#include <Memory.h>

Collaboration diagram for MappedMemory:

Public Member Functions
	MappedMemory ()=default

	~MappedMemory ()

int	set (size_t size, int prot, int fd, size_t offset)

int	getPointer (uint8_t **buffer) const override

bool	validateSize (uint32_t offset, uint32_t length) const override

Public Member Functions inherited from Memory
	Memory ()=default

virtual	~Memory ()=default

	Memory (const Memory &)=delete

Memory &	operator= (const Memory &)=delete

Detailed Description

Definition at line 41 of file Memory.h.

Constructor & Destructor Documentation

◆ MappedMemory()

MappedMemory::MappedMemory ( )

default

◆ ~MappedMemory()

MappedMemory::~MappedMemory ( )

Definition at line 25 of file Memory.cpp.

{
  if (_base)
  {
    munmap(_base, _size);
  }
}

Member Function Documentation

◆ getPointer()

int MappedMemory::getPointer ( uint8_t ** buffer ) const

overridevirtual

Implements Memory.

Definition at line 66 of file Memory.cpp.

{
  *buffer = _base;
  return ANEURALNETWORKS_NO_ERROR;
}

References ANEURALNETWORKS_NO_ERROR.

◆ set()

int MappedMemory::set	(	size_t	size,
		int	prot,
		int	fd,
		size_t	offset
	)

Definition at line 33 of file Memory.cpp.

{
#if 0
  if (fd < 0)
  {
    LOG(ERROR) << "ANeuralNetworksMemory_createFromFd invalid fd " << fd;
    return ANEURALNETWORKS_UNEXPECTED_NULL;
  }
  if (size == 0 || fd < 0)
  {
    LOG(ERROR) << "Invalid size or fd";
    return ANEURALNETWORKS_BAD_DATA;
  }
  int dupfd = dup(fd);
  if (dupfd == -1)
  {
    LOG(ERROR) << "Failed to dup the fd";
    return ANEURALNETWORKS_UNEXPECTED_NULL;
  }
#endif
  void * const base = mmap(nullptr, size, prot, MAP_PRIVATE, fd, offset);
 
  if (base == MAP_FAILED)
  {
    return ANEURALNETWORKS_UNEXPECTED_NULL;
  }
 
  _base = static_cast<uint8_t *>(base);
  _size = size;
 
  return ANEURALNETWORKS_NO_ERROR;
}

References ANEURALNETWORKS_BAD_DATA, ANEURALNETWORKS_NO_ERROR, ANEURALNETWORKS_UNEXPECTED_NULL, LOG, offset(), and size.

◆ validateSize()

bool MappedMemory::validateSize	(	uint32_t	offset,
		uint32_t	length
	)		const