jnr.ffi.provider
Class ParameterFlags

java.lang.Object
  jnr.ffi.provider.ParameterFlags

public final class ParameterFlags
extends Object

Field Summary

static int	DIRECT When allocating memory for the parameter, allocate a persistent memory block
static int	IN Contents of the parameter memory will be copied from from java to native memory
static int	NULTERMINATE The contents of the java array should have a zero byte appended
static int	OUT Contents of the parameter memory will be copied from native memory back to java
static int	PINNED The java array memory should be pinned by the JVM during the function call
static int	TRANSIENT When allocating memory for the parameter, a temporary memory block can be used

Method Summary

static boolean	isDirect(int flags)
static boolean	isFlag(Annotation annotation) Checks if the annotation is a recognised parameter flag.
static boolean	isIn(int flags)
static boolean	isNulTerminate(int flags)
static boolean	isOut(int flags)
static boolean	isPinned(int flags)
static boolean	isTransient(int flags)
static int	parse(Annotation[] annotations)

Methods inherited from class java.lang.Object

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

Field Detail

OUT

public static final int OUT

Contents of the parameter memory will be copied from native memory back to java

See Also:

Constant Field Values

IN

public static final int IN

Contents of the parameter memory will be copied from from java to native memory

See Also:

Constant Field Values

PINNED

public static final int PINNED

The java array memory should be pinned by the JVM during the function call

See Also:

Constant Field Values

NULTERMINATE

public static final int NULTERMINATE

The contents of the java array should have a zero byte appended

See Also:

Constant Field Values

TRANSIENT

public static final int TRANSIENT

When allocating memory for the parameter, a temporary memory block can be used

See Also:

Constant Field Values

DIRECT

public static final int DIRECT

When allocating memory for the parameter, allocate a persistent memory block

See Also:

Constant Field Values

Method Detail

parse

public static final int parse(Annotation[] annotations)

isFlag

public static final boolean isFlag(Annotation annotation)

Checks if the annotation is a recognised parameter flag.

Parameters:

annotation - the annotation to check.

Returns:

true if the annotation is a parameter flag

isPinned

public static final boolean isPinned(int flags)

isTransient

public static final boolean isTransient(int flags)

isDirect

public static final boolean isDirect(int flags)

isNulTerminate

public static final boolean isNulTerminate(int flags)

isOut

public static final boolean isOut(int flags)

isIn

public static final boolean isIn(int flags)