AMPS C/C++ Client Class Reference
AMPS C/C++ Client Version 5.3.4.3
AMPS::MMapStoreBuffer Class Reference

A Buffer implementation that uses a memory mapped file as its storage. More...

#include <MMapStoreBuffer.hpp>

+ Inheritance diagram for AMPS::MMapStoreBuffer:

Public Member Functions

 MMapStoreBuffer (const std::string &fileName_)
 Create an MMapStoreBuffer using fileName_ as the name of the memory mapped file used for storage. More...
 
virtual void setSize (size_t newSize_)
 Set the size for the buffer. More...
 
- Public Member Functions inherited from AMPS::MemoryStoreBuffer
virtual size_t getSize () const
 Get the current size of the Buffer in bytes. More...
 
virtual size_t getPosition () const
 Get the current position in the buffer. More...
 
virtual void setPosition (size_t position_)
 Set the buffer postion to a location. More...
 
virtual void putByte (char byte_)
 Put a byte into the buffer at the current position and advance. More...
 
virtual char getByte ()
 Get the next byte from the buffer and advance. More...
 
virtual void putSizet (size_t s_)
 Put a size_t value into the buffer at the current position and advance past it. More...
 
virtual size_t getSizet ()
 Get a size_t value at the current buffer position and advance past it. More...
 
virtual void putInt32 (amps_int32_t s_)
 Put a 32-bit int value into the buffer and advance past it. More...
 
virtual amps_int32_t getInt32 ()
 Get the 32-bit int value at the current buffer position and advance past it. More...
 
virtual void putUint32 (amps_uint32_t s_)
 Put an unsigned 32-bit int value into the buffer at the current position and advance past the end of it. More...
 
virtual amps_uint32_t getUint32 ()
 Get the unsigned 32-bit int value at the current buffer position and advance past it. More...
 
virtual void putInt64 (amps_int64_t s_)
 Put an amps_int64_t value into the buffer at the current position and advance past it. More...
 
virtual amps_int64_t getInt64 ()
 Get a 64-bit int value at the current buffer position and advance past it. More...
 
virtual void putUint64 (amps_uint64_t s_)
 Put an amps_uint64_t value into the buffer at the current position and advance past it. More...
 
virtual amps_uint64_t getUint64 ()
 Get an unsigned 64-bit int value at the current buffer position and advance past it. More...
 
virtual void putBytes (const char *data_, size_t dataLength_)
 Put the given length of bytes in data into the buffer at the current position and advance past them. More...
 
virtual void putBytes (const Buffer::ByteArray &bytes_)
 Put the given bytes into the buffer at the current position and advance past them. More...
 
virtual Buffer::ByteArray getBytes (size_t numBytes_)
 Get the given number of bytes from the buffer. More...
 
virtual void copyBytes (char *buffer_, size_t numBytes_)
 Copy the given number of bytes from this buffer to the given buffer. More...
 
virtual void zero (size_t offset_, size_t length_)
 Set the given number of bytes in the buffer to zero starting at the given position. More...
 
virtual void copyBytes (size_t destination_, size_t source_, size_t number_)
 Move the given number of bytes at the given location to the new location Buffer should do this in the most optimal fashion. More...
 

Detailed Description

A Buffer implementation that uses a memory mapped file as its storage.

Constructor & Destructor Documentation

AMPS::MMapStoreBuffer::MMapStoreBuffer ( const std::string &  fileName_)
inline

Create an MMapStoreBuffer using fileName_ as the name of the memory mapped file used for storage.

If the file exists and contains valid messages, they will be available for replay.

Parameters
fileName_The name of the file mapped to memory.

Member Function Documentation

virtual void AMPS::MMapStoreBuffer::setSize ( size_t  newSize_)
inlinevirtual

Set the size for the buffer.

Parameters
newSize_The new size in bytes for the buffer.

Reimplemented from AMPS::MemoryStoreBuffer.


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