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org.jikesrvm.scheduler
Class FinalizerThread

java.lang.Object
  extended by org.mmtk.plan.MutatorContext
      extended by org.mmtk.plan.SimpleMutator
          extended by org.mmtk.plan.StopTheWorldMutator
              extended by org.mmtk.plan.generational.GenMutator
                  extended by org.mmtk.plan.generational.immix.GenImmixMutator
                      extended by org.jikesrvm.mm.mminterface.Selected.Mutator
                          extended by org.jikesrvm.mm.mminterface.ThreadContext
                              extended by org.jikesrvm.scheduler.RVMThread
                                  extended by org.jikesrvm.scheduler.FinalizerThread
All Implemented Interfaces:
Constants
public class FinalizerThread
extends RVMThread

Finalizer thread. This thread is created by RVMThread.boot() at runtime startup. Its "run" method does the following: 1. yield to the gcwaitqueue, until scheduled by g.c. 2. For all objects on finalize Q, run the finalize() method 3. Go to 1 This thread comes out of wait state via notify from the garbage collector

Nested Class Summary
 
Nested classes/interfaces inherited from class org.jikesrvm.scheduler.RVMThread
RVMThread.AllButGCHardHandshakeVisitor, RVMThread.BlockAdapter, RVMThread.GCBlockAdapter, RVMThread.HandshakeBlockAdapter, RVMThread.HardHandshakeVisitor, RVMThread.SoftHandshakeVisitor, RVMThread.SuspendBlockAdapter, RVMThread.Waiting
 
Field Summary
private  Object[] none
           
private static Monitor schedLock
           
private static boolean shouldRun
           
private static int verbose
           
 
Fields inherited from class org.jikesrvm.scheduler.RVMThread
acctLock, activeMutatorContext, allButGC, ALWAYS_LOCK_ON_STATE_TRANSITION, arrayIndexTrapParam, asyncDebugRequestedForThisThread, asyncThrowable, atYieldpoint, awaitingSpinLock, BACKEDGE, barriersEntered, barriersExited, blockAdapters, BLOCKED_IN_JNI, BLOCKED_IN_NATIVE, bootThread, bridgeInstructions, cachedFreeLock, codePatchSyncRequested, contenderLink, contextRegisters, contextRegistersSave, countdownCBSCall, countdownCBSMethod, daemon, debugLock, debugRequested, debugThreads, doProfileReport, dumpLock, dumpStackOnBlock, EPILOGUE, execStatusTransitionHistogram, exitInProgress, feedlet, firstCBSCallSample, firstCBSMethodSample, flushRequested, fooFPOffset, framePointer, gcBlockAdapter, handshakeBlockAdapter, handshakeLock, handshakeThreads, hasInterrupt, hiddenSignatureId, IN_JAVA, IN_JAVA_TO_BLOCK, IN_JNI, IN_NATIVE, inDumpStack, isBlockedForGC, isBlockedForHandshake, isBlocking, isJoinable, isSuspended, isWaitingForOsr, jniEnv, LAST_EXEC_STATUS, lockingId, LOG_MAX_THREADS, MAX_THREADS, NATIVE_EPILOGUE, NATIVE_PROLOGUE, NEW, next, nextSlot, notifyAllOperations, notifyOperations, numCBSCallSamples, numCBSMethodSamples, numProcessors, numThreads, onStackReplacementEvent, osr_done, OSROPT, PRIMORDIAL_THREAD_INDEX, PROLOGUE, pthread_id, queuedOn, requesting_osr, shouldBlockForGC, shouldBlockForHandshake, shouldSuspend, shouldSuspendToken, sloppyExecStatusHistogram, softHandshakeDataLock, softHandshakeLeft, softHandshakeRequested, stackLimit, statusAtSTWHistogram, suspendBlockAdapter, systemThread, takeYieldpoint, TERMINATED, thread_cbs_counter, threadBySlot, threadingInitialized, threads, threadSlot, timedWaitOperations, timerTicks, timeSliceExpired, totalResumeTime, totalSuspendTime, trace, traceAboutToTerminate, traceAcct, traceBind, traceBlock, traceDetails, traceReallyBlock, tsFPOffset, waitCount, waiting, waitObject, waitOperations, yieldForCBSCall, yieldForCBSMethod, yieldpointRequestPending, yieldToOSRRequested
 
Fields inherited from class org.jikesrvm.mm.mminterface.ThreadContext
collectorContext
 
Fields inherited from class org.mmtk.plan.generational.GenMutator
arrayRemset, nursery, remset
 
Fields inherited from class org.mmtk.plan.MutatorContext
immortal, lgcode, log, los, nonmove, smcode
 
Fields inherited from interface org.mmtk.utility.Constants
ALIGNMENT_VALUE, ARRAY_ELEMENT, BITS_IN_ADDRESS, BITS_IN_BYTE, BITS_IN_CHAR, BITS_IN_INT, BITS_IN_PAGE, BITS_IN_SHORT, BITS_IN_WORD, BYTES_IN_ADDRESS, BYTES_IN_BYTE, BYTES_IN_CHAR, BYTES_IN_INT, BYTES_IN_KBYTE, BYTES_IN_MBYTE, BYTES_IN_PAGE, BYTES_IN_SHORT, BYTES_IN_WORD, CARD_MASK, CARD_META_PAGES_PER_REGION, INSTANCE_FIELD, LOG_BITS_IN_ADDRESS, LOG_BITS_IN_BYTE, LOG_BITS_IN_CHAR, LOG_BITS_IN_INT, LOG_BITS_IN_PAGE, LOG_BITS_IN_SHORT, LOG_BITS_IN_WORD, LOG_BYTES_IN_ADDRESS, LOG_BYTES_IN_ADDRESS_SPACE, LOG_BYTES_IN_BYTE, LOG_BYTES_IN_CHAR, LOG_BYTES_IN_INT, LOG_BYTES_IN_KBYTE, LOG_BYTES_IN_MBYTE, LOG_BYTES_IN_PAGE, LOG_BYTES_IN_SHORT, LOG_BYTES_IN_WORD, LOG_CARD_BYTES, LOG_CARD_GRAIN, LOG_CARD_META_BYTES, LOG_CARD_META_PAGES, LOG_CARD_META_SIZE, LOG_CARD_UNITS, LOG_MIN_ALIGNMENT, MAX_ALIGNMENT, MAX_BYTES_PADDING, MAX_INT, MIN_ALIGNMENT, MIN_INT, SUPPORT_CARD_SCANNING
 
Constructor Summary
FinalizerThread()
           
 
Method Summary
static void boot()
           
 void run()
          Run the finalizer thread (one per RVM)
static void schedule()
           
 
Methods inherited from class org.jikesrvm.scheduler.RVMThread
acknowledgeBlockRequests, assertAcceptableStates, assertAcceptableStates, assertUnacceptableStates, assertUnacceptableStates, assignThreadSlot, asyncBlock, attemptLeaveNativeNoBlock, beginPairHandshake, beginPairWith, beginPairWithCurrent, bind, bindIfRequested, block, block, blockedFor, checkBlock, checkDebugRequest, clearDisallowAllocationsByThisThread, clearEmergencyAllocation, clearInterrupted, clearOutOfMemoryError, clearPhysicalAllocationFailed, communicationLock, communicationLockForSlot, countStackFrames, disableYieldpoints, dump, dump, dump, dump, dump1DHisto, dumpAcct, dumpAll, dumpStack, dumpStack, dumpStack, dumpStackAndDie, dumpStats, dumpVirtualMachine, dumpWithPadding, emergencyAllocation, enableYieldpoints, endPairHandshake, endPairWith, endPairWithCurrent, enterJNIBlockedFromCallIntoNative, enterJNIBlockedFromJNIFunctionCall, enterJNIFromCallIntoNative, enterJNIFromJNIFunctionCall, enterNative, extDump, failIfYieldpointsDisabled, finishThreadTermination, fixupMovedStack, gcEnabled, getCollectionAttempt, getContextRegisters, getCurrentFeedlet, getCurrentThread, getCurrentThreadSlot, getDisableGCDepth, getDisallowAllocationsByThisThread, getExceptionRegisters, getExecStatus, getIsAboutToTerminate, getJavaLangThread, getJNIEnv, getLockingId, getName, getOutOfMemoryError, getPriority, getStack, getStackLength, getState, getThreadForStackTrace, getThreadSlot, handleHandshakeRequest, handleUncaughtException, hardHandshakeResume, hardHandshakeResume, hardHandshakeSuspend, hardHandshakeSuspend, hasNativeStackFrame, holdsLock, ignoreHandshakesAndGC, init, initializeJNIEnv, interrupt, isAlive, isBlocked, isBootThread, isDaemonThread, isGCThread, isInJava, isInterrupted, isSystemThread, join, leaveJNIBlockedFromCallIntoNative, leaveJNIBlockedFromJNIFunctionCall, leaveJNIFromCallIntoNative, leaveJNIFromJNIFunctionCall, leaveNative, makeDaemon, monitor, monitorForSlot, notify, notifyAll, notRunning, observeExecStatus, observeExecStatusAtSTW, observeStateTransition, park, physicalAllocationFailed, processAboutToTerminate, raiseIllegalMonitorStateException, releaseThreadSlot, reportCollectionAttempt, reportThreadTransitionCounts, resetCollectionAttempts, resizeCurrentStack, resume, safeAsyncBlock, safeBlock, safeToForceGCs, saveThreadState, setDisableGCDepth, setDisallowAllocationsByThisThread, setEmergencyAllocation, setName, setOutOfMemoryError, setPhysicalAllocationFailed, setPriority, setupBootJavaThread, setupBootThread, shouldBeSampled, sleep, sleep, snapshotHandshakeThreads, softHandshake, softRendezvous, softRendezvousCheckAndClear, softRendezvousCommit, start, stop, suspend, terminate, timerTick, toString, trace, trace, trace, traceback, traceback, tracebackWithoutLock, traceHex, transitionHistogramIndex, unblock, unpark, wait, wait, waitAbsoluteNanos, waitImpl, worldStopped, yield, yieldpoint, yieldpointFromBackedge, yieldpointFromEpilogue, yieldpointFromPrologue, yieldpointsEnabled
 
Methods inherited from class org.jikesrvm.mm.mminterface.Selected.Mutator
get, getThread
 
Methods inherited from class org.mmtk.plan.generational.immix.GenImmixMutator
alloc, collectionPhase, getAllocatorFromSpace, postAlloc
 
Methods inherited from class org.mmtk.plan.generational.GenMutator
assertRemsetsFlushed, flushRememberedSets, objectReferenceBulkCopy, objectReferenceNonHeapWrite, objectReferenceTryCompareAndSwap, objectReferenceWrite
 
Methods inherited from class org.mmtk.plan.MutatorContext
addressBulkCopy, addressRead, addressTryCompareAndSwap, addressWrite, booleanBulkCopy, booleanRead, booleanWrite, byteBulkCopy, byteRead, byteWrite, charBulkCopy, charRead, charWrite, checkAllocator, deinitMutator, doubleBulkCopy, doubleRead, doubleWrite, extentBulkCopy, extentRead, extentWrite, floatBulkCopy, floatRead, floatWrite, flush, getId, getLog, initMutator, intBulkCopy, intRead, intTryCompareAndSwap, intWrite, javaLangReferenceReadBarrier, longBulkCopy, longRead, longTryCompareAndSwap, longWrite, objectReferenceNonHeapRead, objectReferenceRead, offsetBulkCopy, offsetRead, offsetWrite, shortBulkCopy, shortRead, shortWrite, wordBulkCopy, wordRead, wordTryCompareAndSwap, wordWrite
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Field Detail

verbose

private static final int verbose
See Also:
Constant Field Values

none

private final Object[] none

shouldRun

private static boolean shouldRun

schedLock

private static Monitor schedLock
Constructor Detail

FinalizerThread

public FinalizerThread()
Method Detail

boot

public static void boot()

schedule

public static void schedule()

run

public void run()
Run the finalizer thread (one per RVM)

Overrides:
run in class RVMThread
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