A MemoryBlock encapsulates a chunk of memory. It's used by the IOQueue and IOStack classes.
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| | MemoryBlock (uint8_t *data, unsigned int size) |
| | Construct a new MemoryBlock. More...
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| ~MemoryBlock () |
| | Destructor, this frees the memory for the block.
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void | SeekBack () |
| | Move the insertation point to the end of the block. This is useful if you want to use the block in pre-pend mode.
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| unsigned int | Capacity () const |
| | The size of the memory region for this block. More...
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| unsigned int | Remaining () const |
| | The free space at the end of the block. More...
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| unsigned int | Size () const |
| | The size of data in this block. More...
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| bool | Empty () const |
| | Check if the block contains data. More...
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| uint8_t * | Data () const |
| | Provides a pointer to the first byte of valid data in this block. More...
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| unsigned int | Append (const uint8_t *data, unsigned int length) |
| | Append data to this block. More...
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| unsigned int | Prepend (const uint8_t *data, unsigned int length) |
| | Prepend data to this block. More...
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| unsigned int | Copy (uint8_t *data, unsigned int length) const |
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| unsigned int | PopFront (unsigned int length) |
| | Remove data from the front of the block. More...
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◆ MemoryBlock()
| ola::io::MemoryBlock::MemoryBlock |
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uint8_t * |
data, |
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unsigned int |
size |
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) |
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inline |
Construct a new MemoryBlock.
- Parameters
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| data | a pointer to the memory region to use, ownership is transferred. |
| size | the size of the memory region to use |
◆ Append()
| unsigned int ola::io::MemoryBlock::Append |
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const uint8_t * |
data, |
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unsigned int |
length |
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) |
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inline |
Append data to this block.
- Parameters
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| data | the data to append. |
| length | the length of the data to append. |
- Returns
- the number of bytes written, which will be less than length if the block is now full.
◆ Capacity()
| unsigned int ola::io::MemoryBlock::Capacity |
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const |
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inline |
The size of the memory region for this block.
- Returns
- the size of the memory region for this block.
◆ Copy()
| unsigned int ola::io::MemoryBlock::Copy |
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uint8_t * |
data, |
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unsigned int |
length |
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) |
| const |
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inline |
Copy data from the MemoryBlock into the location provided.
- Parameters
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| [out] | data | a pointer to the memory to copy the block data to. |
| length | the maximum size of data to copy. |
- Returns
- the amount of data copied
◆ Data()
| uint8_t* ola::io::MemoryBlock::Data |
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const |
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inline |
Provides a pointer to the first byte of valid data in this block.
- Returns
- a pointer to the first byte of valid data in this block.
◆ Empty()
| bool ola::io::MemoryBlock::Empty |
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const |
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inline |
Check if the block contains data.
- Returns
- true if the block contains no data, false otherwise.
◆ PopFront()
| unsigned int ola::io::MemoryBlock::PopFront |
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unsigned int |
length | ) |
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inline |
Remove data from the front of the block.
- Parameters
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| length | the amount of data to remove |
- Returns
- the amount of data removed.
◆ Prepend()
| unsigned int ola::io::MemoryBlock::Prepend |
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const uint8_t * |
data, |
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unsigned int |
length |
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) |
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inline |
Prepend data to this block.
- Parameters
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| data | the data to prepend. |
| length | the length of the data to prepend. |
- Returns
- the amount of data prepended, (from the end of data), which will be less than length if the block is now full.
◆ Remaining()
| unsigned int ola::io::MemoryBlock::Remaining |
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| ) |
const |
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inline |
The free space at the end of the block.
- Returns
- the free space at the end of the block.
◆ Size()
| unsigned int ola::io::MemoryBlock::Size |
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| ) |
const |
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inline |
The size of data in this block.
- Returns
- the size of the data in this block.
The documentation for this class was generated from the following file:
1.8.13