Initial unified Tizen .NET modulestizenfx

Change-Id: I56353c0f86e2eeb665eec3eb92f695da69fa9afe

1 files changed, 60 insertions, 0 deletions

diff --git a/src/ElmSharp/Interop/Interop.Libdl.cs b/src/ElmSharp/Interop/Interop.Libdl.cs
new file mode 100644
index 0000000..4f233f8
--- /dev/null
+++ b/src/ElmSharp/Interop/Interop.Libdl.cs
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2016 Samsung Electronics Co., Ltd All Rights Reserved
+ *
+ * Licensed under the Apache License, Version 2.0 (the License);
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an AS IS BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+using System;
+using System.Runtime.InteropServices;
+
+internal static partial class Interop
+{
+    internal static partial class Libdl
+    {
+        private const int RTLD_NOW = 2;
+
+        [DllImport(Libraries.Libdl)]
+        private static extern IntPtr dlopen(string filename, int flags);
+
+        [DllImport(Libraries.Libdl)]
+        private static extern int dlclose(IntPtr handle);
+
+        [DllImport(Libraries.Libdl)]
+        private static extern IntPtr dlsym(IntPtr handle, string symbol);
+
+        [DllImport(Libraries.Libdl)]
+        private static extern IntPtr dlerror();
+
+        internal static IntPtr LoadLibrary(string filename)
+        {
+            return dlopen(filename, RTLD_NOW);
+        }
+
+        internal static void FreeLibrary(IntPtr handle)
+        {
+            dlclose(handle);
+        }
+
+        internal static IntPtr GetProcAddress(IntPtr handle, string name)
+        {
+            dlerror();
+            var res = dlsym(handle, name);
+            var errPtr = dlerror();
+            if (errPtr != IntPtr.Zero)
+            {
+                throw new Exception("dlsym : " + Marshal.PtrToStringAnsi(errPtr));
+            }
+            return res;
+        }
+    }
+}