com.oracle.graal.hotspot.stubs

Class NewArrayStub

java.lang.Object

com.oracle.graal.hotspot.stubs.Stub

com.oracle.graal.hotspot.stubs.SnippetStub

com.oracle.graal.hotspot.stubs.NewArrayStub

All Implemented Interfaces:

Snippets

public class NewArrayStub
extends SnippetStub

Stub implementing the fast path for TLAB refill during instance class allocation. This stub is called from the inline allocation code when TLAB allocation fails. If this stub fails to refill the TLAB or allocate the object, it calls out to the HotSpot C++ runtime to complete the allocation.

Field Summary

Fields

Modifier and Type	Field and Description
static ForeignCallDescriptor	NEW_ARRAY_C

Fields inherited from class com.oracle.graal.hotspot.stubs.SnippetStub

method, SnippetGraphUnderConstruction

Fields inherited from class com.oracle.graal.hotspot.stubs.Stub

code, compResult, linkage, providers

Constructor Summary

Constructors

Constructor and Description
NewArrayStub(HotSpotProviders providers, HotSpotForeignCallLinkage linkage)

Method Summary

Modifier and Type	Method and Description
private static boolean	logging()
protected Object[]	makeConstArgs()
private static Object	newArray(KlassPointer hub, int length, KlassPointer intArrayHub, Register threadRegister) Re-attempts allocation after an initial TLAB allocation failed or was skipped (e.g., due to -XX:-UseTLAB).
static void	newArrayC(ForeignCallDescriptor newArrayC, Word thread, KlassPointer hub, int length)

Methods inherited from class com.oracle.graal.hotspot.stubs.SnippetStub

checkConstArg, debugScopeContext, getConstantParameterValue, getGraph, getInstalledCodeOwner, toString

Methods inherited from class com.oracle.graal.hotspot.stubs.Stub

getCode, getCompilationResult, getDestroyedRegisters, getLinkage, getRegisterConfig, getStubs, initDestroyedRegisters, preservesRegisters

Methods inherited from class java.lang.Object

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

Field Detail

NEW_ARRAY_C

public static final ForeignCallDescriptor NEW_ARRAY_C

Constructor Detail

NewArrayStub

public NewArrayStub(HotSpotProviders providers,
                    HotSpotForeignCallLinkage linkage)

Method Detail

makeConstArgs

protected Object[] makeConstArgs()

Overrides:

makeConstArgs in class SnippetStub

logging

private static boolean logging()

newArray

private static Object newArray(KlassPointer hub,
                               int length,
                               KlassPointer intArrayHub,
                               Register threadRegister)

Re-attempts allocation after an initial TLAB allocation failed or was skipped (e.g., due to -XX:-UseTLAB).

Parameters:

hub - the hub of the object to be allocated

length - the length of the array

intArrayHub - the hub for int[].class

newArrayC

public static void newArrayC(ForeignCallDescriptor newArrayC,
                             Word thread,
                             KlassPointer hub,
                             int length)