org.graalvm.compiler.core.common.util

Class CompilationAlarm

java.lang.Object

org.graalvm.compiler.core.common.util.CompilationAlarm

All Implemented Interfaces:

AutoCloseable

public final class CompilationAlarm
extends Object
implements AutoCloseable

Utility class that allows the compiler to monitor compilations that take a very long time.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	CompilationAlarm.Options

Method Summary

Modifier and Type	Method and Description
void	close()
static CompilationAlarm	current() Gets the current compilation alarm.
boolean	hasExpired() Determines if this alarm has expired.
static CompilationAlarm	trackCompilationPeriod(OptionValues options) Starts an alarm for setting a time limit on a compilation if there isn't already an active alarm and CompilationAlarm.Options.CompilationExpirationPeriod> 0.

Methods inherited from class java.lang.Object

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

Method Detail

current

public static CompilationAlarm current()

Gets the current compilation alarm. If there is no current alarm, a non-null value is returned that will always return false for CompilationAlarm.hasExpired().

hasExpired

public boolean hasExpired()

Determines if this alarm has expired. A compilation expires if it takes longer than CompilationAlarm.Options.CompilationExpirationPeriod.

Returns:

true if the current compilation already takes longer than CompilationAlarm.Options.CompilationExpirationPeriod, false otherwise

close

public void close()

Specified by:

close in interface AutoCloseable

trackCompilationPeriod

public static CompilationAlarm trackCompilationPeriod(OptionValues options)

Starts an alarm for setting a time limit on a compilation if there isn't already an active alarm and CompilationAlarm.Options.CompilationExpirationPeriod> 0. The returned value can be used in a try-with-resource statement to disable the alarm once the compilation is finished.

Returns:

a CompilationAlarm if there was no current alarm for the calling thread before this call otherwise null