create global available devices to access it in const time

Author: saurabhkale17

onnxruntime/core/providers/openvino/contexts.h

@@ -108,6 +108,7 @@ struct ProviderInfo {
 struct SessionContext : ProviderInfo {
   SessionContext(const ProviderInfo& info) : ProviderInfo{info} {}
   std::vector<bool> deviceAvailableList = {true, true, true, true, true, true, true, true};
+  std::vector<std::string> available_devices; // this vector will be used to validate available devices thoughout OVEP lifetime
   std::filesystem::path onnx_model_path_name;
   uint32_t onnx_opset_version{0};
   mutable bool is_wholly_supported_graph = false;  // Value is set to mutable to modify from capability

onnxruntime/core/providers/openvino/openvino_execution_provider.cc

@@ -64,6 +64,9 @@ OpenVINOExecutionProvider::OpenVINOExecutionProvider(const ProviderInfo& info, s
   if (info.cache_dir.empty()) {
     bool device_found = false;
     std::vector<std::string> available_devices = OVCore::Get()->GetAvailableDevices();
+    for (int i = 0 ; i< available_devices.size() ; i++) {
+      session_context_.available_devices.push_back(available_devices[i]);
+    }
     // Checking for device_type configuration
     if (info.device_type != "") {
       if (info.device_type.find("HETERO") != std::string::npos ||