org.bytedeco.arrow

Class ProxyMemoryPool

java.lang.Object

org.bytedeco.javacpp.Pointer

org.bytedeco.arrow.MemoryPool

org.bytedeco.arrow.ProxyMemoryPool

All Implemented Interfaces:

AutoCloseable

@Namespace(value="arrow")
 @NoOffset
 @Properties(inherit=arrow.class)
public class ProxyMemoryPool
extends MemoryPool

Derived class for memory allocation. Tracks the number of bytes and maximum memory allocated through its direct calls. Actual allocation is delegated to MemoryPool class.

Nested Class Summary

Nested classes/interfaces inherited from class org.bytedeco.javacpp.Pointer

Pointer.CustomDeallocator, Pointer.Deallocator, Pointer.NativeDeallocator, Pointer.ReferenceCounter

Field Summary

Fields inherited from class org.bytedeco.javacpp.Pointer

address, capacity, limit, position

Constructor Summary

Constructors

Constructor and Description
ProxyMemoryPool(MemoryPool pool)
ProxyMemoryPool(Pointer p) Pointer cast constructor.

Method Summary

Modifier and Type	Method and Description
Status	Allocate(long size, byte[] out)
Status	Allocate(long size, ByteBuffer out)
Status	Allocate(long size, BytePointer out)
Status	Allocate(long size, PointerPointer out) Allocate a new memory region of at least size bytes.
String	backend_name() The name of the backend used by this MemoryPool (e.g.
long	bytes_allocated() The number of bytes that were allocated and not yet free'd through this allocator.
void	Free(byte[] buffer, long size)
void	Free(ByteBuffer buffer, long size)
void	Free(BytePointer buffer, long size) Free an allocated region.
long	max_memory() Return peak memory allocation in this memory pool
Status	Reallocate(long old_size, long new_size, byte[] ptr)
Status	Reallocate(long old_size, long new_size, ByteBuffer ptr)
Status	Reallocate(long old_size, long new_size, BytePointer ptr)
Status	Reallocate(long old_size, long new_size, PointerPointer ptr) Resize an already allocated memory section.

Methods inherited from class org.bytedeco.arrow.MemoryPool

CreateDefault

Methods inherited from class org.bytedeco.javacpp.Pointer

address, asBuffer, asByteBuffer, availablePhysicalBytes, calloc, capacity, capacity, close, deallocate, deallocate, deallocateReferences, deallocator, deallocator, equals, fill, formatBytes, free, getPointer, getPointer, getPointer, getPointer, hashCode, isNull, isNull, limit, limit, malloc, maxBytes, maxPhysicalBytes, memchr, memcmp, memcpy, memmove, memset, offsetof, offsetof, parseBytes, physicalBytes, position, position, put, realloc, referenceCount, releaseReference, retainReference, setNull, sizeof, sizeof, toString, totalBytes, totalCount, totalPhysicalBytes, withDeallocator, zero

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

ProxyMemoryPool

public ProxyMemoryPool(Pointer p)

Pointer cast constructor. Invokes Pointer.Pointer(Pointer).

ProxyMemoryPool

public ProxyMemoryPool(MemoryPool pool)

Method Detail

Allocate

@ByVal
public Status Allocate(@Cast(value="int64_t")
                               long size,
                               @Cast(value="uint8_t**")
                               PointerPointer out)

Description copied from class: MemoryPool

Allocate a new memory region of at least size bytes. The allocated region shall be 64-byte aligned.

Overrides:

Allocate in class MemoryPool

Allocate

@ByVal
public Status Allocate(@Cast(value="int64_t")
                               long size,
                               @Cast(value="uint8_t**") @ByPtrPtr
                               BytePointer out)

Overrides:

Allocate in class MemoryPool

Allocate

@ByVal
public Status Allocate(@Cast(value="int64_t")
                               long size,
                               @Cast(value="uint8_t**") @ByPtrPtr
                               ByteBuffer out)

Overrides:

Allocate in class MemoryPool

Allocate

@ByVal
public Status Allocate(@Cast(value="int64_t")
                               long size,
                               @Cast(value="uint8_t**") @ByPtrPtr
                               byte[] out)

Overrides:

Allocate in class MemoryPool

Reallocate

@ByVal
public Status Reallocate(@Cast(value="int64_t")
                                 long old_size,
                                 @Cast(value="int64_t")
                                 long new_size,
                                 @Cast(value="uint8_t**")
                                 PointerPointer ptr)

Description copied from class: MemoryPool

Resize an already allocated memory section. As by default most default allocators on a platform don't support aligned reallocation, this function can involve a copy of the underlying data.

Overrides:

Reallocate in class MemoryPool

Reallocate

@ByVal
public Status Reallocate(@Cast(value="int64_t")
                                 long old_size,
                                 @Cast(value="int64_t")
                                 long new_size,
                                 @Cast(value="uint8_t**") @ByPtrPtr
                                 BytePointer ptr)

Overrides:

Reallocate in class MemoryPool

Reallocate

@ByVal
public Status Reallocate(@Cast(value="int64_t")
                                 long old_size,
                                 @Cast(value="int64_t")
                                 long new_size,
                                 @Cast(value="uint8_t**") @ByPtrPtr
                                 ByteBuffer ptr)

Overrides:

Reallocate in class MemoryPool

Reallocate

@ByVal
public Status Reallocate(@Cast(value="int64_t")
                                 long old_size,
                                 @Cast(value="int64_t")
                                 long new_size,
                                 @Cast(value="uint8_t**") @ByPtrPtr
                                 byte[] ptr)

Overrides:

Reallocate in class MemoryPool

Free

public void Free(@Cast(value="uint8_t*")
                 BytePointer buffer,
                 @Cast(value="int64_t")
                 long size)

Description copied from class: MemoryPool

Free an allocated region.

Overrides:

Free in class MemoryPool

Parameters:

buffer - Pointer to the start of the allocated memory region

size - Allocated size located at buffer. An allocator implementation may use this for tracking the amount of allocated bytes as well as for faster deallocation if supported by its backend.

Free

public void Free(@Cast(value="uint8_t*")
                 ByteBuffer buffer,
                 @Cast(value="int64_t")
                 long size)

Overrides:

Free in class MemoryPool

Free

public void Free(@Cast(value="uint8_t*")
                 byte[] buffer,
                 @Cast(value="int64_t")
                 long size)

Overrides:

Free in class MemoryPool

bytes_allocated

@Cast(value="int64_t")
public long bytes_allocated()

Description copied from class: MemoryPool

The number of bytes that were allocated and not yet free'd through this allocator.

Overrides:

bytes_allocated in class MemoryPool

max_memory

@Cast(value="int64_t")
public long max_memory()

Description copied from class: MemoryPool

Return peak memory allocation in this memory pool

Overrides:

max_memory in class MemoryPool

Returns:

Maximum bytes allocated. If not known (or not implemented), returns -1

backend_name

@StdString
public String backend_name()

Description copied from class: MemoryPool

The name of the backend used by this MemoryPool (e.g. "system" or "jemalloc");

Overrides:

backend_name in class MemoryPool