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.

Constructor Summary

Constructors

Constructor and Description
StatusSupport()

Method Summary

Modifier and Type	Method and Description
static boolean	compareAndSetNativeToJava() A guarded transition from native to Java.
static boolean	compareAndSetNativeToSafepoint(org.graalvm.nativeimage.IsolateThread vmThread) There is no unguarded change to safepoint.
static String	getStatusString(org.graalvm.nativeimage.IsolateThread vmThread) For debugging.
static boolean	isStatusCreated(org.graalvm.nativeimage.IsolateThread vmThread)
static boolean	isStatusIgnoreSafepoints(org.graalvm.nativeimage.IsolateThread vmThread)
static boolean	isStatusJava()
static boolean	isStatusNative(org.graalvm.nativeimage.IsolateThread vmThread)
static boolean	isStatusSafepoint(org.graalvm.nativeimage.IsolateThread vmThread)
static void	setStatusIgnoreSafepoints() Make myself immune to safepoints.
static void	setStatusJavaUnguarded(org.graalvm.nativeimage.IsolateThread vmThread) An unguarded transition to Java.
static void	setStatusNative()
static void	setStatusNative(org.graalvm.nativeimage.IsolateThread vmThread)

Methods inherited from class java.lang.Object

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

Constructor Detail

StatusSupport

public StatusSupport()

Method Detail

getStatusString

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

For debugging.

isStatusCreated

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

isStatusNative

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

setStatusNative

public static void setStatusNative()

setStatusNative

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

isStatusSafepoint

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

compareAndSetNativeToSafepoint

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

There is no unguarded change to safepoint.

isStatusJava

public static boolean isStatusJava()

setStatusJavaUnguarded

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

An unguarded transition to Java.

compareAndSetNativeToJava

public static boolean compareAndSetNativeToJava()

A guarded transition from native to Java.

isStatusIgnoreSafepoints

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

setStatusIgnoreSafepoints

public static void setStatusIgnoreSafepoints()

Make myself immune to safepoints. Set the thread status to ensure that the safepoint mechanism ignores me. It is not necessary to clear a pending safepoint request (i.e., to reset the safepoint counter) because the safepoint slow path is going to do that in case.