static void _Block_byref_release()

in src/BlocksRuntime/runtime.c [469:488]

• 15 lines of code
• 4 McCabe index (conditional complexity)

static void _Block_byref_release(const void *arg) {
    struct Block_byref *byref = (struct Block_byref *)arg;

    // dereference the forwarding pointer since the compiler isn't doing this anymore (ever?)
    byref = byref->forwarding;

    // To support C++ destructors under GC we arrange for there to be a finalizer for this
    // by using an isa that directs the code to a finalizer that calls the byref_destroy method.
    if ((byref->flags & BLOCK_BYREF_NEEDS_FREE) == 0) {
        return; // stack or GC or global
    }
    os_assert(byref->flags & BLOCK_REFCOUNT_MASK);
    if (latching_decr_int_should_deallocate(&byref->flags)) {
        if (byref->flags & BLOCK_BYREF_HAS_COPY_DISPOSE) {
            struct Block_byref_2 *byref2 = (struct Block_byref_2 *)(byref+1);
            (*byref2->byref_destroy)(byref);
        }
        _Block_deallocator((struct Block_layout *)byref);
    }
}