Add DPCTLEvent_Copy func

Author: vlad-perevezentsev

dpctl-capi/include/dpctl_sycl_event_interface.h

@@ -57,4 +57,16 @@ void DPCTLEvent_Wait(__dpctl_keep DPCTLSyclEventRef ERef);
 DPCTL_API
 void DPCTLEvent_Delete(__dpctl_take DPCTLSyclEventRef ERef);
 
+/*!
+ * @brief Returns a copy of the DPCTLSyclEventRef object.
+ *
+ * @param    ERef           DPCTLSyclEventRef object to be copied.
+ * @return   A new DPCTLSyclEventRef created by copying the passed in
+ * DPCTLSyclEventRef object.
+ * @ingroup EventInterface
+ */
+DPCTL_API
+__dpctl_give DPCTLSyclEventRef
+DPCTLEvent_Copy(__dpctl_keep const DPCTLSyclEventRef ERef);
+
 DPCTL_C_EXTERN_C_END

dpctl-capi/source/dpctl_sycl_event_interface.cpp

@@ -47,3 +47,21 @@ void DPCTLEvent_Delete(__dpctl_take DPCTLSyclEventRef ERef)
 {
     delete unwrap(ERef);
 }
+
+__dpctl_give DPCTLSyclEventRef
+DPCTLEvent_Copy(__dpctl_keep DPCTLSyclEventRef ERef)
+{
+    auto SyclEvent = unwrap(ERef);
+    if (!SyclEvent) {
+        std::cerr << "Cannot copy DPCTLSyclEventRef as input is a nullptr\n";
+        return nullptr;
+    }
+    try {
+        auto CopiedSyclEvent = new event(*SyclEvent);
+        return wrap(CopiedSyclEvent);
+    } catch (std::bad_alloc const &ba) {
+        // \todo log error
+        std::cerr << ba.what() << '\n';
+        return nullptr;
+    }
+}