com.oracle.svm.core.thread

Class VMThreads.StatusSupport

java.lang.Object

com.oracle.svm.core.thread.VMThreads.StatusSupport

Enclosing class:

VMThreads

public static class VMThreads.StatusSupport
extends Object

A thread-local enum giving the thread status of a VMThread. And supporting methods.

Field Summary

Fields

Modifier and Type	Field and Description
static int	STATUS_CREATED IsolateThread memory has been allocated for the thread, but the thread is not on the VMThreads list yet.
static int	STATUS_ILLEGAL An illegal thread state for places where we need to pass a value.
static int	STATUS_IN_JAVA The thread is running in Java code.
static int	STATUS_IN_NATIVE The thread is running in native code.
static int	STATUS_IN_SAFEPOINT The thread has been requested to stop at a safepoint.
static int	STATUS_IN_VM The thread is running in trusted native code that was linked into the image.
static FastThreadLocalInt	statusTL The status of a IsolateThread.

Constructor Summary

Constructors

Constructor and Description
StatusSupport()

Method Summary

Modifier and Type	Method and Description
static void	assertStatusJava()
static void	assertStatusNativeOrSafepoint()
static void	assertStatusVM()
static boolean	compareAndSetNativeToNewStatus(int newStatus) A guarded transition from native to another status.
static boolean	compareAndSetNativeToSafepoint(org.graalvm.nativeimage.IsolateThread vmThread) There is no unguarded change to safepoint.
static int	getNewThreadStatus(org.graalvm.nativeimage.c.function.CFunction.Transition transition)
static int	getNewThreadStatus(CFunctionOptions.Transition transition)
static String	getStatusString(org.graalvm.nativeimage.IsolateThread vmThread) For debugging.
static int	getStatusVolatile()
static int	getStatusVolatile(org.graalvm.nativeimage.IsolateThread vmThread)
static boolean	isStatusCreated(org.graalvm.nativeimage.IsolateThread vmThread)
static boolean	isStatusJava()
static boolean	isStatusNativeOrSafepoint()
static boolean	isStatusNativeOrSafepoint(org.graalvm.nativeimage.IsolateThread vmThread)
static boolean	isStatusVM()
static boolean	isValidStatus(int status)
static void	setStatusIgnoreSafepoints()
static void	setStatusJavaUnguarded() An unguarded transition to Java.
static void	setStatusNative()
static void	setStatusNative(org.graalvm.nativeimage.IsolateThread vmThread)
static void	setStatusVM()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

statusTL

public static final FastThreadLocalInt statusTL

The status of a IsolateThread.

STATUS_ILLEGAL

public static final int STATUS_ILLEGAL

An illegal thread state for places where we need to pass a value.

See Also:

Constant Field Values

STATUS_CREATED

public static final int STATUS_CREATED

IsolateThread memory has been allocated for the thread, but the thread is not on the VMThreads list yet.

See Also:

Constant Field Values

STATUS_IN_JAVA

public static final int STATUS_IN_JAVA

The thread is running in Java code.

See Also:

Constant Field Values

STATUS_IN_SAFEPOINT

public static final int STATUS_IN_SAFEPOINT

The thread has been requested to stop at a safepoint.

See Also:

Constant Field Values

STATUS_IN_NATIVE

public static final int STATUS_IN_NATIVE

The thread is running in native code.

See Also:

Constant Field Values

STATUS_IN_VM

public static final int STATUS_IN_VM

The thread is running in trusted native code that was linked into the image.

See Also:

Constant Field Values

Constructor Detail

StatusSupport

public StatusSupport()

Method Detail

getStatusString

public static String getStatusString(org.graalvm.nativeimage.IsolateThread vmThread)

For debugging.

getStatusVolatile

public static int getStatusVolatile(org.graalvm.nativeimage.IsolateThread vmThread)

getStatusVolatile

public static int getStatusVolatile()

setStatusNative

public static void setStatusNative()

setStatusNative

public static void setStatusNative(org.graalvm.nativeimage.IsolateThread vmThread)

compareAndSetNativeToSafepoint

public static boolean compareAndSetNativeToSafepoint(org.graalvm.nativeimage.IsolateThread vmThread)

There is no unguarded change to safepoint.

setStatusJavaUnguarded

public static void setStatusJavaUnguarded()

An unguarded transition to Java.

setStatusVM

public static void setStatusVM()

compareAndSetNativeToNewStatus

public static boolean compareAndSetNativeToNewStatus(int newStatus)

A guarded transition from native to another status.

isStatusCreated

public static boolean isStatusCreated(org.graalvm.nativeimage.IsolateThread vmThread)

isStatusNativeOrSafepoint

public static boolean isStatusNativeOrSafepoint(org.graalvm.nativeimage.IsolateThread vmThread)

isStatusNativeOrSafepoint

public static boolean isStatusNativeOrSafepoint()

isStatusVM

public static boolean isStatusVM()

isStatusJava

public static boolean isStatusJava()

assertStatusJava

public static void assertStatusJava()

assertStatusNativeOrSafepoint

public static void assertStatusNativeOrSafepoint()

assertStatusVM

public static void assertStatusVM()

setStatusIgnoreSafepoints

public static void setStatusIgnoreSafepoints()

isValidStatus

public static boolean isValidStatus(int status)

getNewThreadStatus

public static int getNewThreadStatus(org.graalvm.nativeimage.c.function.CFunction.Transition transition)

getNewThreadStatus

public static int getNewThreadStatus(CFunctionOptions.Transition transition)