com.oracle.graal.hotspot

Enum HotSpotForeignCallLinkage.Transition

java.lang.Object

java.lang.Enum<HotSpotForeignCallLinkage.Transition>

com.oracle.graal.hotspot.HotSpotForeignCallLinkage.Transition

All Implemented Interfaces:

Serializable, Comparable<HotSpotForeignCallLinkage.Transition>

Enclosing interface:

HotSpotForeignCallLinkage

public static enum HotSpotForeignCallLinkage.Transition
extends Enum<HotSpotForeignCallLinkage.Transition>

Constants for specifying whether a call is a leaf or not and whether a JavaFrameAnchor prologue and epilogue is required around the call. A leaf function does not lock, GC or throw exceptions.

Enum Constant Summary

Enum Constants

Enum Constant and Description
LEAF A call to a leaf function that might use floating point registers but will never have its caller stack inspected.
LEAF_NOFP A call to a leaf function that is guaranteed to not use floating point registers and will never have its caller stack inspected by the VM.
NOT_LEAF A function that may lock, GC or raise an exception and thus requires debug info to be associated with a call site to the function.
STACK_INSPECTABLE_LEAF A call to a leaf function that might use floating point registers and may have its caller stack inspected.

Method Summary

Modifier and Type	Method and Description
static HotSpotForeignCallLinkage.Transition	valueOf(String name) Returns the enum constant of this type with the specified name.
static HotSpotForeignCallLinkage.Transition[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

LEAF_NOFP

public static final HotSpotForeignCallLinkage.Transition LEAF_NOFP

A call to a leaf function that is guaranteed to not use floating point registers and will never have its caller stack inspected by the VM. That is, JavaFrameAnchor management around the call can be omitted.

LEAF

public static final HotSpotForeignCallLinkage.Transition LEAF

A call to a leaf function that might use floating point registers but will never have its caller stack inspected. That is, JavaFrameAnchor management around the call can be omitted.

STACK_INSPECTABLE_LEAF

public static final HotSpotForeignCallLinkage.Transition STACK_INSPECTABLE_LEAF

A call to a leaf function that might use floating point registers and may have its caller stack inspected. That is, JavaFrameAnchor management code around the call is required.

NOT_LEAF

public static final HotSpotForeignCallLinkage.Transition NOT_LEAF

A function that may lock, GC or raise an exception and thus requires debug info to be associated with a call site to the function. The execution stack may be inspected while in the called function. That is, JavaFrameAnchor management code around the call is required.

Method Detail

values

public static HotSpotForeignCallLinkage.Transition[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (HotSpotForeignCallLinkage.Transition c : HotSpotForeignCallLinkage.Transition.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static HotSpotForeignCallLinkage.Transition valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null