Interface WriteBarrierSetLIRGeneratorTool

All Superinterfaces:

BarrierSetLIRGeneratorTool

All Known Implementing Classes:

AArch64G1BarrierSetLIRGenerator, AMD64G1BarrierSetLIRGenerator

public interface WriteBarrierSetLIRGeneratorTool
extends BarrierSetLIRGeneratorTool

The platform independent base class for LIR generation for garbage collectors that need write barriers. Platform dependent operations are added in subinterfaces.

Method Summary

Modifier and Type	Method	Description
void	emitPostWriteBarrier(LIRGeneratorTool lirTool, jdk.vm.ci.meta.Value address, jdk.vm.ci.meta.Value value, boolean nonNull)
void	emitPreWriteBarrier(LIRGeneratorTool lirTool, jdk.vm.ci.meta.Value address, jdk.vm.ci.meta.AllocatableValue expectedObject, boolean nonNull)

Method Details

emitPreWriteBarrier

void emitPreWriteBarrier(LIRGeneratorTool lirTool,
 jdk.vm.ci.meta.Value address,
 jdk.vm.ci.meta.AllocatableValue expectedObject,
 boolean nonNull)

Parameters:

address - the location being updated

expectedObject - the expected pre-value if known

nonNull - true if expectedObject is known to non-null

emitPostWriteBarrier

void emitPostWriteBarrier(LIRGeneratorTool lirTool,
 jdk.vm.ci.meta.Value address,
 jdk.vm.ci.meta.Value value,
 boolean nonNull)

Parameters:

address - the location being updated

value - the value being written

nonNull - true if value is known to be non-null