org.robolectric.shadows

Class ShadowSharedMemory

java.lang.Object

org.robolectric.shadows.ShadowSharedMemory

@Implements(value=android.os.SharedMemory.class,
            minSdk=27,
            isInAndroidSdk=false)
public class ShadowSharedMemory
extends Object

A SharedMemory fake that uses a private temporary disk file for storage and Java’s MappedByteBuffer for the memory mappings.

Constructor Summary

Constructors

Constructor and Description
ShadowSharedMemory()

Method Summary

Modifier and Type	Method and Description
protected ByteBuffer	map(int prot, int offset, int length) Only works on SharedMemory instances from SharedMemory.create(java.lang.String, int).
protected static FileDescriptor	nCreate(String name, int size)
protected static int	nGetSize(FileDescriptor fd)
static void	setCreateShouldThrow(ErrnoException e) Causes subsequent calls to SharedMemory#create) to throw the specified exception, if non-null.
protected static void	unmap(ByteBuffer mappedBuf)

Methods inherited from class java.lang.Object

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

Constructor Detail

ShadowSharedMemory

public ShadowSharedMemory()

Method Detail

map

@Implementation
protected ByteBuffer map(int prot,
                                         int offset,
                                         int length)
                                  throws ErrnoException

Only works on SharedMemory instances from SharedMemory.create(java.lang.String, int).

“prot” is ignored – all mappings are read/write.

Throws:

ErrnoException

unmap

@Implementation
protected static void unmap(ByteBuffer mappedBuf)
                                     throws ErrnoException

Throws:

ErrnoException

nCreate

@Implementation
protected static FileDescriptor nCreate(String name,
                                                        int size)
                                                 throws ErrnoException

Throws:

ErrnoException

nGetSize

@Implementation
protected static int nGetSize(FileDescriptor fd)

setCreateShouldThrow

public static void setCreateShouldThrow(ErrnoException e)

Causes subsequent calls to SharedMemory#create) to throw the specified exception, if non-null. Pass null to restore create to normal operation.