Boost C++ Libraries

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null_buffers::value_type

The type for each element in the list of buffers.

typedef mutable_buffer value_type;
Member Functions

Name

Description

data

Get a pointer to the beginning of the memory range.

mutable_buffer

Construct an empty buffer.

Construct a buffer to represent a given memory range.

operator+=

Move the start of the buffer by the specified number of bytes.

size

Get the size of the memory range.

Related Functions

Name

Description

operator+

Create a new modifiable buffer that is offset from the start of another.

The mutable_buffer class provides a safe representation of a buffer that can be modified. It does not own the underlying data, and so is cheap to copy or assign.

Accessing Buffer Contents

The contents of a buffer may be accessed using the data() and size() member functions:

boost::asio::mutable_buffer b1 = ...;
std::size_t s1 = b1.size();
unsigned char* p1 = static_cast<unsigned char*>(b1.data());

The data() member function permits violations of type safety, so uses of it in application code should be carefully considered.

Requirements

Header: boost/asio/buffer.hpp

Convenience header: boost/asio.hpp


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