15 #include <type_traits> 20 #include <libcamera/base/span.h> 29 SharedMem(
const std::string &name, std::size_t size);
41 Span<uint8_t>
mem()
const 46 explicit operator bool()
const 59 template<class T, typename = std::enable_if_t<std::is_standard_layout<T>::value>>
63 static constexpr std::size_t kSize =
sizeof(T);
70 template<
class... Args>
77 obj_ =
new (
mem().data()) T(std::forward<Args>(args)...);
83 this->obj_ = rhs.obj_;
96 this->obj_ = rhs.obj_;
RAII-style wrapper for file descriptors.
Definition: shared_fd.h:16
T & operator*()
Dereference the stored object.
Definition: shared_mem_object.h:111
Utilities to help constructing class interfaces.
SharedMemObject(SharedMemObject< T > &&rhs)
Move constructor for SharedMemObject.
Definition: shared_mem_object.h:80
Top-level libcamera namespace.
Definition: backtrace.h:17
T * operator->()
Dereference the stored object.
Definition: shared_mem_object.h:101
SharedMemObject(const std::string &name, Args &&...args)
Construct a SharedMemObject.
Definition: shared_mem_object.h:71
Span< uint8_t > mem() const
Retrieve the underlying shared memory.
Definition: shared_mem_object.h:41
Definition: v4l2_pixelformat.h:60
const T & operator*() const
Dereference the stored object.
Definition: shared_mem_object.h:116
virtual ~SharedMem()
Destroy the SharedMem instance.
Definition: shared_mem_object.cpp:101
Helper class to allocate an object in shareable memory.
Definition: shared_mem_object.h:60
~SharedMemObject()
Destroy the SharedMemObject instance.
Definition: shared_mem_object.h:87
#define LIBCAMERA_DISABLE_COPY(klass)
Disable copy construction and assignment of the klass.
const T * operator->() const
Dereference the stored object.
Definition: shared_mem_object.h:106
Helper class to allocate and manage memory shareable between processes.
Definition: shared_mem_object.h:24
const SharedFD & fd() const
Retrieve the file descriptor for the underlying shared memory.
Definition: shared_mem_object.h:36
SharedMem & operator=(SharedMem &&rhs)
Move assignment operator for SharedMem.
Definition: shared_mem_object.cpp:111
SharedMemObject< T > & operator=(SharedMemObject< T > &&rhs)
Move assignment operator for SharedMemObject.
Definition: shared_mem_object.h:93