Memory properties (#647)

* Add `.sycl_queue` property to MemoryUSM* classes per #640

* Change tests to use `.sycl_queue` property

Author: oleksandr-pavlyk

dpctl/memory/_memory.pyx

@@ -295,6 +295,15 @@ cdef class _Memory:
         def __get__(self):
             return self.queue.get_sycl_device()
 
+    property sycl_queue:
+        """
+        :class:`dpctl.SyclQueue` with :class:`dpctl.SyclContext` the
+        USM allocation is bound to and :class:`dpctl.SyclDevice` it was
+        allocated on.
+        """
+        def __get__(self):
+            return self.queue
+
     def __repr__(self):
         return (
             "<SYCL(TM) USM-{} allocation of {} bytes at {}>"

dpctl/tests/test_sycl_usm.py

@@ -59,6 +59,8 @@ def test_memory_create(memory_ctor):
     assert len(mobj) == nbytes
     assert mobj.size == nbytes
     assert mobj._context == queue.sycl_context
+    assert mobj._queue == queue
+    assert mobj.sycl_queue == queue
     assert type(repr(mobj)) is str
     assert type(bytes(mobj)) is bytes
     assert sys.getsizeof(mobj) > nbytes
@@ -495,7 +497,7 @@ def test_with_constructor(memory_ctor):
         shape=(64,),
         strides=(1,),
         offset=0,
-        syclobj=buf._queue._get_capsule(),
+        syclobj=buf.sycl_queue._get_capsule(),
     )
     check_view(v)
     # Use context capsule