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AMPS C/C++ Client Class Reference
AMPS C/C++ Client Version 5.3.5.17
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AMPS C/C++ Client Class Reference
AMPS C/C++ Client Version 5.3.5.17
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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_, size_t initialSize_=AMPS_MEMORYBUFFER_DEFAULT_LENGTH, size_t sizeAlignment_=1, bool useStoredSizeAlignment_=false) | |
| 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... | |
| void | setSizeAlignment (size_t sizeAlignment_) |
| Set the allocation-unit alignment for logical buffer sizes. 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... | |
A Buffer implementation that uses a memory mapped file as its storage.
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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.
| fileName_ | The name of the file mapped to memory. |
| initialSize_ | The initial size of the buffer in bytes. |
| sizeAlignment_ | Alignment for logical buffer sizes. The default retains page-size alignment. |
| useStoredSizeAlignment_ | If true, use a value greater than one in the first 32 bits of an existing file as its size alignment. |
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inlinevirtual |
Set the size for the buffer.
| newSize_ | The new size in bytes for the buffer. |
Reimplemented from AMPS::MemoryStoreBuffer.
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inline |
Set the allocation-unit alignment for logical buffer sizes.
If the current buffer is not aligned, grow it to the next aligned size.
1.8.11 
