atomicRcBoxAlloc0
Allocates @block_size bytes of memory, and adds atomic reference counting semantics to it.
The contents of the returned data is set to zero.
The data will be freed when its reference count drops to zero.
The allocated data is guaranteed to be suitably aligned for any built-in type.
Return
a pointer to the allocated memory
Since
2.58
Parameters
blockSize
the size of the allocation, must be greater than 0