org.bytedeco.cuda.nvcomp

Class PimplManager

java.lang.Object

org.bytedeco.javacpp.Pointer

org.bytedeco.cuda.nvcomp.nvcompManagerBase

org.bytedeco.cuda.nvcomp.PimplManager

All Implemented Interfaces:

AutoCloseable

Direct Known Subclasses:

ANSManager, BitcompManager, DeflateManager, GdeflateManager, LZ4Manager, SnappyManager, ZstdManager

@Namespace(value="nvcomp")
 @Properties(inherit=nvcomp.class)
public class PimplManager
extends nvcompManagerBase

\brief Interface class between nvcompManagerBase and algorithm specific implementation 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
PimplManager()
PimplManager(long size) Native array allocator.
PimplManager(Pointer p) Pointer cast constructor.

Method Summary

Modifier and Type	Method and Description
void	compress(byte[] uncomp_buffer, byte[] comp_buffer, CompressionConfig comp_config)
void	compress(byte[] uncomp_buffer, byte[] comp_buffer, CompressionConfig comp_config, SizeTPointer comp_size)
void	compress(ByteBuffer uncomp_buffer, ByteBuffer comp_buffer, CompressionConfig comp_config)
void	compress(ByteBuffer uncomp_buffer, ByteBuffer comp_buffer, CompressionConfig comp_config, SizeTPointer comp_size)
void	compress(BytePointer uncomp_buffer, BytePointer comp_buffer, CompressionConfig comp_config)
void	compress(BytePointer uncomp_buffer, BytePointer comp_buffer, CompressionConfig comp_config, SizeTPointer comp_size) \brief Perform compression asynchronously for a single buffer.
void	compress(PointerPointer uncomp_buffers, PointerPointer comp_buffers, CompressionConfig comp_configs, SizeTPointer comp_sizes) \brief Perform compression asynchronously for a batch of buffers.
CompressionConfig	configure_compression(long uncomp_buffer_size) \brief Configure the compression of a single buffer.
CompressionConfig	configure_compression(SizeTPointer uncomp_buffer_sizes) \brief Configure the compression of a batch of buffers.
DecompressionConfig	configure_decompression(byte[] comp_buffer)
DecompressionConfig	configure_decompression(byte[] comp_buffers, long batch_size)
DecompressionConfig	configure_decompression(byte[] comp_buffers, long batch_size, SizeTPointer comp_sizes)
DecompressionConfig	configure_decompression(byte[] comp_buffer, SizeTPointer comp_size)
DecompressionConfig	configure_decompression(ByteBuffer comp_buffer)
DecompressionConfig	configure_decompression(ByteBuffer comp_buffers, long batch_size)
DecompressionConfig	configure_decompression(ByteBuffer comp_buffers, long batch_size, SizeTPointer comp_sizes)
DecompressionConfig	configure_decompression(ByteBuffer comp_buffer, SizeTPointer comp_size)
DecompressionConfig	configure_decompression(BytePointer comp_buffer)
DecompressionConfig	configure_decompression(BytePointer comp_buffers, long batch_size)
DecompressionConfig	configure_decompression(BytePointer comp_buffers, long batch_size, SizeTPointer comp_sizes)
DecompressionConfig	configure_decompression(BytePointer comp_buffer, SizeTPointer comp_size) \brief Configure the decompression for a single buffer using a compressed buffer.
DecompressionConfig	configure_decompression(CompressionConfig comp_config) \brief Configure the decompression for a single buffer using a CompressionConfig object.
DecompressionConfig	configure_decompression(PointerPointer comp_buffers, long batch_size, SizeTPointer comp_sizes) \brief Configure the decompression for a batch of buffers using a compressed buffer.
void	deallocate_gpu_mem() \brief Frees any internal GPU memory used by the nvCOMP HLIF Returns this memory back through the deallocator if one was specified through set_scratch_allocators()
void	decompress(byte[] decomp_buffer, byte[] comp_buffer, DecompressionConfig decomp_config)
void	decompress(byte[] decomp_buffer, byte[] comp_buffer, DecompressionConfig decomp_config, SizeTPointer comp_size)
void	decompress(ByteBuffer decomp_buffer, ByteBuffer comp_buffer, DecompressionConfig decomp_config)
void	decompress(ByteBuffer decomp_buffer, ByteBuffer comp_buffer, DecompressionConfig decomp_config, SizeTPointer comp_size)
void	decompress(BytePointer decomp_buffer, BytePointer comp_buffer, DecompressionConfig decomp_config)
void	decompress(BytePointer decomp_buffer, BytePointer comp_buffer, DecompressionConfig decomp_config, SizeTPointer comp_size) \brief Perform decompression asynchronously of a single buffer.
void	decompress(PointerPointer decomp_buffers, PointerPointer comp_buffers, DecompressionConfig decomp_configs, SizeTPointer comp_sizes) \brief Perform decompression asynchronously of a batch of buffers.
long	get_compressed_output_size(byte[] comp_buffer)
SizeTPointer	get_compressed_output_size(byte[] comp_buffers, long batch_size)
long	get_compressed_output_size(ByteBuffer comp_buffer)
SizeTPointer	get_compressed_output_size(ByteBuffer comp_buffers, long batch_size)
long	get_compressed_output_size(BytePointer comp_buffer) \brief Computes the compressed output size (in bytes) of a given buffer.
SizeTPointer	get_compressed_output_size(BytePointer comp_buffers, long batch_size)
SizeTPointer	get_compressed_output_size(PointerPointer comp_buffers, long batch_size) \brief Computes the compressed output size (in bytes) of a given batch of buffers.
PimplManager	getPointer(long i)
PimplManager	position(long position)

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, getDirectBufferAddress, getPointer, getPointer, getPointer, hashCode, interruptDeallocatorThread, isNull, isNull, limit, limit, malloc, maxBytes, maxPhysicalBytes, memchr, memcmp, memcpy, memmove, memset, offsetAddress, offsetof, offsetof, parseBytes, physicalBytes, physicalBytesInaccurate, 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

PimplManager

public PimplManager(Pointer p)

Pointer cast constructor. Invokes Pointer(Pointer).

PimplManager

public PimplManager(long size)

Native array allocator. Access with Pointer.position(long).

PimplManager

public PimplManager()

Method Detail

position

public PimplManager position(long position)

Overrides:

position in class Pointer

getPointer

public PimplManager getPointer(long i)

Overrides:

getPointer in class Pointer

configure_compression

@ByVal
public CompressionConfig configure_compression(@Cast(value="const size_t")
                                                       long uncomp_buffer_size)

Description copied from class: nvcompManagerBase

\brief Configure the compression of a single buffer. This routine computes the size of the required result buffer. The result config also contains the nvcompStatus* that allows error checking.

Overrides:

configure_compression in class nvcompManagerBase

Parameters:

uncomp_buffer_size - [in] The uncompressed input data size (in bytes).

Returns:

CompressionConfig for the size provided.

configure_compression

@StdVector
public CompressionConfig configure_compression(@Cast(value="size_t*") @StdVector
                                                           SizeTPointer uncomp_buffer_sizes)

Description copied from class: nvcompManagerBase

\brief Configure the compression of a batch of buffers. This routine computes the size of the required result buffer for each element of the batch. The result config also contains the nvcompStatus* that allows error checking.

Overrides:

configure_compression in class nvcompManagerBase

Parameters:

uncomp_buffer_sizes - [in] The vector of uncompressed input data sizes (in bytes) for each element of the batch.

Returns:

A vector with CompressionConfig for each of the size provided.

compress

public void compress(@Cast(value="const uint8_t*")
                     BytePointer uncomp_buffer,
                     @Cast(value="uint8_t*")
                     BytePointer comp_buffer,
                     @Const @ByRef
                     CompressionConfig comp_config,
                     @Cast(value="size_t*")
                     SizeTPointer comp_size)

Description copied from class: nvcompManagerBase

\brief Perform compression asynchronously for a single buffer.

Overrides:

compress in class nvcompManagerBase

Parameters:

uncomp_buffer - [in] The uncompressed input data. (a pointer to device continuous memory).

comp_buffer - [out] The location to output the compressed data to. (a pointer to device continuous memory) Size requirement is provided in CompressionConfig.

comp_config - [in] Generated for the current uncomp_buffer with configure_compression.

comp_size - [out] The location to output size in bytes after compression. (a pointer to a single size_t variable on device) Optional when bitstream kind is NVCOMP_NATIVE.

compress

public void compress(@Cast(value="const uint8_t*")
                     BytePointer uncomp_buffer,
                     @Cast(value="uint8_t*")
                     BytePointer comp_buffer,
                     @Const @ByRef
                     CompressionConfig comp_config)

Overrides:

compress in class nvcompManagerBase

compress

public void compress(@Cast(value="const uint8_t*")
                     ByteBuffer uncomp_buffer,
                     @Cast(value="uint8_t*")
                     ByteBuffer comp_buffer,
                     @Const @ByRef
                     CompressionConfig comp_config,
                     @Cast(value="size_t*")
                     SizeTPointer comp_size)

Overrides:

compress in class nvcompManagerBase

compress

public void compress(@Cast(value="const uint8_t*")
                     ByteBuffer uncomp_buffer,
                     @Cast(value="uint8_t*")
                     ByteBuffer comp_buffer,
                     @Const @ByRef
                     CompressionConfig comp_config)

Overrides:

compress in class nvcompManagerBase

compress

public void compress(@Cast(value="const uint8_t*")
                     byte[] uncomp_buffer,
                     @Cast(value="uint8_t*")
                     byte[] comp_buffer,
                     @Const @ByRef
                     CompressionConfig comp_config,
                     @Cast(value="size_t*")
                     SizeTPointer comp_size)

Overrides:

compress in class nvcompManagerBase

compress

public void compress(@Cast(value="const uint8_t*")
                     byte[] uncomp_buffer,
                     @Cast(value="uint8_t*")
                     byte[] comp_buffer,
                     @Const @ByRef
                     CompressionConfig comp_config)

Overrides:

compress in class nvcompManagerBase

compress

public void compress(@Cast(value="const uint8_t*const*")
                     PointerPointer uncomp_buffers,
                     @Cast(value="uint8_t*const*")
                     PointerPointer comp_buffers,
                     @StdVector
                     CompressionConfig comp_configs,
                     @Cast(value="size_t*")
                     SizeTPointer comp_sizes)

Description copied from class: nvcompManagerBase

\brief Perform compression asynchronously for a batch of buffers. Batch size is inferred from comp_configs size.

Overrides:

compress in class nvcompManagerBase

Parameters:

uncomp_buffers - [in] The uncompressed input data. (a pointer to a host array of pointers to device continuous memory)

comp_buffers - [out] The location to output the compressed data to. (a pointer to a host array of pointers to device continuous memory) Size requirement is provided in CompressionConfig.

comp_configs - [in] Generated for the current uncomp_buffers with configure_compression.

comp_sizes - [out] The location to output size in bytes after compression. (a pointer to a device array, with size enough to contain batch_size elements of type size_t) Optional when bitstream kind is NVCOMP_NATIVE.

configure_decompression

@ByVal
public DecompressionConfig configure_decompression(@Cast(value="const uint8_t*")
                                                           BytePointer comp_buffer,
                                                           @Cast(value="const size_t*")
                                                           SizeTPointer comp_size)

Description copied from class: nvcompManagerBase

\brief Configure the decompression for a single buffer using a compressed buffer. Synchronizes the user stream. - If bitstream kind is NVCOMP_NATIVE, it will parse the header in comp_buffer. - If bitstream kind is RAW, it may be required (e.g for LZ4) to parse the whole comp_buffer, which could be significantly slower that other options. - If bitstream kind is WITH_UNCOMPRESSED_SIZE, it will read the size from the beginning of the comp_buffer.

Overrides:

configure_decompression in class nvcompManagerBase

Parameters:

comp_buffer - [in] The compressed input data. (a pointer to device continuous memory)

comp_size - [in] Size of the compressed input data. This is required only for RAW format. (a pointer to device variable with compressed size)

Returns:

DecompressionConfig for the comp_buffer provided.

configure_decompression

@ByVal
public DecompressionConfig configure_decompression(@Cast(value="const uint8_t*")
                                                           BytePointer comp_buffer)

Overrides:

configure_decompression in class nvcompManagerBase

configure_decompression

@ByVal
public DecompressionConfig configure_decompression(@Cast(value="const uint8_t*")
                                                           ByteBuffer comp_buffer,
                                                           @Cast(value="const size_t*")
                                                           SizeTPointer comp_size)

Overrides:

configure_decompression in class nvcompManagerBase

configure_decompression

@ByVal
public DecompressionConfig configure_decompression(@Cast(value="const uint8_t*")
                                                           ByteBuffer comp_buffer)

Overrides:

configure_decompression in class nvcompManagerBase

configure_decompression

@ByVal
public DecompressionConfig configure_decompression(@Cast(value="const uint8_t*")
                                                           byte[] comp_buffer,
                                                           @Cast(value="const size_t*")
                                                           SizeTPointer comp_size)

Overrides:

configure_decompression in class nvcompManagerBase

configure_decompression

@ByVal
public DecompressionConfig configure_decompression(@Cast(value="const uint8_t*")
                                                           byte[] comp_buffer)

Overrides:

configure_decompression in class nvcompManagerBase

configure_decompression

@StdVector
public DecompressionConfig configure_decompression(@Cast(value="const uint8_t*const*")
                                                               PointerPointer comp_buffers,
                                                               @Cast(value="size_t")
                                                               long batch_size,
                                                               @Cast(value="const size_t*")
                                                               SizeTPointer comp_sizes)

Description copied from class: nvcompManagerBase

\brief Configure the decompression for a batch of buffers using a compressed buffer. Synchronizes the user stream. - If bitstream kind is NVCOMP_NATIVE, it will parse the header in comp_buffers. - If bitstream kind is RAW, it may be required (e.g for LZ4) to parse the whole comp_buffers, which could be significantly slower that other options. - If bitstream kind is WITH_UNCOMPRESSED_SIZE, it will read the size from the beginning of the comp_buffers.

Overrides:

configure_decompression in class nvcompManagerBase

Parameters:

comp_buffers - [in] The compressed input data. (a pointer to host arrays of pointers to device continuous memory)

batch_size - [in] The size of the batch.

comp_sizes - [in] Size of the compressed input data. (a pointer to device array) This is required only for RAW format.

Returns:

A vector of DecompressionConfig for each of the comp_buffer provided.

configure_decompression

@StdVector
public DecompressionConfig configure_decompression(@Cast(value="const uint8_t*const*") @ByPtrPtr
                                                               BytePointer comp_buffers,
                                                               @Cast(value="size_t")
                                                               long batch_size)

Overrides:

configure_decompression in class nvcompManagerBase

configure_decompression

@StdVector
public DecompressionConfig configure_decompression(@Cast(value="const uint8_t*const*") @ByPtrPtr
                                                               BytePointer comp_buffers,
                                                               @Cast(value="size_t")
                                                               long batch_size,
                                                               @Cast(value="const size_t*")
                                                               SizeTPointer comp_sizes)

Overrides:

configure_decompression in class nvcompManagerBase

configure_decompression

@StdVector
public DecompressionConfig configure_decompression(@Cast(value="const uint8_t*const*") @ByPtrPtr
                                                               ByteBuffer comp_buffers,
                                                               @Cast(value="size_t")
                                                               long batch_size,
                                                               @Cast(value="const size_t*")
                                                               SizeTPointer comp_sizes)

Overrides:

configure_decompression in class nvcompManagerBase

configure_decompression

@StdVector
public DecompressionConfig configure_decompression(@Cast(value="const uint8_t*const*") @ByPtrPtr
                                                               ByteBuffer comp_buffers,
                                                               @Cast(value="size_t")
                                                               long batch_size)

Overrides:

configure_decompression in class nvcompManagerBase

configure_decompression

@StdVector
public DecompressionConfig configure_decompression(@Cast(value="const uint8_t*const*") @ByPtrPtr
                                                               byte[] comp_buffers,
                                                               @Cast(value="size_t")
                                                               long batch_size,
                                                               @Cast(value="const size_t*")
                                                               SizeTPointer comp_sizes)

Overrides:

configure_decompression in class nvcompManagerBase

configure_decompression

@StdVector
public DecompressionConfig configure_decompression(@Cast(value="const uint8_t*const*") @ByPtrPtr
                                                               byte[] comp_buffers,
                                                               @Cast(value="size_t")
                                                               long batch_size)

Overrides:

configure_decompression in class nvcompManagerBase

configure_decompression

@ByVal
public DecompressionConfig configure_decompression(@Const @ByRef
                                                           CompressionConfig comp_config)

Description copied from class: nvcompManagerBase

\brief Configure the decompression for a single buffer using a CompressionConfig object. Does not synchronize the user stream.

Overrides:

configure_decompression in class nvcompManagerBase

Parameters:

comp_config - [in] The config used to compress a buffer.

Returns:

DecompressionConfig based on compression config provided.

decompress

public void decompress(@Cast(value="uint8_t*")
                       BytePointer decomp_buffer,
                       @Cast(value="const uint8_t*")
                       BytePointer comp_buffer,
                       @Const @ByRef
                       DecompressionConfig decomp_config,
                       @Cast(value="size_t*")
                       SizeTPointer comp_size)

Description copied from class: nvcompManagerBase

\brief Perform decompression asynchronously of a single buffer.

Overrides:

decompress in class nvcompManagerBase

Parameters:

decomp_buffer - [out] The location to output the decompressed data to. (a pointer to device continuous memory) Size requirement is provided in DecompressionConfig.

comp_buffer - [in] The compressed input data. (a pointer to device continuous memory)

decomp_config - [in] Resulted from configure_decompression given this comp_buffer. Contains nvcompStatus* in host/device-accessible memory to allow error checking.

comp_size - [in] The size of compressed input data passed. (a pointer to a single size_t variable on device) Optional when bitstream kind is NVCOMP_NATIVE.

decompress

public void decompress(@Cast(value="uint8_t*")
                       BytePointer decomp_buffer,
                       @Cast(value="const uint8_t*")
                       BytePointer comp_buffer,
                       @Const @ByRef
                       DecompressionConfig decomp_config)

Overrides:

decompress in class nvcompManagerBase

decompress

public void decompress(@Cast(value="uint8_t*")
                       ByteBuffer decomp_buffer,
                       @Cast(value="const uint8_t*")
                       ByteBuffer comp_buffer,
                       @Const @ByRef
                       DecompressionConfig decomp_config,
                       @Cast(value="size_t*")
                       SizeTPointer comp_size)

Overrides:

decompress in class nvcompManagerBase

decompress

public void decompress(@Cast(value="uint8_t*")
                       ByteBuffer decomp_buffer,
                       @Cast(value="const uint8_t*")
                       ByteBuffer comp_buffer,
                       @Const @ByRef
                       DecompressionConfig decomp_config)

Overrides:

decompress in class nvcompManagerBase

decompress

public void decompress(@Cast(value="uint8_t*")
                       byte[] decomp_buffer,
                       @Cast(value="const uint8_t*")
                       byte[] comp_buffer,
                       @Const @ByRef
                       DecompressionConfig decomp_config,
                       @Cast(value="size_t*")
                       SizeTPointer comp_size)

Overrides:

decompress in class nvcompManagerBase

decompress

public void decompress(@Cast(value="uint8_t*")
                       byte[] decomp_buffer,
                       @Cast(value="const uint8_t*")
                       byte[] comp_buffer,
                       @Const @ByRef
                       DecompressionConfig decomp_config)

Overrides:

decompress in class nvcompManagerBase

decompress

public void decompress(@Cast(value="uint8_t*const*")
                       PointerPointer decomp_buffers,
                       @Cast(value="const uint8_t*const*")
                       PointerPointer comp_buffers,
                       @StdVector
                       DecompressionConfig decomp_configs,
                       @Cast(value="const size_t*")
                       SizeTPointer comp_sizes)

Description copied from class: nvcompManagerBase

\brief Perform decompression asynchronously of a batch of buffers.

Overrides:

decompress in class nvcompManagerBase

Parameters:

decomp_buffers - [out] The location to output the decompressed data to. (a pointer to a host array of pointers to device continuous memory) Size requirement is provided in DecompressionConfig.

comp_buffers - [in] The compressed input data. (a pointer to a host array of pointers to device continuous memory with uncompressed data)

decomp_configs - [in] Resulted from configure_decompression given this comp_buffers. Contains nvcompStatus* in host/device-accessible memory to allow error checking.

comp_sizes - [in] The size of compressed input data passed. (a pointer to a device array, with size enough to contain batch_size elements of type size_t) Optional when bitstream kind is NVCOMP_NATIVE.

get_compressed_output_size

@Cast(value="size_t")
public long get_compressed_output_size(@Cast(value="const uint8_t*")
                                                              BytePointer comp_buffer)

Description copied from class: nvcompManagerBase

\brief Computes the compressed output size (in bytes) of a given buffer. Synchronously copies the size of the compressed buffer to a host variable for return. Can only be used with NVCOMP_NATIVE bitstream kind. To obtain compressed sizes one can also cudaMemcpy sizes from comp_sizes passed to compress function.

Overrides:

get_compressed_output_size in class nvcompManagerBase

Parameters:

comp_buffer - [in] The compressed input data. (a pointer to device continuous memory)

Returns:

Size of the compressed buffer.

get_compressed_output_size

@Cast(value="size_t")
public long get_compressed_output_size(@Cast(value="const uint8_t*")
                                                              ByteBuffer comp_buffer)

Overrides:

get_compressed_output_size in class nvcompManagerBase

get_compressed_output_size

@Cast(value="size_t")
public long get_compressed_output_size(@Cast(value="const uint8_t*")
                                                              byte[] comp_buffer)

Overrides:

get_compressed_output_size in class nvcompManagerBase

get_compressed_output_size

@Cast(value="size_t*")
 @StdVector
public SizeTPointer get_compressed_output_size(@Cast(value="const uint8_t*const*")
                                                                                    PointerPointer comp_buffers,
                                                                                    @Cast(value="size_t")
                                                                                    long batch_size)

Description copied from class: nvcompManagerBase

\brief Computes the compressed output size (in bytes) of a given batch of buffers. Synchronously copies the size of the compressed buffer to a host variable for return. Can only be used with NVCOMP_NATIVE bitstream kind. To obtain compressed sizes one can also cudaMemcpy sizes from comp_sizes passed to compress function.

Overrides:

get_compressed_output_size in class nvcompManagerBase

Parameters:

comp_buffers - [in] The compressed input data. (a pointer host array of pointers to device continuous memory)

Returns:

A vector with sizes of each compressed buffer in the batch.

get_compressed_output_size

@Cast(value="size_t*")
 @StdVector
public SizeTPointer get_compressed_output_size(@Cast(value="const uint8_t*const*") @ByPtrPtr
                                                                                    BytePointer comp_buffers,
                                                                                    @Cast(value="size_t")
                                                                                    long batch_size)

Overrides:

get_compressed_output_size in class nvcompManagerBase

get_compressed_output_size

@Cast(value="size_t*")
 @StdVector
public SizeTPointer get_compressed_output_size(@Cast(value="const uint8_t*const*") @ByPtrPtr
                                                                                    ByteBuffer comp_buffers,
                                                                                    @Cast(value="size_t")
                                                                                    long batch_size)

Overrides:

get_compressed_output_size in class nvcompManagerBase

get_compressed_output_size

@Cast(value="size_t*")
 @StdVector
public SizeTPointer get_compressed_output_size(@Cast(value="const uint8_t*const*") @ByPtrPtr
                                                                                    byte[] comp_buffers,
                                                                                    @Cast(value="size_t")
                                                                                    long batch_size)

Overrides:

get_compressed_output_size in class nvcompManagerBase

deallocate_gpu_mem

public void deallocate_gpu_mem()

Description copied from class: nvcompManagerBase

\brief Frees any internal GPU memory used by the nvCOMP HLIF Returns this memory back through the deallocator if one was specified through set_scratch_allocators()

Overrides:

deallocate_gpu_mem in class nvcompManagerBase