Merge 1047, fix caching of DpctlSyclQueue issues

Author: khaled

numba_dpex/core/types/dpctl_types.py

@@ -2,6 +2,8 @@
 #
 # SPDX-License-Identifier: Apache-2.0
 
+import random
+
 from dpctl import SyclQueue
 from numba import types
 from numba.core import cgutils
@@ -27,6 +29,19 @@ def __init__(self, sycl_queue):
     def sycl_queue(self):
         return self._sycl_queue
 
+    @property
+    def key(self):
+        """Returns a Python object used as the key to cache an instance of
+        DpctlSyclQueue.
+        The key is constructed by hashing the actual dpctl.SyclQueue object
+        encapsulated by an instance of DpctlSyclQueue. Doing so ensures, that
+        different dpctl.SyclQueue instances are inferred as separate instances
+        of the DpctlSyclQueue type.
+        Returns:
+            int: hash of the self._sycl_queue Python object.
+        """
+        return hash(self._sycl_queue)
+
     @property
     def box_type(self):
         return SyclQueue

numba_dpex/core/types/usm_ndarray_type.py

@@ -46,6 +46,8 @@ def __init__(
                 raise TypeError(
                     "numba_dpex.core.types.usm_ndarray_type.USMNdArray.__init__(): "
                     "The queue keyword arg should be a dpctl.SyclQueue object or None."
+                    "Found type(queue) ="
+                    + str(type(queue) + " and queue =" + queue)
                 )
             self.queue = queue
         else:
@@ -207,7 +209,13 @@ def can_convert_to(self, typingctx, other):
 
     @property
     def key(self):
-        return (*super().key, self.addrspace, self.usm_type, self.device)
+        return (
+            *super().key,
+            self.addrspace,
+            self.usm_type,
+            self.device,
+            self.queue,
+        )
 
     @property
     def as_array(self):