The asio::buffer_copy
function is used to copy bytes
from a source buffer (or buffer sequence) to a target buffer (or buffer sequence).
Copies bytes from a source buffer sequence to a target buffer sequence.
template< typename MutableBufferSequence, typename ConstBufferSequence> std::size_t buffer_copy( const MutableBufferSequence & target, const ConstBufferSequence & source); » more...
Copies a limited number of bytes from a source buffer sequence to a target buffer sequence.
template< typename MutableBufferSequence, typename ConstBufferSequence> std::size_t buffer_copy( const MutableBufferSequence & target, const ConstBufferSequence & source, std::size_t max_bytes_to_copy); » more...
The buffer_copy
function
is available in two forms:
buffer_copy(target, source)
buffer_copy(target, source, max_bytes_to_copy)
Both forms return the number of bytes actually copied. The number of bytes copied is the lesser of:
buffer_size(target)
buffer_size(source)
If
specified, max_bytes_to_copy
.
This prevents buffer overflow, regardless of the buffer sizes used in the copy operation.
Note that buffer_copy
is implemented in terms of memcpy
,
and consequently it cannot be used to copy between overlapping memory regions.
Header: asio/buffer.hpp
Convenience header: asio.hpp