com.oracle.svm.core.graal.snippets

Class DeoptTester

java.lang.Object

com.oracle.svm.core.graal.snippets.DeoptTester

public class DeoptTester
extends Object

Utility class for deoptimization stress test. Used if the DeoptimizeAll option is set.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	DeoptTester.Options

Field Summary

Fields

Modifier and Type	Field and Description
static SnippetRuntime.SubstrateForeignCallDescriptor	DEOPTTEST

Constructor Summary

Constructors

Constructor and Description
DeoptTester()

Method Summary

Modifier and Type	Method and Description
static void	deoptTest() Scans the stack frames and if there are some new (= so far not seen) PCs inside deoptimizable methods, a deopt is done.
static void	disableDeoptTesting() Temporarily disable deopt testing.
static boolean	enabled()
static void	enableDeoptTesting()

Methods inherited from class java.lang.Object

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

Field Detail

DEOPTTEST

public static final SnippetRuntime.SubstrateForeignCallDescriptor DEOPTTEST

Constructor Detail

DeoptTester

public DeoptTester()

Method Detail

enabled

public static boolean enabled()

deoptTest

public static void deoptTest()

Scans the stack frames and if there are some new (= so far not seen) PCs inside deoptimizable methods, a deopt is done. Foreign call: DeoptTester.DEOPTTEST.

disableDeoptTesting

public static void disableDeoptTesting()

Temporarily disable deopt testing. Must be paired with a call to DeoptTester.enableDeoptTesting(), best placed in a finally block. Only use this in code where Uninterruptible cannot be used and to which the checks in DeoptTester.deoptTest() do not apply.

enableDeoptTesting

public static void enableDeoptTesting()