());
103     st->doit();
104 
105     ol.wait(THREAD);
106     assert_test_pattern(h_obj, "monitor");
107     done.wait_with_safepoint_check(THREAD);  // wait till the thread is done.
108   }
109 }
110 #endif // PRODUCT

 74   JavaThread* THREAD = JavaThread::current();
 75   ThreadInVMfromNative invm(THREAD);
 76   ResourceMark rm(THREAD);
 77 
 78   oop obj = vmClasses::Byte_klass()->allocate_instance(THREAD);
 79 
 80   FlagSetting fs(WizardMode, true);
 81 
 82   HandleMark hm(THREAD);
 83   Handle h_obj(THREAD, obj);
 84 
 85   // Thread tries to lock it.
 86   {
 87     ObjectLocker ol(h_obj, THREAD);
 88     assert_test_pattern(h_obj, "locked");
 89   }
 90   assert_test_pattern(h_obj, "is_unlocked no_hash");
 91 
 92   // Hash the object then print it.
 93   intx hash = h_obj->identity_hash();
 94   if (UseCompactObjectHeaders) {
 95     assert_test_pattern(h_obj, "is_unlocked hash is-hashed=true is-copied=false");
 96   } else {
 97     assert_test_pattern(h_obj, "is_unlocked hash=0x");
 98   }
 99 
100   // Wait gets the lock inflated.
101   {
102     ObjectLocker ol(h_obj, THREAD);
103 
104     Semaphore done(0);
105     LockerThread* st;
106     st = new LockerThread(&done, h_obj());
107     st->doit();
108 
109     ol.wait(THREAD);
110     assert_test_pattern(h_obj, "monitor");
111     done.wait_with_safepoint_check(THREAD);  // wait till the thread is done.
112   }
113 }
114 #endif // PRODUCT
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