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buffer_copy

The boost::asio::buffer_copy function is used to copy bytes from a source buffer (or buffer sequence) to a target buffer (or buffer sequence).

std::size_t buffer_copy(
    const mutable_buffer & target,
    const const_buffer & source);
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std::size_t buffer_copy(
    const mutable_buffer & target,
    const const_buffers_1 & source);
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std::size_t buffer_copy(
    const mutable_buffer & target,
    const mutable_buffer & source);
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std::size_t buffer_copy(
    const mutable_buffer & target,
    const mutable_buffers_1 & source);
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template<
    typename ConstBufferSequence>
std::size_t buffer_copy(
    const mutable_buffer & target,
    const ConstBufferSequence & source);
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std::size_t buffer_copy(
    const mutable_buffers_1 & target,
    const const_buffer & source);
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std::size_t buffer_copy(
    const mutable_buffers_1 & target,
    const const_buffers_1 & source);
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std::size_t buffer_copy(
    const mutable_buffers_1 & target,
    const mutable_buffer & source);
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std::size_t buffer_copy(
    const mutable_buffers_1 & target,
    const mutable_buffers_1 & source);
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template<
    typename ConstBufferSequence>
std::size_t buffer_copy(
    const mutable_buffers_1 & target,
    const ConstBufferSequence & source);
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template<
    typename MutableBufferSequence>
std::size_t buffer_copy(
    const MutableBufferSequence & target,
    const const_buffer & source);
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template<
    typename MutableBufferSequence>
std::size_t buffer_copy(
    const MutableBufferSequence & target,
    const const_buffers_1 & source);
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template<
    typename MutableBufferSequence>
std::size_t buffer_copy(
    const MutableBufferSequence & target,
    const mutable_buffer & source);
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template<
    typename MutableBufferSequence>
std::size_t buffer_copy(
    const MutableBufferSequence & target,
    const mutable_buffers_1 & source);
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template<
    typename MutableBufferSequence,
    typename ConstBufferSequence>
std::size_t buffer_copy(
    const MutableBufferSequence & target,
    const ConstBufferSequence & source);
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std::size_t buffer_copy(
    const mutable_buffer & target,
    const const_buffer & source,
    std::size_t max_bytes_to_copy);
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std::size_t buffer_copy(
    const mutable_buffer & target,
    const const_buffers_1 & source,
    std::size_t max_bytes_to_copy);
  » more...

std::size_t buffer_copy(
    const mutable_buffer & target,
    const mutable_buffer & source,
    std::size_t max_bytes_to_copy);
  » more...

std::size_t buffer_copy(
    const mutable_buffer & target,
    const mutable_buffers_1 & source,
    std::size_t max_bytes_to_copy);
  » more...

template<
    typename ConstBufferSequence>
std::size_t buffer_copy(
    const mutable_buffer & target,
    const ConstBufferSequence & source,
    std::size_t max_bytes_to_copy);
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std::size_t buffer_copy(
    const mutable_buffers_1 & target,
    const const_buffer & source,
    std::size_t max_bytes_to_copy);
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std::size_t buffer_copy(
    const mutable_buffers_1 & target,
    const const_buffers_1 & source,
    std::size_t max_bytes_to_copy);
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std::size_t buffer_copy(
    const mutable_buffers_1 & target,
    const mutable_buffer & source,
    std::size_t max_bytes_to_copy);
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std::size_t buffer_copy(
    const mutable_buffers_1 & target,
    const mutable_buffers_1 & source,
    std::size_t max_bytes_to_copy);
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template<
    typename ConstBufferSequence>
std::size_t buffer_copy(
    const mutable_buffers_1 & target,
    const ConstBufferSequence & source,
    std::size_t max_bytes_to_copy);
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template<
    typename MutableBufferSequence>
std::size_t buffer_copy(
    const MutableBufferSequence & target,
    const const_buffer & source,
    std::size_t max_bytes_to_copy);
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template<
    typename MutableBufferSequence>
std::size_t buffer_copy(
    const MutableBufferSequence & target,
    const const_buffers_1 & source,
    std::size_t max_bytes_to_copy);
  » more...

template<
    typename MutableBufferSequence>
std::size_t buffer_copy(
    const MutableBufferSequence & target,
    const mutable_buffer & source,
    std::size_t max_bytes_to_copy);
  » more...

template<
    typename MutableBufferSequence>
std::size_t buffer_copy(
    const MutableBufferSequence & target,
    const mutable_buffers_1 & source,
    std::size_t max_bytes_to_copy);
  » more...

template<
    typename MutableBufferSequence,
    typename ConstBufferSequence>
std::size_t buffer_copy(
    const MutableBufferSequence & target,
    const ConstBufferSequence & source,
    std::size_t max_bytes_to_copy);
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The buffer_copy function is available in two forms:

Both forms return the number of bytes actually copied. The number of bytes copied is the lesser of:

This prevents buffer overflow, regardless of the buffer sizes used in the copy operation.

Requirements

Header: boost/asio/buffer.hpp

Convenience header: boost/asio.hpp


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