BMemoryStore Class Reference
[Data Model]

#include <support/MemoryStore.h>

Inheritance diagram for BMemoryStore:

List of all members.

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Detailed Description

Generic implementation of storage and byte streams on a block of memory.

This class can be used as-is on an existing pieces of memory (which is very dangerous due to reference counting), or subclasses can provide their own memory management semantics (such as BMallocStore).

Todo:

Change this to be based off of BStreamDatum.

Public Member Functions
status_t	AssertSpace (size_t newSize)
	BMemoryStore (const void *data, size_t size)
	BMemoryStore (void *data, size_t size)
	BMemoryStore (const BMemoryStore &)
	BMemoryStore ()
const void *	Buffer () const
	Direct access to the buffer.
size_t	BufferSize () const
	Direct access to buffer size.
int32_t	Compare (const BMemoryStore &) const
status_t	Copy (const BMemoryStore &)
virtual SValue	Inspect (const sptr< IBinder > &caller, const SValue &which, uint32_t flags=0)
	Probe binder for interface information.
bool	operator!= (const BMemoryStore &) const
bool	operator< (const BMemoryStore &) const
bool	operator<= (const BMemoryStore &) const
BMemoryStore &	operator= (const BMemoryStore &)
bool	operator== (const BMemoryStore &) const
bool	operator> (const BMemoryStore &) const
bool	operator>= (const BMemoryStore &) const
virtual ssize_t	ReadAtV (off_t position, const struct iovec *vector, ssize_t count)
	Read the bytes described by iovec from location position in the storage.
void	SetBlockSize (size_t blocksize)
virtual status_t	SetSize (off_t position)
	Set the total number of bytes in the store.
virtual off_t	Size () const
	Return the total number of bytes in the store.
virtual status_t	Sync ()
	Make sure all data in the stream is written to its physical device.
virtual ssize_t	WriteAtV (off_t position, const struct iovec *vector, ssize_t count)
	Write the bytes described by iovec at location position in the storage.
Protected Member Functions
void	Reset ()
virtual	~BMemoryStore ()

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Constructor & Destructor Documentation

BMemoryStore (   )

BMemoryStore (  const BMemoryStore &   )

BMemoryStore (  void *  data, size_t  size )

BMemoryStore (  const void *  data, size_t  size )

~BMemoryStore (   )  [protected, virtual]

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Member Function Documentation

status_t AssertSpace (  size_t  newSize  )

const void * Buffer (   )  const

Direct access to the buffer.

size_t BufferSize (   )  const

Direct access to buffer size. The same as Size(), but it can be convenient when you know you are dealing with a BMemoryStore (and thus don't need a full off_t to contain the size).

int32_t Compare (  const BMemoryStore &   )  const

status_t Copy (  const BMemoryStore &   )

SValue Inspect (  const sptr< IBinder > &  caller, const SValue &  which, uint32_t  flags = 0 )  [virtual]

Probe binder for interface information. Return interfaces implemented by this binder object that are requested by which. This is a composition of all interfaces, expressed as { descriptor -> binder } mappings, which are selected through which. Much more information on Inspect() can be found at Binder Inspect() Details. Reimplemented from BByteStream.

bool operator!= (  const BMemoryStore &   )  const [inline]

bool operator< (  const BMemoryStore &   )  const [inline]

bool operator<= (  const BMemoryStore &   )  const [inline]

BMemoryStore & operator= (  const BMemoryStore &   )

bool operator== (  const BMemoryStore &   )  const [inline]

bool operator> (  const BMemoryStore &   )  const [inline]

bool operator>= (  const BMemoryStore &   )  const [inline]

ssize_t ReadAtV (  off_t  position, const struct iovec *  vector, ssize_t  count )  [virtual]

Read the bytes described by iovec from location position in the storage. Returns the number of bytes actually read, or a negative error code. Implements IStorage. Reimplemented in BValueStorage.

void Reset (   )  [protected]

Reimplemented in BStringIO.

void SetBlockSize (  size_t  blocksize  )

Reimplemented in BMallocStore.

status_t SetSize (  off_t  position  )  [virtual]

Set the total number of bytes in the store. Implements IStorage. Reimplemented in BValueStorage.

off_t Size (   )  const [virtual]

Return the total number of bytes in the store. Implements IStorage.

status_t Sync (   )  [virtual]

Make sure all data in the stream is written to its physical device. Returns B_OK if the data is safely stored away, else an error code. Reimplemented from BByteStream. Reimplemented in BValueStorage.

ssize_t WriteAtV (  off_t  position, const struct iovec *  vector, ssize_t  count )  [virtual]

Write the bytes described by iovec at location position in the storage. Returns the number of bytes actually written, or a negative error code. Implements IStorage. Reimplemented in BValueStorage.

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The documentation for this class was generated from the following files:

• MemoryStore.h
• MemoryStore.cpp

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Generated on Wed Dec 28 22:33:30 2005 by Doxygen 1.4.4 for OpenBinder Documentation Version 1.0

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