GC.BlkAttr

No attributes set.

Finalize the data in this block on collect.

Do not scan through this block on collect.

Do not move this memory block on collect.

This block contains the info to allow appending.

This can be used to manually allocate arrays. Initial slice size is 0.

Note: The slice's usable size will not match the block size. Use capacity to retrieve actual usable capacity.

Example:

// Allocate the underlying array.
int*  pToArray = cast(int*)GC.malloc(10 * int.sizeof, GC.BlkAttr.NO_SCAN | GC.BlkAttr.APPENDABLE);
// Bind a slice. Check the slice has capacity information.
int[] slice = pToArray[0 .. 0];
assert(capacity(slice) > 0);
// Appending to the slice will not relocate it.
slice.length = 5;
slice ~= 1;
assert(slice.ptr == p);

This block is guaranteed to have a pointer to its base while it is alive. Interior pointers can be safely ignored. This attribute is useful for eliminating false pointers in very large data structures and is only implemented for data structures at least a page in size.