[SYCL][Graph] Adding new constructor with default context

Author: reble

sycl/include/sycl/ext/oneapi/experimental/graph/command_graph.hpp

@@ -101,6 +101,13 @@ class command_graph : public detail::modifiable_command_graph {
                          const property_list &PropList = {})
       : modifiable_command_graph(SyclQueue, PropList) {}
 
+  /// Constructor with default context.
+  /// @param SyclDevice Device all nodes will be associated with.
+  /// @param PropList Optional list of properties to pass.
+  explicit command_graph(const device &SyclDevice,
+                         const property_list &PropList = {})
+      : modifiable_command_graph(SyclDevice, PropList) {}
+
 private:
   /// Constructor used internally by the runtime.
   /// @param Impl Detail implementation class to construct object with.

sycl/include/sycl/ext/oneapi/experimental/graph/modifiable_graph.hpp

@@ -55,6 +55,12 @@ class __SYCL_EXPORT modifiable_command_graph
   modifiable_command_graph(const queue &SyclQueue,
                            const property_list &PropList = {});
 
+  /// Constructor with default context.
+  /// @param SyclDevice Device all nodes will be associated with.
+  /// @param PropList Optional list of properties to pass.
+  modifiable_command_graph(const device &SyclDevice,
+                           const property_list &PropList = {});
+
   /// Add an empty node to the graph.
   /// @param PropList Property list used to pass [0..n] predecessor nodes.
   /// @return Constructed empty node which has been added to the graph.

sycl/source/detail/graph/graph_impl.cpp

@@ -1806,6 +1806,12 @@ modifiable_command_graph::modifiable_command_graph(
     : impl(std::make_shared<detail::graph_impl>(
           SyclQueue.get_context(), SyclQueue.get_device(), PropList)) {}
 
+modifiable_command_graph::modifiable_command_graph(
+    const sycl::device &SyclDevice, const sycl::property_list &PropList)
+    : impl(std::make_shared<detail::graph_impl>(
+          SyclDevice.get_platform().khr_get_default_context(), SyclDevice,
+          PropList)) {}
+
 node modifiable_command_graph::addImpl(dynamic_command_group &DynCGF,
                                        const std::vector<node> &Deps) {
   impl->throwIfGraphRecordingQueue("Explicit API \"Add()\" function");

sycl/test-e2e/Graph/Inputs/basic_usm.cpp

@@ -18,7 +18,7 @@ int main() {
   calculate_reference_data(Iterations, Size, ReferenceA, ReferenceB,
                            ReferenceC);
 
-  exp_ext::command_graph Graph{Queue.get_context(), Queue.get_device()};
+  exp_ext::command_graph Graph{Queue.get_device()};
 
   T *PtrA = malloc_device<T>(Size, Queue);
   T *PtrB = malloc_device<T>(Size, Queue);