deal.II version GIT relicensing-1941-ga9013bea74 2024-10-08 06:50:00+00:00
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#include <deal.II/lac/vector_memory.h>
Public Member Functions | |
Pointer ()=default | |
Pointer (Pointer &&p) noexcept=default | |
Pointer & | operator= (Pointer &&p) noexcept=default |
Pointer (VectorMemory< VectorType > &mem) | |
~Pointer ()=default | |
T * | operator-> () |
STL member. | |
Public Attributes | |
T | ptr |
STL member. | |
A class that looks like a pointer for all practical purposes and that upon construction time allocates a vector from a VectorMemory object (or an object of a class derived from VectorMemory) that is passed to the constructor of this class. The destructor then automatically returns the vector's ownership to the same VectorMemory object.
Pointers of this type are therefore safe in the sense that they automatically call VectorMemory::free() when they are destroyed, whether that happens at the end of a code block or because local variables are destroyed during exception unwinding. These kinds of object thus relieve the user from using vector management functions explicitly.
In many senses, this class acts like std::unique_ptr
in that it is the unique owner of a chunk of memory that it frees upon destruction. The main differences to std::unique_ptr
are (i) that it allocates memory from a memory pool upon construction, and (ii) that the memory is not destroyed using operator delete
but returned to the VectorMemory pool.
Definition at line 187 of file vector_memory.h.
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default |
Default constructor. This constructor corresponds to a nullptr
object that does not own a vector. It can, however, later be assigned another Pointer object via move assignment in which case it will steal the vector owned by the other object (as std::unique_ptr
does).
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defaultnoexcept |
Move constructor: this creates a new Pointer by stealing the internal data owned by p
.
VectorMemory< VectorType >::Pointer::Pointer | ( | VectorMemory< VectorType > & | mem | ) |
Constructor. This constructor automatically allocates a vector from the given vector memory object mem
.
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default |
Destructor, automatically releasing the vector from the memory pool.
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defaultnoexcept |
Move operator: this releases the vector owned by the current Pointer and then steals the internal data owned by p
.
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inherited |
STL member.
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inherited |
STL member.