Package org.qbicc.plugin.gc.common.safepoint

Class GlobalFlagSafePointStrategy

java.lang.Object

org.qbicc.plugin.gc.common.safepoint.AbstractSafePointStrategy

org.qbicc.plugin.gc.common.safepoint.AbstractMethodBasedSafePointStrategy

org.qbicc.plugin.gc.common.safepoint.GlobalFlagSafePointStrategy

public final class GlobalFlagSafePointStrategy
extends AbstractMethodBasedSafePointStrategy

A safepoint polling strategy which uses a single global flag field to indicate that a safepoint should be entered.

Field Summary

Fields inherited from class org.qbicc.plugin.gc.common.safepoint.AbstractSafePointStrategy

ctxt

Constructor Summary

Constructors

Constructor	Description
GlobalFlagSafePointStrategy(CompilationContext ctxt)

Method Summary

Modifier and Type	Method	Description
void	implementClearGlobalSafePoint(BasicBlockBuilder bbb)	Implement the method which clears a global safepoint request.
void	implementPollSafePoint(BasicBlockBuilder bbb)
void	implementRequestGlobalSafePoint(BasicBlockBuilder bbb)	Implement the method which requests a global safepoint.

Methods inherited from class org.qbicc.plugin.gc.common.safepoint.AbstractMethodBasedSafePointStrategy

forEachSafePointMethod, safePoint

Methods inherited from class org.qbicc.plugin.gc.common.safepoint.AbstractSafePointStrategy

registerReachableMethods

Methods inherited from class java.lang.Object

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

Constructor Details

GlobalFlagSafePointStrategy

public GlobalFlagSafePointStrategy(CompilationContext ctxt)

Method Details

implementRequestGlobalSafePoint

public void implementRequestGlobalSafePoint(BasicBlockBuilder bbb)

Description copied from class: AbstractSafePointStrategy

Implement the method which requests a global safepoint. The implementation must not throw any exception, poll for a safepoint, or call any method that may do either.

Specified by:

implementRequestGlobalSafePoint in class AbstractSafePointStrategy

Parameters:

bbb - the block builder (not null)

implementClearGlobalSafePoint

public void implementClearGlobalSafePoint(BasicBlockBuilder bbb)

Description copied from class: AbstractSafePointStrategy

Implement the method which clears a global safepoint request. The implementation must not throw any exception, poll for a safepoint, or call any method that may do either.

Specified by:

implementClearGlobalSafePoint in class AbstractSafePointStrategy

Parameters:

bbb - the block builder (not null)

implementPollSafePoint

public void implementPollSafePoint(BasicBlockBuilder bbb)

Specified by:

implementPollSafePoint in class AbstractMethodBasedSafePointStrategy