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org.python.modules.jffi

pack-priv Class AllocatedNativeMemory

extends BoundedNativeMemory
implements AllocatedDirectMemory
Class Inheritance
All Implemented Interfaces
org.python.modules.jffi.AllocatedDirectMemory, org.python.modules.jffi.DirectMemory, org.python.modules.jffi.Memory
Imports
org.python.core.Py

Field Summary

Modifier and TypeField and Description
private volatile boolean
private volatile boolean
private final long
storage

The real memory address

Inherited from org.python.modules.jffi.BoundedNativeMemory:
addressADDRESS_SIZEIOLONG_SIZEparentsize

Constructor Summary

AccessConstructor and Description
private
AllocatedNativeMemory(long address, int size, int align)

Method Summary

Modifier and TypeMethod and Description
pack-priv static final AllocatedNativeMemory

Returns:

A new AllocatedDirectMemory
allocate
(int
The number of bytes to allocate
size
,
boolean
Whether the memory should be cleared (zeroed)
clear
)

Allocates native memory

pack-priv static final AllocatedNativeMemory

Returns:

A new AllocatedDirectMemory
allocateAligned
(int
The number of bytes to allocate
size
,
int
The minimum alignment of the memory
align
,
boolean
Whether the memory should be cleared (zeroed)
clear
)

Allocates native memory, aligned to a minimum boundary.

protected void
finalize()

Overrides java.lang.Object.finalize.

Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.

public void
public void
Inherited from org.python.modules.jffi.BoundedNativeMemory:
equalsgetgetgetgetgetgetgetAddressgetAddressgetBytegetDoublegetFloatgetIntgetLonggetMemorygetNativeLonggetShortgetZeroTerminatedByteArrayhashCodeindexOfindexOfisDirectisNullputputputputputputputAddressputAddressputByteputDoubleputFloatputIntputLongputNativeLongputShortputZeroTerminatedByteArraysetMemoryslice

Field Detail

autoreleaseback to summary
private volatile boolean autorelease
releasedback to summary
private volatile boolean released
storageback to summary
private final long storage

The real memory address

Constructor Detail

AllocatedNativeMemoryback to summary
private AllocatedNativeMemory(long address, int size, int align)

Method Detail

allocateback to summary
pack-priv static final AllocatedNativeMemory allocate(int size, boolean clear)

Allocates native memory

Parameters
size:int

The number of bytes to allocate

clear:boolean

Whether the memory should be cleared (zeroed)

Returns:AllocatedNativeMemory

A new AllocatedDirectMemory

allocateAlignedback to summary
pack-priv static final AllocatedNativeMemory allocateAligned(int size, int align, boolean clear)

Allocates native memory, aligned to a minimum boundary.

Parameters
size:int

The number of bytes to allocate

align:int

The minimum alignment of the memory

clear:boolean

Whether the memory should be cleared (zeroed)

Returns:AllocatedNativeMemory

A new AllocatedDirectMemory

finalizeback to summary
protected void finalize() throws Throwable

Overrides java.lang.Object.finalize.

Doc from java.lang.Object.finalize.

Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. A subclass overrides the finalize method to dispose of system resources or to perform other cleanup.

When running in a Java virtual machine in which finalization has been disabled or removed, the garbage collector will never call finalize(). In a Java virtual machine in which finalization is enabled, the garbage collector might call finalize only after an indefinite delay.

The general contract of finalize is that it is invoked if and when the Java virtual machine has determined that there is no longer any means by which this object can be accessed by any thread that has not yet died, except as a result of an action taken by the finalization of some other object or class which is ready to be finalized. The finalize method may take any action, including making this object available again to other threads; the usual purpose of finalize, however, is to perform cleanup actions before the object is irrevocably discarded. For example, the finalize method for an object that represents an input/output connection might perform explicit I/O transactions to break the connection before the object is permanently discarded.

The finalize method of class Object performs no special action; it simply returns normally. Subclasses of Object may override this definition.

The Java programming language does not guarantee which thread will invoke the finalize method for any given object. It is guaranteed, however, that the thread that invokes finalize will not be holding any user-visible synchronization locks when finalize is invoked. If an uncaught exception is thrown by the finalize method, the exception is ignored and finalization of that object terminates.

After the finalize method has been invoked for an object, no further action is taken until the Java virtual machine has again determined that there is no longer any means by which this object can be accessed by any thread that has not yet died, including possible actions by other objects or classes which are ready to be finalized, at which point the object may be discarded.

The finalize method is never invoked more than once by a Java virtual machine for any given object.

Any exception thrown by the finalize method causes the finalization of this object to be halted, but is otherwise ignored.

Annotations
@Override
Exceptions
Throwable:
the Exception raised by this method
freeback to summary
public void free()

Implements org.python.modules.jffi.AllocatedDirectMemory.free.

setAutoReleaseback to summary
public void setAutoRelease(boolean release)

Implements org.python.modules.jffi.AllocatedDirectMemory.setAutoRelease.