This data structure is variable-sized through its last member whose size is determined at allocation time and stored in the m_size field. More...
Public Attributes | |
uint32_t | m_count |
The reference count of an instance of this data structure. | |
uint8_t | m_data [1] |
The real data buffer holds at least one byte. | |
uint32_t | m_dirtyEnd |
offset from the start of the m_data field below to the end of the area in which user bytes were written. | |
uint32_t | m_dirtyStart |
offset from the start of the m_data field below to the start of the area in which user bytes were written. | |
uint32_t | m_size |
the size of the m_data field below. | |
This data structure is variable-sized through its last member whose size is determined at allocation time and stored in the m_size field.
The so-called "dirty area" describes the area in the buffer which has been reserved and used by a user. Multiple Buffer instances may reference the same Buffer::Data object instance and may reference different parts of the underlying byte buffer. The "dirty area" is union of all the areas referenced by the Buffer instances which reference the same BufferData instance. New user data can be safely written only outside of the "dirty area" if the reference count is higher than 1 (that is, if more than one Buffer instance references the same BufferData).
uint32_t ns3::Buffer::Data::m_count |
The reference count of an instance of this data structure.
Each buffer which references an instance holds a count.
Definition at line 668 of file buffer.h.
Referenced by ns3::Buffer::Buffer(), ns3::Buffer::~Buffer(), ns3::Buffer::AddAtEnd(), ns3::Buffer::AddAtStart(), ns3::Buffer::CheckInternalState(), and ns3::Buffer::operator=().
uint8_t ns3::Buffer::Data::m_data[1] |
The real data buffer holds at least one byte.
Its real size is stored in the m_size field.
Definition at line 687 of file buffer.h.
Referenced by ns3::Buffer::AddAtEnd(), ns3::Buffer::AddAtStart(), ns3::Buffer::Iterator::Construct(), ns3::Buffer::CopyData(), ns3::Buffer::CreateFullCopy(), ns3::Buffer::PeekData(), and ns3::Buffer::Serialize().
uint32_t ns3::Buffer::Data::m_dirtyEnd |
offset from the start of the m_data field below to the end of the area in which user bytes were written.
Definition at line 682 of file buffer.h.
Referenced by ns3::Buffer::AddAtEnd(), ns3::Buffer::AddAtStart(), ns3::Buffer::CheckInternalState(), and ns3::Buffer::Initialize().
uint32_t ns3::Buffer::Data::m_dirtyStart |
offset from the start of the m_data field below to the start of the area in which user bytes were written.
Definition at line 677 of file buffer.h.
Referenced by ns3::Buffer::AddAtEnd(), ns3::Buffer::AddAtStart(), ns3::Buffer::CheckInternalState(), and ns3::Buffer::Initialize().
uint32_t ns3::Buffer::Data::m_size |
the size of the m_data field below.
Definition at line 672 of file buffer.h.
Referenced by ns3::Buffer::CheckInternalState(), and ns3::Buffer::Initialize().