Added DPPLQueueMgr_GetQueueFromContextAndDevice to backend

Author: oleksandr-pavlyk

backends/include/dppl_sycl_queue_manager.h

@@ -158,4 +158,20 @@ DPPLQueueMgr_PushQueue (DPPLSyclBackendType BETy,
 DPPL_API
 void DPPLQueueMgr_PopQueue ();
 
+
+/*!
+ * @brief Creates a new instance of SYCL queue from SYCL context and
+ * SYCL device.
+ *
+ * The instance is not placed into queue manager. The user assumes
+ * ownership of the queue reference and should deallocate it using
+ * DPPLQueue_Delete.
+ *
+ */
+DPPL_API
+__dppl_give DPPLSyclQueueRef
+DPPLQueueMgr_GetQueueFromContextAndDevice(__dppl_keep DPPLSyclContextRef CRef,
+					  __dppl_keep DPPLSyclDeviceRef DRef);
+
+
 DPPL_C_EXTERN_C_END

backends/source/dppl_sycl_queue_manager.cpp

@@ -40,6 +40,8 @@ namespace
 
 // Create wrappers for C Binding types (see CBindingWrapping.h).
 DEFINE_SIMPLE_CONVERSION_FUNCTIONS(queue, DPPLSyclQueueRef)
+DEFINE_SIMPLE_CONVERSION_FUNCTIONS(device, DPPLSyclDeviceRef)
+DEFINE_SIMPLE_CONVERSION_FUNCTIONS(context, DPPLSyclContextRef)
 
 /*!
  * @brief A helper class to support the DPPLSyclQueuemanager.
@@ -534,3 +536,18 @@ void DPPLQueueMgr_PopQueue ()
 {
     QMgrHelper::popSyclQueue();
 }
+
+/*!
+ * The function constructs a new SYCL queue instance from SYCL conext and
+ * SYCL device.
+ */
+DPPLSyclQueueRef
+DPPLQueueMgr_GetQueueFromContextAndDevice(__dppl_keep DPPLSyclContextRef CRef,
+					  __dppl_keep DPPLSyclDeviceRef DRef)
+{
+    auto dev = unwrap(DRef);
+    auto ctx = unwrap(CRef);
+    auto q = queue(*ctx, *dev);
+
+    return wrap(new queue(q));
+}

backends/tests/test_sycl_queue_manager.cpp

@@ -244,6 +244,22 @@ TEST_F (TestDPPLSyclQueueManager, CheckIsCurrentQueue2)
     DPPLQueueMgr_PopQueue();
 }
 
+TEST_F (TestDPPLSyclQueueManager, CreateQueueFromDeviceAndContext)
+{
+    auto Q = DPPLQueueMgr_GetCurrentQueue();
+    auto D = DPPLQueue_GetDevice(Q);
+    auto C = DPPLQueue_GetContext(Q);
+
+    auto Q2 = DPPLQueueMgr_GetQueueFromContextAndDevice(C, D);
+    auto D2 = DPPLQueue_GetDevice(Q2);
+    auto C2 = DPPLQueue_GetContext(Q2);
+
+    EXPECT_TRUE(DPPLDevice_AreEq(D, D2));
+    EXPECT_TRUE(DPPLContext_AreEq(C, C2));
+
+    DPPLQueue_Delete(Q2);
+}
+
 int
 main (int argc, char** argv)
 {