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comparison agent/src/share/classes/sun/jvm/hotspot/runtime/Thread.java @ 702:b9fba36710f2

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6699669: Hotspot server leaves synchronized block with monitor in bad state Summary: Remove usage of _highest_lock field in Thread so that is_lock_owned won't depend on the correct update of that field. Reviewed-by: never, dice, acorn
author xlu
date Mon, 06 Apr 2009 15:47:39 -0700
parents a61af66fc99e
children bd02caa94611
comparison
equal deleted inserted replaced
697:922aedc96ef5 702:b9fba36710f2
36 private static int EXTERNAL_SUSPEND; 36 private static int EXTERNAL_SUSPEND;
37 private static int EXT_SUSPENDED; 37 private static int EXT_SUSPENDED;
38 private static int HAS_ASYNC_EXCEPTION; 38 private static int HAS_ASYNC_EXCEPTION;
39 39
40 private static AddressField activeHandlesField; 40 private static AddressField activeHandlesField;
41 private static AddressField highestLockField;
42 private static AddressField currentPendingMonitorField; 41 private static AddressField currentPendingMonitorField;
43 private static AddressField currentWaitingMonitorField; 42 private static AddressField currentWaitingMonitorField;
44 43
45 static { 44 static {
46 VM.registerVMInitializedObserver(new Observer() { 45 VM.registerVMInitializedObserver(new Observer() {
58 EXT_SUSPENDED = db.lookupIntConstant("Thread::_ext_suspended").intValue(); 57 EXT_SUSPENDED = db.lookupIntConstant("Thread::_ext_suspended").intValue();
59 HAS_ASYNC_EXCEPTION = db.lookupIntConstant("Thread::_has_async_exception").intValue(); 58 HAS_ASYNC_EXCEPTION = db.lookupIntConstant("Thread::_has_async_exception").intValue();
60 59
61 tlabFieldOffset = type.getField("_tlab").getOffset(); 60 tlabFieldOffset = type.getField("_tlab").getOffset();
62 activeHandlesField = type.getAddressField("_active_handles"); 61 activeHandlesField = type.getAddressField("_active_handles");
63 highestLockField = type.getAddressField("_highest_lock");
64 currentPendingMonitorField = type.getAddressField("_current_pending_monitor"); 62 currentPendingMonitorField = type.getAddressField("_current_pending_monitor");
65 currentWaitingMonitorField = type.getAddressField("_current_waiting_monitor"); 63 currentWaitingMonitorField = type.getAddressField("_current_waiting_monitor");
66 } 64 }
67 65
68 public Thread(Address addr) { 66 public Thread(Address addr) {
119 public void oopsDo(AddressVisitor oopVisitor) { 117 public void oopsDo(AddressVisitor oopVisitor) {
120 // FIXME: Empty for now; will later traverse JNI handles and 118 // FIXME: Empty for now; will later traverse JNI handles and
121 // pending exception 119 // pending exception
122 } 120 }
123 121
124 public Address highestLock() {
125 return highestLockField.getValue(addr);
126 }
127
128 public ObjectMonitor getCurrentPendingMonitor() { 122 public ObjectMonitor getCurrentPendingMonitor() {
129 Address monitorAddr = currentPendingMonitorField.getValue(addr); 123 Address monitorAddr = currentPendingMonitorField.getValue(addr);
130 if (monitorAddr == null) { 124 if (monitorAddr == null) {
131 return null; 125 return null;
132 } 126 }