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Function `std.experimental.allocator.disposeMultidimensionalArray`

Destroys and then deallocates a multidimensional array, assuming it was created with makeMultidimensionalArray and the same allocator was used.


						
				void disposeMultidimensionalArray(T, Allocator)
				(
				

				  auto ref Allocator alloc,
				

				  auto ref T[] array
				

				);

Parameters

Name	Description
T	element type of an element of the multidimensional array
alloc	the allocator used for getting memory
array	the multidimensional array that is to be deallocated

Example

struct TestAllocator
{
    import std.experimental.allocator.common : platformAlignment;
    import std.experimental.allocator.mallocator : Mallocator;

    alias allocator = Mallocator.instance;

    private static struct ByteRange
    {
        void* ptr;
        size_t length;
    }

    private ByteRange[] _allocations;

    enum uint alignment = platformAlignment;

    void[] allocate(size_t numBytes)
    {
         auto ret = allocator.allocate(numBytes);
         _allocations ~= ByteRange(ret.ptr, ret.length);
         return ret;
    }

    bool deallocate(void[] bytes)
    {
        import std.algorithm.mutation : remove;
        import std.algorithm.searching : canFind;

        bool pred(ByteRange other)
        { return other.ptr == bytes.ptr && other.length == bytes.length; }

        assert(_allocations.canFind!pred);

         _allocations = _allocations.remove!pred;
         return allocator.deallocate(bytes);
    }

    ~this()
    {
        assert(!_allocations.length);
    }
}

TestAllocator allocator;

auto mArray = allocator.makeMultidimensionalArray!int(2, 3, 5, 6, 7, 2);

allocator.disposeMultidimensionalArray(mArray);

Authors

Andrei Alexandrescu

License

Boost License 1.0.