org.graalvm.compiler.hotspot

Class HotSpotGraalServices

java.lang.Object

org.graalvm.compiler.hotspot.HotSpotGraalServices

public class HotSpotGraalServices
extends Object

Interface to HotSpot specific functionality that abstracts over which JDK version Graal is running on.

Constructor Summary

Constructors

Constructor and Description
HotSpotGraalServices()

Method Summary

Modifier and Type	Method and Description
static CompilationContext	enterGlobalCompilationContext() Enters the global context.
static void	exit(int status, HotSpotJVMCIRuntime runtime) Exits Graal's runtime.
static SpeculationLog	newHotSpotSpeculationLog(long cachedFailedSpeculationsAddress)
static CompilationContext	openLocalCompilationContext(Object description) Opens a local context that upon closing, will release foreign object references encapsulated by JavaConstants created in the context.

Methods inherited from class java.lang.Object

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

Constructor Detail

HotSpotGraalServices

public HotSpotGraalServices()

Method Detail

enterGlobalCompilationContext

public static CompilationContext enterGlobalCompilationContext()

Enters the global context. This is useful to escape a local context for execution that will create foreign object references that need to outlive the local context. Foreign object references encapsulated by JavaConstants created in the global context are only subject to reclamation once the JavaConstant wrapper dies.

Returns:

null if the current runtime does not support remote object references or if this thread is currently in the global context

openLocalCompilationContext

public static CompilationContext openLocalCompilationContext(Object description)

Opens a local context that upon closing, will release foreign object references encapsulated by JavaConstants created in the context.

Parameters:

description - an non-null object whose Object.toString() value describes the context being opened

Returns:

null if the current runtime does not support remote object references

exit

public static void exit(int status,
                        HotSpotJVMCIRuntime runtime)

Exits Graal's runtime. This calls System.exit(int) in HotSpot's runtime if possible otherwise calls System.exit(int) in the current runtime. This exists so that the HotSpot VM can be exited from within libgraal.

newHotSpotSpeculationLog

public static SpeculationLog newHotSpotSpeculationLog(long cachedFailedSpeculationsAddress)