pyarrow.plasma.PlasmaBuffer¶

class pyarrow.plasma.PlasmaBuffer¶

Bases: Buffer

DEPRECATED: This is the type returned by calls to get with a PlasmaClient.

We define our own class instead of directly returning a buffer object so that we can add a custom destructor which notifies Plasma that the object is no longer being used, so the memory in the Plasma store backing the object can potentially be freed.

Deprecated since version 10.0.0: Plasma is deprecated since Arrow 10.0.0. It will be removed in 12.0.0 or so.

Attributes:

object_idObjectID: The ID of the object in the buffer.
clientPlasmaClient: The PlasmaClient that we use to communicate with the store and manager.

__init__(*args, **kwargs)¶

Methods

`__init__`(args, *kwargs)
`equals`(self, Buffer other)	Determine if two buffers contain exactly the same data.
`hex`(self)	Compute hexadecimal representation of the buffer.
`slice`(self[, offset, length])	Slice this buffer.
`to_pybytes`(self)	Return this buffer as a Python bytes object.

Attributes

`address`	The buffer's address, as an integer.
`is_cpu`	Whether the buffer is CPU-accessible.
`is_mutable`	Whether the buffer is mutable.
`parent`
`size`	The buffer size in bytes.

address¶

The buffer’s address, as an integer.

The returned address may point to CPU or device memory. Use is_cpu() to disambiguate.

equals(self, Buffer other)¶

Determine if two buffers contain exactly the same data.

Parameters:

otherBuffer

Returns:

are_equalbool: True if buffer contents and size are equal

hex(self)¶

Compute hexadecimal representation of the buffer.

Returns:

: bytes

is_cpu¶: Whether the buffer is CPU-accessible.

is_mutable¶: Whether the buffer is mutable.

parent¶

size¶: The buffer size in bytes.

slice(self, offset=0, length=None)¶

Slice this buffer. Memory is not copied.

You can also use the Python slice notation buffer[start:stop].

Parameters:

offsetint, default 0: Offset from start of buffer to slice.
lengthint, default None: Length of slice (default is until end of Buffer starting from offset).

Returns:

slicedBuffer: A logical view over this buffer.

to_pybytes(self)¶: Return this buffer as a Python bytes object. Memory is copied.

pyarrow.plasma.PlasmaClient

CUDA Integration